Note: Descriptions are shown in the official language in which they were submitted.
CA 02150362 2003-O1-13
[SPECIFICATION]
MASKING MEMBER
[FIELD OF THE INVENTION]
The present invention relates to a masking member which
is used to protect a part of an article from a surface
treatment such as coating, plating and the like.
C DESCRIPTION OF THE PRIOR ART)
In case a part to be protected is a plane or a hole, a
masking member having an adhesive layer is attached to
the part through the adhesive layer. In case the part
is a hole, a masking member having an inserting part is
attached to the hole part by inserting said inserting
part into the hole. In case the part is a panel, a
masking member having a ditch is attached to the part
by fitting the ditch to the panel. In case the part is
a protrusion, a masking member having a fitting part is
attached to the part by fitting the fitting part to the
protrusion. And after the surface treatment, such
masking members are removed from the parts respectively.
Hitherto, material consisting of thermoplastic resin mixed
with inorganic filler has been provided for such
masking members (Japanese Patent Publication 2-126966
published May 15, 1990).
Among the thermoplastic resin materials polyolefin
especially has strong solvent resistance and is
mechanically reinforced by mixing with inorganic filler, so
that a thermal conductivity of which will increase and a
thermal resistance of which will also increase: therefore,
said masking members can be used repeatedly.
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CA 02150362 2003-11-19
However, with respect to the above mentioned conventional
masking members, thermal resistance of which is 150°C at
the highest even mixed with inorganic filler, and in a
process of surface treatment which requires a temperature
higher than 150°C, the masking members are deformed.
[DISCLOSURE OF THE INVENTION]
In accordance with one aspect of the present invention
there is provided a method of masking a structure to
protect a selected surface of said structure during a
surface treatment operation which comprises: applying to
said structure a masking member made of one or more kinds
of engineering plastic selected from the group consisting
of methylpentene copolymer (TPX), polysulphone (PSF),
polyethersulphone (PES), polyphenylene sulfide (PPS),
polyphenylene ether (PPE), polyamideimide (PAI),
polyetherimide (PEI), and polyether-etherketone (PEEK);
subjecting said structure, including said applied masking
member, to a paint coating operation; removing the masking
member from said surface treated structure; and employing
said masking member in another surface treatment operation.
In accordance with another aspect of the present invention
there is provided a method of masking a structure to
protect a selected surface of said structure during a
surface treatment operation which comprises: providing one
or more kinds of engineering plastic selected from the
group consisting of methylpentene copolymer (TPX),
polysulphone (PSF), polyethersulphone (PES), polyphenylene
sulfide (PPS), polyphenylene ether (PPE), polyamideimide
(PAI), polyetherimide (PEI), polyether-etherketone (PEEK),
and polyimide (PI); mixing thermoplastic resin in said
one or more kinds of engineering plastic to form a
polymer alloy; applying to said structure a masking
member made of said polymer alloy;
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CA 02150362 2003-11-19
subjecting said structure, including said applied masking
member, to a paint coating operation; removing the masking
member from said surface treated structure; and employing
said masking member in another surface treatment operation.
In accordance with yet another aspect of the present
invention there is provided a masking member comprising
one or more kinds of engineering plastic selected from
the group consisting of methylpentene copolymer (TPX),
polysulphone (PSF), polyethersulphone (PES),
polyphenylene sulfide (PPS), polyphenylene ether (PPE),
polyamideimide (PAI), polyetherimide (PEI), and
polyether-etherketone (PEEK).
In accordance with still yet another aspect of the present
invention there is provided a masking member made of one or
more kinds of engineering plastic selected from the group
consisting of methylpentene copolymer (TPX), polyethylene
terephthalate (PET), polycarbonate (PC), cellulose acetate
(CA), polysulphone (PSF), polyethersulphone (PES),
polyphenylene sulfide (PPS), polyphenylene ether (PPE),
polyamideimide (PAI), polyetherimide (PEI), polyether-
etherketone (PEEK), polyimide (PI), nylon 6, nylon 66,
polybutylene terephthalate (PBT), polyallylester (PAE),
polyethylene naphthalate (PEN), polyallylate (PAR),
aminobimaleimide and bimaleimidoazine; wherein said masking
member is surface treated by corona discharge to increase
its affinity to paint and/or adhesive.
In accordance with still yet another aspect of the present
invention there is provided a masking member made of one or
more kinds of engineering plastic selected from the group
consisting of methylpentene copolymer (TPX), polyethylene
terephthalate (PET), polycarbonate (PC), cellulose acetate
(CA), polysulphone (PSF), polyethersulphone (PES),
polyphenylene sulfide (PPS), polyphenylene ether (PPE),
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CA 02150362 2003-11-19
polyamideimide (PAI), polyetherimide (PEI), polyether-
etherketone (PEEK), polyimide (PI), nylon 6, nylon 66,
polybutylene terephthalate (PBT), polyallylester (PAE),
polyethylene naphthalate (PEN), polyallylate (PAR),
aminobimaleimide and bimaleimidoazine; wherein
thermoplastic resin is mixed in said one or more kinds of
engineering plastic to form a polymer alloy; and wherein
said masking member is surface treated by corona
discharge to increase its affinity to paint and/or
adhesive.
[BRIEF DESCRIPTION OF THE DRAWINGS]
Figure 1 to Figure 3 relate to the first embodiment of the
present invention.
Figure 1 is the perspective view of the first embodiment.
Figure 2 is the partial sectional view of the first
embodiment when the masking member is attached.
Figure 3 is the partial sectional view of the first
embodiment when the masking member is removed. .
Figure 4 to Figure 6 relate to the second embodiment of the
present invention.
Figure 9 is the perspective view of the second embodiment.
Figure 5 is the partial sectional view of the second
embodiment when the masking member is attached.
Figure 6 is the partial perspective view of the second
embodiment when the masking members are produced.
Figure 7 is the perspective view of the third embodiment of
the present invention.
Figure 8 to Figure 10 relate to the fourth embodiment of
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21~a A,
3~2
the present invention.
Figure 8 is the perspectivE
embodiment.
Figure 9 is the partial sectional view of the fourth
embodiment when the masking member is attached.
Figure 10 is another partial sectional view of the
fourth embodiment when the masking member is attached.
Figure 11 and Figure 12 relate to the fifth embodiment
of the present, invention.
Figure 11 is the perspective view of the fifth
embodiment.
Figure 12 is the partial sectional view of the fifth
embodiment when the masking member is attached.
Figure: l3 and Figure 14 relate to the sixth embodiment
of the present invention.
Figure 13 is the perspective view of the sixth
embodiment.
Figure 14 is the partial sectional view of the sixth
embodiment when the masking member is attached.
Figure 15 is the perspective view of the seventh
embodiment of the present invention.
Figure 16 is the perspective view of the eighth
embodiment of the present invention.
Figure 17 and Figure 18 relate to the ninth embodiment
of the present invention.
Figure 17 is the perspective view of the ninth
embodiment.
Figure 18 is the partial sectional view of the ninth
embodiment when the masking member is attached.
Figure 19 and Figure 20 relate to the tenth embodiment
of the present invention.
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215~36~
Figure 19 is the perspective view or the tenth
embodiment.
Figure 20 is the partial sectional view of the tenth
embodiment when the masking member is attached.
Figure 21 to Figure 26 relate to the practical examples
of the present invention.
Figure 21\is the perspective view of a car-body of the
practical example.
Figure 22 is the explanatory perspective view of Part A
of the practical example.
Figure 23 is the explanatory perspective view of Part B
of the practical example.
. Figure 24 is the explanatory perspective view of Part C
of the practical example.
Figure 25 is the explanatory perspective view of Part D
of the practical example.
Figure 26 is the explanatory perspective view of Part E
of the practical example.
Figure 27 and Figure 28 relate to the eleventh
embodiment of the present invention.
Figure 27 is the perspective view of the eleventh
embodiment.
Figure 28 is the sectional view of the eleventh
embodiment when the masking member is attached.
Figure 29 to Figure 31 relate to the twelfth embodiment
of the present invention.
Figure 29 is the perspective view of the twelfth
embodiment, before the masking member is attached.
Figure 30 is the sectional view taken along line A-A of
Figure 29.
Figure 31 is the sectional view taken along line A-A of
Figure 29 when the masking member is attached.
Figure 32 and Figure 33 relate to the. thirteenth
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215(13fi-2
embodiment of the present invention.
Figure 32 is the perspective view of the thirteenth
embodiment.
Figure 33 is the partial sectional view of the
thirteenth embodiment when the masking member is
attached.
Figure 34 to Figure 36 relate to.the fourteenth
embodiment of the present invention.
Figure 34 is the perspective view of the fourteenth
embodiment.
Figure 35 is the partial sectional view of an inlet of
fuel tank of the fourteenth embodiment.
Figure 36 is the expalanatory sectional view of the
fourteenth embodiment when adhesive layer is applied.
Figure to Figure 40 relate to the fifteenth
37
embodimentof the present invention.
Figure is the perspective view of the fifteenth
37
embodiment.
Figure is the sectional view of the fifteenth
38
embodimentwhen the masking member is attached.
Figure~39 is the front view of a group of masking
members the fifteenth embodiment.
of
Figure is the front view of a masking member
40
separated from the group of masking members of the
fifteenth embodiment.
Figure 41 and Figure 42 relate to the sixteenth
embodiment of the present invention.
Figure 41 is the perspective view of the sixteenth
embodiment.
Figure 42 is the sectional view of the sixteenth
embodiment when the masking member is attached.
Figure 43 to Figure 46 relate to the seventeenth
embodiment of the present invention.
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215Q3~~
Figure 43 is the perspective view of the seventeenth
embodiment.
Figure 44 is the sectional view of the seventeenth
embodiment when the masking member is provisionally
fixed.
Figure 45 is the sectional view of the seventeenth
embodiment when the masking member is attached.
Figure 46 is the front view of the seventeemth
embodiment when the masking member is attached.
In the drawings,
(1)...:........... article
(11).............. car-body
(12)............., underside of car body
(13).............. bumpe r
(14). :........... inlet of fuel tank
(15).....-......... pillar
(2)............... part being protected
(21).............. protrusion
(22). ......:..... hole
(23)............., extending part
(31)~- (317)....... masking member
( 3 iA ) ~r ( 316A ) . . . : body
(4)......... .... coating layer
C DETAIL DESCRIPTION OF THE INVENTION]
An engineering plastic used in the present invention is
such as: thermoplastic-type engineering plastic such as
methylpentene copolymer (TPX), polyethylene
telephthalate (PET), polyamide (PA), polycarbonate (PC),
cellulose acetate (CA), polysulphone -(PSF),
polyethersulphone (PES), polyphenylene sulphide (PRS),
polyphenylene ether (PPE), polyamideimide (PAI),
polyetherimide (PEI), polyether-etherketone (PEEK),
polyimide (PI), polyester (PE), polyamide such as nylon
6 and nylon 66, polybutylene telephthalate (PBT),
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2150362
polyallylester (PAE), polyethylene naphthalate (PEN),
polyallylate (PAR). polyvinylidene fluoride (PVFZ )
and the like; liquid crystal-type engineering plastic
such as polyallylether and the like; compression
molding-type engineering plastic such as fluororesin
and the like; amorphous polymer; aminobimaleimide;
bimaleimidoazine thermosetting aromatic polyimide; and
the like. The above described. engineering plastic may
be foamed plastic and two or more kinds of said
engineering plastics may be mixed or laminated
together:
A filler or a reinforcing material such as calcium
carbonate, magnesium carbonate, barium sulphate,
calcium sulfite,_magnesium hydroxide, aluminum
hydroxide, magnesium oxide, titan white, iron oxide,
zinc oxide, alumina, silica diatom earth, dolomite,
gypsum, talc, clay, asbestos, mica, calcium silicate,
bentonite, white carbon, carbon black, iron powder,
aluminum powder, stone powder, blast furnace slag,
flyash, synthetic fiber, natural fiber, glass fiber,
carbon fiber, ceramic fiber, whisker and the like may be
mixed in the engineering plastic. 10 to 200 % by
weight of said filler is commonly mixed with said
engineering plastic.
Further,~one or more kind of: thermoplastic resin such
as polyolefin such as polyethylene, polypropylene,
ethylene-propylene copolymer, ethylene-vinylacetate
copolymer. and the like, polyvinyl chloride, polystylene,
polymethacrylate, polyvinylidene chloride, stylene-
butadiene copolymer, polyamide and the like; plastic
foam of the above described thermoplastic resin;
polyurethane foam; and the like, may be mixed or
laminated with the engineering plastic. A desirable
engineering plastic is a polymer alloy such as PPE and
polyamide, high-impact plystylene, polyst.ylene and the
q _
like.
A surface treatment such as corona discharge treatment,
primer coating treatment and the like is preferably
effected on the surface of the engineering plastic to
increase its affinity with paint or adhesive: Also
releasing treatment may be effected on the surface of
said engineering plastic to decrease its affinity with
paint or adhesive. A primer used in the primer coating
treatment is, for example: synthetic rubber such as
modified polyolefin or olefin copolymer such as
chlorinated polypropylene or ethylene-vinylacetate
copolymer, styrene-butadiene rubber, acrylonitrile-
butadiene rubber, chloropren.e rubber, polybutadien and
the like; synthetic resin such as acrylic synthetic
resin, vinyl synthetic resin, acrylic synthetic resin
including amino group and/or amide, vinyl synthetic
resin including amino group, and/or amide, amino
synthetic resin, epoxy synthetic resin and the like; and
low-molecular weight primer such as aluminium alcholate
or aluminium chelate agent such as aluminium
isopropylate, aluminium triacetylacetonate and the like;
alkyl metal such as 2-ethylhexyl lead, hexadecyl
lithium and the like; organotin compound such as dibutyl
tin diacetate, di-n.-butyl tin dioxide and the like;
silane compound such as methylvinyl dichloro silane and
the like; metal complex salt of 1, 3-dicarbonyl
compound such as acetylacetone lithium, acetylacetone
beryllium and the like; organotitan compound such as
tetrabutyl titanate and the like; boric acid compound
such as tri-n-butyl borate, triphenyl borate and the
like; phosphate such as trioleil phosphate, tridecyl
phosphate and the like; metal salt of a carboxylic acid
such as magnesium stearate, cobalt naphtenic acid and
the like; metal thioalcholate such as n-potassium
dodecylmercapto chloride and the like; thiodicarboxylate
such as 2-ethylhexane dithio acid zinc and the like;
_ g _
metal salt of a dithiocarbamic acid such as nickel
dimethyldithiocarbamate, copper dimethyldithiocarbamate
and the like; metal salt of sulfonic acid such as
nickel benzenesuifonate and the like; organophosphate
compound such as dibutylvanadium phosphate and the
like. One or more kinds of said primers may be mixed
together.
Said primer has affinity with both said engineering
plastic and synthetic resin other than said engineering
plastic which is generally used as a paint vehicle or an
adhesive for said engineering plastic. A preferable
primer is an acrylic synthetic resin containing
quarternary ammonium salt or a synthetic resin
containing amino group. For the primer coating
treatment, a solution or an emulsion of one or more
kinds of said primef is coated on the surface of said
engineering plastic as the material for the masking
member arid then dried.
Prior to said primer coating treatment, an affinity
treatmEnt may be effected on the surface of said
engineering plastic. The examples of said affinity
treatment are flame treatment, sulfuric acid
treatment, corona discharge treatment and the like, and
the surface of said engineering plastic is slightly
carbonyzed by said treatment to obtain the affinity
with other synthetic resin.
Further, the examples of a release agent used for the
surface treatment of said engineering plastic are a
silicone type release agent, a fluoro type release
agent, a fatty acid type release agent, a paraffine
type release agent, a wax type release agent and the
like.
For releasing treatment, a.solution or a emulsion of one
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2150362
or more kinds of said releasing agent or melted
releasing agent is coated on the surface of said
engineering plastic and then dried or cooled.
Said engineering plastic may be colored by a pigment or
a dyestuff to discriminate the masking parts, and also,
a flame-retardant, an insecticide,ran antiseptic, an
antioxidant, an ultraviolet absorber, a blowing agent
such as a chemical blowinglagent, a capsule type
blowing agent and the like, and the like may be mixed
with said engineering plastic. Two or more kinds of
said agents may be mixed and then added to said
engineering plastic.
To manufacture the masking member by using said
engineering plastic as a material, commonly the vacuum-
forming method in which a film or a sheet of said
engineering plasticis vacuum-formed is most appropriate
because it is the most suitable method for mass-
production, however, press molding method, blow molding
method, injection molding method and the like may be
applied to manufacture the masking member. Both un-
stretched film or sheet and stretched film or sheet of
said engineering plastic may be used to manufacture the
masking member.
Said engineering plastic has a high heat resistance and
the masking member made of said engineering plastic has
a high mechanical strength and said masking member does
not soften or deformed even at a temperature higher than
150°C
Accordingly, in the present invention, the masking
member 'can be used repeatedly even in the surface
treatment having a heating process at a high
temperature.
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2150362
fi
[Masking member, Type A]
Masking member Type A is used to protect the even
surface of an article.
Figure 1 to Figure 3 relate to the first embodiment of
the present invention. Referring now to. Fig. 1 to Fig.
3, a masking member (31) comprises a body (31A) having
a vessel form consisting of a rectangular bottom and an
adhesive layer (31B) formed on the under surface of said
body (31A), with said body (31A) manufactured by vacuum-
forming of a sheet consisting of polyphenylenesulfide
in which S0~ by weight of calcium carbonate is mixed.
Said adhesive layer (31B) is covered with a release
sheet (31C) such as a polyethylene film, a polypropylene
film, a release paper and the Iike to prevent sticking
to another article, the hands of workers and the like
when the masking members are handled, stacked,
transported, kept and the like.
When said masking member (31) is used, said release
sheet (31C) is removed from said adhesive layer (31B)
and said masking member (31) is then attached to an even
part (2) of the surface of an article (1) by said
adhesive layer (31B) thereof, which is necessary to be
protected from a surface treatment. After said masking
member (31) is attached to said part (2), for example, a
coating material is coated on the surface of said
article (1) by spraying as shown in Fig. 2. Said part
(2) of said surface of said article (1) is not subjected
to said coating since said part (2) is covered with
said masking member (31). Said part (2) may have
holes) and in this case, said holes) is (are). also not
subjected to said coating.
After or before said coated article (1) is heated to dry
and/or cure if desired, and said masking member (31)
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I
may be removed by a worker's hand as shown in Fig. 3.
Said masking member (31) consisting of the above-
mentioned sheet is easily manufactured by vacuum
forming and can be reused without deformation.
Further in a case when a silicone treatment is effected
on the surface of said masking member (31), affinity of
the surface of said masking member (31) with the paint
reduces and the film of the paint is easily peeled from
the surface of said masking member (31) so. that said
masking member (31) can be repeatedly used after peeling
the film of the paint .
Figure 4 to Figure 6 relate to the second embodiment of
the present invention. Referring now to Fig. 4 to Fig.
6, a masking member (32)~comprises a body (32A) having a
vessel form consisting of a rectangular bottom and
perpendicular walls which extend upwards from the
perimeter of said bottom, and a flange (32B) which is
extended from the upper edges of said walls and an
adhesive layer (32C) formed on the under surface of
said body (32A), with said body (32A) manufactured by
vacuum forming of a sheet consisting of polyethylene
telephthalate in which 30'~ by weight of talc is mixed.
An adhesive layer (32C) is formed on the under surface
of said body (32A) and said adhesive layer (32C) is
covered with a release sheet (32D). Said masking
member (32) is attached to an even part (2) of the
surface of an article (1) the same as the first
embodiment of the present invention.-
In this embodiment, said coating layer (4) is cut by
said flange (32B) of said masking member (32) as shown
in Fig. 5. As the results, said masking member (32) may
be smoothly removed from said part (2) of said surface
of said article (1) by a worleer's hand without
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.~
obstruction of said coating layer (4). Said masking
member (32) is easily manufactured by vacuum forming and
can be reused the same as the first embodimen t. ,
A number of masking members (32) of this embodiment mad
advantageously be produced by vacuum forming, if
desired. Referring to Fig. 6, a number of bodies (32A)
I
of ma king member (32) are formed arranged in rows and
limes, and each body (32A) is connected to the other
body (32A) by the flange (32B). Cutting lines (32E) or
i
grooves are formed between said flange (32B) ana i
another said flange (32B) and when said masking member i
(32) is used, said masking member (32) is broken along
said cutting lines (32E) or grooves by hand. Said
cutting lines (32E) or groovess may be formed
simultaneously with vacuum forming or after vacuum .
forming. ,
Figure 7 relates to the third embodiment of the present
invention. In this embodiment, a masking member (33)
comprised a body (3~A) having a vessel form consisting
of a rectangular bottom from which a grip (33D) is
risen and perpendicular walls which extend upwards frorh
the perimeter of said bottom and an adhesive layer (33B)
formed on the under surface of said body (33A), with
said body (33A) manufactured by vacuum forming of a
sheet consisting of polyamide in which 40$ by weight of
calcium carbonate is mixed. Said adhesive layer (33B)
is covered with a release sheet (33C) the same as the
first embodiment. The masking member (33) of this
embodiment is easily handled by holding said grip (33D)
of said masking member (33) and is easily manufactured
by vacuum forming and can be reused the same as the
first embodiment.
[Masking member Type B]
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r
Masking member Type B is used to protect an even surface
or a protruding part of an article. Said masking
member B is manufactured by vacuum forming of two
layers sheets consisting of polyetherester imide ire
which 30% by weight of glass fiber is mixed and
polypropylene sheet in which l5% by weight of calcium
carbonate and 5% by weight of stylene-butadiene
elastomer is mixed.
Figure 8 and Figure 9 relate to a fourth embodiment of
tl~e present invention. Referring now to Fig. 8 and
Figure 9, a masking member (34) comprises a body (34A)
having a vessel form consisting of a rectangular bottom,
perpendicular walls which extend upwards from the
perimeter o~f said bottom, a flange (34B) which is
extended from the upper edges of said walls, and an
adhesive layer (34C) formed on the surface of said
flange (34B). Said adhesive layer (34C) is covered with
a release sheet (34D).
Referring to Figure 9, when said masking member (34) is
used, said release sheet (34D) is removed from said
adhesive layer (34C) and said masking member (34) is
then attached to an even part (2) of the surface of an
article (1) by said adhesive layer (34C) thereof. After
said masking memeber (34) is attached to said part (2)I,
of said surface of said article (1) is not subjected ta,
said coating since said part (2) is covered with said'
masking member (34). After forming a coating layer (4),
said masking member is removed by a worker's hand.
Further, said even part (2) may have hole(s). And
further, as shown in Figure 10, said masking member (34)
is also used to protect a protruding part (21) of said
article (1) by covering said protruding part_(21) with
said masking member (34). Said masking member (34) is
easily manufactured by vacuum forming and can be reused
without deformation.
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r
Figure 11 and Figure 12 relate to the fifth embodiment
of the present invention. In this embodiment, a
masking member (35) comprises a body (35A) having a
vessel form consisting of a circular bottom, an inner
perpendicular wall which extends upwards from the
circumference of said bottom, a flange (35B) which is
extended from the upper edge of said wall, and an outer
perpendicular wall (35C) which extends downwards from
the perimeter of said flange (35B), and an adhesive
layer (35D) formed on the surface of said flange (35B).
Said adhesive layer (35D) is covered with a release
sheet (35E).
When said masking member (35) is used, said release
sheet (35E) is removed from said adhesive Iayer (35D)
and said masking member (35) is then attached to an even
part (2) of the surface of an article (1) by said
adhesive layer (35D) thereof, and said part (2) has a
hole (22). After said masking member (35) is attached
to said part (2), a coating is effected on the surface
of said article (1) to form a coating layer (4) as
shown in Fig. 12. Said masking member (35) can be
removed from said part (2) of said article (1) by a
worker's hand without obstruction of said coating layer
(4). Said-masking member (35) is easily manufactured
by vacuum'forming and can be reused the same as the
fourth embodiment. Further, said part (2) of said
article (1) may be an even part without hale (22).
[Masking member Type CI
Masking member Type C is used to protect holes) of an
article. Said masking member C is manufactured by
vacuum forming of a sheet Consisting of methylpentene-
copolymer.
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Figure 13 and Figure 14 relate to the sixth embodiment
of the present invention. In this embodiment, a
masking member (36) consists of an inserting part (36A)
having a vessel form consisting of a circular bottom and
a perpendicular wall which extends upwards from the
circumference of said bottom, and a flange (36B) which
is extended from the upper edge of said wall.
When said masking member (36) is used, said masking
member (36) protects the inside of a hole (22~) of an
article (1) by inserting said inserting part (36A) into
said hale (22) as shown in Fig.- 14 and said flange
(36B) of said masking member (36) covers the
surroundings'of said hole (22). After which, a coating
is effected on the surface of said article (1) to form
a coating layer (4) and the inside and surroundings of
said hole (22) are not subjected to said coating.
After said coating, said masking member (36) may be
removed from said hole (22) by hand. As said masking
member (36) has a good heat resistance and does not
deform during curing process of said coating layer (4),
said masking member can be reused.
Further in a case where the primer coating treatment
using an acrylic synthetic resin including a quaternary
ammonium salt is effected on the surface of said
masking member (36), the film of the paint may be
strongly bonded with..the surface of said masking member
(36) and after the heating treatment, said film of the
paint does not peel from the surface of said masking,
member (36) so,that pieces of the film of the paint
peeling from the surface of said masking member (36) are
not formed to avoid contamination of the circumference
by said pieces of the film of the paint. Accordingly,
said masking member (36) may be preferably used
repeatedly without peeling the film of the paint.
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15U~62
Figure 15 relates to the seventh embodiment of. the
present invention. .In this embodiment, a masking
member (37) comprises, an inserting part (37A) having a
vessel form consisting of a circular bottom from which a
grip (37C) is risen, and perpendicular wall which
extends upwards from the circumference of said bottom,
and a flange (37B) which is extended from the upper edge
of said wall. The masking member (37) of this
embodiment is used the same as the sixth embodiment and
is easily handled by holding said grip (37C) when said
masking member (37) is inserted into the hole of the
article or removed from the hole. Said masking member
(37) is easily manufactured by vacuum forming and can
be reused the same as the sixth embodiment.
Figure 16 relates to the eighth embodiment of the
present invention. In this embodiment, a masking member
(38) consists of an inserting part (38A) having vessel
form consisting of a cross-shaped bottom and a
perpendicular wall which extends upwards from the
perimeter of said bottom, a flange (38B) which is
extended from the upper edge of said wall, and a
perpendicular wall (38C) which extends upwards from the
circumference of said flange (38B).
Said masking member (38) is inserted into a hole (22) of
the article (1) by said inserting part (38A) the same
as the sixth embodiment and further said masking member
(38) is supported in the inner wall of said hole by
only partially contacts, at the tips of said inserting
park (38A) so-that attaching and removing of said
masking member (38) to(from) the hole may be very easy.
Further, the material of said masking member (38) may
be less than the masking member having cylindrical form.
Figure 17 and Figure 18 relate to the ninth embodiment
of the present invention. In this embodiment, a
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zi5o3sz
r
masking member (39) consists of an inserting part (39A)
having vessel from consisting of circular bottom from
which a grip (39E) is risen and an inner perpendicular
wall which extends upwards from the circumference of
said bottom, a lower flange (39B) which is extended from
the upper part of 'said wall, an outer perpendicular
wall (39C) which extends upwards from the circumference
of said lower flange (39B), and an upper flange (39D)
which is extended from the upper part of said wall
(39C), and plural radiated grooves (39F) and (39G) are
respectively formed in said lower flange (39B) and said
upper flange (39D).
As shown in Figure 18 said masking member (39) is
inserted into a hole (22),of an article (1) the same as,
the sixth embodiment and since a coating layer (4) may
be cut by said upper flange (39D) of said masking'
member (39); the removing of said masking member (39)
from said hole (22) may be.very smooth without
obstruction of said coating layer (4) and further said
grooves (39F) and (39G) respectively reinforce said
lower and upper flanges (39B) and (39D). Said masking
member (37) is easily manufactured by vacuum forming andy
can\be reused the same as the sixth embodiment.
[Masking member Type-D]
Masking member Type D is used to protect the extending'
part of the article and manufactured by vacuum forming
of a sheet consisting of polycarbonate in which 50~ by
weight of calcium carbonate is mixed.
Figure l9 and Figure 20 relate to the tenth embodiment
of the present invention. In this embodiment, a
masking member (310) consists of a body (310A) having a
cylindrical vessel form, which has a slit (310B) formedd
from the opening end of said body (310A). An extending
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~l~o~s2
part (23) of the article (1) to be protected is
inserted into said slit (3108) of said masking member
(310) and the coating layer (4) is not formed on said
extending part (23) since said extending part (23) is
protected by said masking member (310) as shfown in
Figure 20. After coating, said masking member (310) is
removed from said extending part (23) by a worker's
hand. Said masking member (310) is easily manufactured
by vacuum forming and can be reused.
Figure 21 to Figure 26 relate to an applied embodiment
in which the masking.members Type A, B, C and D are
piled to the under side (12) of the car body (11) for
corrosion, sound and vibration-proof.
As shown in Fig. 21, the masking members of the present
- invention are attached to parts A, B, C, D and E of the
under side (12) of a car body (11). Namely, as shown in
Figure 22, the masking member Type C, such as said
masking member (36) of the sixth embodiment may be
attached to a hole (22A) of part A into which a spring
axis of a forward wheel is inserted and the
circumference of the hole (22A) is used as a bed for the
spring.
As shown in Figure 23, the masking member Type B, such
as said Type B masking member (35) of the fifth
embodiment is attached to a bolt (21A) of part B.
As shown in Figure 24, the Type C masking member (37) of
the seventh embodiment is inserted into a drainage hole
(22B), as shown in~Figu.re 25, the masking member..(310)
of the tenth embodiment is attached to a bracket (23A)
of part D, and as shown in Figure 26, the Type A
masking member (31) of the first embodiment is attached
to a screw hole (22C). Thus, said hole (22A), said bolt
(21A), said drainage hole (22B), said bracket (23A) and
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215~362~
said screw hole (22C) are protected by said masking
members of the present invention from coating.
Figure 27 and Figure 28 relate to the eleventh
embodiment of the presentwinvention. A masking member
(311) is used to protect a bumper (13), and a fitting
part (311A) which is fitted in an air-intake (13A) of
said bumper (13), a flange (311B) having a C-shaped
cross section on the lower edge of said fitting part
(311A), and horizontal ribs (311C),(311D) and vertical
ribs (311E),(311F) for reinforcement are formed in said
masking member (311).
when the masking member (311) is attached to the bumper
(13) by fitting the fitting part (311A) in the air-
intake (13A) of said bumper (13), as said fitting part,
(311A) of said masking member (311) is reinforced by the
flange (311B) and prevented from obstruction, fitting
is easily achieved. In addition, since the surface of
said flange (311B) is substantially on the same plane as
the lower edge of said air-intake (13A) of said bumper
(13) in this state, as shown in Fig. 28, it can be
easily fixed thereover by the adhesive tape (311G).
Material for the masking member ( 311 ) of the above
described embodiment is engineering plastic in which
polyamide is mixed with PPE.
Figure 29 to Figure 31 relate to the twelfth embodiment
of the present invention. A masking member (312) of
this embodiment is also used to protect a bumper (13).
A pair of air-intakes (13A),(13A) is formed on, said
bumper (13), and vertical ribs (13'C),(13C) and
horizontal ribs (13D),(13D) are formed in the inside of
said air-intakes-(13A),(13A), and further grooves (13B)
,(13B) are formed on the upper edge of the air-intakes
(13A),(13A) as shown in Figure 30. Flight parts (13E)
,(13E) are also formed on the lower edge of the air-
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intakes (13A)~,(13A).
Said masking member (312) is to protect the air-intakes
(13A),(13A) of the bumper (13)-from coating, and the
masking member (312) has a pair of fitting parts (312A)
,(312A) which is fitted in the air-intakes (13A),(13A)
of said bumper (Z3). On the upper edge of said fitting
parts (312A),(312A), a fitting flanges (312B),(3128)
are formed. On the lower edge of said fitting parts
(312A),(312A) C-shaped bends (312C),(312C) are formed.
Also horizontal fitting ribs (312D),(.312D) and vertical
fitting ribs (312C),(312C) are formed on said fitting
parts (312A),(312A) of said masking member (312).
When the masking member (312) is attached to the bumper
(13) by fitting the fitting parts (312A),(312A) in the
air-intakes (13A),(T3A) and fitting a horizontal ribs
(13D),(13D) and vertical ribs (13C),(13C) of the air-
intakes (13A),(13A) respectively in horizontal fitting
ribs (312D),(312D) and vertical fitting ribs (312E)
.E312E). As shown in Figure 3l, fitting flange (312B)
,(312B) on the upper edge of the fitting parts (312A)
,(3128) of said masking member (3I2) is fitted in
grooves (13B),(13B) without using adhesive tape.
Since the lower edge of the fitting parts (312A),(312A
is reinforced by the bends (312C),(312C) and is
protected from deformation, fitting is easily achieved:
Since the surface of said bends (312C),(312C) is
substantially on the-same plane as the flight parts
(13E),,(13E) of said air-intakes (13A),(13A) of the
bumper (13) in this state, as shown in Fig. 31, it can
be easily fixed thereover by the adhesive tape (312F).
Material for the masking member (312) of the embodiment
is the engineering plastic of the eleventh embodiment:
Figure 32 and' Figure 33 relate to the thirteenth
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21503fi2
embodiment of the present invention. In this
embodiment, a masking member (313) is used to protect
plural protrusions (21),(21) of an article from a
surface treatment. Said masking member (313) comprises
a body (313A) and fitting parts (313B),(3138) projected
from said body (313A).
Said masking member (313) is. attached to said plural
protrusions (21),(21) of an article by said fitting
parts (313B),(313B) to protect said parts (21),(21) of
said article from said surface treatment as shown in
Figure 33.
Said masking member (313) is easily manufactured by
vacuum forming of two layers sheet and can be reused the
same as the fourth embodiment.
Figure 34 to Figure 36 relate to the fourteen embodiment
of the present invention. In the figures, an inlet
(14) of the fuel tank of the car consists of a hole
part (14A); an inner flange part (14B) surrounding said'
hole part (14A), and an outer flange part (14C) formed
at the outside of said inner flange part (14B),
intermediating a packing groove (14D) and said inner
flange part (14B) is slightly higher than said outer
flange part (14C).
A masking member (314) consists of a central disk part
(314A), an outer ring part (314C) surrounding said
central disk part (314A) intermediating a guide groove,
(314B); a grip (314D) projecting from said central disk
part (314A) and an adhesive layer (314E) formed on the
backside of said outer ring part (314C) and said masking
member (314) is manufactured by the vacuum forming of a
polymer alloy film consisting of PPE and polyamide
containing 30$ by-weight of calcium carbonate.
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When said masking member (314) is attached to said inlet
(14), the position of said masking member (314) is
adjusted by inserting said inner M ange part (14B) of
said inlet (14) into said guide groove (314B) of said
masking member (314) and then said adhesive layer (314E)
of said outer ring part (314C) is pressed to the top of
said outer flange part (14C) as shown in Figure 35 and
the paint is prevented from going into the fuel tank
through said inlet (14) by said masking member (314).
As no projecting part rising from said outer ring part
(314C) in the backside of said masking member (314),
the adhesive can be applied on the backside of said
outer ring part (314C) to form said adhesive layer by a
roll coater (5) as shown in Figure 36.
Figure 32 to Figure 40 relate to the fifteenth
embodiment of the present invention. In the figures, a
masking member (315) consists of a body (315A) inside
of which an inserting part (315B) for a pillar body
(15A) of a pillar member (15) is formed and a pair o'f
flange inserting parts (315D),(315D) formed along the
lower end of slide walls (315C),(315C) of said body
(315A) and in which a pair of flanges (15D),(15D) are
w respectively inserted and reinforcing ribs (315E) are
formed on the circumference of said body. Said masking
member.(315) is manufactured by the same method using
the same material as the fourteenth embodiment.
Said masking member (315) is attached to said pillar
member (15) and said pillar member (15),is constituted
by an outer panel (15A) and'an inner panel (15B) and
consists of a pillar body (15A) and flanges (15D),(15D)
formed along the lower ends of a pair of side walls
(15C),(15C). .
Said masking member (315) is attached to said pillar
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~l~o3s~
member (15) by inserting said pillar body (15A) into
said inserting part (315B) of said masking member (315)
and inserting flanges (15D),(15D) of said pillar body
(15A) into said flange inserting parts (315D),(315D) of
said masking member (315) respectively as shown in
Figure 38. After said masking member (315) is attached
to said pillar member~(15) as above described, a
surface treatment such as a coating, plating or the like
is effected and after said surface treatment, said
masking member (315) is removed from said pillar member
(15).
To manufacture said masking member (315), first a,
masking member assemblage (315G) consisting of a plural
number of said masking members (315) connected
respectively through connecting parts (315F) is molded
by the vacuum forming, press molding, and the like using
a thermoplastic resin sheet as shown in Figure 39, and
then said masking member assemblage (315G) is cut by a
cutter (6) at said connecting parts (315F) as shown in
Figure 40 and the resulting cut parts are further cut
along dotted lined shown in Figure 40 by a cutter, a
shears or the like to obtain said masking member (315).
Figure 41 and Figure 42 relate to the sixteenth
embodiment of the present invention. A masking-member'
(316) in this embodiment consists of a body (316A)
. inside of which an inserting part (316B) for a pillar
body (15A) of a pillar member (15) is formed, and
projections (316F) formed on the insides of a pair of
lower side walls (316E),(316E) which are formed
respectively along the lower ends of a pair of side
walls (316C),(316C) of said pillar body (316A)
intermediating flight parts (316H)(316H), and flange
inserting parts (3~16D),(316D) are formed upon said
projections (316F) and further reinforcing ribs (316G)
are formed on the circumference of said body (316A).
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~15Q3~2
Said masking member (316) is made of a polymer alloy
consisting of PPE and polystyrene containing 30% by
weight of calcium carbanate and is manufactured by
vacuum forming using said polymer alloy sheet.
Said masking member (316) is attached to a pillar mEmber
(15) by inserting a pillar body (15A) of said pillar
member (15) into said inserting part (3168) of said
masking member (316) and inserting flanges (15D),(15D)
of said pillar .member (15) into said flange inserting
parts (316D),(316D) of said masking member (316) as
shown in Figure 42.
Figure 43 to Figure 46 relate to the seventeenth
embodiment of the present invention. A masking member
(317). shown in Figure 43 consists of a body (317A)
inside of which -an inserting part (3178) of a pillar
body (15A) of a.pillar member (15) is formed, flange
inserting parts (317D),(317D) into which flanges (15D)
,(15D) of said pillar member formed along a~ pair of
side walls (317C),(317C) of said body (317A) is
inserted, a pair of back sheets (317E),(317E) extending
from said flange inserting parts (317D),(317D), and an
upper sheet (317F) extending from th,e upper end of said
body (317A), and reinforcing ribs (317G) are formed on
the circumference of said body (317A) and said masking
member (317) is manufactured by the same method using
the same material as the sixteenth embodiment. Said
masking member (317) is provisionally attached to a
pillar body (15A) of a pillar member (15) shown in
Figure 44 by inserting said pillar body (15A) into said
inserting part (317B) of said masking member (317) as
shown in Figure 44 and~inserting said flanges (15D)
,(15D) of said pillar member (15) into said flange
inserting parts (317D),(317D), respectively as described
in the fourteenth embodiment.
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2150362
After said masking member (317) is provisionally
attached to said pillar member (15), said back sheets
(317E),(317E) are respectively turned over to be
attached to the back side of said pillar member (15) and
said back sheets (317E),(~17E) are mutually fixed by
such as an adhesive tape (317H), a tacker, or the like
as show in Figure 45.
As above described, after said masking member (317) isa
attached to said pillar member (15) as shown in Figure
46, a-surface treatment such as a coating, a plating or
the like is\effected. Since the back side of said
pillar member (15) is covered with said back sheets
(317E),(317E) of said masking member (317), said
surface treatment is not effected on the backside of
said pillar member (15). After said surface treatment,
said masking member (317) is removed from said pillar
member (15) by peeling off-said adhesive tape (317H)
from back sheets (3I7E),(317E) of said masking member
i
(317).
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