Note: Descriptions are shown in the official language in which they were submitted.
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1 BACKGROUND OF THE INVENTION
A typical fiber product of this sort is a work glove
or a sheet made of cloth woven or knitted by fiber yarns,
the work glove or the sheet being formed by a vinyl
chloride resin layer. It is known that the fiber products
formed by a vinyl chloride resin layer are manufactured
mainly by a dipping method and partially by a coating
method.
Referring first to the dipping method, a knitted or
woven cloth is dipped into a vinyl chloride resin paste.
As shown in Fig. la, when each space between the fiber
yarns facing to each other is wider, the vinyl chloride
resin paste is penetrated into the space between the
facing fiber yarns due to the liquid pressure, and the
above fiber yarns are enclosed by the vinyl chloride resin
paste. In other words, the former is thrusted into the
latter. As a result, the thickness of a vinyl chloride
A resin layer X becomes larger, so that the fiber product
- provided with the above treatment becomes hard and
unexpansible in itself. From this point of view, in the
dipping method there is generally used a knitted cloth
in which each space of the facing fiber yarns is close.
This is an example of Fig. lb. In this example, the vinyl
chloride resin paste containing an oily plasticizer is
permeated into the fiber yarns l. Subsequently, since
11~64~3~
1 the vinyl chloride resin paste is induced into each space
between the facing fiber yarns l, both the former and the
latter are interwound. In other words, the fiber yarns
l are thickly enclosed by the above paste. Consequently,
the thickness of the vinyl chloride resin layer 2 becomes
larger, thereby the fiber product being hard and unexpansible.
Referring to the coating method, no liquid pressure
of the vinyl chloride resin paste is applied, so that as
shown in Fig. la the vinyl chloride resin paste can be
coated even in enlarged spaces between the fiber yarns 1.
However, as described above, the vinyl chloride resin
paste containing an oily plasticizer is permeated into the
fiber yarns l and it is induced to each space between the
facing fiber yarns 1. Therefore, the vinyl resin layer 2
becomes thicker and the fiber product coated by such a
thicker layer becomes inflexible and unexpansible.
In order to eliminate the foregoing disadvantages, a
- high viscosity vinyl chloride paste of 9,000 to 15,000 cp
(centipoise) level can be used. But even if such a paste
is employed, its penetration into the spaces between the
facing fiber yarns 1 is prevented only a little bit. And
the thickness of the vinyl chloride resin layer 2 is not
- particularly decreased.
Further, after the spaces between the facing fiber
yarns 1 of a knitted or woven cloth have been covered by
1 polyacryl resin emulsion or a polyvinyl chloride (p.v.c.)
powder, there is known a method of coating a relatively
high viscosity p.v.c. resin paste of e.g. 8,000 cP level
of a method of dipping a knitted or woven cloth into the
p.v.c. resin paste. However, because the spaces of the
fiber yarns are thickly enclosed by the above paste, the
foregoing disadvantage cannot be overcome.
As pointed out above, a conventional fiber product
formed by flexible coating has a thicker vinyl chloride
resin layer by which are enclosed the fiber yarns of a
knitted or woven cloth. For example, when this fiber
product is applied to a work glove, because of its
considerable thickness a user's operability is neither
comfortable nor efficient. In other words, due to a dull
I5 expansibility of the work glove, the user's feeling in
holding a certain ob~ect is bad, and the user's hands are
apt to become tired. Further, when this fiber product is
applied to a diaper cover, it is not agreeable to the touch
because of its hardness and unexpansibility.
In order to overcome the aforegoing defects of the
conventional art, the present invention has been achieved.
481
1 BRIEF SUMMARY OF THE INVENTION
_
Accordingly, it is an object of the present invention
to provide a fiber product such as a work glove or a diaper
cover which is formed by a thin, strong, flexible and
expansible layer of polyvinyl chloride resin, and thereby
agreeable to a user's touch.
It is another object of the present invention to
provide a fiber product formed by a thin, strong, flexible
and expansible layer of polyvinyl chloride, in which the
consumption of the polyvinyl chloride resins and fiber
yarns has been saved by thinning the pol.yvinyl chloride resin
layer and widening the spaces between the fiber yarns
facing to each other.
Speaking more concretely, each space between the
facing fiber yarns of a knitted or woven cloth is to be
formed 1.5 to 4 times as large as the thickness of each
fiber yarn~and the outer overall surface of the fiber
yarns are to be coated by a layer capable of repelling
any coating material like a polyvinyl chloride resin.
. 20 This repelling layer prevents a polyvinyl chloride resin
paste (hereinafter called "p.v.c. resin") from penetrating
into the spaces between the facing fiber yarns or from
permeating into the fiber yarns. Accordingly, the p.v.c.
resin paste can be coated under no pressure on one outer
portion of the fiber yarns. The thus obtained expansible
,.
1116481
1 and flexible p.v.c. layer is applicable to a work glove,
a diaper cover, a sheet of the like.
Other and further objects, features and advantages
of the present invention will appear more fully from the
following description.
~:~i6~81
1 BRIEF DESCRIPTION OF T~E DRAWINGS
Fig. la and Fig. lb are each a partially cutaway
vertical section view of a conventional fiber product
formed by flexible coating.
Fig. 2 is a perspective view of a work glove as
an example according to the present invention.
Fig. 3a is an enlarged front view of a knitted cloth
for the work glove in Fig. 2.
Fig. 3b is an enlarged front view of a woven cloth
for the work glove in Fig. 2.
Fig. 4 is a partially cutaway vertical section view
of the work glove in Fig. 2.
1 DETAILED DESCRIPTION OF THE INVENTION
A work glove an an example of this invention will now
be described with reference to Figs. 2, 3a, 3b and 4.
Numeral 3 is a cloth knitted by fiber yarns 5 and numeral
4 is a cloth woven by the fiber yarns 5. Each space
between the fiber yarns 5 facing to each other is formed
1.5 to 4 times as large as the thickness of the fiber
yarn 5. Numeral 6 is a repelling layer made of fluorine
resin, silicon resin or the like having oil repellency,
and the repelling layer 6 is coated on the outer overall
surface of the fiber yarns 5. Numeral 7 is a layer made
of p.v.c. resin which has been heated and geled by dropping
a p.v.c. resin paste on the cloth 3 or 4 under no liquid
pressure or by spraying it thereupon without any pressure.
The above repelling layer 6 can prevent the p.v.c. resin
paste containing oily plasticizer from penetrating into
each space between the facing fiber yarns 5, so that the
p.v.c. resin layer 7 can be coated thinly as lf it is
just mounted on one outer portion of the fiber yarns 5
of the cloth 3 or 4.
Further, when each space between the fiber yarns 5
facing to each other is over four times larger than the
thickness of each yarn, the weight of the p.v.c. resin
paste becomes excessive, subsequently it having the danger
to penetrate into the space between the facing fiber yarns
- 8
. .
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1 5. Accordingly, each space between the facing fiber
yarns 5 is to be limited up to four times larger than the
thickness of each yarn.
The p.v.c. resin layer 7 coated on the work glove as
specified above is so thin, expansible and flexible that
its operability is remarkably improved. Particularly,
when a user grasps an object by this work glove, its
grasping feeling is very natural, so that it is available
for a smooth motion of fingers.
Further, the p.v.c. resin layer is formed so thin
that its consumption can be curtailed. Still further,
since it is possible to widen the space between the yarns
5 of the cloth 3 or 4, it is also available for saving
the consumption of yarns.
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