METHODE DE FABRICATION DE MATERIAUX DE DECORATION EN BOIS DE SAPIN

METHOD FOR MANUFACTURING FIR WOOD DECORATION MATERIALS

Abrégé anglais

The present invention discloses a method for manufacturing a fir wood
decoration
material by adding a "sealing-coating" technique to a white paste mending
process for
manufacturing traditional wood decoration materials. Due to the color staining
and oil
staining properties, the knots of wood material is mended by a white paste
after a fir
decoration material is formed. General wood flour is used for the mending, and
then
sealing paint is coated onto the white paste to preclude the occurrence of
color staining
and oil staining. After the defects of color stain, oil stain, and obvious
lines of the fir
wood are eliminated, it is not necessary to remove the knots of the fir wood
during its
manufacturing, and the coating will not be peeled off easily, so as to improve
the yield
rate and lower the cost.

Revendications

WHAT IS CLAIMED IS:
1. A method for manufacturing fir wood decoration material, comprising the
steps of:
preparing the fir wood material using convention steps;
applying a white paste mending material to the fir wood;
applying a sealing paint to said white paste to cover all knots, tree cores,
and
darker wood;
applying an additional coating material to said white paste mending material
and
the sealing paint; and
applying a finishing coating to said additional coating.
2. The method for manufacturing fir wood decoration material of claim 1,
wherein
said sealing paint is an oil-based paint or a water soluble paint.
3. The method for manufacturing fir wood decoration material of claim 2,
wherein
said additional coating material is comprised of a coating glue and calcium
carbonate.
4. The method for manufacturing fir wood decoration material of claim 4,
wherein
said coating glue is a polyethylene emulsified glue.
5. The method for manufacturing fir wood decoration material of any one of
claims 1
to 4 including the step of heating the fir wood material after the application
of said
sealing paint for a period of time at a temperature below 70° C to cure
the white
paste material and the sealing paint.
6. The method for manufacturing fir wood decoration material of any one of
claims 1
to 5 including the step of heating the fir wood material after the application
of said
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additional coating material for a period of time at a temperature below
60° C to
cure the additional coating material.
7. The method for manufacturing fir wood decoration material of any one of
claims 1
to 6 wherein the thickness of said white paste material is in the range of
0.15 to
0.20 mm, the thickness of said sealing paint is in the range of 0.005 to 0.10
mm,
The method for manufacturing fir wood decoration material of claim and the
thickness of said additional coating is in the range of 0.10 to 0.15 mm.
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Description

CA 02511965 2007-11-29
METHOD FOR MANUFACTURING FIR WOOD DECORATION MATERIALS
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to a method for manufacturing wood decoration
materials, and more particularly to a method for manufacturing fir wood
decoration
materials.
Description of the Related Art
In general, traditional wood decoration materials adopt pine wood or
miscellaneous
wood. During the manufacturing process, it is necessary to remove the knots of
pine
wood and paint a special coating with a thickness of about 1 mm to fully cover
the wood
color and defects, and finally applyt a standard paint. Since the coating may
be easily
peeled off, the rate of defects and the cost are high. If fir wood is used as
a substitute for
pine wood, it still requires the prior art coating technique. Since fir wood
is soft and has
many knots, the manufacturing effect is poor, even after painting a special
coating and
standard paint onto the fir wood. The defects, including color staining, oil
staining, and
obvious lines, still exist.
SUMMARY OF THE INVENTION
The present invention provides a method for manufacturing fir wood decoration
materials that substitutes fir wood for pine wood to overcome the problems
associated
with the oil staining, color staining and obvious lines of the pine wood.
To achieve the foregoing objective, the method for manufacturing fir wood
decoration materials of the present invention comprises a basic material
preparation, a
white paste mending, and a painting process, characterized by adding the steps
of (Step 1)
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CA 02511965 2007-11-29
coating a sealing paint onto all knots, tree cores, and darker wood areas on
the white paste,
and (Step 2) applying a further coating mater on the white paste.
The sealing paint can be an oil-based paint or a water soluble paint providing
a
sealing effect.
The coating material used in Step 2 is a material comprised of a coating glue
and
calcium carbonate.
The coating glue preferably is a polypropylene emulsified glue.
Since the method of the present invention involves the addition of a
"sealing-coating" technique to a white paste mending process for manufacturing
traditional wood decoration materials, and the pine wood has the color
staining and oil
staining properties, therefore after the foregoing solution is adopted and the
material is
formed, general wood flour is used in the white paste to mend the knots, and
then a
sealing paint is coated onto the white paste to preclude the occurrence of
color staining
and oil staining. After the defects of color stain, oil stain, and obvious
lines of the fir
wood are eliminated, it is not necessary to remove the knots of the fir wood
during its
manufacturing. The thickness of the coating is just about 0.3 mm to fully
cover the
wood, and the coating will not be peeled off easily, so as to improve the
yield rate and
lower the cost. Furthermore, the fir wood is much easier to obtain than the
pine wood,
and the fir wood also is light in weight with good resistance to rot.
Therefore, the
method of the present invention can be used extensively for producing wood
decoration
materials.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The method for manufacturing fir decoration materials comprises the steps of a
basic
material preparation: raw wood, chopping, sawing, steaming, backing, cutting,
planing,
connecting, trimming, piecing together, rough cutting, and forming; a white
paste
mending: painting a sealing paint and coating; and a coating process: double
scissoring,
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CA 02511965 2007-11-29
sandblasting by hands, painting, checking for acceptance and packing, and
shipping to a
warehouse.
1. Standard for Sealing Paint Technique
1. Choice of Sealing Paint
An oil-based paint with a sealing effect such as polyurethane paint or nitro
cellulose lacquer is chosen as the sealing paint. A water soluble paint such
as a
water emulsified paint can be used as well.
2. Method of Use
(a) Spray or brush a sealing paint onto all knots, tree cores, and darker wood
on the white paste for one or two times. The thickness of the sealing paint is
around 0.005 to 0.10 mm.
(b) To expedite the solidification, place the wood material into a baking room
at a temperature below 70 C for baking.
(c) Each ply of wood is separated neatly by a spacer to have good ventilation.
(d) After each ply of wood is solidified, go to the next step of manufacturing
process.
II. Standard of Coating Technique
1. Choice of Coating Material
The coating material is comprised of a coating glue and calcium carbonate.
The coating glue preferably is polyethylene emulsified glue.
Technical indexes
pH value 4-7%
Viscosity (at 25 C) 50-100Pas
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CA 02511965 2007-11-29
Technical indexes of calcium carbonate powder:
Main Content %
98
(based on CaCO3)
Water % 0.3
Whiteness % 95
Activation % 99
Granule Level 30-1000
Glue: Powder ratio is 30-50: 100, and both are mixed evenly.
2. Coating Method
A mold is polished according to the size of the white paste, and a thickness
of
the first coating is maintained at 0.15-0.20 mm and the second coating at
0.10-0.15mm.
The first coat is hard and rough, and thus it requires a small pressure and a
fast speed for the coating. The powder of the second coat is fine and the
coating is smooth and the surface is bright and clean.
The second coat is coated after the first coat is solidified for 8 hours.
The fir wood is placed into a baking room at 60 C for expediting the
solidification after the coating process.
Each ply of wood is separated neatly by a space for good ventilation.
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