JP2000167975A - Surface cosmetic sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate such a fault that a longitudinal joint part is built up slightly when the surface of a matrix is covered with a conventional surface decorative sheet. SOLUTION: Thin reinforcing paper 3 excellent in moisture absorbability, tensile force and bending properties is bonded to the rear surface of veneer 2 obtained by slicing columnar wood to form a backed veneer 4 and a saw-tooth connection part consisting of ridge parts 5 and trough parts 6 is formed to the bottom end and tip end of the backed veneer 4 and the front and rear backed veneers 4, 4 are brought to a connected state by fitting the ridge parts 5 and the trough parts 6 to each other. In this connected state, a long and thin connection sheet 8 is bonded to the backed veneers on the side of the reinforcing paper 3 to connect the connection part 7 in an unseparated state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative surface sheet, and more particularly, to decoratively finish the surface of a base material (hereinafter referred to as a base material) of an interior material such as a furniture material, a wall material of a building, and a pillar material. The present invention relates to a sheet-like wood-like thin plate used.

[0002]

2. Description of the Related Art Conventionally, for example, in order to reduce the weight and economically manufacture various kinds of wooden furniture, a decorative thin plate is coated on the surface of a base material made of wood or a mixture of wood powder and resin. A method of commercializing products by bonding and finishing is widely used. The above-mentioned thin plate for surface decoration is made of a raw material obtained by sawing oak, oak, ash, ebony, ebony, etc., having a predetermined length and width into a columnar shape, and having a thickness of 0.1 to 0.45 mm. A sheet of slicing wood is attached to the back side of the wood board, which is sliced to a certain degree, and the sheet is used to cover the surface of the base material. Is issued.

[0003] However, the wood plate formed as described above has a different size (area) depending on the thickness of the raw material.
In addition, since the area of the timber plate is insufficient to cover the entire surface of the base material, it is necessary to connect the timber plate in the grain direction or in the direction perpendicular to the grain to increase the width and length.

[0004] In this connection, a wood board sliced into a belt shape of a predetermined length is joined by butt-joining side edges extending in the grain direction to have a wide width of about 60 to 90 cm, and then reinforcing paper is provided on the back surface. Paste, and then line up the backing boards in the vertical direction and match the edges of the original mouth (the edge closer to the root of the wood) and the edge of the end edge (the edge used for the branches and leaves of the wood) to each other It is performed by a method of joining, but when the side edges extending in the grain direction are simply joined to each other and joined, no apparent discomfort is caused. However, when the base edge and the end edge are simply butt-joined, irregularities in the grain are conspicuous at the straight butting line extending in the width direction as a boundary, and a sense of incongruity is remarkably left.

[0005] In order to alleviate such discomfort, the connection between the edge of the front opening and the edge of the end of the surface decorative plate has been made in recent years by the following method.

That is, the length is 2 to 4 m and the width is 8 to 20 cm.
After slicing the raw materials described above in a slice of 0.2 to 0.35 mm in thickness and aligning several wood plates 22 in the width direction, reinforcing paper 23
For example, a vinyl acetate emulsion is applied to the entire surface of the substrate and bonded to the reinforcing paper 23 to form a wide backing plate 24. As the reinforcing paper 23, Japanese paper having a thickness of about 0.1 mm, which is excellent in hygroscopicity, tensile strength, and flexibility, is used. Next, as shown in FIGS. 9 and 10, the length of each tooth is set to about 25 to 30 mm and the pitch P is set to about 10 mm at the base edge and the end edge of each backing plate 24, 24. Thus, the crests 25 and the valleys 26 of the teeth facing each other form a saw-tooth-shaped butt joint 27 in which the teeth 25 and the valleys 26 can be fitted to each other. Subsequently, as shown in FIG.
After fitting the ridges 25 and the valleys 26 of the connecting portion 27 of the connecting portion 27 and abutting them, the reinforcing portion 23 on the back side of the reinforcing paper 23 of the connecting portion 27 as shown in FIG. Like the paper 23, a long surface decorative sheet 2 is formed by bonding and connecting a tape-shaped connecting paper 28 having a thickness of about 0.04 to 0.065 mm, which is excellent in hygroscopicity, tensile strength and flexibility.
1

[0007]

However, the conventional surface decorative sheet obtained by the above-described connection method is
As shown in FIG. 10, since a tape-shaped connection paper 28 exists at the connection portion 27 of the surface decorative sheet 21, when the surface of the base material 10 is covered with the surface decorative sheet 21, As shown in FIG.
However, there is a problem that, although slightly, a local bulge occurs on the surface of the base material 10, and the bulge portion appears as a step depending on the condition of light.
In addition, the presence of the tape-shaped connection paper 28 on the back surface side of the connection portion 27 causes a problem that when the connection portion 27 is located at a corner of the base material 10, it cannot be firmly bonded to the base material. Therefore, before or after laminating the surface decorative sheet 21 to the base material 10, it is necessary to grind and grind the surface side or the back side of the connection portion 27 of the surface decorative sheet 21 with sandpaper or the like. Was.

SUMMARY OF THE INVENTION The present invention has been made in order to improve the disadvantages of the conventional surface decorative sheet, and has a surface which does not have a local bulge at a connection portion of the surface decorative sheet when coated with a base material. It is intended to provide a smooth surface decorative sheet.

[0009]

According to the present invention, the connecting portion of the backing plate having the reinforcing paper bonded to the back surface has a width dimension equivalent to that of the backing plate, instead of a tape-like connecting material. The above problem was solved by attaching a long connection sheet to the entire surface of the reinforcing paper. That is, the surface decorative sheet of the present invention has a thickness of about 0.1 obtained by slicing columnar wood.
~ 0.35mm thickness on the back of 0.35mm wood plate
mm reinforced paper is laminated to form a backing board, and a serrated connection consisting of peaks and valleys is formed at the edges of the base and end of the backing board. The peaks and valleys of the connecting portions of the pasting plate are fitted and connected to each other, and the entire back surface of the reinforcing paper of the connected backing plate has a length of approximately 0.05 to 0.5 mm long. The connection sheet is bonded, and the connection portions of the front and rear backing boards are connected in an inseparable state.

As the reinforcing paper to be bonded to the back surface of the sliced wood board, resin-impregnated paper having a thickness of 0.03 to 0.15 mm, excellent in tensile strength and flexibility, and Japanese paper is preferable. In addition, as a long connection sheet to be bonded to the back surface of the reinforcing paper, various thin sheets having a strength and flexibility similar to that of the reinforcing paper and having a thickness of about 0.05 to 0.5 mm, for example, It can be used for wet non-woven fabric, dry non-woven fabric, spun-bonded non-woven fabric, non-combustible sheet, woven fabric, knitted fabric or net fabric, and for applications that require suppression of transmission of liquids, gases, chemicals, etc. It is preferable to use a resin film or a metal foil as the connection sheet.

It is preferable that the thickness of the finished surface decorative sheet does not exceed about 0.65 mm in consideration of the covering property (lapping property) of the curved surface and the corner of the base material.
When the thickness of the surface decorative sheet is 0.7 mm or more, it becomes difficult to beautifully cover the curved surface and the corners of the base material, particularly the corners.

[0012] The adhesive for bonding the connection sheet to the board and the reinforcing paper and the back surface of the reinforcing paper is not particularly limited as long as it is an emulsion type, but a modified vinyl acetate emulsion is preferably applicable.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 6 showing an embodiment. As shown in FIG. Several wood boards 2 obtained by slicing natural or synthetic wood sawn in a columnar shape are connected in parallel in the width direction, and reinforcing paper 3 is attached to the back surface thereof.
2 and 3, a saw-tooth-shaped connecting portion 7 composed of a peak portion 5 and a valley portion 6 is formed at the front and rear edges of the front and rear ends. Of the connection portion 7
As shown in FIG. 4, the valley portion 6 is fitted and abutted and connected, and a long connection sheet 8 is adhered to the entire back surface of the reinforcing paper 3 of the connected backing plate 4 so that the front and rear portions are bonded. Are connected in a non-separable state.

[0014]

EXAMPLE 1 A wooden plate 2 having a thickness of about 0.25 mm obtained by slicing a columnar oak material having a length of about 400 cm and a width of about 15 cm was prepared.
The side edges of the adjacent wood plates 2 and 2 are juxtaposed side by side in the width direction, with the sheets being the front opening and the rear end being the front end, respectively. FIG. 7 and FIG. As described above, while a tape 13 having a thickness of about 10 mm provided with a hot melt film layer 12 having a thickness of about 0.05 mm on the back surface of the release paper 11 is superimposed on the release paper 11 with a hot iron, After connecting the butt side edges of the adjacent plate plates 2 and 2 by pressing the release paper 1
1 is peeled off to form a wide wood plate 2 having a width of about 60 cm.

Next, a reinforcing paper 3 having a thickness of 0.07 mm is attached to the connecting film surface side of the plate 2 with a modified vinyl emulsion to form a backing plate 4, and the backing plates 4, 4 are formed. Prepare many pieces. Subsequently, the crests 5 and the valleys 6 having a length of about 2.5 cm and a pitch of about 10 mm are formed on the edge of the base edge and the edge of the edge of the back of the backing board 4, respectively. Saw-tooth connection 7 capable of phase fitting
Are formed and arranged in the vertical direction, and the connecting portions 7 at the front and rear are formed.
The ridges 5 and the valleys 6 are fitted and abutted to form a connection state, and a long connection sheet 8 having a thickness of 0.07 mm is formed on the entire back surface of the reinforcing paper 3 of the backing plate 4 in this connection state. And the connecting portions 7 of the front and back backing plates 4 and 4 were connected in a non-separable state to form a surface decorative sheet having a thickness of about 0.4 mm.

As the reinforcing paper 3 in Example 1, resin-impregnated paper manufactured by Daifuku Paper Co., Ltd .: ND-50-C (weight: 52 g / m ² , air permeability: 6.5 seconds / 100 cc, tensile strength: vertical) 4.8kg / 5cm width, 1.9kg / 5cm width,
Elongation: 3.0% in length and 6.6% in width). As the connection sheet, a commercially available wet nonwoven fabric having the same physical properties as the reinforcing paper was used. Although the thickness of the obtained surface decorative sheet was extremely thin, 0.4 mm, it was excellent in tensile strength and flexibility, and had physical properties suitable for surface decorative use (lapping material) of various base materials. FIG. 6 is a sectional view showing a state where the surface of the base material 10 is covered with the surface decorative sheet 1 of the present invention.

Embodiment 2 The thickness of the connection sheet 8 of the above-mentioned embodiment 1 is 0.25 mm.
In the same manner as in Example 1, a surface decorative sheet 1 having a thickness of 0.65 mm was obtained. The obtained surface decorative sheet 1 has a flame-retardant effect due to the ceramic sheet, and is suitable for surface decoration of wall materials.

EXAMPLE 3 A thickness of about 0.3 mm obtained by slicing a columnar oak material having a length of about 400 cm and a width of about 15 cm was used as the wood board 2, and the reinforcing paper 3 was 0.05 mm thick. Daifuku Paper Co., Ltd .: Product name ND-50-C, and using a long aluminum foil having a thickness of 0.01 mm as the connection sheet 8, the surface decorative sheet 1 having a thickness of about 0.4 mm was obtained. did. The obtained surface decorative sheet 1 has excellent waterproofness as well as flexibility, and can be preferably applied as a surface decorative material for wall materials.

[0019]

As described above, the surface decorative sheet 1 of the present invention is described.
Has a thickness of about 0.1 to 0.3 obtained by slicing columnar wood.
A reinforcing paper 3 having a thickness of about 0.03 to 0.15 mm is attached to the back surface of the 5 mm plate 2 to form a back bonded plate 4.
Saw-tooth-shaped connecting portions 7 composed of peaks 5 and valleys 6 are formed at the edges of the base opening and the terminal end of the back pasting plate 4, and the peaks 5 of the connecting portions 7 of the front and back backing plates 4 are formed. And a valley 6 are fitted and connected to each other, and a long connection sheet 8 having a thickness of about 0.05 to 0.5 mm is bonded to the entire back surface of the reinforcing paper 3 of the connected backing plate 4. Since the connecting portions 7 of the front and back backing plates 4 and 4 are connected in a non-separable state, the following effects are exhibited.

The connecting portions 7 of the back-attached boards 4 and 4 are connected in an inseparable state by a connecting sheet 8 stuck to the entire surface of the back-attached boards 4 and 4, instead of a conventional tape-shaped connecting paper. Therefore, even if the surface of the base material 10 is covered, the connection portion 7 does not locally rise on the surface of the base material 10, and the surface of the base material 10 can be finished to a uniform plane. Therefore, unlike a conventional sheet for surface makeup, a modification process such as shaving and polishing is not required when affixing to the base material, and the surface makeup of the base material can be performed efficiently.

Further, since the reinforcing sheet 3 and the connection sheet 8 have an integrated structure on the entire back surface of the wood plate 2, the thickness of the surface decorative sheet 1 is as thin as 0.2 to 0.4 mm. However, it becomes a supple surface decorative sheet 1 having a sufficient tensile strength, and evenly adheres not only to the flat portion of the base material 10 but also to the corner portion, and the makeup coating work becomes easy.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the structure of a surface decorative sheet according to the present invention.

FIG. 2 is a plan view showing a form of a connecting portion of a back-sticking plate.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a plan view of a connecting portion of the surface decorative sheet of the present invention.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a cross-sectional view showing a state of attachment to a base material.

FIG. 7 is a cross-sectional view of a tape for connecting butting side edges of the wood plate.

FIG. 8 is a perspective view of a connection state of the butting side edges of the wood plate.

FIG. 9 is a plan view showing a form of a connection portion of a conventional backing plate.

FIG. 10 is a sectional view taken along line AA of FIG. 9;

FIG. 11 is a plan view of a connection portion of a conventional surface decorative sheet.

FIG. 12 is a sectional view taken along line AA of FIG. 11;

FIG. 13 is a cross-sectional view showing a state in which a conventional surface decorative sheet is bonded to a base material.

[Explanation of symbols]

 1. 1. Surface cosmetic sheet Wood board 3. 3. Reinforcement paper 4. Backing board 5. Connection peaks 6. Valley of connection Connection part 8. Connection sheet

Continued on the front page F term (reference) 2B002 AA01 AA04 BA01 BB06 DA02 DA04 DA05 DA06 2B250 AA01 AA02 AA06 AA13 BA03 CA11 DA04 EA02 EA13 FA21 FA28 FA31 GA03 4F100 AB10 AB33 AD00 AP00A AP01 AT00C BA03 BA07 BA10A BA10B DCB DCA JA20A JA20B JA20C JK14 YY00 YY00A YY00B YY00C

Claims (2)

[Claims] 1. A thickness of about 0.03 to 0.35 mm obtained by slicing columnar wood, and a thickness of about 0.03 to 0.3 mm on the back surface of a timber plate.
A 15 mm reinforcing paper is stuck to form a backing board, and a serrated connection consisting of peaks and valleys is formed at the edges of the base opening and the end of the backing board. The peaks and valleys of the connecting portions of the pasting plate are fitted and connected to each other, and the entire back surface of the reinforcing paper of the connected backing plate has a length of approximately 0.05 to 0.5 mm long. A surface decorative sheet characterized in that the connection sheets are bonded together and the connection portions of the front and rear backing plates are connected in an inseparable state. 2. The thickness of the surface decorative sheet is 0.15.
The surface decorative sheet according to claim 1, wherein the thickness is from 0.65 mm to 0.65 mm.