JP2002337302A - Wallpaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide wallpaper having good application properties. SOLUTION: In the wallpaper, a low melting point polyolefin is located at the center, and laminates held between thin paper sheets are arranged on both sides of the polyolefin. The wallpaper is flexible and excellent in peelability and has good application properties.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to wallpaper having good workability.

[0002]

2. Description of the Related Art In a wallpaper manufacturing process, after embossing is applied to a front cover, the front cover and the backing paper are laminated using an emulsion adhesive. At this time, if the moisture of the emulsion adhesive adheres to the cover, there is a problem that the emboss is crushed. In addition, when a starch-based adhesive was used during construction, the emboss further collapsed, and the design was impaired.

The wallpaper was embossed to the backing material, and the dimensional stability and shape stability were lost.

[0004] The wallpaper of JP-A-11-241299 has a hard surface, and the water content of the adhesive is not applied to the wallpaper.
It was difficult to construct. Also, when embossing the wallpaper, sharp embossing could not be obtained because there was no layer like the PO sand paper of the present application.

[0005]

SUMMARY OF THE INVENTION The present invention provides a wallpaper having high embossability and high workability.

[0006]

According to the present invention, there is provided a wallpaper having a laminate of upper and lower thin papers with a low-melting polyolefin interposed therebetween at the center thereof, and decorative paper is provided on the surface of the laminate. Or a backing paper on the back side of the laminate.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The basic laminate of the present invention is a laminate in which a thin paper upper layer is laminated above and below a low-melting polyolefin resin (PO) layer. The low melting point PO is a PO having a melting point of 180 ° C. or less, such as polyethylene (PE), polypropylene (PP), ethylene-vinyl acetate copolymer (E
VA) and the like, and the melting point is preferably from 160 to 180 ° C. The thickness of the PO layer is preferably from 15 to 30 μm. If the thickness greatly exceeds this, flexibility is lost and the construction is disadvantageous. Thin paper-like bodies are laminated on and under the polyolefin resin layer. This thin paper is preferably so-called thin paper and crepe paper. The thickness of thin paper is preferably 30 to 60 μm, and the thickness of crepe paper is preferably 200 to 300 μm. The above laminate is called PO sand paper, and when PO is PE, it is called PE sand paper. In the present invention, the PO sand paper has high flexibility, hardly generates wrinkles, and has low water absorption.

FIG. 1 is a cross-sectional view of the wallpaper of the present invention. Through PO2, thin paper 1 is laminated on the upper part and crepe paper 3 is laminated on the lower part, and PO sand paper 4 is obtained. The backing paper 6 is formed under the crepe paper of the PO sand paper via the non-water-permeable adhesive 5 such as acrylic. The thin paper 1 of PO sand paper shows the surface decorative paper of the entire wallpaper 7. In the wallpaper shown in FIG. 1, the front paper is thin paper, and the PO layer is directly under the thin paper.
Extremely sharp embossing can be obtained compared to hot embossing.

In the present invention, since the moisture of the adhesive does not penetrate into the surface layer (inside) between the PO layer and the water-impermeable adhesive, the emboss retention is good, and the thin paper is soft and has a fold-resistant property. Excellent. In addition, it has good dimensional stability, excellent blister resistance, good workability, good phase breakability, and good peel-up.

FIG. 2 is a sectional view of another wallpaper according to the present invention.
Via O2, crepe paper 3 at the top and thin paper 1 at the bottom
Are laminated to obtain a PO sand paper 4. Surface decorative paper 8 is formed on PO sand paper via an EVA-based adhesive.
The lowermost thin paper 1 also serves as a backing paper for the entire wallpaper. For this reason, since the PO layer is close to the backing paper, moisture does not permeate and the peel-up property is excellent.

[0011] The wallpaper of the present application also has a PO layer immediately above the thin paper 1 of the backing paper, so that even when applied with an adhesive, too much moisture does not permeate to the upper side, so too much moisture is given to the upper part of the wallpaper. No dimensional stability was obtained. In addition, the workability was good with only a modest degree. The thickness of the PO sand paper obtained by laminating the upper and lower thin papers and PO obtained above is preferably 0.2 to 0.25 mm, and the total thickness of the wallpaper of the present invention is preferably 0.3 to 0.8 mm.

The wallpaper of the present invention has good dimensional stability, has no joints, and can obtain the most preferable shrinkage elongation of about 1%. It also has excellent adhesion between the surface layer and the back surface.

[0013]

【Example】

Example 1 laminate thin paper 15 g / m ² crepe paper 50 g / m ² laminated with polyethylene 15μ thick · 5g / m ² (P
E sandpaper) was prepared. After a printing pattern is applied to the thin paper of the PE sand paper, embossing is applied, and thereafter, a 46 g / m ² backing paper is laminated with a water-impermeable adhesive, and an acrylic surface treatment is performed to obtain a total thickness of 0.1 g / m ² . A 55 mm wallpaper of the present invention was obtained.

[0014]

Example 2 PE sand paper was turned upside down, and 100 g / m ² surface decorative paper was laminated with an EVA resin on it.
Using thin paper of PE sand paper as a backing paper, an acrylic resin surface treatment was performed to obtain a wallpaper having a total thickness of 0.66 mm.

[0015]

Comparative Example As a comparative example, kenaf paper of 100 g / m ² and
A backing paper of 46 g / m ² was laminated in an EVA system to obtain an acrylic surface-treated wallpaper having a total thickness of 0.56 mm. The results are shown in "Table 1".

[0016]

[Table 1] The first to fifth grades indicate that the larger the numerical value, the better. ：: Excellent △: Average ×: Poor

From Table 1, it can be seen from Examples 1 and 2 that the wallpaper effect of Examples 1 and 2 is good in emboss retention, free of joint gaps, excellent in swelling, board swelling, swelling elongation, no blistering and peeling. A wallpaper having excellent up- and wrinkle resistance was obtained.

On the other hand, in the comparative example, the emboss retention property, joint squealing, phase breakability, and board phase breakage were inferior to those of the present wallpaper.

Phase peeling Measured by the time until the removability of the adhesive once applied to the wallpaper is removed. Elongation Elongation (%) was measured by infiltrating the adhesive into the wallpaper. Fold wrinkle resistance The result was observed by applying a load of 2 kg for 30 minutes.

[0020]

According to the present invention, the emboss of the wallpaper is not damaged. There were no joints. The phase separation was good. The sea condition was good. Peel-up properties were good. The fold wrinkle resistance was good. Blistering resistance was obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view of the present invention.

FIG. 2 is a sectional view of the present invention.

[Explanation of symbols]

 Reference Signs List 1 thin paper 2 PO 3 crepe paper 4 PO sand paper 7, 10

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4F100 AK03B AR00D BA03 BA04 BA05 BA06 BA07 BA10A BA10C BA10D BA10E CB00 DG10A DG10C DG10D DG10E EC18 EJ39 GB08 HB00E HB31 JL01 4L055 AJ01 AJ14 AJ30

Claims (6)

[Claims] 1. A wallpaper having a laminate of upper and lower thin papers with a low-melting polyolefin interposed therebetween at the center. 2. The wallpaper of claim 1 having a backing paper under the laminate. 3. The wall material according to claim 1, which has decorative paper on the surface of the laminate. 4. The wallpaper according to claim 1, wherein the thin paper is thin paper or crepe paper. 5. A wallpaper characterized in that a backing paper is formed under a laminate with a low melting point polyolefin interposed at the center between an upper thin paper as a surface decorative paper and a lower crepe paper. 6. A wallpaper characterized in that a laminate having a low-melting polyolefin interposed therebetween is formed in the center of an upper crepe paper and a lower thin paper under surface decorative paper, and the thin paper is used as a backing paper.