JPS6110452A - Manufacture of decorative sheet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a decorative sheet that is highly flexible and has excellent physical and chemical performance, which can be produced by a relatively simple method. The cosmetic notebook produced by the method of the present invention is particularly suitable as a surface covering material for furniture and the like.

Conventional technology There is a strong demand for a makeup notebook that has both physical and chemical properties (hereinafter referred to as physical properties) and flexibility. This is important in that it makes it possible to have a curved surface on the part where the two sides touch each other, rather than simply raising it at a right angle. However, since physical properties and flexibility are contradictory, it is necessary to find a compromise by sacrificing one of the properties or reducing both properties, such as (a) listed below.
All previous attempts at ~(c) have been unsatisfactory.

(A) 55~] 00 g/m2 titanium paper impregnated with about 50 g/m2 of realyl phthalate resin (so-called rlAr' resin), dried, and separately impregnated with diallyl phthalate resin. 3-impregnated paper for backer (lining material). Heating and heating [1; In this method (a), it is complicated to supply both the resin-impregnated titanium paper and the backer impregnated paper to the heating and pressurizing equipment in the heating and pressurizing process. Since titanium paper is used, it is difficult to perform precise printing due to the roughness of the surface of the titanium paper.

(b) Hard vinyl chloride resin is used as the base material, and the material is printed and covered with a transparent film of the same quality. Since the surface of this (b) is made of thermoplastic resin, the physical properties of the surface are insufficient, and the i'+J Q!
The oozing and bleeding of mark 1 is unavoidable, and the adhesion to the mat to which this (b) is attached is also insufficient.

() → Titanium paper weighing 80 to 140 g/m2 is impregnated with about 30 to 60 g/m of melamine formaldehyde condensation resin, dried, and then layered with backer impregnated paper made by impregnating kraft base paper with phenol resin, heated and pressurized. It is a unified thing. This (c) has the same drawbacks as (a) and is even worse in terms of flexibility than (a).

Therefore, the present invention solves the drawbacks of the above-mentioned prior art.
l'l t-1 A method for producing and hanging a cosmetic notebook in a simple one-step process with a precise printed pattern, sufficient material f1, and flexibility is provided.

In the present invention, after applying a printing pattern to thin paper, a curable synthetic resin is coated or impregnated to make impregnated Japanese paper (i.e.
On the other hand, as a backer, impregnated paper is impregnated with curable synthetic resin or synthetic rubber latex, and impregnated decorative paper and impregnated paper are bonded and laminated, and then heated and pressurized. , a decorative sheet is obtained which eliminates the drawbacks of the above-mentioned prior art.

Thin paper used to form printed pattern paper includes printing paper for building materials, pure white paper,
Alternatively, thin paper (so-called reinforced printed paper) or the like is used, which is mixed with a synthetic resin to strengthen the interlaminar strength.

The printed pattern formed on the thin paper has a suitable pattern depending on the field in which the makeup notebook is used, such as gravure printing, gravure offset printing, lithographic offset printing, dilitho printing, letterpress printing, intaglio printing, and jet printing. Print.

Appropriately formed using silk screen printing or electrostatic printing.

The printed patterned paper thus formed is then coated or impregnated with a curable synthetic resin to produce impregnated decorative paper. Curable synthetic resins include amino alkyd resins and unsaturated polyester resins.

Diaryl phthalate resin, Epoquine resin, phenol resin, urethane resin, melamine resin, or a mixed resin of two or more of these resins are used, and among them, acrylic urethane resin and polyurethane resin are most preferably applied. In addition, as a solvent for coating or impregnating this curable synthetic resin, any mixed solvent such as ethyl acetate, MEK, ) luene, etc. is used, and the curable synthetic resin is
Generally, it is coated or impregnated in an amount of about 2 to 30 mm/m (dry), preferably 3 to 107 mm/m (dry).

When applying a curable synthetic resin to thin paper to form a decorative layer, for example, natural roll coating method, reverse roll coating method, clavier coating method, bar code method, spray coating method, Metsuy Roll Two 14. Flow coat method.

Other appropriate coating methods such as a knife coating method, a screen coating method, a bottom coating method, and the like may be used.

On the other hand, in the present invention, impregnated paper for backer use (for lining) is produced by impregnating it with curable synthetic resin or synthetic rubber latex.

As the base paper for the backer, a paper having a basis weight of about 80 to 4009 g/m', preferably about 200 to 350 g/m' is used.

Curable synthetic resins impregnated into the backer paper include unsaturated polyester resins, diallyl phthalate resins, epoxy resins, and phenolic resins.

Urethane resins, melamine resins, mixed resins of these resins, and synthetic rubber latexes such as 5Rr (, C, RlR, NJ, NBR, etc.) are used. The impregnation rate (chi) of the two or more mixed resins drawn out according to the calculation formula is 20.~5
Impregnate to approximately 0.

The above-mentioned impregnated paper and impregnated paper for backer are easier to handle in subsequent steps if they are impregnated or coated with a resin and then air-dried or hot-air-dried as needed to make them appear dry. However, since the impregnated resin etc. will be cured by applying tJO heat and pressure in the post-process, there is no need to heat it to the point of curing, and it may be in an uncured state of semi-cured or less.

The impregnated decorative paper and the impregnated paper for the backer are stacked so that the printed pattern surface is visible from the outside, and are bonded and laminated with an adhesive to form a laminate.

The adhesive used at this time is preferably an adhesive made of polyurethane resin, urea resin, melamine resin, or polyvinyl acetate resin, and the roll temperature is 70 to 150.
A dry lamination method or a wet lamination method at a temperature of about 0°C can be used.

-Written in writing? 1) The twisted laminate is then heated and pressurized.

The lower stage of heating and pressurization is a flat plate press, especially a Higashine press, a multi-stage press that can press a large number of W laminates at once, and a roll press.

Alternatively, an endless press may be used, and the heating temperature is 80-190°C5, preferably 100-140°C.
0°C, the pressure for pressurization is 3 to 120'vJ, preferably 10 to 70'vJ, and the time for heating and pressurizing is 1 to 30 minutes, preferably 2 to 10 minutes.

Function In the present invention, since the printed pattern is provided on the thin rainbow paper, the surface 'I'-fr properties of the thin paper are superior to the surface smoothness of the titanium paper. Good metastasis.

In addition, in the present invention, since the impregnated decorative paper and the impregnated paper for the backer are bonded and laminated in advance, the impregnated decorative paper and the impregnated paper for the backer are bonded together during heating and pressurization in the next step. No bulges will occur in between.

Furthermore, in the present invention, since the laminate is heated and pressurized,
As the impregnated decorative paper and the resin and adhesive in the impregnated paper harden, each resin and adhesive become integrated at the interface, and the adhesion between each layer becomes strong.

Effects of the Invention According to the method of the present invention, the printed pattern is precise, the physical properties are sufficient, and the entire material is flexible, making it suitable for use on curved surfaces such as furniture. You can get makeup tips.

Claims (2)

[Claims] (1) A printed pattern is applied to thin paper with a basis weight of 10 to 50 g/m^2 to form a printed pattern paper, and then a curable synthetic resin is applied or impregnated to the obtained printed pattern paper to form an impregnated decorative paper. On the other hand, impregnated paper is produced by impregnating paper having a basis weight of 80 to 400 g/^2 with curable synthetic resin or synthetic rubber latex, and the impregnated decorative paper and impregnated paper obtained in the above manner are A method for producing a decorative sheet, which comprises laminating the two by bonding them together using an adhesive, and then heating and pressurizing the resulting laminate. (2) A patent claim characterized in that the heating temperature is 80 to 190°C, the pressurizing pressure is 3 to 120 kg/cm^2, and the heating and pressurizing time is 1 to 30 minutes. A method for producing a decorative sheet according to scope item (1).