SU1106687A1 - Lamellar decorative material - Google Patents

Abstract

LAYERED DECORATIVE MATERIAL, including amino-formaldehyde resin, and Kraft paper impregnated with phenol-formaldehyde resin, characterized in that, in order to improve the physical and mechanical properties, fire resistance of the material and recycling of the impregnated paper, it is made in the form of successively alternating layers of decorative paper and paper, and the paper of the paper and paper of the paper. impregnated with these resins with a Kraft content of volatiles in impregnated paper of 1-5 wt.% o / o.

Description

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00 The invention relates to the manufacture of decorative building materials and can be used in the manufacture of finishing works in various fields of construction equipment. Decorative paper laminate is known, which is a sheet material obtained in storey presses by hot pressing of paper impregnated with a binder. Melamine and urea-formaldehyde resins and their modifications are used as binders for impregnating the face layers of decorative paper-laminate plastic, and phenol formaldehyde resins 1 are used for impregnating the inner layers. The disadvantage of the material is the complicated technology of its manufacture. The closest to the invention to the technical essence and the achieved result is a decorative paper laminate (DBSP) made from decorative paper sheets decor impregnated with melamine formaldehyde resin and Kraft paper sheets impregnated with phenol formaldehyde resin, which are pressed at 144-148 ° C and pressure of 100 kg / cm2. Known plastic has a satisfactory adaptability. However, its physical and mechanical properties and fire resistance are not high enough. To obtain high-quality plastics, the content of volatiles in Kraft paper should be 6-8 May. % Paper with a lower volatile content is defective and must be destroyed (incinerated). In addition, impregnated decorative paper with a normal content of volatile, but having a violation of geometric dimensions, pattern, waviness, is also a marriage and is subject to destruction (burning). The purpose of the invention is to increase the physicomechanical properties, the fire resistance of the material and the disposal of waste paper impregnated. The goal is achieved in that layered decorative material, including sheets of decorative paper impregnated with amino-formaldehyde resin, and sheets of Kraft paper impregnated with phenol-formaldehyde resin, is made in the form of successively alternating layers of decorative paper and Kraft paper impregnated with these resins when the content of volatile impregnated kraft paper May 1-5 % In the manufacture of the proposed decorative laminate, waste of impregnated paper is used with the following characteristics: decorative paper - for light and dark wood and. light colored tones (“marble,“ freezing, “matting, etc.); weight I m 90-135 g; the content of fillers is controlled by the ash content, which for these papers ranges from 6 to the capillary absorption of water in 5 minutes at least 27 mm; the content of volatiles in the impregnated paper is 3.6-7.0 wt .; Kraft paper has a weight of 145-162 air permeability of 100-300 cm in 511 / 15-35 s; capillary water absorption in the longitudinal direction is 30-40 mm, the content of volatiles in the impregnated paper is 1–5 May. / 0. Example 1. A press bag for laminating a decorative laminate is assembled in the following sequence: transport sheet; leaf decor on the front layer; Kraft paper; decor sheet; Kraft sheet; decor sheet; Kraft sheet; decor sheet; Kraft sheet; separation sheet. The content of volatile paper craft 1 May. %; The bag is pressed at 140 ° C and a pressure of 80 kg / cm with a holding time at a pressing temperature of 20 minutes. Example 2. A bag for pressing a laminated decorative material is assembled as in Example 1. The content of volatiles in Kraft paper is 3 May. % The bag is pressed at 140 ° C and a pressure of 100 kg / cm with an exposure at a pressing temperature of 20 minutes. Example 3. A bag for pressing a layered decorative material is assembled as in Example 1. Content of volatiles In Kraft paper 5 May. % The bag is pressed at 44 ° C and a pressure of 100 kg / cm with an exposure at a pressing temperature of 20 minutes. Comparative properties of the proposed and known materials are given in the table. As can be seen from the table, the proposed material has improved physical and mechanical properties. Flammability tests of this material according to the fire tube method (GOST 19088-71) have shown that the mass loss is 10-19% for a known material. According to the VIAM technique (OST 190094-73), the self-smoldering time of a known laminated decorative material is 30 s. whereas the proposed material does not itself smolder and does not burn. The high fire resistance of the proposed material greatly expands the scope of its application (for example, in ship-, aircraft and car building) without increasing the cost of its production and greatly complicating the technology for its production. The proposed material makes it possible to utilize 80-90 / o of waste paper impregnated, while the known material is made entirely from certified raw materials.

Resistance to boiling,%, not more than Destructive stress during bending, kg / cm, 1200 2300 not less

Impact strength of the surface, imprint, mm

4.5 4.0

3.5 GOST

9590-76

GOST 9590-76 2500 3100 GOST 4648-71

Claims (1)

LAYERED DECORATIVE MATERIAL, including aminoformaldehyde resin, and kraft paper sheets impregnated with phenol-formaldehyde resin, characterized in that, in order to increase the physicomechanical properties, fire resistance of the material and utilize waste paper impregnated, it is made in the form of successively alternating layers of decorative paper and kraft paper impregnated with said resins with a content of volatile in impregnated paper Kraft 1-5 wt.%.