SU994301A1 - Method of producing lined articles of wooden mouldable mass - Google Patents

Description

(3) METHOD OF MANUFACTURING FACILITATED PRODUCTS FROM WOOD PRESS MASS The invention relates to methods for producing veneered products. And can be used in the wood-processing industry. A known method for manufacturing lined articles from a woody press mass includes forming a bag of woody press mass and paper impregnated with a solution based on a thermosetting resin, followed by pressing 1. The disadvantage of the method is the poor quality of the curved surface facing. A known method of making veneered wood products. . press mass, including the formation of a package of wood press mass and paper impregnated with a solution based on a thermosetting resin and oleic acid, followed by pressing C2 3. Thac; the method does not provide a qualitative lining of the curved surface, since oleic acid does not mix with the water solution of the resin, depositing drops on the surface of the lining layer and forming a patchy surface. In addition, in this method, the olein slot is inserted into the promexual paper layer located between the press mass and the front layer of paper, which does not improve the anti-adhesion properties of the facing material. The purpose of the invention is to improve the quality of the surface of the coated products and impart anti-adhesive properties to them by uniformly distributing oleic acid in solution. The goal is achieved by the fact that the proposed solution additionally introduces the surfactant linozolin 7-9 in an amount of 0.5-1.0 wt.%. The impregnating composition for the facing layer is prepared as follows.

With continuous stirring, an oleic acid and a surfactant linosolin 7–9 are added to the impregnating solution of a resin of the MMPT brand according to TU 13 USSR 2-78. The wood press material consists of BB% chips and 12% of the binder (KF-MT-P carbamide-formaldehyde resin.) The co-solution is impregnated with Fo on the molds.

Tav impregnating composition is listed in the table. To impregnate texture paper with a density of 150 g / m on THE 81-OA-501 -77.

S This wood-adhesive composition with a cladding layer is used to form boxes of 12SOx mm.

Table 1 of the facing layer Component Urea-melamine-formaldehyde resin MMPP98,597,7597 Oleic acid 11.5 2.0 Linosoline 7-9 0.5 0.7 0.7 1.0, the detailing takes 0.5 min / mm. The average density of the material modes: the pressure of the press-30 rial of parts is 1000 kg / m. 6 MPa, press temperature; Test results; pre-CPZ; press time — set forth in Table 2. The results of testing the molded parts for strength under static bending. Coley-DensityTopic strength with static. material, MPa image-kg / m - zoA Example T - T --- T Proto-123 type. I ““ Zhk Wi “. 20100041,, 6,2k6,0 Quantitative composition,% Example iZIIZQ T a b i c a 2 we. These properties are presented in table. 2. The force of separation of the product from the mold.

99 "301"

LablitsZ

25,

Claims (2)

20 Thus, the proposed method of manufacturing products provides a better curvilinear surface without spots and irregularities caused by sticking the product to the surface of the mold, the invention The method of manufacturing veneered products from a wood press mass, the formation of a package mass and paper impregnated with a solution based on a thermosetting resin and oleic acid, followed by pressing. 0.58 0.90 0.32 characterized in that, in order to improve the quality of the surface of the lined products and impart anti-adhesive properties to them by uniformly distributing oleic acid in the solution, the surfactant linoselin is additionally introduced in the amount of 0.5-9 masl Sources of information taken into account in the examination 1. USSR author's certificate number, cl. B 29 J 5/00, 19b8. 2. USSR author's certificate №571385, cl. In 29 J 5/00, 1976 (prototype). .