RU2519819C1 - Paper laminate (versions) - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: paper laminate includes a pressed stack of sheet layers of kraft paper impregnated with MMFP resin, at least one layer of barrier paper - underlay and at least one intermediate layer of a pressed wood composite material impregnated with xanthene dye Rhodamine S, placed between said underlay and the impregnated paper layers, with the following content of components of said wood composite material, pts.wt: J.h. 'Wiltonii' juniper shavings 50-75; Pinus leucodermis pine needles 25-35. Other versions of ratios of components of the wood composite material are also disclosed.

EFFECT: wider range of materials for producing paper laminates.

3 cl, 1 tbl

Description

The invention relates to the chemical industry, and more specifically to the production of plastics, in particular paper-laminated plastics (BSP), and can be used mainly as structural and finishing polymer materials, for example, in the manufacture of furniture, finishing polymer panels for various purposes, and in other industries.

Known decorative paper-laminated plastic containing an extruded package of sheets of paper (kraft paper) impregnated with synthetic resins, located between the decorative layer and the paper layer of bleached or unbleached pulp without preliminary impregnation with resins, the weight of 1 m ² which is in the range from 15 to 60 g (patent PM RU 33061 U1, 10.10.2003, B32B 23/06).

The technical result of the invention is the expansion of the arsenal of funds in the production of BSP.

The specified technical result is achieved due to the fact that the paper-laminate includes a pressed-in package of sheet layers of kraft paper impregnated with MMFP resin, at least one layer of barrier paper and at least one Rhodamine C impregnated with xanthene dye located between it and the paper layers the intermediate layer of pressed wood composite material with the following content of components in it, parts by weight:

juniper sawdust J.h. 'Wiltonii' 50-75 pine needles Pinus leucodermis 25-35

In another embodiment, the mass ratios are changed (selected). parts for sawdust and needles:

juniper sawdust J.h. 'Wiltonii' 80-90 pine needles Pinus leucodermis 50-70

or

juniper sawdust J.h. 'Wiltonii' 50-75 pine needles Pinus leucodermis 50-75

BSP consists of sheets (package) of kraft paper, which are impregnated in bathtubs or automatic impregnation machines with synthetic resin, in particular MMFP. As options, resin MFPS-2 or PMF can be chosen as the resin (PMF is recommended for the manufacture of synthetic sheet veneer in installations with high temperature conditions)

A protective layer of barrier paper, an underlay, is placed on top of a package of kraft paper sheets. As a barrier paper, bag paper (base) is used, on which a two-layer barrier coating is applied - a barrier lacquer. Various types of sack paper can be used as a base, but it is preferable to use “stretchable” kraft paper.

Between the protective layer and the impregnated layers of paper there is one (the number of layers can be from one to five, depending on the purpose of the BSP), an intermediate layer of pressed wood composite material impregnated with xanthene dye Rhodamine C (alternatively, Rhodamine G or B can be used as a dye) , with the following content of components in it, parts by weight, shown in the table.

one 2 3 Juniper Sawdust J.h. 'Wiltonii' 50-75 80-90 50-75 Pine needles Pinus leucodermis 25-35 50-70 50-75

After the impregnation of the layers, the layers are dried, followed by cutting and assembling the bag, after which the pressing or molding of complex products begins, followed by heat treatment with hot air (140 ° C - 180 ° C) at a continuous pressure provided by the clamping shafts (4-10 MPa), or infrared rays, followed by processing the back side on the roughing machines using an endless abrasive tape.

Claims (3)

1. Laminated paper, characterized in that it includes a pressed-in package of sheet layers of kraft paper impregnated with an MMFP resin, at least one layer of barrier paper and at least one intermediate layer impregnated with xanthene dye Rhodamine C interposed between it and the paper layers pressed wood composite material with the following content of components in it, parts by weight:
Juniper Sawdust Jh 'Wiltonii' 50-75 Pine needles Pinus leucodermis 25-35 2. Laminated paper, characterized in that it includes a pressed-in package of sheet layers of kraft paper impregnated with MMFP resin, at least one layer of barrier paper and at least one intermediate layer impregnated with xanthene dye Rhodamine C interposed between it and the paper layers pressed wood composite material with the following content of components in it, parts by weight:
Juniper Sawdust Jh 'Wiltonii' 80-90 Pine needles Pinus leucodermis 50-70 3. Laminated paper, characterized in that it includes a pressed-in package of sheet layers of kraft paper impregnated with MMFP resin, at least one layer of barrier paper and at least one intermediate layer impregnated with xanthene dye Rhodamine C interposed between it and the paper layers pressed wood composite material with the following content of components in it, parts by weight:
Juniper Sawdust Jh 'Wiltonii' 50-75 Pine needles Pinus leucodermis 50-75