RU2518571C1 - Paper-layered plastic (versions) - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: paper-layered plastic includes pressed pack of sheet craft-paper layers, soaked with urea-melaminoformaldehyde resin UMFR, ammonium phosphate as antipyrene, at least, one layer of barrier paper and placed between it and soaked paper layers, at least, one soaked with xanthene dye Rhodamine C intermediate layer of pressed wood composite material, containing sawdust of juniper J. squamata 'Blue Star' and needles of pine Pinus mugo in the following wt.p.: sawdust of juniper J. squamata 'Blue Star' 50-75 and needles of pine Pinus mugo 25-35. Quantity of sawdust of juniper J. squamata 'Blue Star' in second and third versions of paper-layered plastic constitutes in wt.p.respectively 80-90 and 50-75, and quantity of needles of pine Pinus mugo in second and third versions of paper-layered plastic constitutes in wt.p. respectively 50-70 and 50-75.

EFFECT: extension of arsenal of means in production of paper-layered plastics, increase of its fire safety.

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 decorative polymer materials, for example, in the manufacture of furniture, decorative polymer panels for various purposes, as well as 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 means in the production of BSP, as well as increasing its fire safety.

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

juniper sawdust J. squamata 'Blue Star' 50-75

pine needles Pinus mugo 25-35.

In another embodiment, changed (selected) the ratio of wt. parts for sawdust and needles:

juniper sawdust J. squamata 'Blue Star' 80-90

pine needles of Pinus mugo 50-70,

and also used hexabromocyclododecane as a flame retardant;

or

juniper sawdust J. squamata 'Blue Star' 50-75

pine needles of Pinus mugo 50-75,

and aluminum hydroxide was used as a flame retardant.

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, MFP-2 or PMF resin can be chosen as the resin (PMF is recommended for the manufacture of synthetic sheet veneer in plants 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.

In addition, the package is impregnated with a flame retardant composition, which can be used aluminum hydroxide, hexabromocyclododecane or ammonium phosphate.

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.

Table one 2 3 juniper sawdust J. squamata 'Blue Star' 50-75 80-90 50-75 pine needles Pinus mugo 25-35 50-70 50-75

After the layers are impregnated, the layers are dried, followed by cutting and assembling the bag, after which the pressing or molding of products of complex configuration 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 comprises a pressed-in package of sheet layers of kraft paper impregnated with an MMFP resin, ammonium phosphate as a flame retardant, at least one layer of barrier paper and located between it and the impregnated layers of paper, at least , one impregnated with xanthene dye Rhodamine With an intermediate layer of pressed wood composite material with the following content of components in it, parts by weight:
juniper sawdust J. squamata 'Blue Star' 50-75
pine needles Pinus mugo 25-35. 2. Laminated paper, characterized in that it includes a pressed-in package of sheet layers of kraft paper impregnated with an MMFP resin, hexabromocyclododecane as a flame retardant, at least one layer of barrier paper and located between it and the impregnated layers of paper, at least one rhodamine C impregnated with xanthan dye, an intermediate layer of pressed wood composite material with the following content of components in it, parts by weight:
juniper sawdust J. squamata 'Blue Star' 80-90
pine needles of Pinus mugo 50-70. 3. Laminated paper, characterized in that it comprises a pressed-in package of sheet layers of kraft paper impregnated with MMFP resin, aluminum hydroxide as a fire retardant, at least one layer of barrier paper and located between it and the impregnated layers of paper, at least , one impregnated with xanthene dye Rhodamine With an intermediate layer of pressed wood composite material with the following content of components in it, parts by weight:
juniper sawdust J. squamata 'Blue Star' 50-75
pine needles Pinus mugo 50-75.