RU2519468C1 - Paper-layered plastic (versions) - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: paper-layered plastic includes pressed pack of sheet craft-paper layers, soaked with resin UMFR, ammonium phosphate as antipyrene. It also includes, 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. Wood composite material contains the following components, wt.p.: sawdust of juniper Juniperus chinensis 'Kaizuka' - 50-75; needles of pine Pinus koraiensis - 25-35. Invention also describes versions of plastic, which contain other antipyrenes (aluminium hydroxide, hexabromocyclododecane), as well as other ratios of components of wood composite material.

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 finishing polymer materials, for example in the manufacture of furniture, finishing 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, B32B 23/06, 10/10/2003).

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 laminated paper includes a pressed 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 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 Juniperus chinensis 'Kaizuka' 50-75;

pine needles of Pinus koraiensis 25-35.

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

Juniper sawdust Juniperus chinensis 'Kaizuka' 80-90;

pine needles Pinus koraiensis 50-70,

and also used hexabromocyclododecane as a flame retardant;

or

Juniper sawdust Juniperus chinensis 'Kaizuka' 50-75;

pine needles Pinus koraiensis 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 (urea-melamine-formaldehyde impregnating resin). 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 the xanthene dye Rhodamine C (alternatively, Rhodamine G or B can be used as a dye ), at the following content of components in it, parts by weight, given in the table.

Component one 2 3 Juniper Sawdust Juniperus chinensis 'Kaizuka' 50-75 80-90 50-75 Pine needles Pinus koraiensis 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 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 at least one impregnated paper located between it and the impregnated layers of paper 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 Juniperus chinensis 'Kaizuka' 50-75 pine needles Pinus koraiensis 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 at least one xanten-impregnated paper located between it and the impregnated paper layers dye Rhodamine With an intermediate layer of pressed wood composite material with the following content of components in it, parts by weight:
Juniper sawdust Juniperus chinensis 'Kaizuka' 80-90 pine needles Pinus koraiensis 50-70 3. Laminated paper, characterized in that it includes 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 at least one impregnated paper between it and the impregnated paper layers 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 Juniperus chinensis 'Kaizuka' 50-75 pine needles Pinus koraiensis 50-75