RU2520522C1 - 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, ammonium phosphate as a fire retardant, a layer of barrier paper, and an intermediate layer of a pressed wood composite material impregnated with xanthene dye Rhodamine S, placed between the layer of barrier paper and the impregnated paper layers, with the following content of components of said wood composite material, pts.wt: J. virginiana 'Kobold' juniper shavings 50-75; Pinus pumila pine needles 25-35. Other versions of fire retardants and ratios of components of the wood composite material are also disclosed.

EFFECT: wider range of materials for producing paper laminates and improved fire safety thereof.

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 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 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. virginiana 'Kobold' 50-75

pine needles Pinus pumila 25-35.

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

juniper sawdust J. virginiana 'Kobold' 80-90

pine needles Pinus pumila 50-70,

and also used hexabromocyclododecane as a flame retardant;

or

juniper sawdust J. virginiana 'Kobold' 50-75

pine needles Pinus pumila 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 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 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. virginiana 'Kobold' 50-75 80-90 50-75 pine needles Pinus pumila 25-35 50-70 50-75

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