RU2520529C1 - 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, zinc borate solution as a smoke suppressant, at least one layer of barrier paper, and at least one 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: Juniperus virginiana 'Glauca' juniper shavings 50-75; Pinus nigra 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 and low smoke emission in case of fire.

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, 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 reduced smoke emission in case of combustion.

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 an MMFP resin, a solution of zinc borate as a smoke suppressor, at least one layer of barrier paper and at least one layer of barrier paper between it and the impregnated paper layers 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 Juniperus virginiana 'Glauca' 50-75;

pine needles Pinus nigra 25-35.

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

juniper sawdust Juniperus virginiana 'Glauca' 80-90;

pine needles of Pinus nigra 50-70,

or

juniper sawdust Juniperus virginiana 'Glauca' 50-75;

pine needles Pinus nigra 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 (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 bag is impregnated with a smoke suppressor - zinc borate solution

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 J can be used as a dye or C), at the following content of components in it, parts by weight, shown in the table.

Components one 2 3 Juniper sawdust Juniperus virginiana 'Glauca' 50-75 80-90 50-75 pine needles Pinus nigra 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 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 MMFP resin, a solution of zinc borate as a smoke suppressor, 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, mass. hours:
Juniper sawdust Juniperus virginiana 'Glauca' 50-75 pine needles Pinus nigra 25-35 2. Laminated paper, characterized in that it includes a pressed-in package of sheet layers of kraft paper impregnated with MMFP resin, a solution of zinc borate as a smoke suppressor, 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, mass. hours:
Juniper sawdust Juniperus virginiana 'Glauca' 80-90 pine needles Pinus nigra 0-70 3. Laminated paper, characterized in that it includes a pressed-in package of sheet layers of kraft paper impregnated with MMFP resin, a solution of zinc borate as a smoke suppressor, 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, mass. hours:
Juniper sawdust Juniperus virginiana 'Glauca' 50-75 pine needles Pinus nigra 50-75