RU2516562C1 - 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: Juniperus sabina 'Erecta' juniper shavings - 50-75, Pinus nigra pine needles - 25-35.

EFFECT: wider range of materials for producing paper laminate.

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 also 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, weight 1 m ² , which is in the range of 15 up 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 xanthene dye impregnated between it and the paper layers Rhodamine With an intermediate layer of pressed wood composite material with the following content of components in it, parts by weight:

Juniper sawdust Juniperus sabina 'Erecta' 50-75

pine needles Pinus nigra 25-35.

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

Juniper sawdust Juniperus sabina 'Erecta' 80-90

pine needles Pinus nigra 50-70.

or

Juniper sawdust Juniperus sabina 'Erecta' 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. 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.

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), with the following content of components in it, parts by weight, shown in the table.

one 2 3 Juniper Sawdust Juniperus sabina 'Erecta' 50-75 80-90 50-75 Pine needles Pinus nigra 25-35 50-70 50-75

After the layers are impregnated, the layer is dried, followed by cutting and assembling the bag, after which the pressing or molding of products with complex configurations 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, with subsequent processing of 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, at least one layer of barrier paper and located between it and the impregnated paper layers, at least one xanthene dyed Rhodamine C the intermediate layer of pressed wood composite material with the following content of components in it, parts by weight:
juniper sawdust Juniperus sabina 'Erecta' 50-75 pine needles Pinus nigra 25-35. 2. Laminated paper, characterized in that it comprises a pressed-in package of sheet layers of kraft paper impregnated with MMFP resin, at least one layer of barrier paper and located between it and the impregnated paper layers, at least one xanthene dye Rhodamine C the intermediate layer of pressed wood composite material with the following content of components in it, parts by weight:
juniper sawdust Juniperus sabina 'Erecta' 80-90 pine needles Pinus nigra 50-70. 3. Laminated paper, characterized in that it comprises a pressed-in package of sheet layers of kraft paper impregnated with an MMFP resin, at least one layer of barrier paper and located between it and the impregnated paper layers, at least one xanthene dye Rhodamine C the intermediate layer of pressed wood composite material with the following content of components in it, parts by weight:
juniper sawdust Juniperus sabina 'Erecta' 50-75 pine needles Pinus nigra 50-75.