SU1247277A1 - Wood laminate - Google Patents

Description

one

The invention relates to the woodworking industry, mainly to the production of laminated plastics.

The purpose of the invention is to reduce the consumption of veneer without reducing the strength of the plastic.

FIG. Figure 1 shows a diagram of the structure of wood sheet plastic with the veneer in the outer layers in the mutually perpendicular direction; in fig. 2 - the same, with a parallel arrangement of fibers in adjacent layers and with an inner layer of wood pressing mass.

Wood plastic has two layers: external 1 and internal 2.

1247277

2

Given in Table. 2, the data of physicomechanical tests show that the specified strength characteristics of the composite plastic can be provided by changing the number of 5 sheets of veneer in the outer layers, respectively, i.e., the fraction of the outer layer of the peeled veneer sheets, respectively.

The strength characteristics of a composite plastic consisting of 6 sheets of spike in the outer layers (option II) are 10 at the level of the strength characteristics of the known DSP-B plastic sheet with a thickness of 10 mm. When the veneer is placed in parallel direction in adjacent layers (option IV), the strength characteristics of the combined plastic are significant. 1. The results are presented that are 15 above the indicators of the prototype (option V).

Trialing of prototypes of 10 mm thick combined wood plastic, made with different ratio of components.

The results of physico-mechanical tests of experimental samples of the combined wood plastic sheet are given in table. 2

20

The use of combined wood plastic sheet significantly reduces the consumption of high-quality veneer (3-5 times) by replacing most (10-40 wt.%) Of crushed industrial waste, which allows to recycle production waste and reduce the cost of manufactured products.

Veneer peeled birch 0.75 mm thick

15 (4)

Ground veneer waste

Shredded Plastic Waste

85

Note,

The brackets indicate the number of veneer sheets; SBS-1 bakelite lacquer with a concentration of 32% in an amount of 20% (by dry residue) in both the outer and inner layers of plastic was used as a binder in the combined plastic prototypes.

247277

2

Given in Table. 2, the data of physicomechanical tests show that the specified strength characteristics of the composite plastic can be provided by changing the number of 5 sheets of veneer in the outer layers, respectively, i.e., the fraction of the outer layer of the peeled veneer sheets, respectively.

The strength characteristics of a composite plastic consisting of 6 sheets of spike in the outer layers (option II) are 10 at the level of the strength characteristics of the known DSP-B plastic sheet with a thickness of 10 mm. When the veneer is placed in parallel direction in adjacent layers (option IV), the strength characteristics of the combined plastic are significantly higher than the prototype (option V).

20

The use of combined wood plastic sheet significantly reduces the consumption of high-quality veneer (3-5 times) by replacing most (10-40 wt.%) Of crushed industrial waste, which allows to recycle production waste and reduce the cost of manufactured products.

Table 1

25 (6) 30 (8) 40 (10) 100 (25)

60

50

thirty

15

20

thirty

1360

135

table 2

62 Arrangement of fibers in a mutually perpendicular direction.

FIG. 2

Claims (1)

WOOD SHEET PLASTIC containing outer layers consisting of sheets of peeled veneer impregnated with bakelite varnish and an inner layer, characterized in that, in order to reduce the consumption of veneer without reducing the strength of the plastic, the inner layer is made of wood pressed mass consisting of crushed wood production waste laminated plastic mixed with bakelite varnish in an amount of 78–84: 16–22 wt.%, respectively, in the following ratio of components, wt.%: Veneer impregnated with bakelite varnish Wood pressing mass SU “1247277 FIG. 7