SU1692864A1 - Three-layer lining material - Google Patents

Abstract

The invention relates to laminates of plastics and can be used to protect equipment against corrosion. The purpose of the invention is to increase the ultimate stretching while maintaining the strength of adhesive joints of the material. The latter contains a sheet and a film of polyolefin, bonded to the layer of fibers with loops of bundles of the same fibers. 1 tab.

Description

The invention relates to the technology of laminated plastics, in particular to protective chemically resistant materials that can be used in the protection against corrosion of various equipment.

The purpose of the invention is to increase the ultimate stretching while maintaining the strength of adhesive joints of the material.

Three-layer material includes a sheet and a film of polyolefin. The film is bonded to the fiber layer by loops of bundles of fibers constituting the lower layer.

EXAMPLE 1 A three-layer material includes a polypropylene sheet 1.5 mm thick, a polypropylene film 50 microns thick and a layer of polyester fibers with a density of 100 g / m2, which is connected to the polypropylene film with loops, as shown in FIG. The three-layer material is obtained in a two-stage method - on the carding-in hall-mounted aggregate ACHV-2 of class 10, readjusted to a beznitochnym fastening. First, an auxiliary layer of 50 μm thick polypropylene film is produced,

obtained by the blowing method, and lavsan fibers arranged on a film in the form of a uniform layer with a surface density of 100 g / m, which are interconnected by loops of bundles of these fibers (lavsan 0.300 tex, cutting 65 mm). The finished two-layer fabric is duplicated in the zone of extruder rolls with PP-3 polypropylene spreader. PP-3 grade polypropylene melt. Polypropylene melt in the form of a sheet with a thickness of 1.5 mm is applied to the auxiliary layer from the side of the polypropylene film and cooled.

PRI mme R 2. The three-layer material of example 1 of their polypropylene film 75 microns thick and a fibrous layer with a surface density of 120 g / m2 of nitronic fibers (0.250 tex, 65 mm) contains a polypropylene sheet 2 mm thick (polypropylene grade PP-3 ).

PRI me R 3. The three-layer material of example 1 from a polypropylene film with a thickness of 100 μm and regenerated fibers from secondary raw materials (trpie), located in a layer of surface density

(L

WITH

150 g / m2, contains a polypropylene sheet with a thickness of 3 mm (polypropylene brand PP-3).

PRI me R A. The three-layer material of example 1 from a 125 mm thick polypropylene film and a mixture of mylar fibers (0.166 tex, 65 mm) 50% and nitronic fibers (0.215 tex, 65 mm) 50%, the surface density of the fibrous layer 150 g / m2, contains a polypropylene sheet 4 mm thick (polypropylene grade PP-2).

PRI me R 5. Three-layer material according to example 4. The thickness of the polypropylene sheet B mm (polypropylene grade PP-2).

PRI me R 6. A three-layer material according to Example 1 made of a polyethylene film with a thickness of 100 microns, a mixture of nylon fibers (0.250 tex, 65 mm) 20%, spinning production of viscose polyester yarn 80%, and surface density of the layer 150 g / m; high pressure polyethylene (LDPE) silt with a thickness of 3 mm.

Example. Three-layer material according to example 6. The thickness of the polyethylene sheet 4 mm.

PRI me R 8. The three-layer material according to example 6, the thickness of the plastic sheet 5 mm.

EXAMPLE 9. Three-layer material according to Example 1. A film and a sheet of a mixture of polypropylene 50% and low-pressure polyethylene 50%. A film thickness of 100 µm, a sheet - 4 mm.

An example. Three-layer material according to example 9. The thickness of the sheet 5 mm

The results of standard tests of the proposed and known multilayer materials, as well as non-duplicated polyolefin sheets are given in the table below.

Claims (1)

Claims: Three-layer lining material comprising a sheet and a polyolefin film, bonded to the fiber layer, characterized in that. in order to increase the ultimate stretching while maintaining the strength of the adhesive joints of the material, the polyolefin film is bonded with a layer fibers loops of bundles of these fibers.