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Five-layer composite freshness-keeping isolating membrane and preparation method thereof

A separation film, layer composite technology, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc. Firmly stretched, not easy to stretch

Active Publication Date: 2013-09-25
HAOCHEN WUXI PLASTIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The new material five-layer composite film produced by the invention can not only overcome the weakness that the polyethylene isolation film is easily twisted and deformed and cannot be reused, but also can make up for the use of polypropylene yarn and brown silk pad cloth as rubber tires to produce isolation bundles, and the surface layer is prone to yellowing and hair loss. Black, polluted rubber, easy to produce dirt in the process of repeated use, is currently not developed and produced in the market

Method used

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  • Five-layer composite freshness-keeping isolating membrane and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0024] Such as figure 1 As shown, the five-layer composite fresh-keeping isolation film, the five-layer film is as follows: the first polyethylene layer (1), the first polyolefin layer (3), the woven wire mesh (5), the second polyolefin layer (4), The second polyethylene layer (2); the woven wire mesh (5) forms a staggered fiber mesh structure.

[0025] The thickness of the first polyethylene layer (1) and the second polyethylene layer (2) is 0.2-0.5mm.

[0026] The thickness of the first polyolefin layer (3) and the second polyolefin layer (4) is 0.3-0.6mm.

Embodiment 2

[0028] The preparation method of the five-layer composite fresh-keeping isolation film, in parts by weight:

[0029] (1) Preparation of polyethylene layer: mix according to the ratio of 20 parts of high-density polyethylene HDPE, 5 parts of plasticizer, 3 parts of anti-blocking agent, 15 parts of low-density polyethylene LDPE, and 30 parts of LLDPE, heat to 180°C, Extruded under the pressure of 10MPa;

[0030] (2) Preparation of polyolefin layer: mix according to the ratio of 20 parts of high-density polyethylene HDPE and 80 parts of low-density polyethylene LDPE, heat to 19 ° C, and extrude under a pressure of 5 MPa;

[0031] (3) Preparation of woven wire mesh: use chemical fiber fibers to weave into a mesh shape, and the mesh size of the wire mesh is 0.01mm;

[0032] (4) Composite cooling: according to the first polyethylene layer (1), the first polyolefin layer (3), the braided wire mesh (5), the second polyolefin layer (4), and the second polyethylene layer (2) Sequentia...

Embodiment 3

[0038] The preparation method of the five-layer composite fresh-keeping isolation film, in parts by weight:

[0039] (1) Preparation of polyethylene layer: mix according to the ratio of 30 parts of high-density polyethylene HDPE, 8 parts of plasticizer, 7 parts of anti-blocking agent, 20 parts of low-density polyethylene LDPE, and 35 parts of LLDPE, heat to 180°C, Extruded under the pressure of 5MPa;

[0040] (2) Preparation of polyolefin layer: mix according to the ratio of 15 parts of high-density polyethylene HDPE and 85 parts of low-density polyethylene LDPE, heat to 19 ° C, and extrude under a pressure of 5 MPa;

[0041] (3) Preparation of woven wire mesh: use chemical fiber fibers to weave into a mesh shape, and the mesh size of the wire mesh is 0.05mm;

[0042] (4) Composite cooling: according to the first polyethylene layer (1), the first polyolefin layer (3), the braided wire mesh (5), the second polyolefin layer (4), and the second polyethylene layer (2) Sequential...

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Abstract

The invention relates to a five-layer composite freshness-keeping isolating membrane and a preparation method thereof and in particular relates to an isolating freshness-keeping membrane in the production and use process of a rubber radial tire. The five-layer composite freshness-keeping isolating membrane can be used for a rubber tire as an auxiliary material and belongs to the technical field of plastic membranes. According to the five-layer composite freshness-keeping isolating membrane, originally single disposable isolating membrane is changed to be a new material, namely the five-layer coextrusion composite membrane which is used for the rubber tire composed of two layers of surface polyethylene surface layers, two layers of polyolefins interlayers and one layer of polypropylene fiber woven wire mesh positioned among the four layers and can be recycled. The freshness-keeping isolating layer is firm in structure and not easy to stretch, deform, damage or discolor after hot-pressing solidification, the thickness of the freshness-keeping isolating layer is 0.3-1.3mm, and the freshness-keeping isolating layer can be reused.

Description

technical field [0001] The invention relates to a five-layer composite fresh-keeping isolation film and a preparation method thereof, in particular to an isolation fresh-keeping film during the production and use of rubber radial tires, which can be used as an auxiliary material for recycling rubber tires, and belongs to the technical field of plastic films. Background technique [0002] The five-layer composite fresh-keeping isolation film of the invention belongs to the auxiliary material of the rubber tire manufacturing process. In the manufacturing process of all-steel and semi-steel radial tires, it is necessary to paste the isolation film and the rubber sheet flatly to play the role of isolation and preservation. Due to the low tensile strength of the existing isolation film, it is easy to form adhesion and stretching when peeling off. Deformation, resulting in ribs or wrinkles, which makes it difficult to peel off, often ribs or wrinkles of the isolation film will dam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/12B32B27/02B32B27/18B32B27/32C08L23/06C08L23/08B29C69/02B29C47/92B29C48/92
CPCB29C48/08B29C48/022
Inventor 蒋晓明吴珂
Owner HAOCHEN WUXI PLASTIC IND CO LTD
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