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LDPE(Low-Density Polyethylene) high-foaming sheet and packing material

A packaging material and high-foaming technology, applied in the field of foamed plastics, can solve the problems of poor moisture resistance and light resistance, low strength, affecting tear resistance and cushioning, and achieve the effect of good resilience and high strength

Inactive Publication Date: 2015-03-11
SUZHOU JIUDING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, LDPE generally has the defects of low strength and poor resilience, which affects the tear resistance and cushioning properties of packaging materials prepared from LDPE
In addition, the packaging material thus obtained also has the defects of poor moisture resistance, gas resistance and light resistance.

Method used

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  • LDPE(Low-Density Polyethylene) high-foaming sheet and packing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of LDPE high-foaming sheet: mix 90 parts of LDPE granules, 2 parts of talcum powder, 0.008 parts of color masterbatch and 0.008 parts of antistatic agent according to parts by mass, put them into the extruder for melting and kneading; Add 0.5 part of butane and 0.05 part of monoglyceride to the middle part of the machine and continue mixing to obtain a rubber compound; the rubber compound is extruded from the machine head and die, and after cooling, traction, flattening and winding Serve as LDPE high foaming material.

[0034] Preparation of packaging materials: Place the above-mentioned LDPE high-foaming sheet, aluminized film, woven cloth, etc. on the substrate frame, and pull the substrate according to the order of the auxiliary rollers and transmission equipment, and the PE plastic particles are molded by the screw. After melting, it is extruded in a linear form from the die of the flat die head. After high-temperature stretching, it adheres to the surfa...

Embodiment 2

[0036] Except the proportioning of raw materials in the preparation of LDPE high-foaming sheet, other is the same as embodiment 1. In this example, the raw material ratio of LDPE high foaming sheet is 100 parts of LDPE colloidal particles, 5 parts of talcum powder, 2 parts of butane, 0.15 parts of monoglyceride, 0.02 parts of color masterbatch and 0.02 parts of antistatic agent.

Embodiment 3

[0038] Except the proportioning of raw materials in the preparation of LDPE high-foaming sheet, other is the same as embodiment 1. In this example, the raw material ratio of LDPE high foaming sheet is 95 parts of LDPE rubber particles, 3.5 parts of talcum powder, 1 part of butane, 0.1 part of monoglyceride, 0.01 part of color masterbatch and 0.01 part of antistatic agent.

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Abstract

The invention discloses an LDPE(Low-Density Polyethylene) high-foaming sheet and a packing material. The LDPE high foaming sheet comprises the following components in parts by mass: 90-100 parts of LDPE colloidal particles, 2-5 parts of a nucleating agent, 0.5-2 parts of a foaming agent, and 0.05-0.15 part of an antisbrinking agent and an auxiliary addition agent, so that the sheet has the advantages that the rebound elasticity is good and the strength is high. An aluminum plated membrane of which the texture is PET(polyethylene terephthalate) is arranged on the surface of the LDPE high-foaming sheet of the packing material, weaved cloth of which the texture is PP(propene polymer) is arranged on the other surface of the LDPE high foaming sheet, and cast membranes of which the texture is PE(Poly Ethylene) are respectively arranged on the surfaces of the aluminum plated membrane and the weaved cloth, so that the packing material has the advantages that the rebound elasticity is good, the strength is high, and the humidity resistant property, air resistant property and the light resistant property are higher.

Description

technical field [0001] The invention relates to the technical field of foamed plastics, in particular to a high-foamed LDPE sheet and packaging material. Background technique [0002] Low Density Polyethylene (LDPE) foam material has excellent physical, chemical and mechanical properties. It is tough, flexible, wear-resistant, has excellent electrical insulation, heat insulation and chemical resistance, and is widely used in many fields such as packaging, chemical industry, and construction. [0003] In the prior art, LDPE generally has the defects of low strength and poor resilience, which affects the tear resistance and cushioning properties of packaging materials prepared from LDPE. In addition, the packaging material thus obtained also has the disadvantages of poor moisture barrier, gas barrier and light barrier properties. Contents of the invention [0004] In view of this, the present invention provides an LDPE highly foamed sheet with good resilience and high stre...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K13/02C08K3/34C08K3/26C08K5/103C08J9/14B32B27/02B32B27/08B32B27/32B32B27/36B32B15/09B65D65/40
CPCC08L23/06B32B5/18B32B27/08B32B27/12B32B27/32B32B27/36B32B37/02B32B2250/04B32B2266/025B65D65/40C08J5/18C08J9/141C08J2203/14C08J2323/06C08J2423/06C08K2201/017C08L2201/02C08L2201/04C08L2201/08C08L2203/14C08L2203/16C08L2205/025C08L2207/066C08K13/02C08K3/34C08K5/103
Inventor 夏克文冯永根魏良军潘丙根陈利萍
Owner SUZHOU JIUDING
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