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Metallocene linear low-density polyethylene reinforced wrapping film manufacturing process

A low-density polyethylene, metallocene linear technology, applied in the direction of flat products, applications, household appliances, etc., can solve the problem of raw materials can not play a role

Inactive Publication Date: 2020-10-23
上海瑞泽丰标准技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the three-layer structure, the performance balance of the product can only be achieved by mixing materials, but the result of mixing materials is that the raw materials cannot exert their full performance.

Method used

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  • Metallocene linear low-density polyethylene reinforced wrapping film manufacturing process
  • Metallocene linear low-density polyethylene reinforced wrapping film manufacturing process

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Embodiment Construction

[0031] The technical solutions of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0032] The manufacturing process of metallocene LLDPE reinforced stretch film comprises the following steps:

[0033] 1) The raw materials are dried, batched and mixed, and fed through a vacuum hopper;

[0034] 2) Extrude the material through the equipment, and filter the semi-finished product at the extruded place through the filter;

[0035] 3) The filtered product is processed through the die head, and the semi-finished product is cast and cooled;

[0036] 4) Then, the thickness gauge-corona treatment-swing edge traction and other processes are carried out on the finished product in sequence;

[0037] 5) Flatten the finished product to remove static electricity;

[0038] 6) Finally, the finished product is wound up.

[0039] In the stretch film structure, mLLDPE-a and mLLDPE-b are metallocene linear lo...

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PUM

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Abstract

The invention relates to the technical field of wrapping films, and discloses a metallocene linear low-density polyethylene reinforced wrapping film manufacturing process. The process is characterizedin that mLLDPE-a and mLLDPE-b in a wrapping film structure are two metallocene linear low-density polyethylene with different melt indexes respectively, are used for improving the strength, and are used for adjusting melt index of blended material according to different equipment characteristics; an mLLDPE-c is metallocene linear low density polyethylene with a high viscosity mark and is used forimproving the viscosity of a finished product film, polyethylene is thermoplastic resin prepared by polymerizing ethylene and also comprises a copolymer of ethylene and a small amount of alpha-olefinin industry, and the polyethylene is odorless, nontoxic and wax-like in hand feeling, has excellent low-temperature resistance (the lowest use temperature can reach minus 100 DEG C to minus 70 DEG C)and good chemical stability, can resist erosion of most acids and alkalis (does not resist acids with oxidizing properties), is insolubility in common solvents at normal temperature, and has low water absorption and excellent electrical insulation, and the layer A is the mLLDPE-a + mLLDPE-b + LLDPE; the B layer is mLLDPE-a + mLLDPE-b + LLDPE, the C layer is mLLDPE-a + mLLDPE-b + LLDPE, the D layer is mLLDPE-a + mLLDPE-b + LLDPE, and the E layer is mLLDPE-c.

Description

technical field [0001] The invention relates to the technical field of stretching films, in particular to a manufacturing process for metallocene linear low-density polyethylene reinforced stretching films. Background technique [0002] Stretch film, also known as "stretch film", has excellent tensile strength, puncture resistance and tear resistance, and is widely used in packaging and bundling applications such as chemical products, electronic product boxes, ceramic products, and electromechanical equipment. Stretch film can be widely used in foreign trade export, cans, food and beverage, printing and paper making, refractory materials, wooden floors, cosmetics, handicrafts, non-woven fabrics, carpets, ceramic electromechanical products, computers, communication products, books, electronic components, household appliances, In the packaging of chemical raw materials, ceramic tiles and other building materials, steel, profiles, wires, aluminum alloy profiles and other produc...

Claims

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Application Information

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IPC IPC(8): B29D7/01B29C59/10B32B27/32B32B27/06B32B7/12B32B33/00C08L23/08C08J5/18B29K23/00
CPCB29C59/10B29D7/01B29K2023/0625B32B7/12B32B27/08B32B27/32B32B33/00B32B2250/242B32B2307/54B32B2307/558B32B2307/5825C08J5/18C08J2323/08C08J2423/08
Inventor 郁加华
Owner 上海瑞泽丰标准技术服务有限公司
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