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Prepn of polyolefine resin specially for permeating curtain coated film

A technology of polyolefin and high permeability, which is applied in the field of preparation of special resin for polyolefin high air-permeable cast film, can solve the problems of unsatisfactory air-permeable uniformity and mechanical properties, meet the requirements of production and processing and use requirements, and improve dispersion Uniformity, the effect of improving mechanical properties and processing properties

Inactive Publication Date: 2003-11-05
南安长利塑胶有限公司 +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since 1990, Japan, South Korea, and Germany have successively researched and developed this technology, and began to realize mass production in the middle and late 1990s, but their products are not ideal in terms of ventilation uniformity and mechanical properties.
According to the results of domestic data retrieval, there are no research literatures, achievements and patents on the special resin for breathable cast film made of polyolefin (copolymerized PP, LLDPE, LDPE) as the base material, adding ultra-fine calcium carbonate and dispersant, etc. Information report

Method used

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  • Prepn of polyolefine resin specially for permeating curtain coated film
  • Prepn of polyolefine resin specially for permeating curtain coated film

Examples

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Embodiment 1

[0015] Superfine CaCO 3 (Particle size 3 ~ 10um) 25kg placed in a high-speed kneader (speed 1000r p m, temperature 105 ± 2 ℃) kneaded for 20 minutes, added 0.6kgTi-Al composite coupling agent, kneaded for 15 minutes, then added 2kgOPE Dispersant, knead for 10 minutes, then add 5kg of LDPE, 6kg of LLDPE, 2.5kg of copolymerized PP, 2.5kg of POE modifier PP, mix for 5 minutes, put it in a pressurized internal mixer (temperature 135±3°C) and banbury for 10 minutes Then put it in a double-roller rubber mixing machine and roll it into thin slices of about 3mm. After cooling, it will enter the crusher and be crushed into granules of about 3×4mm. ~168℃, Zone II 168~172℃, Zone III 168~172℃, Zone IV 160~165℃, Die 150~153℃) Extruded and pelletized to form a special resin.

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Abstract

The present invention is preparation of polyolefine resin specially for permeating curtain coated film. Polyolefine resin and superfine mineral filler as main material are added with Ti-Al composite coupling agent, POE modifier and OPE dispersant, and the mixture is further treated through coupling, dispersing, internally mixing, extruding and dicing to produce the special resin. The special resin is further treated through curtain coating and stretching to form fine and homogeneous pores between the mineral filler phase and the polyolefine phase in the film, and through cooling and crystallization permeating curtain coated polyolefine film is formed. The film has the features of being permeating, soft, high in stretching strength, easy degradation, etc, and may be used widely in medicine, food packing, daily used article and other fields.

Description

technical field [0001] The invention relates to a new material for manufacturing plastic films, in particular to the preparation and method of a special resin for polyolefin highly air-permeable casting films. Background technique [0002] The special resin for polyolefin high-breathability cast film is a new polymer material researched and developed abroad in the middle and late 1990s, and it belongs to the development and deep processing project of high-grade synthetic resin varieties. The film produced by the resin through the casting and stretching process has the characteristics of large air permeability (and no water leakage), soft texture, high tensile strength, good hygienic performance, and can be environmentally degraded after being discarded. Widely used in medical and health product packaging (medicinal film, surgical gown, medical gloves, women's sanitary napkins, baby diapers), food packaging (preservative film, composite film, cooked food packaging bags), dail...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/40C08K3/26C08L23/06
Inventor 郑叙炎张华集郑书炯郑忠诚孔晓玲
Owner 南安长利塑胶有限公司
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