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Preparation method of plastic woven bag

A technology for plastic woven bags and woven bags, applied in the directions of bags, sacks, containers, etc., can solve the problems of poor tensile strength, poor bursting resistance, poor tearing degree, etc., and achieve the improvement of melt flow rate and peeling strength. , The effect of preventing high temperature creep

Active Publication Date: 2014-12-10
哈尔滨盛洋塑胶材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of poor burst resistance, poor tearing degree and poor tensile strength existing in plastic woven bags using polypropylene material as the base cloth, and to provide a preparation method for plastic woven bags

Method used

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  • Preparation method of plastic woven bag

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Experimental program
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specific Embodiment approach 1

[0020] Specific implementation mode one: this implementation mode is a kind of preparation method of plastic woven bag, specifically is finished according to the following steps:

[0021] 1: Add plastic-coating alloy additives for coating, LLDPE resin, PP resin antioxidant and ultraviolet absorber into the mixer in sequence, and mix evenly at a temperature of 60-100°C to obtain a mixture; the coating described in step 1 The mass ratio of plastic coating alloy additive and LLDPE resin is 100:(2~3); the mass ratio of coating plastic coating additive described in step 1 and PP resin antioxidant is 100:(2~3) ; The mass ratio of coating plastic-coating alloy additive and ultraviolet absorber described in step 1 is 100:(0.02~0.03);

[0022] Two: Add the mixture to the extruder at a feeding speed of 125kg / min for extrusion, and then cool and form it to obtain a coated woven fabric for producing woven bags;

[0023] Three: First, preheat the temperature of the preheating roller to 60...

specific Embodiment approach 2

[0040] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the molecular weight of the low-density polyethylene described in step ① is 100,000 to 300,000. Others are the same as the first embodiment.

specific Embodiment approach 3

[0041] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the melt flow rate of the ethylene-propylene copolymer described in step ① is 120 g / 10 min. Others are the same as those in Embodiment 1 or 2.

[0042] The ethylene-propylene copolymer described in this embodiment is prepared by using ethylene monomer and propylene monomer as raw materials, using a metallocene catalyst as a catalyst, and preparing the molar ratio of ethylene monomer to propylene monomer at 1:1.

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Abstract

The invention relates to a preparation method of a plastic woven bag. The invention aims at solving the problems of poor bursting strength, poor tearing strength and poor tensile strength of an existing plastic woven bag taking a polypropylene material as a base fabric. The preparation method comprises the following steps: 1, preparing a mixture from a coating plastic coated alloy additive, an LLDPE (linear low density polyethylene) resin, a PP (propene polymer) resin antioxidant and an ultraviolet light absorber; 2, extruding the mixture by using an extruder and cooling and forming to obtain a coating woven fabric used for producing the woven bag; 3, putting the coating woven fabric used for producing the woven bag into a screw extruder and extruding to obtain ribbon-like filaments of the coating fiber of the woven bag; 4, using a cylinder loom to woven the ribbon-like filaments of the coating fiber of the woven bag through a flat die method, and sequentially cutting, tailoring and sewing to obtain the plastic woven bag. The preparation method of the plastic woven bag is mainly used to prepare the plastic woven bag.

Description

technical field [0001] The invention relates to a preparation method of a plastic woven bag. Background technique [0002] At present, the production of plastic woven bags on the market mostly uses traditional polypropylene material as the base fabric, and the coating film material made of polypropylene powder with good fluidity is the main material, and appropriate high-pressure polyethylene material is added to improve the coating. The coating viscosity of the film. Using this method to produce raw materials to produce plastic woven bags, although to a certain extent meet the performance, but it will greatly affect the tensile strength, fluidity, aging resistance, high temperature, product surface and performance of the material, often due to aging The problems lead to the product's insufficiency in load-bearing (tensile strength), peel strength, fluidity, surface gloss of the product, etc., so it limits a certain range of use in terms of use. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/16C08K13/06C08K9/04C08K3/26C08K5/14C08K5/103C08L23/08C08L23/12B65D30/02B29C47/92B29C48/92
CPCB29C48/92C08L23/06C08L23/16C08L2205/02C08L2205/03C08L23/0815C08K13/06C08K5/14C08K5/103
Inventor 郭照军刘振雷郭宇
Owner 哈尔滨盛洋塑胶材料有限公司
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