Polypropylene zippered bag and production process thereof

A production process, polypropylene technology, applied in the field of polypropylene film, can solve the problems of uneven thickness, affecting use, low tensile strength, etc., and achieve the effect of uniform thickness, strong tensile strength and strong fluidity

Pending Publication Date: 2021-12-14
温州银润包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous improvement of the market's quality requirements for packaging materials, the existing polypropylene film and the zipper bag formed by polypropylene film, because of the material fo

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] This embodiment discloses a polypropylene zipper bag and its production process.

[0015] Including the following steps:

[0016] Step 1: batching; prepare polypropylene (PP), maleic anhydride, ethylene bis stearic acid amide (EBS) according to the ratio of 90%-98%:3%-5%:1%-2% to obtain mix;

[0017] Step 2: Mixing and granulation; put the materials to be mixed in step 1 into a high-speed mixer, mix for 5 minutes at a temperature greater than or equal to 60°C, and then put the mixed materials in the high-speed mixer into a cold mixer In the machine, cold mix for two minutes; the material to be mixed after cold mixing enters the twin-screw granulator for granulation through screw feeding, so as to obtain flexible polypropylene modified material;

[0018] Step 3: Casting; Stir the flexible polypropylene modified material in step 2 and polypropylene according to the ratio of 3:7, and then suck it into the casting machine after stirring, and the T-shaped die of the castin...

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PUM

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Abstract

The invention discloses a polypropylene zippered bag and a production process thereof. According to the technical scheme, the production process comprises the following steps of 1, material preparation: preparing polypropylene (PP), maleic anhydride and ethylene bisstearamide (EBS) according to a ratio of 90%-98%: 3%-5%: 1%-2% to obtain to-be-mixed materials; 2, mixing and granulating: putting the to-be-mixed materials in the step 1 into a high-speed mixer, mixing for 5 minutes at the temperature of more than or equal to 60 DEG C, then putting the to-be-mixed materials mixed in the high-speed mixer into a cold mixer, carrying out cold mixing for 2 minutes, spirally feeding the to-be-mixed materials subjected to cold mixing into a double-screw granulator for granulating, so as to obtain a flexible polypropylene modified material. In the casting process, the EBS is added, so that the flowability is high, the tensile strength of the product is high, the thickness is uniform, and the thickness is only 3-15 filaments compared with a traditional casting film.

Description

technical field [0001] The invention relates to the field of polypropylene film, more specifically it relates to a polypropylene zipper bag and its production process. Background technique [0002] With the improvement of people's living standards, commodities are gradually becoming high-end and diversified. As an important carrier for conveying product information and brand image, product packaging is also moving towards high-grade and differentiated directions. With the continuous improvement of the market's quality requirements for packaging materials, the existing polypropylene film and the zipper bag formed by polypropylene film, because of the material formula, the thickness of the cast film is relatively high, when it is necessary to produce a lower thickness The cast film will have uneven thickness and low tensile strength, which will affect the use. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the present invention provides a po...

Claims

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Application Information

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IPC IPC(8): B29B7/00B29B9/06B29C43/24B29C71/04B31B70/64C08L23/12C08L51/06C08K5/20C08J5/18
CPCB29B7/00B29B9/06B29C43/24B29C71/04B31B70/64C08J5/18C08J2323/12C08J2451/06
Inventor 吴登右
Owner 温州银润包装有限公司
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