Internal direct coating process of composite plastic woven bag and preparation method thereof

A technology of composite plastics and coating process, which is applied in the field of plastic woven bags, can solve the problems of unstable production conditions, high energy consumption, and high cost, and achieve the effects of being beneficial to environmental protection, optimizing control parameters, and improving production efficiency

Inactive Publication Date: 2019-03-19
温州晨光集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Recently, in the coating production of plastic woven bags, special coating materials for copolymerization or special coating materials produced by homopolypropylene powder are generally used. The cost is high and the energy consumption i

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A direct coating process for the interior of a composite plastic woven bag, which is characterized in that the finished flat yarn is first fed into a loom to weave into a woven bag cloth as a film-coated woven base cloth, and then the paint is coated on the inside of the woven base cloth To form the inner lining, the coating consists of the following raw materials in parts by weight:

[0028] 40-60 parts of polypropylene powder, 5-8 parts of cooling masterbatch, 3-5 parts of coating grade polyethylene, 1-2 parts of modifier, 1-2 parts of auxiliary agent:

[0029] Described coating process comprises the following steps:

[0030] Step 1: First use weighing equipment to weigh the raw materials according to the parts by weight of the coating components;

[0031] Step 2: Add the raw materials weighed in step 1 into the high-speed mixer and mix at a high speed to form a uniform mixture;

[0032] Step 3: heating the mixture formed in step 2 for a period of time;

[0033] St...

Embodiment 2

[0039] A direct coating process for the interior of a composite plastic woven bag, which is characterized in that the finished flat yarn is first fed into a loom to weave into a woven bag cloth as a film-coated woven base cloth, and then the paint is coated on the inside of the woven base cloth To form the inner lining, the coating consists of the following raw materials in parts by weight:

[0040] 30-50 parts of polypropylene powder, 5-7 parts of cooling masterbatch, 3-5 parts of coating grade polyethylene, 1-1.5 parts of modifier, 1-3 parts of auxiliary agent:

[0041] Described coating process comprises the following steps:

[0042] Step 1: First use weighing equipment to weigh the raw materials according to the parts by weight of the coating components;

[0043] Step 2: Add the raw materials weighed in step 1 into the high-speed mixer and mix at a high speed to form a uniform mixture;

[0044] Step 3: heating the mixture formed in step 2 for a period of time;

[0045] ...

Embodiment 3

[0051] A direct coating process for the interior of a composite plastic woven bag, which is characterized in that the finished flat yarn is first fed into a loom to weave into a woven bag cloth as a film-coated woven base cloth, and then the paint is coated on the inside of the woven base cloth To form the inner lining, the coating consists of the following raw materials in parts by weight:

[0052] 50-70 parts of polypropylene powder, 8-9 parts of cooling masterbatch, 4-6 parts of coating grade polyethylene, 1-2 parts of modifier, 2-6 parts of auxiliary agent:

[0053] Described coating process comprises the following steps:

[0054] Step 1: First use weighing equipment to weigh the raw materials according to the parts by weight of the coating components;

[0055] Step 2: Add the raw materials weighed in step 1 into the high-speed mixer and mix at a high speed to form a uniform mixture;

[0056] Step 3: heating the mixture formed in step 2 for a period of time;

[0057] St...

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PUM

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Abstract

The invention discloses an internal direct coating process of a composite plastic woven bag and a preparation method thereof. The preparation method is characterized by comprising the following steps:first sending finished product ribbon-like filaments into a weaving machine to form a piece of woven bag cloth serving as laminated woven basic cloth, and then smearing the paint on the inner side ofthe woven basic cloth to form a liner. The paint is prepared from the following raw materials in parts by weight: 40 to 60 parts of polypropylene powder, 5 to 8 parts of cooling master batch, 3 to 5parts of coating-type polyethylene, 1 to 2 parts of modifier, and 1 to 2 parts of aid. All raw materials are mixed at a high speed, heated, extruded, coated with a film, laminated, cut, and sewed. Thespraying paint adopted in the invention is a novel environment-friendly material and is sprayed on the inner side of the coating film of the woven bag. The composite plastic woven bag has the characteristics of compactness, continuity and no seam of the coating. The produced woven bag is resistant to corrosion, resistant to high temperature and durable. The woven bag coating process provided in the invention adopts a high-efficiency continuous production technology; and by optimizing control parameters of a processing process, the continuous production can be realized, and the production efficiency can be improved.

Description

technical field [0001] The invention relates to the field of plastic woven bags, in particular to an internal direct coating process of a composite plastic woven bag and a preparation method thereof. Background technique [0002] Most of the plastic woven bags on the market now use polypropylene as raw material, and polypropylene is the fastest growing major thermoplastic, especially in fiber and filament, film extrusion, injection molding processing, etc. Polypropylene's excellent flow properties and wide range of flow rates, combined with other unique polymer properties, give it excellent processability. [0003] Recently, in the coating production of plastic woven bags, special coating materials for copolymerization or special coating materials produced by homopolypropylene powder are generally used. The cost is high and the energy consumption is high. The quality is unstable due to different batches, which makes the coating process fluctuate greatly in the production pr...

Claims

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Application Information

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IPC IPC(8): D06N3/00D06N3/04
CPCD06N3/0061D06N3/045D06N2211/20
Inventor 王良洲
Owner 温州晨光集团有限公司
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