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Inside coating technology for plastic woven bag

A plastic woven bag and coating process technology, applied in the field of plastic woven bags, can solve the problems of adverse health effects of environmental operators, multiple production equipment, and large energy consumption, and achieve environmental protection, high production efficiency, and equipment investment. little effect

Inactive Publication Date: 2018-05-11
安徽省临泉县万隆塑料包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This production method requires more production equipment, consumes a lot of energy, and has requirements for the factory building; at the same time, it has adverse effects on the environment and the health of operators.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] (1) Preparation of coating: Add all raw materials into a high-speed mixer and mix evenly, mix at room temperature, and the mixing time is 3-5min; put the mixed material into a screw extruder to melt and blend, extrude through a die, and granulate to obtain Paint granules are ready for use;

[0024] Melt blending process parameters include die temperature at 210-215°C, melt temperature at 245-275°C, screw speed at 260-300rpm / min, and feeder speed at 25-45rpm / min;

[0025] (2) Preheating: put the woven base fabric into the oven, the drying temperature is 100°C-120°C, and the drying time is 5-7min;

[0026] (3) Spraying: the paint particles prepared in step (1) are added to the spraying device, and the paint is sprayed to the preheated woven base cloth under the spraying of the jetting machine;

[0027] The thickness of the sprayed coating film is 110-130um;

[0028] (4) Post-processing: cooling down and drying the sprayed woven base fabric, performing static elimination...

Embodiment 1

[0030] An internal coating process of a plastic woven bag. First, the finished flat yarn is fed into a loom to weave a woven bag cloth as a film-coated woven base cloth, and then the coating is coated on the inner side of the woven base cloth to form an inner lining. The coating is made of the following raw materials in parts by mass: 60 parts of homopolypropylene, 20 parts of low-density polyethylene, 8 parts of anti-aging masterbatch, 3 parts of polyethylene wax, 3 parts of silicone oil, and nano-Au 28 (SCH 3 ) 20 0.5 part of cluster;

[0031] The anti-aging masterbatch is prepared by melting and blending nano-montmorillonite, rutile nano-titanium dioxide, and phenyl o-hydroxybenzoate according to the mass ratio of 10:4:1, and extrusion granulation;

[0032] Nano Au 28 (SCH 3 ) 20 Cluster is a nano-sized material based on gold clusters, adding a small amount can improve the adhesion of the coating;

[0033] Described coating process comprises the steps:

[0034] (1) P...

Embodiment 2

[0041] An internal coating process of a plastic woven bag. First, the finished flat yarn is fed into a loom to weave a woven bag cloth as a film-coated woven base cloth, and then the coating is coated on the inner side of the woven base cloth to form an inner lining. The coating is made of the following raw materials in parts by mass: 65 parts of homopolypropylene, 25 parts of low-density polyethylene, 9 parts of anti-aging masterbatch, 4 parts of polyethylene wax, 4 parts of silicone oil, nano-Au 28 (SCH 3 ) 20 0.7 copies of clusters;

[0042] The anti-aging masterbatch is prepared from nano-montmorillonite, rutile nano-titanium dioxide, and phenyl o-hydroxybenzoate according to the mass ratio of 10:5:1.5 through melt blending and extrusion granulation;

[0043] Described coating process comprises the steps:

[0044] (1) Preparation of paint: Add all raw materials into a high mixer and mix evenly, mix at room temperature, and the mixing time is 4 minutes; put the mixture i...

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PUM

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Abstract

The invention discloses an inside coating technology for a plastic woven bag. According to the technology, firstly, finished ribbon-like filaments are sent into a weaving machine for weaving of wovenbag fabric used as film-coated weaving base fabric, then the inner side of the weaving base fabric is coated with paint, a lining is formed, and the paint is prepared from raw materials in parts by mass as follows: 60-70 parts of homo-polypropylene, 20-30 parts of low-density polyethylene, 8-10 parts of anti-aging master batch, 3-5 parts of polyethylene wax, 3-5 parts of organic silicone oil and 0.5-1 part of nano Au28(SCH3)20 clusters. The coating technology comprises steps as follows: (1) preparation of the paint, (2) preheating, (3) spraying and (4) aftertreatment. The sprayed paint adoptedin the technology is a novel environment-friendly material, is sprayed on the inner side of the base fabric of the woven bag and has the characteristics that the coating is dense, continuous and seamless, so that the coated woven bag has the characteristics of high strength, low price, durability and the like. According to the coating technology for the woven bag, spraying is the main technology,the method is simple in technology, low in equipment input and high in production efficiency, and environmental protection is facilitated.

Description

technical field [0001] The invention belongs to the field of plastic woven bags, and in particular relates to an internal coating process of plastic woven bags. Background technique [0002] Most of the plastic woven bags on the market today are made of polypropylene (PP), which has been the fastest-growing major thermoplastic, especially in fiber and filament, film extrusion, and injection molding processing. Polypropylene's excellent flow properties and wide range of flow rates, combined with other unique polymer properties, give it excellent processability. The lower flow rate can meet the processing requirements of extruded tape, tape filament and monofilament, etc., and can also make the finished product have tensile strength and low elongation, while maintaining sufficient transverse integrity, so that the winding machine guide device The splitting and dusting conditions are kept to a minimum. [0003] Woven bags are usually woven from cross-woven wires, and there ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/22B05D3/02C09D123/12C09D123/06C09D5/08C09D7/61C09D7/63C09D7/65
CPCB05D3/0218B05D7/227B05D2507/01B05D2507/02C08K2003/2241C08K2201/011C08L2201/08C08L2205/025C08L2205/035C09D5/08C09D5/18C09D123/12C08L23/06C08L83/04C08K13/02C08K3/22C08K3/346C08K5/1345
Inventor 姚启明
Owner 安徽省临泉县万隆塑料包装有限公司
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