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Plastic weaving bag production process

A plastic woven bag and production process technology, which is applied in the field of packaging materials, can solve the problems of high cost, insufficient rigidity, toughness, and room temperature stability of plastic woven bags, and consume a large amount of electric energy, so as to achieve less winding, change room temperature stability, and save energy. The effect of electricity

Inactive Publication Date: 2014-02-12
TONGCHENG FURUN PACKAGING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Plastic woven bags are made of raw materials into plastic flat wire, and then the flat wire is woven into cloth, and then sewn into bags according to a certain size. With the rapid development of China's economy, whether it is industry, electronics or agriculture, plastic woven bags The demand for bags is increasing day by day, so there is an urgent need for manufacturers of plastic woven bags to continuously innovate and produce products with better quality. The application number is CN201210442333.0, which discloses a preparation method for a composite plastic woven bag, which includes coating in turn. The steps of film, corona, hot-melt pressing, and seam bottom, this invention uses hot-melt pressing to bond the joint of the woven base fabric, so that the thickness of the joint is close to the thickness of other parts, so that the bag The surface of the bag is smooth, and the pattern printed on the surface of the bag is clear and beautiful. Moreover, the tensile load of the joint after lamination reaches more than 450N / 50mm. In addition, corona treatment is performed on the woven base fabric after coating to change its surface energy. , increase the printing fastness, but the plastic woven bag made by this process has some deficiencies in rigidity, toughness and room temperature stability, and the production process needs to consume a lot of electric energy, and the cost is high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Plastic weaving bag production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Raw material ratio: polypropylene resin PP T30S: 54%, polypropylene resin PP 045: 29%, nano calcium carbonate filler masterbatch: 17%;

[0020] 2. Mixing: Weigh 125kg of raw materials prepared in step (1), mix them with a high-speed mixer, and then dry them. The drying temperature is controlled at 95°C and the drying time is controlled at 18 minutes;

[0021] 3. Wire drawing: feed the raw material prepared in step (2) into the extruder, and after the heating of the barrel and the mutual shearing action between the screw and the barrel, it becomes molten in an almost completely plasticized state. The temperature is controlled at 220°C, and it is formed and extruded into a film through a die head. The traction ratio is controlled to be 1:5, and then it is cooled by water, and the water temperature is controlled at 48°C. , the draft ratio is controlled to be 5, and the flat yarn shrinks at a low traction speed after heat setting, and the retraction ratio is controlled t...

Embodiment 2

[0026] Example 2: The rest are the same as in Example 1, except that in the step (2), the drying temperature is 98°C and the drying time is 20 minutes; in the step (3), the heating temperature is 230°C, the water temperature is 50°C, and the The reduction ratio is 0.97.

Embodiment 3

[0027] Example 3: The rest is the same as Example 1, the difference is that in the step (2), the drying temperature is 101°C, and the drying time is 22min; in the step (3), the heating temperature is 240°C, and the water temperature The temperature is 52°C, and the shrinkage ratio is 0.99.

[0028] After the above process steps, take out the plastic woven bag sample, to be tested:

[0029]

[0030] From the above data, it can be seen that the radial and weft tensile loads of the product have reached 650 N (50 mm) -1 All of the above fully meet the standards of GB / T8947-1998, and the heat resistance is good, and the drop test is also all qualified. The mechanical properties of the product meet the requirements, or even better, and the appearance also meets the requirements. There are no more than 2 broken threads, and there are no broken needles, thread breaks, unsewn curls, insufficient composite width, obvious shedding, air holes, or hard lumps.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a plastic weaving bag production process and relates to the field of packing materials. The process comprises five technological processes of raw material burdening, mixing, drawing, weaving, printing-cutting and sewing. In the process method, raw material proportions in the raw material burdening process are reasonable, the performances of all the raw materials are fully played, the combined performances are greatly improved, a filling master batch adopts nano-calcium carbonate, and the mechanical properties and stability of the materials are improved; by reasonably controlling the parameters such as temperature, time and retraction ratio in the drawing process, manufactured ribbon-like filaments are excellent in quality and good in mechanical properties without being easily broken, and massive electric energy is saved by adopting a cam-combined energy-saving winding machine for winding and molding; after all steps of the weaving process, yarns are uniformly arrayed with less crossing and twisting, and a cloth surface has no wrinkles and is more attractive and reasonable in density; by reasonably controlling the needle pitch in the sewing process, the sewing direction strength of a weaving bag is high and the weaving bag has good falling performance.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a production process of plastic woven bags. [0002] Background technique [0003] Plastic woven bags are made of raw materials into plastic flat wire, and then the flat wire is woven into cloth, and then sewn into bags according to a certain size. With the rapid development of China's economy, whether it is industry, electronics or agriculture, plastic woven bags The demand for bags is increasing day by day, so there is an urgent need for manufacturers of plastic woven bags to continuously innovate and produce products with better quality. The application number is CN201210442333.0, which discloses a preparation method for a composite plastic woven bag, which includes coating in turn. The steps of film, corona, hot-melt pressing, and seam bottom, this invention uses hot-melt pressing to bond the joint of the woven base fabric, so that the thickness of the joint is close to th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D01D5/42D01F6/46D01F8/06D01F1/10B31B1/68B31B50/68
Inventor 杨峰
Owner TONGCHENG FURUN PACKAGING MATERIAL
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