A kind of plastic woven bag making and molding method

Abstract

The invention provides a method for making a plastic woven bag, which uses a plastic woven bag making and molding device, including a base, a mounting plate, a flat wire forming machine, a pulling mechanism, a tensioning mechanism, a circulating cooling mechanism, an air-drying mechanism and Winding collection mechanism. The invention provides a method for making a plastic woven bag, which can solve the following problems in the process of making a plastic woven bag: a. After the plastic raw material is heated and stretched to form a flat wire, the flat wire has a certain high temperature, It is necessary to cool down the flat yarn before it is wound and collected; b. After the flat yarn is extruded from the flat yarn forming machine, it will be pulled by the winding mechanism, and the newly formed flat yarn is prone to stretching deformation during the pulling process , it is necessary to pull the flat wire to a certain extent when it is extruded to prevent the deformation of the flat wire; c. After the flat wire is water-cooled, there will be water drops on the flat wire, and it is difficult to dry the water drops completely by air drying in a short time .

Description

technical field [0001] The invention relates to the technical field of plastic woven bags, in particular to a method for making plastic woven bags. Background technique [0002] Plastic woven bags are composed of polypropylene bags and polyethylene bags according to the main materials; according to the sewing method, they are divided into seamed bottom bags and seamed bottom bags. At present, it is widely used as a packaging material for fertilizers, chemical products and other items. Its main production process is to use plastic raw materials to form a film through melt extrusion, and then cut it into strips longitudinally. The strips are heated, drawn, oriented and shaped at the same time, and finally wound into flat yarn spindles for weaving braided fabrics, generally called woven bags. . [0003] At present, the following problems exist in the production and molding process of plastic woven bags: a. After the plastic raw material is heated and stretched to form a flat ...

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Problems solved by technology

[0003] At present, the following problems exist in the production and molding process of plastic woven bags: a. After the plastic raw material is heated and stretched to form a flat wire, because it is formed by heating and stretching after melting, the flat wire has a certain high temperature. It is necessary to cool down the flat yarn before it is wound and collected; b. After the flat yarn is extruded from the flat yarn forming machine, it will be pulled by the winding mechanism, and the newly formed flat yarn is prone to stretching deformation during the pulling process , it is necessary to pull the flat wire to a certain extent when it is extruded to prevent the deformation of the flat wire; c. After the flat wire is water-cooled, there will be water drops on the flat wire, and it is difficult to dry the water drops completely by air drying in a short time

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