The drawing of polypropylene mesh bags:
Polypropylene mesh bags start with a mixture of raw and auxiliary materials, which are melted and extruded into a film by an extruder. Next, the film is cooled and divided into filaments (blanks), which are then stretched and oriented to produce flat filaments. Finally, these flattened filaments are wound onto a spool to make spindles. This is the first step in making polypropylene mesh bags.
The weaving of polypropylene mesh bags:
The weaving machine interweaves the warp and weft of the flat yarn to make a cloth. Laminating: Laminate the upper mouth white film and the middle trademark film on the correct position of the mesh cloth. The mesh bag without the trademark and white film does not need this process.
The sewing of polypropylene mesh bags:
Stitch the bottom, we usually choose the flat stitch method, the side curling is three folds, the width of the side should be greater than 32.5px, and the flat stitching method should be parallel, and the distance between the inner and outer edges of the folded edge is 1/4. Floating thread and not returning stitches. Located in the middle of the fold, there should be no skipped stitches, no floating lines, etc. The side and bottom of the woven mesh fruit bags are woven together when weaving the mesh onion bags. The edge cutting should be cut with a knife, and the bottom of the polypropylene mesh bag wholesale is double-woven.
The detection of polypropylene mesh bags:
Length and width: there should not be any deviation. Colour: there should be no significant differences between polypropylene mesh bags from the same batch
Stain: No Significant pollution of polypropylene mesh bags are forbidden.
Bag edge: polypropylene mesh bags must not have significant irregularities.
Serial port bag: It should be regular, and the distance should not be significantly misaligned.
Broken weft and warp: Each polypropylene mesh bags promises to have two non-adjacent ones, but it needs to be connected firmly.
Perforation: For onion sack that require covering on the mouth, perforation is required for filling. For example, polypropylene mesh bags with a mouth string do not need this process.
Packing: Bundled and shipped with a baler
Loading and shipping