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Process index of woven bag making
Date:2020-11-08
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In the GB / t8946 and GB / t8947 national standards of plastic woven bags, the tensile loads of seam side direction and seam bottom direction are defined. The main factors affecting the suture strength are the type and type of suture line, the size of needle pitch, stitch, curling or folding edge, the size from the suture line to the bag edge, hot and cold cutting methods, etc, According to the national standard, the tensile strength of the main body joint must reach more than 67% of the basic strength, and the tensile strength of the bottom joint must reach more than 42% of the basic strength. For the upper sealing of the socket cement bag, it is recommended to treat it as the seam bottom strength. For the paper bag, the seam bottom strength is generally not up to the index, so it is suggested to change to paste bottom bag, It is suggested to use curling treatment, because the stitches on the edge of cold cutting may be torn out from the warp and weft. For woven bags without strength requirements, the stitch spacing can be close and the thread can be fine
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