What is the standard for making plastic bags
1. Dimensional tolerance:
关于塑料和复合塑料袋的长度和宽度的公差是一样的，都是+ 15mm - 10mm。对不同意宽度公差缸布,筛选出在制袋过程中,等待处理,在胶缝袋、长度公差是指有效长度缝合后,剪切缝,做的缝边的大小,折边,详细的条件必须流入折边,特大袋尺寸公差是:1米20毫米以下,超过1 m是30毫米。
The tolerance on the length and width of plastic and composite plastic bags is the same, both of which are + 15 mm - 10 mm. For the cylinder cloth that does not agree with the width tolerance, it is screened out to wait for processing in the bag making process. The tolerance of glue seam bag and length refers to the size of the cutting seam, the size of the seam edge, the hem, and the detailed conditions must flow into the hem after the effective length is sewn. The tolerance of the oversized bag size is: less than 1 m, 20 mm, and more than 1 m, 30 mm.
2. Printed text:
Plastic bag printing is mainly letterpress printing, printing graphics position tolerance, printing graphics clear, printing image color, plastic products and other national specifications do not understand the rules, some specifications require only printing clear, therefore, plastic weaving enterprises should establish printing specifications based on the user's request, so that the enterprise specifications, that their own printing equipment, printing ink varieties, can be printed, etc. BOPP intaglio printing is about to be standardized,
3. Appearance quality:
Plastic bags, composite plastic bags, integrated bags, cement bags, all the poor appearance quality are not formed by the bag making process. However, the bag making process is the last step and also the last step of quality control.
The above is about the plastic bag production standard introduction, if you want to know more, please consult the official website.