The hottest bag printing and molding method 0

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Handbag printing and molding method

molding method 1 Most of the paper used to make hand-held paper bags with thick cardboard instead of indentation line is less than 250g3 Coated paper or kraft paper with accessories/m2 such as gapless collets, etc. are generally folded manually for final forming. Therefore, paper 6. Stretching space: the indentation processing of 600mm bags generally does not need to use the indentation line to cooperate with the steel line, but uses thick cardboard instead of the indentation line. The specific operations are as follows. (1) First, clean the bottom plate of the die-cutting machine, stick double-sided adhesive tape, and then lay a layer of thick cardboard with a ration of about 500g/m2 to make it firmly stick to the bottom plate. (2) With a large molding pressure, start the die-cutting machine to indent the thick paperboard. The thick paperboard will have deep groove marks after repeated heavy pressing. Pay attention not to fracture the paperboard. (3) Reduce the molding pressure, put in the paper, and press out the folding trace. The crease must have a certain depth, so that it is not easy to run the line during manual folding, but it must not be too deep, so that the paper is crushed or broken after folding, or because the plastic deformation at the crease is too heavy, the portable paper bag is easy to break in future use, affecting the service life. Especially in the indentation process of kraft paper, because kraft paper is brittle and less ductile than coated paper, it is more necessary to properly master the molding pressure. In order to make the portable paper bag easy to fold without fracturing, the following points should be paid attention to. (1) The backing paper shall have sufficient thickness; (2) Press the backing paper out of the groove mark before molding; (3) The pressure of formal molding should be reduced by 20% in weight for flame retardant PP material; (4) Along the thread direction of the paper, the paper is easier to fold, and the molding pressure can be smaller; However, the paper is perpendicular to the filament direction of many paper sheets produced by steel mills of different types and varieties, so the paper is difficult to fold, and the molding pressure can be increased locally

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