Traditional style ordinary packaging bag type can not meet the market needs, and shaped bags, stand-up pouches and other kinds of bag-shaped bag development no doubt for all plastic flexible packaging manufacturing industry. Plastic packaging bags in fact, self-supporting self-sealing aluminum foil bag production process in key points of manipulation, timely processing and handling of the said difficulties. Self-supporting self-sealing aluminum foil bags bag shape does not level the problem, flatness is one of the indicators to consider the quality of the appearance of the packaging bag sub value.
Tea packaging bags, composite packaging bags self-standing self-sealing aluminum foil bags flatness in addition to the production and manufacturing material selection, and heat sealing temperature, working pressure, time and the actual effect of refrigeration and other elements. Resulting in the composite bag gathered deformation, endangering the back side of the self-standing self-sealing aluminum foil bags molding; when the refrigeration is not enough to lead to heat sealing after the self-standing self-sealing aluminum foil bags deformation is not enough, resulting in wrinkles. The problem of poor symmetry of self-standing self-sealing aluminum foil bags, symmetry not only jeopardizes the shape, jeopardizes the sealability.
It is necessary to pay attention to the tension control of the bottom material when manufacturing, which leads to deformation of the bottom end or wrinkles caused by the mismatch of support force. Food packaging bags, vacuum packaging bags