High temperature cooking bag surface wrinkle-causes and countermeasures

First, the form of wrinkling after sterilization of high temperature cooking bag, regardless of any composite bag requires good flatness, true color, excellent opening, high temperature cooking bag is no exception.

There are three types of wrinkling:

1. The printing substrate has longitudinal, transverse or irregular creases.

2. The surface of the substrate and the composite substrate is wrinkled together, and the flatness is very poor.

3. The printing substrate shrinks, the shrinkage is separated from the composite substrate, there is air in the middle, and the stripping strength is often very poor.

Second, the factors that wrinkle the surface of the high-temperature cooking bag after sterilization

There are three main considerations for analysis:

1. When printing, the temperature of drying channel is too high, the constant tension between winding and winding is inconsistent, and the winding tension is too large to cause deformation of PET film.

2. The paper core of the winding roll is not smooth, because the volume of the winding product continues to increase, the bottom of the winding will be longitudinally or horizontally wrinkled, so that the originally flat printing substrate is not smooth, this wrinkle phenomenon is not easy to eliminate in the composite process.

3. The printing traction roll has a foreign body or is too dirty, and the printing substrate slides horizontally when it passes through the foreign body. When the sliding substrate passes through the imprinting roller, it is creased, and this crease is regular, and there is no section. The solution is :1) According to the workshop temperature and humidity, machine speed, the actual printing effect pattern depth to adjust the drying humidity.

Lianyungang Weihua Packaging Co., LTD., our company produces: aluminum foil bags, vacuum bags, high temperature cooking bags, color printing bags, Yin Yang bags. Welcome manufacturers to consult consult.