The heat shrinkable packaging machine product shrinks after the weak sealing line: the sealing line of the shrink film is easily damaged or a fine hole hole.

solution:

Low the temperature of the sealing machine heat sealing knife

The sealing line is incorrect, the sealing line height should be half of the packaging height.

The pressure of the sealing frame is not average, although the horizontal position of the sealing frame is required

The thermal sealing knife or sealing base may be dirty, clean the hot sealing knife or sealing base

Sealing base of insulating pad or insulation rubber stickers, can be replaced with insulation pad or insulation stickers

The sealing time is too short, the sealing pressure disappears before the sealing line is not completely combined, and the sealing time can be transferred.