The Main Reason For Common Quality Problems Of Pvc Film
- 2023-04-11 14:00:49-

1. Folds

(1) The spacing of long and narrow workpieces is too small; (2) The edges and corners around the upper surface of the backing plate are not chamfered; (3) The horizontal and vertical spacing of the workpieces is not in a straight line, which increases the air flow resistance; (4) The set temperature is too high; (5) The time to reach the set pressure is too long.

2. Whitening

(1) The set temperature is too high; (2) The time to reach the set pressure is too long; (3) The line type is inappropriate.

The edges are not sticky:

(1) The quality of the glue is not good; (2) The activation temperature of the glue is too high; (3) The temperature of the equipment cannot reach the activation temperature required by the edge of the workpiece; (4) The backing plate of the workpiece is not suitable; (5) PVC adhesive Poor performance or no adhesive; (6) The glue has expired or storage does not meet the requirements; (7) The glue is leaked or the method of glue is improper.

When quality problems occur, the process or parameters should be adjusted one by one for the above reasons, and records should be made. Do not adjust multiple process parameters or processes at the same time, otherwise the real cause of the quality problem will be difficult to identify, and it will be difficult to formulate and adjust the production environment. Process standards provide an objective basis.


Remark:

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