Pull line: some undesirable line protrusions (not on the mold) produced during the production of blister molding, need to re-modify the mold (reduce the height and increase the roundness) and add an additional pressure mold (we call it the upper mold) to solve it. When the cable is too large, it is regarded as a defective product and cannot be used for high-end plastic blister packaging. However, in the field of parts turnover trays, as long as the cable is arranged neatly and does not affect the use function, it should be regarded as a qualified product.

Scratches: There are scratch marks on the plastic blister packaging, especially on the transparent blister packaging . If the marks are too long or too large, the plastic blister packaging will become a defective product and cannot be used for high-end packaging.

Crystal point: in the production process of blister sheet, due to the small dust in the air, falling on the heated plastic material, a kind of transparent flaw, especially in the production process of transparent blister sheet, this kind of flaw When it is too large or too much, it is regarded as defective.

Bubbles: In the production process of blister sheet, the heated plastic material contains air, so that the finished sheet produced contains bubbles. Especially in the production process of transparent blister sheet, the bubbles are too large. When it is too much, it is regarded as a defective product.

Water ripples: In the production process of blister sheets, due to different materials and processing techniques, the surface of the finished sheet produced has water ripples, especially in the production process of transparent blister sheets, this kind of water ripples are too large If it is too much, it is regarded as defective. In general, the thicker the sheet, the more obvious the water ripples. Qualified PET materials rarely have water ripples, but most PVC have water ripples.