Thick sheet thermoforming Once a product has defects and its quality does not meet the standard, it cannot be used. What aspects should we pay special attention to in order to control product quality? Let's take a brief look together with the editor!
1. Bubbles: When producing thick sheet thermoforming, there will be air in the heated plastic material, and bubbles are inevitable in the sheet. In the production of relatively transparent thick sheet thermoforming, if there are too many bubbles, it is considered defective.
2. Scratches: Thick sheet thermoforming with scratches, especially on transparent products, these marks are too obvious to be considered non-defective.
3. Drawing lines: Production of Thick sheet thermoforming Lines should not be prominent, and the mold should be smooth. If this phenomenon occurs, the mold should be modified or a pressure mold should be added to enhance the smoothness of the mold. Excessive drawing lines will affect the appearance and will become defective products.
4. Water ripples: Due to different thick sheet thermoforming processing technologies, the finished products will have various problems. If there are water ripples on the surface, and the water ripples are too large and too many, it is defective. The thicker the thick thermoforming sheet, the more obvious the water ripples. However, most thick PVC sheets in our lives have water ripples. As long as they are not particularly serious and slight ones do not affect the use, they will pass.
5. Crystal points: When producing thick sheet thermoforming products, the heated plastic material will attract tiny dust in the air, producing transparent defects, especially in transparent Thick sheet thermoforming Products, when such defects are too large or too many, they are considered defective.