Knowledge Popularization of Plastic Suction Series Paper (Part 2)
Introduction to Common Professional Terms in Plastic Suction
1. Plastic Suction: A plastic processing technique. The main principle is to heat and soften flat plastic hard sheets, then vacuum adsorb them onto the surface of a mold, and cool them to form a shape. It is widely used in plastic packaging, lighting, advertising, decoration, and other industries.
2. Plastic Suction Packaging: The general term for plastic products produced by plastic suction technology and packaged with corresponding equipment. Plastic suction packaging products mainly include: blister, tray, plastic suction box. Synonyms include: vacuum cover, blister cover, etc. Plastic suction packaging equipment mainly includes: plastic suction forming machine, punch press, sealing machine, high-frequency machine, edge folding machine. The packaged products can be classified as: card insertion, card suction, double blister, half blister, folded blister, three-fold blister, etc.
3. Blister: A transparent plastic made by plastic suction technology from flat plastic hard sheets into a specific convex shape, covering the product surface to protect and beautify it. Also known as blister cover, vacuum cover, plastic face mask. According to the form of the blister, it can be divided into: single blister, double blister, card insertion blister, and card suction blister.
4. Plastic Suction Box: A type of plastic suction product with a lid and a base. When the base and lid are connected, it is called a folded plastic suction box. When the base and lid are separate, it is called a top-bottom plastic suction box.
5. Plastic Suction Tray: Also known as plastic inner tray, made by plastic suction technology from plastic hard sheets into a specific concave shape, placing the product in the concave shape to protect and beautify it.
6. Flocked Inner Tray: A special type of plastic suction tray, with a layer of flocked material adhered to the surface of the ordinary plastic hard sheet, giving the tray a flocked texture and enhancing the grade of the packaged product.
7. Anti-static Tray: A special type of plastic suction tray made of material with a surface resistance value less than 10 to the power of 11 ohms. Mainly used for electronic and IT product plastic suction trays.
8. Plastic Suction Mold: The mold used in plastic suction forming production. The cheapest is gypsum mold, followed by electroplated copper mold, and the most expensive is aluminum mold. The mold has small holes for vacuum adsorption of the heated hard sheet to form plastic suction products.
9. Plastic Suction Forming: Also known as plastic suction, using a plastic suction forming machine to adsorb the heated and softened plastic hard sheet onto the mold surface, and cooling it to form a concave-convex plastic.
10. Plastic Suction Cutting: After plastic suction forming, the plastic product is cut into individual products by a punch press using a die. Also known as blanking, cutting, die cutting, etc.
11. Edge Folding: In plastic suction packaging, there is a type called card insertion packaging, which requires folding three edges of the blister to the back with an edge folding machine, so that in the next packaging process, the paper card can be inserted into the folded edge to form card insertion
packaging.
12. Pull Line: Unwanted raised lines (not on the mold) produced during plastic suction forming. It needs to be solved by modifying the mold (lowering the height and increasing smoothness) and adding an additional pressure mold (we call it the upper mold). When the pull line is too large, it is considered a defective product and cannot be used for high-end plastic suction packaging. However, in the field of component turnover trays, as long as the pull lines are neatly arranged and do not affect the usage function, they can be regarded as qualified products. Pull lines are also called: pull ridge, muscle, etc.
13. Scratch: Scratches on the surface of plastic suction products, especially on transparent blisters. If the scratch is too long or too large, the blister becomes a defective product and cannot be used for high-end packaging.
14. Crystal Point: A transparent defect produced during the production of plastic suction sheets due to fine dust in the air falling on the heated plastic material. Especially in the production of transparent plastic suction sheets, if the defect is too large or too numerous, it is considered a defective product.
15. Bubble: Bubbles in the plastic suction sheet produced due to air in the heated plastic material. Especially in the production of transparent plastic suction sheets, if the bubbles are too large or too numerous, it is considered a defective product.
16. Water ripples: During the production of plastic sheeting, due to differences in materials and processing techniques, the surface of the finished sheeting may have water-like ripples. This is especially true for transparent plastic sheeting; when the ripples are too large or too numerous, the product is considered defective. Generally, the thicker the sheeting, the more obvious the water ripples. Qualified PET materials rarely have water ripples, but most PVC materials do.
17. Heat-sealing: This is a plastic packaging process where a heat sealer is used to bond a paper card coated with plastic oil to a blister, creating a carded blister package.
18. High-frequency sealing: This is a plastic packaging process where a high-frequency machine generates high-frequency waves to bond two blisters together, forming a double blister package.
19. Ultrasonic sealing: This is a plastic packaging process where an ultrasonic machine generates ultrasonic waves to bond two blisters together, creating a double blister package. Unlike high-frequency sealing, ultrasonic sealing can bond not only PVC and PETG materials but also PET materials. Additionally, it does not cause electromagnetic damage to the packaged products, making it particularly suitable for the packaging of electronic products. The drawback is that ultrasonic sealing can only be done in intermittent dots and typically only along one straight edge at a time.