The Differences of Process of Blister, Blow and Injection Molding Pallets
Blow molding
The tubular plastic parison obtained by extruding is placed in the split mold while it is hot. After the mold is closed, air is compressed in the parison to inflate the plastic parison and tightly adhere to the inner wall of the mold. Then, it releases from the mold after cooling and a variety of hollow products come out. The main products are: nylon casing film, bottles, jars, nylon tubes, etc.
Injection molding
The tubular plastic parison obtained by extruding is placed in the split mold while it is hot. After the mold is closed, air is compressed in the parison to inflate the plastic parison and tightly adhere to the inner wall of the mold. Then, it releases from the mold after cooling and a variety of hollow products come out. The main products are: nylon casing film, bottles, jars, nylon tubes, etc.
Blister molding
After the flat plastic hard sheet is heated and softened, it is vacuum-adsorbed to the surface of the mold, and then formed after cooling. It saves raw and auxiliary materials, is light in weight, and is convenient to transport. The products are generally relatively shallow, such as: basins, flat plates and other products with large and relatively shallow calibers.
Advantages of plastic pallets:
1. Durability
Plastic pallets are lighter than the wooden or metal pallets of the same size, so the weight and cost of transportation can be reduced. Plastic pallets last about 10 times longer than wooden pallets.
2. Hygiene
Plastic pallets can be washed and reused. The US Department of Agriculture is promoting companies to use plastic pallets to carry products. Besides, now the U.S. Environmental Protection Agency also realizes that plastic pallets should be the first choice of the U.S. Department of Energy and the U.S. Department of Defense. At present, the European Union has issued a decree that all food, beverages, and medical transportation must use plastic pallets.
3. Environmental protection
Plastic pallets are environmentally friendly products because they can all be recycled and reused, which greatly reduces waste and disposal costs. It can prevent the loss of thousands of acres of forest every year.
What are the differences between blister molding and injection molding process?
Injection pallets
1. Different production process
The blister molding product is formed by heating the sheet, then pushing the sheet out and bonding the sheet with the mold by suction, and finally cooling and forming. Injection molding uses pressure to accumulate the plastic after the hot melt on the injection mold, and then cooling and molding.
2. Different types of uses
Blister moldingis mostly used in electronic products, digital products, toys, stationery, hardware accessories, etc. Blister molding products are mostly in blister boxes, blister shells, blister trays, blister covers etc.. Injection molding is usually used in the production of logistics plastic pallets, such as mobile phone shells, computer shells, plastic cups, mouse shells, etc..
Blister molding turnover tray
3. Different production cycle
Blister molding are a thermally flexible production mode, with a short production cycle and low mold cost. Multiple molds can be used to blister molding multiple products at a time. While injection molds have a longer production cycle, which is composed of multiple products from a single model. Co-produced products do not need to be separated into products directly.
4. Different practical application
The product made by Blister molding in the form of item turnover and packaging. And the products made by injection molding is in the form of an article, which is a warehousing logistics product. It has the characteristics of durability, easy cleaning, long life and large bearing capacity. The same is that the two are plastic products.
