What Is Blow Molding
Blow molding is a rapidly developing processing method for hollow plastic products. Blow molding is a manufacturing process in which molten plastic is blown into so that it contacts tht mold surface and cools to form a plastic product. Blow molded products are not only beautiful in appearance, but also durable. Meanwhile, the plastic surface is not compressed during the process, which can reduce product deformation and shrinkage, and it suitable for the production of products of various specifications and shapes.
HDPE Blow Molding
Plastic resins suitable for blow molding processing method include Polyethylene PE, PVC resin, polypropylene PP, polyester resins, etc. Among them, HDPE has become the most widely used plastic resins in blow molding plastic products due to its good thermal stability and various modified products. The blow molding plastic products is generally divided into small blow molding, medium blow molding and large blow molding based on the volume of the container. This is also a common method for the classification of HDPE blow molding grade.
HDPE Used for Small Blow Molding
HDPE Used in Medium Blow Molding
HDPE Used in Large Blow Molding
Common types of blow molding plastic parts
Blow molding of bottles is a common application. Common bottle types include cosmetic bottles, shampoo bottles, shower gel bottles, water bottles, juice bottles, edible oil bottles, etc. Due to the high temperature resistance of blow molded bottles, they can also be used to load flammable items such as chemical raw materials and fuels.
Blow molding barrels can be used as large containers and are widely used in industrial production, agricultural irrigation, advertising and trading, as well as other fields. The large blow molding containers has stable performance and can withstand the overlapping of heavy objects, punctures, and corrosion in harsh environments.
The production process of blow molded toys is convenient and suitable for mass production. Blow molded toys can be made into various shapes and colors and are not easily broken even after being squeezed or bumped.
Blow molding products are widely used in the medical field. For example, medical test tubes, injection straws, antlers for infusion, measuring cups, etc. The advantage of HDPE blow molding products is that they have good sealing properties and will not leak or contaminate chemicals.