Types of plastic molding method
- Injection molding
- Blow molding
- Vacuum forming
- Calender molding
- Two-color molding
- Insert molding
It is the most popular method in plastic molding. It is a molding method to solidify plastics by pouring molten plastic raw material from a high-temperature cylinder into a mold and cooling it. It is the origin of the name that the appearance of being pushed into the mold resembles the action of "syringe".
It is a method of extruding resin softened by heat into a pipe shape, blowing compressed air and pressing it against a mold to cool. It is also called "hollow molding" to create hollow products such as plastic bottles and poly tanks. There are also other words called "blow molding".
Vacuum forming is a forming method of shaping a product by vacuum suction of plate-like plastic that is softened by heating, according to the mold. Because the surface of the plastic does not hit the mold, we are good at a line with softness. Also, by using "composite multilayer material" or "silk screen printing sheet", various surface conditions and decorations can be expressed.
This is a method of melting resin while kneading between heating rolls and forming plastics by stretching it to a certain thickness through several rolls. It is used to create flat plastic products such as "sheet" and "film", "leather" and "plate". The mold is unnecessary and it is decided by the size of the roller, but the point is that the facility is large and it is not suitable for small lot production.
This is a molding technology that uses two molds to thermally fuse two types of resin. It is a technique to bond two resin parts by "shape bonding" or "scientific bonding". It is possible to omit the trouble of separately resin molding and assembling (joining) later, and in many cases the functionality of the parts can be improved.
It is a molding method that injects resin around the metal parts inserted inside the mold and integrates the metal and the resin. Since plastic is an "insulator", it does not pass electricity, and by inserting metal parts inside it, high insulation performance is realized. In addition, it is a molding method that may be used for the purpose of increasing the strength by placing metal parts, or by embedding threads to make installation easier.
In short, "plastic molding", there are various forming methods. Each has its own characteristics, it is important to use properly according to the plastic product you want to manufacture.