General Processes

BLOW MOLD - general sense

Blowing process is mainly used for making thin-walled container. A cylindrical plastic material called porison extruded as soon as possible and clamped at the end of the mold. At the time the mold is closed porison closed porison cut and due to air pressure, the material pressed into the mold surface. mold must have adequate airway smooth the surface of the product. As soon as the product is cool enough, the mold is opened and the product diketuarkan.

Blow molding process similar to the process of making the Framework bottle glass industry. A pipe made of extruded thermoplastic material induction into the open mold. Both ends of the plastic pinched and closed when the mold is closed and pressed air flowed into the empty pipe metatui pipe in the center of the head mold. Compressed air is developing plastics that are attached to the walls of the mold. Setetah in chill for a while, as long as the plastic is still under pressure, the air pressure is lowered and the mold is opened. Bottles are removed from the mold and machine prepared for the next cycle. For some types of plastic, bottles must be cooled to room temperature. The top and bottom of the bottle and then cut to dispose of plastic that is outside of the product but is still in the mold area.

Packaging for cosmetics, bottles, petampung, heating ducts in motor vehicles, botot botot liquid detergent and hot water are examples of blow molding products. Raw materials such as polietiten, polypropylene and can be used under the Framework selutosa asetan pross this blow-molded.

This species is also a continuous process in nature and are very often used to mold with a product that has a thin thickness and also with a thin neck such as bottles, cisterns, etc. Sort of dough plastic pipe with a predetermined length and then extruded. One side of the pipe is then laid on inflatable pin. Then the two parts of the blow mold sealed. Then betekanan air is then blown into the pipe before the pipe which then expands to follow the shape of the mold. Setetah cooling down, then the two parts of the blow mold is opened, and the product is issued. Most thermoplastics such as LDPE, HDPE, PP, PVC, PET, Polycarbonate can be processed using this technique.