Maro Publications

Blow Molding

Notes

*11/21/2013
from 9/4/2012   

Maro Topics

Comments

Patent Abstracts

Patent Titles

Blow Molding Applications

Blow Molding Containers

Blow Molding: Molds

Blow Molding: Parison

Bottles

Extrusion Blow Molding

Fuel Tanks

Injection Molding: Blow Molding

Preforms

Processing

Stretch Blow Molding

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Notes

2. Blow molding (also known as blow moulding or blow forming) is a manufacturing process by which hollow plastic parts are formed. In general, there are three main types of blow molding: extrusion blow molding, injection blow molding, and stretch blow molding. The blow molding process begins with melting down the plastic and forming it into a parison or preform. The parison is a tube-like piece of plastic with a hole in one end in which compressed air can pass through.

The parison is then clamped into a mold and air is pumped into it. The air pressure then pushes the plastic out to match the mold. Once the plastic has cooled and hardened the mold opens up and the part is ejected.

(Wikipedia, Blow Molding, 6/4/2012)

1. “Nowadays, bottle blow-molding machines are widely applied to fabrications of various plastic bottles (such as PET bottles). A traditional bottle blow-molding machine comprises various different mechanical parts, such as a structure for opening and closing molds, a structure for feeding material and blowing bottles, a structure for ejecting bottles, a structure for conveying and etc., wherein the structure for opening and closing molds can be designed and driven by selectively using various different power sources (such as motor, pneumatic cylinder, hydraulic cylinder or cam).” [Tsay, Chen and, US Patent 8,257,076 (9/4/2012)]

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Roger D. Corneliussen
Editor
www.maropolymeronline.com

Maro Polymer Links
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Copyright 2012 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen
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* Date of latest addition; date of first entry is 9/4/2012.