- published: 24 Nov 2015
- views: 413343
Injection molding (British English: moulding) is a manufacturing process for producing parts from both thermoplastic and thermosetting plastic materials. Material is fed into a heated barrel, mixed, and forced into a mold cavity where it cools and hardens to the configuration of the cavity. After a product is designed, usually by an industrial designer or an engineer, molds are made by a moldmaker (or toolmaker) from metal, usually either steel or aluminum, and precision-machined to form the features of the desired part. Injection molding is widely used for manufacturing a variety of parts, from the smallest component to entire body panels of cars.
1847 Jons Jacob Berzelius produces first condensation polymer, polyester, from glycerin (propanetriol) and tartaric acid
Jons Jacob Berzelius is also credited with originating the chemical terms "catalysis," "polymer," "isomer," and "allotrope," although his original definitions differ dramatically from modern usage. For example, he coined the term "polymer" in 1833 to describe organic compounds which shared identical empirical formulas but which differed in overall molecular weight, the larger of the compounds being described as "polymers" of the smallest. According to this (now obsolete) definition, glucose (C6H12O6) would be a polymer of formaldehyde (CH2O).
Plastic Injection Molding
Plastic Injection Molding
plastic injection molding
How It's Made Plastic injection molds
Design for Manufacturing Course 5: Injection Molding - DragonInnovation.com
Injection Moulding
Injection moulding of 72 screw caps in less than 3 secs
How Injection Molding works
DIY injection molding how-to
Practical Injection Molding - Basic Technician Training