coinjection molding

coinjection molding

[‚kō·in′jek·shən ‚mōld·iŋ]
(engineering)
A technique used in polymer processing whereby two or more materials are simultaneously injected into the cavity of a mold. Also known as sandwich molding.
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References in periodicals archive ?
In the coinjection molding process, two different kinds of polymer melt are injected into a mold sequentially or simultaneously, such that the core material is embedded in the skin material, forming an encapsulated skin/core structure product.
com) demonstrated four-cavity coinjection molding of PP/ EVOH/PP fruit cups in 3.
Coinjection molding is used to mold multilayered articles with laminated wall structures.
Coinjection molding is an exciting new process for the molding of liquid silicone rubber (LSR) that opens up new possibilities.
Presma has developed a new press expressly for coinjection molding.
The advantages of coinjection molding are offset by the high cost and complexity of a machine requiring two or more independent reciprocating screws.
Demand for over-molding and coinjection molding of soft-touch polymers onto other polymers has increased, and these applications typically require numerous color changes.
Both products, molded by Bemis Manufacturing, are said to be the first applications of coinjection molding to large parts where a recycled engineering material (ABS) is used in the core.
Coatings composed of thermoplastic, pseudothermoplastic, and uncured thermoset materials can be injected or extruded into a mold, where they act as paints in compression injection molding and coinjection molding.
The Tandem system can accommodate two-component or coinjection molding.
Using specialized coinjection molding techniques and tooling, and a tailored Kraton G polymer-based Evoprene TPE compound, the collaborative effort has resulted in the capability to create soft touch on flexible products that meet demanding performance requirements.