Coinjection: Difference between revisions
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{{Short description|Polymer injection technology}} |
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'''Coinjection''' is a [[polymer injection]] technology in which different [[polymer]]s are injected into the same [[mold]]. |
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'''Co-injection''' is a [[polymer]] injection technology in which different polymers are injected into the same [[Molding (process)|mold]]. This specialized process can be used to improve part performance and cost while minimizing cycle time and production volume.<ref name="moldmasters">{{Cite web|title=Co-Injection {{!}} Mold Masters|url=https://www.moldmasters.com/products/co-injection|access-date=2021-05-19|website=www.moldmasters.com}}</ref> Co-injection can be used to extend shelf life, improve production efficiencies, and allow for greater design flexibility depending on the materials used and the application.<ref name="moldmasters"/> |
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Reasons for using |
Reasons for using co-injection are: |
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# reducing cost by using a cheaper fill material as the non-visible core of a product{{ref|cheap}} |
# reducing cost by using a cheaper fill material as the non-visible core of a product{{ref|cheap}} |
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# combining desired properties of polymers, such as colour (the differently |
# combining desired properties of polymers, such as colour (the differently colored parts in car tail lights), feel (soft-touch toothbrush) or mechanical properties. |
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# alter the density and elasticity of the final project making it either float in water or shock absorbent. |
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Despite these advantages, |
Despite these advantages, co-injection requires machinery that is more expensive and difficult to maintain than standard single injection machines. The coinjection process also has difficulty with complex geometric shapes.{{ref|machine}} |
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==References== |
==References== |
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{{Reflist}} |
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| ⚫ | # {{note|cheap}}{{cite web | title=What's Behind the Chrome Plate? Coinjection & Gas-Assist Molding | work=Plastic Technology | url=http://www.plasticstechnology.com/articles/199905cu2.html | accessdate=2005-08-31 | archive-url=https://web.archive.org/web/20050907035314/http://www.plasticstechnology.com/articles/199905cu2.html | archive-date=2005-09-07 | url-status=dead }} |
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| ⚫ | # {{note|machine}}{{cite web | title=Coinjection's New Look: Two Screws, One Barrel | work=Plastic Technology | url=http://www.plasticstechnology.com/articles/200112cu1.html | accessdate=2005-08-31 | archive-url=https://web.archive.org/web/20051227055128/http://www.plasticstechnology.com/articles/200112cu1.html | archive-date=2005-12-27 | url-status=dead }} |
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[[Category:Plastics industry]] |
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{{polymer-stub}} |
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Latest revision as of 16:15, 17 August 2023
Co-injection is a polymer injection technology in which different polymers are injected into the same mold. This specialized process can be used to improve part performance and cost while minimizing cycle time and production volume.[1] Co-injection can be used to extend shelf life, improve production efficiencies, and allow for greater design flexibility depending on the materials used and the application.[1]
Reasons for using co-injection are:
- reducing cost by using a cheaper fill material as the non-visible core of a product[1]
- combining desired properties of polymers, such as colour (the differently colored parts in car tail lights), feel (soft-touch toothbrush) or mechanical properties.
- alter the density and elasticity of the final project making it either float in water or shock absorbent.
Despite these advantages, co-injection requires machinery that is more expensive and difficult to maintain than standard single injection machines. The coinjection process also has difficulty with complex geometric shapes.[2]
References
[edit]- ^ a b "Co-Injection | Mold Masters". www.moldmasters.com. Retrieved 2021-05-19.
- ^ "What's Behind the Chrome Plate? Coinjection & Gas-Assist Molding". Plastic Technology. Archived from the original on 2005-09-07. Retrieved 2005-08-31.
- ^ "Coinjection's New Look: Two Screws, One Barrel". Plastic Technology. Archived from the original on 2005-12-27. Retrieved 2005-08-31.
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