Method of fabricating an injection molded component
AssigneeWisconsin Alumni Research Foundation
InventorsLih-Sheng Turng, Xiaofei Sun
Life of this patent
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Abstract
A method of fabricating an injection-molded component is provided. The method includes the step of introducing pellets into an injection barrel of an injection molding machine. The pellets include a first supercritical fluid. The pellets are plasticized in the injection barrel and a second supercritical fluid is injected into the plasticized pellets. The second supercritical fluid and the plasticized pellets are mixed to form a mixed material. The mixed material is injected into a mold.
Claims18
A method of fabricating an injection-molded component, comprising the steps of:
- introducing pellets including a first supercritical fluid and polymeric material into an injection barrel of an injection molding machine;
- plasticizing the pellets within the injection barrel;
- introducing a second supercritical fluid into the plasticized pellets to form an injection material:
- and
- injecting the injection material into a mold;
- wherein:
- the first supercritical fluid and the second supercritical fluid are formed from different components;
- and
- the first supercritical fluid is formed from nitrogen and the second supercritical fluid is formed from carbon dioxide.
A method of fabricating an injection-molded component:
- comprising the steps of:
- providing a polymeric material;
- introducing a first supercritical fluid into the polymeric material;
- forming pellets from the polymeric material and the first supercritical fluid;
- introducing the pellets into an injection barrel of an injection molding machine:,
- plasticizing the pellets;
- introducing a second supercritical fluid into the plasticized pellets to form an injection material;
- and
- injecting the injection material into a mold;
- wherein:
- the first supercritical fluid and the second supercritical fluid are formed from different components;
- and
- the first supercritical fluid is formed from nitrogen and the second supercritical fluid is formed from carbon dioxide.
A method of fabricating an injection-molded component, comprising the steps of
- introducing pellets into an injection barrel of an injection molding machine, the pellets including a first supercritical fluid;
- plasticizing the pellets in the injection barrel;
- mixing a second supercritical fluid and the plasticized pellets to form a mixed material;
- and
- injecting the mixed material into a mold;
- wherein the first supercritical fluid and the second supercritical fluid are formed from different components.
Dependencies are inferred from the claim text.