Injection-molded, mineral-filled articles and processes for making the same
First Claim
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1. A process for preparing an injection-molded cutlery, the process comprising providing a mixture of a filler and a polymer, wherein the mixture is from about 30 to about 70 wt % filler and from about 30 to about 70 wt % polymer;
- heating the mixture to its appropriate melting temperature, injecting the mixture into a mold, cooling the mixture to form the cutlery, and ejecting the cutlery from the mold.
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Abstract
A process for preparing an injection-molded cutlery The process includes providing a mixture of a filler and a polymer The mixture comprises from about 30 to about 70 wt. % filler and from about 30 to about 70 wt. % polymer The mixture is heated to its melting temperature and then injected into a mold The mixture is cooled so as to form the cutlery The cutlery is ejected from the mold
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Citations
28 Claims
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1. A process for preparing an injection-molded cutlery, the process comprising
providing a mixture of a filler and a polymer, wherein the mixture is from about 30 to about 70 wt % filler and from about 30 to about 70 wt % polymer; -
heating the mixture to its appropriate melting temperature, injecting the mixture into a mold, cooling the mixture to form the cutlery, and ejecting the cutlery from the mold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 27, 28)
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23. A process for forming cutlery, comprising
providing a mixture from about 30 to about 70 wt. % filler and from about 30 to about 70 wt % polymer, providing an injection-molded machine with a cavity and a rotating screw, heating the mixture in the injection molding machine to an appropriate temperature to melt the mixture; -
moving the rotating screw in a first direction so as to draw the mixture into the cavity of the injection molding machine, moving the rotating screw in a direction generally opposite to the first direction to inject the mixture into a mold from the cavity, cooling the mixture to an appropriate temperature in the mold so as to form the cutlery, opening the mold, and ejecting the cutlery from the mold
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26. A cutlery comprising a filler and a polymeric material, the cutlery including from about 30 to about 70 wt % filler and from about 30 to about 70 wt % polymer, wherein the filler is talc, mica, calcium carbonate, barium sulfate, stone dust, or a combination thereof
Specification