[특허]Methods and apparatus for forming molded thermal plastic polymer components

Bounce Composites, LLC

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특허 상세정보

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Methods and apparatus for forming molded thermal plastic polymer components

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B29C-065/00 B32B-037/00 B29C-045/00 B29C-047/00 B29C-043/02 B29C-049/00 B29C-051/00 B29D-024/00 B29D-029/00 B29B-015/00 B29C-039/14 B29C-049/08 B29C-055/00 B29C-067/20 B29D-007/00 B29C-043/10 B28B-021/36 A01J-021/00 A01J-025/12 A21C-003/00 A21C-011/00 A23G-001/20 A23G-003/02 A23P-001/00 B28B-011/08 B29C-055/28
미국특허분류(USC)	156/285; 156/286; 156/382; 264/511; 264/553; 264/566; 264/568; 264/571; 425/504; 425/388
출원번호	US-0946816 (2010-11-15)
등록번호	US-8673106 (2014-03-18)
발명자 / 주소	Jolley, Mark W. Hedgecock, James
출원인 / 주소	Bounce Composites, LLC
대리인 / 주소	Fitch, Even, Tabin & Flannery LLP
인용정보	피인용 횟수 : 20 인용 특허 : 3

초록

Apparatus and methods of forming a molded thermoplastic piece are provided. The molded thermoplastic piece can have an outer layer of one or more sheets of reinforced flexible thermoplastic and a porous layer, such as cork. The outer layer can a mechanical bond with the porous layer.

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1. A method of forming a multi-dimensional reinforced composite structure, the method comprising: positioning a first layer of one or more sheets of flexible reinforced thermoplastic against a first mold;positioning a first layer of a porous material against the first layer of sheets of reinforced thermoplastic;positioning an inflatable bladder against the first layer of porous material;positioning a second layer of porous material against the inflatable bladder;positioning a second layer of one or more sheets of flexible reinforced thermoplastic against the second layer of porous material and on an opposite side thereof from the inflatable bladder;forming a common mold cavity using the first mold and a second mold with the first and second layers of flexible reinforced thermoplastic, the first and second layers of porous material, and the inflatable bladder therebetween;applying forming forces of heat, pressure and vacuum to the first layer of sheets and the second layer of sheets to urge the first layer of sheets of reinforced thermoplastic against the first mold, the first layer of porous material against the first layer of sheets with uniform pressure, the second layer of sheets of reinforced thermoplastic against the second mold, and the second layer of porous material away from the first layer of porous material and against the second layer of sheets with uniform pressure to form the reinforced composite structure having a hollow interior with the first and second layers of porous material facing each other, the forming forces causing the first layer of sheets to form to the shape of the first mold and mechanically bond with the first layer of porous material by partially melting into the first layer of porous material and the second layer of sheets to form the shape of the second mold and mechanically bond with the second layer of porous material by partially melting into the second layer of porous material. 2. The method of claim 1, wherein at least one of the first sheet of flexible reinforced thermoplastic and the second sheet of flexible reinforced thermoplastic includes multiple layers of sub-sheets. 3. The method of claim 2, wherein the first sheet of flexible reinforced thermoplastic and the second sheet of flexible reinforced thermoplastic each includes one of polypropylene, polyethylene, and polyethylene terephthalate comingled with reinforcing fibers. 4. The method of claim 3, wherein the step of applying heat, pressure and vacuum further includes the step of drawing a vacuum through the first and second layers of porous material to draw the adjacent sheet of flexible reinforced thermoplastic and the first and second layers of porous material toward the adjacent mold. 5. The method of claim 1, wherein the step of applying heat, pressure and vacuum further includes means for urging the first sheet of flexible reinforced thermoplastic and the first layer of porous material toward the first mold and for urging the second sheet of flexible reinforced thermoplastic and the second layer of porous material toward the second mold. 6. The method of claim 4, wherein the step of applying heat, pressure and vacuum further includes the step of filling the bladder with a heated fluid to urge the first sheet of flexible reinforced thermoplastic and the first layer of porous material toward the first mold and the second sheet of flexible reinforced thermoplastic and the second layer of porous material toward the second mold. 7. The method of claim 6, further including the step of removing the heated fluid from the bladder after urging the first sheet of flexible reinforced thermoplastic and the first layer of porous material toward the first mold and the second sheet of flexible reinforced thermoplastic and the second layer of porous material toward the second mold and then filling the bladder with a cooling fluid. 8. The method of claim 1, wherein the first and second layers of porous material are cork. 9. The method of claim 1, further including the step of joining peripheral edges of the first and second layers of flexible reinforced thermoplastic within the mold cavity. 10. The method of claim 9, further including the step of filling the hollow part with foam and mechanically bonding the foam to the first and second layers of porous material. 11. A method of forming a filled, multi-dimensional reinforced composite sandwich structure, the method comprising: positioning a first layer of one or more sheets of flexible reinforced thermoplastic against a first mold side;positioning a first foam bonding layer against the first layer of sheets of reinforced thermoplastic;positioning a second foam bonding layer over the first foam bonding layer;positioning a second layer of one or more sheets of flexible reinforced thermoplastic against the second foam bonding layer;moving one or both of the first mold side and a second mold side together to form a mold cavity with the first and second layers of flexible reinforced thermoplastic and first and second foam bonding layers therebetween;applying forming forces of at least one of heat, pressure and vacuum to the first and second layers of flexible reinforced thermoplastic and the first and second foam bonding layers to urge the first layer of reinforced thermoplastic and the first foam bonding layer toward the first mold side and the second layer of reinforced thermoplastic and the second foam bonding layer toward the second mold side, the forming forces causing the first layer of flexible reinforced thermoplastic to form to the shape of the first mold side and mechanically bond with the first foam bonding layer and the second layer of flexible reinforced thermoplastic to form the shape of the second mold side and mechanically bond with the second foam bonding layer and having a hollow interior with the first and second layers of foam bonding material facing each other;joining peripheral edges of the first and second layers of flexible reinforced thermoplastic to form a hollow composite structure; andfilling the hollow composite structure with a foam, the foam forming a mechanical bond with the first and second foam bonding layers. 12. The method of claim 11, wherein the first and second foam bonding layers comprise cork. 13. The method of claim 12, wherein the step of applying heat and pressure further includes the step of drawing a vacuum through the first and second layers of cork to draw the adjacent first and second sheets of flexible reinforced thermoplastic and the cork layers toward the adjacent mold sides. 14. The method of claim 13, wherein the step of applying heat and pressure further includes the step of filling a bladder with a heated fluid to urge the first and second sheets of flexible reinforced thermoplastic and the first and second layers of cork toward the adjacent first and second mold sides, the bladder being disposed between the first and second cork layers. 15. The method of claim 14, wherein the step of joining peripheral edges of the first and second layers of flexible reinforced thermoplastic includes positioning the peripheral edges within the mold cavity and joining the peripheral edges together during the step of applying forming forces. 16. The method of claim 1, wherein the first and second layers of porous material each have a density of between 100 and 150 kg/m3. 17. The method of claim 1, wherein the first and second layers of porous material each have a density of between 150 and 250 kg/m3.

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Methods and apparatus for forming molded thermal plastic polymer components

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Methods and apparatus for forming molded thermal plastic polymer components

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