Plastic containers with folded-over internal layers and methods for making same
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B65D-023/00
B29D-005/04
출원번호
US-0484548
(1983-04-13)
발명자
/ 주소
McHenry, Robert J.
Pfutzenreuter, III, Henry
Tung, Thomas T.
Vella, Jr., John
출원인 / 주소
American Can Company
대리인 / 주소
Audet, Paul R.
인용정보
피인용 횟수 :
40인용 특허 :
2
초록▼
Injection molded and injection blow molded multi-layer plastic articles, parisons and containers are provided, which, in preferred embodiments are substantially rigid and have at least three layers wherein a portion of the marginal end portion of their internal layer is folded over within the margin
Injection molded and injection blow molded multi-layer plastic articles, parisons and containers are provided, which, in preferred embodiments are substantially rigid and have at least three layers wherein a portion of the marginal end portion of their internal layer is folded over within the marginal end portion of the side wall of the article, preferably in the flange if the article is a parison or container. The articles folded over portion can be toward the inside or the outside of the side wall. The articles, parison, and containers can be open-ended, or closed, for example, with end closures double seamed thereto or flexible lids secured thereto by an adherent, or heat seal, or other suitable means. The folded over portion and any not folded over portion of the internal layer preferably extends substantially uniformly into the marginal end portion of the side wall.
대표청구항▼
1. An injection moled, multi-layer plastic article having a multi-layer integral side wall which has an internal layer, a terminal end portion of which is folded over within the side wall. 2. An injection molded, multi-layer plastic parison for forming a blow molded container wherein said parison ha
1. An injection moled, multi-layer plastic article having a multi-layer integral side wall which has an internal layer, a terminal end portion of which is folded over within the side wall. 2. An injection molded, multi-layer plastic parison for forming a blow molded container wherein said parison has a multi-layer integral side wall which has an internal layer, a portion of which is folded over within the side wall. 3. An injection blow molded, multi-layer plastic article having a multi-layer integral side wall which has an internal layer, a portion of which is folded over within the side wall. 4. An injection blow molded, multi-layer rigid plastic container having a multi-layer integral side wall which has an internal layer, a portion of which is folded over within the side wall. 5. The article of claim 1 wherein the side wall has a marginal end portion and the folded over portion is within the marginal end portion of the side wall. 6. The article of claim 2 wherein the side wall has a marginal end portion and the folded over portion is within the marginal end portion of the side wall. 7. The article of claim 3 wherein the side wall has a marginal end portion and the folded over portion is within the marginal end portion of the side wall. 8. The article of claim 4 wherein the side wall has a marginal end portion and the folded over portion is within the marginal end portion of the side wall. 9. The article of claim 5 wherein the folder over portion is folded towards the inside of the container. 10. The article of claim 5 wherein the folder over portion is folded towards the outside of the container. 11. The article of claim 1 wherein the folded over portion is folded towards the inside of the container. 12. The article of claim 1 wherein the folded over portion is folded towards the outside of the container. 13. The article of claim 5 wherein the marginal end portion includes an outwardly disposed flange and at least a part of the folded over portion of the internal layer is in the flange. 14. The article of claim 5 wherein article has an end closure double seamed thereto, and at least a portion of the marginal end portion is in the double seam. 15. The articles of claim 5 wherein the article has a flexible lid sealed onto a portion of the marginal end portion. 16. The article of claim 1 wherein the internal layer is an oxygen barrier material. 17. The container of claim 4 wherein the side wall has a terminal end, the internal layer has a leading edge and the plane along the leading edge of the internal layer is substantially unbiased relative to the axis of the container. 18. An injection molded, multi-layer plastic article, having a multi-layer integral side wall comprised of an outside surface layer, and inside surface layer, and an internal layer between said inside and outside surface layers, wherein the side wall has a terminal end portion and the internal layer has a terminal end, and wherein a portion of the terminal enddportion of internal layer is folded over within the side wall, whereby the terminal end of the unfolded portion of the internal layer and the fold line of the folded over portion of the internal layer are located in the terminal end portion of the side wall. 19. The article of claim 18 wherein the folded over portion is folded towards the inside of the container. 20. The article of claim 18 wherein the folded over portion is folded towards the outside of the container. 21. The article of claim 13 wherein the folded over portion is folded toward the inside of the container. 22. The article of claim 13 wherein the folded over portion is folded toward the outside of the container. 23. The article of claim 14 wherein the folded over portion is folded toward the inside of the article. 24. The article of claim 14 wherein the folded over portion is folded toward the outside of the article. 25. The article of claim 18 wherein the internal layer is an oxygen barrier material. 26. The article of claim 16 wherein the side wall includes inside and outside surface layers comprised of polyolefin, the internal layer is an oxygen barrier material and wherein a layer of adherent material is adhered on each face of the ethylene vinyl alcohol polymer layer. 27. The article of claim 26 wherein the polyolefin is polypropylene. 28. The article of claim 26 wherein the polyolefin comprises a blend of polyethylene and polypropylene, and the layers of adherent material are comprised of a blend of ethylene vinyl acetate copolymer and a graft copolymer of polyethylene and an unsaturated. fused ring carboxylic acid anhydride. 29. The article of claim 26 wherein the adhesive material is selected from the consisting of a blend of ethylene vinyl acetate copolymer and a graft copolymer and, a maleic anhydride grafted polyolefin. 30. The article of claim 26 wherein the polyolefin comprises a copolymer of proplyene and ethylene. 31. The article of claim 26 wherein the polyolefin is polyethylene. 32. The article of claim 26 wherein the polyolefin is polypropylene. 33. The article of claim 26 wherein one surface layer is polypropylene and the other surface layer is polyethylene. 34. The container of claim 26 wherein at least one of the surface layers comprises a blend of polyethylene and polypropylene. 35. The container of claim 26 wherein at least one of the surface layers comprises a copolymer of propylene and ethylene. 36. The container of claim 4 wherein the side wall has a terminal end, and the internal layer has a leading edge which is substantially unbiased relative to the terminal end of the side wall. 37. The container of claim 14 wherein the side wall has a terminal end, the internal layer has a leading edge and the leading edge of the internal layer is substantially unbiased relative to the terminal end of the side wall. 38. The container of claim 14 wherein the side wall has a terminal end, the internal layer, has a leading edge and the plane along the leading edge of the internal layer is substantially unbiased relative to the axis of the container. 39. The container of claim 15 wherein the side wall has a terminal end, the internal layer has a leading edge and the plane along the leading edge of the internal layer is substantially unbiased relative to the axis of the container. 40. An injected molded multi-layer container wherein the container has a multi-layer integral side wall having an internal layer and having a marginal end portion, the internal layer having in said marginal end portion a leading edge whose plane is substantially unbiased relative to the axis of the container said leading edge being comprised of the fold line of a folded over portion of said internal layer. 41. An injection molded multi-layer plastic article having a multi-layer integral side wall which has a terminal end and which has an internal layer whose terminal end is more removed from the terminal end of the article than is another adjacent directionally related marginal end portion of the internal layer. 42. An injection molded multi-layer plastic article having a multi-layer side wall which has an internal layer having a fold line from which there extends a folded over portion, and a terminal end at the end of the folded over portion and which is more removed than the fold line is from the terminal end of the article. 43. An injection molded-multi-layer plastic article having a terminal end, and a multi-layer integral side wall which has an internal layer having a fold line and a terminal end, wherein there is less variation in the distance from the fold line to the terminal end of the article than from the terminal end of the internal layer to the terminal end of the article. 44. An injection molded multi-layer plastic article having a terminal end, and a multi-layer integral side wall which has an internal layer having a marginal end portion and a terminal end, wherein a portion of the marginal end portion is folded over along a fold line, such that the folded over portion lies near another portion of the internal layer, and the terminal end of the internal layer is more removed than the fold line is from the terminal end of the article. 45. The article of claim 41 wherein the article is a container having a marginal end portion which includes a flange, and the terminal end of the internal layer is located in the flange. 46. The article of claim 42 wherein the article is a container having a marginal end portion which includes a flange, and the fold line is in the flange. 47. The article of claim 43 wherein the article is a container having a marginal end portion which includes a flange, and the fold line is in the flange. 48. The article of claim 44 wherein the article is a container having a marginal end portion which includes a flange, and the fold line is in the flange. 49. The article of claim 41 wherein the article is a container having a marginal end portion and the terminal end of the internal layer is located in the marginal end portion of the container. 50. The article of claim 42 wherein the article is a container having a marginal portion and the terminal end of the internal layer is located in the marginal end portion of the container. 51. The article of claim 43 wherein the article is a container having a marginal end portion and the terminal end of the internal layer is located in the marginal end portion of the container. 52. The article of claim 44 wherein the article is a container having a marginal portion and the terminal end of the internal layer is located in the marginal end portion of the container. 53. An injection-molded, multi-layer plastic article having a multi-layer integral wall which has an internal layer, a portion of which is folded over within the wall. 54. An injection blow-molded, multi-layer plastic article having a multi-layer integral wall which has an internal layer, a portion of which is folded over within the wall. 55. An injection-molded, multi-layer plastic parison for forming a blow molded container wherein said parison has a multi-layer integral wall which has an internal layer, a portion of which is folded over within the wall. 56. An injection blow-molded, multi-layer plastic parison for forming a blow molded container wherein said parison has a multi-layer integral wall which has an internal layer, a portion of which is folded over within the wall. 57. An injection-molded, multi-layer plastic container having a multi-layer integral wall which has an internal layer, a portion of which is folded over within the wall. 58. An injection blow-molded, multi-layer plastic container having a multi-layer integral wall which has an internal layer, a portion of which is folded over within the wall.
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이 특허에 인용된 특허 (2)
Langecker Erhard (Hohbuschener Weg 5 D-5882 Meinerzhagen 1 DT), Method for central injection molding.
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Kudert, Frederick G.; Latreille, Maurice G.; McHenry, Robert J.; Nahill, George F.; Pfutzenreuter, III, Henry; Tennant, William A.; Tung, Thomas T.; Vella, Jr., John, Apparatus for injection molding and injection blow molding multi-layer articles.
Sanfilippo, James J.; Sanfilippo, John E.; Skaggs, Jeanne M.; Soria, Francisco Javier; Radenovic, Milorad; Wyslotsky, Bohdan; Georgelos, Paul; Montefusco, Pat; Speer, Roy; Forowycz, Roman, Flexible package and method of making same.
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Sanfilippo, John E.; Sanfilippo, James J.; Skaggs, Jeanne M.; Speer, Roy, Flexible, stackable container and method and system for manufacturing the same.
Sanfilippo, John E.; Sanfilippo, James J.; Skaggs, Jeanne M.; Speer, Roy, Flexible, stackable container and method and system for manufacturing the same.
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Sanfilippo, John E.; Sanfilippo, James J.; Skaggs, Jeanne M.; Speer, Roy, Flexible, stackable container including a lid and package body folded from a single sheet of film.
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Sanfilippo, John E.; Sanfilippo, James J.; Skaggs, Jeanne M.; Speer, Roy, Flexible, stackable sealed package having corner seals and formed from a sheet of film.
Nahill Thomas E. ; Krishnakumar Suppayan M. ; Collette Wayne N., Method for preventing uncontrolled polymer flow in preform neck finish during packing and cooling stage.
Kudert Frederick G. ; Latreille Maurice G. ; McHenry Robert J. ; Nahill George F. ; Pfutzenreuter ; III Henry ; Tennant William A. ; Tung Thomas T. ; Vella ; Jr. John, Methods and apparatus for injection molding and injection blow molding multi-layer plastic and the articles made thereby.
Kudert Frederick G. (Niles IL) Latreille Maurice G. (Batavia IL) McHenry Robert J. (St. Charles IL) Nahill George F. (Crystal Lake IL) Pfutzenreuter ; III Henry (Loma CA) Tennant William A. (Schaumbu, Methods for injection molding and injection blow molding multi-layer articles.
Richards, Guy; Rashid, A. B. M. Bazlur; Knoll, Robert W.; Emre, Sahin; Curie, Kevin James; Davidson, Randolph Lee, Polypropylene container and process for making the same.
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