[특허]Method for texturing a film

CTI Industries, Corporation

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특허 상세정보

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Method for texturing a film

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B32B-031/06 B32B-031/22 B32B-031/30
미국특허분류(USC)	156/209; 156/219; 156/244.22; 156/244.27
출원번호	US-0042955 (2002-01-08)
발명자 / 주소	Anderson,Brent Schwan,Howard W.
출원인 / 주소	CTI Industries, Corporation
대리인 / 주소	Everest Intellectual Property Law Group
인용정보	피인용 횟수 : 23 인용 특허 : 69

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The present invention provides a method for treating a surface of a layered polymeric structure. The method includes the steps of: (1) providing a first sheet of material, (2) providing a second sheet of material, (3) positioning the first sheet or the second sheet to overlap at least a portion of the other sheet to define an interference zone, (4) directing a first polymeric material into the interference zone to adhere the first sheet to the second sheet to form the layered structure; and (5) texturing a surface of the first sheet or the second sheet t...

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We claim: 1. A method for forming a fluid container comprising: providing a first non-molten polymeric sheet of material; providing a second non-molten polymeric sheet of material; positioning the first non-molten sheet or the second non-molten sheet to overlap at least a portion of the other sheet to define an interference zone; directing a first molten polymeric material into the interference zone to adhere the first non-molten sheet to the second non-molten sheet to form the layered structure; texturing a surface of the first non-molten sheet or the second non-molten sheet utilizing a chill roll to form a pattern on the surface, the pattern being dimensioned to form fluid pathways on the surface to assist in removing fluid from the surface; forming a container having opposed sidewalls from the layered structure, the opposed sidewalls having fluid contacting surfaces facing a chamber of the container and having the fluid pathways positioned on the fluid contacting surfaces of each of the opposed sidewalls, and providing an access member fixedly attached to one of the sidewalls for providing fluid access to the chamber. 2. The method of claim 1 wherein the first non-molten polymeric sheet is a monolayer structure. 3. The method of claim 1 wherein the first non-molten polymeric sheet is a multiple layer structure. 4. The method of claim 1 wherein the first non-molten polymeric sheet is selected from the group consisting of polyolefins, ethylene and vinyl acetate copolymers, ethylene copolymerized with carboxylic acids having from 3 to 20 carbons and ester and anhydride derivatives thereof, ethylene and vinyl alcohol copolymers, polyamides, polyesters, polyvinyl vinyl chloride, PVDC and elastomers. 5. The method of claim 4 wherein the polyolefins are selected from homopolymers and copolymers. 6. The method of claim 5 wherein the copolymers are selected from copolymers of ethylene and α-olefins having from 3 to 20 carbons. 7. The method of claim 3 wherein the multiple layered structure comprises a first layer of an ethylene and α-olefin copolymer and a second layer of an ethylene and vinyl alcohol copolymer. 8. The method of claim 4 wherein the second non-molten polymeric sheet is selected from the group consisting of polyolefins, ethylene and vinyl acetate copolymers, ethylene copolymerized with carboxylic acids having from 3 to 20 carbons and ester and anhydride derivatives thereof, ethylene and vinyl alcohol copolymers, polyamides, polyesters, polyvinyl vinyl chloride and elastomers. 9. The method of claim 8 wherein the second non-molten polymeric sheet is a polyamide. 10. The method of claim 9 wherein the polyamide is selected from nylon 6,6, nylon 6, and nylon 6,12. 11. The method of claim 1 wherein the step of directing a first polymeric material comprises the step of extruding a molten polymeric material. 12. The method of claim 11 wherein the molten polymeric material is a polyolefin. 13. The method of claim 11 wherein the molten polymeric material is a homopolymer of ethylene. 14. The method of claim 1 wherein the step of texturing comprises the step of contacting the first sheet or the second sheet with a surface having a pattern. 15. The method of claim 14 wherein the surface is provided on a roll. 16. The method of claim 15 wherein the surface is provided on the chill roll. 17. The method of claim 15 wherein the surface is provided on a backup roll. 18. The method of claim 14 wherein the pattern is carried on two rolls. 19. The method of claim 15 wherein the pattern extends outward from the surface of the roll. 20. The method of claim 15 wherein the pattern extends inward from the surface of the roll. 21. The method of claim 15 wherein the chill roll is metal. 22. The method of claim 15 further comprising a backup roll of metal, rubber, plastic, or rubber. 23. The method of claim 15 wherein the pattern comprises a plurality of spaced objects. 24. A method for forming a fluid container comprising: providing a first non-molten sheet of a first polymeric material selected from the group consisting of polyolefins, ethylene and vinyl acetate copolymers, ethylene copolymerized with carboxylic acids having from 3 to 20 carbons and ester and anhydride derivatives thereof, ethylene and vinyl alcohol copolymers, polyamides, polyesters, polyvinyl vinyl chloride and elastomers; providing a second non-molten sheet of a second polymeric material; positioning the first non-molten sheet or the second non-molten sheet to overlap at least a portion of the other sheet to define an interference zone; directing a molten third polymeric material into the interference zone to adhere the first non-molten sheet to the second non-molten sheet to form the layered structure; texturing the first non-molten sheet to form a pattern on a surface of the first non-molten sheet utilizing a chill roll, the pattern being dimensioned to form fluid pathways on the surface to assist in removing fluid from the surface; forming a container having a chamber defined by opposed sidewalls having one of the opposed sidewalls formed from the layered structure and having the fluid pathways positioned facing the chamber; and providing an access member fixedly attached to a planar surface of one of the sidewalls for providing fluid access to the chamber. 25. The method of claim 24 wherein the second polymeric material is selected from the group consisting of polyolefins, ethylene and vinyl acetate copolymers, ethylene copolymerized with carboxylic acids having from 3 to 20 carbons and ester and anhydride derivatives thereof, ethylene and vinyl alcohol copolymers, polyamides, polyesters, polyvinyl vinyl chloride, PVDC and elastomers. 26. The method of claim 25 wherein the step of texturing is carried out essentially simultaneously with the step of adhering the first sheet to the second sheet. 27. The method of claim 24 wherein the step of directing a third polymeric material into the interference zone comprises the step of applying an adhesive material. 28. The method of claim 26 wherein the step of texturing comprises the step of contacting the first non-molten sheet with a surface having a pattern. 29. The method of claim 28 wherein the surface is provided on a roll. 30. The method of claim 29 wherein the surface is provided on the chill roll. 31. The method of claim 29 wherein the surface is provided on a back-up rail. 32. The method of claim 28 wherein the surface is carried on a second roll. 33. The method of claim 29 wherein the pattern extends outward from the surface of the roll. 34. The method of claim 29 wherein the pattern extends inward from the surface of the roll. 35. The method of claim 28 wherein the pattern is generally a checkerboard pattern. 36. The method of claim 28 wherein the pattern is defined by a series of spaced protuberances. 37. The method of claim 36 wherein the protuberances have a generally circular shape. 38. The method of claim 36 wherein the protuberances have a polygonal shape. 39. The method of claim 36 wherein the protuberances have an irregular shape. 40. The method of claim 36 wherein the protuberances have a generally teardrop shape. 41. The method of claim 36 wherein the protuberances have a first set of protuberances with a first shape and a second set of protuberances with a second shape different from the first shape. 42. The method of claim 36 wherein the protuberances are generally S-shaped. 43. The method of claim 26 wherein the first non-molten sheet is a monolayer structure or a multiple layered structure. 44. The method of claim 26 wherein the first non-molten sheet is a monolayer structure. 45. The method of claim 26 wherein the first non-molten sheet is a multiple layered structure. 46. The method of claim 45 wherein the multiple layered structure has a first layer and a second layer. 47. The method of claim 46 wherein the first layer is a polyolefin. 48. The method of claim 47 wherein the second layer is a barrier material. 49. The method of claim 48 wherein the barrier material comprises ethylene vinyl alcohol copolymer or PVDC. 50. The method of claim 46 wherein the first layer is an ethylene and α-olefin copolymer and the second layer is ethylene and vinyl alcohol copolymer. 51. The method of claim 43 wherein the second non-molten sheet is a monolayer structure or a multiple layered structure. 52. The method of claim 51 wherein the second non-molten sheet contains a layer of a polyamide or a layer of a polyester. 53. The method of claim 52 wherein the third polymeric material is a polyolefin. 54. The method of claim 53 wherein the third polymeric material is a homopolymer of ethylene or a copolymer of ethylene and α-olefin having from 3 to 20 carbons. 55. The method of claim 54 wherein the third polymeric material is a homopolymer of polyethylene. 56. A method forming a container comprising: providing a multiple layer film fanned in an extrusion lamination process wherein a first non-molten polymeric sheet of material is attached to a second non-molten polymeric sheet of material by directing a first molten polymeric material between the first non-molten sheet of material and the second non-molten sheet of material to form a layered structure and while attaching the first non-molten sheet of material to the second non-molten sheet of material texturing a surface of the first non-molten sheet or the second non-molten sheet utilizing a chill roll to form a pattern on the surface, the pattern being dimensioned to form fluid pathways on the surface to assist in removing fluid from the surface; and forming a container having opposed sidewalls sealed along peripheral edges to define a fluid tight chamber, and at least one sidewall formed from the multiple layer film, the at least one sidewall having a fluid contacting surface facing the chamber of the container and having the fluid pathways positioned on the fluid contacting surface, the container further having an access member fixedly attached to one of the opposed sidewalls for withdrawing fluid from the fluid tight chamber. 57. The method of claim 56 wherein the access member is a fitment for filling and withdrawing fluid from the chamber. 58. The method of claim 57 wherein the fitment is adapted to be connected to a hose. 59. The method of claim 56 wherein the each of the opposed sidewalls are formed from the multiple layer film and each have fluid contacting surfaces facing the chamber and each of the fluid contacting surfaces have the fluid pathways positioned thereon.

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Method for texturing a film

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Method for texturing a film

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