Method for sealing zipper assembly to bag making film at three or more points
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B65D-033/16
출원번호
US-0261480
(2002-09-30)
발명자
/ 주소
Johnson, Joel L.
출원인 / 주소
Illinois Tool Works Inc.
대리인 / 주소
Ostrager Chong Flaherty &
인용정보
피인용 횟수 :
17인용 특허 :
9
초록▼
A method for sealing a zipper assembly to bag making film at three or more points. The zipper assembly comprises a short zipper flange and a long zipper flange. The short flange is joined to one wall of the package while the long flange is joined to both walls of the package to define a product spac
A method for sealing a zipper assembly to bag making film at three or more points. The zipper assembly comprises a short zipper flange and a long zipper flange. The short flange is joined to one wall of the package while the long flange is joined to both walls of the package to define a product space in which the product is contained. Both the short and long zipper flanges are sealed to the bag making film at a first sealing station prior to folding of the film. After folding, the long zipper flange is sealed at one or more zones of joinder to the other side of the folded film. If the zipper assembly is attached in proximity to the fold line, then the second sealing operation is performed before filling and the bag is filled through the package bottom. If the zipper assembly is attached near the edge of the web of bag making film, then the second sealing operation is performed after the filling operation.
대표청구항▼
1. A package comprising:first and second walls; and a flexible zipper comprising first and second zipper parts that are mutually engageable to close said zipper and disengageable to open said zipper, said first zipper part comprising a first profiled closure element and a first flange having a first
1. A package comprising:first and second walls; and a flexible zipper comprising first and second zipper parts that are mutually engageable to close said zipper and disengageable to open said zipper, said first zipper part comprising a first profiled closure element and a first flange having a first length, and said second zipper part comprising a second profiled closure element that is interlockable with said first closure element and a second flange having a second length greater than said first length, wherein a longitudinal portion of said first flange is joined to said first wall at a first seal, a first longitudinal portion of said second flange is joined to said first wall at a second seal, a second longitudinal portion of said second flange is joined to said second wall at a third seal, and a third longitudinal portion of said second flange is joined to said second wall at a fourth seal, said second seal being below said first seal, and said third seal being below said fourth seal, said second flange comprising a web of thermoplastic material having first and second sides, said second through fourth seals being on said first side of said second flange. 2. The package as recited in claim 1, further comprising a slider mounted to said zipper and configured to close portions of said zipper as said slider is moved in a first direction along said zipper and to open portions of said zipper as said slider is moved in a second direction along said zipper opposite to said first direction.3. The package as recited in claim 1, wherein said first and second walls are connected along a fold line located above said zipper.4. The package as recited in claim 3, wherein said first and second walls are joined adjacent said fold line to form a fifth seal.5. The package as recited in claim 3, wherein said first wall has a tear line located between said first closure element and said first seal, and said second wall has a tear line located between said second closure element and said fourth seal.6. The package as recited in claim 1, wherein said second flange has a tear line located between said first and second longitudinal portions of said second flange.7. The package as recited in claim 1, wherein said first and second seals are generally parallel to each other, and said third and fourth seals are generally parallel to each other.8. The package as recited in claim 1, wherein said second flange has a generally V-shaped portion that connects said first and second longitudinal portions of said second flange.9. A package comprising:a sheet of film folded along a fold line and sealed along its unfolded edges to form a bag body having opposing walls and an interior; and a flexible zipper joined to said opposing walls of film in proximity to said fold line, whereby said interior of said bag body is divided into a header space and a product space by joinder of said zipper and said opposing walls, said zipper comprising first and second zipper parts that are mutually engageable to close said zipper and disengageable to open said zipper, said first zipper part comprising a first profiled closure element and a first flange having a first length, and said second zipper part comprising a second profiled closure element that is interlockable with said first closure element and a second flange having a second length greater than said first length, wherein one side of said first flange is joined to one wall of said bag body and one side of said second flange is joined to both walls of said bag body in a manner that closes said product space, wherein said second flange comprises a first portion joined to said one wall along a first seal, a second portion joined to the other wall along a second seal, and a third portion joined to said other wall along a third seal, said second and third seals being generally mutually parallel and separated by an unsealed region of said second flange. 10. The package as recited in claim 9, wherein said second flange comprises a tear line located between said first and second portions of said second flange.11. The package as recited in claim 10, wherein said second flange has a generally V-shaped portion that connects said first and second portions of said second flange, said tear line being located at a cusp of said generally V-shaped portion.12. The package as recited in claim 9, further comprising a slider mounted to said zipper and configured to close portions of said zipper as said slider is moved in a first direction along said zipper and to open portions of said zipper as said slider is moved in a second direction along said zipper opposite to said first direction, said slider being disposed in said header space.13. The package as recited in claim 9, wherein opposing portions of said sheet of film are joined to each other adjacent said fold line to form a header seal.14. The package as recited in claim 13, wherein said film is a laminate comprising a first layer of low-melting-point sealant thermoplastic material and a second layer of higher-melting-point thermoplastic material, said first layer facing said interior of said bag body.15. The package as recited in claim 9, wherein a first portion of said film on one side of said fold line has a first tear line, and a second portion of said film on the other side of said fold line has a second tear line, said first and second portions of said film defining said header space.
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이 특허에 인용된 특허 (9)
May Timothy J. (Greenville WI), Closure arrangement having a peelable seal.
May Timothy J. (Greenville WI) Custer Richard G. (Appleton WI) Kettner Catherine E. (Appleton WI) Nichols Wendy S. (Waupaca WI), Easy open package header.
Kinigakis, Panagiotis; Pokusa, Kenneth C.; Arnold, Kelly E.; Howell, III, Harold Marvin; Radakovits, Kenneth, Method of making flexible packages having slide closures.
Anzini, David J.; Koenigkramer, Rusty; Howell, Clifton R.; Ausnit, Steven, Method of producing high burst zipper assemblies for large reclosable packages.
Dais, Brian C.; Turvey, Robert R.; Pawloski, James C.; Ackerman, Bryan L.; Zimmerman, Daniel P., Pouch and airtight resealable closure mechanism therefor.
Dais, Brian C.; Turvey, Robert R.; Pawloski, James C.; Ackerman, Bryan L.; Zimmerman, Daniel P., Pouch and airtight resealable closure mechanism therefor.
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