[특허]Method for making a flexible packaging structure with a built-in opening and reclose feature

[미국특허] Method for making a flexible packaging structure with a built-in opening and reclose feature 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B32B-038/04
출원번호	US-0031469 (2011-02-21)
등록번호	US-8262832 (2012-09-11)
발명자 / 주소	Hebert, Robert Charles Huffer, Scott William Reese, Barry Roland Prizzi, John A.
출원인 / 주소	Sonoco Development, Inc.
대리인 / 주소	Alston & Bird LLP
인용정보	피인용 횟수 : 14 인용 특허 : 21

초록 ▼

A flexible packaging laminate is formed to have a built-in opening and reclose feature by forming the laminate as a two-part structure having an outer structure joined in face-to-face relation with an inner structure. Score lines are formed in both structures to enable an opening to be formed through the laminate by lifting an opening portion (e.g., a flap or the like) of the two structures out of the plane of the laminate. The score line through the outer structure defines a larger opening than the score line through the inner structure, such that a marginal region of the outer structure extends beyond the edge of the opening portion of the inner structure. A pressure-sensitive adhesive is used to re-adhere the marginal region to an underlying surface of the inner structure adjacent the opening through the laminate.

대표청구항 ▼

1. A method for making a flexible packaging laminate having a built-in opening and reclose feature, comprising the steps of: applying a pressure-sensitive adhesive onto one surface of a first structure comprising at least one layer of flexible material, the pressure-sensitive adhesive substantially entirely covering the one surface;adhesively joining the first structure to a second structure via the pressure-sensitive adhesive so as to form a laminate having a width defined between opposite longitudinal edges thereof, the first structure and the second structure each having a width equal to the width of the laminate, respective longitudinal edges of the first and second structures being substantially coincident with each other and defining the longitudinal edges of the laminate, and the second structure comprising at least one layer of flexible material, wherein one of the first and second structures comprises an outer structure and the other comprises an inner structure;advancing the laminate to a scoring station at which an outer score line is formed through the thickness of the outer structure and an inner score line is formed through the thickness of the inner structure, the outer score line delineating an outer opening portion of the outer structure that is separable from the outer structure along the outer score line, the inner score line delineating an inner opening portion of the inner structure that is affixed to the outer opening portion by the pressure-sensitive adhesive and is separable from the inner structure along the inner score line, wherein a region of the outer opening portion between the outer and inner score lines is attached to an underlying surface of the inner structure via the pressure-sensitive adhesive, the outer opening portion being peelable from the underlying surface of the inner structure so as to cause the inner opening portion to also be peeled back to create an opening in the laminate, and the outer opening portion being re-attachable to the underlying surface of the inner structure via the pressure-sensitive adhesive for reclosing the opening. 2. The method of claim 1, wherein the outer structure is provided to be formed of a material that has a greater bonding affinity to the pressure-sensitive adhesive than does the inner structure. 3. The method of claim 2, wherein the outer structure is provided to be formed of polyester and the inner structure is provided to have a layer of polyolefin forming the underlying surface to which the pressure-sensitive adhesive is attached and re-attached. 4. The method of claim 1, further comprising forming a tamper-evidence feature in the laminate such that initial opening of the built-in opening and reclose feature causes the tamper-evidence feature to be visible adjacent the opening in the laminate. 5. The method of claim 4, wherein the step of forming the tamper-evidence feature comprises treating an area of said region of the outer opening portion to readily release from ink, and printing ink onto said region over said area prior to applying the pressure-sensitive adhesive. 6. The method of claim 1, wherein the score lines are formed with a laser. 7. The method of claim 1, wherein the score lines are formed by mechanical scoring. 8. The method of claim 1, wherein one of the score lines is formed with a laser and the other score line is formed by mechanical scoring. 9. The method of claim 1, wherein the score lines are formed to be generally U-shaped such that the outer and inner opening portions form a flap that remains attached to the laminate along a hinge extending between legs of the U-shaped score lines. 10. The method of claim 1, further comprising the step of treating the one surface of the outer structure with a corona or flame treatment to enhance bonding affinity with the pressure-sensitive adhesive such that the pressure-sensitive adhesive tends to remain adhered to the outer opening portion and to detach from the underlying surface of the inner structure when the opening portions are peeled back. 11. The method of claim 1, wherein the first structure comprises a continuous web drawn from a first supply roll and advanced to an adhesive application station at which the pressure-sensitive adhesive is applied to the first structure, and wherein the second structure comprises a continuous web drawn from a second supply roll and advanced to a laminating station at which the first and second structures are adhesively joined. 12. The method of claim 1, wherein the scoring station forms the score lines in the laminate at intervals spaced apart along the laminate by an index distance corresponding approximately to a package dimension of packages to be produced from the packaging laminate. 13. The method of claim 1, wherein the inner structure is provided as a coextruded web comprising a barrier layer and a sealant layer. 14. The method of claim 1, wherein the inner structure is provided to have a barrier layer facing the outer structure and a sealant layer on an opposite side of the barrier layer from the outer structure, and a metallization layer disposed on the barrier layer facing the outer structure. 15. The method of claim 1, wherein no pressure-sensitive adhesive is applied to a region of the one surface of the first structure so as to form an adhesive-free region, the adhesive-free region forming a grasping portion of the outer opening portion.

이 특허에 인용된 특허 (21) 인용/피인용 타임라인 분석

James W. Lowry ; Jeffrey M Schuetz ; Krishnaraju Varadarajan, Bag laminate with a removable sticker portion.
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Jacobs Richard W. (Eden Prairie MN), Bag with opening and reclosing feature.
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Huffer, Scott W.; Schuetz, Jeffrey M., Bag with reusable built-in closure tab.
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Guibert, Denis, Case for products such as moist wipes.
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Chang Sung-Choi (48 Mountainview Rd. Cresskill NJ 07626), Container resealable sealing device construction.
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Nakamura Kenji (3-7 ; Nishiawaji 6-chome Higashiyodogawa-ku ; Osaka JPX), Dispenser-container containing wet and dry contents and process for manufacturing the same.
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Forman Harold (P.O. Box 363 Conshohocken PA 19428), Label resealing container.
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Guckenberger Anthony (Appleton WI), Laser scoring of packaging substrates.
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Horikawa Hisao (Funabashi JPX) Kano Mitsuru (Tokyo JPX), Moisture proof container with an outer box and an inner bag opened simultaneously.
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Bowen William E. ; Murray ; Jr. Lee J., Multilayer film structure and packages therefrom for organics.
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Cornelissen Roger E. (c/o Grupo Arbora ; Via Augusta 2 bis 08006 Barcelona ESX) Haubach Claus C. F. (both c/o Procter & Gamble GmbH ; Sulzbacherstrasse 40 6231 Schwalbach DEX) Blanco Agustin R. (both, Package consisting of a paper bag compactly packing compressed flexible articles.
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Scott W. Huffer ; Jeffrey M. Schuetz, Packaging with incorporated temporary tattoo.
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Nakamura Kenji (3-7 ; Nishiawaji 6-chome Higashiyodogawa-ku ; Osaka JPX), Process for manufacturing dispenser-container containing wet and dry contents.
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Caputo Garry L. (Rutherford NJ) Saldarelli Thomas A. (Yorktown Heights NY) Dwan William E. (Yorktown Heights NY), Re-sealable label flap.
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Navarini Franco,ITX ; Molinari Armando,ITX, Reclosable packing system.
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Nakamura Kenji (3-7 ; Nishiawaji 6-chome Higashiyodogawa-ku ; Osaka JPX), Resealable dispenser-container.
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Sierra-Gomez, Gladys Odette; Peters, Eva Marie; Stiener, Joseph; Flynn, IV, Charles Francis; Mandle, James Spencer, Resealable food container.
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Steven Michael Scott, Resealable metalized thermal bag.
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Chang, Sung-Chol, Resealable sealing device.
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Barry M. Scott ; James F. Konicke ; Martin J. Leonard, Resealable tamper indicating label flap including printer indicia.
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Deflander Joseph F. (Wespelaar BEX) De Caluwe Robert (Londerzeel BEX) Stulens Marielle J. C. (Hoegaarden BEX), Storing and dispensing system for products packed in a sealed pouch.
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이 특허를 인용한 특허 (14) 인용/피인용 타임라인 분석

Montsinger, Mark Stephen; Pratt, John Andrew; Thibeault, Bryan Joseph, Extrusion lamination with registered cold seal adhesive.
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Lyzenga, Deborah; Weber, Jeffrey Thomas; Huffer, Scott William; Davis, Benjamin Michael, Package integrity indicating closure.
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Vogt, Carole A.; Weber, Jeffrey Thomas, Package integrity indicating closure.
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Vogt, Carole A.; Weber, Jeffrey Thomas, Package integrity indicating closure.
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Vogt, Carole Anne; Moncayo, Gladys Odette; Weber, Jeffrey Thomas; McDermott, Elizabeth A.; Philipsen, Douglas H., Package integrity indicator for container closure.
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Vogt, Carole Anne; Moncayo, Gladys Odette; Weber, Jeffrey Thomas; McDermott, Elizabeth A.; Philipsen, Douglas H., Package integrity indicator for container closure.
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Willey, Jason Denis; Cheema, Parbinder, Packaging.
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Huffer, Scott William, Precision scored exterior pocket for flexible package.
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Huffer, Scott William, Precision scored wrapper for in home use.
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Lyzenga, Deborah A.; Weber, Jeffrey T.; Glydon, James Anthony; Ziolkowski, Evan Michael, Reclosable flexible film packaging products and methods of manufacture.
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Lyzenga, Deborah A.; Weber, Jeffrey T.; Doll, Paul E.; Fenech, Louis P., Reclosable flexible packaging and methods for manufacturing same.
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Lyzenga, Deborah A.; Weber, Jeffrey Thomas; Fenech, III, Louis Peter; Scarola, Leonard; Leichte, Rachel; Golden, Marty; Doll, Paul E., Reclosable flexible packaging and methods for manufacturing same.
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Sierra-Gomez, Gladys Odette; Exner, Ron; Dagestad, Olav; Gracia-Lugo, Alexis Julian, Resealable closure with package integrity feature.
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Renders, Eddy; Verhaegen, Rene; Looymans, Peter, Resealable packaging for food products and method of manufacturing.
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[미국특허] Method for making a flexible packaging structure with a built-in opening and reclose feature 원문보기