Valve and valve strip for a reclosable container
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B65D-033/01
B65D-033/25
B65D-077/22
B65D-081/20
출원번호
US-0471576
(2012-05-15)
등록번호
US-8985855
(2015-03-24)
발명자
/ 주소
Turvey, Robert R.
Stanke-Koch, Razili
출원인 / 주소
S.C. Johnson Home Storage, Inc.
인용정보
피인용 횟수 :
1인용 특허 :
46
초록▼
A gastight valve strip for a reclosable container. The valve strip includes opposing first and second film layers adapted to be disposed over a container aperture through a sidewall of the reclosable container. The first film layer is attached to the second film layer by a first thermal seal dispose
A gastight valve strip for a reclosable container. The valve strip includes opposing first and second film layers adapted to be disposed over a container aperture through a sidewall of the reclosable container. The first film layer is attached to the second film layer by a first thermal seal disposed around the periphery of the first film layer. An attachment surface of the second film layer is adapted to be sealed to the sidewall of the reclosable container. Opposing surfaces of the first and second film layers form a substantially gastight seal therebetween upon contact of the film layers. Offset first film layer and second film layer apertures extend through the first and second film layers, respectively, the first film layer aperture being in fluid communication with an exterior side of the valve strip and the second film layer aperture being configured to be in fluid communication with the container aperture.
대표청구항▼
1. A gastight valve strip for a reclosable container, the reclosable container having a container aperture through a sidewall of the container, the valve strip comprising: (i) a first film layer having a periphery;(ii) a first thermal seal disposed around the periphery of the first film layer;(iii)
1. A gastight valve strip for a reclosable container, the reclosable container having a container aperture through a sidewall of the container, the valve strip comprising: (i) a first film layer having a periphery;(ii) a first thermal seal disposed around the periphery of the first film layer;(iii) a second film layer opposing the first film layer, the first and second film layers adapted to be disposed over a container aperture through a sidewall of the reclosable container, the second film layer being attached to the first film layer by the first thermal seal, and opposing surfaces of the first and second film layers forming a substantially gastight seal therebetween upon contact of the first and second film layers to each other, wherein the second film layer comprises an attachment surface being adapted to be sealed to the sidewall of the reclosable container, the attachment surface comprising a patterned portion that defines a region of flow channels;(iv) a first film layer aperture extending through the first film layer, the first film layer aperture being in fluid communication with an exterior side of the valve strip;(v) a second film layer aperture extending through the second film layer, the second film layer aperture being configured to be in fluid communication with the container aperture through the patterned portion of the attachment surface, wherein the patterned portion extends along the attachment surface and into the second film layer aperture, and the second film layer aperture is offset and spaced apart from the first film layer aperture; and(vi) a second thermal seal between the first and second film layers, the second thermal seal surrounding a region that includes the first film layer aperture and the second film layer aperture,wherein at least a portion of a surface of the second film layer opposite to the attachment surface comprises a patterned portion to provide flow channels in fluid communication with the second film layer aperture, such that a vacuum pressure dispersed over the first film layer aperture and the flow channels separates the first and second film layers, to allow gas to exhaust from the reclosable container through the container aperture. 2. The gastight valve strip of claim 1, wherein the attachment surface of the second film layer is adapted to be sealed to the sidewall by an adhesive. 3. The gastight valve strip of claim 1, wherein the patterned portion of the attachment surface of the second film layer is embossed or textured to provide the fluid communication between the container aperture and the second film layer aperture when the valve strip is attached to the reclosable container. 4. The gastight valve strip of claim 3, wherein the patterned portion of the at least a portion of the surface of the second film layer opposite to the attachment surface is embossed or textured to provide the flow channels in fluid communication with the second film layer aperture. 5. The gastight valve strip of claim 1, wherein the second thermal seal comprises an intermittent spot seal surrounding the region including the first film layer and second film layer apertures. 6. The gastight valve strip of claim 1, wherein the first thermal seal is an intermittent spot seal comprising a plurality of individual spaced apart sealing spots, and at least one of the plurality of individual sealing spots is triangular. 7. The gastight valve strip of claim 6, wherein the at least one triangular individual sealing spot is oriented such that a side thereof is generally aligned with an adjacent peripheral edge of the first film layer. 8. The gastight valve strip of claim 5, wherein the second thermal seal comprises an odd plurality of individual spaced apart sealing spots, and wherein at least one of the individual sealing spots is triangular and is oriented such that a corner thereof points toward a central portion of the region. 9. The gastight valve strip of claim 8, wherein the first thermal seal is an intermittent spot seal comprising a plurality of individual spaced apart sealing spots, and at least one of the plurality of individual sealing spots is triangular. 10. The gastight valve strip of claim 9, wherein the at least one triangular individual sealing spot is oriented such that a side thereof is generally aligned with an adjacent peripheral edge of the first film layer. 11. The gastight valve strip of claim 1, wherein the reclosable container is selected from the group consisting of a reclosable pouch, a bowl, a bottle, a storage box, a canister, and a lid or cover attachable to a container body. 12. The gastight valve strip of claim 1, wherein each of the first and second film layers is made of a flexible thermoplastic material selected from the group consisting of polyolefin plastomer, polypropylene, HDPE, and combinations thereof. 13. The gastight valve strip of claim 1, wherein the first and second thermal seals are selected from the group consisting of a heat seal and a seal formed by ultrasonic vibration. 14. The gastight valve strip of claim 1, wherein the first and second thermal seals are continuous. 15. The gastight valve strip of claim 1, wherein the first and second thermal seals are intermittent spot seals comprising individual sealing spots. 16. The gastight valve strip of claim 1, wherein the reclosable container is a reclosable pouch comprising: first and second opposing sidewalls; andcomplementary interlocking closure elements disposed on the respective first and second opposing sidewalls. 17. The gastight valve strip of claim 16, wherein the first and second film layers are sealed to an interior surface of the first sidewall. 18. The gastight valve strip of claim 16, wherein the second film layer is sealed to the first sidewall by a first sidewall seal disposed at least across a first edge of the second film layer. 19. The gastight valve strip of claim 18, wherein the first film layer is further attached to the second film layer by a third thermal seal disposed at least across a first edge of the first film layer. 20. The gastight valve strip of claim 19, wherein the second film layer is further sealed to the first sidewall by a second sidewall seal disposed at least across a second edge of the second film layer. 21. The gastight valve strip of claim 20, wherein the first thermal seal, the second thermal seal, the third thermal seal, the first sidewall seal, and the second sidewall seal are intermittent spot seals. 22. The gastight valve strip of claim 21, wherein the second thermal seal comprises an odd plurality of individual sealing spots, and at least one of the individual sealing spots is triangular and is oriented such that a corner thereof points toward a central portion of the region. 23. The gastight valve strip of claim 21, wherein individual sealing spots of the first thermal seal and the first sidewall seal are coincident, and individual sealing spots of the third thermal seal and the second sidewall seal are coincident. 24. The gastight valve strip of claim 21, wherein each of the first thermal seal, the second thermal seal, the third thermal seal, the first sidewall seal, and the second sidewall seal includes at least one individual sealing spot that is triangular and oriented such that a side thereof is generally aligned with an adjacent peripheral edge of one of the first film layer and the second film layer. 25. The gastight valve strip of claim 1, wherein the first film layer aperture and the second film layer aperture are each configured to be spaced apart and offset from the container aperture when the valve strip is attached to the reclosable container.
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