IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0625725
(1984-06-28)
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발명자
/ 주소 |
- Kuchenbecker Morris W. (Neenah WI)
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출원인 / 주소 |
- James River Corporation (Richmond VA 02)
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인용정보 |
피인용 횟수 :
25 인용 특허 :
4 |
초록
▼
The invention relates to a method and a carton blank for forming a reclosable package made of carton stock, coated at least on the end closure flaps thereof, with a heat-sealing coating, which comprises: a front panel, a rear panel, and side panels sealed together to form a tube, and an end closure
The invention relates to a method and a carton blank for forming a reclosable package made of carton stock, coated at least on the end closure flaps thereof, with a heat-sealing coating, which comprises: a front panel, a rear panel, and side panels sealed together to form a tube, and an end closure therefor comprised of dust flaps on said side panels, a cover flap on said rear panel, a tuck-in tab on the free end of said cover flap, and a sealing flap on said front panel adapted to overlie said cover flap, said dust flaps, said cover flap, and said sealing flap being heat-sealed by means of said coating into a unitary end closure and said closure being provided with ply-separation portions and a tear-out portion which, when the tear-out portion is stripped off, frees the cover flap and its tuck-in tab sufficiently that it can be opened and reclosed. Details of the construction and operation of the ply-separation portions and the tear-out portion are included.
대표청구항
▼
A carton blank for a reclosable carton, having end closure flaps, made from carton stock coated, at least on the end closing flaps thereof, with a heat-sealing coating, which comprises: a front panel, a rear panel, and side panels adapted to be sealed together to form a carton tube, and end closure
A carton blank for a reclosable carton, having end closure flaps, made from carton stock coated, at least on the end closing flaps thereof, with a heat-sealing coating, which comprises: a front panel, a rear panel, and side panels adapted to be sealed together to form a carton tube, and end closure flaps therefor comprised of dust flaps, a cover flap and a sealing flap which flaps can be folded in, in the order named, to form an end closure; p1 said dust flaps having narrow, heat-sealable areas adjacent and along the dust flap-side panel fold lines from one end to the other end thereof; said cover flap having portions along the end edges thereof cut away complementary with the heat-sealable areas of said dust flaps and a heat-sealable area along and adjacent the cover flap-rear panel fold line from one end of said cover flap to the other end thereof and which, in the erected carton, forms with said dust-flap heat-sealable areas, a continuous, planar, generally U-shaped sealing zone along and adjacent to the cover flap-rear panel fold line and the dust flap-side panel fold lines; said continuous, planar, generally U-shaped sealing zone, in the end closure in the erected carton, lying in juxtaposition with a correspondingly planar, generally U-shaped sealing zone of said sealing flap with the juxtaposed portions of said cover flap and said sealing flap lying within said generally U-shaped sealing zones being unsealable and said end closure flaps being thus heat-sealable by means of said juxtaposed, continuous, planar, generally U-shaped sealing zones into a unitary end closure; said sealing flap having a portion separable therefrom by ply-separation means coincident with the inner edges of said generally U-shaped sealing zones whereby, when said end closure is made, the unsealed portion of said sealing flap can be stripped away from the unsealed portion of said cover flap, and wherein said cover flap has tear means which, when said end closure is made, facilitates opening thereof and provides a cover that can be opened and reclosed; said end closure being formed into a carton without the addition of adhesive or other material; and said cover flap being free of openings therein or opening-forming tear-outs therein.
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