Re-closable can end lid with a rotatable opening and re-sealing tab and drink can equipped with the re-sealable can end lid
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B65D-017/34
B23P-011/00
출원번호
US-0002642
(2008-09-11)
등록번호
US-8434635
(2013-05-07)
우선권정보
DE-10 2008 031 667 (2008-07-04)
국제출원번호
PCT/EP2008/062075
(2008-09-11)
§371/§102 date
20110324
(20110324)
국제공개번호
WO2010/000340
(2010-01-07)
발명자
/ 주소
Wichelhaus, André
출원인 / 주소
IMV Innovation Marketing und Vertriebs GmbH
대리인 / 주소
Schlee IP International, P.C.
인용정보
피인용 횟수 :
1인용 특허 :
9
초록▼
Re-closable can end lid with a rotatable opening and re-sealing tab, and drink can equipped with the re-sealable can end lid, wherein a lid plate (2) includes a break-away portion (8) surrounded by a predetermined break-line (9) that is separable from the lid plate by the press portion (21) of an op
Re-closable can end lid with a rotatable opening and re-sealing tab, and drink can equipped with the re-sealable can end lid, wherein a lid plate (2) includes a break-away portion (8) surrounded by a predetermined break-line (9) that is separable from the lid plate by the press portion (21) of an opening tab (20) in an opening position of the tab, so that an aperture (10) is created in the lid plate that is surrounded by a ring-wall (11) on the outside of the predetermined break-line (9). On a grip portion (22) of the opening tab (20), a sealing attachment (25) is formed that, after rotating the opening tab (20) into a closing rotating position, fits into a recess surrounded by the ring-wall and sealingly engages on the inner face of the ring-wall (11) along its outer circumferential sealing rim.
대표청구항▼
1. A can end lid for a can, the can end lid comprising: a lid plate made of a sheet material and including an upper side and an underside and a peripheral wall that protrudes on and surrounds the upper side of the lid plate, wherein a break-away area that includes a break-away portion is formed in t
1. A can end lid for a can, the can end lid comprising: a lid plate made of a sheet material and including an upper side and an underside and a peripheral wall that protrudes on and surrounds the upper side of the lid plate, wherein a break-away area that includes a break-away portion is formed in the lid plate between the peripheral wall and a fixing stud disposed on the lid plate, the break-away portion circumferentially defined, at least predominantly, by a predetermined break-line, andan opening tab made of a sheet material and formed with a press portion and a grip portion and rotatably attached to the fixing stud by means of a fastening tongue that is formed to the press portion within a cutout of the opening tab between the press portion and the grip portion, wherein the grip portion is formed with a downward protruding sealing attachment on the underside of the grip portion, the sealing attachment including a sealing rim around an outer circumferential contour of the sealing attachment, so that the press portion, in the opening rotating position of the opening tab, can be pressed down to separate the break-away portion from the lid plate along the predetermined break-line and create an aperture in the lid plate defined by a defining edge, and that the aperture can be sealed again by the sealing rim of the sealing attachment by pressing down the grip portion into a sealing position after rotating the opening tab around the fixing stud into a closing rotating position, wherein a ring-wall extends around the break-away area of the lid plate and has an inner surface having an inner circumferential contour that is closed in itself between the fixing stud and the peripheral wall of the lid plate and having a height that extends at an angle to the upper side of the lid plate to surround and define a recess that includes a bottom on which the break-away portion and the break-line are formed, wherein the shape of a circumferential contour of the break-line is smaller than the shape of said inner circumferential contour of the inner surface of the ring wall, andwherein the sealing rim of the sealing attachment of the opening tab as to the outer circumferential contour of the sealing attachment is shaped complementary to said inner circumferential contour of the inner surface of the ring-wall that is separate from the defining edge of the aperture, and the sealing rim engages on the inner surface of the ring-wall along said outer circumferential contour of the sealing attachment when the sealing attachment dips into the recess in the sealing position of the grip portion. 2. Can end lid according to claim 1, wherein the peripheral wall of the lid plate is point symmetrical to an axis, and the inner surface of the ring-wall as to the height thereof extends in parallel to said axis at least in an upper portion of the ring-wall. 3. Can end lid according to claim 1, wherein the ring-wall, at least in an upper portion thereof and at least along a predominant part of the inner circumferential contour thereof, is made up by an inner wall of a ring bead protruding on the upper side of the lid plate. 4. Can end lid according to claim 3, wherein the ring bead is continuously formed between the breaking-away area and the fixing stud on a side of the breaking-away area that faces the fixing stud. 5. Can end lid according to claim 3, wherein said inner surface of the ring-wall extends down beyond an inner surface of the inner wall of the ring bead. 6. Can end lid according to claim 1, wherein the fixing stud and the fastening tongue are disposed onto a pedestal elevation, the pedestal elevation protruding on the upper side of the lid plate above the break-away area and above the upper side of the lid plate. 7. Can end lid according to claim 6, wherein an upper surface of the pedestal elevation is sloped downward at an angle toward the breaking-away area. 8. Can end lid according to claim 7, wherein the lid plate includes an area surrounding the ring-wall that is sloped correspondingly to the upper surface of the pedestal elevation. 9. Can end lid according to claim 6, wherein the ring bead is bellied in the area of the fixing stud in a direction facing away from the breaking-away area to form a bellied portion, and wherein the pedestal elevation is formed on the bellied portion of the ring bead. 10. Can end lid according to claim 1, wherein the break-away portion on the bottom of the recess is bordered by a ring-shaped inner angular edge, which, in the sealing position of the grip portion of the opening tab, is overlapped by a ring-shaped outer annular edge of the sealing attachment of the grip portion, wherein the inner angular edge or the outer angular edge is coated with a sealing material. 11. Can end lid according to claim 2, wherein the outer surface and the underside of the sealing attachment are in form and dimension complementary to a lid area formed by the inner surface of the ring-wall and by the upper side of the breaking-away area. 12. Can end lid according to claim 1, wherein the grip portion of the opening tab has a circumferential flange that protrudes over the ring-wall when the opening tab is in the sealing position thereof, and a detent is formed on the side of the breaking-away area facing away from the fixing stud, the detent protruding from an inner side of the peripheral wall of the lid plate and cooperating with the circumferential flange of the grip portion of the opening tab in a latching manner in the sealing position of the grip portion to hold down the sealing attachment in the recess, the detent pressed from an outside of the peripheral wall into the peripheral wall to extend in a circumferential direction of the peripheral wall along one of a limited circumferential length of the circumference of the peripheral wall and the total circumference of the peripheral wall. 13. Can end lid according to claim 6, wherein the press portion and the fastening tongue of the opening tab are reinforced by folding back a blank extension portion of the opening tab under the press portion and the fastening tongue, wherein the extension portion is lamellar and has arms, sticking out on either side thereof and being crimped into the side edges of the grip portion, and has a tongue-shaped end-portion that is identical in shape with the fastening tongue and is fixed, together with the fastening tongue, to the fixing stud in a rotatable manner. 14. Can end lid for a can, the can end lid comprising a lid plate made of a sheet material and including an upper side and an underside and a peripheral wall that protrudes on and surrounds the upper side of the lid plate, and including a break-away area that is formed between the peripheral wall and a fixing stud, that is disposed on the lid plate, the break-away area including a break-away portion that is circumferentially defined, at least predominantly, by a predetermined break-line, andan opening tab made of a sheet material and formed with a press portion and a grip portion and being rotatably attached to the fixing stud by means of a fastening tongue that is formed to the press portion within a cutout of the opening tab between the press portion and the grip portion, wherein the grip portion is formed with a downward protruding sealing attachment on the underside of the grip portion, the sealing attachment including a circumferential rim around a circumferential contour of the sealing attachment, so that the press portion, in the opening rotating position of the opening tab, can be pressed down onto the breaking-away portion to separate the break-away portion from the lid plate along the predetermined break-line and create an aperture in the lid plate, and that the aperture can be closed again by the sealing attachment by pressing down the grip portion into a closing position after rotating the opening tab around the fixing stud into a closing rotating position, wherein the breaking-away area is surrounded, at least along a circumferential portion facing away from the fixing stud, by a steep inner wall of a ring bead, the ring bead protruding on the upper side of the lid plate, and wherein the fixing stud and the fastening tongue of the opening tab are disposed above the breaking-away portion on a pedestal elevation protruding on the upper side of the lid plate, wherein the ring bead is bellied in a region of the fixing stud facing away from the breaking-away area to form a bellied portion, and wherein the pedestal elevation is formed on the bellied portion of the ring bead. 15. Can end lid according to claim 14, wherein the upper surface of the pedestal elevation is sloped downwards at an angle toward the breaking-away area. 16. Can end lid according to claim 15, wherein the ring bead is surrounded along the breaking-away area by an area that is sloped correspondingly to the upper surface of the pedestal elevation. 17. Can end lid according to claim 14, wherein the ring bead, on the side of the breaking-away area facing the fixing stud, is continuously formed between the breaking-away area and the fixing stud. 18. Can end lid according to claim 14, wherein the grip portion of the opening tab includes a circumferential flange, that, in the sealing position of the grip portion, protrudes beyond the ring bead, and an inner side of the peripheral wall is formed with a detent that protrudes from the inner side of the peripheral wall of the lid plate on the side of the ring bead facing away from the fixing stud, the detent cooperating with the circumferential flange in a latching manner to hold down the grip portion of the opening tab in the sealing position, the detent pressed from an outside of the peripheral wall into the peripheral wall to extend in a circumferential direction of the peripheral wall along one of a limited circumferential length of a circumference of the peripheral wall and along the total circumference of the peripheral wall. 19. Can end lid for a can, the can end lid comprising: a lid plate made of a sheet material and including an upper side and an underside and a peripheral wall that protrudes on and surrounds the upper side of the lid plate, and including a break-away portion between the peripheral wall and a fixing stud, that is disposed on the lid plate, the break-away portion circumferentially defined, at least predominantly, by a predetermined break-line, andan opening tab made of a sheet material and including a press portion and a grip portion and being rotatably attached to the fixing stud by means of a fastening tongue that is formed to the press portion within a cutout of the opening tab between the press portion and the grip portion, wherein a downward protruding sealing attachment is formed on the underside of the grip portion, the sealing attachment including a sealing rim around a circumferential contour of the sealing attachment, so that the press portion, in the opening rotating position of the opening tab, can be pressed down onto the break-away portion to separate the break-away portion from the lid plate along the predetermined break-line and create an aperture in the lid plate, and that the aperture may be closed again by the sealing rim of the sealing attachment by pressing down the grip portion into a sealing position after rotating the opening tab around the fixing stud into a closing rotating position, wherein the grip portion of the opening tab includes a circumferential flange that in the sealing position of the grip portion protrudes beyond the breaking-away area, and a detent is formed on the peripheral wall on the side of the breaking-away area facing away from the fixing stud to project from an inner side of the peripheral wall, wherein the detent is pressed from an outside of the peripheral wall into the peripheral wall to extend in a circumferential direction of the peripheral wall along one of a limited circumferential length of the circumference of the peripheral wall and the total circumference of the peripheral wall, the detent cooperating with the circumferential flange in a latching manner to hold down the grip portion in the sealing position of the grip portion of the opening tab. 20. Drink can comprising a can end lid, the can end lid comprising: a lid plate made of a sheet material and including an upper side and an underside and a peripheral wall that protrudes on and surrounds the upper side of the lid plate, wherein a break-away area that includes a break-away portion is formed in the lid plate between the peripheral wall and a fixing stud disposed on the lid plate, the break-away portion circumferentially defined, at least predominantly, by a predetermined break-line, andan opening tab made of a sheet material and formed with a press portion and a grip portion and rotatably attached to the fixing stud by means of a fastening tongue that is formed to the press portion within a cutout of the opening tab between the press portion and the grip portion, wherein the grip portion is formed with a downward protruding sealing attachment on the underside of the grip portion, the sealing attachment including a sealing rim around an outer circumferential contour of the sealing attachment, so that the press portion, in the opening rotating position of the opening tab, can be pressed down to separate the break-away portion from the lid plate along the predetermined break-line and create an aperture in the lid plate that is defined by a defining edge, and that the aperture can be sealed again by the sealing rim of the sealing attachment by pressing down the grip portion into a sealing position after rotating the opening tab around the fixing stud into a closing rotating position, wherein a ring-wall extends around the break-away area of the lid plate and has an inner surface having an inner circumferential contour that is closed in itself between the fixing stud and the peripheral wall of the lid plate and having a height that extends at an angle to the upper side of the lid plate and surrounds and defines a recess that includes a bottom on which the break-away portion and the break-line are formed, wherein the shape of a circumferential contour of the break-line is smaller than the shape of the inner circumferential contour of the ring wall, wherein the sealing rim of the sealing attachment of the opening tab as to the outer circumferential contour of the sealing attachment is shaped complementary to said inner circumferential contour of the inner surface of the ring-wall that is separate from the defining edge of the aperture, and the sealing rim engages on the inner surface of the ring-wall along said outer circumferential contour of the sealing attachment when the sealing attachment dips into the recess in the sealing position of the grip portion, wherein the ring-wall, at least in an upper portion of the inner surface thereof and at least along a predominant part of the inner circumferential contour of the inner surface thereof, is made up by a steep inner wall of a ring bead protruding on the upper side of the lid plate, the ring bead is continuously formed between the breaking-away area and the fixing stud on a side of the breaking-away area that faces the fixing stud, and said inner surface of the ring-wall extends down beyond an inner surface of the inner wall of the ring bead, and wherein the fixing stud and the fastening tongue are disposed onto a pedestal elevation, the pedestal elevation protruding on the upper side of the lid plate above the break-away area and above the upper side of the lid plate, wherein the ring bead is bellied in the area of the fixing stud in a direction facing away from the breaking-away area to form a bellied portion and the pedestal elevation is formed on the bellied portion of the ring bead. 21. Drink can according to claim 20, wherein the grip portion of the opening tab includes a circumferential flange that protrudes beyond the ring-wall in the closing rotating position of the opening tab, and wherein the opening tab is in the closing rotating position and is dipping with the sealing attachment into the recess surrounded by the ring-wall while the break-away portion is closed and un-separated, and the opening tab in the closing rotation position thereof has a portion of the circumferential flange that faces away from the fixing stud and is in a location close to the peripheral wall of the lid plate, so that the breaking-away area and the ring-wall are covered by the grip portion and the circumferential flange thereof. 22. Manufacturing process for a can end lid, the can end lid comprising a lid plate made of a sheet material and including an upper side and an underside and a peripheral wall that protrudes on and surrounds the upper side of the lid plate, and in which, between the peripheral wall and a fixing stud disposed on the lid plate, a break-away area with a break-away portion is formed, the break-away portion circumferentially defined, at least predominantly, by a predetermined break-line, and an opening tab made of a sheet material and formed with a press portion and a grip portion and rotatably attached to the fixing stud by means of a fastening tongue that is formed to the press portion within a cutout of the opening tab between the press portion and the grip portion, wherein the grip portion is formed with a downward protruding sealing attachment on the underside of the grip portion, the sealing attachment including a sealing rim around an outer circumferential contour of the sealing attachment, so that the press portion, in the opening rotating position of the opening tab, can be pressed down to separate the break-away portion from the lid plate along the predetermined break-line and create an aperture in the lid plate, and that the aperture can be sealed again by the sealing rim of the sealing attachment by pressing down the grip portion into a sealing position after rotating the opening tab around the fixing stud into a closing rotating position, wherein a ring-wall extends around the break-away area of the lid plate that has an inner circumferential contour that is closed in itself between the fixing stud and the peripheral wall of the lid plate and that surrounds and defines a recess that includes a bottom on which the break-away portion and the break-line are formed, and wherein the sealing rim of the sealing attachment of the opening tab as to the outer circumferential contour of the sealing rim is shaped complementary to said inner circumferential contour of the ring-wall and the sealing rim engages on the inner surface of the ring-wall along said outer circumferential contour of the sealing rim when the sealing attachment dips into the recess in the sealing position of the grip portion, wherein the manufacturing process is characterized in, that:the lid plate and the opening tab are form-shaped in separate process steps to form the ring wall of the lid plate and the sealing rim forming circumferential wall of the sealing attachment, respectively,and the opening tab is then rotatably riveted with its fastening tongue to the fixing stud of the lid plate,after which the ring wall of the lid plate together with the sealing rim forming circumferential wall of the sealing attachment of the opening tab are commonly repressed between a press die and a press ram in such a state of the lid plate and of the opening tab in which the opening tab is in the closing rotating position and the grip portion is lowered into the sealing position thereof, in which the sealing attachment of the grip portion with its sealing rim engages on the inner surface of the ring-wall. 23. Manufacturing process according to claim 22, wherein after the repressing operation, the peripheral wall of the lid plate is fitted form-fit with a free flange of the peripheral wall onto a can end of the can in such a state of the opening tab in which the grip portion is disposed in its sealing position. 24. Can end lid according to claim 2, wherein the ring-wall, at least in an upper portion thereof and at least along a predominant part of the inner circumferential contour thereof, is made up by an inner wall of a ring bead protruding on the upper side of the lid plate. 25. Can end lid according to claim 24, wherein said inner surface of the ring-wall extends down beyond an inner surface of the inner wall of the ring bead. 26. Can end lid according to claim 25, wherein the ring bead is continuously formed between the breaking-away area and the fixing stud on a side of the breaking-away area that faces the fixing stud. 27. Can end lid according to claim 2, wherein the fixing stud and the fastening tongue are disposed onto a pedestal elevation, the pedestal elevation protruding on the upper side of the lid plate above the break-away area and above the upper side of the lid plate. 28. Can end lid according to claim 24, wherein the fixing stud and the fastening tongue are disposed onto a pedestal elevation, the pedestal elevation protruding on the upper side of the lid plate above the break-away area and above the upper side of the lid plate. 29. Can end lid according to claim 26, wherein the fixing stud and the fastening tongue are disposed onto a pedestal elevation, the pedestal elevation protruding on the upper side of the lid plate above the break-away area and above the upper side of the lid plate. 30. Can end lid according to claim 28, wherein the ring bead is bellied in the area of the fixing stud in a direction facing away from the breaking-away area to form a bellied portion, and wherein the pedestal elevation is formed on the bellied portion of the ring bead. 31. Can end lid according to claim 29, wherein the ring bead is bellied in the area of the fixing stud in a direction facing away from the breaking-away area to form a bellied portion, and wherein the pedestal elevation is formed on the bellied portion of the ring bead. 32. Can end lid according to claim 30, wherein the break-away portion on the bottom of the recess is bordered by a ring-shaped inner angular edge, which, in the sealing position of the grip portion of the opening tab, is overlapped by a ring-shaped outer annular edge of the sealing attachment of the grip portion, wherein the inner angular edge or the outer angular edge is coated with a sealing material. 33. Can end lid according to claim 31, wherein the grip portion of the opening tab has a circumferential flange that protrudes over the ring wall when the opening tab is in the sealing position thereof, and a detent is formed on the side of the breaking-away area facing away from the fixing stud, the detent protruding from an inner side of the peripheral wall of the lid plate and cooperating with the circumferential flange of the grip portion of the opening tab in a latching manner in the sealing position of the grip portion to hold down the sealing attachment in the recess, the detent pressed from an outside of the peripheral wall into the peripheral wall to extend in a circumferential direction of the peripheral wall along one of a limited circumferential length of the circumference of the peripheral wall and the total circumference of the peripheral wall. 34. Can end lid according to claim 33, wherein the break-away portion on the bottom of the recess is bordered by a ring-shaped inner angular edge, which, in the sealing position of the grip portion of the opening tab, is overlapped by a ring-shaped outer annular edge of the sealing attachment of the grip portion. 35. Can end lid according to claim 18, wherein the break-away portion is bordered by a ring-shaped inner angular edge, which, in the closing position of the grip portion of the opening tab, is overlapped by a ring-shaped outer annular edge of the sealing attachment of the grip portion. 36. Can end lid according to claim 29, wherein the grip portion in the closing rotating position of the opening tab extends close to the peripheral wall of the lid plate and is extended on either side thereof in an area adjacent to the peripheral wall. 37. Can end lid according to claim 34, wherein at least one arch shaped stiffening recess is formed into the lid plate on the side of the fixing stud facing away from the breaking-away area. 38. Drink can according to claim 20, wherein the grip portion of the opening tab has a circumferential flange that protrudes over the ring-wall when the opening tab is in the sealing position thereof, and a detent is formed on the side of the breaking-away area facing away from the fixing stud, the detent protruding from an inner side of the peripheral wall of the lid plate and cooperating with the circumferential flange of the grip portion of the opening tab in a latching manner in the sealing position of the grip portion to hold down the sealing attachment in the recess, the detent pressed from an outside of the peripheral wall into the peripheral wall to extend in a circumferential direction of the peripheral wall along one of a limited circumferential length of the circumference of the peripheral wall and the total circumference of the peripheral wall. 39. Drink can according to claim 38, wherein the break-away portion on the bottom of the recess is bordered by a ring-shaped inner angular edge, which, in the sealing position of the grip portion of the opening tab, is overlapped by a ring-shaped outer annular edge of the sealing attachment of the grip portion. 40. Drink can according to claim 39, wherein the peripheral wall of the lid plate is point symmetrical to an axis, and the inner surface of the ring-wall as to the height thereof extends in parallel to said axis at least in an upper portion of the ring-wall.
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