US4603537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making a bag with a bag mouth closure
Assignee: Formost Packaging Machines Inc
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Filing: 1985-03-25
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Granted: 1986-08-05
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Expires: 2005-03-25
Abstract
Abstract In making a reclosable plastic film bag, bag mouth lips are formed projecting beyond a heat-seal band closing the bag mouth and a stiffening patch is bonded to the interior or exterior of a bag mouth lip between the heat-sealing band and the bag mouth end. The stiffening patches for the reclosable bag mouth end can be applied to a strip of sheet material for making bags at the time that the bags are formed and filled by clipping from a strip of patch-making material patch pieces having pressure-sensitive adhesive on one side. Such patch pieces are transferred from a clipper onto the bag-making material by a revolving transfer member having a suction pick-up to pick up a patch piece and a blow subsequently detaches the patch piece from the transfer member and deposits it onto the strip of bag-making material.
Inventors
- 👤 Vincent C. Pace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:39
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/16; B65D33/30; B31; B31B; B31B50/00; B31B50/74; B31B50/81; B31B50/812; B31B50/8122; Y; Y10; Y10S; Y10S383/00; Y10S383/905; Y10S493/00; Y10S493/916; Y10S493/927
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
246 words
The process of making reclosable bags which comprises moving bag-making sheet material lengthwise, adhesively applying to such bag-making sheet material stiffening patches at predetermined intervals lengthwise of the direction of movement of the bag-making sheet material, forming the bag-making sheet material into a tube, inserting into the tube between the stiffening patches product to be packaged, sealing the tube at both sides of each patch to form spaced seals with each seal located adjacent to a stiffening patch and between such patch and adjacent product received in the tube, severing the tube along a cutting line between a seal and an adjacent stiffening patch carried by the bag material to form two adjacent ends of two adjacent bags with the seal adjacent to such cutting line entirely on the adjacent end of a first bag and the adjacent stiffening patch carried entirely by the adjacent end of a second bag, thereby enabling subsequent parting of the parts of the seal of the second bag between the stiffening patch carried thereby and the product in such second bag and thereby opening the second bag to afford access to the product therein through the bag end carrying the stiffening patch and enabling manual bending of the stiffening patch carried by such bag end and the sheet material to which such stiffening patch is applied about a straight line parallel to the ends of the second bag for reclosing the end of the second bag carrying the stiffening patch.
Claim 2
Dependent Claim
246 words
The process of making reclosable bags which comprises moving bag-making sheet material lengthwise, adhesively applying to such bag-making sheet material stiffening patches at predetermined intervals lengthwise of the direction of movement of the bag-making sheet material, forming the bag-making sheet material into a tube, inserting into the tube between the stiffening patches product to be packaged, sealing the tube at both sides of each patch to form spaced seals with each seal located adjacent to a stiffening patch and between such patch and adjacent product received in the tube, severing the tube along a cutting line between a seal and an adjacent stiffening patch carried by the bag material to form two adjacent ends of two adjacent bags with the seal adjacent to such cutting line entirely on the adjacent end of a first bag and the adjacent stiffening patch carried entirely by the adjacent end of a second bag, thereby enabling subsequent parting of the parts of the seal of the second bag between the stiffening patch carried thereby and the product in such second bag and thereby opening the second bag to afford access to the product therein through the bag end carrying the stiffening patch and enabling manual bending of the stiffening patch carried by such bag end and the sheet material to which such stiffening patch is applied about a straight line parallel to the ends of the second bag for reclosing the end of the second bag carrying the stiffening patch.
Claim 3
Dependent Claim
74 words
The process defined in claim 1, in which one of the seals located adjacent to each stiffening patch is stronger than the other seal located adjacent to such stiffening patch, and each tube cutting line is located between a stiffening patch and the stronger seal adjacent to such patch for separating the tube into individual bags with each weaker seal located between the patch carried by such bag and the product in such bag.
Claim 4
Dependent Claim
242 words
The process of making reclosable bags which comprises moving bag-making sheet material lengthwise, adhesively applying to such bag-making sheet material stiffening patches at predetermined intervals lengthwise of the direction of movement of the bag-making sheet material, forming the bag-making sheet material into a tube, inserting into the tube between the stiffening patches product to be packaged, sealing the tube at both sides of each patch to form spaced seals with each seal located adjacent to a stiffening patch and between such stiffening patch and adjacent product received in the tube, severing the tube along a cutting line between a seal and an adjacent stiffening patch carried by the bag material to form two adjacent ends of two adjacent bags with the seal adjacent to such cutting line entirely on the adjacent end of a first bag and the adjacent stiffening patch carried entirely by the adjacent end of a second bag, subsequently parting the parts of the seal of the second bag between the stiffening patch carried thereby and the product in such second bag and thereby opening the second bag to afford access to the product therein through the bag end carrying the stiffening patch, and manually bending the stiffening patch carried by such bag end and the sheet material to which such stiffening patch is aplied about a straight line parallel to the ends of the second bag for reclosing the end of the second bag carrying the stiffening patch.
Claim 5
Dependent Claim
242 words
The process of making reclosable bags which comprises moving bag-making sheet material lengthwise, adhesively applying to such bag-making sheet material stiffening patches at predetermined intervals lengthwise of the direction of movement of the bag-making sheet material, forming the bag-making sheet material into a tube, inserting into the tube between the stiffening patches product to be packaged, sealing the tube at both sides of each patch to form spaced seals with each seal located adjacent to a stiffening patch and between such stiffening patch and adjacent product received in the tube, severing the tube along a cutting line between a seal and an adjacent stiffening patch carried by the bag material to form two adjacent ends of two adjacent bags with the seal adjacent to such cutting line entirely on the adjacent end of a first bag and the adjacent stiffening patch carried entirely by the adjacent end of a second bag, subsequently parting the parts of the seal of the second bag between the stiffening patch carried thereby and the product in such second bag and thereby opening the second bag to afford access to the product therein through the bag end carrying the stiffening patch, and manually bending the stiffening patch carried by such bag end and the sheet material to which such stiffening patch is aplied about a straight line parallel to the ends of the second bag for reclosing the end of the second bag carrying the stiffening patch.
References Cited (Backward Citations)
US220510A
Cited
US2260064A
Cited
US3353662A
Cited
US3504475A
Cited
US3554436A
Cited
US3553933A
Cited
US3618850A
Cited
US3764060A
Cited
US4288967A
Cited
US4288968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-04 | 1990-02-03 | 1990-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-04 | 1994-02-03 | 1994-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-04 | 1998-02-03 | 1998-08-05 | $7700.00 | Window Closed / Lapsed |