US3910488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gusseted pinch bottom breakaway pouch bag
Assignee: Stone Container Corp
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Filing: 1974-04-12
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Granted: 1975-10-07
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Expires: 1994-04-12
Abstract
Abstract A bag of tubular form open at one end and closed at the other end, comprising a plurality of contiguous plies of paper bonded together adjacent each of said ends, and an innermost ply of heat sealable plastic material lightly bonded adjacent said bag ends to the contiguous paper ply for manual detachment therefrom, said bag being longitudinally and reversely creased along diametrically opposed portions to provide a pair of oppositely disposed gussets interposed between front and rear wall portions, at least some of the inner plies being stepped progressively upward with respect to the outer ply in the front wall portion at the open bag end, at least the outermost ply being stepped upwardly with respect to the innermost ply in the rear wall portion at the open bag end to provide an exposed overlap rear wall portion with respect to the innermost ply of said front wall portion, at least portions of said gussets terminating at said open bag end within said overlap to provide exposed portions thereof, said overlap rear wall and exposed gusset portions being coated with an adhesive at said open bag end, the bag construction at said closed end being the reverse of that at the open end said plastic ply being heat sealed to closure adjacent said closed bag end, the bag closure at said end being otherwise completed by coating the exposed overlapping rear wall portion and exposed gusset portions with an adhesive and folding over with said sealed end of said plastic ply and sealed to closure against the opposite wall portion, said bonding together of said paper plies at said end thereby imparting to said closure the combined strength of all such plies, the open end of said bag being adapted for heat sealing of said plastic ply and closure similarly to that of said closed end and said bag when so closed at both ends being sift and leak proof and resistant to insect penetration, and being adapted for opening of said paper plies and removal of said plastic ply intact.
Inventors
- 👤 John J Goodrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:05
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/02; B65D75/00; B65D75/52; B65D75/58; B65D75/66; B65D75/68
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
344 words
A bag of tubular form open at one end and closed at the other end, comprising a plurality of contiguous plies of flexible sheet material bonded together adjacent each of said ends, and an innermost ply of heat sealable plastic material lightly bonded adjacent said bag ends to the contiguous paper ply for manual detachment therefrom, said bag being longitudinally and reversely creased along diametrically opposed portions to provide a pair of oppositely disposed gussets interposed between front and rear wall portions, at least some of the inner plies being stepped progressively upward with respect to the outer ply in the front wall portion at the open bag end, at least the outermost ply being stepped upwardly with respect to the innermost ply in the rear wall portion at the open bag end to provide an exposed overlap rear wall portion with respect to the innermost Ply of said front wall portion, at least portions of said gussets extending above said front wall portion at said open bag end and terminating within said overlap rear wall portion to provide exposed portions of said gussets, said overlap rear wall and exposed gusset portions being coated with a reactivatable adhesive at said open bag end, the bag construction at said closed end being the reverse of that at the open end, said plastic ply being heat sealed to closure adjacent said closed end, the exposed overlapping rear wall portion and exposed gusset portions thereat being folded over with said heat sealed end of said plastic ply and sealed to closure against the opposite wall portion, said bonding together of said paper plies at said end thereby imparting to said closure the combined strength of all such plies, the open end of said bag being adapted for heat sealing of said plastic ply and closure similarly to that of said closed end and said bag when so closed at both ends being sift and leak proof, and resistant to insect penetration and being adapted for opening of said paper plies and removal of said plastic ply intact.
Claim 2
Dependent Claim
344 words
A bag of tubular form open at one end and closed at the other end, comprising a plurality of contiguous plies of flexible sheet material bonded together adjacent each of said ends, and an innermost ply of heat sealable plastic material lightly bonded adjacent said bag ends to the contiguous paper ply for manual detachment therefrom, said bag being longitudinally and reversely creased along diametrically opposed portions to provide a pair of oppositely disposed gussets interposed between front and rear wall portions, at least some of the inner plies being stepped progressively upward with respect to the outer ply in the front wall portion at the open bag end, at least the outermost ply being stepped upwardly with respect to the innermost ply in the rear wall portion at the open bag end to provide an exposed overlap rear wall portion with respect to the innermost Ply of said front wall portion, at least portions of said gussets extending above said front wall portion at said open bag end and terminating within said overlap rear wall portion to provide exposed portions of said gussets, said overlap rear wall and exposed gusset portions being coated with a reactivatable adhesive at said open bag end, the bag construction at said closed end being the reverse of that at the open end, said plastic ply being heat sealed to closure adjacent said closed end, the exposed overlapping rear wall portion and exposed gusset portions thereat being folded over with said heat sealed end of said plastic ply and sealed to closure against the opposite wall portion, said bonding together of said paper plies at said end thereby imparting to said closure the combined strength of all such plies, the open end of said bag being adapted for heat sealing of said plastic ply and closure similarly to that of said closed end and said bag when so closed at both ends being sift and leak proof, and resistant to insect penetration and being adapted for opening of said paper plies and removal of said plastic ply intact.
Claim 3
Dependent Claim
369 words
A bag of tubular form open at one end and closed at the other end, comprising a plurality of outer contiguous plies of flexible sheet material bonded together at each of said ends, but being otherwise detached from one another, and an innermost ply of heat sealable plastic material lightly bonded adjacent said bag ends to the contiguous outer ply for manual detachment therefrom, said bag being longitudinally and reversely creased along diametrically opposed portions to provide a pair of oppositely disposed gussets interposed between front and rear wall portions, at least some of the inner plies being stepped progressively upward with respect to the outermost ply in the front wall portion at the open bag end, at least some of the outer plies being stepped progressively upward with respect to the innermost ply in the rear wall portion at the open bag end and said rear wall portion extending above said front wall portion at said end to provide an exposed overlap rear wall portion with respect to said front wall portion, at least the rear portions of said gussets extending above said front wall portion at said end and terminating within said overlap rear wall portion to provide exposed portions of said gussets, said exposed rear wall overlap portion and exposed gusset portions being coated with a heat reactive adhesive in a dormant state at said open bag end, the bag construction at said closed end being reverse of that at the open end, said plastic ply being heat sealed to closure adjacent said closed end, and the overlapping rear wall portion and exposed gusset portions thereat being folded over with said sealed end at said plastic ply and sealed to closure against the opposite wall portion, said bonding together of said plies at said end thereby imparting to said closure the combined strength of all said plies, the open end of said bag being adapted for heat sealing of said plastic ply and closure similarly to that of said closed end, and said bag when so closed at both ends being sift and leak proof and resistant to insect penetration, and being adapted for opening of said paper plies and removal of said plastic ply intact.
Claim 4
Dependent Claim
369 words
A bag of tubular form open at one end and closed at the other end, comprising a plurality of outer contiguous plies of flexible sheet material bonded together at each of said ends, but being otherwise detached from one another, and an innermost ply of heat sealable plastic material lightly bonded adjacent said bag ends to the contiguous outer ply for manual detachment therefrom, said bag being longitudinally and reversely creased along diametrically opposed portions to provide a pair of oppositely disposed gussets interposed between front and rear wall portions, at least some of the inner plies being stepped progressively upward with respect to the outermost ply in the front wall portion at the open bag end, at least some of the outer plies being stepped progressively upward with respect to the innermost ply in the rear wall portion at the open bag end and said rear wall portion extending above said front wall portion at said end to provide an exposed overlap rear wall portion with respect to said front wall portion, at least the rear portions of said gussets extending above said front wall portion at said end and terminating within said overlap rear wall portion to provide exposed portions of said gussets, said exposed rear wall overlap portion and exposed gusset portions being coated with a heat reactive adhesive in a dormant state at said open bag end, the bag construction at said closed end being reverse of that at the open end, said plastic ply being heat sealed to closure adjacent said closed end, and the overlapping rear wall portion and exposed gusset portions thereat being folded over with said sealed end at said plastic ply and sealed to closure against the opposite wall portion, said bonding together of said plies at said end thereby imparting to said closure the combined strength of all said plies, the open end of said bag being adapted for heat sealing of said plastic ply and closure similarly to that of said closed end, and said bag when so closed at both ends being sift and leak proof and resistant to insect penetration, and being adapted for opening of said paper plies and removal of said plastic ply intact.
Claim 5
Dependent Claim
366 words
A bag of tubular form open at one end and closed at the other end, comprising a plurality of at least three outer plies of flexible sheet material bonded together at said ends, respectively, but being otherwise detached from one another, and an innermost ply of heat sealable plastic material lightly bonded adjacent said bag ends to the contiguous outer ply for manual detachment therefrom, said bag being longitudinally and reversely creased along diametrically opposed portions to provide a pair of oppositely disposed gussets interposed between front and rear wall portions, at least some inner plies being stepped progressively upward with respect to the outer ply in the front wall portion at the open bag end, at least some Of said plies being stepped progressively upward with respect to the innermost ply in the rear wall portion at said bag end said rear wall portion extending above said front wall portion at said end to provide an exposed overlap rear wall portion with respect to said front wall portion, said gussets extending above said front wall portion and terminating at said open bag end within said overlap rear wall portion, and the rear portions of said gussets being stepped upwardly with respect to the front portions thereof to provide exposed front and rear gusset portions thereof, said exposed overlap rear wall portion and said exposed gusset portions being coated with a heat reactivatable adhesive in a dormant state at said open bag end, the bag construction at said closed end being the reverse of that at the open end, said plastic ply being heat sealed to closure adjacent said closed end, and the exposed overlapping rear wall portion and exposed gusset portions thereat being folded over with said sealed end of said plastic ply and sealed against the opposite wall portion, said bonding together of said plies at said end thereby imparting to said closure the combined strength of all said plies, the open end of said bag being adapted for heat sealing of said plastic ply and closure similarly to that of said closed end, said bag when so closed at both ends being sift proof and leak proof throughout and resistant to insect penetration.
Claim 6
Dependent Claim
366 words
A bag of tubular form open at one end and closed at the other end, comprising a plurality of at least three outer plies of flexible sheet material bonded together at said ends, respectively, but being otherwise detached from one another, and an innermost ply of heat sealable plastic material lightly bonded adjacent said bag ends to the contiguous outer ply for manual detachment therefrom, said bag being longitudinally and reversely creased along diametrically opposed portions to provide a pair of oppositely disposed gussets interposed between front and rear wall portions, at least some inner plies being stepped progressively upward with respect to the outer ply in the front wall portion at the open bag end, at least some Of said plies being stepped progressively upward with respect to the innermost ply in the rear wall portion at said bag end said rear wall portion extending above said front wall portion at said end to provide an exposed overlap rear wall portion with respect to said front wall portion, said gussets extending above said front wall portion and terminating at said open bag end within said overlap rear wall portion, and the rear portions of said gussets being stepped upwardly with respect to the front portions thereof to provide exposed front and rear gusset portions thereof, said exposed overlap rear wall portion and said exposed gusset portions being coated with a heat reactivatable adhesive in a dormant state at said open bag end, the bag construction at said closed end being the reverse of that at the open end, said plastic ply being heat sealed to closure adjacent said closed end, and the exposed overlapping rear wall portion and exposed gusset portions thereat being folded over with said sealed end of said plastic ply and sealed against the opposite wall portion, said bonding together of said plies at said end thereby imparting to said closure the combined strength of all said plies, the open end of said bag being adapted for heat sealing of said plastic ply and closure similarly to that of said closed end, said bag when so closed at both ends being sift proof and leak proof throughout and resistant to insect penetration.
Claim 7
Dependent Claim
368 words
A bag of tubular form comprising a plurality of at least three outer plies of flexible sheet material bonded together at each end thereof, and an innermost ply of heat sealable plastic material lightly bonded adjacent said bag ends to the contiguous outer ply for manual detachment therefrom, said bag having a front surface and an oppositely disposed rear surface extending beyond and overlapping said front surface at said open end of said tube when said bag is in its assembled condition, said bag being longitudinally and reversely creased along diametrically opposed portions to provide a pair of oppositely disposed gussets interposed between said front and rear surfaces, each of said gussets having an exposed front portion and an exposed stepped rear portion adapted to overlap said front portion within the overlapped area of said front and rear surfaces at said one end of the tube when said bag is in its assembled condition, at least some of the bag plies being stepped one beyond another at said end in each of said front and rear surfaces to provide exposed portions thereof, at least some of said bag plies being stepped one beyond another in each of said front and rear gusset portions at said one end of said tube, a bonding agent in a dormant state applied to said exposed gusset portions and over said overlap portion of said rear surface at said one end of said bag, the bag construction at said closed end being the reverse of that at said open end, said plastic ply being heat sealed to closure adjacent said closed end, and the overlap rear surface portion and exposed gusset portions thereat being folded over with said sealed end of said plastic ply and sealed to closure against the opposite surface portion, said bonding together of said plies thereat thereby imparting to said closure the combined strength of all said plies, the opposite end of said bag being the reverse of said one end and adapted for heat sealing of said plastic ply and closure similarly to that of said closed end, and said bag when so closed at both ends being leak proof, sift proof and impervious to insect penetration throughout.
Claim 8
Dependent Claim
368 words
A bag of tubular form comprising a plurality of at least three outer plies of flexible sheet material bonded together at each end thereof, and an innermost ply of heat sealable plastic material lightly bonded adjacent said bag ends to the contiguous outer ply for manual detachment therefrom, said bag having a front surface and an oppositely disposed rear surface extending beyond and overlapping said front surface at said open end of said tube when said bag is in its assembled condition, said bag being longitudinally and reversely creased along diametrically opposed portions to provide a pair of oppositely disposed gussets interposed between said front and rear surfaces, each of said gussets having an exposed front portion and an exposed stepped rear portion adapted to overlap said front portion within the overlapped area of said front and rear surfaces at said one end of the tube when said bag is in its assembled condition, at least some of the bag plies being stepped one beyond another at said end in each of said front and rear surfaces to provide exposed portions thereof, at least some of said bag plies being stepped one beyond another in each of said front and rear gusset portions at said one end of said tube, a bonding agent in a dormant state applied to said exposed gusset portions and over said overlap portion of said rear surface at said one end of said bag, the bag construction at said closed end being the reverse of that at said open end, said plastic ply being heat sealed to closure adjacent said closed end, and the overlap rear surface portion and exposed gusset portions thereat being folded over with said sealed end of said plastic ply and sealed to closure against the opposite surface portion, said bonding together of said plies thereat thereby imparting to said closure the combined strength of all said plies, the opposite end of said bag being the reverse of said one end and adapted for heat sealing of said plastic ply and closure similarly to that of said closed end, and said bag when so closed at both ends being leak proof, sift proof and impervious to insect penetration throughout.
Claim 9
Dependent Claim
312 words
A bag of tubular form open at one end and closed at the other end, comprising a plurality of at least three contiguous plies of paper bonded together adjacent said ends, and an innermost ply of heat sealable plastic material lightly bonded adjacent said bag ends to the contiguous paper ply for manual detachment therefrom, said bag being longitudinally and reversely creased along diametrically opposed portions to provide a pair of oppositely disposed gusseTs interposed between front and rear wall portions, said rear wall portion being stepped upwardly at said open bag end beyond said front wall portion to provide an exposed overlap rear wall portion thereof, at least some of said plies being progressively stepped in each of said front and rear wall portions at said end of said bag, said gussets extending at said open bag end beyond said front wall portion and terminating within said rear wall overlap portion, to provide exposed front portions and exposed stepped up rear portions of said gussets, said exposed overlap rear wall portion and said exposed gusset portions being coated with a reactivatable adhesive, said closed bag end being the reverse of said open bag end, said plastic ply being heat sealed to closure adjacent said closed end, and the overlapping portion thereat being folded over with said sealed end of said plastic ply and sealed to closure against the opposite wall portion, said bonding together of said plies at said end thereby imparting to said closure the combined strength of all said plies, the open end of said bag being adapted for heat sealing of said plastic ply and closure similarly to that of said closed end, and said bag when so closed at both ends being sift and leak proof and resistant to insect penetration, and being adapted for opening of said paper plies and removal of said plastic ply intact.
Claim 10
Dependent Claim
312 words
A bag of tubular form open at one end and closed at the other end, comprising a plurality of at least three contiguous plies of paper bonded together adjacent said ends, and an innermost ply of heat sealable plastic material lightly bonded adjacent said bag ends to the contiguous paper ply for manual detachment therefrom, said bag being longitudinally and reversely creased along diametrically opposed portions to provide a pair of oppositely disposed gusseTs interposed between front and rear wall portions, said rear wall portion being stepped upwardly at said open bag end beyond said front wall portion to provide an exposed overlap rear wall portion thereof, at least some of said plies being progressively stepped in each of said front and rear wall portions at said end of said bag, said gussets extending at said open bag end beyond said front wall portion and terminating within said rear wall overlap portion, to provide exposed front portions and exposed stepped up rear portions of said gussets, said exposed overlap rear wall portion and said exposed gusset portions being coated with a reactivatable adhesive, said closed bag end being the reverse of said open bag end, said plastic ply being heat sealed to closure adjacent said closed end, and the overlapping portion thereat being folded over with said sealed end of said plastic ply and sealed to closure against the opposite wall portion, said bonding together of said plies at said end thereby imparting to said closure the combined strength of all said plies, the open end of said bag being adapted for heat sealing of said plastic ply and closure similarly to that of said closed end, and said bag when so closed at both ends being sift and leak proof and resistant to insect penetration, and being adapted for opening of said paper plies and removal of said plastic ply intact.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |