US3559874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Series bag construction
Assignee: PLASTIC FILMS Inc A CORP OF OH
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Filing: 1968-05-08
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Granted: 1971-02-02
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Expires: 1988-05-08
Abstract
Abstract A bag construction embodied in a chain of connected bag elements and an efficient method for filling the same. In novel feeding and mounting concepts, the chain of bag elements is preferably fed to the filling apparatus from a folded pile, and is initially received by a mandrel which mounts the same in a curtain-and-rodlike fashion by means of a loop or tunnel located along the top end of each bag. In the chain, the bag elements are substantially separated from one another such that their complete separation after filling can be easily achieved, as for example, by a gentle pulling action. In specific bag constructions, loading or filling through gusseted sections of the bag elements is made possible through novel gusset designs and filling methods, and scrap minimized, for example, by thinning strategic portions of the bag elements which later are customarily trimmed therefrom following sealing operations.
Inventors
- 👤 Oliver R Titchenal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:17
CPC Classifications
B; B65; B65B; B65B9/00; B65B9/06; B65B9/08; B65B9/087; B65B9/093
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
135 words
A chain of connected bag elements which when strung out define a longitudinal axis, each of said bag elements comprising bottom and top ends and two sides, and bag elements arranged in said chain in generally side-by-side relationship with said top and bottom ends extending in planar relationship with said longitudinal axis, each of said bag elements closed across the top and bottom ends thereof, said two sides closed except at the too uppermost extend thereof, thereby forming an open ended loop at the top end of each bag element, the channels defined by said loops being longitudinally aligned with each other and being of sufficient width such that said chain of bag elements can be mounted in a curtain-and-rod-like fashion by means of the loop located at the top end of each bag element.
Claim 2
Dependent Claim
135 words
A chain of connected bag elements which when strung out define a longitudinal axis, each of said bag elements comprising bottom and top ends and two sides, and bag elements arranged in said chain in generally side-by-side relationship with said top and bottom ends extending in planar relationship with said longitudinal axis, each of said bag elements closed across the top and bottom ends thereof, said two sides closed except at the too uppermost extend thereof, thereby forming an open ended loop at the top end of each bag element, the channels defined by said loops being longitudinally aligned with each other and being of sufficient width such that said chain of bag elements can be mounted in a curtain-and-rod-like fashion by means of the loop located at the top end of each bag element.
Claim 3
Dependent Claim
177 words
A chain of bag elements which when strung out defines a longitudinal axis, said bag elements comprising a tubular body flattened for to form first and second edge portions extending longitudinally thereon and first and second walls located opposite each other, said bag elements defined by seams extending generally transversely to said longitudinal axis and securing together said first and second walls at spaced intervals along said tubular body, respective pairs of said seams forming the two opposite sides of each bag element with said first and second edge portions comprising the respective top and bottom ends thereof, the uppermost extend extent of said side seams terminating at points in spaced relationship with the leading edge of said first edge portion, whereby the first edge portion forms an open ended loop at the top end of each bag element, the channels defined by said loops being generally longitudinally aligned with each other and being of a sufficient width so that said chain of bag elements can be mounted in a curtain-and-rod-like fashion by means of said loops.
Claim 4
Dependent Claim
177 words
A chain of bag elements which when strung out defines a longitudinal axis, said bag elements comprising a tubular body flattened for to form first and second edge portions extending longitudinally thereon and first and second walls located opposite each other, said bag elements defined by seams extending generally transversely to said longitudinal axis and securing together said first and second walls at spaced intervals along said tubular body, respective pairs of said seams forming the two opposite sides of each bag element with said first and second edge portions comprising the respective top and bottom ends thereof, the uppermost extend extent of said side seams terminating at points in spaced relationship with the leading edge of said first edge portion, whereby the first edge portion forms an open ended loop at the top end of each bag element, the channels defined by said loops being generally longitudinally aligned with each other and being of a sufficient width so that said chain of bag elements can be mounted in a curtain-and-rod-like fashion by means of said loops.
Claim 5
Dependent Claim
114 words
A chain of connected bag elements which when strung out defines a longitudinal axis, said bag elements including first and second opposed wall portions and being arranged in said chain in side-by-side relationship, a separate continuous strip of material connecting together said bag elements and extending parallel along said longitudinal axis, said strip secured together along one longitudinal edge thereof with said first wall portion, and topwise folded over and secured together along the opposite longitudinal edge thereof with said second wall portion the channel definite by said loop being continuous and communicating with the interiors of said bag elements, said channel being of sufficient size for mounting said bag elements in curtain-and-rod-like fashion.
Claim 6
Dependent Claim
114 words
A chain of connected bag elements which when strung out defines a longitudinal axis, said bag elements including first and second opposed wall portions and being arranged in said chain in side-by-side relationship, a separate continuous strip of material connecting together said bag elements and extending parallel along said longitudinal axis, said strip secured together along one longitudinal edge thereof with said first wall portion, and topwise folded over and secured together along the opposite longitudinal edge thereof with said second wall portion the channel definite by said loop being continuous and communicating with the interiors of said bag elements, said channel being of sufficient size for mounting said bag elements in curtain-and-rod-like fashion.
Claim 7
Dependent Claim
88 words
In a chain of containers of the general type connected together to permit continuous feed of the containers to filling apparatus, the containers being successIvely fillable at the top ends thereof between opposed portions of material forming the containers, the improvement which comprises, material substantially closing said top ends and joined together along its opposite longitudinal edges with said opposed portions, respectively, the longitudinally extending central portion of said material defining a noninterrupted guide channel of sufficient width to permit mounting of said chain in a curtain-and-rod-like fashion.
Claim 8
Dependent Claim
88 words
In a chain of containers of the general type connected together to permit continuous feed of the containers to filling apparatus, the containers being successIvely fillable at the top ends thereof between opposed portions of material forming the containers, the improvement which comprises, material substantially closing said top ends and joined together along its opposite longitudinal edges with said opposed portions, respectively, the longitudinally extending central portion of said material defining a noninterrupted guide channel of sufficient width to permit mounting of said chain in a curtain-and-rod-like fashion.
Claim 9
Dependent Claim
12 words
The containers of claim 4 wherein said containers comprise connected bag elements.
Claim 10
Dependent Claim
23 words
The containers of claim 5 wherein a line of weakness is located in the connected region between successive bag elements in said chain.
Claim 11
Dependent Claim
21 words
The containers of claim 5 wherein said bag elements include a gusset, a let of said gusset comprising said loop structure.
Claim 12
Dependent Claim
17 words
The containers of claim 7 wherein said leg is offset beyond the opposite leg of said gusset.
Claim 13
Dependent Claim
34 words
The containers of claim 5 wherein said bag elements include gussets extending along the opposite sides thereof, respectively, said loop structure being located adjacent a common end of each of said bag elements, respectively.
Claim 14
Dependent Claim
99 words
The bag elements of claim 5 wherein said bag elements comprise at least two layers of material, at least one of said layers comprising material porous to the passage of air, said bag elements including means to permit air to pass from the interior of said bag elements through said porous layer and to the space exterior of the bag elements. 11 the bag elements of claim 10 wherein said porous layer comprises the innermost layer of said bag elements, and wherein said means comprises apertures formed in a layer of said bag elements exterior to said innermost layer.
Claim 15
Dependent Claim
145 words
In containers of the general type including opposite side and opposed portions of material extending between its opposite sides such that the containers are fillable through the area between the opposed portions, and wherein the containers are side-by-side connected together to form a chain of containers, the improvement which comprises, and open ended loop associated with the top end of each container and comprising material extending between and joined together with said opposed portions, respectively, said loops being of sufficient size for mounting said containers in a curtain-and-rod-like fashion, the channel defined collectively by said loops being uninterrupted along the longitudinally extending central region of the loops so that said central region is slip slittable longitudinally to form freely spreadable flaps of generally equal height between which said containers can be progressively filled. 13 The containers of claim 12 wherein said containers comprise bag elements.
Claim 16
Dependent Claim
108 words
The containers of claim 13 wherein the material comprising said loop is continuous. 15 A chain of containers connected together in successive fashion, said chain including a tunnel extending longitudinally thereon, the channel defined by said tunnel communicating from container to container and further communicating with the interior of said containers said channel extending longitudinally contiguous with an upper longitudinal edge of said chain so that said tunnel is slittable longitudinally generally along the midregion thereof to form freely spreadably flap portions of generally equal height between which the containers can be progressively filled, said channel being of sufficient size for mounting said containers in a curtain-and-rod-like manner.
Claim 17
Dependent Claim
11 words
The containers of claim 15 wherein said containers comprise bag elements.
Claim 18
Dependent Claim
23 words
The containers of claim 16 wherein said tunnel includes cutout portions whereby said tunnel is divided into segments associated with said containers, respectively.
Claim 19
Dependent Claim
18 words
The containers of claim 17 wherein a strip of material connects between successive tunnel segments in said chain.
Claim 20
Dependent Claim
29 words
The bag elements of claim 5 wherein at least a portion of said loop structure is of less thickness that than a region of said bag elements remote therEfrom.
Claim 21
Dependent Claim
17 words
The bag elements of claim 7 wherein said loop is parted and comprised comprises freely spreadably flaps.
Claim 22
Dependent Claim
16 words
The bag elements of claim 9 wherein said loop is parted and comprises freely spreadably flaps.
Claim 23
Dependent Claim
16 words
The bag elements of claim 19 wherein said loop is parted and comprises freely spreadable flaps.
Claim 24
Dependent Claim
16 words
The bag elements of claim 10 wherein said loop is parted and comprises freely spreadably flaps.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |