US3329260A - Stacked bags - Google Patents

Stacked bags Download PDF

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Publication number
US3329260A
US3329260A US555498A US55549866A US3329260A US 3329260 A US3329260 A US 3329260A US 555498 A US555498 A US 555498A US 55549866 A US55549866 A US 55549866A US 3329260 A US3329260 A US 3329260A
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United States
Prior art keywords
bag
openings
bags
wicket
stack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US555498A
Inventor
William R Medleycott
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Superpac Inc
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Superpac Inc
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Filing date
Publication date
Application filed by Superpac Inc filed Critical Superpac Inc
Priority to US555498A priority Critical patent/US3329260A/en
Application granted granted Critical
Publication of US3329260A publication Critical patent/US3329260A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/001—Blocks, stacks or like assemblies of bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride

Definitions

  • FIGURE 1 is a partially diagrammatic side elevation of bag loading apparatus employing a bagstack in accordance with the invention
  • FIGURE 2 is a plan View of the bag stack and the loaded bag shown in FIGURE l;
  • FIGURE 3 is an enlarged front elevation, partially broken away, .of the bag stack of FIGURE 1 showing the bound portion of a bag stack being removed after all of the bags have been employed;
  • FIGURE 4 is a plan View, partially broken away, of the operation shown in FIGURE 3.
  • each bag stack 2 in accordance with the invention comprises a plurality of sealable plastic bags 4 of, for example, a thermoplastic lm which can be heat sealed using a heated tool, ultrasonics or high frequency electric sealing such as a polyolen, for example, polyethylene or polypropylene or a vinyl resin such as polyvinyl chloride.
  • Each bag 4 has a top panel 6 and a bottom panel 8 formed from a single sheet and each sealed together along one side as indicated by the line 10 and along the opposite side (not shown). Bag 4 is provided with a gusseted bottom 12 which is not shown in detail. As thus described, the bags are Well known to the art.
  • Rear panel 8 is provided with a binder portion 14 which extends substantially beyond the open end of the bag.
  • Binder portion 14 is provided with a pair of substantially circular openings 16 and 18 to accommodate a U-shaped retaining wicket 20. Openings 16 and 18 communicate with narrow slots 22 and 24 respectively which extend to the side edges of binder portion 14.
  • the bottom panels 8 in each stack 2 are each sealed together adjacent openings 22 and 24 and toward the bag body as indicated at 30 and 32 respectively in order to facilitate the opening and loading of the bags. Additionally, the back panels 8 are heat sealed together between openings 16 and 18 and the outer end of panel 8 along a strip indicated at 34.
  • a weakened tear line 36 which, for example, may be perforated separates the binder portion 14 of bottom panel 8 from the remainder thereof.
  • FIGURE 1 Operation lReferring now particularly to FIGURE 1, the use of bag stacks 2 in accordance with the invention is illustrated.
  • the bag stacks are mounted on an upwardly biased platform 40 which urges the stacks 2 upwardly on wicket 20.
  • a nozzle 42 directs a jet of air against the uppermost bag 4 in such a manner as to permit the air to inflate and open up this bag.
  • a tray 44 containing, for example, dinner rolls 46 is advanced into the open end ofbag 4 until it is abutting against the bottom 12.
  • the entry of tray 44 into bag 4 is greatly facilitated by the holding down of panel 8 by the heat sealed areas 30 and 32 which insure that the Width of the open end is suicientto receive tray 44.
  • tray 44 After the tray 44 abuts against bottom 12 it is further advanced in a direction away from binder portion 14 which causes the severance of bag 4 from binder portion 14 along the weakened line 36.
  • a bag stack of heat sealing plastic bags having open ends comprising:
  • each bag having a front panel, and a rear panel having a portion extending beyond the front panel adjacent the open end of the bag,
  • each rear panel having a pair of wicket openings for the receipt of a holding wicket and a tear line between said openings and the open end of the bag
  • each rear panel having a narrow opening extending respectively to the adjacent side thereof from each opening.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Description

july 4 1957 w. R. MEDLEYCOTT 3,329,260
STACKED BAGS FIG. 3.
Filed June 6, 1966 INVENiTOR WILLIAM R. MEDLEYCOTT I. l a'.
FIG.Z.
United States Patent O 3,329,260 STACKED BAGS William R. Medleycott, Willingboro, NJ., assignor to Superpac, Inc., Warrington, Ia., a corporation of Penn- Sylvania Filed June 6, 1966, Ser. No. 555,498 4 Claims. (Cl. 206-57) This invention relates to stacked bags and more particularly relates to a stack of bags suitable for use in automatic bag loading operations.
It is well known to employ a stack of bags in an automatic loading operation wherein each bag is automatically opened by, for example, an air jet, the merchandise to be bagged is conveyed into the bag and the bag is severed from the remaining bags in the stack. Conventionally the bags in the stack are held together by means of staples. Such an arrangement has a number of disadvantages with the primary one being in connection with food products where there is a danger that a staple will come loose and be included with the packaged food products. It is therefore an object of this invention to improve on the conventionally employed bag stack and particularly to eliminate the possibility of a staple being included with the packaged material by eliminating the use of staples.
The invention will be clarified `on reading the following description in conjunction with the drawings in which:
FIGURE 1 is a partially diagrammatic side elevation of bag loading apparatus employing a bagstack in accordance with the invention;
FIGURE 2 is a plan View of the bag stack and the loaded bag shown in FIGURE l;
FIGURE 3 is an enlarged front elevation, partially broken away, .of the bag stack of FIGURE 1 showing the bound portion of a bag stack being removed after all of the bags have been employed; and
FIGURE 4 is a plan View, partially broken away, of the operation shown in FIGURE 3.
As shown in the drawings each bag stack 2 in accordance with the invention comprises a plurality of sealable plastic bags 4 of, for example, a thermoplastic lm which can be heat sealed using a heated tool, ultrasonics or high frequency electric sealing such as a polyolen, for example, polyethylene or polypropylene or a vinyl resin such as polyvinyl chloride. Each bag 4 has a top panel 6 and a bottom panel 8 formed from a single sheet and each sealed together along one side as indicated by the line 10 and along the opposite side (not shown). Bag 4 is provided with a gusseted bottom 12 which is not shown in detail. As thus described, the bags are Well known to the art.
Rear panel 8 is provided with a binder portion 14 which extends substantially beyond the open end of the bag. Binder portion 14 is provided with a pair of substantially circular openings 16 and 18 to accommodate a U-shaped retaining wicket 20. Openings 16 and 18 communicate with narrow slots 22 and 24 respectively which extend to the side edges of binder portion 14.
The bottom panels 8 in each stack 2 are each sealed together adjacent openings 22 and 24 and toward the bag body as indicated at 30 and 32 respectively in order to facilitate the opening and loading of the bags. Additionally, the back panels 8 are heat sealed together between openings 16 and 18 and the outer end of panel 8 along a strip indicated at 34. A weakened tear line 36 which, for example, may be perforated separates the binder portion 14 of bottom panel 8 from the remainder thereof.
Operation lReferring now particularly to FIGURE 1, the use of bag stacks 2 in accordance with the invention is illustrated. The bag stacks are mounted on an upwardly biased platform 40 which urges the stacks 2 upwardly on wicket 20. A nozzle 42 directs a jet of air against the uppermost bag 4 in such a manner as to permit the air to inflate and open up this bag. A tray 44 containing, for example, dinner rolls 46 is advanced into the open end ofbag 4 until it is abutting against the bottom 12. The entry of tray 44 into bag 4 is greatly facilitated by the holding down of panel 8 by the heat sealed areas 30 and 32 which insure that the Width of the open end is suicientto receive tray 44.
After the tray 44 abuts against bottom 12 it is further advanced in a direction away from binder portion 14 which causes the severance of bag 4 from binder portion 14 along the weakened line 36.
After all of the bags in the uppermost stack 2 have been employed, it is important to remove the binder portion 14 otherwise succeeding stack 2 will be malpositioned with respect to nozzle 42 at the line of introduction of tray 44. As shown in FIGIURES 3 and 4 the binder portion 14 is easily removed by simply moving it outwardly away from wicket 20 by virtue of the presence of the slit openings 22 and 24 which permit the folding of the binder portion as it is withdrawing as best seen in FIG- URE 4.
It will be understood that the above described embodiment is merely by way of illustration and is not intended to be limiting.
What is claimed is:
1. A bag stack of heat sealing plastic bags having open ends comprising:
a plurality of stacked bags having their open ends aligned, each bag having a front panel, and a rear panel having a portion extending beyond the front panel adjacent the open end of the bag,
said portion of each rear panel having a pair of wicket openings for the receipt of a holding wicket and a tear line between said openings and the open end of the bag,
`said portions of the rear panels being heat sealed together along a line between said wicket openings and the outer end of the rear panel, and
each rear panel having a narrow opening extending respectively to the adjacent side thereof from each opening.
2. The bag stack of claim 1 in which the openings extending to the sides are slots.
3. The bag stack of claim 1 in which the said portions of the rear panels are heat sealed between said tear line and said narrow openings.
4. The bag stack of claim 2 in which the said portions of the rear panels are heat sealed between said tear line and said slot openings.

Claims (1)

1. A BAG STACK OF HEAT SEALING PLASTIC BAGS HAVING OPEN ENDS COMPRISING: A PLURALITY OF STACKED BAGS HAVING THEIR OPEN ENDS ALIGNED, EACH BAG HAVING A FRONT PANEL, AND A REAR PANEL HAVING A PORTION EXTENDING BEYOND THE FRONT PANEL ADJACENT THE OPEN END OF THE BAG, SAID PORTION OF EACH REAR PANEL HAVING A PAIR OF WICKET OPENINGS FOR THE RECEIPT OF A HOLDING WICKET AND A TEAR LINE BETWEEN SAID OPENINGS AND THE OPEN END OF THE BAG, SAID PORTIONS OF THE REAR PANELS BEING HEAT SEALED TOGETHER ALONG A LINE BETWEEN SAID WICKET OPENINGS AND THE OUTER END OF THE REAR PANEL, AND EACH REAR PANEL HAVING A NARROW OPENING EXTENDING RESPECTIVELY TO THE ADJACENT SIDE THEREOF FROM EACH OPENING.
US555498A 1966-06-06 1966-06-06 Stacked bags Expired - Lifetime US3329260A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768230A (en) * 1972-09-18 1973-10-30 E Bruno Container cover and method of affixing same
US3791267A (en) * 1972-11-27 1974-02-12 Aberdeen Bag Co Method and apparatus for making packages of interconnected plastic bags and the like
US3886850A (en) * 1973-05-23 1975-06-03 Midland Ross Corp Method of forming flat bottoms on bags of creasable material
US3893382A (en) * 1972-11-07 1975-07-08 Windmoeller & Hoelscher Process and apparatus for manufacturing pads of bags made of synthetic thermoplastics
FR2358279A1 (en) * 1976-07-12 1978-02-10 Hunke & Jochheim Wall hanging writing pad - has suspension eye or hook on lug integral with and detachable from it
US4624365A (en) * 1983-08-03 1986-11-25 Plasticos Polyfilm S/A Packaging arrangement for plastic bags
US4793482A (en) * 1987-11-25 1988-12-27 Deslauriers, Incorporated One-piece shim pack
US5467572A (en) * 1992-04-01 1995-11-21 Epi Packaging Technologies, Inc. Bagging system
US5664402A (en) * 1995-09-28 1997-09-09 Gary W. Clem, Inc. Method and means for harvesting and packaging seeds
US5687545A (en) * 1995-10-06 1997-11-18 Advanced Poly-Packaging, Inc. Apparatus for sealing and separating perforated flexible bags
US6363694B1 (en) * 1998-04-06 2002-04-02 International Paper Company Bag for use in an automatic bag filling process
US20030205497A1 (en) * 2001-05-09 2003-11-06 Strickland Donald G Storage back rack system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3021947A (en) * 1959-02-27 1962-02-20 Amsco Packaging Machinery Inc Fused-together unit of stacked articles
US3044233A (en) * 1961-10-09 1962-07-17 Fabricon Products Handling of flexible plastic bags

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3021947A (en) * 1959-02-27 1962-02-20 Amsco Packaging Machinery Inc Fused-together unit of stacked articles
US3044233A (en) * 1961-10-09 1962-07-17 Fabricon Products Handling of flexible plastic bags

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768230A (en) * 1972-09-18 1973-10-30 E Bruno Container cover and method of affixing same
US3893382A (en) * 1972-11-07 1975-07-08 Windmoeller & Hoelscher Process and apparatus for manufacturing pads of bags made of synthetic thermoplastics
US3791267A (en) * 1972-11-27 1974-02-12 Aberdeen Bag Co Method and apparatus for making packages of interconnected plastic bags and the like
US3886850A (en) * 1973-05-23 1975-06-03 Midland Ross Corp Method of forming flat bottoms on bags of creasable material
FR2358279A1 (en) * 1976-07-12 1978-02-10 Hunke & Jochheim Wall hanging writing pad - has suspension eye or hook on lug integral with and detachable from it
US4624365A (en) * 1983-08-03 1986-11-25 Plasticos Polyfilm S/A Packaging arrangement for plastic bags
US4793482A (en) * 1987-11-25 1988-12-27 Deslauriers, Incorporated One-piece shim pack
US5467572A (en) * 1992-04-01 1995-11-21 Epi Packaging Technologies, Inc. Bagging system
US5664402A (en) * 1995-09-28 1997-09-09 Gary W. Clem, Inc. Method and means for harvesting and packaging seeds
US5687545A (en) * 1995-10-06 1997-11-18 Advanced Poly-Packaging, Inc. Apparatus for sealing and separating perforated flexible bags
US6363694B1 (en) * 1998-04-06 2002-04-02 International Paper Company Bag for use in an automatic bag filling process
US20030205497A1 (en) * 2001-05-09 2003-11-06 Strickland Donald G Storage back rack system

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