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US3068132A - Fabrication of flexible collapsible containers - Google Patents

Fabrication of flexible collapsible containers Download PDF

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Publication number
US3068132A
US3068132A US799033A US79903359A US3068132A US 3068132 A US3068132 A US 3068132A US 799033 A US799033 A US 799033A US 79903359 A US79903359 A US 79903359A US 3068132 A US3068132 A US 3068132A
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United States
Prior art keywords
fabric
protective material
joint
flexible
marginal portions
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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
US799033A
Inventor
Warburton-Hall Henry
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Dracone Developments Ltd
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Dracone Developments Ltd
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Publication date
Application filed by Dracone Developments Ltd filed Critical Dracone Developments Ltd
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Publication of US3068132A publication Critical patent/US3068132A/en
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Classifications

    • 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
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]
    • B65D88/1656—Flexible intermediate bulk containers [FIBC] for liquids
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly
    • Y10T156/1074—Separate cutting of separate sheets or webs

Definitions

  • a collapsible, flexible container is made from a fabric composed of woven or unwoven, natural or synthetic fibers coated on opposite sides with a layer of proofing material which does not adhere to the fabric along one or more marginal portions thereof such that the proofing can be initially folded back to expose the fabric, said fabric being joined at the uncoated margin or margins and the proofing then sealed over the joint.
  • the joint in the fabric may be a lap joint and the proofing material may be cut back in the region of the lap joint so that opposed edges of the proofing material do not overlap, said proofing material being adhesively secured to the fabric and strips of proofing material preferably being adhesively secured over the opposed edges of the proofing material to form a sealed joint.
  • the lap joint of the fabric may be sewn and/or adhesively secured.
  • the invention also extends to a method of proofing and joining fabric and to proofed fabric material prepared for joining.
  • the fabric 1 is a heavy nylon fabric with a tensile strength both in the direction of the weft and in the direction of the warp of not less than 1,000 lbs. per inch width as measured by the British Standard One Minute Tensile Test (Handbook No. 11 of the British Standards Institution).
  • the fabric 1 is coated on one side with a neoprene polymer proofing 2 and on the other side with an acrylonitrile polymer proofing 3. These proofings are applied in such a way that they do not adhere to the reinforcing fabric along marginal areas 4 of approximately six inches in width along each edge of the fabric. This can be achieved by inserting an inert film on both sides of the reinforcing fabric 1 or by omitting the anchor coat.
  • the free flaps 5 of proofing material can thus be folded back to expose the fabric portions 4.
  • the joint is prepared by sticking the unproofed portions 4 of nylon reinforcement together with a suitable nylon adhesive 6 which is inert to organic solvents and to water, and subsequently sewing the lap joints thus formed as shown at 7.
  • the flaps 5 of proofing are then cut back three inches to the length as illustrated and are stuck down onto the fabric joint by a suitable mbberlike adhesive 8.
  • Unreinforced cover strips 9 and 11 of the respective proofing materials 2 and 3 are then adhesively secured over the butt joints of the proofings on each side of the fabric.
  • the invention also includes the prepared fabric material consisting of the reinforcing fabric 1 with a coating 2 and 3 of proofing material on one or both sides, such coating being free of the reinforcing fabric 1 along one or more marginal portions 4 thereof.
  • a flexible container made of strips of flexible material jointed together, the flexible material consisting of fabric, a layer of protective material attached to each side of said fabric, said protective material being unattached to said fabric on each side along marginal portions thereof whereby said protective material can be initially folded back to expose the marginal portions of each side of said fabric, a joint in the fabric at said marginal portions and a seal over said joint, said seal comprising said initially folded back protective material re-applied to lie over said fabric joint, said fabric joint being a lap joint and said initially folded back protective material being cut back so as not to overlap, and said seal including cover strips of protective material secured over said re-applied protective material on each side of the fabric.
  • a container according to claim 1 in which the protective material on one side of the fabric is a neoprene polymer and the protective material on the other side is an acrylonitrile polymer.
  • the method of protecting and joining fabric for a flexible collapsible container made from strips of flexible material jointed together, the flexible material consisting of fabric comprising the steps of attaching a layer of protective material to each side of the fabric with the protective material being unattached to the fabric on each side along marginal portions thereof, folding back said unattached protective material to expose the marginal portions of each side of said fabric, joining the fabric at said marginal portions, re-applying the unattached protective material to lie over the joint and then sealing the protective material over the joint, the fabric being lap joined and the protective material being cut back so as not to overlap, and applying a protective cover strip over the facing edges of the protective material on each side to form a sealed joint.

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

Description

Dec. 11, 1962 H. WARBURTON-HALL 3, 68, 3
FABRICATION OF FLEXIBLE COLLAPSIBLE CONTAINERS Filed March 12, 1959 n mg i! Dag INVENTOR Hamzm WAQBUETOM- HALL.
BY MJM ATTORNEYS United States Patent Office 3,068,132 Patented Dec. 11, 1962 3,068,132 FABRICATION OF FLEXIBLE COLLAPSIBLE CONTAINERS Henry Warburton-Hall, Woking, England, assignor, by mesne assignments, to Dracone Developments Limited, London, England, a corporation of Great Britain Filed Mar. 12, 1959, Ser. No. 799,033 Claims priority, application Great Britain Mar. 14, 1958 Claims. (Cl. 156-93) This invention relates to the fabrication of collapsible containers of flexible material and is applicable to the fabrication of petrol and other fuel tanks and to the fabrication of vessels for the transportation or storage of oil in bulk.
According to the invention, a collapsible, flexible container is made from a fabric composed of woven or unwoven, natural or synthetic fibers coated on opposite sides with a layer of proofing material which does not adhere to the fabric along one or more marginal portions thereof such that the proofing can be initially folded back to expose the fabric, said fabric being joined at the uncoated margin or margins and the proofing then sealed over the joint. Conveniently, the joint in the fabric may be a lap joint and the proofing material may be cut back in the region of the lap joint so that opposed edges of the proofing material do not overlap, said proofing material being adhesively secured to the fabric and strips of proofing material preferably being adhesively secured over the opposed edges of the proofing material to form a sealed joint. The lap joint of the fabric may be sewn and/or adhesively secured.
The invention also extends to a method of proofing and joining fabric and to proofed fabric material prepared for joining.
An example of the invention is illustrated in the accompanying diagrammatic drawing which is a sectional elevation of a flexible container in the region of a joint in its proofed fabric.
The fabric 1 is a heavy nylon fabric with a tensile strength both in the direction of the weft and in the direction of the warp of not less than 1,000 lbs. per inch width as measured by the British Standard One Minute Tensile Test (Handbook No. 11 of the British Standards Institution). The fabric 1 is coated on one side with a neoprene polymer proofing 2 and on the other side with an acrylonitrile polymer proofing 3. These proofings are applied in such a way that they do not adhere to the reinforcing fabric along marginal areas 4 of approximately six inches in width along each edge of the fabric. This can be achieved by inserting an inert film on both sides of the reinforcing fabric 1 or by omitting the anchor coat. The free flaps 5 of proofing material can thus be folded back to expose the fabric portions 4.
The joint is prepared by sticking the unproofed portions 4 of nylon reinforcement together with a suitable nylon adhesive 6 which is inert to organic solvents and to water, and subsequently sewing the lap joints thus formed as shown at 7. The flaps 5 of proofing are then cut back three inches to the length as illustrated and are stuck down onto the fabric joint by a suitable mbberlike adhesive 8. Unreinforced cover strips 9 and 11 of the respective proofing materials 2 and 3 are then adhesively secured over the butt joints of the proofings on each side of the fabric.
The invention also includes the prepared fabric material consisting of the reinforcing fabric 1 with a coating 2 and 3 of proofing material on one or both sides, such coating being free of the reinforcing fabric 1 along one or more marginal portions 4 thereof.
I claim:
1. A flexible container made of strips of flexible material jointed together, the flexible material consisting of fabric, a layer of protective material attached to each side of said fabric, said protective material being unattached to said fabric on each side along marginal portions thereof whereby said protective material can be initially folded back to expose the marginal portions of each side of said fabric, a joint in the fabric at said marginal portions and a seal over said joint, said seal comprising said initially folded back protective material re-applied to lie over said fabric joint, said fabric joint being a lap joint and said initially folded back protective material being cut back so as not to overlap, and said seal including cover strips of protective material secured over said re-applied protective material on each side of the fabric.
2. A container according to claim 1, in which the protective material on one side of the fabric is a neoprene polymer and the protective material on the other side is an acrylonitrile polymer.
3. The method of protecting and joining fabric for a flexible collapsible container made from strips of flexible material jointed together, the flexible material consisting of fabric comprising the steps of attaching a layer of protective material to each side of the fabric with the protective material being unattached to the fabric on each side along marginal portions thereof, folding back said unattached protective material to expose the marginal portions of each side of said fabric, joining the fabric at said marginal portions, re-applying the unattached protective material to lie over the joint and then sealing the protective material over the joint, the fabric being lap joined and the protective material being cut back so as not to overlap, and applying a protective cover strip over the facing edges of the protective material on each side to form a sealed joint.
4. The method of claim 3, in which the protective material is prevented from adhering to the marginal portions by omitting an anchor coat.
5. The method of claim 3, in which the protective material is prevented from adhering to the marginal portions by inserting an inert film between the marginal portions and the protective material.
References Cited in the file of this patent UNITED STATES PATENTS 1,203,616 Hawkins Nov. 7, 1916 2,372,632 Webb Mar. 27, 1945 2,406,830 Haman Sept. 3, 946 2,726,222 Palmquist Dec. 6, 1955 2,80 ,452 Adams Aug. 6, 1957 2,8 3,054 Nicholas Nov. 12, 1957 2,932,340 Poeschl Apr. 12, 1960

Claims (1)

  1. 3. THE METHOD OF PROTECTING AND ADJOINING FABRIC FOR A FLEXIBLE COLLASPSIBLE CONTAINER MADE FROM STRIPS OF FLEXIBLE MATERIAL JOINTED TOGETHER, THE FLEXIBLE MATERIAL CONSISTING OF FBRIC COMPRISING THE STEPS OF ATTACHING A LAYER OF PROTECTIVE MATERIAL TO EACH SIDE OF THE FABRIC WITH THE PROTECTIVE MATERIAL BEING UNATTACHED TO THE FABRIC ON EACH SIDE ALONG MARGINAL PORTIONS THEREOF, FOLDING BACK SAID UNATTACHED PROTECTIVE MATERIAL TO EXPOSE THE MARGINAL PORTIONS OF EACH SIDE OF SAID FABRIC, JOINING THE FABRIC AT SAID MARGINAL PORTIONS, RE-APPLYING THE UNATTACHED PROTECTIVE MATERIAL TO LIE OVER THE JOINT AND THEN SEALING THE PROTECTIVE MATERIAL OVER THE JOINT, THE FABRIC BEING LAP JOINED AND THE PRROTECTIVE MATERIAL BEING CUT BACK SO AS NOT TO OVERLAP, AND APPLYING A PROTECTIVE COVER STRIP OVER THE FACING EDGES OF THE PROTECTIVE MATERIAL ON EACH SIDE TO FORM A SEALD JOINT.
US799033A 1958-03-14 1959-03-12 Fabrication of flexible collapsible containers Expired - Lifetime US3068132A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3272684A (en) * 1963-08-13 1966-09-13 Lamont & Riley Inc Expansion joint
US4368086A (en) * 1980-03-25 1983-01-11 The United States Of America As Represented By The Secretary Of The Air Force Method of fabricating an aircraft self-sealing fuel tank
EP0443319A3 (en) * 1990-01-25 1991-12-04 Oy W. Rosenlew Ab A flexible container for transporting and storing bulk cargo
US20130142456A1 (en) * 2011-12-01 2013-06-06 Gta Containers, Inc. Method of fabrication of collapsible storage tank
US9597848B1 (en) 2012-05-25 2017-03-21 Robertson Fuel Systems Llc Method and system for forming a self-sealing volume
US9802476B1 (en) 2012-05-25 2017-10-31 Robertson Fuel Systems, Llc Method and system for forming a self-sealing volume using a breather system
US10994464B1 (en) 2014-08-07 2021-05-04 Robertson Fuel Systems, L.L.C. Method and system for forming a self-sealing volume with an aqueous polyurethane dispersion layer

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1203616A (en) * 1916-01-22 1916-11-07 M D Knowlton Co Joint for corrugated paper-board.
US2372632A (en) * 1942-11-18 1945-03-27 Singer Mfg Co Finishing seam and method
US2406830A (en) * 1944-06-09 1946-09-03 Warren Featherbone Co Method of sealing together two pieces of waterproof fabric, and the seam formed thereby
US2726222A (en) * 1949-11-19 1955-12-06 Minnesota Mining & Mfg Dry film adhesive for splicing flexible sheet material
US2801452A (en) * 1954-01-11 1957-08-06 Raybestos Mauhattan Inc Belt splice
US2813054A (en) * 1954-03-01 1957-11-12 Nicholas William Method of seaming projection screen material
US2932340A (en) * 1957-05-07 1960-04-12 Hope Rubber Co Inc Endless laminated belt and method of making the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1203616A (en) * 1916-01-22 1916-11-07 M D Knowlton Co Joint for corrugated paper-board.
US2372632A (en) * 1942-11-18 1945-03-27 Singer Mfg Co Finishing seam and method
US2406830A (en) * 1944-06-09 1946-09-03 Warren Featherbone Co Method of sealing together two pieces of waterproof fabric, and the seam formed thereby
US2726222A (en) * 1949-11-19 1955-12-06 Minnesota Mining & Mfg Dry film adhesive for splicing flexible sheet material
US2801452A (en) * 1954-01-11 1957-08-06 Raybestos Mauhattan Inc Belt splice
US2813054A (en) * 1954-03-01 1957-11-12 Nicholas William Method of seaming projection screen material
US2932340A (en) * 1957-05-07 1960-04-12 Hope Rubber Co Inc Endless laminated belt and method of making the same

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3272684A (en) * 1963-08-13 1966-09-13 Lamont & Riley Inc Expansion joint
US4368086A (en) * 1980-03-25 1983-01-11 The United States Of America As Represented By The Secretary Of The Air Force Method of fabricating an aircraft self-sealing fuel tank
EP0443319A3 (en) * 1990-01-25 1991-12-04 Oy W. Rosenlew Ab A flexible container for transporting and storing bulk cargo
US20130142456A1 (en) * 2011-12-01 2013-06-06 Gta Containers, Inc. Method of fabrication of collapsible storage tank
US9663290B2 (en) * 2011-12-01 2017-05-30 Gta Containers, Inc. Method of fabrication of collapsible storage tank
US9597848B1 (en) 2012-05-25 2017-03-21 Robertson Fuel Systems Llc Method and system for forming a self-sealing volume
US9802476B1 (en) 2012-05-25 2017-10-31 Robertson Fuel Systems, Llc Method and system for forming a self-sealing volume using a breather system
US10549470B1 (en) 2012-05-25 2020-02-04 Robertson Fuel Systems, L.L.C. Method and system for forming a self-sealing volume
US11065953B1 (en) 2012-05-25 2021-07-20 Robertson Fuel Systems, L.L.C. Method and system for forming a self-sealing volume using a breather system
US10994464B1 (en) 2014-08-07 2021-05-04 Robertson Fuel Systems, L.L.C. Method and system for forming a self-sealing volume with an aqueous polyurethane dispersion layer

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