US1826994A - Reenforced valve bag - Google Patents

Reenforced valve bag Download PDF

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Publication number
US1826994A
US1826994A US364419A US36441929A US1826994A US 1826994 A US1826994 A US 1826994A US 364419 A US364419 A US 364419A US 36441929 A US36441929 A US 36441929A US 1826994 A US1826994 A US 1826994A
Authority
US
United States
Prior art keywords
bag
slits
valve
side flaps
bags
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
US364419A
Other languages
English (en)
Inventor
Andrew E Currier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CORNELL BAG Corp
Original Assignee
CORNELL BAG CORP
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CORNELL BAG CORP filed Critical CORNELL BAG CORP
Priority to US364419A priority Critical patent/US1826994A/en
Priority to GB26349/29A priority patent/GB337517A/en
Priority to DEC43676D priority patent/DE532472C/de
Priority to FR682904D priority patent/FR682904A/fr
Application granted granted Critical
Publication of US1826994A publication Critical patent/US1826994A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/14—Valve bags, i.e. with valves for filling
    • B65D31/142—Valve bags, i.e. with valves for filling the filling port being formed by folding a flap connected to a side, e.g. block bottoms

Definitions

  • This invention relates to improvements in bags, and particularly to bags of the well known valve type.
  • An object of the present invention is to provide a valve bag of an improved construction provided with a reenforced valve opening making for greater strength both at the location of the valve and throughout the bottom and side wall portions of the bag adjacent the valve.
  • the present invention is illustrated as applied to a valve bag of'a size and design usually employed for bagging cement or similar relatively heavy materialsand one which is 1 provided with pasted ends commonly known as satchel bottoms.
  • the bottom is provided by folding the end portions of the tube constituting the body of the bag in a pre- 50 determined manner and securing the overlapping portions while leaving one corner unsecured in a manner to provide a valve opening.
  • the length of the diamond fold constituting the valve opening will depend upon the amount of material that is initially folded inwardly from the tube end, or in other words, the length of the diamond fold will be equal to the amount of material initially appropriated from the end of the tube for the purpose of forming the folded bottom.
  • bags of this character in order to provide strength and to prevent leakage of bagged materials, to provide as much over-lap between the inner and outer folds of the valve as possible and further to provide this maximum amount of over-lap without rendering the bottom of the bag unduly wide.
  • bags having this type of folded bottom have been provided with longitudinal slits at the end of the bag tube so that the end fold or diamond fold, would be cut atleast partially free from the side flaps. With such slits, portions of the side flaps which would ordinarily be folded under, may be folded outwardly so as to increase the over-lap for any particular width of bag at the valve and if desired, at the other corners of the bag.
  • the present invention therefore, has for an object, the elimination of this objection when applied to bags constructed in this manner, although it is to be understood that the present invention is applicable to other types of valve bags and that its advantage resides in the strengthening of a valve opening and bag corner and reinforcing the valve opening against wear, such as for instance, abrasion occasioned in placing the bags on and removing them from the nozzles of filling machinery.
  • the reinforcement present invention also offers special advantages due to its cheapness, both in cost of the materials required and the simplicity and inexpensive character of the applying operation.
  • the reinforcement contemplated is particularly applicable to the valve opencontemplated in the I ing, it may, if desired, be applied with a high degree of usefulness at the location of the other corners of the bag where, due to the unusual strains in heavy service, bursting may in some instances occur.
  • the present invention is illustrated as applied to a bag having the longitudinal 'slit's located at the folds defining the side flaps, it is equally well adapted to bags of this same general kind but which are provided with slits out of fiegistry with the folds defining the side aps.
  • Figure 1 is a perspective view of a finished bag constructed in accordance with the present invention.
  • Figure 2 is an enlarged perspective view of one end-of the bag constructed in accordance with the present invention, showing the side flaps of the bottom portion folded outwardly to disclose the manner of applying the reinforcing strip.
  • Figure 3 is a cross'sectional view of one engll of the bag disclosing the valve opening
  • Figure 4 is an end elevational view of a bag end constructed in accordance with the present invention and shown in folded position
  • the present invention is illustrat- P ed as applied to a bag comprising a body portion 10, which is made up before the ends are formed in the form of a tube which may be either of single ply thickness or multi-ply, as desired, and having the fdlded *end or bottom portions 11 as shown in Figure 1.
  • the type of bottom here illustrated comprises the end or diamond folds 12, which are formed by folding the end of the tube inwardly after the tube has been slit along edges 13, so as to permit the diamond folds to be folded inwardly free of the side flaps 14:.
  • the reinforcing strip 15 of cambric, paper or other suitable reinforcing material of desired strength is applied across the diamond fold and side fiaps in the manner shown in Figure 2. Thls material is secured by means of suitable adhesive.
  • the reinforcing neaaeec strip when applied to bags of the type illustrated, that 1s, where the slit 13 extends all the way to the corner 16, the reinforcing strip covers the slit and adds strength at the location of the slits such as would otherwise be weakened by the presence of the slits. In practice, it has been found that the reinforcing strip more than makes up for the loss in strength produced by the slits 13.
  • the strip provides a reinforcing for the valve opening to make up for any strength which may be lost by the absence of adhesive at this location and in addition, provides a wearing strip preventing damage due to abrasion in placing the bag on and 0d of the nozzles of the filling machinery.
  • the bags may be made with slits 13 only at one corner thereof for providing the valve opening and with the other three corners left uncut with the corners of the side flaps folded inwardly, as the need for an increased overlap at the corner other than the valve corner is not as important.
  • the reinforcing strip 15 may if desired, be placed thereon in the same manner for the purpose of reinforcing the corner of the bag.
  • the resent disclosure illustrates a bag of the mu ti-ply type in which one of the side flaps provides a plurality of flaps such as will permit an interleaving of side flaps in a manner to form an improved bottom see copending application of Arthur L. urrier, Serial No. 284,236, filed June 9th, 1928, entitled, Multi-walled bags) and the present invention makes for a special improvement when applied to this type of bag, as it permits the slits 13 which are very advantageous for efiecting a separation of the plies of the side flap, such as is required for interleaving puroses.
  • reinforcing strip may be modified without departing from the spirit of the invention, that is, it may be of any desired width and of various lengths depending upon the need and the kind of bag to which it is applied and it will also appear that the application of the strip to the upper surface of the diamond fold and the inner surface of the side flap requires only a very simple and inexpensive operation and is one which may be accomplished by special but simple mechanism applied to the usual and well known types of bottoming machines.
  • a tube provided with longitudinal slits at its end and at the location of the valve opening, and having an end flap between said slits and side flaps on each side of said slits, and a reinforcin strip secured across the top of said end ap and on the inside of said side flaps along the edges of said slits, said side flaps being folded inwardly and secured in overlapped relationship.
  • a bag of the character described comprising a tube provided with longitudinal slits at its ends, said tube being folded to provide end flaps and side flaps at each side of said end flaps and a reinforcing strip secured to the upper surface of said end flap and to the inside surfaces of said side flaps, said reinforcing strip extending across and reinforcing said slits.
  • a bag of the character described comprising a tube provided with Ion 'tudinal slits at its ends, said tube being ilded to provide end flaps and side flaps at each side of said end flaps and a reinforcing strip secured to the upper surface of said end flap and to the inside surfaces of said side flaps, said reinforcing strip extending across and reinforcing said slits adjacent the end edges of said side flaps.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
US364419A 1929-05-20 1929-05-20 Reenforced valve bag Expired - Lifetime US1826994A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US364419A US1826994A (en) 1929-05-20 1929-05-20 Reenforced valve bag
GB26349/29A GB337517A (de) 1929-05-20 1929-08-29
DEC43676D DE532472C (de) 1929-05-20 1929-09-07 Ventilsack
FR682904D FR682904A (fr) 1929-05-20 1929-10-08 Perfectionnements aux sacs à valve renforcés et procédé de fabrication de ces sacs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US364419A US1826994A (en) 1929-05-20 1929-05-20 Reenforced valve bag

Publications (1)

Publication Number Publication Date
US1826994A true US1826994A (en) 1931-10-13

Family

ID=23434452

Family Applications (1)

Application Number Title Priority Date Filing Date
US364419A Expired - Lifetime US1826994A (en) 1929-05-20 1929-05-20 Reenforced valve bag

Country Status (4)

Country Link
US (1) US1826994A (de)
DE (1) DE532472C (de)
FR (1) FR682904A (de)
GB (1) GB337517A (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE901624C (de) * 1941-08-13 1954-01-14 Ernst Klein Ventilsack aus Papier
DE968374C (de) * 1953-01-25 1958-02-06 Windmoeller & Hoelscher Kreuzboden-Ventilsack aus Papier od. dgl. und Verfahren zu seiner Herstellung
DE966678C (de) * 1953-07-23 1957-08-29 Windmoeller & Hoelscher Kreuzbodenventilsack und Vorrichtung zum Herstellen und zum Einbringen einer Ventileinlage
DE1054821B (de) * 1954-09-17 1959-04-09 Behn Verpackung Erwin Mehrlagiger Kreuzbodenventilsack mit schlauchfoermiger Einfuelloeffnung sowie Verfahren zu seiner Herstellung
DE1022458B (de) * 1954-11-12 1958-01-09 Duerbeck Papiersackfab Ventilsack mit Aussenventilmanschette
DE1037249B (de) * 1956-12-27 1958-08-21 Windmoeller & Hoelscher Kreuzbodenventilsack
DE1293557B (de) * 1964-03-21 1969-04-24 Dynamit Nobel Ag Ventilverschluss fuer Saecke, Beutel od. dgl. aus thermoplastischer Kunststoffolie

Also Published As

Publication number Publication date
GB337517A (de) 1930-11-06
FR682904A (fr) 1930-06-04
DE532472C (de) 1931-08-28

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