US3385507A - Valved container or bag and the like - Google Patents

Valved container or bag and the like Download PDF

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Publication number
US3385507A
US3385507A US522477A US52247766A US3385507A US 3385507 A US3385507 A US 3385507A US 522477 A US522477 A US 522477A US 52247766 A US52247766 A US 52247766A US 3385507 A US3385507 A US 3385507A
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US
United States
Prior art keywords
bag
container
flaps
flap
seam
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
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US522477A
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English (en)
Inventor
Marcel Mauffre
Claude Carrier
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.)
Cellophane SA France
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Cellophane SA France
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Filing date
Publication date
Application filed by Cellophane SA France filed Critical Cellophane SA France
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Publication of US3385507A publication Critical patent/US3385507A/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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/24—End- or aperture-closing arrangements or devices using self-locking integral or attached closure elements, e.g. flaps
    • 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

Definitions

  • VALVED CONTAINER OR BAG ANI THE LIKE Filed Jan. 24, 1966 2 Sheets-Sheet 2 P T I 36 38 K 32 i L FIGS ⁇ H65 F
  • ABSTRACT OF THE DISCLOSURE A plastic bag or container which is easy to use, solid and in which the industrial operation used making the same is very simple and economical, said bag or container comprising continuous side walls connected by means of a closed off bottom, a separate piece of material forming flaps folded downwardly adjacent the top of said container and adjacent the outer surfaces of said continuous side walls, said flaps being heat sealed to said outer surfaces, and an opening means in said container for .filling it with material.
  • the flaps folded downwardly and adjacent the top of the container each may have a diagonal heat sealed seam therein securing each flap to the outer surf-ace of each of said side walls.
  • the present invention relates to a container or bag and more particularly to a container or bag that can be inexpensively made of plastic material or other types of flexible material.
  • plastic bags and containers to transport goods in the various forms, sizes and shapes is conventional in the packaging art.
  • the use of plastic containers and bags gives the advantage of packaging the products under hydroscopic conditions which preserves the product packaged and prevents the adsorption of moisture. Furthermore, by virtue of the fact that the product is contained in a clear plastic container or bag, high quality and quantity is guaranteed.
  • plastic bags Some of the disadvantages result from the manufacture of the bag inasmuch as it is necessary that an inexpensive and industrially acceptable method of filling and closing be used.
  • the bags have been equipped with a valve which presents various problems by virtue of variations in structure, that is, it is not uncommon to find leakage and breakages along the surface areas or filling areas of the bag.
  • a container or bag has been developed which is easy to use, solid, and the industrial operation used to make the same is very simple and economical, i.e., the plastic bag or container of the present invention does not suffer from the disadvantages of the prior art plastic bags.
  • a flexible bag having a closed or sealed bottom, and an open upper end.
  • a separate sheet of material forming two flaps is folded downwardly over the opposite sides of the open upper end of the bag to close ofl? or cover over this open end of the bag.
  • the lower transversely extending edges of the flaps are sealed to the outer faces or sides of the bag.
  • the upper opposite corners of the flaps and bag are spot sealed together.
  • One side of the flaps is provided with a diagonal seam which seals the flap to the respective outer skin of the bag upon which it overlaps. This provides an inwardly foldable valve opening into which a spout or funnel can be inserted for readily filling the bag with material.
  • FIGURE 1 is a side elevational view of the container embodying the present invention before it is filled with a fluid or material;
  • FIGURE 2 is a fragmentary view of the container shown in FIGURE 1, illustrating the method of filling the container from a funnel member or the like;
  • FIGURE 3 is a view illustrating the portion of the bag shown in FIGURE 2 after it has been filled and the flaps secured to each other by a spot type heat seal in the corners of the flaps;
  • FIGURE 4 represents another modification of the container embodied in the present invention illustrating a linear sealing of the opposite edges of the flaps after the bag or container has been filled;
  • FIGURE 5 illustrates a method of sealing transverse edges of the folded down flaps to the outer sides of the container embodied in the present invention
  • FIGURE 6 is an end view of the container shown in FIGURE 5.
  • FIGURES 7 and 8 are detail views illustrating the portion of the bag with the valve flap means.
  • the reference numeral 10 generally designates a container, bag or the like that is made of a flexible material such as any well known thermoplastic material, which material may be transparent or translucent, or opaque, as desired.
  • the main body portion 12 of the bag consists of a continuous side wall 14 and the bottom of the bag is closed off by a transverse seam 16 which is preferably made by a continuous heat seal across the bottom of the bag or container.
  • the upper end of the bag is provided with a turned down portion 23 forming a rectangular fiap or fold extending transversely across the upper end portion of the main body 12 of the bag. It will be noted that the rectangular flap 20 extends beyond the opposite side edges of the main body .portion 12 as indicated at 22 and 24.
  • the outer flap 20 is heat sealed to the outer surface of the adjacent main body 12 by a transversely extending heat seal seam 26 adjacent the lower edges of the flap 20.
  • Each side of the bag is provided with a flap 20 so that there are two identical flaps facing one another on opposite sides of the bag, with only one fiap 20 being seen in FIGURE 1.
  • the flaps are formed from a separate sheet of material, and not the bag.
  • Both flaps 20 are provided with a diagonal or oblique linear seam 28 extending from the upper edge 30 of the flap to the lower edge of the flap, adjacent the transverse seam 26.
  • the diagonal seam 28 is also a continuous linear seam and is formed by a well known heat seal, sealing the flaps 20 to the exterior faces or sides of the main body portion 12 of the bag.
  • the provision of the seam 28 on the respective fiaps 20 provide two 45 degree seams with respect to the horizontal axis of the bag, and form a filler valve or filler inlet means 32 for the container which is turned or folded inwardly as shown in FIGURE 2 during filling.
  • This provision of a filler means for the bag eliminates the necessity of providing a complicated inlet valve in the plastic bag for filling it and thus eliminates the requirement of a complicated machine to insert a valve in the plastic bag.
  • the container or bag is filled by inserting the discharge spout or filler funnel 34 between the inner facing sides of the flaps 20 and also disposing the funnel between the diagonal infolded portions 29 of the main bag portion 12 forming the valve 32.
  • the flexible or resilient container will have its continuous wall 14 distended or expanded as the bag is gradually filled.
  • the level of the material within the bag reaches the portion 32 forming the valve, it will cause the portion of the flap adjacent the seam 28 and the valve to approach each other or come together.
  • the funnel 34 is withdrawn from the bag and the diagonal portion 29 of the bag is pulled outwardly to the position shown in FIGURE 1.
  • the infolded diagonal flap portion 29 of the upper end of the bag is pulled or folded outwardly to the position shown in FIGURE 1.
  • the opposite upper corners of the flaps 20, and corresponding corners of the bag are heat sealed together, as indicated by the spot or dot type heat seal 31 and 33 in FIGURE 3.
  • the only way to the interior of the container that is open is indicated by the dotted arrow in FIGURE 3.
  • the only way to the interior of the container is by a path between the inner face of the out flaps 20, and the outer face of the upper edge of the container, and then over the top edge of the container, and then down between the inner surfaces of the continuous side wall 14.
  • the container is heat sealed along the linear seams 42 and 44 of the flaps 20, asshown in FIGURE 4.
  • the edges of the container are indicated as 36, 38 and 40 and are shown in dotted lines in the drawings.
  • the particular method of apparatus for applying the heat seal along the appropriate seams does not form the invention and is well known. If desired, the edge 38 of the bag could be sealed, thus eliminating the need to seal the seams 42 and 44.
  • the present invention provides a rather simple method of forming a bag and a closing flap from a separate sheet of material without requiring use of costly machinery and the like.
  • the bag is also provided with a diagonal seam along the flaps and upper portion of the container to provide valve means, thus eliminating any complicated type of valve means in order to fill the interior of the container with a material.
  • FIGURES 5 and 6 there is shown therein a method of forming the bag embodying the present invention.
  • a glass cloth screen member 46 as seen in FIGURE 6, is inserted upwardly between the continuous side wall 14 of the bag.
  • the continuous side wall 14 may be formed by extruding a thermoplastic material.
  • the glass cloth member 46 is held between the faces forming the opposite sides of the continuous wall 14 and the separate double flap 20 is placed over the bag. Thereafter, the lower edges of the flaps 20 are heat sealed by forming continuous transverse heat seals along the transverse seams 26 and the diagonal continuous heat seal seams 28 are also completed at the time.
  • the seams 26 and the seams 28 secure the flap 20 to the outer surface of the continuous wall 14 while not in any Way securing the inner surfaces of the continuous wall 14 to each other.
  • the glass cloth member 46 may be withdrawn from between the opposite facing sides or faces of the continuous wall 14 of the bag.
  • the bottom continuous heat seal seam 16 is made to join the opposite faces of the continuous wall 14 to each other by any well known means to close off the bottom of the bag.
  • the spot or disc seals 31 and 33 or seams 42 and 44, or seam 38 may be properly provided in the bag in order to close the bag as desired.
  • the present invention provides a simple method of forming a flexible and resilient thermoplastic bag that can be made from extruded thermoplastic material and readily secure together.
  • the present invention provides a simple thermoplastic bag having a flap means disposed adjacent its upper end and forming a simple valve means therein for inserting material into the container.
  • thermoplastic container comprising continuous side walls connected by means of a closed off bottom, a separate piece of material forming fiaps folded downwardly adjacent the top of said container and disposed adjacent the outer surfaces of said continuous side walls, said flaps being heat sealed to said outer surfaces, and opening means in said container for filling it with material, said flaps each having a diagonal heat seal seam therein wherein each flap is secured to the outer surface of each of said side walls and valve means are thereby provided therein by folding said side walls inwardly along said diagonal seams.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
US522477A 1965-02-16 1966-01-24 Valved container or bag and the like Expired - Lifetime US3385507A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR5763A FR1433473A (fr) 1965-02-16 1965-02-16 Saches à valve de grande contenance

Publications (1)

Publication Number Publication Date
US3385507A true US3385507A (en) 1968-05-28

Family

ID=8571083

Family Applications (1)

Application Number Title Priority Date Filing Date
US522477A Expired - Lifetime US3385507A (en) 1965-02-16 1966-01-24 Valved container or bag and the like

Country Status (6)

Country Link
US (1) US3385507A (enrdf_load_stackoverflow)
BE (1) BE676443A (enrdf_load_stackoverflow)
CH (1) CH453191A (enrdf_load_stackoverflow)
FR (1) FR1433473A (enrdf_load_stackoverflow)
GB (1) GB1090694A (enrdf_load_stackoverflow)
NL (1) NL6601774A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030189062A1 (en) * 2000-04-11 2003-10-09 Credle William S. Process for the manufacture and delivery of small beverage pouches

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1668542A (en) * 1925-06-15 1928-05-08 Bates Valve Bag Corp Paper bag
US1736396A (en) * 1926-05-27 1929-11-19 Duvall James Reenforcing closure means for paper bags
US2620944A (en) * 1949-01-21 1952-12-09 William F Stahl Plastic container
CA545641A (en) * 1957-09-03 D. Millidge Brydone Bag and closure mounting therefor
US2959343A (en) * 1958-06-23 1960-11-08 Bemis Bro Bag Co Bag
FR1307820A (fr) * 1961-12-12 1962-10-26 Nat Biscuit Co Dispositif de fermeture pour pochette contenant des denrées périssables
US3243099A (en) * 1965-02-18 1966-03-29 Union Bag Camp Paper Corp Tape closure for gusseted bags

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA545641A (en) * 1957-09-03 D. Millidge Brydone Bag and closure mounting therefor
US1668542A (en) * 1925-06-15 1928-05-08 Bates Valve Bag Corp Paper bag
US1736396A (en) * 1926-05-27 1929-11-19 Duvall James Reenforcing closure means for paper bags
US2620944A (en) * 1949-01-21 1952-12-09 William F Stahl Plastic container
US2959343A (en) * 1958-06-23 1960-11-08 Bemis Bro Bag Co Bag
FR1307820A (fr) * 1961-12-12 1962-10-26 Nat Biscuit Co Dispositif de fermeture pour pochette contenant des denrées périssables
US3243099A (en) * 1965-02-18 1966-03-29 Union Bag Camp Paper Corp Tape closure for gusseted bags

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030189062A1 (en) * 2000-04-11 2003-10-09 Credle William S. Process for the manufacture and delivery of small beverage pouches
US6662829B2 (en) * 2000-04-11 2003-12-16 The Coca-Cola Company Process for the manufacture and delivery of small beverage pouches

Also Published As

Publication number Publication date
FR1433473A (fr) 1966-04-01
BE676443A (enrdf_load_stackoverflow) 1966-06-16
DE1511972A1 (de) 1969-10-23
NL6601774A (enrdf_load_stackoverflow) 1966-08-17
GB1090694A (en) 1967-11-15
DE1511972B2 (de) 1976-01-15
CH453191A (fr) 1968-06-14

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