US2490966A - Valve bag - Google Patents

Valve bag Download PDF

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Publication number
US2490966A
US2490966A US65565746A US2490966A US 2490966 A US2490966 A US 2490966A US 65565746 A US65565746 A US 65565746A US 2490966 A US2490966 A US 2490966A
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US
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Grant
Patent type
Prior art keywords
valve
tube
tongue
bag
folding
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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
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Inventor
Johnsson John
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Billeruds AB
Original Assignee
Billeruds AB
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Publication date
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D31/00Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/14Valve bags, i.e. with valves for filling
    • B65D31/142Valve bags, i.e. with valves for filling the filling port being formed by folding a flap connected to a side, e.g. block bottoms

Description

Dec. 13, 1949 J. JQHNSSON 2,490,966

VALVE gm Filed March 20, 1946 Patented Dec. 13, 1949 VALVE BAG John Johnsson, Saffle, Sweden, assignor to Billeruds Aktiebolag, Sallie, Sweden, a. corporation of Sweden Application March 20, 1946, Serial No. 655,657

In Sweden April 28, 1945 g 4 Claims.

The present invention relates to such valve bags, usualfy constructed as multi-ply paper bags, as are provided with a tube attached in the valve formed by folding in a corner of the bag. The bag is filled through this tube, which is then sealed at its outer end. The invention has for its object to enable the valve tube to be sealed in a single operation both readily and effectively after the bag is filled. Further objects and advantages of the invention will become apparent from the following description of some difierent embodiments of the device, reference being had to the accompanying drawings, in which Fig. 1 is a side view of the valve corner of the bag, the valve being in the condition suitable for filling the bag, and

Fig. 2 is a longitudinal section through the valve in the same condition.

Fig. 3 shows the valve corner of the bag seen from above.

Fig. 4 is a longitudinal section through the bag valve after filling of the bag and sealing of the valve tube.

Figs. 5 and 6 show another embodiment of the device in the same manner as Figs. 2 and 3. while Figs. 7 and 8 show a third embodiment thereof as seen in section through the valve corner of the bag and obliquely from above. respectively.

In the valve formed by folding in a corner of the bag in the manner usual in valve bags there is attached by means of adhesion or in any other suitable manner a sleeve or tube I of relatively pliable material such as paper, preferably crned paper. or the like. According to the invention the outer end of the tube I projects but a short distance from the valve and is provided with a tongue 2 of relatively stiif material. such as pasteboard or the like, approximately in the form of a segment of a circle and attached to the top portion or wall of the tube by means of adhesion or in any other way. The extension of this tongue in the transverse direction of the valve is somewhat less than the width of the tube attached in the valve in the normal flattened condition thereof. In the embodiment shown in Figs. 1 to 4, the tongue 2 with its straight base edge extending in the transverse direction of the valve is a short distance inside the outer end of the tube I, in other words, approximately at or just inside the outer edge of the top wall of the valve.

When the bag is to be threaded on to the filler tube of the valve bag filling machine by means of the valve, the bag is taken by the valve with one hand so that the valve is subjected to pressure by the hand from both sides of the bag. By

means of this pressure applied at the tongue 2, this tongue bulges and expands the valve opening, as shown in Figs. 1 and 2, whereby the threading on of the valve of the bag to the filler tube is facilitated. After the bag has been filled and removed from the filler tube the outer end of the tube 1 is sealed by folding in the tongue 2 into the valve opening or rather into the pocket or so-called blind valve that is formed in a manner known in and per se between the bottom of the valve opening and the lower portion or wall of the valve tube I attached by means of adhesion or in any other manner to the bottom of the valve opening only with its inner end. This folding in of the tongue 2 is readily executed in a single operation in which the outer end of the tube 1 is doubled about the straight base edge of the tongue and the tube 1 is effectively retained in this sealed condition by the tongue folded into the blind valve. When folded in, in the manner stated, into the blind valve, the tongue 2 is in a well protected position, in which the tongue and the sealed outer end of the tube will not easily be inadvertently damaged in the handling of the filled bag. The reason why, in the embodiment according to Figs. 1 to 4, the tongue 2 is glued to the inside of the top portion or wall of the tube l, is that the glued portion would be subjected to too great strain and would come loose too easily on folding in of the tongue into the blind valve, if, in this embodiment thereof, the tongue were instead glued to the outside of the tube l.

The two embodiments according to Figs. 5 and 6 and Figs. 7 and 8 differ fromthe embodiment according to Figs. 1 to 4 by the tongue 2 being provided with a base flap 2a separated from the tongue proper 2 by means of a folding line 3. As a result of the tongue 2 being provided with this base flap 2a defined by means of the folding line it may be glued or possibly otherwise attached by means of this flap not only to the inside of the top portion or wall of the tube l but also to the outside thereof as shown in Figs. 5 and 6, or internally in the valve opening proper to the upper wall thereof, as shown in Figs. '7 and 8, or externally to the last-mentioned wall. In the latter cases, it may be advantageous to give the base flap 2a triangular form, as shown in Fig. 8, in order that it may be glued to the triangular portion of the upper wall of the valve Where the number of the paper layers forming this Wall, when using a certain method of foldin in constructing the valve, will be reduced, and consequently, the Wall in question thinner than in other places. so that the thickening of the said wall of the valve caused by gluing the flap 2a thereto Will not be very conspicuous. When, in any one of the embodiments shown in side thereof so that the folding line of said tongue extends transversely of said tube near the outer end of said valve.

3. In a valve bag of the character described Figs. 5, 6, 7 and 8 on folding of the outer end 5 having its valve formed by folding in a corner portion of the tube 1, the tongue 2 is folded in between the bottom of the valve openingand the lower portion or wall offthe tube?! formingsthe blind valve, thisfolding is efie'cted about the of the bag, a tube of relatively pliable and bendable material attached in saidovalve and projectingza short. distance therefrom, said: tube forming'with the bottom of said valve a blind valve, a

folding line 3, which thus replaces the rear edgelfl. tongue of relatively stiiT material resistant to of the tongue in the embodiment according to" Figs. 1 to 4, while the base flap 2a situated inside the folding line 3 serves as.a means of attachment for the tongue or for."strengtheninggthe.

bending and approximately in the form of a segment of a circle, extending transversely of said valve and having a length slightly less than the width of'sai'd tube when in normal flattened conattachment thereof, whereby greater liberty of "15 ditionrsaiditonguesbei g attached to said tube adchoice is obtained as to the place of attaching the tongue.

What I claim and desire to secure rig Letters Patent is:

1. In a valve bag off-the character described having its valve formed'by folding inacorner of the bag, a tube of relatively'pliable and"bendabl material attached in said'lvalve and projecting a short distance therefrom; said" tube forming with the bottomofsaid'valve'ablind valve,i and atongue' of relatively, stifi "material "resistanfito bending and approximately iirtheform' of'a .seg;'- ment ofa circle, said tongue being jattachedad jacent the top-sideofsaicl valve andiadjacentthe outer end thereof'whereby'said'tonguemay be fdlded'downwardly' into said-blind valve and the proj ecting-outer 'end of said tube-may'be doubled and-*thus sealed by the-folding *in'ofsaid tongue into-said blind valveafter-th'ezbag has been filled through said-tube;

ZFIh-avalve 'bag as claimeddn claim .l,fl said tongue=-having' a" base flap separated from the tongueitself I by," means ofa folding line about whic'lrsaidtonguemayhefolded'downwardlyinto saidhiind-valve, said-flap beingjs'o attached'adjacent th'ebuter end ofthe 'va-lveadjacentthe top jacent the top side at the outer end thereof wherebysaidctongue may be folded downwardly into said blind-valve and the projecting outer end of said tubgwill be doubled and thus sealed by the folding of the said tongue into said blind valve after the bag, has been filled'through said tube.

4: Iiitavaive bagias claimed in claim 3; said tonguehaving a' b'ase'fiap separated. from the tonguentseif iby meansof a folding line. about which saidttonguemay be folded. into said1blind valve; said: flap"b'eing so attached to said tube adjacentith'e'top side thereofi'that the folding line'rofisaid tongue'extends transversely of" the tubeineartlre-outer endiof thevalve.

' 0 JOHN JOHNSSONL REFERENCES CITED The followinggreferences are.of..record. in the I! file of this-patent: A)

STATES PATENTS

US2490966A 1945-04-28 1946-03-20 Valve bag Expired - Lifetime US2490966A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE261137X 1945-04-28

Publications (1)

Publication Number Publication Date
US2490966A true US2490966A (en) 1949-12-13

Family

ID=20306447

Family Applications (1)

Application Number Title Priority Date Filing Date
US2490966A Expired - Lifetime US2490966A (en) 1945-04-28 1946-03-20 Valve bag

Country Status (5)

Country Link
US (1) US2490966A (en)
DE (1) DE925507C (en)
FR (1) FR923787A (en)
GB (1) GB611349A (en)
NL (1) NL65692C (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE806623C (en) * 1950-02-09 1951-06-14 Verpackungsbedarf Gmbh Valve insert for Ventilsaecke
US2740577A (en) * 1953-03-26 1956-04-03 Bemis Bro Bag Co Bag
DE973453C (en) * 1954-09-19 1960-03-03 Niedermayr Papierwarenfabrik Bag filling valve
US3000551A (en) * 1959-09-11 1961-09-19 Hudson Pulp & Paper Corp Bags
US3092303A (en) * 1961-10-05 1963-06-04 Bemis Bro Bag Co Bag
US3130897A (en) * 1961-06-08 1964-04-28 St Regis Cons Packaging Ltd Valve inserts for valve bags
US4049191A (en) * 1976-02-02 1977-09-20 Great Plains Bag Corporation Block bottom valve bag

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1782738A (en) * 1926-09-03 1930-11-25 St Regis Paper Co Valve bag
US2147970A (en) * 1936-01-22 1939-02-21 Bois Alfred Du Closing of valve bags
US2177122A (en) * 1938-03-31 1939-10-24 Arkell & Smiths Valve bag

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL23972C (en) * 1927-04-08
DE547170C (en) * 1928-03-09 1932-03-21 Bates Valve Bag Corp Sack with filling valve and method for manufacturing and filling of the bag
US2359033A (en) * 1943-04-07 1944-09-26 Albemarle Paper Mfg Company Valve for bags

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1782738A (en) * 1926-09-03 1930-11-25 St Regis Paper Co Valve bag
US2147970A (en) * 1936-01-22 1939-02-21 Bois Alfred Du Closing of valve bags
US2177122A (en) * 1938-03-31 1939-10-24 Arkell & Smiths Valve bag

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE806623C (en) * 1950-02-09 1951-06-14 Verpackungsbedarf Gmbh Valve insert for Ventilsaecke
US2740577A (en) * 1953-03-26 1956-04-03 Bemis Bro Bag Co Bag
DE973453C (en) * 1954-09-19 1960-03-03 Niedermayr Papierwarenfabrik Bag filling valve
US3000551A (en) * 1959-09-11 1961-09-19 Hudson Pulp & Paper Corp Bags
US3130897A (en) * 1961-06-08 1964-04-28 St Regis Cons Packaging Ltd Valve inserts for valve bags
US3092303A (en) * 1961-10-05 1963-06-04 Bemis Bro Bag Co Bag
US4049191A (en) * 1976-02-02 1977-09-20 Great Plains Bag Corporation Block bottom valve bag

Also Published As

Publication number Publication date Type
GB611349A (en) 1948-10-28 application
FR923787A (en) 1947-07-17 grant
NL65692C (en) grant
DE925507C (en) 1955-03-24 grant

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