CA1191112A - Boil-in-bag pouch - Google Patents

Boil-in-bag pouch

Info

Publication number
CA1191112A
CA1191112A CA000423683A CA423683A CA1191112A CA 1191112 A CA1191112 A CA 1191112A CA 000423683 A CA000423683 A CA 000423683A CA 423683 A CA423683 A CA 423683A CA 1191112 A CA1191112 A CA 1191112A
Authority
CA
Canada
Prior art keywords
pouch
seals
boil
bag
web
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
Application number
CA000423683A
Other languages
French (fr)
Inventor
Frederic N. Mathison
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.)
General Foods Corp
Original Assignee
General Foods 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 General Foods Corp filed Critical General Foods Corp
Application granted granted Critical
Publication of CA1191112A publication Critical patent/CA1191112A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/54Cards, coupons, or other inserts or accessories
    • B65D75/56Handles or other suspension means
    • B65D75/566Hand holes or suspension apertures
    • 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
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/01Ventilation or drainage of bags
    • 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
    • B65D81/00Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/34Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package
    • B65D81/3415Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package specially adapted to be heated in hot water, e.g. boil pouches

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)

Abstract

BOIL IN BAG POUCH
ABSTRACT
A boil-in-bag package for food products which is manufactured from a single, overlapped web of a thermoplastic film to form a pillow-type pouch having transverse top and bottom seals and two spaced-apart longitudinal seals which are positioned to seal both edges of the overlapped film. The extent of film overlap is at least 2.54 cm and the top and/or bottom ends of the pouch are provided with a horizontal aperture of at least 1.9 cm in length within the region of the film overlap.

Description

DESCRI_I'ION

BO I L I N BAG PO UCH

05 Technical Field The present invention relates to the packaging of rehydratable food products in a permeable, fle~c-ible bag which is -to be immersed in a pot of boil-ing water. Generally after cooking, the bag is 1() removed from the pot, either 'beEore or after the heated water is poured from the pot, and the 'bag i.5 allowed to drain either in the pot or ~hile being suspended by some }citchen utensil such as tongs. As will be appreciated, draining will be effected more quickly :if t'he bag is suspended 'by its top as oppos-ed to merely being left to drain in the pot.
'It has been found that strength of boil-in-bag pouches made from thin permeable (e.g. mesh, perfor-ated, retic-ulated, etc.) films of thermoplastic 20 material have a relatively low resistance to -tear-ing. This can constitute a safety hazzard if these bags are lifted out of a pot o~ boiling water by means of an implement which is inserted through the bag either by punc-turing the bag or by passing through an aperture provided in the bag. Should the bag tear as it is being lifted from the pot and the bag fall back into the pot, boiling water could be splashed onto the consumer.

~ ~l3~

The prob~Lem witll tearing bags -is of 'less c<)n-cern for bo:i~L-in-bag pouches made from re'Lati~ely--th:ick ancl costly ancl/or non-permeab~Le plastic Eilms.
These type pouches have previously been prov:ided 05 with fork li~t slots at: one or both ends to permit the consumer to reaclily ancl safely remove the bag from boiling water.

Disclosure of the Invention _ _ This invention is directed to the use of light-weight, economical and/or permeable films, with a base sheet caliper of less than about 0.05 or 0.06 mm., to form into boil-in-bag pouches which are provided with fork lift slots at one or 'bo-th ends of the pouch. The pouch design of this invention incorporates a wide, overlapping, longitudinal seam in order to provide a three-ply structure in the lift slot areas and thereby o'btain rein~orcement against tearing in these areas.
The pouches produced in accordance with this invention are made from a single web of heat seal-able material using conventiona1 vertical form/fill/
seal pouch equipment which is well known to those skilled in the art. This equipment is available commercially from a number of sources, one being Triangle Machine Co., Chicago, Illinois. One exam-ple of such a unit is disclosed in U.S. Patent No.
2,145,941 to Maxfield.
The essential elements of this invention are -the provision for a wide overlapping longitudinal seam on the pouch, spaced-apart longitudinal seals toward each edge of the overlapped web, and at least one generally-horizontal aperture (e.g. slit) to 'be used as a fork lift slot and located at one or both ends of the pouch within -the overlapped seam and between tlle spaced~apa-rt long:i.tud:i.na'l. seals Typical.Ly, the di.stance between the space(l-al)art longitudinal seals will extend ~or at 'Least 2.5~ cm, preferably at least 3.5 cm and typically aboul: 4.5 05 cm. The horizontal aperture should be at le~st 1.9 cm in l.ength and tvpically will 'be at least ahout
3.0 cm. The fork lift slots will usually be located above or wi.thin the transverse seals which de:Eine the food containing chamber, -there'by avoiding any problem of food particles passing out of the pouch through these slots. It would o:E course 'be possible to place the fork lift slots within the food contain-ing chamber by burning the slot through the pouch structure in such a manner that -the edges of the slot are welded together.
The wide overlapped seam is sea:Led w:ith at least two, relatively narrow, spaced-apart longitu-dinal seals, with at least one seal at or c:Lose to each edge o:E the overlapped web. Narrow seals are desirable so as to preserve, a.s much as poss:ible, the porosity of the pouch. Narrow seals are clesirw ably made by the use of impulse or induction seal:ing equipment which i.s known to those skilled in the art as being par-ticularly suited for heat sealing unsup-por-ted thermoplastic films. According to this invention, two pairs of induction sealing bars may be utilizecl to provide two, continuo-us, longitudinal seals at each edge of the overlapped web. Altern-a-tively, the seal.s may be formed by resistance sealing bars which have a release coating.
In order to provide a we'b material having sufficient s-tr-uctural strength to function as a boil-in-bag pouch and to retain all of the food prod-uc-t within the pouch, the web will typically contain a uni.form distribution of relatively small perforations or openings. The openings may be in the or(ler of abo~t :L.5 mrn (().06 -in) or less with the web hav:ing an open area of from abowt 5 to 50%, preferably in e~cess of 20%. By means o~ this invention, films having either reduced thickness 05 and/or increased open area may be utilized without decreasing the tear strength of the pouch at the fork lift sLots. A preferred embodiment of this invention utilizes an embossed polyethylene filrn having a base sheet thickness of abowt 0.043 mm, an embosed film thickness of abou-t 0.5 mm and an open area of approximately 35% comprised of about 55 holes per cm2 with each hole having a diameter of about 0.75 mm.
The porosity oE the pouch will generally be reduced if not eliminated in the immediate area of the heat seal. Thus, the use of a single wide heat seal, extending to width of the overlapped seam, is to be avoided since the flow of water into and out of the bag during cook:ing and draining wo-ulcl be red-lcecl. A wide seal would also require a higher energy input than the narrow, spaced-apart seals oE
this invention.
It would also be desirable to have the top an bottom of each pouch sealed by means of two, narrow, spaced-apart horizontal seals as opposed to single, wide top and bottom seals. The horizontal apertures or fork lift slots would be positioned between these seals. Sealing bars for forming the -top and bottom seals can be mounted for reciprocal motion into and out of engagement wi-th a continuous stream of over-lapped web material, and these bars may contain cooling means~ such as circulating chilled water.
In this manner the seal is cooled and set prior to the bars being opened and the risk of the seal being pulled apart as the sealing bars are moved out of engagement w-itll the pouch i6 redUCe(l. li would also be possib:Le to obtain seals at the top and bottom eclge o:E each pouch by usirlg a hot wire cwtof~ be-tween pouches.
05 The boi.1 in bag pouch of th:is invention is inost suitable for partic~llate, dried food rrlaterial which is to be rehyclrated during cooking. Such materials as uncooked or partially-cooked rice, pasta, dried beans, lentils and the like, may be used in conjunc-tion with the pouch of this inven-tion.

Description of Drawings Fig. 1 depicts the method of Eorming the boil-in-bag pouch of this invention, clearly illustrating the formation of the wide, overlapped, ].ongitudinal seam .
Fig. 2 depicts a specific embodiinent o-E the boil-in-'bag pouch of this invention illwstrating two narrow spaced-apart, longitudinal seals as well as two, narrow, spaced apart transverse seals at both the top and 'bottom ends of the powch.

Best Mode :Eor Carrying Out the Tnvention As shown in Fig. 1 a single we'b (l) of a per-merable heat sealable material is drawn around aforming/filling tube (2) in a manner such that the edges of the web (3 and ~) are overlapped and form a two-ply region (5) e~tending in the logitudinal direction. The edges of the overlapped web are then heat-sealed to the web by means of a conventional heated rolls or parallel impul.se sealing bars (not shown). Fig. 1 also clepicts the completed bottom end of a pouch consisting of two, spaced apart transverse heat seals (6 and 7) which could be conveniently made by two sets of parallel sealing bars. A~ls0 shown i.n this f:igwre :is a fork :litt slot (8) positioned between the spaced-apart longituclinal seals so that the slot -is Eorrned tllrough three pl.ys of the web mater:ial.
05 Fig. 2 depicts a completed boil-:in-bag pouch showing spaced apart traverse seals at both the top (9, 10) and bottom (6,7) of the bag as well as two spaced apart longitudinal heat seals (12,13) which form the wide ove-r].apped seam of the invention. In operation, as will be appreciated by those skilled in the ar-t, the bottom seals (6,7) and bottom fork lift slot (8) of one pouch can be formed at the same time the top seals (9,10) and top fork lift opening (11) are being formed in a lower adjacent pouch.
Severing of the pouches from each other may also be effected at this time. ~s earlier noted, :in lieu o:E
end seals positi.oned at 7 and 9, it would be possi-ble to simultaneously obtain seals at the to~p and bottom edges of adjacent bags and sever adjacent bags by pass:i.ng a hot wire between two acljacent pouches. ~s is wel1 known to those skilled in the art, the form/fill/seal sequence used in the process of this invention proceeds with at least one bottom seal being formed in each consecutive pouch prio:r to the pouch receiving the food product from tube (2) and thereafter at least one top seal is formed. The spaced-apart longitudinal seals are formed continu-ously as the web material passes suitable sealing means.
Having thus described the invention, what is claimed is:

Claims (4)

WE CLAIM:
1, A boil-in-bag pouch containing a hydratable food product, said pouch being formed from a single web of permeable, heat-sealable, thermoplastic film material having an open area of from 5% to 50% which web is folded to obtain an overlapped seam, said pouch having transverse top and bottom heat seals and spaced apart longitudinal heat seals positioned to seal the edges of the overlapped web, said longitudinal seals being spaced a distance of at least 2.5 cm, the top and bottom ends of the pouch each containing a horizontal aperture of at last 1.9 cm in length within the region of the overlapped seam and between the spaced apart longitudinal seals.
2. The boil-in-bag pouch of claim 1 wherein the food product is a partially-cooked and dried rice.
3. The boil-in-bag pouch of claim 1 wherein the film has a base thickness of less than 0.06 mm.
4. The boil-in-bag pouch of claim 1 wherein the open area is in excess of 20%.
CA000423683A 1982-03-29 1983-03-15 Boil-in-bag pouch Expired CA1191112A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36272782A 1982-03-29 1982-03-29
US362,727 1982-03-29

Publications (1)

Publication Number Publication Date
CA1191112A true CA1191112A (en) 1985-07-30

Family

ID=23427289

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000423683A Expired CA1191112A (en) 1982-03-29 1983-03-15 Boil-in-bag pouch

Country Status (4)

Country Link
CA (1) CA1191112A (en)
DE (1) DE3310390A1 (en)
GB (1) GB2117350B (en)
SE (1) SE8301720L (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0465893A3 (en) * 1990-07-03 1992-07-01 Kanebo Ltd. Encased instantly cookable pasta and method and apparatus for manufacturing same
DE4138684A1 (en) * 1991-11-25 1993-05-27 Heigl S Kartoffelveredelungs G Vacuum packed potato salad - comprises salad packed and sealed in boiling-resistant polyethylene@ foil for heating in water bath
FR2688765B1 (en) * 1992-03-17 1995-05-19 Rcl BAG AND METHOD FOR EMPTYING THE SAME.
GB2283007A (en) * 1993-10-19 1995-04-26 Mars Inc Boil-in-bag sachet with tear-off strip
US5871783A (en) 1996-08-22 1999-02-16 Mars, Incorporated Apparatus for ultrasonically forming confectionery products
US5861185A (en) 1996-08-22 1999-01-19 Mars, Incorporated Ultrasonic forming of confectionery products
US5871793A (en) 1996-11-27 1999-02-16 Mars Incorporated Puffed cereal cakes
DE29622256U1 (en) * 1996-12-21 1997-03-06 Brückner-Werke KG, 20097 Hamburg Food pack
GB2335910B (en) 1998-04-01 2002-07-03 Masterfoods S A Nv Boil-in-bag sachet
US6153232A (en) * 1999-02-11 2000-11-28 Uncle Ben's, Inc. Boil-in-bag package
US6395317B1 (en) 1999-02-11 2002-05-28 Mars Incorporated Process and apparatus for forming dual compartment pouches from a continuous web
US6574944B2 (en) 2001-06-19 2003-06-10 Mars Incorporated Method and system for ultrasonic sealing of food product packaging
US6655948B2 (en) 2001-08-31 2003-12-02 Mars, Incorporated System of ultrasonic processing of pre-baked food product
US6635292B2 (en) 2001-10-26 2003-10-21 Mars, Incorporated Ultrasonic rotary forming of food products
GB0922093D0 (en) 2009-12-18 2010-02-03 Mars Inc Boil-in-bag pouch

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1903456A1 (en) * 1969-01-24 1970-08-13 Eichner Organisation Gmbh Elec Arrangement for the power supply of reversed moving consumers
DE8033472U1 (en) * 1980-12-17 1981-04-16 Bischof Und Klein Gmbh & Co, 4540 Lengerich Tubular pouch

Also Published As

Publication number Publication date
GB8307524D0 (en) 1983-04-27
DE3310390A1 (en) 1983-09-29
SE8301720L (en) 1983-09-30
GB2117350A (en) 1983-10-12
GB2117350B (en) 1986-05-21
SE8301720D0 (en) 1983-03-28
DE3310390C2 (en) 1992-07-09

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Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry
MKEX Expiry

Effective date: 20030315