Claims
- 1. In a method of forming at least one flexible pouch having a sealed product-containing pocket for a viscous flowable food product and integral collar-forming structure externally of said pocket enabling said pouch to be suspended from an object, said pouch being formed of two sheets each constituted of a liquid-impervious laminated flexible material including a plastic film web and being arranged to provide two superimposed facing plastic film webs, which are advanced in the longitudinal direction of the webs; comprising the steps of:
- (a) forming a pair of parallel spaced, continuous slits extending through at least one of said sheets of laminated material in the advancing direction thereof, said continuous slits being offset towards one longitudinal edge of said webs;
- (b) forming first and second parallel spaced continuous side seals between said facing plastic webs in the advancing direction of said webs, one said side seal extending along the longitudinal edge of said webs remote from said continuous slits, and the second of said side seals being located proximate the inwardly located continuous slit in said web on the side thereof towards said first side seal;
- (c) forming a continuous cross seal between said facing plastic webs extending over the width of said webs transversely of the advancing direction of said webs, said cross seal welding said containuous slits in the facing plastic webs at the intersecting locations therewith;
- (d) filling a product into an upwardly opening pocket between said facing plastic webs bounded by said first and second side seals and said cross seal;
- (e) and forming a second continuous cross seal between said webs subsequent to advancement of said webs a predetermined distance in the longitudinal direction of the webs so as to seal the pocket containing the product and concurrently welding said continuous slits in the facing plastic webs at the intersecting locations therewith, whereby separation of the webs aong said continuous slits extending in the longitudinal direction of the webs intermediate said transverse seals provides a loop-like collar-forming strip of web material intermediate said continuous slits for suspending the pouch from the object.
- 2. A method as claimed in claim 1, comprising sequentially forming a plurality of said pouches during the advance of said webs, each subsequently formed cross seal for each said pouch forming the leading cross seal for a successive pouch and the trailing cross seal for a proceding pouch; and forming severing lines for separating said pouches extending coaxially with and centrally through said cross seals.
- 3. A method as claimed in claim 2, wherein each said severing line is a continuous slit extending through said pouches.
- 4. A method as claimed in claim 2, wherein each said severing line is a discontinuous slit to facilitate subsequent separation of attached pouches into individual pouches by tearing along said slit.
- 5. A method as claimed in claim 2, wherein each said severing line comprises a series of perforations to facilitate subsequent separation of said attached pouches into individual pouches by tearing along said perforations.
- 6. A method as claimed in claim 1, wherein said flexible material webs are constituted of a foil-lined, liquid-impervious plastic film material.
- 7. A method as claimed in claim 1, wherein the outer surfaces of said pouches have product-identifying and advertising legends imprinted thereon.
- 8. A method as claimed in claim 1, wherein said seals are constituted of heat seals.
- 9. A method as claimed in claim 1, wherein said continuous slits extend through both of said superimposed webs.
- 10. A method as claimed in claim 1, wherein said flexile material webs are constituted of a liquid-impervious plastic film material.
Parent Case Info
This is a divisional of copending application Ser. No. 656,608, filed on Oct. 1, 1984 now U.S. Pat. No. 4,635,291.
US Referenced Citations (14)
Foreign Referenced Citations (2)
Number |
Date |
Country |
1222238 |
May 1963 |
DEX |
3205340 |
Aug 1983 |
DEX |
Divisions (1)
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Number |
Date |
Country |
Parent |
656608 |
Oct 1984 |
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