Easy open pouches

Inactive Publication Date: 2016-11-17
BEMIS COMPANY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]One particularly useful feature of the packages of the present invention is its usefulness in packaging food products currently packaged in No. 10 metal cans. These cans are expensive and bulky, and present significant inbound freight costs due to the weight of the cans, significant warehouse space issues for can inventory, and a disposal problem after use of the contained food product. Uti

Problems solved by technology

These cans are expensive and bulky, and present significant inbound freight costs due to the weight of the cans, si

Method used

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Examples

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working examples

[0060]The following examples illustrate certain particular embodiments of films suitable for use in forming packages and protective strips and are not to be interpreted as limiting. In the following example, resin composition percentages are based on the total weight of each film layer.

example 1

[0061]A package according to the present invention, as generally illustrated in FIG. 2, is produced from a film $00 comprising a laminated structure as illustrated in FIG. 13. The package also includes a protective strip as generally illustrated in FIG. 2, which is produced from a film 600 comprising a peelable / fracturable heat sealing layer 601, a peelable / fracturable second layer 602, and a third heat sealing layer 603, as illustrated in FIG. 14. In this example, film 500 includes a 2.0 mil thick, seven-layer blown coextruded film comprising a first peelable / fracturable heat sealing layer 501, a peelable / fracturable second layer 502, a third layer 503, a fourth layer 604, a fifth layer 505, a sixth layer 506, and a seventh layer 507. The seven-layer blown film was adhesively laminated via adhesive layer 508 to a 35-gauge thick, aluminum foil layer 509. A second adhesive layer 510 adhesively laminated a 60-gauge thick, biaxially oriented cast film of polyamide 511 to the foil layer...

example 2

[0080]A package according to the present invention was made, as generally described above for Example 1 with films 500 and 600, except for film layers 501 and 502 of film 500 had the following structure and layer compositions:

[0081]Layer 501 (Sealant): 99 wt.-% polypropylene copolymer (PP)-Pro-fax SA861 (LyondellBasell Industries Holdings, B.V., The Netherlands)+1.0 wt.-% processing additives

[0082]Layer 502 (Peelable): 81 wt.-% ethylene vinyl acetate copolymer (EVA)-DuPont™ Elvax® 3135X (E.I. du Pont de Nemours and Company, Inc., Wilmington, Del., USA)+19 wt.-% polybutene-1 (PB)-PB 8640M (LyondellBasell Industries Holdings, B.V , The Netherlands)

[0083]The packages according to the invention are preferably fabricated continuously from a continuous web or roll stock. The roll stock is slit to a desired width and fed into a bag making equipment, wherein the first and second sides of the packaging film are brought together to form a tube member in a lap-type or butt-type tape seal confi...

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Abstract

The present invention relates to improved easy-open packages for packaging beverages and wet food products for use with form-fill-seal machines, especially vertical form-fill-seal machines, and/or under hot fill or retort sterilization conditions. The packages comprise a frangible first seal connecting the first side of the web to the second side of the web and defining a tube member having an inner surface, an outer surface, a first package wall, a second package wall, opposing first and second package edges, a first package end and an opposing second package end; wherein the frangible first seal exposes a cross-sectional edge of the multilayer film inside the product receiving chamber. The packages further include a protective strip having a frangible fourth seal provided through the strip and the inner surface of the tube member; wherein the protective strip covers the exposed cross-sectional edge of the multilayer film

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to food packages and particularly to vertical form fill seal and horizontal form fill seal pouches suitable for use in applications where the food product must undergo a retort or aseptic process while remaining inside the package.[0002]It is common practice in packaging many goods, including food items, to use what is generally known as form-fill-seal equipment. In the vertical form-fill-seal arrangement, flexible packaging material is fed from a rollstock to a tube former where a tube is fashioned from the web material into a vertically dependent, upwardly open tube having overlapping longitudinal edges. These overlapping edges are subsequently sealed together longitudinally and the end of the tube is sealed together by a pair of transverse heat seals which are vertically spaced apart. At this point the tube is filled with a measured quantity of the product to be packaged. Often, the packaging material may be squeezed ...

Claims

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Application Information

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IPC IPC(8): B65D81/34B65D85/72B65D30/08B65D75/48B65D81/20
CPCB65D81/3415B65D75/48B65D85/72B65D81/3438B65D31/02B65D81/2007B65D65/40
Inventor SCHNABEL, DONALD C.KELLY, SCOTT J.
Owner BEMIS COMPANY INC
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