Multi-compartment pouch having a frangible seal
First Claim
1. A multi-compartment pouch comprising:
- front and rear sheets arranged in opposing face-to-face relation and each including a top edge, a bottom edge, and opposite side edges adapted to be connected to define a sealed pouch with an interior; and
at least one frangible seal disposed in the interior of the pouch between said front and rear sheets and defining at least two separate compartments, said frangible seal comprising a first thermoplastic material attached to said front sheet and a second thermoplastic material attached to said rear sheet, said first and second materials arranged in opposing face-to-face relation across the interior of the pouch and attached to one another to define a frangible seal therebetween, said frangible seal having a seal strength that is less than the seal strength of the first material to the front sheet and the second material to the rear sheet.
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Accused Products
Abstract
The invention provides a pouch having a frangible seal comprised of two strips of thermoplastic material that are disposed in the interior of the pouch, and sealed to each other in a face-to face orientation. A first strip of thermoplastic material is sealed to an interior surface of one side of the pouch, and the second strip of thermoplastic material is sealed to an interior surface of the opposite side of the pouch. The strips of thermoplastic material are adapted to form stronger bonds with the front and rear sheets than they are with each other. As a result, the strength of the seal between the two strips of material may be controlled to produce a frangible seal that can be broken with minimal effort and without having to sacrifice the desired heat sealing properties of the film forming the pouch.
74 Citations
32 Claims
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1. A multi-compartment pouch comprising:
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front and rear sheets arranged in opposing face-to-face relation and each including a top edge, a bottom edge, and opposite side edges adapted to be connected to define a sealed pouch with an interior; and
at least one frangible seal disposed in the interior of the pouch between said front and rear sheets and defining at least two separate compartments, said frangible seal comprising a first thermoplastic material attached to said front sheet and a second thermoplastic material attached to said rear sheet, said first and second materials arranged in opposing face-to-face relation across the interior of the pouch and attached to one another to define a frangible seal therebetween, said frangible seal having a seal strength that is less than the seal strength of the first material to the front sheet and the second material to the rear sheet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A multi-compartment pouch comprising:
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front and rear sheets arranged in opposing face-to-face relation and each including a top edge, a bottom edge, and opposite side edges connected to define a sealed pouch with an interior; and
at least one frangible seal disposed in the interior of the pouch between said front and rear sheets and defining at least two separate sealed compartments, said frangible seal comprising a first thermoplastic material attached to said front sheet and a second thermoplastic material attached to said rear sheet, said first and second materials arranged in opposing face-to-face relation across the interior of the pouch and defining a frangible seal therebetween, said frangible seal having a seal strength that is less than the seal strength of the first material to the front sheet and the second material to the rear sheet. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of preparing a multi-compartment pouch comprising the steps of:
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providing a front sheet and rear sheet comprising a heat sealable film;
arranging said sheets in a face-to-face orientation to define a pouch having two opposite side edges, bottom edge, and top edge;
placing first and second strips of thermoplastic material in a substantially face-to-face orientation between said sheets to define at least two compartments;
sealing the first material to the front sheet, and the second material to the rear sheet;
forming at least one frangible seal between the first and second materials, said frangible seal having a seal strength that is less than the seal strength of the seal between the first material and the front sheet, and the second material and rear sheet; and
sealing the front and rear sheet together about the periphery of the pouch. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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Specification