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US 4,861,632 AGranted
Laminated bag
OwnerMichael A. Caggianoinventor
Life of this patent
Estimating the term…
Abstract
A laminated packaging material from which package type containers are fabricated for storing or transporting a variety of products ranging from dry food-stuffs to electronic equipment where maintenance of a dry environment is a requirement, comprising an outer imperforate water impervious layer, a middle layer of absorbent material and an inner perforated moisture impervious layer.
Claims14
A sealed bag container formed from a laminated packaging material able to establish and maintain a dry environment within said container comprising:
- a) an outer imperforate moisture impervious layer defining an interior within:
- b) a middle moisture absorbent layer within said interior;
- c) an inner layer apertured by a plurality of perforations substantially uniformly distributed over the whole area circumscribed by a perimeter smaller than the perimeter of said middle absorbent layer located within said interior;
- d) said outer and inner layers overlying and covering said absorbent layer and having their peripheral edges extending beyond the edges of said absorbent layer, said inner and outer layers being sealed together at their peripheral edges to enclose said absorbent layer, wherein said sealed bag container is formed by attaching the peripheral edges of one or more sheets of said packaging material together, said inner perforated layers being in a superimposed configuration thereby creating a moisture trap space.
1 more element
Dependencies are inferred from the claim text.