Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1998-01-29
2000-01-25
Raimund, Christopher
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
442382, 442392, 442400, 442401, 5490, 5500, 5501, 5502, 156 731, 1563082, 1563084, 383 63, 383109, B29D 2200
Patent
active
060176016
ABSTRACT:
An improved allergen-barrier cover for completely surrounding an allergen-carrier article, such as bedding, is provided. The cover is formed from a multilayer fabric such as an SMS fabric that allows passage of air, but blocks the passage of allergens and liquid water. This fabric is formed into an enclosure by thermally welding any seams necessary to provide a enclosure which completely encases the allergen-carrier article except for an opening sufficient to allow insertion of the allergen-carrier article into the enclosure. The cover also includes a closure in the form of a plastic seal made up of two portions: a first portion having at least two parallel ridges spaced apart from one another by a first distance and a second portion comprising at least two parallel grooves spaced apart from one another by the same distance as the parallel ridges and sized to receive the at least two parallel ridges in sealing engagement. The first portion of the closure is melt-bonded to a first portion of the opening in the enclosure and the second portion of the closure is melt-bonded to a second portion of the enclosure such that the enclosure and the closure, when sealed, cooperate to provide an allergen-barrier cover that completely surrounds the enclosed allergen-carrier article without openings of a size sufficient to allow the passage of dust mites.
REFERENCES:
patent: 4691372 (1987-09-01), Erden
patent: 5050256 (1991-09-01), Woodcock
patent: 5321861 (1994-06-01), Dancey et al.
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