Multi-layer sandwich sheet and packaging using the said sheet

Details Multi-layer sandwich sheet and packaging using the said sheet Multi-layer sandwich sheet and packaging using the said sheet

1988-07-18

1991-02-05

Seidleck, James

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

239 34, 424 78, 428339, 4284744, 428457, 428480, 428522, 428523, 428905, A61K 3174, A61L 21904

Patent

active

049903810

ABSTRACT:
Multi-layer laminated sandwich sheet, comprising at least two layers which are superimposed and stuck together by welding or gluing, one layer being constituted by a material impervious to the active volatile agents of a perfuming or deodorizing composition, of an aroma or of an insecticidal or bactericidal substance, and the other layer being composed of a film made from a polymer or a copolymer with a polyolefin base or from a copolymer of polyamide and polyether, which film contains, in dispersed and homogeneous phase, a base constituted by a perfuming or deodorizing composition, an aroma or an insecticidal or bactericidal substance, and packaging utilizing the said sheet.

REFERENCES:
patent: 4631231 (1986-12-01), Stendel et al.
patent: 4634614 (1987-01-01), Holzner
patent: 4720409 (1988-01-01), Spector
patent: 4722815 (1988-02-01), Shitanai
patent: 4808454 (1989-02-01), Saitoh

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