US 8,968,647 B2 · Fragrance delivery system

Abstract

A multi-layer article is provided containing a sorbent layer having a first side and a second side; a vapor permeable or microporous layer adjacent to at least a portion of at least one of the first side and second side of the sorbent layer; optionally, a second vapor permeable or microporous layer on a side of the vapor permeable or microporous layer not adjacent to the sorbent layer; optionally, a vapor impermeable layer adjacent to a portion of the sorbent layer not adjacent to the vapor permeable or microporous layer; and an active composition having at least one volatile component; wherein the sorbent layer contains the active composition, and each layer is capable of being formed into a required shape or structure; and a method for its use in treating the atmosphere of an environment such as a compartment or localized space.

Claims23

Dependent claims

A multi-layer article, comprising:

a sorbent layer having a first side and a second side;
a vapor permeable or microporous layer adjacent to at least a portion of at least one of the first side and second side of the sorbent layer;
optionally, a second vapor permeable or microporous layer on a side of the vapor permeable layer not adjacent to the sorbent layer;
optionally, a vapor impermeable layer adjacent to a portion of the sorbent layer not adjacent to the vapor permeable or microporous layer;
and
an active composition comprising at least 60% by weight of at least one volatile component having a vapor pressure of 0.03 to 2 mm Hg when measured at 20° C. and 760 mm Hg;
wherein
the sorbent layer is a nonwoven material having a density of from 2.0 to 25 mg/cc,
the sorbent layer comprises the active composition, and
each layer is capable of being formed into a required shape or structure.

7 more elements

Dependencies are inferred from the claim text.

Fragrance delivery system

Life of this patent

Fragrance delivery system

Life of this patent

Abstract

Claims23