CLEAR TRANSPARENT ANTI-FOG MULTI-LAYER FILM
A clear, transparent anti-fog multi-layer film with improved resistance to delamination and desirable functional endurance, which includes at least one sealing layer that contains an anti-fog additive made of a polyolefin/anti-fog agent mixture, at least one anti-fog agent barrier layer containing 80-100% propylene, and at least one outer layer.
1 - 12 . (canceled)
13 . A clear, transparent anti-fog multi-layer film with improved resistance to delamination and desirable functional endurance comprising:
at least one sealing layer that contains an anti-fog additive made of a polyolefin/anti-fog agent mixture,
at least one anti-fog agent barrier layer containing 80 to 100% polypropylene, and
at least one cover layer.
14 . The anti-fog multi-layer film of claim 13 , further comprising at least one additional functional selected from the group consisting of a gas barrier layer, a UV-protection layer, an adhesion promoter layer, an adhesive layer, a cover layer, a hard layer, a moisture barrier layer.
15 . The anti-fog multi-layer film of claim 13 , wherein the anti-fog agent barrier layer has at least 90% by weight of a propylene polymer.
16 . The anti-fog multi-layer film of claim 13 , wherein the anti-fog additive is at least one additive selected from the group consisting of an ester of a fatty acid, an aliphatic alcohol, an ethoxylated aromatic alcohol, a mono- or multi-esterified sorbitol ester, a mono- or multi-esterified glycerol ester, an ethoxylated sorbitan ester and an ethoxylated amine.
17 . The anti-fog multi-layer film claim 13 , wherein the cover layer has at least 90% of a propylene polymer.
18 . The anti-fog multi-layer film of claim 13 , further comprising a hard layer applied over the cover layer.
19 . The anti-fog multi-layer film of claim 13 , wherein at least a partial composite of the multi-layer film is co-extruded.
20 . The anti-foe multi-layer film of claim 13 , wherein the multi-layer film is sealable through the use of continuous-heating, impulse-heating, ultrasound tools.
21 . An article comprising the anti-fog film multi-layer film of claim 13 in combination with a foodstuff, packaging, a pane, an inspection window, eyeglasses, or a greenhouse.
22 . The anti-fog multi-layer film of claim 14 , wherein the anti-fog additive is at least one additive selected from the group consisting of an ester of a fatty acid, an aliphatic alcohol, an ethoxylated aromatic alcohol, a mono-esterified sorbitol ester, a multi-esterified sorbitol ester, a mono-esterified glycerol ester, a multi-esterified glycerol ester, an ethoxylated sorbitan ester and an ethoxylated amine.
23 . The anti-fog multi-layer film of claim 15 , wherein the anti-fog additive is at least on additive selected from the group consisting of an ester of a fatty acid, an aliphatic alcohol, an ethoxylated aromatic alcohol, a mono-esterified sorbitol ester, a multi-esterified sorbitol ester, a mono-esterified glycerol ester, a multi-esterified glycerol ester, an ethoxylated sorbitan ester and an ethoxylated amine.
24 . The anti-fog multi-layer film of claim 20 , wherein the tools comprise sealing jaws.