STRETCH FILM INCORPORATING A SLIP SKIN LAYER
A stretch film incorporating a cling layer and a slip skin layer is provided, the cling layer comprising a 25% to 75% ethylene-based elastomer blend in a metallocene linear low density polyethylene and the slip skin layer comprising an ultra-high molecular weight polysiloxane polymer of between 5% and 10% by weight.
1 . A stretch film, said stretch film comprising:
a cling layer; and
a slip skin layer,
wherein the cling layer further comprises a 25% to 75% ethylene-based elastomer blend in a metallocene linear low density polyethylene, and
said slip skin layer further comprises an ultra-high molecular weight polysiloxane polymer of between 5% and 10% by weight.
2 . The stretch film of claim 1 , further comprising a polypropylene-based elastomer blend.
3 . The stretch film of claim 2 , wherein said elastomer blend further comprises at least one of an ethylene-based elastomer blend and a polypropylene-based elastomer blend.
4 . The stretch film of claim 1 , wherein the slip skin layer comprises a coefficient of friction less than or equal to 1.
5 . The stretch film of claim 1 , wherein the slip skin layer comprises a coefficient of friction less than or equal to 0.8.
6 . The stretch film of claim 1 , wherein the slip skin layer comprises a coefficient of friction less than or equal to 0.6.
7 . The stretch film of claim 1 , wherein the slip skin layer comprises a coefficient of friction less than or equal to 0.4.
8 . The stretch film of claim 1 , wherein the slip skin layer comprises an ultra-high molecular weight polysiloxane polymer.
9 . The stretch film of claim 1 , wherein the slip skin layer further comprises a dosed 10% to 25% loaded masterbatch.
10 . The stretch film of claim 1 , wherein the slip skin layer further comprises a dosed 5% to 50% loaded masterbatch.
11 . The stretch film of claim 1 , wherein the slip skin layer comprises a dosed 10% of a 25% loaded masterbatch further comprising an ultra-high molecular weight polysiloxane polymer reacted with a polypropylene polymer.
12 . The stretch film of claim 1 , wherein the slip skin layer comprises a non-migratory urethane.
13 . The stretch film of claim 1 , wherein the slip skin layer comprises a polyolefin resin, further comprising at least one polyethylene resin, polypropylene resin and combinations thereof.
14 . The stretch film of claim 2 , wherein the slip skin layer further comprises a random co-polymer polypropylene.
15 . The stretch film of claim 1 , wherein the cling layer comprises a lesser amount of cling additive.
16 . The stretch film of claim 2 , wherein the cling layer comprises an m-polypropylene elastomer resin.
17 . The stretch film of claim 1 , wherein the stretch film comprises a plurality of slip skin layers disposed in communication with additional internal layers.
18 . The stretch film of claim 1 , wherein each skin layer comprises between about 4% and about 20% of the total thickness of the film, and the internal layers comprise between about 60% and about 92% of the total film thickness.
19 . The stretch film of claim 1 , wherein the total thickness of the film is greater than 25 microns.
20 . The stretch film of claim 1 , wherein the total thickness of the film ranges from between about 8 microns and about 50 microns.
21 . The stretch film of claim 1 , wherein the total thickness of the film is less than about 13 microns.
22 . The stretch film of claim 1 , wherein the film thickness is about 10 microns.
23 . The stretch film of claim 1 , wherein the slip skin layer maintains stretch functionality over a stretch range from between about 0% and about 350%.