25-03-2021 дата публикации
Номер: US20210087373A1
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; anda slip skin layer,wherein the cling layer further comprises a 25% to 75% ethylene-based elastomer blend in a metallocene linear low density polyethylene, andsaid 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. ...
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