Multilayer Films and Laminates Containing Slip Agents

Abstract

The present disclosure provides a multilayer film. The multilayer film includes at least two layers including a sealant layer and a second layer in contact with the sealant layer. The sealant layer contains (A) a first ethylene-based polymer having a density from 0.900 g/cc to 0.925 g/cc and a melt index from 0.5 g/10 min to 30 g/10 min; and (B) a polyethylene-polydimethylsiloxane block copolymer having a weight average molecular weight from 1,000 g/mol to 10,000 g/mol. The second layer contains a second ethylene-based polymer.

1 . A multilayer film comprising at least two layers comprising:
 a sealant layer comprising
 (A) a first ethylene-based polymer having a density from 0.900 g/cc to 0.925 g/cc and a melt index from 0.5 g/10 min to 30 g/10 min; 
 (B) a polyethylene-polydimethylsiloxane block copolymer having a weight average molecular weight from 1,000 g/mol to 10,000 g/mol; and 
   a second layer in contact with the sealant layer, the second layer comprising a second ethylene-based polymer.   
     
     
         2 . The multilayer film of  claim 1 , wherein the polyethylene-polydimethylsiloxane block copolymer comprises a polyethylene block having a crystallinity from 0% to less than 30%. 
     
     
         3 . The multilayer film of  claim 1 , wherein the polyethylene-polydimethylsiloxane block copolymer comprises from 25 wt % to 75 wt % polydimethylsiloxane, based on the total weight of the polyethylene-polydimethylsiloxane block copolymer. 
     
     
         4 . The multilayer film of  claim 1 , wherein the sealant layer comprises from 0.01 wt % to 2.0 wt % polyethylene-polydimethylsiloxane block copolymer, based on the total weight of the sealant layer. 
     
     
         5 . The multilayer film of  claim 1 , wherein the first ethylene-based polymer is selected from the group consisting of an ethylene homopolymer, an ethylene/α-olefin copolymer, and combinations thereof. 
     
     
         6 . The multilayer film of  claim 1 , wherein the sealant layer has a pre-lamination coefficient of friction (COF) from 0.01 to 0.45, and a haze from 0% to 5%. 
     
     
         7 . A laminate comprising the multilayer film of  claim 1 . 
     
     
         8 . A laminate comprising:
 a film comprising a sealant layer comprising:
 (A) a first ethylene-based polymer having a density from 0.900 g/cc to 0.925 g/cc and a melt index from 0.5 g/10 min to 30 g/10 min; 
 (B) a polyethylene-polydimethylsiloxane block copolymer having a weight average molecular weight from 1,000 g/mol to 10,000 g/mol; and 
   a substrate; and   an adhesive layer adhering the film to the substrate.   
     
     
         9 . The laminate of  claim 8 , wherein the polyethylene-polydimethylsiloxane block copolymer comprises a polyethylene block having a crystallinity from 0% to less than 30%. 
     
     
         10 . The laminate of  claim 8 , wherein the polyethylene-polydimethylsiloxane block copolymer has a weight average molecular weight (Mw) from 1000 g/mol to 10000 g/mol. 
     
     
         11 . The laminate of  claim 8 , wherein the polyethylene-polydimethylsiloxane block copolymer comprises from 25 wt % to 75 wt % polydimethylsiloxane, based on the total weight of the polyethylene-polydimethylsiloxane block copolymer. 
     
     
         12 . The laminate of  claim 8 , wherein the sealant layer comprises from 0.01 wt % to 2.0 wt % polyethylene-polydimethylsiloxane block copolymer, based on the total weight of the sealant layer. 
     
     
         13 . The laminate of  claim 8 , wherein the sealant layer has a change in coefficient of friction (ΔCOF) from 0.01 to less than 0.2 and a haze from 0% to 5%. 
     
     
         14 . The laminate of  claim 8 , wherein the substrate comprises a component selected from the group consisting of a second ethylene-based polymer, a propylene-based polymer, polyamide, polyester, ethylene vinyl alcohol copolymer, polyethylene terephthalate, ethylene vinyl acrylate copolymer, ethylene methyl acrylate copolymer, ethylene ethyl acrylate copolymer, ethylene butyl acrylate copolymer, ethylene acrylic acid copolymer, ethylene methacrylic acid copolymer, an ionomer of ethylene acrylic acid, an ionomer of methacylic acid, maleic anhydride grafted ethylene-based polymer, a metal foil, and combinations thereof. 
     
     
         15 . The laminate of  claim 8 , wherein the film further comprises a core layer between a skin layer and the sealant layer; and
 the skin layer is in contact with the adhesive layer.