Release film formed from polylactic acid-containing resin

1. A release film formed from a polylactic acid-containing resin composition comprising:

a polylactic acid; and

a (meth)acryl-silicone copolymer formed from (i) methyl (meth)acrylate and (ii) a reactive silicone having a reactive group selected from a (meth)acryloyl group or a mercapto group, wherein the (meth)acryl-silicone copolymer has a weight average molecular weight of 25,000 or more and wherein the (meth)acryl-silicone copolymer comprises 10 to less than 50 weight percent of the silicone,

wherein the weight ratio between the polylactic acid and the (meth)acryl-silicone copolymer is 99:1 to 50:50.

2. The release film according to claim 1 , wherein the (meth)acryl-silicone copolymer is a graft copolymer and/or a block copolymer.

3. The release film according to claim 1 , wherein a 30 μm-thick film formed from the polylactic acid-containing resin composition has a haze value, measured in accordance with JIS K 7136, of 10% or less.

4. The release film according to claim 1 , wherein the release film is positioned adjacent to a pressure-sensitive adhesive layer.

5. The release film according to claim 4 , wherein a 30 μm thick first film formed from the polylactic acid-containing resin composition has a peel force of 65 percent or less than the peel force of a 30 μm thick second film formed from a composition consisting only of the polylactic acid of the polylactic acid-containing resin composition.

6. A polylactic acid-containing resin release film laminate comprising:

a first release film according to claim 1 ; and

a second polylactic acid-containing resin film,

wherein the second polylactic acid-containing resin film is stacked on the first release film.

7. The release film laminate according to claim 6 , wherein the first release film is positioned adjacent to a pressure-sensitive adhesive layer.