Easily peelable laminated film

Abstract

An easily peelable laminated film includes a laminate of a peelable surface layer (B) having a peeling strength of 5 to 100 g/cm with a base layer (A) containing a thermoplastic resin. The laminated film of the invention provides an easily peelable laminated film excellent in water resistance as a base materialfor, for example, concealing seals and labels for preventing re-pasting. The easily peelable laminated film of the invention requires no specific process to start peeling.

1 . An easily peelable laminated film (i) comprising laminate of a peelable surface layer (B) having peeling strength of from 5 to 150 g/cm, and a base layer (A) comprising a thermoplastic resin.  
     
     
         2 . The easily peelable laminated film (i) as claimed in  claim 1 , wherein the peelable surface layer (B) is a stretched film.  
     
     
         3 . The easily peelable laminated film (i) as claimed in  claim 1 , wherein the base layer (A) and the peelable surface layer (B) are stretched at least in a monoaxial direction after being laminated.  
     
     
         4 . The easily peelable laminated film (i) as claimed in  claim 1 , wherein the peelable surface layer (B) comprises a thermoplastic resin.  
     
     
         5 . The easily peelable laminated film (i) as claimed in  claim 1 , wherein the peelable surface layer (B) contains from 10 to 80 wt % of an inorganic fine powder and/or an organic fine powder, and from 90 to 20 wt % of a thermoplastic resin.  
     
     
         6 . The easily peelable laminated film (i) as claimed in  claim 1 , wherein the peelable surface layer (B) has a layer thickness of from 0.1 to 100 μm, and the base layer (A) has a layer thickness of from 10 to 500 μm.  
     
     
         7 . The easily peelable laminated film (i) as claimed in  claim 1 , wherein the easily peelable laminated film (i) has an opaqueness of from 60 to 100%.  
     
     
         8 . The easily peelable laminated film (i) as claimed in  claim 1 , wherein the base layer (A) has a laminated structure (A 1 )/(A 2 ); the structure of a layer (A 1 ) contiguous to the peelable surface layer (B) in the laminated structure comprises a thermoplastic resin film containing from 2 to 60 wt % of an inorganic fine powder and/or an organic fine powder, and from 98 to 40 wt % of a thermoplastic resin; the content of the inorganic fine powder and/or the organic fine powder in the layer (A 1 ) is less than that in the peelable surface layer (B) by 8 wt % or more; and an outer layer (A 2 ) on the surface of layer (A 1 ) opposite to the peelable surface layer (B) comprises a thermoplastic resin film containing from 0 to 80 wt % of an inorganic.fine powder and/or an organic fine powder, and from 100 to 20 wt % of a thermoplastic resin.  
     
     
         9 . The easily peelable laminated film (i) as claimed in  claim 1 , wherein a protective layer is provided on the outermost surface of peelable surface layer (B).  
     
     
         10 . The easily peelable laminated film (i) as claimed in  claim 1 , wherein a coat layer is provided on at least one side of the easily peelable laminated film (i).  
     
     
         11 . An easily peelable laminated label (ii), wherein a pressure-sensitive adhesive is provided on the exposed side of peelable surface layer (B) of the easily peelable laminated film (i) as claimed in  claim 1 .  
     
     
         12 . An easily peelable laminated label (ii), wherein a pressure-sensitive adhesive and a release paper in this order are provided on the exposed side of peelable surface layer (B) of the easily peelable laminated film (i) as claimed in  claim 1 .  
     
     
         13 . The easily peelable laminated label (ii) as claimed in  claim 11 , wherein the peeling start stress is 500 g/cm or less.  
     
     
         14 . The easily peelable laminated label (ii) as claimed in  claim 11 , wherein letters or graphic data are provided under the peelable surface layer (B) or the pressure-sensitive adhesive and are recognizable by peeling the base layer (A) off from the easily peelable laminated label (ii).