Abstract: A multi-layer film contains at least a first layer, a second layer inside thereof, and a third layer inside the second layer. The first layer contains a polypropylene resin (PP). The second layer contains a polyethylene resin (PE) having 70 to 90 wt% of a lower crystalline component (LCC) and 10 to 30 wt% of a higher crystalline component (HCC). The PE has a melt flow rate of 0.1 to 20 g/10 min and in a temperature rising elution fraction elution curve, an elution peak temperature of the LCC is from 45 to 85° C; the ratio of (peak height of LCC)/(height of the minimum valley between LCC peak and HCC peak) is 9 or more; an area ratio of the elution peak temperature or less of LCC is 35% or more. The third layer contains a) PP or b) a high-pressure low density PE having an extrapolation melting completion temperature of melting of 110° C or more; or c) a copolymer of ethylene/C3-18 &agr;-olefin having a density of 0.920 g/cm3 or more.

Abstract: A tacky film is provided which is self-tacky, has a satisfactory tack strength when adhered to itself, can have any desired tack strength, and has satisfactory blocking resistance. In particular, a tacky film suitable for use as a tacky layer of a pallet stretch film is provided. A tacky film comprising a linear low-density polyethylene having an MFR of from 0.1 to 10 g/10 min and a density of from 0.884 to 0.910 g/cm3; or a tacky film comprising a polyethylene resin composition which is a resin composition obtained by blending ingredient A [a linear low-density polyethylene having an MFR of from 0.1 to 10 g/10 min and a density of from 0.890 to 0.940 g/cm3] with ingredient B [a linear low-density polyethylene having an MFR of from 0.1 to 50 g/10 min and giving, in differential scanning calorimetry (DSC), a melting peak whose extrapolated melting termination temperature is 98° C. or lower] and which has an ingredient B content of 80% by weight or lower and a density of from 0.884 to 0.

Abstract: A stamper holding apparatus comprises a holding member for holding a stamper on the mirror surface of one of stationary and movable mirror blocks, a plurality of stationary side actuation units arranged around the outer periphery of the stationary mirror block, a plurality of movable side actuation units arranged around the outer periphery of the movable mirror block, and operating rods of each stationary side actuation units and operating rods of each movable side actuation units being alternatively engageable with the holding member.