| abstract |
A food packaging stretch film made of a resin containing substantially nonchlorine and having a storage modulus (E') of from 5.0 x 10 8 to 5.0 x 10 9 ndyn/cm 2 and a loss tangent (tan δ) of from 0.2 to 0.8, as measured by dynamicnviscoelasticity measurement at a frequency of 10 Hz at a temperature ofn20°C, which has at least one layer containing the following components (D)nand (C):n (D) a propylene type polymer component which is a single propylenentype polymer or a mixture of two or more propylene type polymers and whichnhas a quantity of heat for crystallization of from 10 to 60 J/g as measured byna differential scanning calorimeter by cooling to 0°C at a scanning rate ofn10°C/min after fusing the crystal, and (C) a petroleum resin, a tepene resin, a cumarone-indene resin, a rosinntype resin, or a hydrogenated derivative thereof. |