| 摘要 |
PROBLEM TO BE SOLVED: To prepare a film for stretch wrapping having suitable stretching properties and automatically wrapping properties suitable for high magnification stretch wrapping without causing deformation of or damage to a tray and capable of providing a tight wrapping. SOLUTION: This film for stretch wrapping has 500-900% tensile elongation at break in the transverse direction of the film, 0.8-2.5 ratio of the tensile elongation at the break in the transverse direction to that in the extrusion direction, and 50-75% rate of stress relaxation. Further, the film comprises a propylene- based resin, preferably the one having 0.3-15g/10min MFR and 40-80wt.% weight proportion of amorphous component measured by a pulse-method of NMR. |
