Back to results
US 10,336,521 B2Granted
Film for packaging and packaging bag
AssigneeToyobo Co., Ltd.
InventorsTomoyuki Hashida, Yosuke Otani
Life of this patent
Estimating the term…
Abstract
It is provided that a film for packaging and a packaging bag that can suppress diffusion of odor to hold the twisted state even after placing an object at the center of a film, wrapping the object, twisting the upper part of the object and leaving it for a certain time. The film of the present invention is the film for packaging comprising a resin film, wherein the twist holding angle is 400 degrees or more.
Claims13
A film for packaging comprising a polyester-based resin film, wherein
- the resin film comprises ethylene terephthalate in an amount of more than 50% by mol, based on 100% by mol of the total constituent units of the polyester,
- the resin film comprises a polyester-based resin containing a monomer selected from neopentyl glycol, 1,4-cyclohexanedimethanol, and a combination thereof, which monomer is an amorphous component,
- the total units derived from a polyhydric alcohol other than ethylene glycol and units derived from a polycarboxylic acid other than terephthalic acid is 13% by mol or more, based on 100% by mol of the total constituent units of the polyester,
- the resin film has a density of 1.29 g/cm3 or more and 1.33 g/cm3 or less, and
- the resin film has a twist holding angle of 400 degrees or more.
2 more elements
Dependencies are inferred from the claim text.