Biaxially-oriented polyester film for use as wrap-around container label, and wrap-around container label
AssigneeToyo Boseki Kabushiki Kaisha
InventorsHideki Ito, Masakazu Iwasaki
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Abstract
The invention provides a biaxially-oriented polyester film that comprises a biaxially oriented polyethylene terephthalate film and contains 9000 ppm or less of ethylene terephthalate cyclic trimer, has a molten specific resistance of within 1.0×108Ω·cm, and at least one surface of the film has a surface resistivity of 13 log Ω or less under a relative humidity of 65 %. The invention also provides a wrap-around label for a container produced from the film.
Claims14
A biaxially-oriented polyester film for use as a wrap-around container label, wherein
- the film comprises polyethylene terephthalate,
- the film has a content of polyethylene terephthalate made from recycled PET bottles of 55 wt % or more and 90 wt % or less,
- the film has a content of polyethylene terephthalate containing 6000 ppm or less of ethylene terephthalate cyclic trimer of 10 wt % or more,
- the polyethylene terephthalate containing 6000 ppm or less of ethylene terephthalate cyclic trimer is made from recycled PET bottles,
- the film has a content of ethylene terephthalate cyclic trimer of 6000 ppm or less,
- the film has a molten specific resistance of 1.0×108 Ω·cm or less at a temperature of 285° C.,
- at least one surface of the film has a surface resistivity of 13 log Ω or lower under a relative humidity of 65%, and
- the film has a shrinkage of 3% or less in each of longitudinal and width directions after treatment with hot air at 150° C. for 30 minutes.
A biaxially-oriented polyester film for use as a wrap-around container label, wherein
- the film comprises polyethylene terephthalate,
- the film has a content of polyethylene terephthalate made from recycled PET bottles of 55 wt % or more and 90 wt % or less,
- the film has a content of polyethylene terephthalate containing 6000 ppm or less of ethylene terephthalate cyclic trimer of 10 wt % or more,
- the polyethylene terephthalate containing 6000 ppm or less of ethylene terephthalate cyclic trimer is made from recycled PET bottles,
- the film has a content of ethylene terephthalate cyclic trimer of 6000 ppm or less,
- the number of foreign materials having a size of 1 mm or larger per 1 m2 of the film is less than 1.0,
- at least one surface of the film has a surface resistivity of 13 log Ω or lower under a relative humidity of 65%, and
- the film has a shrinkage of 3% or less in each of longitudinal and width directions after treatment with hot air at 150° C. for 30 minutes.
Dependencies are inferred from the claim text.