Stock material or miscellaneous articles – Composite – Of polyester
Reexamination Certificate
2011-05-10
2011-05-10
Chen, Vivian (Department: 1787)
Stock material or miscellaneous articles
Composite
Of polyester
C428S034900, C428S035100, C428S910000, C528S302000, C528S305000, C528S307000, C528S308000, C528S308600
Reexamination Certificate
active
07939174
ABSTRACT:
A film roll of a heat-shrinkable polyester film characterized in that the heat-shrinkable polyester film meets the following requirements (1) and (2).(1) When samples are cut off therefrom at an almost equal interval along the longitudinal direction, and immersed in hot water at 85° C. for 10 seconds, subsequently in water at 25° C. and withdrawn, heat-shrinkage percentages in the maximum shrinkage direction of all the samples are 20% or more.(2) When raw polymers used for production of the film above comprises of a major constitutional unit and one or more sub constitutional units different therefrom; and the content of the primary sub constitutional unit is determined, the content of the primary sub constitutional unit in each sample is more than 7 mole % in 100% of all constitutional units, and when an average of the contents of the primary sub constitutional unit is calculated, the contents thereof of all the samples fall within a range of ±2 mole % relative to the average.
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Hayakawa Satoshi
Ito Katsuya
Komeda Shigeru
Nose Katsuhiko
Tabota Norimi
Chen Vivian
Kenyon & Kenyon LLP
Toyo Boseki Kabushiki Kaisha
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