Title:
BIAXIALLY STRETCHED POLYAMIDE FILM AND PACKAGING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2023/054062
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a biaxially stretched polyamide film which has excellent bending-resistant pinhole properties and abrasion-resistant pinhole properties and can suppress the generation of foreign substances during film formation. A biaxially stretched polyamide film according to the present invention has at least two layers of an A layer and a B layer formed of a resin composition containing polyamide 6, wherein the A layer contains a bending-resistant agent, the B layer is substantially free of a bending-resistant agent, and in the measurement of dynamic viscoelasticity using a viscoelasticity measuring device under the conditions of a tensile mode, an inter-chuck distance of 20 mm, a frequency of 15 Hz, and a temperature raising rate of 5ºC/min, the loss elastic modulus E'' at 1ºC is at least 1.1×108 Pa.
Inventors:
UEDA KAZUSHIGE (JP)
GOTO TAKAMICHI (JP)
ENDO TAKURO (JP)
GOTO TAKAMICHI (JP)
ENDO TAKURO (JP)
Application Number:
PCT/JP2022/034983
Publication Date:
April 06, 2023
Filing Date:
September 20, 2022
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
B32B27/34; B32B27/18; B65D65/40
Domestic Patent References:
| WO2017217436A1 | 2017-12-21 | |||
| WO2021200489A1 | 2021-10-07 | |||
| WO2019131752A1 | 2019-07-04 |
Foreign References:
| JP2020111050A | 2020-07-27 | |||
| JPH11334007A | 1999-12-07 | |||
| JP2020163587A | 2020-10-08 | |||
| JP2003113259A | 2003-04-18 | |||
| JP2002127337A | 2002-05-08 | |||
| JP2018196929A | 2018-12-13 | |||
| JP25461599A | 1999-09-08 |
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