Title:
積層体
Document Type and Number:
Japanese Patent JP7283620
Kind Code:
B2
Abstract:
To provide a sealant film that is used for laminating a gas barrier layer which prevents the adsorption of components onto the contents, has high heat-seal strength in a low temperature range, and can demonstrate excellent gas barrier property, which does not deteriorate in a vapor deposition step.SOLUTION: A laminate has a gas barrier layer laminated on a sealant film. The sealant film has one or more heat-seal layers and one or more heat-resistant layers, each of which is primarily composed of ethylene terephthalate, the sealant film satisfying the following requirements (1) to (3). (1) The seal strength between the heat-seal layers is 8 or more and 30 N/15 mm or less when they are sealed together at the conditions of 140°C, 0.2 MPa, and 2 seconds. (2) The deformation rate in the longitudinal direction is 0% or more and 10% or less when heated from 30°C to 140°C at 10°C/min under the application of tension by TMA. (3) The deformation rate in the longitudinal direction is -2% or more and 0% or less when heated from 30°C to 160°C at 10°C/min and held at 160°C for one minute, before cooled from 160°C to 30°C at 10°C/min under the application of tension by TMA.SELECTED DRAWING: Figure 1
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Inventors:
Shintaro Ishimaru
Masayuki Haruta
Masayuki Haruta
Application Number:
JP2022130563A
Publication Date:
May 30, 2023
Filing Date:
August 18, 2022
Export Citation:
Assignee:
Toyobo Co., Ltd.
International Classes:
B32B27/36; B32B9/00; B32B27/00; B65D65/40
Domestic Patent References:
| JP2017165060A | ||||
| JP2017165059A | ||||
| JP201566800A | ||||
| JP6126917A |
Foreign References:
| WO2018150997A1 |