Title:
SEAMLESS CAN AND COATED METAL PLATE
Document Type and Number:
WIPO Patent Application WO/2023/013614
Kind Code:
A1
Abstract:
The present invention relates to: a seamless can that has an inner-surface coated film having excellent coated-film coatability and corrosion resistance, at least on a can inner-surface; and a coated metal plate with which such a seamless can can be molded. The present invention is characterized in that: the inner-surface coated film contains a polyester resin; the content of aromatic dicarboxylic acid is 70 mol% or greater when the total amount of a polycarboxylic acid component in the polyester resin is 100 mol%; and the gel fraction (A) of the inner-surface coated film expressed by the following equation is less than 90%. (1a): Gel fraction (A) = (W2a/W1a) × 100(%) In the equation, W1a indicates the mass of the inner-surface coated film isolated from a coated metal base cut from the seamless can, and W2a indicates the mass of the isolated inner-surface coated film that has been extracted and dried after being immersed in room-temperature MEK for 60 minutes.
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Inventors:
KASHIWAKURA TAKUYA (JP)
SAKURAGI ARATA (JP)
YAMAMOTO HIROMI (JP)
ZHANG NAN (JP)
SAKURAGI ARATA (JP)
YAMAMOTO HIROMI (JP)
ZHANG NAN (JP)
Application Number:
PCT/JP2022/029567
Publication Date:
February 09, 2023
Filing Date:
August 01, 2022
Export Citation:
Assignee:
TOYO SEIKAN GROUP HOLDINGS LTD (JP)
International Classes:
B65D1/16; B32B15/08; B32B15/09; B65D25/14
Domestic Patent References:
| WO2020100776A1 | 2020-05-22 |
Foreign References:
| JP2017226726A | 2017-12-28 | |||
| JP2006089066A | 2006-04-06 | |||
| JPH01284431A | 1989-11-15 | |||
| JP2010143080A | 2010-07-01 | |||
| JP2003267336A | 2003-09-25 | |||
| JP2004285342A | 2004-10-14 | |||
| JPH03180228A | 1991-08-06 | |||
| JP2001353812A | 2001-12-25 | |||
| JP3872998B2 | 2007-01-24 |
Attorney, Agent or Firm:
ONO, Hisazumi et al. (JP)
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