Title:
【発明の名称】被覆アルミニウムシームレス缶
Document Type and Number:
Japanese Patent JP3381137
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To increase the joining property of an internal surface organic resin coating to an aluminum base material by a method wherein central line average roughnesses and ten point average roughnesses of respective parts on the internal surface of a container are made specified values, and at the same time, an absorbancy ratio for a specified wave number in an infrared absorbing spectrum is made a specified value or lower. SOLUTION: This can internal surface is kept at a surface roughness which satisfies Ra (B)<=0.5 μm, Ra (W)=(Rz (B)/Ra (B)) based on a ten point average roughness Rz (B) of the can bottom part surface, and a ten point average roughness Rz (F) of the can body neck part directly below surface. In this case, a thermoplastic polyester wherein a ratio Dc =B/A of an absorbancy A of a wave number 793.8 cm<-1> and an absorbancy B of a wave number 848.4 cm<-1> in an infrared absorbing spectrum becomes 0.9 or lower, is used as a coating film.
Inventors:
Kenichiro Nakamaki
Ryo Kobayashi
Wataru Kurokawa
Ikumi Motosu
Katsuhiro Imazu
Ryo Kobayashi
Wataru Kurokawa
Ikumi Motosu
Katsuhiro Imazu
Application Number:
JP25394897A
Publication Date:
February 24, 2003
Filing Date:
September 18, 1997
Export Citation:
Assignee:
Toyo Seikan Co., Ltd.
International Classes:
B65D8/16; B21D22/28; B21D51/26; B32B15/08; B32B15/09; C22C21/06; (IPC1-7): B65D8/16; B21D22/28; B21D51/26; B32B15/08; C22C21/06
Domestic Patent References:
| JP7266496A |
Attorney, Agent or Firm:
Naozumi Ono (1 person outside)