Title:
HEAT-SEAL LID AND CAN
Document Type and Number:
WIPO Patent Application WO/2019/112051
Kind Code:
A1
Abstract:
This heat-seal lid is provided with: a resin-laminated aluminum foil; and a first seaming-side rim part and a second seaming-side rim part made of a resin film-laminated metal plate. The resin film-laminated metal plate is provided with a metal plate, a lamination film formed on one surface of the metal plate, and a second resin film containing a thermoplastic polyester resin and being formed on the other surface of the metal plate. The lamination film is provided with an adhesive layer which contains a polypropylene-based resin and a polyethylene-based resin and an underlayer which contains a modified polypropylene-based resin, wherein the content of the polypropylene-based resin in the adhesive layer is 1.0 mass% to 45.0 mass% of the resins in the adhesive layer, the melting point of the second resin film is higher by 40˚C or more than the melting point of the adhesive layer and is also higher than a heating temperature of a heat-seal tool, the thickness of the adhesive layer is 1.0 µm to 15.0 µm, and the thickness of the underlayer is 1.0 µm to 18.0 µm.
Inventors:
KADOWAKI NOBUO (JP)
IWAKIRI KAZUSHI (JP)
MIZUTANI TOMOHIRO (JP)
KATO SATOSHI (JP)
IWAKIRI KAZUSHI (JP)
MIZUTANI TOMOHIRO (JP)
KATO SATOSHI (JP)
Application Number:
PCT/JP2018/045134
Publication Date:
June 13, 2019
Filing Date:
December 07, 2018
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
B65D77/20; B32B15/085; B32B15/09; B65D17/28
Foreign References:
| JPH04104435U | 1992-09-09 | |||
| JPH0487963A | 1992-03-19 | |||
| JPH10305871A | 1998-11-17 | |||
| US6302321B1 | 2001-10-16 | |||
| JP2017234894A | 2017-12-07 | |||
| JPH10305871A | 1998-11-17 |
Other References:
See also references of EP 3722226A4
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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