| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lid material which is intended for sealing a container and includes a sealing material capable of being easily peeled off when being opened. <P>SOLUTION: The lid material 6 includes: an inner plug 2 which is attached to a mouth part end 41 of a container body 4, and includes a high-density polyethylene resin layer 21 on a surface 21a on its one side; and the sealing material 1 which has a propylene-ethylene copolymer resin layer 14 including 2-8 mass% of ethylene on a surface in contact with the surface 21a on one side of the inner plug 2. The propylene-ethylene copolymer resin and the high-density polyethylene resin are set to be the same in melting temperature, or the melting temperature of the propylene-ethylene copolymer resin is set to be higher than that of the high-density polyethylene resin under the condition that a difference between the melting temperatures is 17°C or less. The sealing material 1 has a metal foil layer 12 on the opposite side of the surface in contact with the high-density polyethylene resin layer 21. The high-density polyethylene resin layer 21 of the inner plug 2 is welded and pasted to the propylene-ethylene copolymer resin layer 14 of the sealing material 1 by high frequency induction heating. <P>COPYRIGHT: (C)2010,JPO&INPIT |
