| 摘要 |
PROBLEM TO BE SOLVED: To form an opening by grasping and pulling the tab part of a lid, by forming at the perimetrical edges of the lid two unsealing ends with the tab part therebetween and also forming an unsealing means extending inside from the unsealing ends. SOLUTION: An unsealing means having two unsealing ends 2a and 2b formed at perimetrical edges, using an area between the unsealing ends 2a and 2b as a tab part 3, and comprising perforations 2 with an intermittent inseparable part in the form of a loop connecting the unsealing ends 2a and 2b is formed near and along the inner edge of a heat bond area 5' serving as a heat bond part which is annularly formed when a lid is heat bonded to a container. In a base layer 11, the perforations 2 are made through the base 11 and are covered with a bonding layer 12, an aluminum foil layer 13 and a heat bondable resin layer 14. Because the adhesive layer 12, aluminum foil layer 13 and heat bondable resin layer 14 covering the perforations 2 are each relatively thin and made of a easy-to-tear material, the lid 1 can be easily cut off along the perforations 2. |
