초록 ▼

A lid 1 for a container body 8 having a side wall 7 portion at one end of which an annular portion 9 extends at an obtuse angle to the side wall to define the mouth of the container. The lid has an elastically deformable central panel 2 and a peripheral annular flange 3 which extends downwardly and

A lid 1 for a container body 8 having a side wall 7 portion at one end of which an annular portion 9 extends at an obtuse angle to the side wall to define the mouth of the container. The lid has an elastically deformable central panel 2 and a peripheral annular flange 3 which extends downwardly and outwardly from the central panel to define a seal surface to co-operate with the annular portion 9 of the body. When adhered or fused together the inclined portion of the lid and body receive the stress, arising as a thermal processing increases the volume of product packed, as a load in shear peel force being minimized.

대표청구항 ▼

[ We claim:] [1.] A thermally processable container which is subject to elevated pressures during processing comprising a lid (1, 10, 21, 31, 31A, 52, 55, 71) and a metal container body (8, 13, 28, 40, 70), said metal container body (8, 13, 28, 40, 70) having a side wall portion (7, 14, 29, 50, 64,

[ We claim:] [1.] A thermally processable container which is subject to elevated pressures during processing comprising a lid (1, 10, 21, 31, 31A, 52, 55, 71) and a metal container body (8, 13, 28, 40, 70), said metal container body (8, 13, 28, 40, 70) having a side wall portion (7, 14, 29, 50, 64, 78) from one end of which extends an inclined annular portion (9, 18, 30, 42, 46, 61, 74) defining a mouth of the container body (8, 13, 28, 40, 70),said lid (1, 10, 21, 31, 31A, 52, 55, 71) comprising a generally transversely extending central panel portion (2, 11) surrounded by a downwardly inclined peripheral annular flange (3, 12, 25, 34, 54, 59, 72) which is bonded to said inclined annular portion (9, 18, 30, 42, 46, 61, 74) of the side wall so as to form a seal therewith,said annular flange (3,12, 25, 34, 54, 59, 72) of said lid (1, 10, 21, 31, 31A, 52, 55, 71) being inclined at an angle of between 5.degree. and 85.degree. to the central panel portion (2, 11) in order to cooperate with the inclined annular portion (9, 18, 30, 42, 46, 61, 74) of the side wall;the central panel portion (2, 11) being upwardly deformable during thermal processing and returned to its original shape after thermal processing; andthe upward deformation of said central panel portion (2, 11) during thermal processing effects a 10% increase in volume of the lidded container so as to limit increase in pressure in the container to no more than 5 p.s.i.