Retention means for container closure assembly

In a hand operable easy opening closure system of the type wherein a flexible exterior tape and interior sheet material are employed to removably seal a preformed opening in an end portion of a container, the improvement comprising a non-metallic flexible film having a first end portion and a second end portion, said film having a plurality of non-metallic flexible yarns thereon, the total Denier of said yarns falling in the range of about 1000 to about 8,000, said first end portion being bonded to the underside of said container end portion and said second end portion is bonded to said exterior tape and to said interior sheet material.

An end portion for a container, said end portion being of the type having a closure system thereon comprising an exterior tape removably secured to the top of said end portion over a pour hole, wherein the improvement comprises means for restricting separation of said closure system from said end portion comprising a non-metallic, tough, shear-resistant, flexible film having a first end portion and a second end portion, wherein said first end portion is bonded to the underside of said container end portion and said second end portion is bonded to the underside of said tape in the area of said pour hole.