초록 ▼

A closure strip (1) which incorporates a profiled closure element for use in resealable or reclosable bags is provided with a channel (4) in its surface which contacts a bag forming substrate material (6) for receiving adhesive (5). The presence of the channel ensures that a suitable thickness of ad

A closure strip (1) which incorporates a profiled closure element for use in resealable or reclosable bags is provided with a channel (4) in its surface which contacts a bag forming substrate material (6) for receiving adhesive (5). The presence of the channel ensures that a suitable thickness of adhesive is present at the time of bonding of the closure strip to the substrate. The invention also provides a method of making bag forming material by use of such a closure strip.

대표청구항 ▼

Material for making a reclosable bag, and including a thin sheet-like substrate material and a plastic closure strip having closure profile means projecting oppositely to a base surface having opposite longitudinal edges and adapted to be adhesively secured to the substrate, the improvement comprisi

Material for making a reclosable bag, and including a thin sheet-like substrate material and a plastic closure strip having closure profile means projecting oppositely to a base surface having opposite longitudinal edges and adapted to be adhesively secured to the substrate, the improvement comprising: adhesive means between said base surface and said substrate for securing said base surface to the substrate; and spacer means along said edges extending between said base surface and said substrate, said spacer means being separated by a longitudinal area of said base surface located between said spacer means, said base surface having many times the width of said spacer means, and said base surface being inset relative to said spacer means for assuring a substantial thickness of the adhesive between said base surface and said substrate.