초록

Apparatus for securing extruded flexible fasteners to thin plastic film by adhesive, attaining high speed production and permitting diverse materials which might not be compatible for fusion bonding to be used in the fasteners and the films, respectively.

대표청구항 ▼

Apparatus for attaching to a prefabricated flexible web a first prefabricated flexible separable fastener strip having an interlocking profile projecting away from an interface surface area of the strip and the profile being adapted for interlocking with a complementary second flexible separable fas

Apparatus for attaching to a prefabricated flexible web a first prefabricated flexible separable fastener strip having an interlocking profile projecting away from an interface surface area of the strip and the profile being adapted for interlocking with a complementary second flexible separable fastener profile, comprising: means for guiding the web and the fastener strip travelling at high speed and substantially continuously convergently toward one another to join the interface surface area of the fastener strip to an interface surface area of said web; said guiding means having a formation utilizing said profile as guide means for guiding the fastener strip in movement into said convergence with the web; means for substantially continuously applying a thin layer of quickly tacky adhesive to at least one of said interface surface areas and as close as practicable to the convergent joining of the web and strip so that the adhesive will reach the joining while tacky; and said guiding means pressing said strip and said web together and thereby effecting attachment of the interface surface areas to one another by means of the adhesive layer while the web and fastener strip continue travelling jointly at said high speed.