초록 ▼

A zipper guide and spreader device for form, fill and seal apparatus comprises a package material guiding and spreading mechanism wherein a pair of articulated members have zipper guideways. The members are hingedly connected together and one of the members is hingedly connected to a fixed support.

A zipper guide and spreader device for form, fill and seal apparatus comprises a package material guiding and spreading mechanism wherein a pair of articulated members have zipper guideways. The members are hingedly connected together and one of the members is hingedly connected to a fixed support. An actuator operates the articulated members from a biased relaxed position into an articulated material-spreading position wherein the material is spread for eliminating wrinkles before edge sealing across the material below the discharge end of the forming and filling tube.

대표청구항 ▼

In form, fill and seal apparatus wherein package making material slidably wrapped about a forming and filling tube has a longitudinal zipper closure and is advanced by package width increments along and then below the package filling discharge end of the tube: a package material guiding and spreadin

In form, fill and seal apparatus wherein package making material slidably wrapped about a forming and filling tube has a longitudinal zipper closure and is advanced by package width increments along and then below the package filling discharge end of the tube: a package material guiding and spreading device comprising a pair of articulated members having zipper guideways; and means for actuating said members between an aligned guideway relation wherein the zipper can run freely thru the aligned guideways during advancement of the material, and an articulated material spreading position wherein the material is spread for eliminating wrinkles before edge sealing across the material below the discharge end of the forming and filling tube.