초록 ▼

An apparatus and method for forming reclosable packages for food and other items. The package is formed from webs of thermoplastic material and include a separable fastener strip which is reclosable to permit reclosing of the package. Forming, filling, sealing and cutting stations are included for f

An apparatus and method for forming reclosable packages for food and other items. The package is formed from webs of thermoplastic material and include a separable fastener strip which is reclosable to permit reclosing of the package. Forming, filling, sealing and cutting stations are included for forming the package. A heater heats the fastener strip while it is under tension prior to application to the webs to straighten the fastener strip for improved alignment and sealing.

대표청구항 ▼

A method for forming a reclosable package having confronting walls, said method comprising the steps of: providing a web of sheet material from a supply source; providing an extended length of separable fastener strip from a supply source; forming said confronting walls of said reclosable package fr

A method for forming a reclosable package having confronting walls, said method comprising the steps of: providing a web of sheet material from a supply source; providing an extended length of separable fastener strip from a supply source; forming said confronting walls of said reclosable package from said web of sheet material; directing said fastener strip along a linear path of travel toward said confronting walls; tensioning said fastener strip in a linear direction along said path; heating said fastener strip across its entire cross sectional dimension while said tensioning step occurs and before said fastener strip reaches said confronting walls; continuing advancement of said fastener strip in a linear direction; then introducing said fastener strip between the confronting walls; sealing said fastener strip to the confronting walls; and sealing together the confronting walls to form said reclosable package.