초록 ▼

An apparatus for cutting and heat sealing a pair of overlying heat-sealable panels together comprises a conveyer for moving a pair of superimposed webs of panel material along a linear path and into a cutting and sealing station. A combined cutting and sealing die assembly includes a cutting die for

An apparatus for cutting and heat sealing a pair of overlying heat-sealable panels together comprises a conveyer for moving a pair of superimposed webs of panel material along a linear path and into a cutting and sealing station. A combined cutting and sealing die assembly includes a cutting die for cutting the panels out of the webs and a sealing die for sealing peripheral edges of the superimposed panels together. A heater element is mounted on each of the dies to heat them to their respective cutting and sealing temperatures with the dies being thermally insulated to prevent heat transfer therebetween. A plurality of spring clips attach the dies together to permit thermal expansion of the cutting die relative to the sealing die.

대표청구항 ▼

In an apparatus for forming an article out of a pair of superimposed heat-sealable panels comprising conveyor means for moving a pair of superimposed webs along a path, and a cutting and sealing station positioned adjacent to said path for receiving said webs, said cutting and sealing station compri

In an apparatus for forming an article out of a pair of superimposed heat-sealable panels comprising conveyor means for moving a pair of superimposed webs along a path, and a cutting and sealing station positioned adjacent to said path for receiving said webs, said cutting and sealing station comprising cutting means, including a cutting die, for simultaneously cutting said webs at a predetermined cutting temperature to form said panels, sealing means, including a sealing die, for sealing said panels together at a predetermined sealing temperature, less than said cutting temperature, retaining means for attaching said cutting means to said sealing means and for permitting thermal expansion and movement of said cutting die, relative to said sealing die, and first insulation means for mounting said cutting die on said sealing die and for thermally insulating said cutting die from said sealing die.