초록 ▼

The present invention utilizes a controlled pressure application system to insure that the proper pressure is applied in a lamination of permeable and semi-permeable roll mounted sheets into a cellular sheet structure. The present invention uses a pressure roller mounted on a carriage which is movab

The present invention utilizes a controlled pressure application system to insure that the proper pressure is applied in a lamination of permeable and semi-permeable roll mounted sheets into a cellular sheet structure. The present invention uses a pressure roller mounted on a carriage which is movable horizontally radially of a heated roll by a controllable linear actuator such that variable and closely controlled pressure may be applied to a web passing between the heated roll and the carriage mounted pressure roller. Additionally, the present invention uses a precisely controllable fluid heated pressure roller and a precisely controllable fluid cooled cooling roller acting as a heat sink for the pressure roller to maintain a precise temperature gradient across the web at the nip. In addition to controlling temperature and pressure on the web, the present invention further controls tension on the web to prevent polymer dissipation, and controls speed of the web such that pressure and temperature dwell time are precisely controlled. Furthermore all of the parameters of operation of the apparatus are electronically recorded for future use.

대표청구항 ▼

A method of manufacturing a refrigerant media from a thermo-formable layer of sheet media and a semi-permeable layer of sheet media to form discrete cells containing a measured quantity of superabsorbent polymer, comprising the steps of: (a) supplying each of said layers from a sheet of such media f

A method of manufacturing a refrigerant media from a thermo-formable layer of sheet media and a semi-permeable layer of sheet media to form discrete cells containing a measured quantity of superabsorbent polymer, comprising the steps of: (a) supplying each of said layers from a sheet of such media formed in a roll such that the supplied sheet is maintained under tension to prevent significant vibration; (b) metering a measured quantity of a selected polymer onto a plurality of discrete locations on an upper surface of said impermeable layer as it is supplied; (c) measuring the speed at which said thermo-formable layer is supplied; (d) aligning said semi-permeable layer atop said thermo-formable layer and said polymer as said layers are supplied; (e) entraining said aligned layers partially about a large diameter heated roller having a pattern of intersecting lands thereon such that a plurality of recesses are defined in alignment with each discrete location of said polymer; (f) controlling the temperature of said heated roller to within a sealing tolerance of said layers by circulating a heated fluid through said heated roller; (g) applying a controlled pressure to said aligned layers while in contact with said heated roller by a pressure roller such that said layers are bonded to one another along said lands; (h) maintaining the temperature of said pressure roller at a constant temperature; and (i) collecting said bonded layers.