Paper making and fiber liberation – Apparatus – Foraminous forming mold for discrete articles
Patent
1997-07-21
2000-04-11
Lamb, Brenda A.
Paper making and fiber liberation
Apparatus
Foraminous forming mold for discrete articles
425 85, D21J 300
Patent
active
060484403
ABSTRACT:
An improved flexible manufacturing process for making molded fiber products uses a molding machine provided with a large number of ports for mounting a variety of molds. Quick release mold attachments permit rapid changeover of production output. The molds used are designed to have a predetermined total height, and platen stops maintain this design separation during transfer of the molded product. An expanded stock chest is provided to permit a higher pulp usage rate. Separate positive air supply lines are provided for the different transfer mold sites. Using these separate lines, a novel air volume and flow control method is provided to control the volume of air applied to release products from transfer molds, permitting manufacture of a variety of complex structures. The air flow controls permit control of both the rate of flow and the duration of the selected rate of flow of positive pressure air, thus providing total volume control. A variable height conveyor is provided to receive molded structures and products dropped from the transfer molds of the upper platen to accommodate a variety of widths and depths of products in a particular run. Separate control of drying air flow in a multiple stage air dryer is provided to permit adjustment of the drying process to accommodate a variety of molded product configurations.
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Tomilinson Group Information; Brochures which disclose Tomlison emery pulp moulding machines of general type modified in the present invention.
Closing In On Alternative To Polystyrene Packaging, Portland Press Herald, Tuesday, Apr. 30, 1991, article discussing the present invention.
Maine Company Cushions Products In Moulded Pulp, Packaging, Jul. 19th Article discussing the present invention.
Lamb Brenda A.
Moulded Fibre Technology, Inc.
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