Method and apparatus for manufacturing a purge trap tray
First Claim
Patent Images
1. A method for manufacturing a tray having a purge liquid reservoir comprising:
- providing a support portion comprising a shoulder area and standoff means raised from a sunken reservoir area wherein said shoulder area completely surrounds said reservoir area;
removing a sheet of liquid impermeable thermoplastic material from a larger sheet of said material, said removed sheet having a border area; and
simultaneously perforating said removed sheet while adhering said border area to said shoulder area in a liquid tight manner.
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Accused Products
Abstract
The present invention is directed to a method and apparatus for manufacturing a tray having an integral purge juice trap. A particularly important step in the method is adhering a border area of a perforated thermoplastic sheet to a raised shoulder area of a tray. Preferably, this step is accomplished simultaneously with the step of perforating the thermoplastic sheet. A preferred method for adhering the border area to the shoulder area is heat sealing.
53 Citations
16 Claims
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1. A method for manufacturing a tray having a purge liquid reservoir comprising:
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providing a support portion comprising a shoulder area and standoff means raised from a sunken reservoir area wherein said shoulder area completely surrounds said reservoir area; removing a sheet of liquid impermeable thermoplastic material from a larger sheet of said material, said removed sheet having a border area; and simultaneously perforating said removed sheet while adhering said border area to said shoulder area in a liquid tight manner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for forming a tray having a purge liquid reservoir comprising:
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means adapted to separate a portion of a sheet of thermoplastic material; resiliently mounted transfer block means comprising perforation pin channels and vacuum ports, said block means being adapted to transfer said separated portion to a position where a border area of said separated portion is in substantial contact with a shoulder area of a tray support portion; perforation pin means comprising tips, said perforation pin means being mounted on a crossplate and inserted into said perforation pin channels, whereby, upon depression of said resiliently mounted transfer block means, the tips of said perforation pin means exit said perforation pin channels; and means adapted to adhere aaid border area to said shoulder area. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification