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Apparatus for making paperboard pressware with controlled blank feed

  • US 8,414,464 B2
  • Filed: 09/16/2010
  • Issued: 04/09/2013
  • Est. Priority Date: 02/20/2004
  • Status: Active Grant
First Claim
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1. An improved pressing apparatus for making paperboard pressware comprising:

  • (a) a pressware die set including a punch and a die;

    (b) a forming ram upon which the punch is mounted, the forming ram being adapted for reciprocating motion;

    (c) the die mounted in an opposed facing relationship with the forming ram;

    (d) paperboard blank feeder adapted to provide paperboard blanks to the die,the pressing apparatus wherein the forming ram reciprocally drives the punch to the die with a paperboard blank therebetween in order to form the pressware and another blank is fed to the die along a blank feed path upon ejection of the formed product;

    the apparatus being further provided with;

    (e) a pneumatic product ejector mounted on the forming ram adapted to output an ejector air stream incident upon formed product in order to facilitate removal of formed product from the die set, the product ejector being disposed such that its output air stream is above and substantially parallel to the feed path and avoids the feed path of the blanks fed to the apparatus and such that the output air stream is adapted to be active while another blank enters a region between the punch and die.

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