Method and apparatus for producing a continuous web from a block of material

  • US 6,209,430 B1
  • Filed: 02/22/1999
  • Issued: 04/03/2001
  • Est. Priority Date: 09/29/1997
  • Status: Expired due to Fees
First Claim
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1. A method for forming a continuous web of material from a block of material having a central axis and a first density, the method comprising the steps of:

  • (a) providing the block of material;

    (b) submersing a substantial portion of the block in a liquid disposed in a bath and having a second density, wherein at least a portion of the block is disposed above the liquid in the bath;

    (c) providing a cutting device having a cutting blade which is positioned a predetermined distance from the central axis of the block of material and disposed generally parallel to the central axis;

    (d) rotating the block of material about the central axis;

    (e) linearly advancing the central axis of the block of material a predetermined distance toward the cutting device while rotating the block of material such that the continuous web is produced as the cutting device cuts in a substantially spiral path through the block of material; and

    (f) controlling the predetermined distance between the cutting device and the central axis such that the continuous web cut from the block of material is of substantially uniform thickness.

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