Appeal No. 1998-3018 Application 08/457,328 rejections.4 DISCUSSION Beck, the examiner’s primary reference, discloses a multi-layer headbox for a paper making machine. The headbox 10 includes a plurality of stock receiving chambers 13, 14 and 15, turbulence generators 46, 47 and 48, tube-type stock distributors 49, 50 and 51 and slice openings 20, 24 and 29, these elements being arranged as shown in Figure 1. Beck states that [t]he stock receiving chambers 13, 14 and 15 may be supplied from a common stock delivery and control system, or from a plurality of separate stock delivery and control systems, as indicated by reference numerals 56, 57 and 58. By utilizing separate stock delivery and control systems, the stock applied to the distinct stock delivery chambers may be of different quality or character to enable the headbox to form paper sheets having specific qualities. For example, the stock receiving chambers 13 and 15 may receive a stock slurry containing fillers and clays, while the stock receiving chamber 14 receives a stock slurry which contains strength fibers and chemicals. Additionally, different colored stocks may be 4The unpublished technical article appended to the main brief and discussed on page 5 thereof has not been properly authenticated and has no apparent relevance to the specific issues raised in this appeal. Accordingly, we have considered the article only to the extent that it embodies general background information relating to the field of the invention. -5-Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 NextLast modified: November 3, 2007