| 摘要 |
In the paper forming art an arrangement of a stock slurry inlet and a belt of drainage fabric; the drainage fabric has liquid impermeable bands positioned inwardly of its side edges and the inlet discharges the stock slurry onto the fabric including the bands. The effect of the bands is to terminate the formed paper web sidewardly along the inner edges of the bands and to provide edges of the sheet which need not be trimmed. The arrangement has particular utility where sheet formation is between two fabrics and there is little room for positioning the usual flow restricting shoes, and is advantageous also in providing for uniform basis weight across the sheet width. The liquid impermeable bands may be one-fourth to three-eighths inches in width and the side edges may be 1 to 2 inches in width.
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