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TAPPI T455 sp-04

M00011419

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TAPPI T455 sp-04 Identification of Wire Side of Paper

standard by Technical Association of the Pulp and Paper Industry, 11/09/2004

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This method describes procedures for identifying the wire side of paper made on a fourdrinier paper machine with a single wire or forming fabric.It is not always possible to identify the sides, particularly with coated and other surface-treated papers, papers made with certain multiply papers made from well-beaten rag stock, and specialties made with some variation from usual papermaking practices. Nevertheless, if any one of the following procedures gives a clear result, identification is established.These procedures are not applicable to paper made on cylinder, twin-wire, or other special machines.