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TAPPI T 516 cm-11
- Envelope Seal, Seam, and Window Patch Testing
- standard by Technical Association of the Pulp and Paper Industry, 01/01/2011
- Publisher: TAPPI
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This method describes procedures for evaluating the following properties of envelopes: (1) film thickness of seal,(2) seal, seam, and window patch adhesion, (3) humidity resistance, (4) discoloration and staining of seal, seams, andpatch.