Vacuum roll system for forming and applying handle on a substrate

作者: Jorge A. Nash

DOI:

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摘要: A system (10) comprising: a vacuum roll (25) configured to receive material (11), wherein the defines peripheral surface (65) having contoured portion (59); and an element (26) forming nip (76) with so that (11) can be applied substrate (12) advancing through (76).

参考文章(3)
Vincent E Heywood, Manufacture of window envelopes ,(1956)