A - Human Necessities – 44 – B
Patent
A - Human Necessities
44
B
A44B 18/00 (2006.01)
Patent
CA 2292694
There is provided a method of capping mechanical fasteners from a web having an array of upstanding stems. A heated surface member is positioned opposite a support forming a nip into which the web is fed. The heated surface member has a series of laterally spaced elongated peak and valley structures such that more than one peak and valley structure contacts and deforms each stem structure. The peak and valley groove structures provided asymmetric elongation and deformation of top portion of the stem structures forming hook heads.
La présente invention concerne un procédé de coiffage d'éléments de fixation mécaniques disposés sur une bande continue comportant un alignement matriciel de tiges droites, et un élément à surface chauffée placé face à un support formant un point de contact entre cylindres, entre lesquels la bande est amenée à avancer. L'élément à surface chauffée présente une série de structures creuses et saillantes allongées, latéralement espacées, conçues pour que plus d'une structure creuse et saillante entre en contact avec chacune des structures à tiges droites et la déforme. Les structures à nervures creuses et saillantes produisent un allongement et une déformation asymétriques de la partie supérieure des structures à tiges droites formant des têtes de crochets.
Kampfer Robert D.
Miller Philip
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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