D - Textiles – Paper – 04 – B
Patent
D - Textiles, Paper
04
B
D04B 21/20 (2006.01) D04B 1/22 (2006.01) D04C 1/12 (2006.01) F16J 15/22 (2006.01) F16J 15/24 (2006.01)
Patent
CA 2628088
A yarn mainly configured by expanded graphite is improved to be so highly flexible that the expanded graphite does not protrude in a usual bending process, in order to prevent partial missing of the expanded graphite from occurring when the yarn is twisted or braided to produce a gland packing. A yarn 1 for a gland packing is formed by filling the interior of a tubular member 3 configured by knitting or braiding an inconel wire 2 having a diameter of 0.1 mm, with fibrous expanded graphite 4 having a section in which an aspect ratio is set to 1 to 5, the aspect ratio being a value obtained by dividing the width w by the thickness t.
Filasse de graphite exfolié comme matériau de base amélioré de façon à présenter une souplesse enrichie exempte de protubérance de graphite exfolié lors d~un traitement de cintrage ordinaire, évitant ainsi toute perte partielle de graphite exfolié lors d~une opération de torsion ou de torsade pour élaborer une presse-étoupe. On obtient une filasse (1) pour presse-étoupe en remplissant l~intérieur d~un élément tubulaire (3) par tricotage ou pliage de fil Inconel (2) de diamètre de 0,1 mm avec graphite exfolié fibreux (4) sous forme de fibre d~une section transversale définie pour présenter un rapport d'allongement, correspondant au quotient de la largeur (w) divisée par l~épaisseur (t), de 1 à 5.
Fetherstonhaugh & Co.
Nippon Pillar Packing Co. Ltd.
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