FIELD: welding equipment. SUBSTANCE: guide channel is made from an extrusion saturated polyester with a melt flow index equal to 0.1-10 g/10 min. Saturated polyesters of solid phase polycondensation and/or modified saturated polyesters are used as the extrusion saturated polyester. The extrusion saturated polyester with melt flow index equal to 1,0-5.0 g/10 min is preferable. EFFECT: improved service life, reduced motion drag and channel weight, improved channel stiffness. 3 cl
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Authors
Dates
1994-06-15—Published
1991-12-28—Filed