Fixation insert with improved flash-through safety and method for manufacturing the same
AssigneeFirma Carl Freudenberg
InventorsJurgen Knoke, Holger Buchwald, Jurgen Fehlhaber
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Abstract
Disclosed herein is a fixation insert having improved resistance to back-riveting (flash-through) and a method for the manufacture thereof, consisting of a planar textile structure of natural and/or synthetic threads and a coating, applied to the front side, of a thermally softenable adhesive compound, where the planar structure has at least on the back side a layer of fibers which extend beyond the surface of the planar structure predominantly perpendicularly, and where the fibers are elastically resilient. The fibers are elastically connected to the threads and are deposited thereon in an electrostatic field.
Claims17
A fixation insert which resists back-riveting when applied by hot-pressing to an outer material, comprising a planar textile structure of natural and/or synthetic threads having coated on a front side thereof a thermally softenable adhesive compound and, on a back side thereof, having a layer of elastically resilient fibers predominantly protruding perpendicularly from the surface of said structure and elastically connected directly to the threads of said structure.
A method for manufacturing a fixation insert which resists back-riveting when applied by hot-pressing to an outer material, comprising the steps of:
- (a) forming a planar structure of natural and/or synthetic threads;
- (b) printing or impregnating an elastic bonding agent onto a back side of said planar structure;
- (c) applying short fibers to said back side of the planar structure in an electrostatic field;
- (d) heating said planar structure to dry and cross-link said bonding agent, thereby cementing together the threads of said planar structure and binding said short fibers to the threads of said planar structure;
- and
- (e) applying an adhesive compound to the front side of said planar structure.
A method for the manufacture of a fixation insert which resists back-riveting when applied by hot-pressing to an outer material, comprising the steps of:
- (a) forming a planar structure of natural and/or synthetic threads;
- (b) simultaneously applying, respectively, to immediately opposed areas of the front and back of said planar structure, a thermally softenable adhesive compound and an elastic bonding agent;
- (c) applying short fibers to the back side of said planar structure in an electrostatic field;
- and
- (d) heating said planar structure so as to dry and cross-link said bonding agent, thereby cementing together the threads of said planar structure and binding said short fibers to the threads of said planar structure.
Dependencies are inferred from the claim text.