Adhesive tape with textile carrier for cable bandaging
View Patent ↗An adhesive tape having a carrier and an adhesive layer applied to at least one side of the carrier, wherein the carrier is a thread-stitched web nonwoven carrier produced from a preconsolidated base web of staple fibers. Mutually parallel threads are stitched into the base web to form the final thread-stitched web nonwoven carrier, wherein the ultimate tensile strength of the preconsolidated but not as yet overstitched base web is less than 2 N/cm. In embodiments, the ultimate tensile strength of the preconsolidated but not as yet overstitched base web is below 1 N/cm or below 0.5 N/cm.
1. An adhesive tape consisting of a carrier and an adhesive layer applied to at least one side of the carrier, wherein the carrier is a final thread-stitched web nonwoven carrier produced from a base web of staple fibres that is preconsolidated, before overstitching with stitching threads, by needling to produce a preconsolidated base web, wherein mutually parallel stitching threads are stitched into the preconsolidated base web to form the final thread-stitched web nonwoven carrier, wherein the ultimate tensile strength of the preconsolidated, but not as yet overstitched, base web is less than 1 N/cm, wherein an angle made by at least 50% of the staple fibres relative to an axis extending in a transverse direction of the base web is between 5° and 45°.
2. The adhesive tape according to claim 1 , wherein the ultimate tensile strength of the preconsolidated, but not as yet overstitched base web, is below 0.5 N/cm.
3. The adhesive tape according to claim 1 , wherein the base web consists of polyester, polypropylene, polyethylene or polyamide fibres.
4. The adhesive tape according to claim 1 , wherein the stitching threads consist of polyester, polypropylene, polyethylene or polyamide.
5. The adhesive tape according to claim 1 , wherein the stitching threads form a parallel arrangement in the machine direction.
6. The adhesive tape according to claim 1 , wherein the basis weight of the final thread-stitched web nonwoven carrier is between 30 g/m 2 and 180 g/m 2 .
7. The adhesive tape according to claim 1 , wherein a material of the base web is compacted by calendering.
8. The adhesive tape according to claim 1 , wherein the needling is present in a range from 1 needle/cm 2 of the base web to 50 needles/cm 2 of the base web.
9. The adhesive tape according to claim 1 , wherein the adhesive is based on natural rubber, synthetic rubber, acrylate or silicone.
10. The adhesive tape according to claim 1 , wherein the adhesive comprises an acrylate pressure-sensitive hotmelt adhesive.
11. The adhesive tape according to claim 1 , wherein the angle made by at least 50% of the staple fibres relative to the axis extending in the transverse direction of the web is between 15° and 30°.
12. The adhesive tape according to claim 1 , wherein a proportion of staple fibres forming an angle between 5° and 45° relative to an axis extending in the cross direction of the web is above 80%.
13. The adhesive tape according to claim 12 , wherein the proportion of staple fibres forming an angle between 5° and 45° relative to the axis extending in the cross direction of the web is above 95%.
14. The adhesive tape according to claim 1 , wherein a number of overstitching threads is below 30 threads/25 mm width of carrier.
15. The adhesive tape according to claim 14 , wherein a number of stitching threads is between 10 to 24 threads/25 mm width of the carrier.
16. The adhesive tape according to claim 1 , wherein the adhesive is applied, in a form of at least one adhesive stripe, to the carrier in the longitudinal direction of the adhesive tape, wherein the at least one adhesive stripe has a width less than a width of the carrier.
17. The adhesive tape according to claim 16 , wherein the width of the at least one adhesive stripe is 10 to 80% of the width of the carrier, and further wherein the at least one adhesive stripe is located at one edge of the carrier.
18. A method for jacketing elongate material, the method comprising:
passing the adhesive tape according to claim 1 around an elongate material in a helical line.
19. A method for jacketing elongate material, the method comprising:
enveloping an elongate material with the tape according to claim 1 in an axial direction.
20. A thread-stitched web nonwoven carrier produced from a base web of staple fibres that is preconsolidated, before overstitching with stitching threads, by needling to produce a preconsolidated base web, wherein mutually parallel stitching threads are stitched into the preconsolidated base web to form the thread-stitched web nonwoven carrier, wherein the ultimate tensile strength of the preconsolidated, but not as yet overstitched, base web is less than 1 N/cm, wherein an angle made by at least 50% of the staple fibres relative to an axis extending in a transverse direction of the base web is between 5° and 45°.