Method for jacketing strandlike elements

Patent metadata

Field	Value
Publication number	US-12347586-B2
Application number	US-202218066440-A
Country	US
Kind code	B2
Filing date	Dec 15, 2022
Priority date	Dec 16, 2021
Publication date	Jul 1, 2025
Grant date	Jul 1, 2025

Abstract

The invention relates to a method for jacketing strandlike elements ( 10 ), comprising the method steps of: a) producing or providing a strandlike element ( 10 ), b) wrapping the strandlike element ( 10 ) with an adhesive tape ( 12 ) to give a wrapped strand ( 14 ), the adhesive tape ( 12 ) comprising as curable adhesive a radiation-curing and/or thermally curing adhesive, c) arranging the wrapped strand ( 14 ) in one or more holding elements ( 16 ) of a holding arrangement ( 18 ) to establish a predetermined shape and to give a shaped strand ( 20 ), and d) curing the curable adhesive in the shaped strand ( 20 ) by irradiating the adhesive tape ( 12 ) with electromagnetic radiation of a wavelength λ, to give a jacketed strand ( 22 ), wherein the one or the two or more holding elements ( 16 ) at least in sections are at least partly transmissive for electromagnetic radiation of wavelength λ, wherein the irradiation of the adhesive tape ( 12 ) with the electromagnetic radiation of wavelength λ takes place at least partly through the one or the two or more holding elements ( 16 ).

First claim

The invention claimed is:

1. A method of jacketing strandlike elements, comprising the method steps of:
a) producing or providing a strandlike element,
b) wrapping the strandlike element with an adhesive tape to give a wrapped strand, the adhesive tape comprising as curable adhesive a radiation-curing and/or a thermally curing adhesive which may also be a pressure-sensitive adhesive,
c) arranging the wrapped strand in one or more holding elements of a holding arrangement to establish a predetermined shape and to give a shaped strand, and wherein the wrapped strand is covered, and may also be secured, at least in sections or completely, by one or more covering elements, the one or more covering elements at least in sections being at least partly transmissive for electromagnetic radiation of wavelength λ, the irradiation of adhesive tape with the electromagnetic radiation of wavelength λ taking place at least partly through the one or more covering elements, and,
d) curing the curable adhesive in the shaped strand by irradiating the adhesive tape with electromagnetic radiation of a wavelength λ, to give a jacketed strand,
wherein the one or more holding elements at least in sections are at least partly transmissive for electromagnetic radiation of wavelength λ,
wherein the irradiation of the adhesive tape with the electromagnetic radiation of wavelength λ takes place at least partly through the one or more holding elements.

2. The method of claim 1 , wherein the adhesive tape comprises as the curable adhesive the radiation-curing adhesive, wherein the radiation-curing adhesive is a UV-curable adhesive, curable by irradiation with electromagnetic radiation having a wavelength in the range from 10 to 380 nm.

3. The method of claim 2 , wherein the UV-curable adhesive, curable by irradiation with electromagnetic radiation having a wavelength in the range from 200 nm to 380 nm.

4. The method of claim 1 , wherein the adhesive tape comprises a carrier, the curable adhesive being arranged at least partly on the surface of the carrier.

5. The method of claim 4 , wherein the carrier at least in sections comprises a carrier material which is at least partly, transmissive for electromagnetic radiation of wavelength λ.

6. The method of claim 1 , wherein the adhesive tape comprises a carrier and the curable adhesive coated on the carrier and in the form of the radiation-curing and/or thermally curing adhesive which is applied over the full area and which at the same time is pressure-sensitively adhesive.

7. The method of claim 1 , wherein the two or more holding elements are receiving regions, provided for receiving the wrapped strand, the holding arrangement further comprises one or more carrier elements, wherein the one or more holding elements and/or the carrier elements being connected reversibly and non-destructively partably to the holding arrangement.

8. The method of claim 1 , wherein the one or more holding elements over the entire length are at least partly transmissive for electromagnetic radiation of wavelength λ.

9. The method of claim 1 , wherein the one or more holding elements at least in sections are transmissive to an extent of 30% or more, for electromagnetic radiation of wavelength λ, based on the ratio of the total intensity of the electromagnetic radiation of wavelength λ irradiated onto the one or more holding elements to the total intensity of the electromagnetic radiation of wavelength λ passing through the one or more holding elements.

10. The method of claim 1 , wherein the one or more holding elements are formed at least in sections, of a material which is at least partly transmissive for electromagnetic radiation of wavelength λ.

11. The method of claim 10 , wherein the material has an absorption coefficient a for electromagnetic radiation of wavelength λ of 1.0 1/cm or less.

12. The method of claim 11 , wherein the material has an absorption coefficient a for electromagnetic radiation of wavelength λ of 0.7 1/cm or less.

13. The method of claim 1 , wherein the wrapped strand is arranged in the one or more holding elements such that more than 30%, of the wrapped strand is arranged in the one or the OF more holding elements, based on the length of the wrapped strand or on the length of that part of the shaped strand that is irradiated with electromagnetic radiation.

14. The method of claim 1 , wherein the curable adhesive is cured with a radiation device, the radiation device being configured to surround the shaped strand at least partly, and to irradiate the shaped strand with electromagnetic radiation of wavelength λ at least in sections over 70% or more, of its extent.

15. The method of claim 14 , wherein the radiation device is a UV lamp and/or an IR lamp.

16. The method of claim 1 , wherein the curing in method step d) before the irradiation comprises a preheating of the shaped strand at a temperature T 1 in the range from 20 to 60° C., and/or wherein the curing in method step d) takes place by irradiation at a temperature T 2 in the range from 20 to 90° C., and/or wherein the curing in method step d) after the irradiation comprises an after curing at a temperature T 3 in the range from 60 to 150° C.

17. A holding arrangement which establishes a predetermined shape of a shaped strand in a method according to claim 1 , comprising one or more holding elements for receiving the wrapped strand, wherein the one or more holding elements are receiving regions, provided for receiving the wrapped strand, at least in sections are at least partly transmissive for electromagnetic radiation of wavelength λ, wherein the one or more holding elements are part of one or more carrier elements of the holding arrangement, the one or more holding elements and/or carrier elements being connected reversibly and non-destructively partably to the holding arrangement.

18. A system implementing the method according to claim 1 , comprising a holding arrangement which establishes a predetermined shape of a shape strand of the method, the holding arrangement comprising one or more holding elements which are receiving regions for receiving the wrapped strand, wherein the one or more holding elements at least in sections are at least partly transmissive for electromagnetic radiation of wavelength λ, wherein the one or more holding elements are part of one or more carrier elements of the holding arrangement, the one or more holding elements and/or carrier elements being connected reversibly and non-destructively partably to the holding arrangement,
and a radiation device being configured to at least partly surround the shaped strand and to irradiate the shaped strand with electromagnetic radiation of wavelength λ at least in sections over 70% or more of its extent.

Assignees

• Tesa Se

Inventors

• Wienzek Tristan
• Macketanz Lars
• Guldbrandsen Lars
• Pennekamp Jan-Gerd
• Gerdsmann Thomas
• Richter Gerhard

Classifications

• H01B13/0271

  Alternate stranding processes · CPC title

• H01B13/0207

  Details; Auxiliary devices · CPC title

• B29C2035/0827

  using UV radiation · CPC title

• B29C35/0888

  using transparant moulds · CPC title

• C09J2301/302

  the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C · CPC title