CN-122025308-A - Cable surface treatment method and cable

Abstract

The present invention provides a surface treatment method for a cable having a sheath mainly composed of a vinyl chloride resin, which is capable of repairing degradation of the sheath caused by sterilization treatment with a chemical or sterilization treatment with UV-C light and improving resistance to the treatment, and a cable surface-treated by the method. A surface treatment method for a cable (1) is provided with a sheath (10) containing a vinyl chloride resin as a main component, wherein a liquid silicone rubber composition containing a filler (112) that blocks UV-C light is applied to the surface of the sheath (10) and cured, thereby forming a coating layer (11) on the surface of the sheath (10).

Inventors

• KASHIMURA SEIICHI
• Haruki Hideyuki
• Nomasa Xiuga
• An Yatong
• TERAKI NAOTO
• SASAMURA TATSUYA
• SUENAGA KAZUFUMI
• OHNISHI Toshimitsu

Assignees

• 株式会社博迈立铖

Dates

Publication Date

20260512

Application Date

20251104

Priority Date

20241112

Claims (7)

1. 1. A method for treating the surface of a cable comprising a sheath containing a vinyl chloride resin as a main component, characterized by comprising the steps of, A liquid silicone rubber composition containing a filler that blocks UV-C light is applied to the surface of the sheath and cured, thereby forming a coating layer on the surface of the sheath.
2. 2. The method for surface treatment of a cable according to claim 1, wherein, The coating layer comprises a filler which absorbs and/or reflects visible light.
3. 3. The method for surface treatment of a cable according to claim 1 or 2, wherein, The coating layer contains powder for imparting irregularities to the surface thereof.
4. 4. The method for surface treatment of a cable according to claim 1 or 2, wherein, The liquid silicone rubber composition is a condensation-type silicone rubber composition.
5. 5. A cable, comprising: A sheath comprising a vinyl chloride resin as a main component, and And a coating layer which is composed of a liquid silicone rubber composition containing a filler that blocks UV-C light and which coats the sheath.
6. 6. The cable of claim 5, wherein the cable comprises a plurality of conductors, The coating layer comprises a filler which absorbs and/or reflects visible light.
7. 7. The cable according to claim 5 or 6, wherein, The coating layer contains powder for imparting irregularities to the surface thereof.

Description

Cable surface treatment method and cable Technical Field The present invention relates to a surface treatment method for a cable and a cable. Background In recent years, a sheath mainly composed of a vinyl chloride resin is widely used for cables used for medical equipment such as an ultrasonic probe and an endoscope (for example, refer to patent document 1). Prior art literature Patent literature Patent document 1 Japanese patent laid-open No. 63-172756 Disclosure of Invention Problems to be solved by the invention In general, for a sheath of a cable used for medical equipment, sterilization treatment with a drug and sterilization treatment with UV-C light are performed in order to prevent infection. However, in a cable including a sheath containing a vinyl chloride resin as a main component, when the sheath is subjected to the sterilization treatment or the disinfection treatment, deterioration such as discoloration (yellowing) and tackiness (bleeding phenomenon) due to exposure of a plasticizer becomes remarkable. Therefore, even if there is no problem in the function as a cable, the use thereof is sometimes limited due to a sanitary problem or the like. Therefore, in order to repair deterioration of a sheath and to suppress deterioration of the sheath (delay progress of deterioration) in advance, an improvement in resistance to sterilization treatment with a chemical and sterilization treatment with UV-C light is required for a cable having a sheath containing a vinyl chloride resin as a main component. The purpose of the present invention is to provide a surface treatment method for a cable comprising a sheath composed mainly of a vinyl chloride resin, which enables repair of degradation of the sheath due to sterilization treatment with a chemical or sterilization treatment with UV-C light, and which improves resistance to the treatment, and a cable surface-treated by the method. Means for solving the problems The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a surface treatment method for a cable comprising a sheath containing a vinyl chloride resin as a main component, wherein a liquid silicone rubber composition containing a filler for shielding UV-C light is applied to the surface of the sheath and cured, thereby forming a coating layer on the surface of the sheath. The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a cable comprising a sheath composed mainly of a vinyl chloride resin, and a coating layer composed of a liquid silicone rubber composition containing a filler for blocking UV-C light and covering the sheath. The effects of the invention are as follows. According to the present invention, it is possible to provide a surface treatment method for a cable having a sheath mainly composed of a vinyl chloride resin, which can repair deterioration of the sheath due to sterilization treatment with a chemical or sterilization treatment with UV-C light and improve resistance to the treatment, and a cable surface-treated by the method. Drawings Fig. 1 is a cross-sectional view of a cable according to an embodiment of the present invention near a surface layer. Fig. 2 is an external view schematically showing the structure of an ultrasonic probe cable for medical use using the cable according to the embodiment of the present invention. Fig. 3 (a) is a radial cross-sectional view of the cable of the ultrasonic probe cable. Fig. 3 (b) is a radial sectional view of the ultrasonic probe cable taken along the section line A-A shown in fig. 2. Fig. 4 (a) is a radial cross-sectional view of the cable before surface treatment. Fig. 4 (b) is a radial sectional view of an ultrasonic probe cable having a cable before surface treatment. Fig. 5 is a photograph showing an appearance of a cable in which a coating layer is formed by subjecting a part of a deteriorated sheath to a surface treatment. Symbol description 1-Cable, 10-sheath, 11-coating, 111-base material, 112-filler, 113-powder. Detailed Description The surface treatment method of the cable according to the embodiment of the present invention is a surface treatment method of a cable having a sheath containing a vinyl chloride resin as a main component, wherein a liquid silicone rubber composition is applied to the surface of the sheath and cured, thereby forming a coating layer on the surface of the sheath. Hereinafter, a structure of a cable subjected to surface treatment by the surface treatment method of a cable according to an embodiment of the present invention and a specific example of the surface treatment method of a cable will be described. (Structure of Cable) Fig. 1 is an enlarged cross-sectional view of the vicinity of the surface layer of a cable 1 according to an embodiment of the present invention. Fig. 1 shows a cross section of a sheath 10 mainly composed of a vinyl chloride resin of