Rope with spiral teeth

Abstract

A rope with spiral teeth includes a first rope including a first core material with a first resin covering the first core material and a second rope including a second core material with a second resin covering the second core material. The second rope is spirally wound around an outer circumferential surface of the first rope. At least one of the first resin and the second resin contains an infrared reflectance adjusting material to make a temperature rise characteristic of the first resin and a temperature rise characteristic of the second resin different from each other, and the first rope and the second rope are bonded together, preferably without adhesive.

1 . A rope with spiral teeth, comprising:
 a first rope including
 a first core material, and 
 a first resin covering the first core material; and 
   a second rope that is spirally wound around an outer circumferential surface of the first rope, the second rope including
 a second core material, and 
 a second resin covering the second core material, wherein
 at least one of the first resin and the second resin contains an infrared reflectance adjusting material to make a temperature rise characteristic of the first resin and a temperature rise characteristic of the second resin different from each other, and 
 
   the first rope and the second rope are bonded together.   
     
     
         2 . The rope with spiral teeth according to  claim 1 , wherein
 the first resin contains an infrared reflectance adjusting material A as the infrared reflectance adjusting material,   the second resin contains an infrared reflectance adjusting material B as the infrared reflectance adjusting material, and   an infrared reflectance of the infrared reflectance adjusting material A and an infrared reflectance of the infrared reflectance adjusting material B differ from each other.   
     
     
         3 . The rope with spiral teeth according to  claim 2 , wherein
 the infrared reflectance of the infrared reflectance adjusting material B is higher than the infrared reflectance of the infrared reflectance adjusting material A.   
     
     
         4 . The rope with spiral teeth according to  claim 1 , wherein
 the infrared reflectance adjusting material comprises at least one pigment selected from the group consisting of a composite oxide pigment, a titanium oxide pigment and a carbon black pigment.   
     
     
         5 . The rope with spiral teeth according to  claim 1 , wherein
 the first resin and the second resin are the same.   
     
     
         6 . The rope with spiral teeth according to  claim 1 , wherein
 the first resin and the second resin are a thermoplastic resin.   
     
     
         7 . The rope with spiral teeth according to  claim 6 , wherein
 the first resin and the second resin comprise at least one resin material selected from the group consisting of a polyester resin, a polyamide resin, a polyurethane resin, a fluorine resin and a polyolefin resin.   
     
     
         8 . The rope with spiral teeth according to  claim 7 , wherein
 the first resin and the second resin comprise at least one resin material selected from the group consisting of a polyester elastomer, a polyamide elastomer and a polyurethane elastomer.   
     
     
         9 . The rope with spiral teeth according to  claim 3 , wherein
 the infrared reflectance adjusting material A comprises a titanium oxide pigment, and   the infrared reflectance adjusting material B comprises a composite oxide pigment.   
     
     
         10 . The rope with spiral teeth according to  claim 9 , wherein
 the first resin and the second resin are a polyester elastomer.   
     
     
         11 . The rope with spiral teeth according to  claim 1 , wherein
 the second rope forms a spiral protrusion that is engageable with a gear.   
     
     
         12 . The rope with spiral teeth according to  claim 1 , wherein
 at least one of the first rope and the second rope is shaped as a rod with a circular cross section.   
     
     
         13 . The rope with spiral teeth according to  claim 1 , wherein
 the first core material is a wire rope having a plurality of side strands wound around an outer circumferential surface of a single core strand.   
     
     
         14 . The rope with spiral teeth according to  claim 1 , wherein
 the second core material is single stranded.   
     
     
         15 . The rope with spiral teeth according to  claim 1 , wherein
 a winding direction of the first rope relative to a central axis of the rope with spiral teeth is opposite to a winding direction of the second rope around the first rope.   
     
     
         16 . The rope with spiral teeth according to  claim 1 , wherein
 no adhesive is provided between the first rope and the second rope.   
     
     
         17 . The rope with spiral teeth according to  claim 1 , wherein
 the first rope and the second rope are heat-bonded to each other.   
     
     
         18 . A method for manufacturing a rope with spiral teeth, the method comprising:
 blending an infrared reflectance adjusting material into at least one of a first resin and a second resin such that a temperature rise characteristic of the first resin differs from a temperature rise characteristic of the second resin;   coating a first core material with the first resin to form a first rope;   coating a second core material with the second resin to form a second rope;   spirally winding the second rope around an outer circumferential surface of the first rope to form a rope precursor; and   supplying an energy to the rope precursor that is sufficient to melt one of the first resin and the second resin having a higher temperature rise characteristic until the first rope and the second rope are bonded to each other.