JP2016017247A - Wire member and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide wire member which can be produced relatively easily and has superior durability and slidability, and a manufacturing method thereof.SOLUTION: A wire member comprises a long core material and a surface arrangement member consisting of cellulosic polymers heat welded by melting a facing surface facing to the surface of the core material. An exposed surface of the surface arrangement member comprises a cellulose structure having carboxyl group in the molecules, and at least one part of the heat welded part of the heat welded surface arrangement member is hydrophobic cellulosic polymers.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a wire member and a manufacturing method thereof.

  Conventionally, wire members have been used in the operation systems and power transmission systems of various devices, devices, and instruments. Such a wire member is required to have excellent performance such as operability and responsiveness, easy to attach, difficult to break during use, and durability that can be used safely for a long period of time. Moreover, when inserting and using the inside of a conduit | pipe, having high slidability is calculated | required. Here, as a wire member for the purpose of improving slidability, a wire member formed of a fluororesin or the like is spirally wound around the surface of a core member and heat-sealed is known. . Also known is a material in which a hydrophilic wire is spirally wound around the surface of a core and heat-sealed.

  A wire member formed by spirally winding a wire formed from a fluororesin or the like around the surface of the core exhibits good slidability in an environment that is not wet by moisture (dry environment). In a wet environment (wet environment), there was a problem that good slidability was hardly exhibited. Therefore, in order to ensure good slidability in a wet environment, it is conceivable to wind a hydrophilic wire around the surface of the core material. It is relatively difficult to heat-fix and fix the wire member, and there is a possibility that the wire member may be peeled off from the surface of the core member during use of the wire member.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a wire member that can be manufactured relatively easily and has excellent durability and slidability, and a method for manufacturing the same. To do.

  The object of the present invention includes a long core material and a surface arrangement member made of a cellulosic polymer that is thermally fused by melting a facing surface facing the surface of the core material. The exposed surface of the wire member has a cellulose structure having a carboxyl group in the molecule, and at least a part of the heat-sealed portion of the surface arrangement member to be heat-fused is a hydrophobic cellulose-based polymer. Is achieved.

  In this wire member, the surface arrangement member is preferably a linear member that is spirally wound around the surface of the core member along the longitudinal direction of the core member.

The linear member is formed from a hydrophobic cellulosic polymer,
After being wound and heat-sealed on the surface of the core material, the exposed surface having the cellulose structure having the carboxyl group in the molecule by subjecting the exposed surface of the linear member to carboxymethylation treatment. A surface is preferably formed.

  Further, the above object of the present invention is to provide a disposing step of disposing a surface disposing member formed of a hydrophobic cellulosic polymer on the surface of a long core material, and heating the surface disposing member to form the core. A heating step of thermally fusing the surface arrangement member to the surface of the material, and subjecting the exposed surface of the surface arrangement member that has been heat-fused to carboxymethylation, This is achieved by a method for producing a wire member comprising a hydrophilic treatment step for introducing a carboxyl group into a molecule.

  In this wire member manufacturing method, the hydrophilic treatment step includes a step of bringing a treatment liquid containing monochloroacetic acid or an alkali metal salt of monochloroacetic acid into contact with the exposed surface of the heat-sealed surface arrangement member. Is preferred.

  Moreover, the said surface arrangement | positioning member is a linear member formed from hydrophobic cellulosic polymer | macromolecule, The said arrangement | positioning step is a surface of the said core material along the said linear member along the longitudinal direction of the said core material. It is preferable that it is the process of winding and arrange | positioning helically.

  ADVANTAGE OF THE INVENTION According to this invention, it can manufacture comparatively simply and can provide the wire member which has the outstanding durability and sliding property, and its manufacturing method.

It is a schematic structure principal part enlarged side view in the wire member which concerns on one Embodiment of this invention. It is a schematic structure principal part expanded sectional view along the axial direction in the wire member which concerns on one Embodiment of this invention. It is a principal part expanded sectional schematic diagram of the wire member shown in FIG. It is a block diagram for demonstrating the manufacturing method of the wire member shown in FIG. It is a schematic structure principal part enlarged side view which shows the modification of the wire member shown in FIG.

  Hereinafter, the wire member 1 concerning embodiment of this invention is demonstrated with reference to an accompanying drawing. Each figure is partially enlarged or reduced in order to facilitate understanding of the configuration. FIG. 1 is an enlarged side view of a main part of a schematic configuration of a wire member 1 according to an embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view of a main part of a schematic configuration along the axial direction (longitudinal direction of the wire member 1). It is. The wire member 1 is a wire member 1 used in various devices, devices, instrument operating systems, power transmission systems, and the like. In particular, the wire member can be suitably used in an environment wet with moisture (wet environment). An example of such a wire member 1 is a medical guide wire. As shown in FIGS. 1 and 2, the wire member 1 includes a core member 2 and a surface arrangement member 3 disposed on the surface of the core member 2.

  The core material 2 is a long wire-like member having flexibility. As this core material 2, it can form using the various materials used as the core material 2 of the conventional wire member. As the core wire, for example, various metal wires such as stainless steel, piano wire, cobalt-based alloy wire, pseudo-elastic alloy wire (including super-elastic alloy), steel wire, brass wire, conductive wire, aluminum wire, etc. should be used. Can do.

  When the core material 2 is configured using a cobalt-based alloy, its elastic modulus is high and has an appropriate elastic limit. For this reason, the core material 2 made of a cobalt-based alloy is excellent in torque transmission and hardly causes problems such as buckling. Any cobalt-based alloy may be used as long as it contains Co as a constituent element, but it contains Co as a main component (Co-based alloy: Co content in the elements constituting the alloy) Is preferable, and a Co—Ni—Cr alloy is more preferably used. By using an alloy having such a composition, the above-described effects become more remarkable. In addition, an alloy having such a composition has a high elastic modulus and can be cold-formed even as a high elastic limit, and by reducing the diameter while sufficiently preventing buckling from occurring due to the high elastic limit. And can have sufficient flexibility and rigidity to be inserted into a predetermined portion.

  In addition, the superelastic alloy is relatively flexible, has a resilience, and is difficult to bend, so that the core member 2 is made of a superelastic alloy, so that the wire member 1 is highly flexible and resistant to bending. Restorability can be obtained, follow-up performance with respect to blood vessels that are curved and bent in a complicated manner, etc., and better operability can be obtained. Further, even if the wire member 1 is repeatedly bent and bent, since the core member 2 is not bent due to the restoring property, the operability is prevented from being deteriorated due to the bent member being used during the use of the wire member 1. be able to.

  Various forms can be adopted as the form of the core material 2. For example, when the core material 2 is constituted by a metal wire, the core material 2 may be formed by a single metal wire, or the core material 2 is formed by twisting and then twisting a single metal wire. May be. Further, the core material 2 may be formed by twisting a plurality of metal wires, or may be formed by twisting a metal wire and a polymer linear member. Further, various configurations such as those in which the central portion and the surface portion are formed of different materials can be employed. Further, the entire surface of the core material 2 may be coated with a polymer material in advance.

  Further, the core material 2 may be configured such that the outer diameter thereof is substantially constant, or may be configured to be partially expanded or contracted. For example, when the distal end portion of the core material 2 is configured to have a tapered shape whose outer diameter decreases in the distal direction, the rigidity (bending rigidity, torsional rigidity) of the core material 2 is gradually increased in the distal direction. As a result, good flexibility can be imparted to the distal end portion of the wire member 1, and bending or the like can be prevented.

  Moreover, you may comprise the core material 2 by connecting the 1st core material part which comprises a front-end | tip part, and the 2nd core material part which comprises an intermediate part and a hand part by welding etc. When the core material 2 is constituted by the first core material portion and the second core material portion, it is preferable to set the diameter of the first core material portion to be smaller than the diameter of the second core material portion. Moreover, it is preferable to comprise a connection part so that it may become a taper shape so that a 1st core material part and a 2nd core material part may connect smoothly. Even when the core material 2 is configured in this way, the rigidity (bending rigidity, torsional rigidity) of the core material 2 can be gradually decreased toward the distal end direction, and as a result, the wire member 1 is excellent at the distal end portion. Therefore, it is possible to prevent bending and the like by obtaining the passability and flexibility of the narrowed portion.

  The surface arrangement member 3 is a member arranged on the surface of the core material 2, and is melt-bonded to the surface of the core material 2 by melting a facing surface facing the surface of the core material 2. The surface arrangement member 3 is made of a cellulosic polymer. Further, as shown in the enlarged schematic sectional view of the main part of FIG. 3, the exposed surface portion 31 of the surface arrangement member 3 has a cellulose structure having a carboxyl group in the molecule, and a heat fusion portion 32 to be thermally fused. At least a part of is configured to be a hydrophobic cellulosic polymer.

  Next, the manufacturing method of such a wire member 1 is demonstrated using the block diagram of FIG. As shown in the block diagram of FIG. 4, the manufacturing method of the wire member 1 includes an arrangement step S1, a heating step S2, and a hydrophilic treatment step S3. The disposing step S1 is a step of disposing the surface disposing member 3 formed of a thermoplastic and hydrophobic cellulosic polymer on the surface of the long core material 2. In the present embodiment, a linear member formed from a hydrophobic cellulosic polymer is used as the surface arrangement member 3, and this linear member is spiraled on the surface of the core material 2 along the longitudinal direction of the core material 2. Arrangement step S1 is constituted so that it may wind and arrange in the shape. The method of winding the linear member (surface arrangement member 3) around the core material 2 is not particularly limited, and examples thereof include a method of winding using a covering device used for manufacturing a covering yarn.

  Examples of the thermoplastic and hydrophobic cellulosic polymer forming the linear member (surface arrangement member 3) include cellulose acetate, cellulose diacetate, cellulose triacetate, cellulose acetate propionate, and cellulose. Examples include acetate butyrate. The method for producing the linear member (surface-arranged member 3) from the above-described cellulose-based polymer material is not particularly limited. For example, a conventionally known method such as a method of spinning a raw material by extrusion molding can be used. .

  Moreover, in FIG. 1, the linear member (surface arrangement | positioning member 3) wound helically around the surface of the core material 2 is a line adjacent in the direction along the longitudinal direction of the wire member 1 (core material 2). However, the present invention is not limited to such a configuration, and the longitudinal direction of the core member 2 is not limited to such a configuration. The interval between the linear members (surface arrangement members 3) adjacent to each other in the direction along the line can be arbitrarily set. For example, the interval between adjacent linear members (surface arrangement members 3) may be set to be wide in one part and set to be narrow in other parts, or adjacent linear members (surface arrangement members). 3) You may comprise so that it may mutually contact.

  The heating step S2 heats the linear member (surface arrangement member 3), melts the facing surface of the linear member (surface arrangement member 3) facing the surface of the core material 2, and causes the surface of the core material 2 to melt. This is a step of heat-sealing the linear member (surface arrangement member 3). By passing through this process, the heat fusion part 32 with the core material 2 is formed in the surface arrangement member 3. In addition, since the heat fusion part 32 is formed by melting a part of the linear member (surface arrangement member 3), as shown in FIG. 2 and FIG. The member 3) is deformed, and a predetermined region on the surface facing the core material 2 is brought into close contact with the surface of the core material 2.

  Here, examples of the heat treatment method in the heating step S2 include a method of applying heat from the outside of the linear member (surface arrangement member 3) wound around the core member 2 using a chamber heat treatment apparatus. be able to. Moreover, it can also carry out by applying a voltage to both ends of the core material 2 and conducting heating.

  Further, the core material 2 is electromagnetically heated by an electromagnetic induction heating device from the outside of the linear member (surface arrangement member 3) arranged on the core material 2, and the linear member (surface) is heated by the heat of the heated core material 2. The surface of the disposing member 3) facing the surface of the core member 2 is melted so that the linear member (surface disposing member 3) is fused to the core member 2 to thereby form the linear member (surface disposing member 3). It may be attached to the surface of the core material 2. Electromagnetic induction heating is a type of heating method that is also used in electromagnetic cookers (IH cooking heaters), high-frequency welding, etc., and causes a change in magnetic field (magnetic flux density) by passing an alternating current through the coil. This is a heating method that utilizes the principle of generating an induced current (eddy current) in a conductive substance placed in the magnetic field and generating heat by the resistance of the conductive substance itself.

  Since the density of the induction current generated in the electromagnetically heated core material 2 increases from the center of the core material 2 toward the surface thereof, the surface is heated (concentrated faster) than the inside of the core material 2. The surface of the linear member (surface arrangement member 3) facing the surface of the core material 2 can be efficiently heated and melted. In addition, since the site | part which generate | occur | produces heat | fever in the core material 2 can be collected on the surface by setting high the frequency of the electric current which flows into an electromagnetic induction heating apparatus (alternating current flowing into a coil), the electric current which flows into an electromagnetic induction heating apparatus It is preferable that the frequency be changed appropriately.

  By performing electromagnetic induction heating in this way, the surface (contact surface with the core material 2) facing the surface of the core material 2 of the linear member (surface arrangement member 3) can be rapidly melted, and therefore linear It becomes easy to maintain the molecular orientation that contributes to the physical properties of the member (surface-arranged member 3). Further, unlike heating by external heat transfer or radiation, energy beam irradiation, etc., the linear member (surface) is melted only at the contact interface between the linear member (surface arrangement member 3) and the core material 2 and its vicinity. It becomes easy to maintain the uneven surface shape of the arrangement member 3).

  In addition, as a heat treatment method in the heating step S2, various known heating means such as the above-described chamber-type heat treatment, energization heating, electromagnetic induction heating, heating by a far-infrared heater or applying hot air are used. Can do.

  In the hydrophilic treatment step S3, the exposed surface of the heat-sealed linear member (surface-arranged member 3) is subjected to carboxymethylation treatment, so that the cellulose-based height on the exposed surface of the linear member (surface-arranged member 3) is increased. This is a step of imparting hydrophilicity by introducing a carboxyl group into the molecule. As a hydrophilic treatment method in this hydrophilic treatment step S3, a treatment liquid containing monochloroacetic acid or an alkali metal salt of monochloroacetic acid was brought into contact with the exposed surface of the heat-sealed linear member (surface arrangement member 3). Thereafter, a method of reacting at a predetermined temperature for a predetermined time may be mentioned. In addition, as a method of introducing a carboxyl group into the cellulosic polymer on the exposed surface of the linear member (surface-arranged member 3), other than the method of bringing the treatment liquid into contact with the exposed surface of the linear member (surface-arranged member 3). Various methods may be used. In addition, if necessary, the saponification treatment may be performed with a strong alkali on the linear member (surface arrangement member 3) that has been heat-sealed before the hydrophilization treatment step S3.

  The alkali metal salt in the alkali metal salt of monochloroacetic acid is not particularly limited, and examples thereof include sodium salt and potassium salt. The concentration of monochloroacetic acid or the alkali metal salt of monochloroacetic acid in this treatment liquid is the content of the carboxyl group introduced into the cellulosic polymer in the exposed surface portion of the linear member (surface arrangement member 3). The treatment solution conditions may be appropriately determined so that the preferable lower limit is 5% owf, the preferable upper limit is 50% owf, the more preferable lower limit is 7% owf, and the more preferable upper limit is 40% owf. A preferred lower limit is 9% owf, and a more preferred upper limit is 37% owf.

  The treatment liquid preferably contains an alkali metal hydroxide, for example, sodium hydroxide. By adding sodium hydroxide, the content of carboxymethyl group described later can be increased. As the concentration of sodium hydroxide in the treatment solution is increased, the reactivity of carboxymethylation tends to increase, and it is usually preferably 0.5% owf or more. In addition, by blending the alkali metal hydroxide with the treatment liquid, it is possible to simultaneously proceed both the saponification treatment and the hydrophilization treatment of the cellulosic polymer in the hydrophilic treatment step S3. It is not necessary to saponify the attached linear member (surface arrangement member 3) with a strong alkali, and it is possible to perform a hydrophilic treatment quickly.

  It is preferable that a processing aid is further blended into the treatment liquid. By blending the processing aid, the carboxymethylation reaction proceeds uniformly in both the surface direction and the thickness direction of the linear member (surface-arranged member 3) made of cellulosic polymer in a shorter time, and linear. Generation | occurrence | production of the partial hydrophilization unprocessed part in the exposed surface 31 of a member (surface arrangement | positioning member 3) can be suppressed.

  The processing aid is not particularly limited. For example, higher alcohol sulfate, polyoxyalkylene alkyl ether sulfate, alkylbenzene sulfonate, alkyl naphthalene sulfonate, naphthalene sulfonate formalin condensate, higher alcohol phosphoric acid. Examples include ester salts, polyoxyalkylene alkyl ether phosphate esters, polyoxyalkylene alkyl ether carboxylate salts, polycarboxylates, funnel oils, petroleum sulfonates, and alkyl diphenyl ether sulfonate salts. These may be used independently and 2 or more types may be used together. Commercially available processing aids include, for example, color fine, silkerol (above, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), neolate, texport (above, manufactured by Nikka Chemical Co., Ltd.), flora knit (produced by Henkel Japan), marcellin. (Manufactured by Meisei Chemical Co., Ltd.), score roll (manufactured by Kitahiro Chemical Co., Ltd.) and the like.

  Although it does not specifically limit as a density | concentration of the processing aid in a process liquid, A preferable minimum is 0.1% owf and a preferable upper limit is 20% owf. When the concentration of the processing aid is less than 0.1% owf, the hydrophilicity of the resulting surface arrangement member 3 may be partially deteriorated. In particular, the surface arrangement member 3 is hydrophilic in the surface direction of the exposed surface 31. There may be variations in sex. When the concentration of the processing aid exceeds 20% owf, the hydrophilicity of the obtained surface arrangement member 3 may be lowered. A more preferable lower limit of the concentration of the processing aid in the treatment liquid is 0.2% owf, and a more preferable upper limit is 10% owf.

  As a method for performing carboxymethylation treatment on the exposed surface 31 of the heat-sealed surface arrangement member 3, a method of spraying the treatment liquid onto the surface arrangement member 3 or the treatment liquid is stored. The method performed by immersing the core material 2 by which the linear member (surface arrangement | positioning member 3) was arrange | positioned in the surface can be mentioned in a storage tank.

  Although it does not specifically limit as reaction temperature after making the said process liquid contact the exposed surface 31 of the surface arrangement | positioning member 3 heat-sealed, A preferable minimum is 60 degreeC, a preferable upper limit is 160 degreeC, A more preferable minimum is 70 ° C. The reaction time after the exposed surface 31 of the heat-sealed surface arrangement member 3 is brought into contact with the treatment liquid is not particularly limited, but the preferred lower limit is 10 seconds, and the preferred upper limit is 60 minutes, more preferred. The lower limit is 15 seconds, the more preferable upper limit is 45 minutes, and the particularly preferable upper limit is 30 minutes. Thus, the damage given to a linear member (surface arrangement | positioning member 3) can be suppressed by setting it as the range of reaction time.

  By undergoing such a hydrophilization step, the exposed surface 31 of the linear member (surface arrangement member 3) can be configured to have a cellulose structure having a carboxyl group in the molecule and to have hydrophilicity.

  As described above, in the wire member 1 according to this embodiment, the surface arrangement member 3 made of a hydrophobic cellulosic polymer is arranged on the surface of the long core material 2, and the surface of the core material 2 is subjected to heat treatment. After the surface arrangement member 3 is heat-sealed to the surface, it is manufactured by performing a hydrophilic treatment. At the stage of the heat treatment, the surface arrangement member 3 made of a hydrophobic cellulosic polymer having a thermoplastic property that is easily heat-sealed is the object of heat fusion. It becomes easy to fix, and it becomes easy to manufacture the wire member 1 having the hydrophilic surface arrangement member 3.

  Moreover, after heat-sealing the surface arrangement | positioning member 3 which consists of hydrophobic cellulosic polymer | macromolecule to the surface of the core material 2 by heat processing, a hydrophilic treatment is performed and it is shown in the principal part expanded sectional schematic diagram of FIG. Moreover, since the exposed surface 31 of the surface arrangement member 3 is configured to have a cellulose structure having a carboxyl group in the molecule, it can exhibit excellent slidability in an environment wet with moisture (wet environment). it can.

  In addition, the wire member 1 according to the present embodiment arranges the surface arrangement member 3 made of a hydrophobic cellulosic polymer on the surface of the long core material 2, and after performing the heat treatment, the surface arrangement member 3. Since the exposed surface 31 is manufactured by subjecting it to a hydrophilic treatment, a part of the portion (thermal fusion portion 32) where the core material 2 and the surface arrangement member 3 shown in FIG. , It can be left as a part that does not come into contact with the treatment liquid used for the hydrophilic treatment. That is, a part of the heat-sealing part 32 can be maintained in the state of the hydrophobic cellulosic polymer, and the adhesion of the surface arrangement member 3 to the surface of the core material 2 can be maintained in a strong state. It becomes possible, and it can prevent effectively that the surface arrangement | positioning member 3 peels from the surface of the core material 2 after a hydrophilic treatment, and can improve the durability of the wire member 1.

  In addition, when the wire member 1 according to the present embodiment is used by being inserted into the inside of a conduit, for example, the wire member 1 includes the surface arrangement member 3 disposed on the surface of the core member 2, The surface arrangement member 3 forms a convex portion projecting from the surface of the core material 2, and the convex portion comes into contact with the inner surface of the conduit, so that the contact area between the wire member 1 and the inner surface of the conduit is greatly reduced. Can be made. Thereby, the slidability of the wire member 1 with respect to the conduit is improved, and smooth advance and retreat movement in the conduit is possible.

  As mentioned above, although the wire member 1 which concerns on this invention was demonstrated, a specific structure is not limited to the said embodiment. In the above-described embodiment, the linear member (surface arrangement member 3) used in the arrangement step S1 is a single linear member, and this is spirally wound around the surface of the core member 2 to form the wire member 1. Although it is comprised, it is not specifically limited to such a structure, Even if it comprises the wire member 1 by winding a some linear member (surface arrangement | positioning member 3) on the surface of the core material 2 helically. Good. When winding a plurality of linear members (surface arrangement member 3) around the core material 2, each linear member to be wound (surface arrangement member 3) may be formed from the same cellulosic polymer material, Or you may form from the cellulose polymer material from which a kind differs. Further, when a plurality of linear members (surface arrangement member 3) are spirally wound around the core material 2, the winding direction of each linear member (surface arrangement member 3) may be the same direction, You may wind so that the winding direction of a linear member (surface arrangement | positioning member 3) may become reverse. Further, as shown in the enlarged schematic side view of the main part of the configuration shown in FIG. 5, the surface arrangement member 3 is configured so as to form a mesh structure, and the surface arrangement member 3 is arranged on the outer surface of the core material 2. Also good. Such a network structure may be formed in any manner, for example, by a braid manufacturing method, or formed by knitting a linear member (surface arrangement member 3) in the manner of forming a knitted fabric. May be. When the surface arrangement member 3 is configured so as to form a network structure in this way, a large number of knot portions 6 between the linear members are formed. Even if the wire breaks and peels off from the surface of the wire member 1, the progress of peeling can be stopped at the knot portion 6.

  Moreover, as the linear member (surface arrangement | positioning member 3) used by arrangement | positioning step S1, even if it is the strand wire member formed by twisting together the wire formed from the above-mentioned hydrophobic cellulose polymer material, Good. Each wire to be twisted may be formed of the same type of hydrophobic cellulose polymer material, or may be formed of different types of hydrophobic cellulose polymer materials. Moreover, the number of each wire provided to the twisted yarn is not particularly limited, and can be formed by combining various numbers.

  Moreover, when using a stranded wire member as the linear member (surface arrangement | positioning member 3) used by arrangement | positioning step S1, the material from which a part of wire twisted together is not hydrophilized by hydrophilization process step S3. What is formed from may be used. For example, a part of a wire to be twisted may be formed from a material that is not hydrophilized and maintains hydrophobicity. As such a material, for example, a fluorine-based polymer material having slipperiness can be exemplified. Examples of the fluorine polymer material include tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), polytetrafluoroethylene (PTFE), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), and ethylene-tetra. Fluoroethylene copolymer (ETFE), polyvinylidene fluoride (PVDF), polychlorotrifluoroethylene (PCTFE), tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer (EPE), etc., and these polymers And a hydrophobic polymer material formed from a fluorine-based polymer such as a copolymer containing.

  Further, a part of the wire to be twisted may be a wire formed from, for example, a polyester polymer or a polyamide polymer. Wires made from polyester polymers and polyamide polymers melt at a relatively low temperature, making it easy to heat-bond wires that are twisted together and easily integrate wires that are twisted together It becomes possible to do. Here, the polyester-based polymer is more preferably an aliphatic polyester-based polymer in that the fusion temperature is low. Examples of the aliphatic polyester polymer include polyethylene succinate, polybutylene succinate, polyhexamethylene succinate, polyethylene adipate, polyhexamethylene adipate, polybutylene adipate obtained by polycondensation of glycol and aliphatic dicarboxylic acid. Polyethylene oxalate, polybutylene oxalate, polyneopentyl oxalate, polyethylene sebacate, polybutylene sebacate, polyhexamethylene sebacate and the like. Examples of the aliphatic polyester polymer include poly (α-hydroxy acid) such as polyglycolic acid and polylactic acid or copolymers thereof, poly (ε-caprolactone) and poly (β-propio). Lactones) such as poly (ω-hydroxyalkanoates), poly (3-hydroxybutyrate), poly (3-hydroxyvalerate), poly (3-hydroxycaprolate), poly (3-hydroxyheptanoate) ), Aliphatic polyesters such as poly (β-hydroxyalkanoate) such as poly (3-hydroxyoctanoate) and poly (4-hydroxybutyrate). Moreover, as the above-mentioned polyamide polymer, an aliphatic polyamide polymer is more preferable in that the fusion temperature is low. Examples of the aliphatic polyamide polymer include polyamide 12, polyamide 11, polyamide 6, polyamide 66, and the like. A part of the wire to be twisted may be a wire formed from a metal material.

  As described above, a part of the wire to be twisted is formed using a linear member (surface arrangement member 3) formed from a material that is not hydrophilized even after the hydrophilization treatment step S3 and maintains hydrophobicity. When the wire member 1 is manufactured, both the hydrophilized wire and the wire that is not hydrophilized and maintains hydrophobicity appear on the exposed surface of the linear member (surface arrangement member 3). In wet environments (wet environments), the hydrophilized wire exhibits good slidability, but in environments that are not wet with moisture (dry environments), it remains hydrophobic without being hydrophilized. Thus, the wire member 1 can be obtained in which the wire made of the fluorine-based polymer material or the like exhibits good slidability.

  Moreover, in the said embodiment, the cross-sectional shape of the linear member wound around the outer surface of the core material 2 is not specifically limited, A cross-sectional shape may be circular or non-circular. Examples of the non-circular cross-sectional shape include an elliptical shape, a polygonal cross-sectional shape, and a fan-shaped cross-sectional shape.

  Moreover, in the said embodiment, although linear member is used as the surface arrangement | positioning member 3 in arrangement | positioning step S1, and this is wound around the surface of the core material 2, it is such a structure. For example, a coating layer made of a hydrophobic cellulosic polymer material may be formed over substantially the entire surface of the core material 2, and the coating layer may be used as the surface arrangement member 3. After the formation of such a coating layer (surface arrangement member 3), the exposed surface of the surface arrangement member 3 (coating layer) is formed through the heating step S2 and the hydrophilic treatment step S3 in the same manner as described above. Obtaining a wire member 1 having a cellulose structure having a carboxyl group in a molecule and having at least a part of a heat-sealed portion of a surface-arranged member 3 (coating layer) to be heat-fused as a hydrophobic cellulosic polymer Can do. The heat fusion part is formed at the interface between the coating layer and the core material 2. Here, the method of forming a coating layer made of a hydrophobic cellulosic polymer material on the surface of the core material 2 is not particularly limited, and various methods can be employed. For example, a method of spraying a liquefied hydrophobic cellulosic polymer material onto the surface of the core material 2 or a storage tank storing a liquefied hydrophobic cellulosic polymer material, The method performed by immersing the core material 2 can be mentioned.

  Moreover, when forming the surface arrangement | positioning member 3 by coating as mentioned above, the shape of a coating layer shall be a shape which winds the surface of the core material 2 helically along the longitudinal direction of the core material 2. You can also. For example, on the surface of the core material 2, after masking a region other than a portion where the spiral coating layer (surface arrangement member 3) is arranged, a predetermined coating material (the above-described hydrophobic cellulosic polymer material is used). This can be done by applying a liquefied one) and then removing the masking. The masking can be performed by, for example, using a masking tape and winding the masking tape spirally around the surface of the core member 2 with a gap having a predetermined width.

DESCRIPTION OF SYMBOLS 1 Wire member 2 Core material 3 Surface arrangement member (linear member)
31 Exposed surface 32 Thermal fusion part 4 Thermal fusion part 6 Knot part

Claims (6)

A long core material, and a surface arrangement member made of a cellulosic polymer that is thermally fused by melting a facing surface facing the surface of the core material,
The exposed surface of the surface arrangement member has a cellulose structure having a carboxyl group in the molecule,
A wire member in which at least a part of the heat-sealed portion of the surface arrangement member to be heat-sealed is a hydrophobic cellulosic polymer.   The wire member according to claim 1, wherein the surface arrangement member is a linear member that is spirally wound around the surface of the core member along the longitudinal direction of the core member.   The linear member is formed of a hydrophobic cellulosic polymer, and is wound around the surface of the core material and thermally fused, and then subjected to a carboxymethylation treatment on the exposed surface of the linear member. The wire member according to claim 2, wherein the exposed surface having a cellulose structure having the carboxyl group in the molecule is formed. A disposing step of disposing a surface disposing member formed of a hydrophobic cellulosic polymer on the surface of a long core;
A heating step of heating the surface arrangement member and thermally fusing the surface arrangement member to the surface of the core;
And a hydrophilic treatment step of performing a carboxymethylation process on the exposed surface of the heat-sealed surface arrangement member and introducing a carboxyl group into the cellulosic polymer on the exposed surface of the surface arrangement member. Production method.   5. The wire member according to claim 4, wherein the hydrophilization treatment step includes a step of bringing a treatment liquid containing monochloroacetic acid or an alkali metal salt of monochloroacetic acid into contact with an exposed surface of the heat-sealed surface arrangement member. Production method. The surface arrangement member is a linear member formed from a hydrophobic cellulosic polymer,
The method of manufacturing a wire member according to claim 4 or 5, wherein the disposing step is a step of spirally winding the linear member around the surface of the core material along the longitudinal direction of the core material. .

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