JP2011101618A - Fishing line - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fishing line which has strength, flexibility and appropriate stretch required for the fishing line, also has little degradation in strength due to frictional heat generated when a float stopper rubber is moved, and is particularly suitable as a line for fishing deepbodied crucian carp. <P>SOLUTION: The fishing line is made of a monofilament comprising a molten and spun resin composition of a mixture of nylon 6 resin and nylon 6/66 copolymer resin and has a diameter of 0.05-0.5 mm, a melting point of the monofilament of 215-230°C, a tensile strength of 8.0 cN/dtex or more, and a knot strength of 4.5 cN/dtex or more. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is suitable as a fishing line, particularly a spatula fishing road line, which has the strength, flexibility, and moderate elongation required as a fishing line, and is less affected by frictional heat generated when the floating rubber is moved. It is about fishing line.

  Conventionally, a polyamide monofilament has been suitably used as a fishing line material, taking advantage of its characteristics such as high flexibility, high strength, and appropriate elongation.

  However, many fishing lines made of polyamide monofilament use caproamide / hexamethylene adipamide copolymer (hereinafter referred to as nylon 6/66 copolymer resin) as a raw material in order to make the best use of the above characteristics. The fishing line made of the nylon 6/66 copolymer resin exhibits excellent flexibility, strength, and moderate elongation. On the other hand, because of the low melting point of the material, friction generated when the floating rubber is moved. There is a problem that the strength is reduced due to heat and it is unexpectedly cut, and there is an increasing demand for improvement in this respect.

  As a method for improving the heat resistance of the polyamide monofilament, a method of containing a heat-resistant agent such as a copper salt and an alkali metal salt and / or an alkaline earth metal salt (for example, see Patent Document 1), nylon 6/66 copolymer resin A method of adding 0.05 to 1% by weight of a hindered phenol compound and 0.1 to 0.5% by weight of a bisamide compound with respect to 100 parts by weight (for example, see Patent Document 2) is known. In this method, since the contained heat-resistant agent acts as a foreign substance, there is a problem that sufficient strength required for fishing line cannot be obtained.

On the other hand, an undrawn yarn is spun by mixing nylon 6/66 copolymer resin with polycaproamide (hereinafter referred to as nylon 6 resin) having a relatively high melting point and melt spinning, and the melting point of the monofilament plus 40 ° C. or higher. There is already known a method for obtaining monofilaments having a high wire diameter of 0.5 mm or more and high knot strength (for example, see Patent Document 3) by spinning and drawing under special drawing conditions such as performing the second stage drawing at However, the monofilament obtained by this method is too thick to be used as a normal fishing line because of its large diameter of 0.5 mm or more, and it is necessary to stretch the monofilament at a high temperature of 40 ° C. or higher. Therefore, energy efficiency was poor, and problems such as going against the trend of the times such as energy saving and CO ₂ emission reduction were included.

  As described above, conventional polyamide monofilaments lack strength required for fishing lines, are too thick to be used as fishing lines, or have poor energy efficiency in production. Therefore, these improvements have been demanded all the time.

JP-A-11-173244 JP 2002-69748 A JP 2004-52154 A

  The present invention has been achieved as a result of studying the above-described problems in the prior art as problems. That is, the object of the present invention is to provide a fishing line suitable for use as a spatula fishing road thread, which has both flexibility and moderate elongation, and is less susceptible to strength loss due to frictional heat generated when the floating rubber is moved. It is to provide.

  In order to achieve the above object, according to the present invention, a diameter obtained by melt spinning a resin composition in which 5 to 40% by weight of nylon 6/66 copolymer resin is mixed with 60 to 95% by weight of nylon 6 resin. It consists of a polyamide monofilament of 0.05 to 0.50 mm, the melting point of the monofilament is 215 to 230 ° C., the tensile strength measured according to the definition of JIS-L1013 is 8.0 cN / dtex or more, and the knot strength is 4.5 cN A hanging yarn is provided that is greater than / dtex.

In the fishing line of the present invention,
The nylon 6/66 copolymer resin is a copolymer of 80 to 95% by weight of a caproamide component and 5 to 20% by weight of a hexamethylene adipamide component;
A preferable condition is that the relative viscosity of the nylon 6 resin is higher than the relative viscosity of the nylon 6/66 copolymer resin, and that it is a spatula fishing road thread.

  According to the present invention, as will be described below, a fishing line, particularly a spatula, that has the strength, flexibility, and moderate elongation required as a fishing line, and that has less strength reduction due to frictional heat generated when the floating rubber is moved. A fishing line suitable as a roadline for carp fishing can be obtained.

  Below, the fishing line of this invention is demonstrated.

  In order to achieve the above object, the fishing line of the present invention has a nylon 6/66 copolymer resin of 5 to 40% by weight, preferably 15 to 30% of nylon 6 resin of 60 to 95% by weight, preferably 70 to 85% by weight. It is important to melt-spin the resin composition mixed in weight percent.

  Here, when the mixing ratio of the nylon 6/66 copolymer resin and the nylon 6/66 copolymer resin is increased by 60% by weight or less of the nylon 6 resin and the nylon 6/66 copolymer resin, the melting point of the monofilament becomes 215 ° C. or less. Therefore, it becomes a fishing line lacking in heat resistance and undesirably decreases in strength due to frictional heat generated when the floating rubber is moved, and conversely, nylon 6 resin 95% by weight or more, nylon 6/66 copolymer resin 5 If the mixing ratio of the weight percent or less and the nylon 6/66 copolymer resin is too low, the strength required for fishing lines, particularly knot strength, cannot be obtained, which is not preferable.

  The nylon 6/66 copolymer resin is preferably a copolymer of a caproamide component of 80 to 5% by weight and a hexamethylene adipamide component of 5 to 20% by weight. If the hexamethylene adipamide component contained in the nylon 6/66 copolymer resin is more than 20% by weight, the melting point of the nylon 6/66 copolymer resin will be lowered, resulting in poor heat resistance of the monofilament It is not preferable because the strength is easily lowered by frictional heat when the rubber is moved. Conversely, if the hexamethylene adipamide component is less than 5% by weight, the strength of the monofilament, particularly the knot strength, is not preferable.

  Furthermore, it is mentioned as a preferable condition that the relative viscosity of the nylon 6 resin constituting the fishing line of the present invention is higher than the relative viscosity of the nylon 6/66 copolymer resin. When the relative viscosity of the nylon 6 resin is lower than the relative viscosity of the nylon 6/66 copolymer resin, the dispersibility of the mixed nylon 6/66 copolymer resin is deteriorated and strength spots are generated. The heat resistance of the portion where the / 66 copolymer resin is gathered is also deteriorated, and the frictional heat generated when the floating rubber is moved tends to easily break the yarn, which is not preferable.

  Here, the relative viscosity of the nylon resin is not particularly limited, but a range of 3.0 to 5.0, preferably 3.5 to 4.5 is selected, and the relative viscosity of the nylon 6/66 copolymer resin is selected. As the viscosity, a range of 2.5 to 4.0, preferably 3.0 to 3.5 is selected.

  In addition, the resin composition constituting the monofilament of the present invention has, for example, a pigment, a dye, a titanium oxide, a weathering agent, a light-resistant agent, a crystallization inhibitor, a metal compound, a specific gravity, as long as the target properties are not impaired. Additives such as a regulator, a water repellent treatment agent, a hydrophilic treatment agent, a phosphorescent agent, and a fluorescent agent can be contained.

  In the monofilament constituting the fishing line of the present invention, the diameter is 0.05 mm to 0.50 mm, preferably 0.10 to 0.30 mm, and the melting point is 215 ° C to 230 ° C, preferably 220 ° C to 225 ° C. The tensile strength measured according to JIS-1013 is 8.0 cN / dtex or more, preferably 8.5 cN / dtex or more, and the knot strength is 4.5 cN / dtex or more, preferably 5. It is important that it is 0 cN / dtex or more.

  If the diameter of the monofilament is smaller than 0.05 mm, the thread is too thin and the absolute strength becomes low and cannot be used as a fishing line. If the diameter is thicker than 0.50 mm, the rigidity coming from the thickness of the thread becomes too high and it is supple. It will be lacking. Further, if the melting point of the monofilament is lower than 215 ° C., it is not preferable because the strength is easily lowered by frictional heat when the floating rubber is moved. If the melting point of the monofilament is 230 ° C. or more, the strength of the monofilament is decreased. Therefore, it is not preferable.

  Furthermore, if the tensile strength of the monofilament is 8.0 cN / dtex or less and the knot strength is 4.5 cN / dtex or less, the strength as a fishing line cannot be obtained, which is not preferable.

  The fishing line of the present invention can exhibit a particularly effective effect when it is used as a spatula fishing road line that moves the floating rubber and adjusts the shelves frequently.

  The fishing line of the present invention thus obtained has heat resistance characteristics excellent in frictional heat generated when the floating rubber is moved while having strength, flexibility, and moderate elongation. It can be suitably used as a spatula fishing road thread that moves and adjusts shelves frequently.

  Below, the fishing line of this invention is demonstrated in more detail based on an Example. In addition, evaluation of the fishing line in an Example was performed with the following method.

[Tensile strength / Knot strength]
According to the definition of JIS L1013. That is, after the sample taken in the shape of a bowl is left in a temperature / humidity adjustment chamber at 20 ° C. and 65% RH for 24 hours, a “Tensilon” RTM500 type tensile tester manufactured by Orientec Co., Ltd. is used. Yarn length: 250 mm Tensile speed: 300 mm The tensile strength was determined by repeating the cutting strength (N) measured under the conditions of 1 min / min by the fineness.

[Elongation at break]
According to the definition of JIS L1013. That is, after the sample taken in the shape of a bowl is left in a temperature / humidity adjustment chamber at 20 ° C. and 65% RH for 24 hours, a “Tensilon” RTM500 type tensile tester manufactured by Orientec Co., Ltd. is used. Yarn length: 250 mm Tensile speed: 300 mm Per minute, and the elongation when the sample was cut was measured.

[diameter]
The diameter of the fishing line was randomly measured at 5 points with a digital micrometer (manufactured by MITUTOMO) and displayed as the average value.

[Melting point of monofilament]
The melting point of the monofilament was determined from the endothermic peak when the temperature was raised from room temperature to 300 ° C. with a sample amount of 5.00 mg and a temperature increase rate of 10 ° C./min.

[Heat-resistant]
A sample of Sinwa's floating rubber "Hera Senka" small size (compatible road thread No. 0.8-1.2) passed through a monofilament and made two reciprocations at intervals of 50 cm, and then the tensile strength was measured to determine the strength of the blank. The strength retention rate was determined by repeating the above, and it was judged that those having a strength retention rate of 70% or less were poor in heat resistance.

[Actual fishing test]
Actually, 10 anglers fished a spatula using the fishing line of the present invention, and the following criteria were used.
○ ... I was able to catch a big fish without any problems,
× ・ ・ ・ When I caught the fish, the thread was cut and I missed the fish.

[Example 1]
As nylon 6 resin, M1021 manufactured by Toray Industries Inc. (melting point 223 ° C., relative viscosity 3.40) 80% by weight, as nylon 6/66 copolymer resin M6001 manufactured by Toray Industries Inc. (6/66 copolymer ratio 85:15, melting point 194) C. and a relative viscosity of 3.20) A resin composition mixed with 20% by weight was fed to an extruder-type spinning machine, melted at a temperature of 270.degree. C., extruded through a die having a pore diameter of 1.0 mm, and immediately after 10 An undrawn yarn was obtained by cooling and solidifying in a cold water bath at 0 ° C.

  The undrawn yarn was continuously drawn at a first stage drawing condition: 3.8 times in water vapor at 100 ° C., and then at the second stage condition: 1.53 times in an inert gas at 224 ° C. (total draw ratio of 5 .8) and then 0.9 times relaxed heat setting treatment in an inert gas at 180 ° C., and then a finishing oil agent is applied by a touch roller, and from a polyamide monofilament having a diameter of 0.165 mm I got a fishing line. Table 1 shows the physical property measurement results of the obtained fishing line and the actual fishing evaluation results when this is used as a spatula fishing line.

[Example 2]
A fishing line made of a polyamide monofilament having a diameter of 0.165 mm was obtained in the same manner as in Example 1 except that the mixing ratio of the resin composition was changed to 90% by weight of nylon 6 resin and 10% by weight of nylon 6/66 copolymer resin. It was. Table 1 shows the physical property measurement results of the obtained fishing line and the actual fishing evaluation results when this is used as a spatula fishing line.

[Example 3]
A fishing line made of a polyamide monofilament having a diameter of 0.165 mm was obtained in the same manner as in Example 1 except that the mixing ratio of the resin composition was changed to 70% by weight of nylon 6 resin and 30% by weight of nylon 6/66 copolymer resin. It was. Table 1 shows the physical property measurement results of the obtained fishing line and the actual fishing evaluation results when this is used as a spatula fishing line.

[Comparative Example 1]
Polyamide 66 resin Toray Co., Ltd. M3001C instead of nylon 6/66 copolymer resin with respect to 80% by weight of Toray Co., Ltd. M1021 (melting point 223 ° C., relative viscosity 3.40) as nylon 6 resin. (Melting point 264 ° C., relative viscosity 2.95) A fishing line made of polyamide monofilament having a diameter of 0.165 mm was obtained in the same manner as in Example 1 except that the weight was changed to 20% by weight. Table 1 shows the physical property measurement results of the obtained fishing line and the actual fishing evaluation results when this is used as a spatula fishing line.

[Comparative Example 2]
A fishing line made of polyamide monofilament having a diameter of 0.165 mm was obtained in the same manner as in Example 1 except that the mixing ratio of the resin composition was changed to 30% by weight of nylon 6 resin and 70% by weight of nylon 6/66 copolymer resin. Table 1 shows the physical property measurement results of the obtained fishing line and the actual fishing evaluation results when this is used as a spatula fishing line.

[Comparative Example 3]
A fishing line made of polyamide monofilament having a diameter of 0.165 mm was obtained in the same manner as in Example 1 except that the resin composition was nylon 6 resin alone. Table 1 shows the physical property measurement results of the obtained fishing line and the actual fishing evaluation results when this is used as a spatula fishing line.

[Comparative Example 4]
A fishing line made of a polyamide monofilament having a diameter of 0.165 mm was obtained in the same manner as in Example 1 except that the resin composition was nylon 6/66 copolymer resin alone. Table 1 shows the physical property measurement results of the obtained fishing line and the actual fishing evaluation results when this is used as a spatula fishing line.

[Comparative Example 5]
Example 1 except that the resin composition was composed of a nylon 6/66 copolymer resin mixed with 0.5% by weight of a hindered phenol compound (Ciba Geigy Corp., Irganox 1098) for the purpose of improving heat resistance. A fishing line made of polyamide monofilament having a diameter of 0.165 mm was obtained in the same manner. Table 1 shows the physical property measurement results of the obtained fishing line and the actual fishing evaluation results when this is used as a spatula fishing line.

  As is clear from the results in Table 1, the fishing lines satisfying the conditions of the present invention (Examples 1 to 3) all have excellent heat resistance and high strength. It can be seen that it is extremely practical when used as a spatula fishing line.

  On the other hand, the fishing line that does not satisfy the conditions of the present invention (Comparative Examples 1 to 5) has not been able to fully exhibit the effect as a fishing line.

  For example, when nylon 66 resin is mixed instead of nylon 6/66 copolymer resin (Comparative Example 1), although heat resistance is improved, a high-strength fishing line cannot be obtained. When it was used as a fish, the thread was cut when the fish was hung and it lacked practicality. Further, when the mixing ratio of the resin composition is 30% by weight of nylon 6 resin and 70% by weight of nylon 6/66 copolymer resin (Comparative Example 2), a high-strength fishing line can be obtained, but the melting point of the monofilament is low. As a result, the heat resistance of the fishing line is inferior, and when used as a spatula fishing road line, when the fish is hung, the road line is cut from the position where the floating rubber is moved, and it is not practical. It was. Further, when the resin composition is made of nylon 6 resin alone (Comparative Example 3), the high-strength fishing line cannot be obtained, so when used as a spatula fishing road line, the road line breaks when the fish is hung. It was not practical. When the resin composition is made of nylon 6/66 copolymer resin alone (Comparative Example 4), the heat resistance of the fishing line is inferior due to the lower melting point of the monofilament, and the fish is used as a spatula fishing road thread. When the hanger was hung, the yarn was cut from the vicinity where the floating rubber was moved, which was not practical. When the resin composition is composed of a nylon 6/66 copolymer resin mixed with a hindered phenol heat-resistant agent (Comparative Example 5), the strength, particularly the knot strength, is low, and the melting point of the monofilament is low. Accordingly, the heat resistance of the fishing line is inferior, and when used as a spatula fishing road line, the road line is cut off from the position where the floating rubber is moved when the fish is hung, and the practicality is lacking.

  As described above, the fishing line of the present invention has heat resistance characteristics that are excellent in frictional heat generated when the floating rubber is moved while having strength, flexibility, and moderate elongation. Its practicality is extremely effective when used as a spatula fishing road thread that moves the stopper rubber and adjusts the shelves frequently.

Claims (4)

A nylon monofilament having a diameter of 0.05 to 0.5 mm formed by melt spinning a resin composition comprising 60 to 95% by weight of nylon 6 resin and 5 to 40% by weight of nylon 6/66 copolymer resin. The melting point of the monofilament is A fishing line characterized by having a tensile strength of not less than 8.0 cN / dtex and a knot strength of not less than 4.5 cN / dtex measured at 215 to 230 ° C. according to JIS-L1013. The fishing line according to claim 1, wherein the nylon 6/66 copolymer resin is a copolymer of 80 to 95% caproamide component and 5 to 20% by weight of hexamethylene adipamide component. The fishing line according to claim 1 or 2, wherein a relative viscosity of the nylon 6 resin is higher than a relative viscosity of the nylon 6/66 copolymer resin. The fishing line according to any one of claims 1 to 3, wherein the fishing line is a spatula fishing road line.