DE2713435A1 - FISHING LINE - Google Patents

Description

Priority: April 7, 1976, Japan, Pat. 38202/1976

Applicant;

Kureha Kagaku Kogyo KK
B, 1-chome, Horidome-cho,
Nihonbaehi, Chuo-ku

Tokyo / Japan Fishing line The invention relates to an improved fishing line.

The fishing lines belong to two different main groups, namely the actual fishing lines or Ulurfleinsn and the hook lines or leaders.

The requirements for a leader are purity with equal own strength, especially knot strength, tenderness or stiffness, rate of descent, poor visibility

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in water due to coloration or transparency, printability, etc. For the UJurflines are under among other things, the suitability for UJeitwerfer demanded, which in turn can be expressed by the pliability of the yarn and drainage from the bobbin, low weight per unit length the cord and as large a ll / urf distance as possible Fish mouth, high sensitivity to biting one Fish, which in turn can be expressed by small waves in the air and / or when ejected in the Ulaeser, or low weight or as low as possible permanent deformation, and durability, which can also be expressed as greater resistance to abrasion, strong ability to recover from shape and / or suitable extensibility.

Due to the efforts to meet these requirements, Many different materials have been used to make fishing line. As preferred designs shapes are nylon-6, nylon-610, polyester, vinylon, i.e. Polyvinyl alcohol or its derivatives, polyvinylidene fluoride to call.

The main purpose of the invention is to create fishing lines that stand out compared to the prior art superior suitability for UJurf lines, especially when compared to the nylon-oil-floncfil lines currently available

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have the largest market share.

Two main properties are required for UJurflines, namely the achievement of the largest possible throw distances and the transmission sensitivity over corresponding distances for biting fish. In this regard, polyamide is lighter in weight, generally 1.13 up to 1.15, more suitable for the production of throw lines than vinylon, weight 1.28 to 1.30, polyester, weight 1.38, or polyvinylidene chloride, Ulichte 1.78 to 1.80.

The gliding ability of the throw line is essential for long-range cast suitability most important compared to the guides arranged on the fishing rod and the weight of thread per unit length of the line. In this regard, the permanent deformation and rigidity of the fishing line affect the target smooth passage of the line through its guides. Flexibility is therefore extremely important.

Even if the linen material is very hard, a soft, pliable, composite yarn or such Cuts are made when fine yarns are made of such material and then twisted. Certain improvements can therefore be achieved by changing the yarn structure from the Hflonof il version to the flflultif il version, i.e. a line assembled by twisting, over-

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is gone. On the other hand, a considerably increased flight resistance occurs due to such a structural change on, which is added to the conditions encountered when passing through the thread guides arranged on the fishing rod. Therefore, it can be assumed that a useful and reliable solution to the above-mentioned problems in one Reducing the weight of the throw line rests.

It should be noted, however, that the greatest sensitivity for the transmission of the attached impulse from the hook to the hand of the Anglers can be reached when the line is in its tensioned state. A noticeably wavy condition of the line in the air as well as in the water can occur with heavier lines, with which the transmission sensitivity to this extent is weakened.

Polyolefin throw lines have a lower weight than water and float on the surface of the water after the throw. They therefore also tend to form undulations to a considerable extent.

The efforts made so far, by choosing a special starting material or a special structure of the line to a special one in terms of casting properties and sensitivity Getting good fishing line did not lead to flawless solutions, because always through special ones

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Taking into account one property another has been disadvantaged. The invention is therefore based on the object to combine material and structural properties in such a way that there are noticeable improvements for the required properties surrender without mutual interference. In particular, a throw line is to be created with the invention, the weight of which is slightly larger than that of water, but it is pliable and resilient.

To solve this problem, the invention provides a composite consisting of a conjugated core and shell Throwing line created, the sheath made of polyamide and the core made of polyolefin. Because of this improvement becomes the superior flexibility and ease of de-curling of the polyamide combined in the most favorable way with the low weight and strength of the polyolefin, which is preferably a polypropylene.

In particular with throw lines, which have polyamide and polypropylene in conjugated form, as suggested, result superior performance properties including durability, To which the effective creep resistance and the elastic recovery of the polypropylene contribute.

A very important factor in the quality of the throw line depends on as has been confirmed by testing, from the

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The ratio of the polyamide or polyolefins used should be selected in a ratio of 30/70 to 90/10, so that the weight of the composition line according to the invention is in the range from 1.01 to 1.12, preferably in the range from 1.04 to 1.10.

If the composition ratio were selected in a range from 0/100 to 29/71, the overall density would be Composition line should be less than 1.01. Such Line sinks in the water with difficulty and sensitivity for the transmission of the fish with impulse considerably disturbed by the wavy condition of the line after casting, e.g. in moving sea water. Also would Polyolefin cores may crack if one composite line in sliding pressure contact with the guides on the fishing rod runs * At a composition ratio from 91/9 to 99/1 the total weight of the line exceeds 1.12; the line then shows no noticeable Difference to conventional nylon throw lines.

Commonly used composite conjugate yarns for clothing use the middle of the shell is offset from the core in such a way that the greatest possible crimpability is achieved results. Cine greater curling ability is enhanced by greater Eccentricity achieved. In the case of the present invention, however, the eccentricity should be as small as possible

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be. For use as a throw line, Eich recommends an eccentricity of less than 10 $ of the hull radius, preferably less than S%, in order to create a practically usable composite throw line.

For eccentricities over $ 10, the composition line tends to Loop formation, which interferes with the desired tight winding on the spool and the achievement of large casting distances, as it causes a considerably increased sliding resistance when the line runs through the guides

With conventional polyamide-polyolefin composite yarns the conjugation surfaces between shell and core are preferred executed with finely interlocking tongues and grooves, so that a possibly otherwise poor affinity is improved. As an optional possibility is also preferred placed a sticky polymer on the interface to improve the poor bond. All other possible A chemically modified polyolefin is used as a countermeasure used in place of the normal polyolefin to improve adhesion to the polyamide part.

In the case of the invention, it should be noted that the normal affinity achievable with conventional conjugate spinning processes or binding is in itself sufficient for the purpose intended here. That does not preclude further improvement the mutual clinginga any of the

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the measures described above are applied.

For the sheath, the usual polyamide is used according to the invention

Nylon-6, Nylon-66, or Nylon-610 are used. As a core material Conventional polyolefins such as polypropylene, polyethylene or their copolymers can be used for the invention.

A known composition spinning device can be used to manufacture a throwing line according to the invention. Polyamide and polyolefin are melted separately and separately the composition nozzle (s) of the facility in the Supplied predetermined composition ratio, so that at each nozzle outlet with a predetermined exit amount concentric shell-core composition is released into a cooling liquid bath. Then the leash becomes more humid or dry warm atmosphere oriented and stretched and then heat treatments in loose and tense Subject to condition.

From the above it is clear that the inventive Fishing line, which is formed by a composite thread consisting of conjugated, concentric sheath and core is characterized by the fact that it is lighter than nylon, but particularly pliable and essentially free is of permanent entanglements and, moreover, has a fairly high strength. Oa one of the used

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Materials is quite cheap polyolefin, the total material cost is decreased. In addition, the properties required for fishing with UJurflines are considerable has been improved.

For a better understanding of the invention, a numerical example is given below.

example

Polycapramid with a melt viscosity of 2800 poisen at 200 C and polypropylene with a melt viscosity of 2100 poisen were melted separately and under pressure by means of corresponding extruder nozzle elements of a composition nozzle unit supplied, with the polycapramid as the shell material and using the polypropylene as a core material for spinning a continuous, concentric composite filament became.

The composition nozzle had an overall diameter of 1.0 mm. A weight ratio of polycapramide to polypropylene such as 80/20 was used for the composition. The spun yarn composition was in a water bath at 10 ⁰ C

introduced for cooling and then stretched to 4.5 times in length by being armluftatmoaphäre of 12O ⁰ C passed through a U /, whereupon further to 1.1 times the length

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- 2713A35 M.

was drawn in dry warm atmosphere of 13O ⁰ C. The composition thread was then subjected to a 5% softening heat treatment in a dry, warm atmosphere at 100.degree. The resulting compositional thread showed a composition ratio of 73/27 with a density of 1.08.

The line produced on the U / ice showed a breaking strength. of 65 kg / mm, an elongation of $ 27 and a Young ' see module of 310 kg / mm.

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Claims (4)

PATENT CLAIMS 1. Fishing line in the form of an IKIonofil thread made of thermoplastic plastic, characterized by a Konipositionings thread made of concentrically conjugated sheath and core with a total light in the range from 1.01 to 1.12, based on a lUasseruiichte of 1, the ratio of materials used, namely polyamide for the shell and polyolefin for the core, is in the range of 30/70 to 90/10, and the eccentricity of the centers of the shell and core is less than 10 % of the outer diameter of the shell. 2. fishing line according to claim 1, characterized in that the core is made of polypropylene. 3 «fishing line according to claim 1 or 2, characterized in that that the total lightness of the cord is in the range of 1.04 to 1.10. 4. Fishing line according to one of the preceding claims, characterized by an eccentricity of less than 5 %, 0 9 8 4 2/0716 _e " _cn ORIGINAL INSPECTED