JPS6059112A - Monofilament with slubs and its production - Google Patents

Abstract

PURPOSE:Monofilaments that have slubs which are composed of three or more leaflets attaching adjacently and crossing one another at their surfaces lengthwise in a desired interval, thus enabling the cords therefrom to be tied easily. CONSTITUTION:A thermoplastic resin is melted and extruded from the round orifice 13 in the dice 12 continuously at a constant through-put and from the annular orifice 14 intermittently to form a filament with intermittent thick parts 7. Before the inside of the thick parts 7 solidifies, the filament is passed through between a couple of sizing rolls 17, 17' to form slubs, then, after solidification, drawn to produce the objective monifilament with slubs 6. The sizing rolls have a number of projections 30-32 on their periphery, which press the thick parts 7 to form the slubs 4 which are composed of a plurality of leaflets attaching adjacently 1-3 and crossing one another at their surfaces.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seasonal monofilament and its production θ.

Conventionally, monofilament 1-iqL made of thermoplastic resin.

It is widely used in fishing and as an agricultural material.

For example, in the cultivation of scallops and the like, monofilament is used as a thread for suspending shellfish from ropes, ropes, etc. In other words, in the single-hanging method shown in Figure 1, a hole about one throat in diameter is made in the scallop, a monofilament is threaded through the hole, a knot is made, the other end is tied tightly to a rope, and then the scallop is hung in the sea. Grow and farm. In the case of the double-hanging method shown in Figure 2.

After fixing a shellfish to one end using the same procedure as above, the middle part of the monofilament is tied to a rope, and after a shellfish is fixed to the other end, the monofilament is suspended in the sea and cultured. At this time, the work of tying the monofilament to the rope is very time consuming and the work efficiency is extremely low.

The present invention provides a monofilament with parts that can greatly simplify one operation in cultivating scallops and the like, and can be fixed without slipping through hanging ropes, ropes, etc., and a method for manufacturing the same.

The present invention is.

(1) A monofilament made of thermoplastic resin that is composed of at least 50 adjacent plate-like pieces, knots where adjacent plate-like pieces intersect, and monofilaments connecting each part. , and (2) using an extrusion die equipped with a circular outlet for forming a filament and an annular outlet surrounding the circular outlet.

Thermoplastic resin is continuously extruded from one circular discharge port and intermittently from an annular discharge port to form a thread having intermittently thick parts, and a pair of threads are formed with a large number of protrusions on the outer periphery. From the rolls of The roll is sloped at different angles from one end to the other end.

A method for producing a monofilament with parts, characterized in that the thread having the above-mentioned thick part is passed through a sizing roll having a thread guide groove provided at the center of the end face of the protrusion, and then drawn. be.

The attached monofilament of the present invention can be easily inserted in between the strands of the rope or rope when fixing scallops or the like to a hanging rope or rope. and,
When shellfish are hung on both sides using known monofilaments, the two shellfish often come close to each other, but when the monofilament with parts of the present invention is used, they come to be in opposite positions in a straight line.

Since it is difficult for the shellfish to come close to each other, it greatly contributes to the work and effectiveness of aquaculture. Furthermore, this monofilament with parts can be used as a fishery bone shrine other than those mentioned above, and also as an agricultural material.

Next, two embodiments of the present invention will be explained based on embodiments shown in the drawings.

Examples of the thermoplastic resin that is the material for the monofilament of the present invention include polyamide, polypropylene, polyethylene, and polyester. Among them, polyamide is preferably used.

First, the attached monofilament will be explained.

FIG. 6 is a schematic diagram of an embodiment of a monofilament with nine parts according to the present invention. The monofilament 6 with sections consists of knots 4 and monofilaments 5 that connect each section. The node 4 is composed of three contacting plate-like pieces 1, 2.3. Adjacent plate-shaped pieces 1 and 2, 2 and 3 are 60 to 120. Preferably they are arranged intersectingly at a 90 angle. The node 4 may be composed of four or more plate-like pieces. Small plate-shaped piece 1.2
．． The size of 3 is usually 5 to 10 in width and 5 to 15 in length.

The thickness is 1 to 2 Tn1n. The monofilament 5 connecting each node 4 has a diameter of 0.7 to 1.0. with a circular cross section.

The length between parts is 150~00. It is preferable that

Next, a method for manufacturing a one-piece monofilament will be described. The manufacturing flow route is shown in FIG. 6, and the cross-sectional view of the extrusion die is shown in FIG.

A thermoplastic resin is melted and extruded into an extrusion die 12 by an extruder 11 .

The extrusion die 12 is a circular extrusion die I-+ for forming a filament.
16 and 1 circular outlet 1'' surrounding the circular outlet 16'' 14 (+
Ifi is getting better. The diameter of the circular discharge port 15 is not particularly limited.

Generally, the inner diameter is 1 to 4 m. Further, the opening width t of the annular discharge port 14 surrounding the circular discharge port +415 is 9, usually 1 to 6 cylinders.

The thermoplastic resin melt is continuously extruded from the circular discharge port 1 ] 10 and intermittently by adjusting the opening/closing interval of the on-off valve 15 to extrude it intermittently into the annular discharge port 14 as shown in FIG. A yarn material 9 is formed in which the thick portion 7 and the yarn portion 8 are formed.

The intervals at which the melted thermoplastic resin is intermittently pushed out from the annular discharge 14 by opening and closing the on-off valve 15 are appropriately determined in consideration of the desired knot length in the one-piece monofilament.

Next, the yarn material 9 having the thick portion 7 is passed through the cooling tank 16, and is cooled to a state where the surface of the thick portion is solidified but the inside is still warm and soft. Normally, cooling 411. ! Water at 30 to 70° C. is used as the cooling source in No. 16.

Next, the yarn material 9 having thick portions 7 intermittently is passed through a pair of sizing rolls 17, 1'7' to size the thick portions 7. Figure 8 shows a schematic diagram of the sizing roll.
FIG. 9 shows an assembly diagram of the sizing roll. Figure 10 shows
FIG. 9 is an enlarged view of part A of FIG.

The sizing rolls 17, 17' are as shown in FIG.

A large number of protrusions 30 are formed on the outer periphery. Protrusions 31. formed on each roll 17.17'. Ro2 is.

When the rolls 17 and 17' rotate, they are arranged so as to be close to each other with a certain gap 33 between them. What is the size of the void?

Usually 1-2 fins. On the end faces of adjacent protruding grooves 5 in the roll 17, one side edge 6 of the roll and the other side edge 37 are formed.
It is sloped at different angles towards. This slope is 60~1200. Preferably, they are arranged at a 90 angle. The same applies to the roll 17'VC that is paired with this. A filament guide groove 34, 34' is provided at the center of the end surface of the protrusion. Sizing o A
Close to both ends of zl 7+17', side plates 38, 38
' is arranged t1 tail. The yarn material 9 is passed through while guiding the yarn portion 8 to the yarn material guide groove 34, 34' of the sizing roll to obtain an undrawn yarn material 1o.

Next, the undrawn filament 1o is drawn. This stretching is carried out in accordance with a known method, while heating the roll group 1 in a heating tank 2o.
This can be done by changing the peripheral speed ratio between the roll group 9 and the roll group 21. The stretching ratio is usually 2 to 4 times. The stretching temperature is 140 to 280°C.

Furthermore, in order to prevent shrinkage and bending, it is preferable to perform heat treatment in the heating tank 22. The temperature of the heating tank 22 is 140
~260'(:'.

The monofilament with parts thus obtained may be cut by a cutting machine 2, or may be wound as is.

Next, examples and usage examples will be shown.

EXAMPLE Monofilaments were molded using the apparatus shown in FIGS. 6 to 10. From the extrusion die 12, the outer diameter of the circular outlet 1 for forming yarn material is 2 mm, and the outer diameter of the annular outlet 14 surrounding the 1 circular outlet 1''10 is 6 mm.
% relative viscosity of sulfuric acid solution at 25°C (J Engineering 5K68
10-1970) of 6.6 nylon 6 through circular discharge port 1
The nylon 6 is continuously melted and extruded from the annular discharge port 14 for 0.1 seconds, and then melted and extruded intermittently at intervals of 0.7 seconds to form a diameter of 6M+ as shown in FIG.
Thick part 7 with length 15 and diameter 1.55wn + thick part 7
A yarn material 9 consisting of thread portions 8 having a length of 1 ooa was obtained.

Subsequently, the thick portion 7 was formed into the shape shown in FIG. 5 using a pair of sizing rolls 17 and 17'. Furthermore, 180
The yarn 10 was drawn at a draw ratio of 3 times at °C. Thereafter, heat treatment was performed at 200'C. the result,
3 plate-like pieces (10 mrr x 5 mm x 1 tnm)
A monofilament 5 (diameter o, 9 mm + length 10,100 yn) was obtained, in which knots 4 were arranged such that adjacent plate-like pieces intersected at 90 degrees, and a monofilament 5 (diameter o, 9 mm + length 10,100 yn) was obtained.

Usage Example The monofilament with parts obtained in the example was cut at the center of each line and inserted into a hanging line for scallop culture (knitted net with diameters in order of 6), and the scallops were cultured in seawater for 6 months using a rain gauge. However, no knots slipped through the rope.

[Brief explanation of the drawing]

Figures 1 and 2 are diagrams of how monofilament is used in conventional IAft for cultivating scallops, etc. Figure 4 is a schematic diagram of a monofilament with sections 1 and 4, and Figure 4 is a yarn material with a thick section. FIG. 5 is a schematic diagram of an undrawn side yarn product, FIG. 6 is a manufacturing flow chart of the present invention, FIG. 7 is a cross-sectional view of an extrusion die, and FIG. 8 is a sizing roll. Schematic diagram of, No. 9
The figure is an assembly diagram of the sizing roll, and FIG. 10 is an enlarged view of part A of the 9th round sizing/growl assembly diagram. 1.2.3...Small plate-like piece, 4...Node of small plate-like piece, 5
... Monofilament part, 6... Knot + I monofilament, 7... Thick part, 8... Yarn part, 9... Yarn material having thick part, 10... Undrawn Knots (=J thread material 11... Extruder, 12... Extrusion die...
1ro... circular discharge port, 14... annular discharge port, 15.
...Opening/closing valve, 16...Cooling tank, 17.17'...Sizing roll, 19.21...Roll group, 20.
22... Heating tank, 23... Cutting machine, 34.34'.
... Yarn material guide groove patent applicant Ube Industries Co., Ltd. No. 118 Calculation 21 Sword Hayabusa 4 Figure Rod j 0

Claims (2)

[Claims] (1) A monofilament with parts made of thermoplastic resin, consisting of at least six adjacent plate-like pieces, nodes in which the adjacent plate-like pieces are arranged to intersect, and a monofilament connecting each part. . (2) Using an extrusion die equipped with a circular outlet for forming a filament and an annular outlet surrounding the circular outlet. Thermoplastic resin is continuously extruded from two circular discharge ports and intermittently from an annular discharge port to form a thread having thick sections intermittently, and a number of protrusions are formed on the outer periphery. The protrusions formed on each roll are arranged so as to be close to each other with a certain gap between the end faces of the protrusions when the rolls rotate, and the end faces of adjacent protrusions on each roll are The roll is sloped at different angles from one end to the other. A method for producing a monofilament with parts, which comprises passing the above-mentioned thread having a thick part through a sizing roll having a thread guide groove provided at the center of the end face of the protrusion, and then drawing it.