JPS59223381A - Dyeing method of synthetic polyamide knotless fishing net - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for dyeing synthetic polyamide knotless fishing nets. More specifically, the present invention relates to a method for dyeing knotless fishing nets made of synthetic polyamide with improved level dyeing, prevention of flicker, and improved durability and light resistance.

In recent years, most fishing nets are knitted from synthetic polyamide fibers,
Furthermore, knotless meshes are now more commonly used than knotted meshes. Knotless netting has become widely used because it requires less material than knotted netting, is less bulky, and has excellent durability.However, in terms of dyeability, it has uneven dyeing. It also has drawbacks such as the need for long-term dyeing in order to remove uneven dyeing.

At present, synthetic polyamide knotless fishing nets can be manufactured using direct dyes, acid dyes, etc. using open or pressure-type Obermeyer dyeing machines in combination with leveling dyeing auxiliaries to streamline the process to low bath ratios, e.g. around 1:10. Uniformly dyed products are obtained using dyes such as dyes and disperse dyes. However, synthetic polyamide knotless mesh does not yield a level-dyed product using conventional dyeing methods that are advantageous for knotless mesh, and flickers are noticeable, especially when the mesh is stretched in the lengthwise direction. These drawbacks become more pronounced as metal complex dyes are used as dyes, the bath ratio is lowered, and leveling agents are used more frequently in order to impart fish oil resistance and light resistance to dyed fishing nets. Therefore, in order to improve these shortcomings, the bathing ratio low temperature method is needed.

The current situation is that a large amount of leveling agent is used by the pressure method, etc., and in addition, dyeing methods that are disadvantageous and take a long time are used, but it has not been possible to obtain sufficiently satisfactory results.

Furthermore, when a direct dye and a disperse dye are used, dyed fishing nets with relatively good level dyeing properties can be obtained, but the results are unsatisfactory in terms of fish oil resistance and light resistance. The present inventors have arrived at the present invention as a result of intensive research in view of the above circumstances. That is, an object of the present invention is to provide a novel dyeing method for synthetic polyamide knotless fishing nets that is advantageous in terms of workability and economy.Other objects of the present invention are to provide a method for dyeing synthetic polyamide knotless fishing nets that is advantageous in terms of workability and economy. The objective of the present invention is to provide a synthetic polyamide knotless fishing net, which consists of applying a dye solution containing complex salt dye to gold and dimethyl sulfoxide to the synthetic polyamide knotless fishing net, followed by continuous dyeing by steaming.

The synthetic polyamide knotless fishing net used in the present invention is made by twisting raw threads to form silk threads, and then combining each child of two adjacent mesh threads necessary to form a mesh. For example, a through type, a staggered type, a tortoise shell type, etc. may be used, but there are no particular limitations on the length, thickness of the mesh threads, number of strands, eyes, width and length of the mesh.

The dye solution used in the present invention is an aqueous solution containing a metal complex dye and dimethyl sulfoxide (hereinafter abbreviated as DMSO), and in addition to other additives that have been conventionally used in the dyeing of synthetic polyamide 1 fiberless fishing nets. Agents 1 For example, leveling agents, solubilizing agents, etc. may be added as long as they do not interfere with the purpose of the present invention.
1. Metal ions such as cobalt, nickel, and copper are fl
It is a soluble azo dye which is bound in the form of a salt, and here refers to a dye which is already converted into a metal complex salt in the second step of dye production, and has the ability to form a salt. , o″-dihydroxyazo, 0-hydroxy-〇′-aminoazo.

0-Hydroxy-〇'-carboxyazo dye is dyed by FT, and can be dyed from a weakly acidic to neutral bath.2
: Type 1 complex salt dye is preferred. Specifically, for example, Neo
an dye, Platin Fast; dye, Irga
lan dye, lan y I dye, Kayakal,
Examples include an dye and the like.

Metal complex dyes can be dissolved in water using conventional methods, but
The amount and concentration of the supporting liquid are not particularly limited. It is sufficient to have a liquid volume and concentration that is advantageous for continuous dyeing, 10~]
A concentration of 00 g/l is preferred. DMSO is colorless, almost odorless, non-toxic, and non-corrosive, so it can be used safely and can be added to an aqueous metal complex dye solution in any proportion to form a homogeneous solution.

The amount of DMSO that best exhibits the effects of the present invention is 100 to 300% by weight based on the metal complex dye, and preferably 20 to 50 g/l based on the amount of water. Especially for water 100
Caution must be taken as concentrations exceeding g/l are not only unnecessary, but may also have an undesirable effect on the post-treatment of fishing nets.

The dyeing method of the present invention will be explained below.

An undyed synthetic polyamide knotless fishing net is fed out from a rod and introduced into a dye solution tank, allowed to pass through the dye solution tank, and is picked up with a mangle while squeezing out excess dye solution. The dye solution application rate is determined by the dye solution concentration and the dyeing concentration of the dyed object, and the pick-up rate is 20 to 80%, preferably 25 to 40%.

If the amount is too high, not only will a large amount of heat be required during steaming, but also condensed water from the excess liquid will flow on the surface of the fabric, impairing level dyeing.

``Flicker'' as referred to in the present invention is a phenomenon in which a difference in shade is observed locally when a dyed net is stretched, and is thought to be caused by uneven dyeing.

The net coated with the dye liquid is then led to a steaming chamber, where the temperature is rapidly raised by atmospheric saturated steam, and the screen is allowed to stay there for the time necessary for the dye to fix. Alternatively, undyed dyes are removed by washing with water in a normal manner, and if necessary, a resin finishing agent, softener, antistatic agent, etc. are applied, and then the material is introduced into a drying room and dried.

According to the dyeing method of the present invention having such a configuration.

Because metal complex dyes can be used in synthetic polyamide knotless fishing nets at the desired bath ratio, it is possible to economically obtain dyed fishing nets with high fastness and excellent level dyeing properties, and the conventional flicker is completely eliminated. .

The present invention will be explained in detail below with reference to Examples, but the present invention is not limited thereto.

Examples 1 to 4 Preparation of padding bath The dye in the amount shown in Table 1 (parts by weight, the same applies hereinafter) and DMSO are thoroughly mixed and dissolved by adding about 500 parts of hot water.

Further water is added to bring the total amount to 1000 parts, and 0.5 part of acetic acid is added. It is preferable to add acetic acid just before starting dyeing.

The dyed and temporarily warped nylon knotless fishing net was continuously padded in the padding bath prepared earlier, squeezed at the pick-up rate shown in Table 1, and then introduced into a normal pressure steamer and steamed for 10 minutes. The fishing net was then lightly washed with water and dried. the color of fishing nets,
Table 1 shows the results of level dyeing, flicker and sardine oil durability tests.

Comparative Example 1 A nylon knotless fishing net was prepared under the same conditions as in Example 1 without using DMSO.
It3BO (2:1 type metal manufactured by Sumitomo Chemical Co., Ltd.)
Table 1 shows the results of continuous dyeing 1 with salt dye).

Comparative Example 2 Table 1 shows the results of using a nylon knotless fishing net under the same conditions as in Example 1 except that benzyl alcohol was used instead of 11M SO, and continuous staining with any I Brown 3BO.

From the results in Table 1, it can be seen that the method of the present invention evenly dyes nylon knotless fishing nets in a beautiful deep shade color, with no flicker observed, and is excellent in durability tests 1 to 1.

Comparative Examples 3-4 20 parts by weight of Lanyl Brotyn 3BO and DN
40 parts by weight of S0 was dissolved in hot water, and nylon knotless fishing nets were dyed in dye baths with bath ratios of 1:10 and 1:40 using an Obermeyer in a conventional manner.

As a result of the dyeing, the level dyeing was good with some slight staining, but the flicker when the fishing net was pulled was not resolved, and the internal dyeing of the nodules was poor, and the sardine oil durability was slightly inferior.
) Comparative Example 5 Using Sumikaron Brown S-5RL (disperse dye manufactured by Sumitomo Chemical Co., Ltd.), nylon was knot-free using a high-temperature dyeing method by dip dyeing under the following dye bath conditions according to a conventional method. The ih omentum was stained.

Dye bath Dye 3.0% (0, S, f) Sumibon TF 1. /1 115 Bath ratio 1:30 As a result of dyeing, the dyed net showed good level dyeing property, but showed insufficient results in terms of light fastness and sardine oil durability.

\

Claims (1)

[Claims] 1. A method for dyeing synthetic polyamide knotless fishing nets, which comprises applying a dye solution containing a metal complex dye and dimethyl sulfoxide to the synthetic polyamide knotless fishing nets, followed by continuous dyeing by steaming.