JPH04163336A - Preparation of warp - Google Patents

Abstract

PURPOSE:To carry out the preparation of warp in high efficiency by interlacing a thermoplastic synthetic fiber multifilament yarn to a specific interlocking number, applying a water-soluble sizing composition to the yarn with a direct warper and winding the yarn on a direct warping beam under drying with air flow. CONSTITUTION:A thermoplastic synthetic fiber multifilament yarn interlaced to an interlocking number of 10-60/m is supplied from a stock yarn bobbin 1, passed through a take-up roller 2, arranged in the form of a sheet, supplied to a direct warper, coated with a water-soluble sizing composition by contacting with a sizing roller 4, passed through a metering roller 6 while being dried at room temperature with air flow blasted from a blasting valve 9 connected to a blower before the yarn reaches a guide reed 5 and wound on a direct warping beam 8 to enable the preparation of weaving warp in high efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to a method for preparing warp threads, and more particularly, to a method for preparing warp threads in which warp threads are directly wound around a beam for weaving in a warping process. It is something.

[Prior art] Conventionally, when the warp yarns used in shuttled looms and shuttleless looms are non-twisted yarns, they are usually passed through a warping process, a gluing process, a beam minking process, and then wound onto a beam for weaving. Among the darning processes, the sizing process has the lowest productivity.In other words, in the sizing process, the thread transport speed is reduced to dry the sizing thread. It was a problem that a large amount of thermal energy was consumed for drying, which caused hair lumps in the varnish.For this reason, if the gluing process could be omitted in the warping process, it would be possible to significantly shorten the time and save energy. As such, a method of warping without glue using twisted or interlaced warp threads has been proposed. Furthermore, due to the increased density of textiles and the diversification of the yarns used, even if twisted or interlaced textiles are conveniently used, there are cases where the efficiency of the weaving process is lowered if the weaving process is performed without glue.

To solve this problem, a method has been proposed in which the synthetic fiber filament yarn is sized and then wound and woven without drying, as described in Japanese Patent Application Laid-open No. 60-28583. If the glue is used without drying, glue scum will accumulate on the guides through which the threads pass, damaging the quality of the threads passing through and causing problems such as fluffing of the threads. In addition, when interlaced yarns are used, the entangled portions are not released during weaving due to sizing, and most of the interlaced portions remain in the fabric, and in fabrics using filament yarns for the warp and weft, This is undesirable as it causes minute gloss spots in the warp direction and irritation.

[Object of the Invention] An object of the present invention is to provide a method for manufacturing warp yarns, in which a water-soluble glue composition is attached during warping with a direct warper using interlaced yarns, and the warp yarns are directly wound onto a beam for weaving. It's about doing.

"Structure of the Invention" The present invention provides a thermoplastic synthetic fiber multifilament yarn interlaced with a number of entanglements in the range of 10 to 60 g/m to a Directrec I-warper to adhere a water-soluble glue composition, The warp preparation method is characterized in that the sized yarn is directly wound around a weaving beam while being blown and dried at room temperature, and the water-soluble sizing composition is preferably an acrylic ester sizing agent. A preferred example is one in which an acrylic ester adhesive is mixed with a wax emulsion.

FIG. 1 is a process diagram showing an example of the step of applying a water-soluble glue composition using a direct warper, which is performed in the method of the present invention.

In FIG. 1, yarns supplied from a large number of yarn bobbins 1 are arranged in a sheet shape after passing through a pick-up roller 2.
Glue is applied when it comes into contact with the glue roller 4 and is transferred. The glued sheet-like yarn passes through a blower pipe 9 connected to a blower (not shown) before reaching the guide reed 5.
It is dried by the air blown out. The blower pipe 9 is installed across the width direction of the sheet-like yarn, and the blower pipe 9 has a slit formed opposite to the sheet-like yarn, and is capable of blowing air through the slit. Next, the sheet-like yarn leaving the guide reed 5 passes through a sub-length roller 6 and is wound around a weaving beam 8.

7 is a press roll. The air sent out from the blower does not need to be heated; instead, air at room temperature is used.

The yarn used in the present invention is an interlaced thermoplastic synthetic fiber multifilament yarn, which has been interlaced by a known method, and the number of interlaces is in the range of 10 to 60 yarns. used. If the number of entanglements is less than 10 ge/m, the threads will not have sufficient convergence and cannot be woven;
If it exceeds m, entanglement due to interlace yarns will remain in the woven fabric, which is not preferable. Further, it is preferable to use a single filament denier of 1 denier or more of the filaments constituting the thermoplastic synthetic fiber multifilament yarn.

If the single yarn denier is less than 1 denier, the number of single yarns constituting the multifilament yarn increases and the dry efficiency may not be sufficient, which is not preferable.

The water-soluble a+tJl composition used in the present invention is a mixture of acrylic ester and/or methacrylic ester of an aliphatic alcohol having 1 to 24 carbon atoms in an amount of 75 to 92% by weight, and acrylic acid and methacrylic acid. l! The essential components are dicarboxylic acid, dicarboxylic acid combined with oxyacid having one hydroxyl group and one carboxyl group, and polyethylene glycol for 80 to 99.9% by weight of monomer consisting of 125 to 8 weight percent. Diols or their ester-forming derivatives are reacted by adding at least one of phosphoric acid, pyrolic acid, polyphosphoric acid, phosphorous acid, and methanesphonic acid, and then reacted with at least one of alkali metal hydroxide, aqueous ammonia, and alkanolamine. Add 20 to 0.1% by weight of a neutralized water-soluble polyester resin and carry out solution polymerization in a hot medium of an aliphatic alcohol having 1 to 3 carbon atoms or an aliphatic alcohol having 1 to 3 carbon atoms and water. Molecular weight 5-1
00,000 is preferably used), and then neutralized with at least one of alkali metal hydroxide, aqueous ammonia, and alkanolamine.

In the above, examples of the acrylic ester of an aliphatic alcohol having 1 to 24 carbon atoms and Nisdel methacrylate include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, octyl, 2-ethylhexyl, lauryl, There are acrylic esters and methacrylic esters such as mystyl, cetyl, stearyl, araquinyl, and tetracozanol. In addition, heavy substances copolymerizable with the above monomers, such as vinyl acetate, vinyl propionate, styrene, acrylamide,
methacrylamide, tiacetone acrylamide,
It does not limit the copolymerization of acrylonitrile, methacrylonitrile, cyclohexylmethacrylate, and the like. Further, the dicarboxylic acid for producing the water-soluble polyester resin 1:1 in the above may be aliphatic, alicyclic, or aromatic. Examples of such dicarboxylic acids are oxalic acid, malonic acid, dicarboxylic acid, succinic acid, cultaric acid, adipic acid, pimelic acid, mazelaic acid,
These include sebacic acid, fumaric acid, maleic acid, itaconic acid, phthalic acid, terephthalic acid, and isophthalic acid. In general, dicarboxylic acids include acid hydrates, esters, and acid chlorides of the acids listed in item 1 above. The oxyacid may also be aliphatic or aromatic; examples of such oxyacids include m, p-oxybenzoic acid, glycolic acid, lactic acid, human 17-oxyacrylic acid, salicylic acid, madenic acid. , l-loppaic acid, β-hydroxyethyl terephthalate 1-, and the like. Further, the diol includes polyethylene glycol as an essential component, and this can be used in combination with aliphatic, alicyclic, and aromatic diols. Examples of such diols are polypropylene glycol, ethylene glycol, polypropylene glycol,
1.3-propanediol, 1,3-butanediol,
1.4-butanediol, L5-bentanediol, 1
．． 6-hexadiol, 4,4-methylene Schiff]-2-
2,5-naphthalene diol, ethylene carbonate, etc.

Furthermore, in the present invention, 25 to 75% by weight of the modified water-soluble acrylic adhesive has a melting point of 50'C or higher and a genification value of 10.
A wax emulsion consisting of natural waxes and/or synthetic waxes having a weight of 75 to 25% may be mixed. Natural waxes include carnauba wax, candelilla wax, beeswax, white wax, montan wax, bran wax, etc. Synthetic waxes include oxidized polyethylene wax, oxidized wax,
Examples include sourbitane, pentaerythritol, glycerin, and waxes obtained by esters of ethylene glycol and aliphatics having 14 to 24 carbon atoms. Note that for the emulsification, ordinary nonionic activators and anionic activators may be used.

Further, the water-soluble sizing agent is adjusted to be applied in an amount of 0.1 to 5% by weight based on the total amount of warp yarns.

[Effects of the Invention] Since the method of the present invention has the following configuration, the drying process in the conventional weaving preparation process can be omitted, improving production efficiency. That is, in the present invention, since the water-soluble glue composition is used as described above, the problems that have occurred in the conventional drying process, especially the generation of glue scum in the warping machine and the filament 1.
Problems such as fixation in the beam of ~, opening during manufacture] and occurrence of defects are solved. In addition, problems such as minute defects in the warp direction and the risk of cracking that occur when an interlaced yarn having entangled portions is used as the warp yarn and sizing is applied to the warp yarn do not occur. In the woven fabric, the number of residual interlace entanglements of the threads constituting the #A material is 5 or less per meter, and the drawbacks caused by this are greatly improved.

Furthermore, in conventional sizing processes, sizing agents with a molecular weight of 150,000 to 300,000 are used, and a scouring process is required. Therefore, there is no need for a special scouring process, and it can be carried out during the dyeing process in the same way as warp-less woven fabric.

[One example] Polyester multifilament da/20f for warp
Mli) with interlacing with a number of entanglements of 50ge/1η was used, and the weft was polyester multifilament yarn (75de/36fil) in a waterjet I-room. In doing so, in the step shown in FIG. 1, 1.0% by weight of a sizing agent having the components shown below was applied to the warp threads.

[Sticker content] A, water-soluble polyester resin Terephthalic acid 5 parts Isophthalic acid 25 parts Polyoxyethylene glycol 50 parts Ethylene glycol
55 parts phosphorous acid
8 parts B, acrylic ester type sizing agent Ethyl acrylate 20 parts Butyl methacrylate 3 parts Methyl methacrylate 25 parts Lauryl methacrylate
13 parts acrylic acid
7 parts methacrylic acid 5 parts
11~C, Wax emulsion carnauba wax 40 parts Ruderilla wax 30 parts Motan wax
5 parts polyoxyethylene lauryl ether 10 parts polyoxyethylene oleyl ether 10 parts sorbitan monooleyu 1 to 5 parts Warp density: 144/3, 7
9cn+, weft density = 115 threads/379CI11 - ZIll-300 type manufactured by Tsudakoma Industries Co., Ltd. was used as the target loom; rotation speed: 700
Weaving was carried out at a speed of r, pn+. The number of times the weaving machine stopped was investigated as weaving efficiency, and the efficiency was comparable to that of conventional weaving using glued warp threads. The number of entanglements of the threads constituting the obtained woven fabric was Oge/m, and a high quality woven fabric was obtained with no irregularities observed on the surface of the woven fabric.

As Comparative Example 1, plasticize J-5, which is a conventional glue, was used.
(manufactured by Gōhō Kagaku Co., Ltd.), using the same warp and weft as in the example, and the same loom. The fabric obtained was Iran A, and the quality of the fabric was not satisfactory.

In addition, as Comparative Example 2, a straight oiling agent: Cytex S-571 (manufactured by Gooh Kagaku Kogyo Co., Ltd.) was used instead of the sizing agent, the same warp and weft as in the example were used, and the same loom was used. Woven by. Although the quality of the obtained m'$A was somewhat satisfactory, the weaving operation rate was poor and it could not be adopted for industrial production.

Table 1 4, Figure m16)) Premature Explanation FIG. 1 is a process diagram showing an example of the step of depositing the water-soluble a composition with a direct weaver, which is carried out in the method of the present invention.

Claims (2)

[Claims] (1) Thermoplastic synthetic fiber multifilament yarn interlaced with a number of entanglements in the range of 10 to 60 yarns/m is fed to a direct warper, a water-soluble glue composition is applied, and the sized yarn is kept at room temperature. A warp preparation method characterized by winding directly onto a weaving beam while drying with air. (2) The method according to claim 1, wherein the water-soluble glue composition is an acrylic ester glue, and the acrylic ester glue is mixed with a wax emulsion.