JPH04146272A - Warp sizing method - Google Patents

Abstract

PURPOSE:To eliminate drying process and remarkably reduce energy consumption by attaching a sizing agent to warp and then applying a specific pattern- releasing composition to the warp in warp sizing of synthetic fiber filament. CONSTITUTION:In warp sizing of a synthetic fiber filament, a well-known sizing agent is attached to a warp and then pattern-releasing composition, e.g. a composition consisting of one or two or more kind of compounds selected from a group composed of a mineral oil, wax, oil and fat, fatty acid, fatty acid ester and higher alcohol and nonionic and/or anionic surfactant and water is applied to the surface of the above-mentioned warp. Thereby yarn separation between yarn and yarn is improved and drying process can be eliminated and energy consumption is remarkably reduced and weaving productivity is remarkably improved without inducing fluffing.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a warp sizing method that eliminates drying.
More specifically, the present invention relates to a warp sizing method in which a drying step can be omitted by applying a release composition after adhering a sizing agent to warp yarns in a synthetic filament weaving preparation process.

J Prior Art] In general, in the preparation process before weaving synthetic filament yarns, a sizing agent mainly composed of resin such as acrylic resin is used for sizing to impart bindability and convergence to the warp threads. . Warping sizers, roller sizers, beam sizers, etc. are used as sizing machines, and after applying a sizing agent to the warp threads, they are heated and dried to create sizing threads.
It is woven using these warp threads. This method has the problem that a huge amount of energy is required in the drying process, and the sized warp yarns undergo heat shrinkage due to heating in the drying process, and the heat shrinkability imparted in the yarn manufacturing process is lost.

As a method for solving the above problems, a sizing method that improves the drying efficiency in the drying process or a sizing method that omit the drying process has been proposed. For example, a method is known in which the drying efficiency is improved by adjusting the amount of glue attached (Japanese Patent Application Laid-Open No. 63-282377).

Another method is to apply a sizing liquid mixture of an acrylic ester, methacrylic ester copolymer sizing agent and a wax emulsion with a melting point of 50 to 100°C to the warp yarns, and omit the subsequent drying process for sizing (specially Kaisho 60-2858
Furthermore, there is also known a method (Japanese Unexamined Patent Publication No. 48-96890) in which an aqueous emulsion containing a vinyl polymer is used as a sizing agent and sizing can be carried out even when undried.

[Problem to be solved by the invention]

However, in the aforementioned method of improving drying efficiency by adjusting the amount of adhered glue, a drying step is required and the drying energy cannot be significantly reduced. Furthermore, in the sizing method in which the drying step is omitted and in the undried sizing method, starch particles adhere to guide rolls and the like during sizing, causing fuzzing and reducing weaving properties. Furthermore, problems such as reduced productivity arise due to the time required for cleaning the glue scum.

From the above, the current situation is that there is no warp sizing method for synthetic fiber filaments that can omit the drying step and that does not reduce weavability.

The present invention has been made in view of the above points, and does not have the problems of the warp sizing method of the prior art described above.
That is, it is an object of the present invention to provide a warp sizing method that can maintain the heat shrinkability of raw yarn without requiring a drying process and can further improve productivity.

[Means to solve the problem]

The present inventors have investigated the adhesion to synthetic filament yarns, the releasability of the sized yarn surface, and the adhesion of glue scum.
As a result of intensive research, the present invention was completed by discovering a sizing method that can omit heat drying after sizing and does not allow glue residue to adhere to the guide roll.

That is, the first invention is characterized in that, in the warp sizing method in the weaving preparation process for synthetic filament yarns, after adhering the sizing agent to the warp, a mold release composition is continuously applied. That is, in the sizing method of the present invention, for example, as shown in FIG. The sizing is applied to the yarn using a releasable composition, and the yarn is further wound up using a guide roller 3 and a weaving beam 4.

The sizing agent imparts convergence and binding properties to the yarn, and may be a water-soluble resin such as a water-soluble acrylic resin, or a composition prepared by mixing a wax emulsion in a ladle to improve the smoothness of the yarn. Conventionally known sizing agents can be used. The method for attaching the sizing agent to the yarn can be carried out, for example, by using the sizing agent applying roller 1 or the like immersed in a container containing the sizing agent.

The amount of this glue attached to the thread is suitably in the range of 1 to 7% by weight. If the deposited amount is less than 1% by weight, convergence will be insufficient and weaving performance will be poor, and if the deposited amount exceeds 7% by weight, drying will be insufficient and blocking within the weaving beam will become significant.

The shape-releasing composition imparts shape-releasing properties to the surface of the yarn when sizing is applied, and has the effect of preventing adhesive residue from adhering to guide rollers and the like. Furthermore, it also has the effect of improving yarn grouping between yarn systems and preventing blocking within the weaving beam.

As shown in the second invention, this mold release composition includes one or more compounds selected from the group consisting of mineral oil, wax, fat, fatty acid, fatty acid ester, and higher alcohol, and a surfactant. and water.

As the mineral oil, petroleum-based mineral oils such as spill oil and machine oil can be used.

Waxes include natural and synthetic hydrocarbon waxes,
Mention may be made of glycerides and waxes as well as their oxides and acid modifiers. Natural waxes include beef tallow or lard, hydrogenated hydrogenated oil, beeswax, hydrogenated spermaceti wax, carnauba wax, camphoria wax, wood wax, bran wax, and other animal and vegetable waxes, paraffin wax, microcrystalline wax, and montan wax. , mineral wax such as sericin wax, and the like.

In addition, synthetic waxes include low molecular weight polyethylene wax, polypropylene wax, α-olefin,
Examples include wax produced by the Fischer-Tropsch method.

As the oil and fat, beef tallow, pork fat, whale oil, etc. can be used. Examples of fatty acids include straight-chain saturated fatty acids such as caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, and behenic acid, and straight-chain monoenoic acids such as oleic acid. I can do it. In addition, as the fatty acid ester, 1 of the above fatty acids
Examples include alcohol esters (methyl, ethyl, butyl, hexyl) and glycerides (mono, di, tri). Further, examples of higher alcohols include lauryl alcohol, myristyl alcohol, stearyl alcohol, and oleyl alcohol.

In addition, as a surfactant that is a component of the mold release composition,
Nonionic surfactants and/or ionic surfactants are suitable.

20 Nonionic surfactants include sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, propylene glycol pentaerythritol fatty acid ester, polyoxyoxyethylene sorbitan fatty acid ester, polyoxynitylene sorbitan fatty acid ester, Polyoxyethylene glycerin
llboric acid ester, polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene castor oil (hardened castor oil), polyoxyethylene lanolin (lanolin alcohol), polyoxyethylene beeswax derivative, polyoxyethylene alkyl amine, Examples include polyoquine ethylene alkylphenyl formaldehyde condensates, polyoquine ethylene pentaerythritol fatty acid esters, polyoxyethylene fatty acid amides, fatty acid alkanolamides, and the like.

Examples of anionic surfactants include Na and K salts such as alkyl sulfonates, alkyl sulfates, alkyl carboxylic acids, and alkylbenzene sulfonates.

The amount of adhesion of the mold release composition of the present invention to threads is 0.1 to 0.1.
A range of 5.0% by weight is suitable. This amount of adhesion is O,1
If it is less than % by weight, the effect of preventing glue scum from adhering will be small, and the effect of preventing blocking within the weaving beam will be insufficient. On the other hand, if the adhesion amount exceeds 5.0% by weight, the adhesive scum prevention effect,
The anti-blocking effect reaches saturation, and excessive adhesion not only becomes uneconomical, but also causes wax to fall off on the loom and clogs the reed! ! This is because poor weaving occurs.

In addition to the above-mentioned components, the mold release composition of the present invention may appropriately contain an antistatic agent, a penetrant, a binder, an antifoaming agent, a preservative, and the like.

〔Example〕

Hereinafter, the present invention will be specifically explained with reference to Examples and Comparative Examples.

The table shows the results of evaluating the adhesion of starch on the guide roller, the presence or absence of blocking of the weaving beam, and the weaving efficiency when synthetic filament yarn was sized using the apparatus shown in Figure 1 under the following conditions.

In addition, in the table, the evaluation of the adhesion of glue scum on the guide roller is indicated as ◎: No glue scum adhering, ○: No amount of glue scum adhering, △: Too much glue scum adhering, ×: Significant amount of glue scum adhering. . Further, the evaluation of the blocking of the weaving beam is shown as ◎: no blocking, ○: little blocking, △: a lot of blocking, and ×: extremely high blocking.

[Sizing conditions]

(1) Raw yarn; polyester filament type (SD50d
/36f) (2) Gluing speed: 200 m/min (3) Sizing agent: Product name “Tsurugam Z27J C Yunro Chemical Industry Co., Ltd.”
Niacrylic glue, composition: 25% acrylic resin, 75% water] and product name: Solbilfuchs 5H46=
C Yushiro Chemical Industry Co., Ltd.! ! Wax emulsion, composition: 20% wax, 10% surfactant, 70% water
2, the solid content concentration is 20%, the solid content ratio is...
=7: A solution adjusted so that it becomes 3.

(4) Mold release composition; A: Trade name [Tsurubil wax AW308J [manufactured by Yushiro Chemical Co., Ltd.: oil agent, composition: 40% wax, 40% mineral oil, 20% water] B': Product name r Tsurubiru Oil KR88J (manufactured by Yushiro Chemical Industry Co., Ltd.: Oil agent, composition: 80% mineral oil, 20% surfactant) (Hereinafter, blank) As is clear from the results in the table, a release composition was used. Examples 1 to 4, which were sized according to the method, exhibited excellent weaving efficiency of 98% or more without adhesion of starch residue or blocking.

On the other hand, in Comparative Example 1, in which no mold release composition was used, the amount of adhesive adhesion was small, and the adhesion of glue scum and blocking were relatively small, but the convergence was insufficient and the fabric was fluffy. In Comparative Example 2, although the convergence was good, there was a lot of fuzz due to the adhesion of starch residue, making it impossible to weave. Furthermore, in Comparative Example 3, adhesion of glue scum and blocking were significant, making it difficult to pull out the yarn from the beam.

[Effects of the Invention] The sizing method of the present invention can significantly reduce energy costs and maintain the heat shrinkage properties of the yarn by omitting the drying step and applying a mold release composition after pasting. I can,
Furthermore, there is no or little glue scum adhering to guide rolls, etc., it does not cause fluffing, and there is no need to clean the glue scum! ! Weaving productivity can also be significantly improved.

[Brief explanation of drawings]

The figure is an explanatory diagram showing an overview of this sizing method. 1; adhesive application roller, 2; release composition application roller, 3;
Guide roller, 4. Weaving beam, 5. Sizing agent, 6. Release composition, 7. Warp patent applicant Yushiro Chemical Industry Co., Ltd. Agent
Patent attorney Kiyoji Kojima

Claims (2)

[Claims] (1) A warp sizing method in the weaving preparation process for synthetic filament yarns, which is characterized in that a sizing agent is attached to the warp, and then a release composition is applied, and the drying step is omitted. (2) The mold release composition may include mineral oil, wax, oil or fat,
The warp sizing method according to claim 1, comprising one or more compounds selected from the group consisting of fatty acids, fatty acid esters, and higher alcohols, a surfactant, and water.