JPH0241474A - How to glue filament yarn - 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 (Industrial Application Field) The present invention relates to a method for sizing filament yarns that is easy to produce in small lots and that improves process passability of yarns with poor cohesiveness.

(Prior Art) As the sizing agent used for sizing filament threads, water-based sizing agents are mainly used because they are easy to handle. Among these, acrylic ester copolymers are widely used as resin components in sizing agents for polyester fibers, acetate fibers, rayon, etc. because they have an excellent balance of performance as sizing agents, such as scouring properties and film flexibility. .

However, due to the limitations of the drawing technique, the time required for gluing was approximately 90%.
Improving the efficiency of the drying process is a major challenge since it is necessary to create a size liquid that contains water.

As a typical example of improving the size agent itself for the purpose of omitting this drying process, Japanese Patent Publication No. 61-25831 discloses a method in which a water-based size agent containing a large amount of wax component is applied to yarns and weaving is performed without drying. However, in practical use, there are unresolved issues such as the so-called gum-up phenomenon, in which sizing agent adheres to the heddles and reeds and reduces weaving efficiency.

On the other hand, with regard to improvements in drying methods, although methods that use high frequencies have been put into practical use, there are major limitations in terms of capital investment. Therefore, methods using hot air and/or heating cylinders have become mainstream, but these methods require large-scale equipment to accommodate the recent small-lot production.

Sizing methods suitable for small-lot production include the well-known method of gluing a single thread on a roller and winding it into a general shape while drying it in a drying room, or drying it in a small drying room and then drying it in a small drying room. There is a way to roll it into cheese. However, the former has a problem in temperature controllability, and the latter has a problem in that it requires new investment.

(Problems to be Solved by the Invention) The object of the present invention is to provide a method for sizing filament threads that can use existing equipment and is suitable for small-lot production.

(Means for Solving the Problems) The present invention provides a water-based sizing agent containing an acrylic acid ester copolymer as a resin component, in which 15 to 30% by weight of the sizing agent is wax. The method for sizing filament yarns is characterized in that after sizing the filament yarns, the yarns are wound up without drying, and then dried under reduced pressure in a temperature range of 60 to 110°C.

The aqueous sizing agent used in the present invention has an acrylic ester copolymer as its main resin, and contains surfactants to facilitate its dispersion into thin ice. It can be dispersed and used in liquid form.

In the present invention, the sizing agent components other than water are used as a sizing agent containing wax in an amount of 15 to 30% by weight based on the sizing agent pure component. If the wax content is less than 15% by weight, the filament yarns will adhere to each other, resulting in a so-called blocking phenomenon, and if the wax content exceeds 30% by weight, the binding force as a sizing agent will be weak and the filament threads will stick together during weaving. This results in the weaving becoming impossible.

In the present invention, such a water-based sizing agent is dispersed in water to a concentration of about 10%.
Using a weight-based sizing solution, glue is applied to the filament thread by contacting the roller surface in contact with the sizing solution using a commonly used warber.
A range of 8% by weight is preferably used. The glued filament yarn is wound onto a beam without drying out.
It is dried under reduced pressure of about 720 m of mercury while heating the vacuum can wall in a vacuum setter in a beam state. The temperature during vacuum drying is 60 to 110°C, preferably 65 to 75°C, and the treatment is carried out for about 30 to 40 minutes. If the temperature is less than 60°C, drying takes a very long time, and if it exceeds 120°C, adhesion between filament threads, a so-called blocking phenomenon, occurs. The filament yarn after drying under reduced pressure is woven according to a conventional method.

As mentioned above, in the vacuum drying of the present invention, 60 to 11
Because it is dried in a temperature range of 0°C, it is preferable to use filament yarns where fluctuations in shrinkage rate during drying are undesirable, such as mixed yarns with different shrinkage that combine filament yarns with partially or totally different shrinkage rates. Sizing can be dried at low temperatures, and the present invention is particularly preferably applied to differential shrinkage mixed fiber yarns of polyester filaments.

According to the present invention, by containing wax in an amount of 15 to 30% by weight based on the pure size and drying under reduced pressure at a temperature of 60 to 110°C, the beam-shaped filament yarn after drying under reduced pressure is formed into a beam. The inner and outer layers of the fabric are dried in a uniformly sized state, and with such sizing, the filament yarn can be woven without any trouble.

Preferred filament yarns in the present invention include the aforementioned polyester filament yarns and acetate filament yarns.

(Example) The present invention will be explained below using examples.

Example 1 A sizing agent was prepared by changing the composition of an aqueous sizing agent containing an acrylic acid ester copolymer as a resin component as shown in Table 1.

Table 1 These glues were dispersed in water to form a glue solution with a concentration of 10% by weight. Semi-dull polyester filament yarn 48 as supplied raw yarn
106 d/24 f drawn yarn with water conduction shrinkage rate of 9 yen
Four yarns were placed one on top of the other, and the yarn speed was 250 m while the filament yarn was in contact with the surface of a roller with a diameter of 100+ m that was in contact with the sizing solution using a non-heki wooden machine KDWT16SSB warber with a drying area as a sizing machine. Thread length 1100 (1
was wound onto a beam. The adhesive weight and moisture content at this time were as shown in Table 1.

The amount of glue attached was calculated from the weight after drying after treatment at 85° C. for 40 minutes with a solution containing 3 parts by weight of soda ash and 5 parts by weight of nonionic surfactant. Moreover, the moisture content was calculated according to J Engineering 81073. The beam wound up with a warber is heated to 720n of mercury while heating the can wall to 100℃ in Nichiyo Kogyo's Nashi vacuum setter.
The mixture was dried for 30 minutes at m. After repeating this twice, it was taken out from the setter and made into a lume beam using Tsudakoma Kogyo's KB-10, and then the warp density was 75/2 threads/whale size.
Type 1, reed width 135cr11, rotation speed 350 rp
It was woven with m.

As a result, under conditions 2 and 3 in Table 1, the innermost layer was slightly damp during beaming, but weaving was possible without any problems. However, under condition 1, a blocking phenomenon in which the threads adhered to each other occurred, and weaving was stopped. In addition, under condition 4, the binding force of the glue was weak and filamentation occurred during weaving, making it impossible to weave normally.

Example 2 Example 1 was carried out under the same conditions as in Example 1 except that the sizing agent of Condition 3 in Example 1 was used and the can wall temperature of the vacuum set during vacuum drying was changed in the range of 60 to 120°C. When the beam taken out from the vacuum setter has a can wall temperature of 60°C, water droplets form on the beam flange, and the yarn near the flange gets wet.
℃, a blocking phenomenon was observed due to adhesion caused by the resin, but when drying under reduced pressure in the temperature range of 65 to 110°C, weaving was possible without problems.

Note that the obtained gray fabric was scoured, dyed, and finished according to conventional methods to obtain a finished product. Looking at the texture of the finish, when the can wall temperature is in the range of 65 to 110℃, the lower the temperature, the more bulging the finish will be, and the can wall temperature during vacuum drying of 65 to 70℃ is more preferable. It turned out that.

Example 3 Semi-dal polyester filament yarn 49 (1/24 f) with a peak thermal stress temperature of 108°C as a high shrinkage component and a boiling water shrinkage rate of 21 inches (1/24 f) and a peak thermal stress temperature of 158°C as a low shrinkage component and a boiling water shrinkage ratio of 1/24 Example 1 Condition 3: 850 different shrinkage mixed fiber yarns intertwined with semi-dane polyester A'49d/24f with a ratio of 8 tassels were set up on a tarreel and fed.
Acrylic acid ester V copolymer 6o weight section, Warakutsu 2
0% by weight and 200% by weight of surfactant, a 100% by weight aqueous sizing solution is used. For sizing, a machine with a drying area is used and a touch roller method is used. The thread length was 50 (1
m was wound onto a beam. This beam was placed in a vacuum setter and the can wall temperature was maintained at 65° C., and the beam was dried under reduced pressure at 720 cm of mercury for 40 minutes. The moisture content of the yarn before vacuum drying was 7.1% by weight, but the moisture content of the yarn after vacuum drying was α
The amount of adhesive was 8M, and the amount of glue adhered was 5.5% by weight. When beaming 7 beams, the number of warps is 59.
50 yarns, the warp density is 34.4 crn, and the weft is the different shrinkage mixed fiber yarn with the above-mentioned sizing, and the weft density is 31.9 crn.
As M, the number of revolutions is 1 on an ER type rapier loom manufactured by Tsudakoma Kogyo ■.
Twill weaving was performed at 25 rpm. The weaving performance was completely questionable, and the dyeing and finishing processes of this fabric were corrected.The finishing quality was improved by using a sizing agent with a wax content of less than 15 weight fi1, and by drying with hot air using the conventional sizing method. It had the same finish quality and texture.

Example 4 Semi-dull polyester filament yarn 148d/96f
After winding 7502 rolls of yarn, use a two-for-one twister ÷ 309 type twisting machine made by Murata Machinery ■ in the S direction, 19
00 times/? P! Also roll up the cheese and give it some heat. This cheese was heat set using a setter at a steam temperature of 85° C. for 40 minutes, and then 6 pieces of 750 knots were rewound onto a large bobbin. At this time, gluing was carried out in order to allow the gray fabric to stand up slowly when it was relaxed and to prevent an explosion phenomenon.

The sizing agent according to Condition 3 of Example 1 was used as the sizing agent, and it was applied to the heated yarn using a touch roller method and wound up without drying.

The moisture content of this heated yarn was &5% by weight, and when it was dried under reduced pressure in a vacuum setter at a can wall temperature of 70° C. and 7201 mercury columns for 30 minutes, the moisture content was >0.7% by weight. This yarn is used as a weft and is made by Tsudakoma Kogyo Water Jet Loom Z.
When weaving was carried out using a W100 model at a rotational speed of 38 Orpm, good weaving properties were observed with no glue build-up on the yarn path.

Example 5 Bright triacetate filament yarn 100a/24
f. A yarn with a water conduction shrinkage rate of 1.5 inches was heated 300 times/m in advance. 610 of these yarns were set up on a creel, and after being pasted with the sizing agent of Example 1 and Condition 2 using a warber, they were wound onto a beam at a winding speed of 160 m/min and a yarn length of 500 m without drying. This beam is placed in a vacuum setter at a can wall temperature of 10
It was dried under reduced pressure at 0° C. for 30 minutes, and then taken out through a three-circuit vacuum setter. The amount of glue adhered at this time was A5 weight. The total number of lines when beaming 8 lines is 4880.
As a book, the warp density is 78 / 2 people / whale size, and the number of revolutions is 5 using the air jet loom ZA100 type manufactured by Tsudakoma Kogyo ■.
It was woven at 8 Orpm. In addition, the weft yarn was the aforementioned yarn before being glued, and the weft yarn density was 115 wood/measure.

The finish quality from this gray fabric is determined by Tsudakoma Kogyo (
! Drying temperature 100℃, yarn speed 1 using XJ sizing machine KS, TH
00? ? ! The texture was equivalent to that obtained by weaving using threads sized at 1/2 min.

(Effects of the Invention) The present invention allows drying at relatively low temperatures using ordinary equipment, and especially when producing small lots of textiles, the gluing work can be carried out using existing equipment, making it extremely useful. Useful.

Claims (1)

[Claims] After gluing a water-based sizing agent containing an acrylic ester copolymer as a resin component and in which 15 to 30% by weight of the sizing agent pure amount is wax to a filament yarn, winding it up without drying it, A method for pasting filament threads, which comprises then drying under reduced pressure at a temperature range of 65 to 110°C.