JPS63264979A - Method for sizing warp 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 applying a sizing agent to warp yarns, and more specifically, the present invention relates to a method for applying a sizing agent to warp yarns. The present invention relates to a method of applying a cosmetic sizing agent to improve the weavability of warp threads.

[Conventional technology]

The warp beams to be used for weaving are glued with a glue,
This prevents the entanglement of fluff that would impede shedding in the weaving process, maintains the strength and elongation of the warp yarns at appropriate values, and prevents yarn breakage and the formation of pilling.

In recent years, the types of fibers, the structures and types of yarns, and the structures and types of textiles have diversified, as well as the types and performance of fibers.For example, with the development and popularization of various shirt torqueless automatic looms, the requirements for warp Weaving performance is also becoming more sophisticated.

In particular, in the weaving process, in order to prevent warp fuzz from becoming entangled and improve thread handling, conventional methods include applying appropriate moisture to the warp threads, adding moisturizing and water-retaining agents to the sizing agent, or , applying wax to the sizing agent layer of the warp yarns (after-waxing) was practiced.

However, simply adding moisture does not have a long-lasting effect, and adding a moisturizing agent to the adhesive
Although effective, there was a problem in that the effect of improving weavability was insufficient compared to the amount required to be added. Furthermore, applying wax is also effective, but heating is required to prepare the wax bath, and wax remains on the woven product even after the desizing and scouring processes, resulting in uneven dyeing. There are problems such as causes.

[Problems to be solved by the invention]

The present invention solves the problems of the conventional method of sizing the warp yarns, namely, that the effect of preventing the formation of fuzz on the warp yarns and their tangling is insufficient, and that wax remains on the fabric.
This is intended to solve problems such as difficulty in complete removal and insufficient sustainability of moisturizing and water-retaining effects.

[Means and effects for solving the problems] The present invention:
The method for applying sizing agent to the warp yarns includes a sizing step of applying a sizing agent liquid to the warp beam, a step of drying the sizing warp beam, a step of winding up the dried sizing warp beam, and the drying step. In at least one step before and after the step, a step of applying a cosmetic glue liquid to the surface of the glue layer formed on the warp, the cosmetic glue having (A) the following general formula ( I):R.

[However, in the above formula (1), R1 represents a member selected from a hydrogen atom and a methyl group, and R2 represents hydrogen, sodium,
represents a potassium and lithium atom, an ammonium group, and a saturated polyhydric alcohol residue having 2 to 4 carbon atoms and having 2 to 3 hydroxyl groups] At least one type of crosslinked type comprising one type of repeating unit, not all R2s in the repeating unit are the saturated polyhydric alcohol residues, and having a crosslinking point in the repeating unit. an acrylic acid compound polymer; (B) at least one polyhydric alcohol;
It is characterized by containing a composition of.

The method of the present invention includes the steps of sizing the warp beam with a sizing agent, drying the sizing warp beam, and winding up the dried warp beam. Cosmetic sizing includes a step of applying a specific cosmetic sizing liquid to the surface of the sizing agent layer on the warp yarns in at least one step before and after the drying process.

The pasting process, drying process, and winding process can be performed using conventionally known methods and devices. Furthermore, there are no particular restrictions on the type or amount of adhesive used.

In the method of the present invention, the cosmetic paste liquid applying step may be performed after the pasting step and before the drying step, or after the drying step and before the winding step. Alternatively, the wound-up sizing may be performed in at least one step of the process of feeding the warp beam into the weaving process while unwinding it.

Furthermore, in the cosmetic paste liquid applying step, the pasting is done after the step.
and before the drying step, and after the drying step,
In addition, it may be applied two or more times before the winding process.

For example, the cosmetic sizing agent application step in the present invention may be performed after the warp beam fed to the sizing machine has passed through the sizing tank but before reaching the dryer, for example, when it is in the saw box. Alternatively, it may be applied at a stage after passing through the dryer and before reaching the winder, or it may be applied at the two stages described above. Alternatively, the wound warp beam is unwound and a decorative sizing agent is applied to the warp beam when it is sent to the weaving process, for example, when it travels between a backrest roll and a dropper of weaving equipment. A liquid application step may also be performed.

The cosmetic paste used in the method of the present invention has the following formula: (A) General formula (I): [However, in the above formula (1), R1 is -H or -CH2, and R2 is -Hz -Na , - , -Li.

-NH4 or a polyhydric saturated alcohol residue containing 2 to 3 10H groups and having 2 to 4 carbon atoms (e.g., ethylene glycol residue, glycerin residue, propylene glycol residue, or , 1,3-butanediol residue, etc.]
It is. ] At least one repeating unit having at least one type of repeating unit represented by, not all Rts in this repeating unit are the above-mentioned polyhydric alcohol residues, and having a crosslinking point in this repeating unit. It includes a composition containing as main components one type of crosslinked acrylic acid compound monomer and (B) at least one type of polyhydric saturated alcohol.

Although the crosslinked acrylic acid compound polymer (A) has a crosslinked structure, it dissolves in water or polyhydric alcohol and forms a gel with extremely fine particles on the order of several μm. . Such polymers can be obtained by polymerizing the corresponding acrylic acid compound and a crosslinking agent in an organic solvent such as benzene in the presence of a solvent-soluble polymerization initiator such as azobisisobutyronitrile. Can be done.

The crosslinked acrylic acid compound polymer (A) used in the method of the present invention can be produced by the method described in JP-A-61-113,881 and JP-A-62-34942.

Polyhydric saturated alcohol (B) contained in the cosmetic paste of the present invention
) can be selected from, for example, ethylene glycol, glycerin, propylene glycol, and polyethylene glycol (preferably those with molecules less than 11,000).

The mixing weight ratio of the crosslinked acrylic acid compound polymer (A) and the polyhydric saturated alcohol (B) in the composition in the cosmetic paste used in the present invention is 0.2:99.8.
The ratio is preferably within the range of 20:80.

In addition, in the cosmetic paste liquid, the composition of the crosslinked acrylic acid compound polymer (A) and the polyhydric saturated alcohol (B) is
1 part by weight thereof is mixed with 0.15 to 4 parts by weight of water,
It is preferable to be in a gel state, and the cosmetic paste liquid has a concentration of 200
．． The viscosity is preferably from 000 to 2.000.0 OOcps.

In the cosmetic paste liquid applying step of the method of the present invention, the cosmetic paste liquid is preferably applied to the warp beam in an amount of 1 to 8 cm/g, and is applied in an amount of 1 to 6 cm/g. It is even more preferable.

The step of applying the cosmetic paste liquid may be carried out using any device, but for example, if the device shown in FIG. can be granted.

The cosmetic paste liquid applying device shown in FIG.
, 1. For example, an air pressurization device, a glue tank 2 for accommodating a glue liquid, which is airtightly connected to the air pressurizer, and a glue tank 2 which is airtightly connected to the glue tank 2 via a connecting pipe 7. This includes a sizing agent applying roll 3.

The sizing agent roll 3 has a double tube structure having an inner cylinder 4 and an outer cylinder 6, and the inner cylinder 4 is airtightly connected to the sizing agent tank 2 through a connecting pipe 7, and has a plurality of sizing agent rolls. The through holes 11 of the inner tube 4, which are formed of a perforated tube such as a stainless steel perforated tube, preferably have a hole diameter of 0.5 to 2 mm, and have an alternating λ of 1 to 2 mm. Preferably, they are formed at intervals of 200 mm, and further preferably, they are evenly distributed. The outer cylinder 6 is arranged in a sheath-like manner outside the inner cylinder 4 with a gap 5 in between, and is formed of a porous material having a large number of evenly distributed fine continuous pores.

Furthermore, of the inner cylinder 4 and the outer cylinder 6, at least the outer cylinder
□The cylinder 6 is rotatable around its central axis A, and the inner cylinder 4 may be rotatable, but is generally preferably fixed in a non-rotatable manner.

The through holes in the inner cylinder and the fine continuous pores in the outer cylinder uniformly communicate their respective inner spaces with the outer spaces. The diameter of the fine continuous pores of this porous outer cylinder can be set arbitrarily, but it is preferably within the range of 10 to 80 μm, and more preferably within the range of 20 to 60 μm.

The outer cylinder having fine continuous pores as described above can be formed of an appropriate porous material, but for example, a sintered body of fine fiber weeps such as ceramic fibers or metal fibers, such as stainless steel. It is preferable to form it by.

The operation of applying the cosmetic paste liquid using the above-mentioned device is carried out as follows.

In the apparatus shown in FIG.
It contacts the outer circumferential surface 10 of the outer cylinder 6 and travels in a predetermined direction. By the movement of this beam or by a rotating means, for example a motor, the outer tube 6 of the sizing roll 3 is rotated about its central axis.

Alternatively, only the outer tube 6 or the entire sizing agent roll 3 may be forcibly rotated in a predetermined direction at a predetermined speed.

The paste tank 2 contains a liquid 8 containing a cosmetic paste. The cosmetic paste liquid 8 is pressurized by a pressurizing device 1 airtightly connected to the paste tank 2, and is fed under pressure into the internal space 9 of the inner cylinder 4 of the paste application roll 3 through the connecting pipe 7. Ru. The glue liquid 8 in the internal space 9 passes through the through hole 11 of the inner cylinder 4 and enters the void 5.
When the gas is fed into the interior and fills the void 5, it further passes through the evenly distributed fine continuous pores of the outer cylinder 6 to form the outer circumferential surface 1 of the outer cylinder 6.
0 and is applied to the surface of the warp (not shown) of the beam running in contact with the outer peripheral surface 10 of the outer cylinder 6.

The pressurizing device 1 can be equipped with necessary pressure control means such as valves and pressure reducing valves, filters, etc. so that the magnitude of the pressure to be applied to the adhesive liquid 8 can be appropriately controlled.

In this way, by appropriately controlling the pressure applied to the size liquid 8, the flow rate of the decorative size liquid oozing out onto the outer circumferential surface of the porous outer cylinder 6 can be controlled to a desired value. On the other hand, a desired amount of the cosmetic paste liquid can be uniformly applied.

〔Example〕

The method of the present invention will be further illustrated by examples.

9-11 and 6 1 In Example 1, a warp beam consisting of 5,000 single yarns of 40 count cotton was treated with a sizing agent of the following composition: 0.5% of an aqueous acrylic sizing agent (Tsurugam R20).
00, manufactured by Yushiro Chemical Co.) Total
Gluing, drying, and winding were performed in a conventional manner using 100.0. However, after the sizing process and before the drying process, a cosmetic sizing solution application process was performed on the sizing layer on the warp using the applicator shown in FIG. 1.

This cosmetic paste liquid has (A) 60 mol% of acrylic acid repeating units, 30 mol% of sodium acrylate repeating units, and 10 mol% of 2,3-dihydroxypropyl acrylate repeating units arranged randomly. , and 2% by weight of a polymer having a crosslinking point, (B) 68% by weight of glycerin, and (C
) 30% by weight of water.

For sizing, apply the cosmetic sizing solution onto the undried sizing layer of the warp beam.
It was uniformly applied in an amount of 1/g.

Table 1 shows the physical properties of the warp and weavability of the sizing obtained.

In Comparative Example 1, the same operation as in Example 1 was performed. However, the step of applying the cosmetic paste liquid was omitted.

1. In Example 2, the same operations as in Example 1 were performed. However, the cosmetic paste liquid used was (A) a random polymer 5 in which 77 mol% of acrylic acid repeating units and 23 mol% of sodium acrylate repeating units were arranged irregularly and had crosslinking points. % by weight, (B) 65% by weight of glycerin, and (C) 30% by weight of water. uniformly applied at an application amount of 3nr/g,
Next, after the drying process and before the winding process, a coating amount of 0.3 .mu./g was applied to the dried warp beam.

The results are shown in Table 1.

3 and 6 2 In Example 3, the wound sizing obtained by the same operation as Comparative Example 1 was performed as follows when unwinding the warp beam and feeding it into the weaving process. A cosmetic paste liquid application operation was performed.

The cosmetic paste liquid is made of (A) 3% by weight of a random polymer consisting of 80 mol% acrylic acid repeating units and 20 mol% acrylic acid 2,3-dihydroxypropyl repeating units and having crosslinking points, and B glycerin. 42% by weight and (C) 55% by weight of water. The amount of cosmetic paste liquid applied was 0.03*/g based on the warp beam weight.

In Comparative Example 2, the same operations as in Comparative Example 1 were performed. However, before being subjected to the weaving process, wax was applied to the warp beams in a conventional manner using a wax rod in an amount of 0.06 .mu./g.

The results are shown in Table 1.

Notes to Table 1 *10 Two test pieces of about 2 g each were randomly cut from the glued split wall sample, and the bone dry l
(W,) was measured. Next, transfer this to a beaker, and in the case of a starch-based sizing agent, add it to a 2% justase solution at 55-60°C.
After soaking in water for 1 hour, the sample was washed with water, and then water was added and washed with warm water at 95°C or higher for 30 minutes.

(If PVA is a single system and contains acrylic glue, it was treated in a 1% caustic soda aqueous solution for 30 minutes at 95°C or higher and then washed with water.) This operation was repeated four times, and the remaining glue was removed with a boric acid-saturated iodine solution. Make sure that there is no dry weight after air drying.
was calculated, and the bonded wall was calculated using the following formula, and the average value was expressed.

*2. Take two abrasion strength samples at random, make a test piece by pulling 20 threads together, measure it with a TM type conjugation tester under the following conditions, and cut the second grain of the width of the 20 test pieces. The number of times of friction was measured, and the average value of the four measurements was taken as the abrasion strength.

・Measurement conditions Number of times of friction: 100 times/min Comb center angle: 120° Stretched crab 600 g/20 pieces*3, elongation Samples were randomly sampled to prepare 20 or more yarns with a length of about 40 cm.

The sample thread was drawn using an autograph at a tensile speed of 20 aa/min.
The strength and elongation were determined, and the average value of 20 pieces was determined.

*4. Randomly take a 15aa sample from the flexible sample, overlap the two ends by 1.2cm to make a loop, fix the overlapped part with cellophane tape, hang it from this fixed part, and attach a 0.2cm sample to the bottom end of the loop. The vertical and horizontal diameters of the loop were read when loads of 0.02 g and 0.05 g were applied, and the flexibility (%) was determined using the following formula, and expressed as the average value of 5 or more. The smaller the number, the more uniform the flexibility.

*5. Weaving property: Number of thread breakages per hour due to air jet loom weaving or number of operation stops at 7 o'clock [Effects of the invention] By applying a specific decorative sizing agent liquid to the surface of the sizing agent layer on the warp yarns according to the method of the present invention, The weavability of warp threads can be significantly improved. Further, the application of a decorative sizing agent according to the method of the present invention can be applied to unsized warp yarns, such as large-count warp yarns or partially warped warp yarns, thereby improving the weavability of the warp yarns.

[Brief explanation of drawings]

FIG. 1 is an explanatory cross-sectional view of the main parts of an example of an apparatus for carrying out the cosmetic paste applying step of the method of the present invention. DESCRIPTION OF SYMBOLS 1... Pressure device, 2... Gluing agent tank, 3... Gluing agent roll, 4... Inner cylinder, 5... Gap,
6...Outer cylinder, 11...Through hole. Figure 1 4... Inner tube

Claims (1)

[Claims] 1. A sizing step of applying a sizing agent to the warp beam, a step of drying the glued warp beam, a step of winding up the dried sizing warp beam, and a step before the drying step. At least one subsequent step includes a step of applying a cosmetic glue liquid to the surface of the glue layer formed on the warp, and the cosmetic glue has the following general formula (I): (A): formula,
Chemical formulas, tables, etc. are available▼(I) [However, in the above formula (I), R_1 represents a member selected from a hydrogen atom and a methyl group, and R_2 represents a hydrogen, sodium, potassium, and lithium atom, or an ammonium group. ,
and 1 selected from saturated polyhydric alcohol residues having 2 to 3 hydroxyl groups and having 2 to 4 carbon atoms.
Representing a member] has at least one type of repeating unit represented by and (B) at least one polyhydric alcohol. 2. The cosmetic paste applying step is performed after the pasting step,
The method according to claim 1, wherein the method is carried out at a stage before the drying step. 3. The method according to claim 1, wherein the cosmetic paste applying step is performed after the drying step and before the winding step. 4. The cosmetic paste applying step is performed after the pasting step,
and a step before the drying step and after the drying step,
The method according to claim 1, wherein the method is performed in a step before the winding step. 5. Claim 1, wherein the decorative sizing agent application step is carried out in at least one step of the step of feeding the wound-up pasted warp beam to the weaving process while unwinding it.
The method described in section. 6. The mixing weight ratio of the crosslinked acrylic acid compound polymer and polyhydric saturated alcohol in the composition in the cosmetic paste is within the range of 0.2:99.8 to 20:80. A method according to claim 1. 7. Claim 1, wherein in the cosmetic paste liquid, the crosslinked acrylic acid compound polymer/polyhydric alcohol composition is mixed with 0.15 to 4 parts by weight of water per 1 part by weight. The method described in section. 8. The amount of the cosmetic paste liquid is 1 to 8 mg/to the warp beam.
2. A method according to claim 1, wherein the method is applied in an amount of g. 9. The cosmetic paste liquid has an amount of 200,000 to 2,000,
2. The method of claim 1, having a viscosity of 0.000 cps. 10. The method of claim 1, wherein the polyhydric alcohol is selected from glycerin, propylene glycol, ethylene glycol, and polyethylene glycol.