JPH05209356A - Treatment of flock-finished material - Google Patents

Abstract

PURPOSE:To prevent the lowering of the impact force of a water jet ejected from a finishing nozzle head caused by the stagnation of the water-jet in a pretreating nozzle head in the water-jet treatment of a flock-finished surface with two or more nozzle heads. CONSTITUTION:A flock-finished surface 11 of a flock-finished material 10 is treated with high-pressure water-jet streams ejected from two or more nozzle heads arranged in the lateral direction of the material and having a number of nozzles 5 placed in a row. In the above process, the flock-finished material 10 is transferred in a state bent in vertical direction and passed through a reversing part or an inclined part. One of at least the pretreating nozzle heads 2 and 3 is placed opposite to the lower face of the transfer path or the side face of the reversing part and the flock-finished surface is treated with a high- pressure water-jet while preventing the stagnation of the water ejected through the pretreating nozzle heads 2, 3 on the flock-finished surface 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating a flocked product for making the floc of the flocked product softer or finer by a water flow.

[0002]

2. Description of the Related Art As a typical example of a method for producing a flock processed product obtained by implanting short fibers (flock) having a thickness of 0.5 denier or less, Japanese Patent Publication No. 60-43476 and Japanese Patent Publication No. 6-6.
1-312239, JP-A-62-199882 and the like can be mentioned.

According to the method described in Japanese Patent Publication No. 60-43476, a suede tone is formed by directly laminating finely divided flock of 0.5 denier or less on a base fabric and entangled and integrated by a high pressure liquid flow. And Japanese Patent Publication 61-3123
According to the method described in Japanese Patent Publication No. 9, a sea-island type composite fiber is transplanted at a constant density, then one component of the sea-island type composite fiber is removed, and the flocs are extra finely made to have a thickness of less than 0.5 denier and a length of less than 0.7 mm. It is a thing. Further, in the method described in JP-A No. 62-199882, after applying an adhesive to the surface of a substrate, the length of
Flock of extraction type split fibers of 8 to 2.5 mm is flocked and fixed by adhesion, and the flocs are subjected to an ultrafine treatment.

Such a flocked cloth having delicate flocs is produced by either flocking the extremely fined flock to the base cloth or by flocking the extraction type composite fiber flock and then performing the ultrathinning treatment. It had been.

Further, a method of utilizing a high-pressure water stream has already been known as a means for making splittable conjugate fibers into ultrafine fibers. In this method, a water supply pipe in which a large number of nozzles for injecting a thin columnar water flow are closely arranged is used, and in order to eliminate the nozzle locus, Japanese Patent Publication Nos. 61-60186 and 62-12342.
As described in Japanese Patent Publication No. 18181, a method of swinging a nozzle by drawing a spiral curve, or as described in Japanese Patent Publication No. 1-18181, the nozzle is swung under optimum conditions to remove untreated portions. The method to eliminate it is also used.

[0006]

However, in the conventional high-pressure liquid flow treatment, several nozzle heads are arranged above the transfer path of the flocked product, and the water flow is jetted vertically downward from each nozzle head. There is. In this conventional method, if the object to be treated has liquid permeability such as a non-woven fabric, the water discharged from the nozzle head at the previous position does not collect on the surface of the object to be treated, Although the impact force on the product does not decrease, the water discharged from the previous nozzle head is treated in the case of flock processed products where the base fabric does not have substantially liquid permeability, such as flock processed products. The impact force that stays on the surface and acts on the object to be processed of the next nozzle head will be absorbed by this staying water and attenuated,
Therefore, the water pressure of the next nozzle head must be increased more than necessary. When the water pressure of the nozzle head is increased as described above, not only is the amount of water increased and it is uneconomical, but also unevenness of treatment occurs because the layer of accumulated water is non-uniform.

[0007]

DISCLOSURE OF THE INVENTION The present invention has solved the above-mentioned problems in the water flow treatment of the flock surface of a flocked product by dropping the water discharged from the nozzle head at the front position downward. The processing method is such that, when at least two nozzle heads in which a large number of nozzles are arranged in a row are arranged in the width direction of a flocked product and a high-pressure water flow treatment is performed, the flocked product is bent and transferred in the vertical direction, and a transfer path thereof. In the above, at least one pretreatment nozzle head is disposed so as to face the position where the flock surface faces downward or sideways, and the flock surface is subjected to high-pressure water flow treatment.

In order to obtain a high quality flocked product by the method for treating a flocked product of the present invention, at least the final nozzle head has a nozzle hole diameter of 0.4 to 0.8 mm,
A fan-shaped water spray type flat spray nozzle with a water spray angle of 20 to 60 degrees is arranged at a nozzle pitch of 10 to 35 mm, and this nozzle head is bridged in the width direction of a long flock processed product to be processed to form a flock surface. It is advisable to jet the fan-shaped film-like water stream to the nozzle and to swing the nozzle head in the axial direction corresponding to an integral multiple of the nozzle pitch to slowly move the flocked product.

More preferably, a fan-shaped water stream jetted from one flat spray nozzle of the nozzle head,
The distance between the flat spray nozzle and the flock processed product is set so that the fan-shaped water jets ejected from at least the flat spray nozzles located on both sides of the flat spray nozzle intersect at least 1/2, and the water pressure of the nozzle head is 60 to 150 kg / c.
m ² , the amount of discharged water per nozzle is 3.5 to 7.5 l
/ Min, moving speed of flocked products is 1-5m / mi
n, the swinging stroke of the nozzle head is 1 to 3 times the moving speed of the flocked product, and the swinging cycle of the nozzle head is 2 to 5
Cycle / sec.

Two or more of the same nozzle heads as described above may be provided in parallel, and a flock processed product may be processed in several stages by, for example, disposing a nozzle head of the same type stationary behind the swinging nozzle head. It is possible to obtain a higher quality flock processed product.

If the nozzle hole diameter is less than 0.4 mm, the water flow collision pressure on the flocked product is insufficient, and the intended treatment cannot be performed. If the nozzle hole diameter exceeds 0.8 mm, the collision pressure becomes excessive and the flocking occurs. Cause dropout. If the water spray angle of the nozzle is less than 20 degrees, water flow traces such as columnar water flow treatment remain, and if the water spray angle of the nozzle exceeds 60 degrees, the water flow spreads too much and the water flow energy becomes weak, resulting in insufficient fine division of flocs. Becomes Further, if the rocking cycle of the nozzle head to be rocked is less than 2 cycles / sec, the lateral movement of each nozzle is slow with respect to the moving speed of the flocked product, and an uneven portion of the water flow treatment pressure occurs, resulting in 5 cycles / sec. If it exceeds sec, the lateral movement of each nozzle becomes fast and the flocs are likely to be disturbed.

The water pressure in each nozzle head is determined by the purpose of treatment, but in the method of the present invention,
It can be carried out in the range of 0 to 120 kg / cm ² . And the moving speed of the flocked product is 1-5m
/ Min is good, and if the speed is less than 1 m / min, it causes excessive treatment, and the water flow treatment time of more than 5 m / min is shortened, resulting in, for example, a reduction in the flocculation rate. Further, the nozzle head for the pretreatment does not necessarily need to swing to the left and right.

As the flock processed product which is the object to be processed,
Examples include base fabrics such as non-woven fabrics and woven fabrics, to which an adhesive is applied, and flocs are electro-flocked. The fibers used for the base cloth and the flock are not particularly limited to natural fibers, semi-synthetic fibers and synthetic fibers, but the floc surface where the flock is rayon is softened, or the flock surface where the flock is a split type composite fiber. The method of the present invention is particularly suitable for the ultrafine treatment of.

[0014]

The nozzle head for pretreatment, which is disposed so as to face the lower surface of the transfer path of the flocked product or the side surface of the turning portion, softens or extremely thins the flock in the first stage. Most of the discharged water is dropped to prevent the impact force of the next nozzle head from decreasing.

[0015]

Example: Fiber cross section as shown in FIG. 4 (however, 8 divisions)
Melt-spinning using polyester as the A component (7) and polyamide as the B component (8), and after stretching, a tow of splittable conjugate fiber (9) with a single fiber fineness of 1.5 denier is obtained. It was This split type composite fiber (9) is in a tow state and has A component
The (7) side was dyed with a disperse dye and the B component (8) side was dyed with a metal complex salt dye, and then a short cut of 0.8 mm was made with a cutter to form a floc for piles. (This flock is incompletely split due to the impact of cutting.)

Subsequently, a plain weave base fabric (weight per unit area: 130 g / m ² ) using a mixed yarn of polyester 65% by weight and rayon 35% by weight (cotton count 24) has a polyester polyurethane emulsion and an acrylic ester resin. After applying 200 g / m ^{2 of} the adhesive compounded with the ratio of 1: 1, the up-method Dentsu M / C (voltage 30,000 V, electrode distance 1
The composite fiber (7) was flocked at 0 cm). The flocked density at this time was 80 g / m ² . After flocking, it was dried at 120 ° C. to obtain a long sheet-like flocked product having a width of 100 cm.

As shown in FIG. 1, this flock processed product (10) has a width of 1600 mm, an upper length of 8000 mm and a height of 4
The endless conveyor belt (1) made of a stainless steel wire mesh of 100 mm with a length of 00 mm and a lower side length of 8000 mm was guided from the lower surface to the upper surface and transferred in the direction of the arrow. The first pretreatment nozzle head (2) is provided in the width direction on the lower surface side of the transfer path.
, The second pretreatment nozzle head (3) is arranged in the lateral width direction of the turning portion of the transfer path, and the finishing nozzle head (4) is further arranged on the upper surface side of the transfer path to make the flock of the flocked product (10). The surface (11) was subjected to high pressure water stream treatment.

The first and second pretreatment nozzle heads (2) (3)
A flat spray nozzle (5) with a nozzle hole diameter of 0.4 mm and a water spray angle of 30 degrees as shown in FIG.
65 nozzles were installed at 6 mm intervals, and the finishing nozzle head (4) was installed with 65 flat spray nozzles (5) with a nozzle hole diameter of 0.7 mm and a water spray angle of 30 degrees at nozzle pitches of 16 mm. 2) The space between the nozzle (5) of (3) and (4) and the flock surface (11) of the flocked product (10) is set to 75 mm, the finishing nozzle head (4) is 16 mm in the axial direction, 120 kg / c to this finishing nozzle head (4) while rocking at a cycle of 3 cycles / sec.
m ² of pressurized water was supplied.

The first and second pretreatment nozzle heads (2) (3)
90 kg / cm ² of pressurized water is supplied to each nozzle head, and each nozzle (5) (5) has one nozzle (5) and nozzles (5) located on both sides thereof as shown in FIG. Flock processed product (10) so that the fan-shaped film-like water flow (6) jetted from
The fan-shaped film-like water stream (6) was jetted toward the flock (12) of the above to treat the floc surface (11).

At this time, the amount of water discharged from one nozzle (5) is 3.9 on the first and second pretreatment nozzle heads (2) and (3) sides.
1l / min, finishing nozzle head (4) side is 7.91l
/ Min, the first and second pretreatment nozzle heads (2) (3)
Most of the water discharged from the nozzle drops downward, and at the position of the finishing nozzle head (5) there is no pool of water discharged from the pretreatment nozzle heads (2) and (3) on the flock surface (11) The pressure water flow discharged from the nozzle head (4) effectively acts on the flocks without being affected by the collision energy due to the above-mentioned water pool, and the flocs are generated by the difference in water flow pressure with a lower water flow pressure than before. It was possible to make it extremely fine without unevenness.

[Comparative Example] The same flocked product is moved in the horizontal direction with the flock surface as the upper surface, and the first and second nozzle heads used in the above-mentioned examples are arranged together above the flocked surface. The moving speed, the distance between the nozzle and the flock surface, the water pressure of both nozzle heads, etc. were made the same as in the example, and the flock was subjected to water flow treatment, and due to the retention of water discharged from the pretreatment nozzle head on the flock surface. However, the impact force of the finishing nozzle head was attenuated, and the unevenness of the impact appeared due to the non-uniformity of the layer of the retained water, so that a uniform and good flock product as in the example could not be obtained.

FIGS. 5 to 7 show that at least two nozzle heads having a large number of nozzles arranged in a row as described above are arranged in the width direction of the flock processed product to process the high pressure water stream (10). ) Is transferred through the turning portion, and at least one of the nozzle heads (2) and (3) for pretreatment is arranged facing the side surface of the transfer path, and the floc surface is treated for high-pressure water flow treatment. It is a figure showing a transfer mode of a flock processed product.

Particularly, as shown in FIGS. 5 and 6, when at least one of the pretreatment nozzle heads (2) and (3) is arranged on the slope of the transfer path of the flocked product (10), the pretreatment nozzle head ( 2) It becomes easy to recover the water discharged from (3). Further, as shown in FIG. 7, if a step is provided in the transfer path and the pretreatment nozzle head (2) is arranged on the slope, processing can be performed without inverting the flock processed product (10).

In each of the above figures, the finish nozzle head (4) is shown above the flock processed product (10). However, the finish nozzle head (4) also includes the pretreatment nozzle head (2). (3) Similarly, it is also a preferable method of practicing the present invention to dispose on the side surface or the lower surface of the transfer path of the flocked product (10).

[0025]

As described above, when at least two nozzle heads in which a large number of nozzles are arranged in a row are arranged in the width direction of a flock processed product to process a high-pressure water stream, the flock processed product passes through the turning portion. According to the processing method of the present invention, the flocked product is transferred, and at least one of the nozzle heads for pretreatment is disposed so as to face the lower surface of the transfer path or the side surface of the turning portion, and the flocked product is subjected to high-pressure water treatment. The water flow discharged from each nozzle head can be effectively utilized without attenuating, the energy loss is small, the cost is economical, and the treatment can be performed uniformly and evenly.

Further, if the flock processed product is guided to a U-shaped or V-shaped path as shown in FIG. 6 and a nozzle head is arranged on its side to perform water flow treatment, the water discharged from each nozzle head is discharged. The collection process of is easy.

[Brief description of drawings]

FIG. 1 is a schematic side view of a method for treating a flocked product of the present invention.

FIG. 2 is a front view showing a state of a treated water flow.

FIG. 3 is a partial cross-sectional side view of a watering type flat spray nozzle.

FIG. 4 is a cross-sectional view showing an example of a splittable conjugate fiber used for flocs.

FIG. 5 is a schematic side view showing another transfer processing method of a flocked product.

FIG. 6 is a schematic side view showing another transfer processing method of a flocked product.

FIG. 7 is a schematic side view showing another transfer processing method for a flocked product.

[Explanation of symbols]

 1 Endless Carrier 2 Pretreatment Nozzle Head 3 Pretreatment Nozzle Head 4 Finishing Nozzle Head 5 Nozzles

Claims (2)

[Claims] 1. When at least two nozzle heads in which a large number of nozzles are arranged in a row are arranged in the width direction of a flocked product to process a high-pressure water stream, the flocked product is bent and transferred in the vertical direction, and its transfer path. 2. A method for treating a flock processed product, characterized in that at least one pretreatment nozzle head is disposed so as to face a position where the flock surface faces downward or sideways, and the flock surface is subjected to high-pressure water flow treatment. 2. One of the at least two nozzle heads.
2. The method for treating a flocked product according to claim 1, wherein one of the nozzle heads is a nozzle head formed by arranging flat water spray type spray nozzles for injecting a membranous water stream.