JP6170639B1 - Knitted fabric for automated laundry plants - Google Patents

Abstract

An object of the present invention is to provide a knitted fabric to be used for clothing that is lent to various facilities such as medical institutions such as hospitals, accommodation facilities such as hotels, and nursing care facilities, that are compatible with automated laundry plants. A circular knitted single knit that includes 80% by weight or more of a spun yarn and a polyester filament whose short fibers are made of cotton fibers, and the weight ratio of the spun yarn and the polyester filament is 10:90 to 80:20. A knitted fabric for an automated laundry plant, characterized in that the basis weight is 100 to 250 g / m 2 and the thickness is 0.4 to 0.8 mm. [Selection figure] None

Description

  [Technical Field] The present invention relates to a knitted fabric that can be suitably used for clothing that is loaned at various institutions and facilities such as medical institutions such as hospitals, accommodation facilities such as hotels, and nursing care facilities, and that are compatible with automated laundry plants.

  For example, in medical institutions, accommodation facilities, nursing homes, rehabilitation facilities, etc., users are provided with clothes such as gowns, up-and-down lanterns and pajamas, and users wear the provided clothing and use the institutions and facilities. Often used. In addition, the above-mentioned apparel in such institutions and facilities can be provided, collected, washed, and sterilized by a linen supplier, which is a linen supply system supplier, regularly using a linen supply system. Many.

  As a fabric used for gowns, pajamas, etc., knit fabric is preferred because it is not easily wrinkled, is easy to stretch and wear, and is easy to use, and is particularly suitable for rehabilitation in a nursing facility. However, in an automated laundry plant with a linen supply that continuously processes a large amount of clothing, the fact is that knit products are avoided and rarely used.

  Recent automated washing plants are mainly composed of continuous washing machines, hydraulic dehydrators, dryers, roll ironers that stretch wrinkles, folders for folding clothing, sorting work, and shipping. In the process to be performed, how to increase productivity is important. However, knit products have a low processability in this automated laundry plant, and there is a problem that productivity is extremely reduced.

  As a result of the investigation of the problem by the present inventors, it has been found that there are the following three major problems that the knit product cannot be used in an automated laundry plant. For one thing, pressure dehydrated clothing after washing is moved to the next process in a cake shape that has been pressure dehydrated, so it is necessary that the shape does not collapse and the cake shape retainability is high, but it is thick. In the knit, there is a problem that the workability is greatly reduced due to its elasticity, such as the cake swells after pressure dehydration, the cake collapses during movement and the machine is stopped by a stopper. Secondly, there is a problem that the permeability in the roll ironer is poor and it stays in the machine. This is because the knitted fabric is slippery inside the machine of the roll ironer. Thirdly, the linen supplier folds the clothes neatly using the folder and provides them with the same shape evenly, but the knit is soft and stretches and shrinks, so it folds neatly However, it is difficult to provide the same shape.

  As one method for solving such a problem, for example, as shown in Patent Document 1, a pocket portion is provided in a garment, and a clothing main body is accommodated in the pocket so that the same shape can be easily and neatly arranged. Clothes have been proposed. However, the method of storing in this pocket part can make a knitted fabric that is difficult to fold into a beautiful shape, but it can not be folded up neatly, and in the washing process, it can be passed with a roll ironer and cake The characteristics of knitted clothes with poor shape retention could not be improved at all.

  Accordingly, there is a need for a garment that is easy to pass through a conventional automated washing plant and can be folded into almost the same shape while using a knitted fabric that is not easily wrinkled, stretchable and easy to wear and easy to use.

JP 2011-52346 A

  The present invention has been made in view of the current state of the art and problems described above, and its purpose is to make it easy to fold with an automatic folding machine, which is necessary for the linen supply process, while being a knit product, To provide a knitted fabric compatible with an automatic laundry plant suitable for use in clothing that can pass through an ironer (hard to slip) and retain the shape of a dehydrated cake, and to provide a clothing compatible with an automated laundry plant using the knitted fabric It is in.

  As a result of intensive studies to achieve the above object, the present inventor has found that the use of a circular knitted single knit including a spun yarn in which short fibers are made of cotton fibers and a polyester filament makes it difficult to wrinkle and stretch and shrink. While enjoying the characteristics of knit products that are easy to wear, it was found that the problem of an automated washing plant with knit products can be suitably dealt with, and the present invention has been completed.

That is, the present invention has the following configurations (1) to ( 3 ).
(1) A circular knitted single knit that includes 80% by weight or more of spun yarns and polyester filaments whose short fibers are made of cotton fibers, and the weight ratio of spun yarns and polyester filaments is 10:90 to 80:20, basis weight is 100 to 250 g / ^{m 2,} and Ri thickness 0.4~0.8mm der, includes a spun yarn S twist and Z twist to the knitted fabric, each yarn is mixed knitting A knitted fabric for automated laundry plants.
( 2 ) The knitted fabric for an automated laundry plant according to ( 1), wherein the polyester filament has a single yarn fineness of 0.5 to 6 dtex.
( 3 ) A clothing for an automated laundry plant comprising the knitted fabric for the automated laundry plant according to (1) or (2) .

  According to the present invention, since the knitted fabric is used while being a garment for an automated laundry plant, it is easy to stretch and wear when worn, is comfortable during wearing, and hardly feels stress when worn. In addition, since it is difficult to wrinkle, it does not look bad when walking. In addition, since the knitted fabric of the present invention has high processability in an automated laundry plant, it can be continuously processed in large quantities even in knitted products, and can be neatly arranged in the same shape even using an automatic folding machine. . Accordingly, processing, storage and management at the linen supplier and the delivery destination can be performed accurately and efficiently.

FIG. 1 is a knit organization chart (Welted Tengu). FIG. 2 is a knit organization chart (stripe). FIG. 3 is a knit organization chart (reversible stripe). FIG. 4 is a knit organization chart (tengu). FIG. 5 is a knit organization chart (Kanoko). FIG. 6 is a knit organization chart (stripe). FIG. 7 shows a folded state (photo of the example). FIG. 8 shows a folded state (a photograph of a comparative product). FIG. 9 shows cheese after dehydration (shape retention). FIG. 10 shows cheese after dehydration (broken). FIG. 11 shows a DS type fabric friction coefficient tester. FIG. 12 shows how to fold the front opening jacket. FIG. 13 shows the details of the front opening jacket used in the embodiment.

  The knitted fabric of the present invention needs to be a circular single knit. When it is double knit, since the knit loop has a double structure, the elasticity becomes too high, and the shape retention of the cheese after dehydration tends to decrease. In addition, the knitted structure preferably contains 20% or more of welt or tack with respect to the entire structure. More preferably, it is 25 to 55%. More preferably, it is 30 to 50%. If the ratio of the welt or tack is less than the above range, the elasticity of the knitted fabric becomes too high and the cake retention becomes poor, or the elongation of the knitted fabric becomes too high, and the permeability through the roll ironer is low. There is a tendency to decrease or foldability worse. Beyond the above range, the sense of sheer knitting becomes so strong that it is difficult to use it for gowns, sick clothes, pajamas and the like.

  In the present invention, the yarn constituting the knitted fabric needs to use at least both a spun yarn in which short fibers are made of cotton fibers and a polyester filament. By using both the spun yarn and the polyester filament, the poor dryness of cotton and the repeated washing durability can be improved while utilizing the texture of the cotton blended yarn. It is particularly preferable that the knitted fabric is composed of only a spun yarn using cotton fibers and a polyester flat yarn.

  The spun yarn used for the knitted fabric of the present invention is preferably made of cotton as a short fiber. The spun yarn may be a composite of long fibers. In this case, the mixing ratio of the short fibers is preferably 50% or more. As long as the object of the present invention is not impaired, it is possible to mix short fibers other than cotton. In that case, the mixing ratio of cotton in the short fibers constituting the spun yarn is preferably at least 80% or more. When the blending ratio of cotton in the spun yarn is in the above range, the knitted fabric can have a good anti-pill property, is excellent in hygroscopicity and water absorption, has a soft texture, and is used in clothing such as sick clothes, gowns, and pajamas. It can use suitably for goods. Moreover, if the mixing ratio of the short fibers in the spun yarn is less than 50%, the mixing ratio of cotton in the entire knitted fabric may be lowered, and the hygroscopicity and the touch may be deteriorated.

  The knitted fabric of the present invention needs not to be distorted during repeated linen washing. Generally, a circular knitted single knitted fabric is easily distorted in the vertical direction due to the residual torque of the knitted yarn. Therefore, as a spun yarn used for the knitted fabric of the present invention, for example, when only one of S twist or Z twist is used, the snare coefficient of the spun yarn when measured by the JIS-L1095-9.17.1 A method is 0 to 15 is preferable. More preferably, it is 0-10. More preferably, it is 0-8. If the snare coefficient exceeds the above range, the knitted fabric is likely to be skewed or curled, and the clothing is likely to be deformed or wrinkled due to fabric distortion. In order to make the snare coefficient more desirable, double-spun yarn with the twisting and twisting directions reversed to cancel the twisting torque, and spun yarn made by bundling spinning method such as Murata Vortex Spinner (MVS) Is preferably used. It is also a preferred aspect to prepare and knit both S-twisted and Z-twisted spun yarns having opposite twist directions. When both S-twisted and Z-twisted spun yarns are used, the knitting rate of the S yarn and the Z yarn is preferably knitted at a ratio of 30:70 to 70:30. The fineness of the spun yarn is preferably English count (cotton count) 20 to 50, more preferably 30 to 40. If it is thinner than the above range, the fabric becomes too thin and durability against linen washing tends to be lowered, and if it is thicker than the above range, it becomes too thick and difficult to use for the intended use.

  The polyester filament used in the present invention may be one that has been subjected to yarn processing such as air entangled yarn, covering yarn, twisted yarn, etc., but it is preferable to use yarn that is not crimped, particularly raw yarn (flat yarn). Is preferably used. If the crimp is strong, the elasticity of the knitted fabric is increased and the shape retention of the dehydrated cheese is likely to be lowered, or the processability with a roll iron is likely to be lowered. For this reason, it is better not to use false twisted yarn with strong crimp. When a yarn that is not crimped is used, the static friction between the metal roll and the heat belt is improved when the yarn is wet, and the roll iron passability is remarkably increased. In addition, the use of a filament that is not crimped has an effect of making it difficult to cause distortion of the knitted fabric when linen washing is repeated.

  The total fineness of the polyester filament is preferably 50 to 200 dtex, more preferably 75 to 120 dtex. If it is thinner than the above range, the fabric becomes too thin, and the durability against linen washing tends to decrease. If it is thicker than the above range, it becomes too thick and difficult to use for the intended application. The single yarn fineness of the polyester filaments knitted into the knitted fabric or contained in the spun yarn is preferably 0.5 to 6.0 dtex. More preferably, it is 0.9-4.0 dtex. When the single yarn fineness is less than the above range, the single yarn is broken by linen washing and becomes fluffy and the appearance becomes poor and pilling is likely to occur. When the above range is exceeded, the elasticity of the knitted fabric becomes too high, and there is a possibility that the shape retention of the dehydrated cheese is lowered.

  As a result of investigating the relationship between the processability of the automated washing plant and the structure of the knitted fabric, the present inventors have found that the weight ratio of the spun yarn and the polyester filament in the knitted fabric is 10:90 to 80:20. Found that is necessary. It has also been found that the spun yarn and the polyester filament must be used in an amount of 80% by weight or more of the entire knitted fabric. If it is this range, even if other yarns are included, it is difficult to reduce the process passability. When the weight ratio of the spun yarn is less than the above range, even if a spun yarn of 100% cotton is used, the hygroscopicity and the touch are deteriorated and the comfort is deteriorated. Moreover, when the use weight ratio of the polyester filament is less than the above range, it takes too much time to dry or the roll iron passing property tends to be lowered. By setting the weight ratio of the spun yarn and the polyester filament within the above range, the processability of the knitted fabric in the automated laundry plant is improved. More preferably, the weight ratio used is 30:70 to 70:30.

  In the present invention, the spun yarn and the polyester filament are preferably alternately knitted. The alternating knitting refers to a structure in which spun yarns and polyester filaments are replaced one by one during knitting, or are knitted by replacing a plurality of yarns. Although it is preferable to alternate one, it may be knitted by combining two alternates, three alternates, or one to three alternates. If the number exceeds four, the process passability in an automated laundry plant tends to decrease, and the border-like face may become stronger.

  The knitted fabric of the present invention is mainly made of tack and knit, and includes, for example, stripes, scallops (front swords, back swords, regular swords, etc.), French tacks, straight tacks, pearskins, knitting patterns is there. In addition, as a structure mainly made of welt and knit, there are, for example, a welt tentacle, a single-sided wave knitting, a cover knitting, an inlay knitting needle knitting and the like. If these knitting structures are used to set an appropriate density, the stretchability of the knitted fabric can be suppressed and the process passability in an automated laundry plant is likely to be increased. The appropriate density at this time varies depending on the knitting structure, but it is preferable to set the finishing density in the range of 25 to 55 wales / 2.54 cm and 25 to 60 / 2.54 courses. More preferably, the number of wales is 30 to 45 / 2.54 cm, and the number of courses is 30 to 55 / 2.54 cm. The knitting machine to be used is preferably knitted using a 24-46G single circular knitting machine.

The basis weight of the knitted fabric of the present invention needs to be 100 to 250 g / m ² . Preferably it is 120-200 g / m < ² >. The basis weight should be suitable for the purpose of the purpose of the present invention, such as sick clothes, pajamas, gowns, etc., but if it exceeds the above range, the drying property tends to be extremely lowered, and the process passes through the automatic washing plant. It is easy to deteriorate. Further, when the basis weight is less than the above range, a knitted fabric with a coarse mesh is easily formed, and a sense of sheerness is easily obtained, or the strength is lowered and the knitted fabric is difficult to use for the intended use.

  The thickness of the knitted fabric of the present invention needs to be 0.4 to 0.8 mm. Preferably it is 0.6-0.7 mm. When the thickness exceeds the above range, the elasticity of the knitted fabric is increased, the form retention of the dehydrated cheese is likely to be lowered, or the drying property is lowered to reduce the production efficiency. When the thickness is less than the above range, it is necessary to use a thinner thread, and the durability in linen washing tends to be reduced, or it tends to be transparent.

  For the purposes of the present invention, it is preferred that the knitted fabric has a relatively high elasticity, and therefore, it is preferable to design the knitted fabric to have a high rigidity. The rigidity of the knitted fabric affects the shape retention by the automatic folding machine after washing and drying. If the knitted fabric has low rigidity, the fabric hangs down when the sleeve or hem is folded back by the guide bar of the automatic folding machine, and the fabric does not fold well. If the knitted fabric is highly rigid, the sleeves and hem of the guide bar will fold well and the appearance will be beautiful. As a measure for evaluating the stiffness of a knitted fabric, evaluation by the cantilever method is good. In this case, the total bending resistance is preferably 50 to 100 mm. More preferably, it is 55-90 mm. If the bending resistance exceeds the above range, the knitted fabric will be too strong, making it difficult to fold, and the feeling of wearing will worsen. If the bending resistance is less than the above range, the fabric is too soft and difficult to fold, and the finish tends to be poor. Moreover, it is preferable that the range of the bending resistance in the vertical direction is 20 to 50 mm, and the range of the bending resistance in the horizontal direction is 20 to 45 mm.

  The knitted fabric of the present invention needs to have a certain high coefficient of friction on the surface. If the friction coefficient on the surface of the knitted fabric is not high to some extent, in a continuous ironing process using a roll iron after washing and dewatering, it slips between a metal roll and a heat belt and tends to stop in the middle of the roll ironing process. As a measure for evaluating the slipperiness of the knitted fabric, the static friction coefficient of the knitted fabric is good. When measured with a DS-type friction coefficient tester as an evaluation method, the vertical direction of the product (knitted fabric) is preferably 0.75 to 1.00. More preferably, it is 0.80-0.90. If it is less than the above range, the slippage of the knitted fabric is too good, and the process passability by a roll iron tends to deteriorate. If it exceeds the above range, the texture becomes hard and the feeling of wearing tends to deteriorate.

  The knitted fabric of the present invention preferably has not too high wrinkle recovery when wet. Dehydration after washing in automated plant washing usually uses a pressure dehydration process rather than centrifugal dehydration. When pressure dehydrating a certain amount of laundry, the laundry solidifies into a round cylindrical shape (cake shape) and flows to the next process, but if the wrinkle recovery property when wet is high, the laundry swells after pressure dehydration, The round cylindrical shape is not maintained, and when moving to the next drying process, the laundry collapses, and it is necessary to pick up the laundry manually, or the stopper is detected and the machine stops and automation is impossible. The Monsanto method is a major measure for wrinkle recovery. The wrinkle resistance when the back surface is valley-folded when the dough is wet is preferably an average of 62% or less, more preferably 50 to 60%. If it exceeds the above range, the clothes may swell after pressure dehydration, and a beautiful cake shape may not be maintained.

  The knitted fabric of the present invention is preferably not distorted by repeated washing. Generally, a circular knitted single knitted fabric is distorted in the vertical direction due to the residual torque of the knitted yarn. In order to eliminate the distortion as much as possible, it can be eliminated by using a polyester yarn having a good heat setting property or by knitting both Z-twisted and S-twisted yarns. Although the knitted fabric of the present invention knits polyester yarn having good heat setting property, if the mixing ratio is low, skewing does not stop completely by heat setting of the fabric. Therefore, the twist direction of the cotton yarn can be eliminated as much as possible by knitting both the Z and S twist yarns. The skew after washing is desirably 5% or less, more preferably 3% or less.

  An automated laundry plant for commercial laundry of garments using the knitted fabric of the present invention will be described below. In the linen supply system, laundry-related machines for washing large quantities of textile products continuously with a small number of workers have been developed. For example, in the washing machine, production of the Vals Flow series of Tokyo Dyeing Machine Co., Ltd. A continuous laundry treatment apparatus with improved properties is used. The laundry to be washed is dehydrated in a short time using a pressure-type dehydrator every fixed amount. After drying such as a shaker tumbler, the wrinkles are continuously stretched by, for example, a roll ironer, and then folded and shipped in a folder such as Toto Folder Industry.

  First, it is necessary that the to-be-dehydrated cheese made by processing with a pressure dehydrator does not collapse in a short time. For example, after washing with a continuous washing machine, it is preferable to treat a 50 kg item to be washed with ASP-350 manufactured by Asahi Seisakusho Co., Ltd. for 30 seconds at 30 MPa and retain the cheese shape immediately after dehydration after 3 minutes. If the cheese collapses within 3 minutes, workability will be greatly reduced.

  Next, after putting in a dryer to remove water to some extent, the process proceeds to a roll ironing process. Roll ironers need to be ironed neatly and taken to the exit without delay. For example, when it passes through the roll ironer R-832 manufactured by Musashinokikai Co., Ltd., it slips and delays between the heat belt and the drying roll, and the one that is not properly ironed is judged to have poor permeability.

  In addition, it is necessary to fold the folder neatly so that the items to be washed are all the same size and do not collapse. For example, using P4S-FE manufactured by Toto Folder Industry Co., Ltd., the length variation when folding the front garment with a hem width (the length between both sleeve ends) of 138 cm into a length of 38 cm and a width of 25 cm, It is better to fold it neatly so that the length is within ± 2 cm and the horizontal length is within ± 2 cm.

  The knitted fabric of the present invention can be used for all linen-supplied garments, particularly garments for automated laundry plants. Specific examples include, but are not limited to, sick clothes, white robes, nursing clothes, gowns, yukata, pajamas, jinbei, work clothes, working clothes, and the like.

  EXAMPLES The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples. In addition, each performance evaluation in an Example was performed with the following method.

(Spun yarn count, filament fineness)
The measurement was carried out in accordance with the cotton count measurement method of the quantity tex / count measurement of the general spun yarn test method of JIS-L1095-9.4.

(Filament fineness)
It measured based on the positive fineness of JIS-1013-8.3.1A method.

(Number of twisted yarns)
Measured according to the number of JIS-L1095-9.15.1 A method.

(Material ratio of spun yarn)
It measured based on the blending rate of JIS-L1030-2.

(Snar coefficient)
Measured in accordance with JIS-L1095-9.17.1 A method Snart index.

(Knitted fabric density)
JIS-L1096 8.6.2 Based on the density of the knitted fabric, the course density (pieces / 2.54 cm) and the wale density (pieces / 2.54 cm) of the knitted fabric were measured. When measuring visually, the place with the most knit loops on the organization chart in the wale direction (or course direction) was selected, and the number of knit loops was measured to obtain the density.

(Weight of knitted fabric)
JIS-L1096 8.3.2 The basis weight of the knitted fabric was measured based on the mass per unit area in the standard state of the A method.

(Thickness of knitted fabric)
Fineness of spun yarn and filament JIS-L1096 8.4 The thickness of the knitted fabric was measured according to the thickness of the A method. The constant pressure of the measurement conditions was 0.7 kPa.

(Flexibility of knitted fabric)
Measured by JIS-L-1096 A method and 45 degree cantilever method. The sum of the average value of the measured values in the vertical direction and the average value of the measured values in the horizontal direction was defined as the bending resistance.

(Wrinkle recovery after dehydration of knitted fabric)
Measured by JIS-L-1059-1 Monsanto method. However, the cloth was measured after being immersed in water and immediately after being dehydrated in a home washing machine for 3 minutes. Evaluation of cake shape retention after pressure dehydration of the present invention measures the back side of the dough. The reason for this is that at the edge of a cake that has been pressure dehydrated in an automated laundry plant, the surface of the crumpled dough surface has many folds (that is, the back has valleys). It is. Since the Monsanto method evaluates the recoverability of wrinkles that have been valley-folded, the measured value on the back surface is used according to the actual situation. In the single knit, the surface of the garment is generally the same surface as the surface of the knitted fabric (knit loop surface).

(Friction resistance of knitted fabric)
The static friction coefficient was measured using a DS type fabric friction coefficient tester manufactured by Koa Shokai. FIG. 11 shows the structure of a DS type fabric friction coefficient tester. In the measurement, the test machine is operated, and the slide (B) on which the slide piece (A) is mounted is pulled backward, but the load at the moment when the slide piece (A) starts to slide with respect to the slide (B) (C) The value read on the scale of the measurement unit is the static friction force Fs. The static friction coefficient Fs is calculated by the following formula.
Coefficient of static friction = Fs / (weight of load (D) + weight of sample (E))
Measurement conditions: Cotton cloth (gold width 3) is used as the friction cloth. The measurement environment was 20 ± 2 ° C., 65 ± 3% RH, the tensile speed was 7.5 cm / min, and the load was 98.1 cN. The sample to be measured was dried and then conditioned for 48 hours in a measurement environment. The static friction coefficient is a result of measuring the warp direction of the knitted fabric.

(Cake retention after pressure dehydration)
50 kg of clothing was put into a continuous washing machine (CR60-8II: manufactured by Mitsubishi Heavy Industries) and washed with a detergent at a main washing temperature of 60 ° C. for a total of 20 minutes. Thereafter, it was put into a pressure dehydrator (ASP350: Asahi Machine Works) and dehydrated at a pressure of 30 Mpa for 30 seconds. The dehydrated clothing was in the shape of a cylindrical cake, but the clothing was swollen and its shape was not kept clean, and the length and number of protruding clothing were scored and graded as follows.

Number of points = cake edge protrusion length (points) x number (pieces)
・ Extrusion length less than 5 cm: 1 point 5 cm or more and less than 10 cm: 3 points 10 cm or more: 5 pointsGrading rating 1st grade: 16 or more 2nd grade: 11-15 points 3rd grade: 5-10 points 4th grade: 2-4 Grade 5: Within 1 point

  If it is 4th grade or higher, no problem occurs during conveyance, and the process passability is good. In the third grade, if the protruding dimension is only within 10 cm, it passes through somehow, so in the present invention, the third grade or higher is regarded as acceptable. Grades 1 and 2 are unacceptable because the processability is poor and the machine stops.

(Roll iron passability)
Put the clothes from which a certain amount of water has been removed with a tumbler dryer through the formwork, and dry it completely with wrinkle spreading with a continuous ironer R-832 (Musashinokikai). The vapor pressure was 0.34 MPa and the outlet speed was 13 m / min. If 10 clothes were allowed to pass through and all 10 clothes were passed through, it was marked as ◯.

(Automatic)
Clothing that has been dry pressed with a roll iron is folded into a rectangle by an automatic folding folder. FIG. 12 shows how to fold the front opening jacket. The evaluation criteria that can be folded neatly without problems depended on the following points. The average of 5 places. If it evaluates by a following formula and is 3rd grade or more, it will be set as a pass.
Number of points = size shift (points) x folding line (points) x wrinkles (points)
・ Size deviation of less than 5 mm: 1 point 5 mm or more and less than 20 mm: 2 points 20 mm or more: 3 points ・ Folding line straight: 1 point meandering: 2 points ・ No wrinkles: 1 point: 2 points ・ Grading rating 1st grade: 12 points 2nd grade: 9-11 points, 3rd grade: 5-8 points, 4th grade: 2-4 points, 5th grade: within 1 point

(A feeling of wearing)
Clothing using fabric developed by 10 monitors was worn and compared with clothing using standard fabric in terms of texture and feeling of wear. When the texture of the dough was almost the same as that of the standard dough, ◎, when it was slightly harder than the standard sample, ◯, when it was hard, △, when it was very hard, x, and Comparative Example 1 was used as the standard sample. As for the feeling of wearing, the evaluation of ◎ and ○ was judged as passing.

(Shrink after washing)
The product was repeatedly washed 5 times in an automated laundry plant, and the length and shoulder width shrinkage were evaluated. The result was an average of the evaluation of the second place. In the following evaluation, grade 3 or higher was judged acceptable. In addition, the automatic washing was performed as a single washing by passing the continuous washing machine → hydraulic dehydrator → tumbler dryer → roll ironer for extending wrinkles → folder under the above conditions.

Points = Length shrinkage (points) x Shoulder width shrinkage (points)
・ Length shrinkage 0 to less than 3%: 1 point 3 to less than 5%: 2 points 5% or more and less than 7%: 3 points 7% or more: 4 points ・ Shoulder width shrinkage 0 to less than 3%: 1 point 3 to 5 Less than%: 2 points 5% or more and less than 7%: 3 points 7% or more: 4 points · Grade rating 1st grade: 16 points 2nd grade: 10-15 points 3rd grade: 5-9 points 4th grade: 3-5 points 5 Grade: Within 2 points

(Washing durability)
The washing was repeated 100 times in an automated washing plant and evaluated by the following scoring. In the following evaluation, grade 4 or higher was judged acceptable.
Number of points = pilling (points) x fabric thinning (points)

-No pilling: 1 point slightly generated: 2 points generated: 3 points considerably generated: 4 points-No change in fabric weight loss: 1 point slightly faded: 2 points thinned: 3 points considerably thinned: 4 points-Grade 1 grade : 16 points, 2nd grade: 10-15 points, 3rd grade: 5-9 points, 4th grade: 3-5 points, 5th grade: within 2 points

Reference example 1
Z-twist direction made of polyester filament flat yarn having a round cross-section of 84 dtex, a filament count of 36, a single yarn fineness of 2.33 dtex, and a Supima cotton of 0.3% by weight of 0.3% by weight of titanium oxide and a twist coefficient of 3.6 ( Knitting was performed with a stripe structure (FIG. 2) using a ring spun yarn No. 30 single yarn having a twist coefficient = twist number / English count ^1/2 ). Polyester filaments 84 dtex were arranged for the supply yarns 1, 2, 4 and 5, and Supima cotton No. 30 single yarn was arranged for the supply yarns 3 and 6. The knitting machine used was a 30-inch-28 gauge single knitting machine 3FA (Fukuhara Seiki). The mix ratio of spun yarn in the knitted fabric was 59%, and the mix ratio of cotton was 59%.

After opening the knitted fabric, using a liquid dyeing machine NS type manufactured by Hisaka Seisakusho, treated with the following formulation 1 at a bath ratio of 1:10 and a temperature of 95 ° C. for 60 minutes, then neutralized with acetic acid and washed with water. did.
Formulation 1: Caustic soda (made by Nippon Soda) 5g / L,
Scouring agent (Pitch Run L250, manufactured by Nikka Chemical Co., Ltd.) 2 g / L,
Sodium tripolyphosphate (manufactured by Tada Pharmaceutical Co., Ltd.) 2 g / L,
Hydrogen peroxide stabilizer (PLC7000 manufactured by Nikka Chemical Co., Ltd.) 1 g / L,
35% hydrogen peroxide 15ml / L
PERSOTHAL MAX (Nikka Chemical Co., Ltd. bath softener) 1g / L

Subsequently, only the polyester was single-dyed with a disperse dye using the same dyeing machine. Moreover, the softening process was performed in the dyeing machine after dyeing. The dyeing prescription and the finish prescription are shown in the following prescriptions 2 and 3.
Formula 2
Dyeing conditions: bath ratio 1:15, disperse dyeing 130 ° C. × 30 minutes ⇒ soaping twice, hot water, neutralization, and water washing.
Dyeing prescription: pH adjusting agent (acetic acid 0.2 g / l pH = 4), leveling agent (Misei Chemical Industry Co., Ltd. Dispa TL) 1 g / l, dispersive dye (Sumitomo Color Chemical Co., Ltd. Sumikaron BLUE E) -FBL) 1.0% owf
Dyeing conditions: bath ratio 1:15, disperse dyeing 130 ° C. × 30 minutes ⇒ reduction washing ⇒ hot water / water washing Formulation 3
Softening treatment: Softener EX-200 1.0% owf manufactured by Takamatsu Yushi Co., Ltd.
Further, after centrifugal dehydration, the amount of the material was adjusted by tentering and drying.

The obtained knitted fabric had a basis weight of 155 g / m ² , a thickness of 0.55 mm, a surface knitted fabric density of 39 courses / 2.54 cm, and 37 wales / 2.54 cm. The details and evaluation results of this knitted fabric are shown in Table 1. The finished knitted fabric has a dimensional change within −7% in the F-3 method, a large numerical value of frictional resistance, a low softness of the fabric, and a good numerical value of wrinkle recovery when wet. there were.

(Product prototype content)
An outer product of the front button was made from this fabric with the specifications shown in FIG.
(Practical laundry results)
200 pieces of this product were prepared and put into a continuous washing plant. For pressure dehydration, equipment from Asahi Seisakusho / ASP-350 was used. As a result, the cake shape after pressure dehydration was maintained, and the cake could be transferred to the next drying step without collapsing. Subsequently, after continuous tumble dryer, it was dried in a roll iron machine using Musashinokikai / R-832 in a raw state, and then folded using an automatic folding machine (Toto Folder Industry Co., Ltd./P4S). . The cloth made by the developed fabric has no problem with the roll ironing machine and can be folded up neatly with an automatic folding machine. Further, Table 1 shows the results of carrying out the wearing test using a 100% cotton circular knitted fabric (Comparative Example 1) as a comparison in the monitor wearing test. As a result, the garment made of the developed knitted fabric was evaluated as worn as 100% cotton knitted fabric.

Reference example 2
Z twist direction consisting of polyester filament flat yarn with 84 dtex of round cross section, 72 number of filaments, single yarn fineness of 1.17 dtex, and 100% of Supima cotton, kneaded with 0.3% by weight of titanium oxide according to Reference Example 1. A knitted fabric was obtained by knitting with the same knitting structure as in Reference Example 1 using a ring spun yarn No. 30 having a twist coefficient of 3.6, and prescribing a dyeing finish. Table 1 shows the details of the knitted fabric and the evaluation results.

Reference example 3
In accordance with Reference Example 1, 0.3% by weight of titanium oxide was kneaded in a Z twist direction consisting of a round cross section of 110 dtex, a filament count of 24, a single filament fineness of 4.58 dtex, a polyester filament flat yarn and 100% Supima cotton, A knitted fabric was obtained by knitting with the same knitting structure as in Reference Example 1 using a ring spun yarn No. 30 having a twist coefficient of 3.6, and prescribing a dyeing finish. Table 1 shows the details of the knitted fabric and the evaluation results.

Reference example 4
In accordance with Reference Example 1, 0.3% by weight of titanium oxide was kneaded in a Z-twist direction consisting of a round cross section of 110 dtex, a filament count of 48, a single filament fineness of 2.29 dtex, a polyester filament flat yarn and 100% Supima cotton, A knitted fabric was obtained by knitting with the same knitting structure as in Reference Example 1 using a ring spun yarn No. 30 having a twist coefficient of 3.6, and prescribing a dyeing finish. Table 1 shows the details of the knitted fabric and the evaluation results.

Example 5
2. Twisting factor consisting of polyester filament flat yarn with a round cross section of 84 dtex, filament count of 36, single yarn fineness of 2.33 dtex, and 100% Supima cotton kneaded with 0.3% by weight of titanium oxide according to Reference Example 1. No. 6 ring spun yarn No. 30 single yarn Z twisted yarn similar to No. 30 single yarn Z twist was used. Knitting was performed with the same striped knitting structure as in Reference Example 1 (FIG. 2). At this time, a polyester filament 84dtex was provided for the supply yarns 1, 2, 4 and 5, a Supima cotton Z twisted 30th single yarn was provided for the supplied yarn 3, and a Supima cotton S twisted 30th single yarn was provided for the supplied yarn 6. In the same manner as in Reference Example 1, a dyeing finish was formulated to obtain a knitted fabric. In the obtained knitted fabric, the skew rate of the knitted fabric after repeated washing 5 times was 1.2%, and almost no skew was observed. Table 1 shows the details of the knitted fabric and the evaluation results.

Reference Example 6
Ring No. 60 twins consisting of polyester filament flat yarn with a round cross section of 84 dtex, filament count of 36, single yarn fineness of 2.33 dtex, and 100% Supima cotton kneaded with 0.3% by weight of titanium oxide according to Reference Example 1. Using yarn (bottom twist 29.4 Twist / 2.54 cm, upper twist 20.6 Twist / 2.54 cm, Snart index 5.0), knitting with the same striped knitting structure as in Reference Example 1, and finishing in the same manner A knitted fabric was obtained by prescribing. The twin yarn used here had no torque, and the skew rate of the product after repeated washing 5 times in an automated washing plant was 0.8%, and almost no skew was observed. Table 1 shows the details of the knitted fabric and the evaluation results.

Reference Example 7
2. Twisting factor comprising a polyester filament flat yarn having a round cross-section of 110 dtex, a filament count of 48, and a single yarn fineness of 2.29 dtex, and 0.3% by weight of titanium oxide according to Reference Example 1, and 100% of Supima cotton. No. 6 ring spun yarn No. 30 single yarn Z-twisted yarn was knitted with a welt tentacle structure, and dyed and finished in the same manner as in Reference Example 1 to obtain a knitted fabric. The knitting structure is shown in FIG. Supima cotton Z-twisted 30 single yarn was provided for yarn supply 1, and full dull flat yarn 110 dtex / 48F was arranged for yarn 2. The obtained knitted fabric had a plain pattern, and the knitted structure had a lot of welt structures, and the wrinkle recovery property was poor when wet compared with the stripe pattern, and the cake shape after pressure dehydration was good. Table 1 shows the details of the knitted fabric and the evaluation results.

Reference Example 8
2. Twisting factor of polyester filament flat yarn having a round cross section of 167 dtex, 48 filaments, single yarn fineness of 3.48 dtex, and 100% Supima cotton kneaded with 0.3% by weight of titanium oxide according to Reference Example 7. No. 6 ring spun yarn No. 50 single yarn Z-twisted yarn was knitted with a welt tentacle structure, and dyed and finished in the same manner as in Reference Example 1 to obtain a knitted fabric. The knitting structure is shown in FIG. Supima cotton Z-twisted No. 50 single yarn was used for yarn supply 1, and polyester flat yarn 167 dtex / 48F was arranged for yarn supply 2. The obtained knitted fabric is a plain pattern, the knitted structure has a lot of welt structures, and since the polyester blend ratio is higher than that of Reference Example 7, the friction coefficient of the fabric is slightly low, and the roll iron compatibility is not excellent, It was able to cope enough. Table 1 shows the details of the knitted fabric and the evaluation results.

Reference Example 9
In accordance with Reference Example 7, 0.3% by weight of titanium oxide was kneaded and the cross section was 56 dtex, the number of filaments was 24, the single filament fineness was 2.33 dtex, a polyester filament flat yarn and Supima cotton having a twist coefficient of 3.6. A knitted fabric was obtained by knitting with a welt tentacle structure using a spinning spun twisted yarn No. 30 single yarn Z-twisted yarn over the entire surface, and a dyeing finish was prescribed in the same manner as in Reference Example 1 to obtain a knitted fabric. The knitting structure is shown in FIG. The obtained knitted fabric had a strong texture of spun yarn and a plain pattern, and the knitted structure had many welt structures, and the cheese shape retention after pressure dehydration was good. Table 1 shows the details of the knitted fabric and the evaluation results. Although the cotton blending ratio is high, the polyester filament is contained in the spun yarn, so the dimensional stability was not greatly reduced.

Example 10
2. Twisting factor comprising a polyester filament flat yarn having a round cross-section of 110 dtex, a filament count of 48, and a single yarn fineness of 2.29 dtex, and 0.3% by weight of titanium oxide according to Reference Example 1, and 100% of Supima cotton. No. 6 ring spun yarn No. 40 single yarn Z-twisted yarn similar to No. 40 single yarn S twisted yarn was knitted with a canopy knitting structure. The knitting structure is shown in FIG. Supima cotton Z-twisted No. 40 single yarn was arranged for feed yarn 1, and Supima cotton S-twisted No. 40 single yarn was arranged for feed yarn 3. A polyester filament 110 dtex was arranged in the yarn feed 2.4. In the same manner as in Reference Example 1, a dyeing finish was formulated to obtain a knitted fabric. The skew rate of the product after washing the obtained knitted fabric 5 times in an automated washing plant was 1.0%, and almost no skew was observed. Table 1 shows the details of the knitted fabric and the evaluation results.

Example 11
2. Twisting factor comprising a polyester filament flat yarn having a round cross-section of 110 dtex, a filament count of 48, and a single yarn fineness of 2.29 dtex, and 0.3% by weight of titanium oxide according to Reference Example 1, and 100% of Supima cotton. No. 6 ring spun yarn No. 50 single yarn Z-twisted yarn similar to No. 50 single yarn S-twisted yarn was knitted with a stripe (small) knitting structure. The knitting structure is shown in FIG. Polyester filaments were used for the feed yarn 1, Supima cotton Z-twisted No. 50 single yarn was provided for the feed yarn 2, and Supima Cotton S-twisted No. 50 single yarn was arranged for the feed yarn 3. In the same manner as in Reference Example 1, a dyeing finish was formulated to obtain a knitted fabric. The skew rate of the product after washing the resulting knitted fabric 5 times was 1.5%, and almost no skew was observed. Table 1 shows the details of the knitted fabric and the evaluation results.

Comparative Example 1
The yarn was knitted in a tense knitting structure using ring spun yarn No. 30 single yarn having a Z twist direction and a twist coefficient of 3.6 made of 100% Supima cotton. The knitting structure is shown in FIG. Except for the polyester dyeing step, a dyeing finish was formulated in the same manner as in Reference Example 1 to obtain a knitted fabric. Although the obtained knitted fabric was 100% cotton and excellent in wearing feeling, it was strong in shrinkage and skew after washing. Table 1 shows the details of the knitted fabric and the evaluation results.

Comparative Example 2
Z twist in which 0.3% by weight of titanium oxide is kneaded in accordance with Reference Example 1, a polyester filament processed yarn having a round cross section of 84 dtex, a filament count of 36, and a single yarn fineness of 2.33 dtex, Supima cotton and polyester are mixed. Knitting was performed with a double knit structure using ring spun yarn No. 40 single yarn having a direction and a twist coefficient of 3.6. The knitting structure is shown in FIG. In the same manner as in Reference Example 1, a dyeing finish was formulated to obtain a knitted fabric. The clothing using the obtained knitted fabric had poor cheese shape retention in the pressure dehydration process of the automated plant. Table 1 shows the details of the knitted fabric and the evaluation results.

Comparative Example 3
Z twist composed of polyester filament false twisted yarn with 110 dtex of round cross section, 48 filaments, single yarn fineness of 2.29 dtex, and 100% Supima cotton kneaded with 0.3% by weight of titanium oxide according to Reference Example 1. A knitted fabric was obtained by knitting in the same knitting structure as in Reference Example 1 using a ring spun yarn No. 40 single yarn having a direction and a twist coefficient of 3.6, and prescribing a dyeing finish. In the garment using the obtained knitted fabric, the polyester filament is false twisted yarn, so the cheese shape retention was poor in the pressure dehydration process of the automation plant. Table 1 shows the details of the knitted fabric and the evaluation results.

Comparative Example 4
In accordance with Comparative Example 3, 0.3% by weight of titanium oxide was kneaded, a round cross section of 167 dtex, a filament number of 48, a single filament fineness of 3.48 dtex, a polyester filament false twisted yarn and a cationic dyeable polyester of 167 dtex, the number of filaments 144, a processed yarn having a single yarn fineness of 1.16 was knitted with the knitting structure shown in FIG. 3, and a dyeing finish was prescribed in the same manner as in Reference Example 1 to obtain a knitted fabric. Since the garment using the obtained knitted fabric does not contain cotton and the polyester filament is false twisted yarn, the cheese shape retention was poor in the pressure dehydration process of the automated plant. Table 1 shows the details of the knitted fabric and the evaluation results.

Comparative Example 5
Warp yarn 30% polyester 70% blended yarn 20/1 pre-dyed yarn, horizontal yarn same pre-dyed yarn as warp density 81 / 2.54cm, weft density 60 / 2.54cm Made a fabric. The details and evaluation results of the obtained fabric are shown in Table 1.

  According to the present invention, the automatic washing-compatible garment having process passability and washing durability comparable to that of an automatic washing-compatible garment made of ordinary woven fabric, and excellent in the stretch feeling and good wearing feeling of the knit. The contribution in the industry is significant because it can be provided.

Claims (3)

This is a circular knitted single knit that contains 80% by weight or more of spun yarns and polyester filaments whose short fibers are made of cotton fibers, and the weight ratio of spun yarns and polyester filaments is 10:90 to 80:20. to 250 g / ^{m 2,} and thickness Ri 0.4~0.8mm der, it includes a spun yarn S twist and Z twist to the knitted fabric, that each of the spun yarn are mixed knitting A knitted fabric for automated laundry plants. 2. The knitted fabric for an automated laundry plant according to claim 1, wherein the single filament fineness of the polyester filament is 0.5 to 6 dtex. A clothing for an automated laundry plant comprising the knitted fabric for an automated laundry plant according to claim 1 or 2 .