KR102579557B1 - Method for manufacturing tricot warp knitted fabric having long pile double-sided raising using polyester flat microfine yarn - Google Patents

Abstract

The present invention is a double-sided brushed fabric with brushing of 10 mm or more on both sides of the front bar and back bar, and a method for manufacturing a tricot warp knitted fabric with long-pile double-sided brushing using polyester flat ultrafine yarns, and a double-sided brushed tricot manufactured by the manufacturing method. Regarding warp knitted fabric, in the present invention, polyester yarn (PET) is prepared, the yarn is pretreated, and the pretreated yarn is warp knitted using a tricot warp knitting machine to prepare a tricot warp knit, and the warp knitted fabric is It consists of a surface processing step of forming a front surface brushing; and a back processing step of forming a back brushing of the warp knitted fabric,
The surface processing step includes a first heat treatment setting step of setting the warp knitted tricot warp knitted fabric to high temperature heat treatment at a temperature of 220 ± 5° C. and a heat treatment machine processing speed of 12 m/min to 13 m/min;
A first brushing processing step of forming a long pile brush of 10 mm or more on the front surface of the fabric for which the heat treatment setting has been completed; And a dyeing step of continuously performing polishing and shearing processes on the fabric on which the first raising processing step has been completed, and then performing a dyeing process,
The back processing step is a secondary heat treatment setting step of setting the single-sided brushed fabric for which the surface processing step has been completed to high temperature heat treatment at a temperature of 220 ± 5°C and a heat treatment machine processing speed of 16 m/min to 18 m/min;
A secondary brushing process step of forming secondary brushing of 10 mm or more on the rear surface of the fabric for which the secondary heat treatment setting has been completed; and continuously performing polishing and shearing processes on the fabric for which the secondary brushing processing step has been completed, using a continuous tumbler. Washing processing at a temperature of 150 to 160°C and a fabric transfer speed of 18 to 20 m/min; And the brushed fabric on which the washing process has been completed is characterized in that it includes a tentering step of width processing in a tenter to satisfy a fabric width of 84 inches and a fabric unit weight of 680 ± 20 g/yd. A method of manufacturing a tricot warp knitted fabric having long-pile double-sided brushing using flat ultrafine yarns and a method of manufacturing the same are disclosed.

Description

Method for manufacturing tricot warp knitted fabric having long pile double-sided raising using polyester flat microfine yarn}

The present invention relates to a method of manufacturing a tricot warp knitted fabric with long-pile double-sided brushing using polyester flat ultrafine yarns, which is a double-sided brushed fabric with brushing of 10 mm or more on both sides of the front bar and back bar.

[R&D project that supported this invention]

[Assignment number] P20210032

[Ministry Name] Gyeonggi Province Economic and Science Promotion Agency

[Research project name] Gyeonggi-do technology development project

[Research project name] Development of the world's first double-sided 10mm home textile fabric by modifying warp knitting equipment and applying flat ultra-fine yarns

[Contribution rate] 1/1

[Name of organization performing the task] Yongjin Textile

[Research period] 2021.08.01~2022.07.31

Among the textiles for home interior use, the bedding field is a field that comes into direct contact with human skin and is a field with high growth potential as a high-value, high-end, functional field.

Recently, as the number of single-person households has increased, there has been a change in the bedding market, and blankets for single-person households that find it difficult to wash blankets due to small washing machine capacities are emerging as a main product.

However, recently, as the production and technology levels in developing countries such as China and Southeast Asia have increased, the quality gap with domestic products has been narrowing. As a result, double-sided products of 10 mm or more can be differentiated from the existing brushed fabric, 5 mm double-sided tricot, and are made of flat microfine material that can compete in price. It is a double-sided tricot warp knitted fabric with brushed edges, and there is a need to strengthen competitiveness by developing various bedding materials for thermal insulation and post-processing.

Republic of Korea Patent Publication No. 10-2016-0074737 Republic of Korea Patent Publication No. 10-1222658 Republic of Korea Patent Publication No. 10-0906928 Republic of Korea Patent Publication No. 10-0724773

In the present invention, in order to minimize hair shedding while enabling replacement for wool materials that are currently sold at high prices, a long pile warp knit pile structure was designed by modifying the tricot equipment, and dyeing was performed taking into account thermal insulation and trends in target products. Establishing processing technology, applying brushing and processing technology to develop appearance characteristics similar to natural material wool, using 75D/144F flat yarn instead of existing 65D/204F DTY yarn to secure price competitiveness in the relevant market. Furthermore, the problem is to provide a manufacturing method of tricot warp knitted fabric with long-pile double-sided brushing using polyester flat microfine yarns that can pursue ethical fashion as a recently trending vegan product.

The method of manufacturing a tricot warp knitted fabric with long pile brushing using polyester flat ultrafine yarn according to the present invention, which solves the above problems, is

After preparing polyester yarn (PET) and pre-treating the yarn, knitting the pre-treated yarn using a tricot warp knitting machine to prepare a tricot warp knit, and forming a front surface brushing of the warp knit, a surface processing step of ;and

A back processing step of drying and heat treatment using a softener and a discharge agent in a tenter heat treatment process after dyeing and dehydration to form a back brush of the warp knitted fabric;

A first heat treatment setting step of setting the warp knitted tricot warp knitted fabric, on which the surface processing step and the back processing step have been completed, to high temperature heat treatment at a temperature of 220 ± 5°C and a heat treatment machine processing speed of 12 m/min to 13 m/min;

A first brushing processing step of forming a long pile brush of 10 mm or more on the front surface of the fabric for which the heat treatment setting has been completed; and

It includes a dyeing step of continuously performing polishing and shearing processes on the fabric for which the first brushing processing step has been completed, and then performing a dyeing process,

A secondary heat treatment setting step of setting the single-sided brushed fabric for which the surface processing step has been completed to high temperature heat treatment at a temperature of 220 ± 5°C and a heat treatment machine processing speed of 16 m/min to 18 m/min;

A secondary brushing processing step of forming secondary brushing of 10 mm or more on the rear surface of the fabric for which the secondary heat treatment setting has been completed;

Continuously performing polishing and shearing processes on the fabric for which the secondary raising processing step has been completed, and washing the fabric in a continuous tumbler at a temperature of 150 to 160°C and a fabric transfer speed of 18 to 20 m/min; and

A sheet using polyester flat ultrafine yarn, characterized in that the brushed fabric with the washing process completed includes a tentering step of width processing in a tenter to satisfy a fabric width of 84 to 86 inches and a fabric unit weight of 680 ± 20 g/yd. It is characterized by having a pile on both sides.

Here, the tricot warp knitted fabric is warp knitted through a 3 bar (L1, L2, L3) tricot warp knitting machine, and the polyester SD yarn that has undergone the pretreatment process is used on the back bar (L1) and the above on the middle bar (L2). The polyester SD yarn that has gone through the pretreatment process and the polyester flat yarn that has gone through the pretreatment process are interwoven at the interweaving ratio on the front bar (L3) to tricot to satisfy a width of 105 inches and a weight of 720±20g/yd,

Each of the back bars (L1) uses polyester SD 50D/24F, the middle bar (L2) uses polyester SD 50D/24F, and the front bar (L3) uses polyester. (Polyester) Using flat yarn 75D/144F, it is woven in a zigzag manner at the pitch interval of the line knitting needle below, and is characterized by warp knitting so that the loop length is 10 to 11 mm.

Back bar (L1): 23 10

Middle bar (L2): 10 12

Front Bar (L3): 10 2019, 10 2322

Here, the formed ridge height of the cam constituting the tricot warp knitting machine used when weaving the flat knit fabric is 8 to 9 mm, and the roller forming the brush is characterized by using a roller with a diameter of 27 to 29 cm. do.

Here, the first brushing processing step is a process of forming long-term hair of the front bar portion, and the brush is formed under processing conditions of a brushing needle roller rotation speed of 18 m/min to 20 m/min and a brush rotation speed of 14 to 16 rpm, The second brush processing step is a process of forming long-term hair on the back, and is characterized by forming the brush under processing conditions of a brush knitting roller rotation speed of 12.5 m/min to 14 m/min and a brush rotation speed of 14 to 16 rpm.

Here, polishing after forming the front bar in the surface processing step and polishing after forming the secondary brush in the rear part are repeated 2 to 4 times at 150 to 160 ℃ and the cylinder rotation speed is 18 to 20 rpm per minute. do.

Here, the dyeing process in the surface processing step uses a disperse dye, and includes dye 0.005-0.006% owf, acetic acid 0.003-0.004 g/L, and dispersant 0.004-0.005 g/L, and the bath ratio is 100: Immerse in a salt solution of 80 degrees Celsius at a temperature of 50~60℃ for 30~40 minutes, increase the temperature at a temperature increase rate of 55~65℃/min, and level it at a temperature of 125~130℃ for 35~40 minutes, then lower the temperature to 85~85℃. Dyeing is completed by cooling to a temperature of 50°C or lower under the condition of 95°C/min, and the dyed fabric is used.

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The manufacturing method provided by the present invention can provide a tricot warp knitted fabric with long-pile double-sided brushing and a brushed pile of 10 mm or more on the front and back sides, which was difficult to manufacture with a conventional tricot warp knitting machine.

In addition, other effects of the present invention are

[Technical achievements]

By overcoming the limitations (1~5mm) of existing Tricot Pile products, the competitive edge of domestic pile products can be secured by developing an organization that improves the touch and warmth of existing products and improves the shortcomings of hair shedding.

It is a process technology that can achieve a wool-like appearance and function, and can be used as an application replacement technology for fur materials, which are expensive products.

[Business Performance]

It is possible to link sales through continuous technology base with existing bedding specialist companies such as Jeong-on bedding and Line Textile.

It is possible to manufacture and sell various product groups (clothing, home textiles, etc.) using the warp knitted fabric provided in the present invention.

Figure 1 is a process diagram showing an example of a method for manufacturing a tricot warp knitted fabric with long-pile double-sided brushing using the polyester flat ultrafine yarn of the present invention.
Figure 2 is an organization chart showing an example of the warp knit tissue design of a tricot warp knit fabric according to an embodiment of the present invention.
Figure 3 shows the shape of a cam constituting the tricot warp knitting machine used in the present invention.
Figure 4 shows an example of a brush forming roller constituting the tricot warp knitting machine used in the present invention.

Hereinafter, the present invention will be described in more detail.

In the present invention, after warp knitting with an existing tricot warp knitting machine, the disadvantages of being able to provide a fabric that satisfies the physical properties as a brushed fabric only within 5 mm when forming the length of the brushed pile are the heat treatment temperature of the processes from warp knitting to post-processing, A method of manufacturing a tricot warp knitted fabric with long-pile double-sided brushing using polyester flat microfiber yarn that forms a brushed pile of 10 mm or more on the front and back by improving each process condition, such as processing speed, dyeing method, and emulsion treatment, to the optimal condition. The purpose is to provide,

When described with reference to the attached drawing FIG. 1, the method of manufacturing a tricot warp knitted fabric having a long pile brush using polyester flat ultrafine yarn according to the present invention is

After preparing polyester yarn (PET) and pre-treating the yarn, knitting the pre-treated yarn using a tricot warp knitting machine to prepare a tricot warp knit, and forming a front surface brushing of the warp knit, a surface processing step of ; and a back processing step of forming the back brush of the warp knitted fabric,

The surface processing step is a first heat treatment setting step of setting the warp knitted tricot warp knitted fabric to a high temperature heat treatment at a temperature of 220 ± 5 ° C. and a heat treatment machine processing speed of 12 m / min to 13 m / min; and the fabric for which the heat treatment setting is completed. A first brushing processing step of forming long pile brushes of 10 mm or more on the front surface of; And a dyeing step of continuously performing a polishing and shearing process on the fabric for which the first raising processing step has been completed, followed by a dyeing process. In the tenter drying process after dyeing and dehydration, silicone softener and 5% antistatic agent are added. The drying process is carried out in a 2% used tenter.

The back processing step is a secondary heat treatment setting step of setting the single-sided brushed fabric for which the surface processing step has been completed to high temperature heat treatment at a temperature of 220 ± 5°C and a heat treatment machine processing speed of 16 m/min to 18 m/min; and, the secondary heat treatment setting. A secondary brushing process step of forming secondary brushing of 10 mm or more on the rear surface of the completed fabric; and the fabric for which the secondary brushing processing step has been completed is continuously subjected to polishing and shearing processes, and a temperature of 150 to 160 in a continuous tumbler. Washing processing under conditions of ℃ and fabric transfer speed of 18 to 20 m/min; And the brushed fabric on which the washing process has been completed is characterized in that it includes a tentering step of width processing in a tenter to satisfy a fabric width of 84 to 86 inches and a fabric unit weight of 680 ± 20 g/yd.

Preferably, the tricot warp knitted fabric is warp knitted through a 3 bar (L1, L2, L3) tricot warp knitting machine, and polyester SD yarn that has undergone the pretreatment process is used on the back bar (L1) and on the middle bar (L2). The polyester SD yarn that has gone through the pretreatment process is interwoven with the polyester flat yarn that has gone through the pretreatment process on the front bar (L3) at a knitting ratio to tricot a width of 105 inches and a weight of 720±20g/yd,

For each of the polyester yarns, the back bar (L1) uses Polyester SD 50D/24F, the middle bar (L2) uses Polyester SD 50D/24F, and the front bar (L3) uses polyester SD 50D/24F. ) uses polyester flat yarn 75D/144F, is woven in a zigzag manner at the pitch interval of the line knitting needle below, and is characterized by being warp knitted to have a loop length of 10 to 11 mm.

<Organization chart>

Back bar (L1): 23 10

Middle bar (L2): 10 12

Front Bar (L3): 10 2019, 10 2322

Here, only 50/24SD yarn can be used for L-1 and L-2 yarn, and regular DTY yarn already in use can be used for L-3 pile yarn, but the yarn used in the developed product is 75/144 flat DTY yarn, which is piled cotton. It is used to improve the raising properties after raising the hair.

According to the present invention, if the primary or secondary heat treatment setting temperature is below the critical value range, there is a problem of poor cutting when forming the brush, and if it exceeds the critical value range, the brush is made of PET polymer in the fabric. As the fabric becomes hard, there may be a problem that it does not brush and falls apart when cutting.

According to the present invention, the formed ridge height of the cam constituting the tricot warp knitting machine used when weaving the warp knitted fabric is 8 to 9 mm, and the roller for forming the brush is preferably used with a diameter of 27 to 29 cm. Its technical feature is that it uses a roller with a diameter of 28 cm.

According to the present invention, the first brushing processing step is a process of forming long-term hair of the front bar portion, forming brushing under processing conditions of a brushing knitting roller rotation speed of 18 m/min to 20 m/min, and the second brushing processing step. This is the process of forming long-term hair on the back side, and the brush is formed under processing conditions of a brush knitting roller rotation speed of 12.5 m/min to 14 m/min.

At this time, the length of the brush formed in the first and second brush processing steps is preferably 10 mm or more, preferably 10 to 11 mm.

According to the present invention, polishing after forming the brush on the front bar in the surface processing step and polishing after forming the secondary brush on the rear part are repeated 2 to 4 times at 150 to 160 ℃ and the cylinder rotation speed is 18 to 20 times per minute. It is desirable to do so.

According to the present invention, the dyeing process in the surface processing step uses a disperse dye, and includes 0.005 to 0.006% owf of dye, 0.003 to 0.004 g/L of acetic acid, and 0.004 to 0.005 g/L of dispersant. Immerse in a salt solution with a bath ratio of 100:80 at a temperature of 50 to 60°C for 30 to 40 minutes, raise the temperature at a rate of 55 to 65°C/min, level the salt at a temperature of 125 to 130°C for 35 to 40 minutes, and then lower the temperature. It is preferable to complete dyeing by cooling to a temperature of 50°C or lower under the condition of 85 to 95°C/min, and to use the dyed fabric.

The double-sided brushed tricot warp knitted fabric manufactured by the manufacturing method according to the present invention disclosed above has brushing of 10 mm or more in pile length on the front surface, brushing of 10 mm or more on the back surface, and is processed to have a fabric width of 84 to 86 inches, It is possible to provide a tricot warp knitted fabric with long-pile double-sided brushing using polyester flat ultrafine yarns with long-pile brushing of 10 mm or more that satisfies the fabric unit weight of 680 ± 20 g/yd.

Hereinafter, in order to explain the present invention in more detail, polyester yarns are selected according to the manufacturing method disclosed above, and polyester yarns according to the purpose are arranged on the L1, L2, and L3 guides of a 3 bar tricot warp knitting machine, and are attached to FIG. 2. As described above, a warp knitted fabric was prepared by designing an organization chart, and the fabric was processed under the process conditions attached to Figure 1 to prepare a double-sided brushed fabric with brushes of 10 mm in length on the front and back sides, and then various physical properties were tested. I tried it.

The test content disclosed below is an example for explaining the present invention, and the present invention is not limited to the following content, and should be judged based on the scope of the invention described in the patent claims. This fact means that anyone skilled in the art can make any number of modifications within a limited scope according to the specific scope of the invention described in the patent claims.

<Fabric processing process>

1) Preparation of raw material: Prepare polyester yarn and knit it with a tricot warp knitting machine.

L1: Polyester SD 50D/24F (single yarn fineness 10D class)

L2: Polyester SD 50D/24F (single yarn fineness 10D class)

L3: Polyester flat microfiber 75D/144F (single yarn fineness 0.3, 0.5D class)

<Organization chart (needle spacing)>

L1 : 23 10

L2 : 10 12

L3:10 2019

L1, which forms the ground tissue, is made of spandex 80D, and L2 is made of spandex 80D.

Its characteristic is that it is knitted using 6%+polyester SD 50D/24F. It is knitted using polyester SD 50D/24F.

2) Dyes and dyeing conditions

The dye used in the test was a disperse dye, and the dye color and dye solution conditions are as follows.

Color L/PINK Dye used YELLOW 3GE 0.005%. RED FB 0.0165%, BLUE 2BLN 0.005% used, dispersant 0.005% used, high pressure rapid dyeing performed.

Dyeing conditions include raising the temperature at a rate of 2°C/min, dyeing at 130°C for 45 minutes, and slowly cooling to 65°C at a rate of 2°C/min. The dyeing conditions are bath ratio 100:80, buffer 0.0004g/L. , the dispersant was dyed with low-temperature disperse dye under the condition of 0.005g/L.

Under the same conditions as above, a tricot double-sided brushed warp knitted fabric with a brushed length of 10 mm on both front and back sides was manufactured using a 3 bar tricot warp knitting machine using the manufacturing method illustrated in Figure 1. The physical properties of the manufactured warp knit fabric were tested, and the results are shown in Table 1 below.

Evaluation items
(Main performance, physical properties, etc. specifications) unit Evaluation results Assessment Methods File length (double-sided) mm 10mm - Fabric width (raw paper, processed paper) inches 105(84) KS K ISO 22198 production speed rpm 1,300 On-site evaluation Dimensional change rate % ±5 KS K ISO 5077 Washing fastness class Level 3~4 KS K ISO 105-C06 Sweat fastness class Level 3~4 KS K ISO 105-E04 water fastness class Level 3~4 KS K ISO 105-E01 warmth % 35 KS K 0560

As a result of Table 1 above, the production speed is lower than before, but the production speed is not as high as before because knitting must be skipped over 20 mm in order to form a brush of 10 mm or more.

Looking at the results in Table 1 above, it can be seen that the double-sided brushed tricot warp knit fabric provided by the manufacturing method according to the present invention can provide a double-sided brushed warp knit fabric with excellent physical properties used for household home interior. there is.

Claims (7)

The manufacturing method of tricot warp knitted fabric with long pile brushing using polyester flat microfiber yarn is
After preparing polyester yarn (PET) and pre-treating the yarn, knitting the pre-treated yarn using a tricot warp knitting machine to prepare a tricot warp knit, and forming a front surface brushing of the warp knit, a surface processing step of ;and
A back processing step of drying and heat treatment using a softener and a discharge agent in a tenter heat treatment process after dyeing and dehydration to form a back brush of the warp knitted fabric;
A first heat treatment setting step of setting the warp knitted tricot warp knitted fabric, on which the surface processing step and the back processing step have been completed, to high temperature heat treatment at a temperature of 220 ± 5°C and a heat treatment machine processing speed of 12 m/min to 13 m/min;
A first brushing processing step of forming a long pile brush of 10 mm or more on the front surface of the fabric for which the heat treatment setting has been completed; and
It includes a dyeing step of continuously performing polishing and shearing processes on the fabric for which the first brushing processing step has been completed, and then performing a dyeing process,
A secondary heat treatment setting step of setting the single-sided brushed fabric for which the surface processing step has been completed to high temperature heat treatment at a temperature of 220 ± 5°C and a heat treatment machine processing speed of 16 m/min to 18 m/min;
A secondary brushing processing step of forming secondary brushing of 10 mm or more on the rear surface of the fabric for which the secondary heat treatment setting has been completed;
Continuously performing polishing and shearing processes on the fabric for which the secondary raising processing step has been completed, and washing the fabric in a continuous tumbler at a temperature of 150 to 160°C and a fabric transfer speed of 18 to 20 m/min; and
A sheet using polyester flat ultrafine yarn, characterized in that the brushed fabric with the washing process completed includes a tentering step of width processing in a tenter to satisfy a fabric width of 84 to 86 inches and a fabric unit weight of 680 ± 20 g/yd. Method for manufacturing tricot warp knitted fabric with pile double-sided brushing.
According to claim 1,
The tricot warp knitted fabric is warp knitted through a 3 bar (L1, L2, L3) tricot warp knitting machine, and the back bar (L1) is knitted with polyester SD yarn that has undergone the pretreatment process, and the middle bar (L2) is knitted using the pretreatment process. The polyester SD yarn that has gone through the above process and the polyester flat yarn that has gone through the pretreatment process above are interwoven on the front bar (L3) at a knitting ratio to tricot a width of 105 inches and a weight of 720±20g/yd,
Each of the back bars (L1) uses polyester SD 50D/24F, the middle bar (L2) uses polyester SD 50D/24F, and the front bar (L3) uses polyester. (Polyester) Flat yarn 75D/144F is used, woven in a zigzag manner at the pitch interval of the line knitting needle below, and long-pile double-sided brushing using polyester flat ultrafine yarn, characterized in that it is warp knitted to have a loop length of 10 to 11 mm. Method for manufacturing tricot warp knitted fabric having.
Back bar (L1): 23 10
Middle bar (L2): 10 12
Front Bar (L3): 10 2019, 10 2322
According to claim 1,
Poly, characterized in that the ridge height of the cam constituting the tricot warp knitting machine used when weaving the warp knitted fabric is 8 to 9 mm, and the roller forming the brush is a roller with a diameter of 27 to 29 cm. Manufacturing method of tricot warp knitted fabric with long-pile double-sided brushing using ester flat ultrafine yarn.
According to claim 1,
The first brushing processing step is a process of forming long-term hair on the front bar portion, and the brushing is formed under processing conditions of a brushing knitting roller rotation speed of 18 m/min to 20 m/min, and the second brushing processing step is a process of forming long-term hair on the back side. Manufacturing of a tricot warp knitted fabric with long-pile double-sided brushing using polyester flat microfiber yarn, characterized in that the brush is formed under processing conditions of a brush knitting roller rotation speed of 12.5 m/min to 14 m/min in the forming process. method. According to claim 1,
Poly, characterized in that polishing after the formation of the front bar portion in the surface processing step and polishing after the secondary brush formation of the rear portion are repeated 2 to 4 times at 150 to 160 ° C. and the cylinder rotation speed is 18 to 20 rpm per minute. Manufacturing method of tricot warp knitted fabric with long-pile double-sided brushing using ester flat ultrafine yarn.
The method of claim 1, containing 0.005-0.006% owf of dye, 0.003-0.004 g/L of acetic acid, and 0.004-0.005 g/L of dispersant, and a dye solution with a bath ratio of 100:80 and a dye solution temperature of 50-60°C. , soaked for 30 to 40 minutes, raised at a temperature increase rate of 55 to 65°C/min, leveled at a temperature of 125 to 130°C for 35 to 40 minutes, and then lowered to 50°C under the condition of a drop temperature of 85 to 95°C/min. A method of manufacturing a tricot warp knitted fabric with long-pile double-sided brushing using polyester flat ultrafine yarn, characterized in that dyeing is completed by cooling to below and using the dyed fabric.
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