Description

APPARATUS AND METHOD FOR MANUFACTURING SHAPE

RETENTION SILK

Technical Field

[1] The present invention relates to an apparatus and method for manufacturing a shape retention silk; and, more particularly, to an apparatus and method for manufacturing a shape retention silk, which prevent a silk fabric immersed in a salt shrinkage treatment liquid during a post-treatment from being changed by a salt shrinkage treatment liquid or a water, and uniformly retains a shape or a wrinkle of a silk fabric by performing a salt shrink process for the wrinkle of a silk fabric having various patterns under a tension-free. Background Art

[2] Recently, textile-fashion products move toward a natural textile, and a silk material is prominent as a natural textile. A trend of the silk material is predicted to sustain for at least 10 years. A consumer requests silk products having various materials and functions.

[3] Especially, it spreads for people that silk products are a high rank textile due to the characteristic of relative scarcity, gloss, flexibility and excellent clothes. However, the silk products have several demerits including the inconvenience of clothes management, wrinkle retention, size retention, and contraction retention for water. The shape retention and the contraction by water are big problems.

[4] However, a pure silk fabric of 100% can have the same shape with a chemical textile, but because the pure silk fabric of 100% do not have plasticity, it is difficult to retain a wanted shape of the silk fabric if the silk fabric gets wet through a process or an absorption of moisture.

[5] To solve this problem, a union cloth, a mixed yarn product of a chemical textile, cotton, wool and a rayon, or a salt shrinkage treatment process using the contraction phenomenon of a silk are used for the silk fabric.

[6] Although this salt shrinkage treatment process is disclosed in Korean Patent Publications (Patent publication number: 10-2001-0066206), and the shape and the contraction of a fabric for water are retained little through the salt shrinkage treatment process, it is difficult to implement various patterns using a wrinkle process and to implement a clear wrinkle on the fabric.

[7] To solve this problem, it is proposed to implement a shape of a chemical textile on a silk fabric by treating the silk fabric having various patterns through a special process including a ripple process and an uneven process.

[8] However, because the silk fabric is immersed and processed in a treatment liquid for a predetermined time to perform a salt shrinkage process for a shape retention process of the silk fabric, and the shape of the silk fabric is changed when the silk fabric is immersed under a water, it is impossible to perform the salt shrinkage process while the special process including the ripple process and the uneven process is performed.

[9] Moreover, after the salt shrinkage process, the silk products do not have a three- dimensional pattern, and just have a flat pattern or a non-pattern.

[10] That is, it is impossible to apply the salt shrinkage process and the ripple p rocess/ uneven process to the silk fabric at the same time.

[11] Accordingly, it is requested to perform the salt shrinkage process for implementing a three-dimensional pattern while the special process including the ripple process and the uneven process are performed so that various three-dimensional patterns and a clear pattern of a chemical textile are implemented on the silk fabric. Disclosure of Invention Technical Problem

[12] It is, therefore, an object of the present invention to provide to an apparatus and method for manufacturing a shape retention silk, which prevent a silk fabric immersed in a salt shrinkage treatment liquid during a post-treatment from being changed by a salt shrinkage treatment liquid or a water, and uniformly retains a shape or a wrinkle of a silk fabric by performing a salt shrink process for the wrinkle of a silk fabric having various patterns under a tension-free.

[13] It is another object of the present invention to provide an apparatus and method for manufacturing a shape retention silk, which retains a three-dimensional pattern and a clear line after the salt shrinkage process by retaining a shape during the salt shrinkage process when a silk fabric on which a ripple process and an uneven process are performed through a bonding process is immersed to a treatment liquid so that various patterns and a clear line of a chemical textile are implemented on a silk fabric.

[14] It is another object of the present invention to provide an apparatus and method for manufacturing a shape retention silk, which uniformly forming a shape in a salt shrinkage process irrespective of a tension by removing the tension which is applied to a silk fabric in the salt shrinkage process.

[15] It is another object of the present invention to provide an apparatus and method for manufacturing a shape retention silk, which removes a salt which is attached to a silk fabric using an ultrasonic wave after a salt shrinkage process.

[16] Other objects and advantages of the present invention can be understood by the following description, and become apparent with reference to the embodiments of the present invention. Also, it is obvious to those skilled in the art of the present invention

that the objects and advantages of the present invention can be realized by the means as claimed and combinations thereof. Technical Solution

[17] In accordance with another aspect of the present invention, there is provided a manufacturing method and a n apparatus for implementing the same, which transfers a silk fabric under a tension-free and performs a salt shrinkage treatment by circulating a salt shrinkage treatment liquid filled in a salt shrinkage treatment tank, or compressing a silk fabric between a dual standing belt and rotating the dual standing belt so that the silk fabric having various patterns is prevented from being changed by a water or a salt shrinkage treatment liquid.

[18] In accordance with another aspect of the present invention, there is provided an apparatus for manufacturing a shape retention silk, including: a salt shrinkage treatment tank for transferring a silk fabric without a mechanical tension by immersing a silk fabric in a salt shrinkage treatment liquid and circulating the salt shrinkage treatment liquid.

[19] In accordance with an aspect of the present invention, there is provided an apparatus for manufacturing a shape retention silk, including: a salt shrinkage treatment tank for transferring a silk fabric immersed in a salt shrinkage treatment liquid under a tension- free by compressing the silk fabric having an even or ripple pattern with a compressing unit and moving the compressing unit.

[20] In accordance with another aspect of the present invention, there is a method for manufacturing a shape tension silk, including: transferring a silk fabric under a tension-free and performing a salt shrinkage treatment by circulating a salt shrinkage treatment liquid filled in a salt shrinkage treatment tank, or compressing a silk fabric between a dual standing belt and rotating the dual standing belt so that the silk fabric having various patterns is prevented from being changed by a water or a salt shrinkage treatment liquid.

Advantageous Effects

[21] As mentioned above, the present invention retains a shape of a silk fabric by performing a salt shrinkage process which transfers and immerses the silk fabric under a tension-free after bonding a thermal- shrinking fabric to the silk fabric which is different from a conventional salt shrinkage process. In the present invention, a width of the silk fabric is adjusted easily, and various patterns including a silk printing can be implemented on the silk fabric to overcome a conventional pattern limitation having 3-4 patterns.

[22] Moreover, the present invention minimizes a remnant salt by using a silicon surface active agent (that is, salt eliminator), and smoothes a salt shrinkage fabric through a

refining process.

[23] Further, the present invention improves reproducibility through an integral salt shrinkage process, and implements a mass production of a shape retention silk by automating a salt shrinkage process instead of a manual salt shrinkage process.

[24] Also, in the present invention, a silk fabric of a wanted width having a three- dimensional pattern can be fabricated, and the clarity of the pattern can be improved by attaching the silk pattern to a thermal-shrinking fabric.

[25] Moreover, the present invention can apply a silk fabric to various clothes, e.g., a women formal dress, a three-dimensional pattern fabric for a wedding dress, which are fabricated by a conventional chemical textile, by fabricating the silk fabric of a three- dimensional pattern having the shrinkage rate of 3-5% to the washing.

[26] Accordingly, the present invention can satisfy a consumer by fabricating new silk products having a silk characteristic, and can provide new leap to treatment companies of a silk fabric which has a more difficult treatment condition than other textiles by activating a silk industry. Brief Description of the Drawings

[27] FIG. 1 illustrates a width cross section of an apparatus for fabricating a shape retention silk in accordance with an embodiment of the present invention.

[28] FIG. 2 illustrates a dual standing belt shown in FIG. 1.

[29] FIG. 3 is a top view of a salt shrinkage treatment tank shown in FIG. 1 to illustrate a flow of a salt shrinkage treatment liquid by a circulation pump.

[30] FIG. 4 shows a flowchart illustrating a method for fabricating a shape retention silk in accordance with a first embodiment of the present invention.

[31] FIG. 5 shows an image of a salt-shrinkage fabric having a thermal-shrinkage fabric generated using a method for fabricating a shape retention silk in accordance with a first embodiment of the present invention.

[32] FIG. 6 shows an image of a salt-shrinkage fabric after a melamine resin printing process generated using a method for fabricating a shape retention silk in accordance with a first embodiment of the present invention.

[33] FIG. 7 shows another image of a salt-shrinkage fabric having a thermal- shrinkage fabric generated using a method for fabricating a shape retention silk in accordance with a first embodiment of the present invention.

[34] FIG. 8 shows a flowchart illustrating a method for fabricating a shape retention silk in accordance with a second embodiment of the present invention.

[35] FIG. 9 shows an image of a salt-shrinkage fabric after a wrinkle forming process of a fabric using a press according to a method for fabricating a shape retention silk in accordance with a second embodiment of the present invention.

[36] FIG. 10 shows a flowchart illustrating a method for fabricating a shape retention silk in accordance with a third embodiment of the present invention.

[37] FIG. 11 shows an image of a salt-shrinkage fabric after a variegation process of a fabric using a method for fabricating a shape retention silk in accordance with a third embodiment of the present invention. Best Mode for Carrying Out the Invention

[38] As mentioned above, the advantages, features and aspects of the invention will become apparent from the following description of the embodiments with reference to the accompanying drawings, which is set forth hereinafter.

[39] FIG. 1 illustrates a width cross section of an apparatus for fabricating a shape retention silk in accordance with an embodiment of the present invention. FIG. 2 illustrates a dual standing belt shown in FIG. 1. FIG. 3 is a top view of a salt shrinkage treatment tank shown in FIG. 1 to illustrate a flow of a salt shrinkage treatment liquid by a circulation pump.

[40] As shown in FIG. 1, the apparatus for fabricating a shape retention silk includes a pre-treatment tank (not shown in drawings), a salt shrinkage treatment tank 100, a cleaning tank 200 and an ultrasonic wave cleaning tank 300.

[41] Firstly, in a pattern forming process before providing a silk fabric to the pre- treatment tank, the silk fabric is bonded with a thermal- shrinkage fabric, and the silk fabric is ripened for 24 hours. Then, the silk fabric is heated at 80-90 ⁰ C to be matched with a pattern to form the pattern on the ripened silk fabric. The silk fabric having the pattern is provided to the pre-treatment tank.

[42] The pre-treatment tank improves a wet state of the silk fabric having the pattern, performs a pre-treatment process, and adjusts a pick-up rate (a weight rate of a wet fabric) of the silk fabric to be 180%. Because, a silk fabric is not wet easily due to a high density of a salt shrinkage treatment liquid, a treatment performance difference of the silk fabric occurs for a short treatment process time. That is, if the silk fabric is previously immersed in a water to improve a wet state of the silk fabric, the salt shrinkage treatment liquid immerses into the silk fabric easily when the silk fabric is immersed in the salt shrinkage treatment liquid. In an embodiment of the present invention, a calcium nitrate is used as the salt shrinkage treatment liquid.

[43] The salt shrinkage treatment tank is made of a stainless material to prevent rust from being generated from an over-salt, and includes an input roller 110, a plurality of immersing rollers 120 and 130, an output roller 140, a dual standing belt 150 and a salt shrinkage treatment liquid circulation driving unit 160. In an embodiment of the present invention, a circulation pump is used as the salt shrinkage treatment liquid circulation driving unit, and hereinafter the salt shrinkage treatment liquid circulation

driving unit is called as the circulation pump.

[44] The input roller 110 and the output roller 140 are, respectively, configured to operate independently. The immersing rollers immerse a silk fabric in a salt shrinkage treatment liquid for a treatment time.

[45] A density of the salt shrinkage treatment liquid filled in the salt shrinkage treatment tank 100 is adjusted as 1.35-1.45, and a salt shrinkage treatment process is performed in the salt shrinkage treatment tank 100 at 75-85 ⁰ C for 30 seconds to 3 minutes. The difference of the salt shrinkage treatment will be described below.

[46] The silk fabric, which is provide to the salt shrinkage treatment tank 100 after the pre-treatment process, is inputted to the inside of the salt shrinkage treatment tank 100 along a space between an upper standing belt 152 and a lower standing belt 154 of the dual standing belt 150 by the input roller 110, and is transferred between the plurality of immersing rollers.

[47] The dual standing belt 150 includes the upper standing belt 152 and the lower standing belt 154, and prevents the silk fabric from floating.

[48] Because, the salt shrinkage treatment liquid having a density of 1.40 is larger than a density of the silk fabric, the silk fabric floats easily and the salt shrinkage treatment process is not performed. The dual standing belt 150 is used for preventing the silk fabric form floating.

[49] Especially, a plurality of penetration holes are formed on the dual standing belt 150, and enable the silk fabric to be smoothly transferred by smoothly circulating the salt shrinkage treatment liquid which flows on an upper part and a lower part of the dual standing belt 150.

[50] Referring to FIG. 3, an inlet of a circulation pipe 162 is formed on a side of the salt shrinkage treatment tank 100, and an outlet of the circulation pipe 162 is formed on the other side of the salt shrinkage treatment tank 100. The salt shrinkage treatment liquid is circulates from a side of the salt shrinkage treatment tank 100 to the other side of the salt shrinkage treatment tank 100 through the circulation pipe 162 by the circulation pump 160. In another embodiment of the present invention, it is preferred that a plurality of inlets and outlets can be dispersedly arranged to maintain a flow of the salt shrinkage treatment liquid uniformly. In another embodiment of the present invention, a circulation pump and a circulation pipe can be installed on an inner part or an external part of the salt shrinkage treatment tank.

[51] The salt shrinkage treatment liquid filled in the salt shrinkage treatment tank is circulated through the circulation pipe 162 by the driving of the circulation pump 160. The salt shrinkage treatment liquid pushes the silk fabric by the flow of the salt shrinkage treatment liquid, and the silk fabric is transferred in a space between the upper standing belt 152 and the lower standing belt 154 of the standing belt without an

external tension. Here, a gap between the upper dual standing belt 152 and the lower dual standing belt 154 is larger than a thickness of the silk fabric, and the silk fabric is transferred along the flow of the salt shrinkage treatment liquid. Moreover, the plurality of immersing rollers 120 and 130 and the dual standing belt 140 do not rotate, and maintains a fixed state.

[52] That is, the silk fabric is not transferred between the upper standing belt 152 and the lower standing belt 154 by the rotation force of the plurality of immersing rollers 120 and 130.

[53] Because a part having a tension is not shrunk if a fabric is pulled toward a warp direction or a weft direction by the immersing rollers 120 and 130, and a tension is applied to the silk fabric. That is, because the part having the tension has a different shrinking rate from a part having a tension-free, a shape of the silk fabric can not be retained. The immersing rollers 120 and 130 and the dual standing belt 150 retain a fixed state and do not rotate. The silk fabric is transferred in the salt shrinkage treatment tank 100 under a tension-free by the circulation of the salt shrinkage treatment liquid by the circulation pump.

[54] Here, an upward/downward tension with the input roller 110 can be generated according to the horizontal movement of the silk fabric. However, because the density of the salt shrinkage treatment liquid is high within the salt shrinkage treatment tank 100, a micro tension of the upward/downward direction, which is applied to the input roller, is not transferred to the silk fabric immersed in the salt shrinkage treatment liquid. That is, the micro tension of the upward/downward direction has not influence on the tension-free of the silk fabric immersed in the salt shrinkage treatment liquid. Accordingly, when the silk fabric is transferred, the tension-free of the silk fabric is maintained.

[55] In the cleaning tank 200, a salt attached to the silk fabric is removed using a salt eliminator. A surface active agent is used as the salt eliminator. The salt elimination process in a cleaning tank is already published and is omitted in a detailed description.

[56] The ultrasonic wave cleaning tank 300 removes additionally an over-salt attached to the silk fabric, which is cleaned in the cleaning tank 200, using an ultrasonic wave. A plurality of ultrasonic wave generators 310 of 50-hone which generate an ultrasonic wave are installed on the ultrasonic wave cleaning tank 300. It is preferred that 2-4 ultrasonic wave generators are attached to be immersed in the salt eliminator of the ultrasonic wave cleaning tank 300.

[57] That is, the surface active agent used as the salt eliminator is added to the ultrasonic wave cleaning tank 300, and if the ultrasonic wave is generate and illuminated, the salt attached to the silk fabric is detached from the silk fabric due to a ultrasonic wave energy higher than a coupling force of the over-salt with the silk fabric.

[58] Because a calcium nitrate used as the salt shrinkage treatment liquid has a strong hydrogen coupling force and a lot of salts are attached to the silk fabric irrespective of a real reaction, the attached over-salt is not completely detached from the silk fabric by the strong hydrogen coupling force although the surface active agent is used. If the over-salt is not removed from the silk fabric completely, a reaction process of the silk fabric is performed much more than present treatment state or the touch of the silk fabric is damaged.

[59] Moreover, in another embodiment of the present invention, a silicon surface active agent as a salt eliminator can be additionally injected to improve the elimination efficiency of the salt.

[60] As mentioned above, in the embodiment of the present invention, the circulation pump is described as an example of the salt shrinkage treatment liquid circulation driving unit. But in another embodiment of the present invention, a compression sprayer (not shown in drawings), which compresses and sprays a salt shrinkage treatment liquid or an air is used as the salt shrinkage circulation driving unit instead of the circulation pump, can be installed in the salt shrinkage treatment tank, and the compression sprayer can circulate the salt shrinkage treatment liquid in the salt shrinkage treatment tank.

[61] As mentioned above, in the embodiment of the present invention, the plurality of immersing rollers 120 and 130 and the dual standing belt do not rotate and are fixed. But, in another embodiment of the present invention, a gap between the upper standing belt 152 and the lower standing belt 154 shown in FIG. 1 is similar to the thickness of the silk fabric, and the silk fabric is compressed and immersed in the salt shrinkage treatment liquid by the upper standing belt 152 and the lower standing belt 154. Thus, the silk fabric can be transferred by rotating the plurality of immersing rollers 120 and 130 and driving the upper standing belt 152 and the lower standing belt 154. That is, the silk fabric can be transferred in the salt shrinkage treatment tank under a tension- free condition where a tension has no influence on the silk fabric immersed in the salt shrinkage treatment liquid. Here, it is preferred that a moving speed of the upper standing belt 152 is maintained equally to a speed of the lower standing belt 154.

[62] Especially, in the silk fabric having various uneven patterns or ripples, it is preferred that the silk fabric is transferred in the salt shrinkage treatment tank under a tension- free condition which uniformly retains a shape of the silk fabric without releasing a shape of the ripple or an uneven pattern by the compression of the upper standing belt 152 and the lower standing belt 154.

[63] Here, in another embodiment of the present invention, a driving speed control unit

(not shown in drawings) can properly adjust a gap distance between the upper standing belt 152 and the lower standing belt 154 by adjusting a belt tension and a roller

position, and can control the movement speed of the dual standing belt by controlling the speed of the plurality of immersing rollers 120 and 130.

[64]

[65] Hereinafter, a method for fabricating a shape retention silk will be described below in accordance with another aspect of the present invention. FIG. 4 shows a flowchart illustrating a method for fabricating a shape retention silk in accordance with a first embodiment of the present invention.

[66] As shown in FIG. 4, a method for fabricating a shape retention silk in accordance with a first embodiment of the present invention includes a fabric bonding process S410, a frame installation process S420, a pattern forming process S430, a salt shrinkage treatment process S440, an ultrasonic wave cleaning process S450, a fabric refining process S460, and a dry and tentor process S470.

[67] In the fabric bonding process S410, a silk fabric and a thermal- shrinkage fabric are bonded with each other by using adhesives composed of a main material of 40%, a hardener of 20%, an accelerator of 15% and a diluent of 15%, and then the bonded silk fabric is ripened at 6O ⁰ C for 24 hours.

[68] In the frame installation process S420, since a silk fabric is shrunk about 20% in a salt shrinkage process, a frame is installed to form a pattern larger than a wanted pattern as much as 20%.

[69] In the pattern forming process S430, a wanted pattern is formed by heating the installed frame at 80-90 ⁰ C and shrinking the thermal shrinkage fabric, and a with of the silk fabric is set using a tentor. The formed pattern is made flat through a calendar process.

[70] In the salt shrinkage treatment process S440 which shrinks the silk fabric with an over-salt, a density of the salt shrinkage treatment liquid filled in the salt shrinkage treatment tank is adjusted as 1.35 to 1.45. The salt shrinkage treatment process is performed at 75-85 ⁰ C for 30seconds 3minutes.

[71] That is, the silk fabric is transferred in the salt shrinkage treatment tank and the salt shrinkage treatment is performed without an influence of an external tension by circulating the salt shrinkage treatment liquid filled in the salt shrinkage treatment using the circulation pump or moving the dual standing belt while compressing the silk fabric between the upper standing belt and the lower standing belt.

[72] Here, the silk fabric has the shape retention for the water cleaning by retaining the shape of a pattern part and a bottom part. Since the pattern part and the bottom part have a different salt shrinkage rate, a complicated pattern process having a regularized repeat pattern can be implemented.

[73] In the ultrasonic wave cleaning process S450, because the over-salt which is not reacted in the salt shrinkage treatment process makes the silk fabric rough, the salt

attached to the silk fabric is efficiently removed from the silk fabric by generating an ultrasonic wave from an ultrasonic generator and illuminating the ultrasonic wave to the salt attached to the silk fabric.

[74] In the fabric refining process S460, the refining of the silk fabric is performed in refining water at 95 ⁰ C for three hours. The refining water includes an alkali agent of a sodium silicate, a sodium bicarbonate and a sodium carbonate of 5-7%, a soap and refining agent of 15% as a surface active agent, and a hydration sodium sulphuric acid of 1% as a bleaching agent. The silk fabric returns a polish and soft characteristic.

[75] The dry and tentor process S470 is omitted because the dry and tentor process is a common knowledge and can be understood for a skilled person in a related art.

[76] If the tentor process which adjusts the dry and width of the fabric is completed, the thermal-shrinkage fabric attached to the silk fabric is removed.

[77]

[78] FIG. 5 shows an image of a salt-shrinkage fabric having a thermal-shrinkage fabric generated using a method for fabricating a shape retention silk in accordance with a first embodiment of the present invention.

[79] As shown in FIG. 5, a generation condition and a result of the silk fabric after the salt shrinkage process are described as below.

[80] O sample: chiffon 24g/yd, diameter width: 44 inch

[81] O diameter width after uneven treatment: 36 inch

[82] O salt shrinkage method: after a pre-treatment process for the sample bonded with a thermal-shrinkage fabric was performed in a pre-treatment tank with a pick-up rate of 140%, a density of a salt shrinkage treatment liquid was adjusted as 1.40 and a salt shrinkage treatment process was performed at 8O ⁰ C for 30 seconds. Then, a silicon surface active agent of 5% was injected into an ultrasonic wave cleaning tank, and the sample was cleaned, dried and refined. After a refining process, the thermal- shrinkage fabric was removed and a constellation of the sample was examined.

[83] After a salt shrinkage process, a pattern part was shrunk as much as 20%, and a width of the sample was maintained as 36 inch after an uneven process. The softness of the sample was improved for the softness of an original silk fabric as much as 25%. The elasticity of the sample was improved by the shrinkage of the pattern part through a salt shrinkage process. The sample had the shape retention for water cleaning within 3%.

[84] As shown in FIG. 5, the present invention can implement complicated patterns having various sizes and shapes using a frame, and can previously set a wanted width of a silk fabric because the other parts except the pattern part are not shrunk.

[85]

[86] FIG. 6 shows an image of a salt-shrinkage fabric after a melamine resin printing

process generated using a method for fabricating a shape retention silk in accordance with a first embodiment of the present invention.

[87] As shown in FIG. 6, a generation condition and a result of the silk fabric after the salt shrinkage process are described as below.

[88] O sample: crease-chiffon 24g/yd, diameter width: 44 inch

[89] O printing: printing a pattern part with a melamine resin of 8w%

[90] O salt shrinkage method: after a pre-treatment process was performed with a pick-up rate of 140%, a density of a salt shrinkage treatment liquid was adjusted as 1.40 and a salt shrinkage treatment process was performed at 80-82 ⁰ C for 90 seconds. Then, a silicon surface active agent of 5% was injected into an ultrasonic wave cleaning tank, and the sample was cleaned, dried and refined. After a refining process, the thermal- shrinkage fabric was removed and a constellation of the sample was examined.

[91] After a salt shrinkage process, the other part of the sample except a pattern part was shrunk as much as 30%, and a width of the sample was shrunk from 44 inch to 32 inch. Because the printing part was not shrunk, the pattern part was formed to be embossed three-dimensionally. The sample was rough little and improved the elasticity of 30%.

[92]

[93] FIG. 7 shows another image of a salt-shrinkage fabric having a thermal- shrinkage fabric generated using a method for fabricating a shape retention silk in accordance with a first embodiment of the present invention.

[94] As shown in FIG. 7, a generation condition and a result of the silk fabric after the salt shrinkage process are described as below.

[95] O sample: georggette 50g/yd, 44 inch

[96] O diameter width after uneven process: 36 inch

[97] O salt shrinkage method: after a pre-treatment process for the sample bonded with a thermal-shrinkage fabric was performed in a pre-treatment tank with a pick-up rate of 180%, a density of a salt shrinkage treatment liquid was adjusted as 1.40 and a salt shrinkage treatment process was performed at 80-82 ⁰ C for 30 seconds. Then, a silicon surface active agent of 5% was injected into an ultrasonic wave cleaning tank, and the sample was cleaned, dried and refined. After a refining process, the thermal- shrinkage fabric was removed and a constellation of the sample was examined.

[98] After a salt shrinkage process, a pattern part was shrunk as much as 20%, and a width of the sample was maintained as 36 inch after an uneven process. The elasticity of the sample was improved as much as 20% for the elasticity of an original silk fabric. The sample had the shape retention for water cleaning within 3%.

[99]

[100] Hereinafter, a method for fabricating a shape retention silk in accordance with another embodiment of the present invention will be described. FIG. 8 shows a

flowchart illustrating a method for fabricating a shape retention silk in accordance with a second embodiment of the present invention.

[101] As shown in FIG. 8, a method for fabricating shape retention silk in accordance with a second embodiment of the present invention includes a bonding process S810, a press process S820, a salt shrinkage treatment process S840, an ultrasonic wave cleaning process S850, a fabric refining process S860 and a dry and tentor process S870.

[102] Since the press process S820 is already published, the description of the press process is omitted.

[103] Because the bonding process S810, the salt shrinkage treatment process S840, the ultrasonic wave cleaning process S850, the fabric refining process S860 and the dry and tentor process S870 are same with the bonding process S410, the salt shrinkage treatment process S440, the ultrasonic wave cleaning process S450, the fabric refining process S460 and the dry and tentor process S470 which are described in the first embodiment of the present invention, the description of the bonding process S810, the salt shrinkage treatment process S840, the ultrasonic wave cleaning process S850, the fabric refining process S860 and the dry and tentor process S870 are omitted.

[104] FIG. 9 shows an image of a salt-shrinkage fabric after a wrinkle forming process of a fabric using a press according to a method for fabricating a shape retention silk in accordance with a second embodiment of the present invention.

[105] As shown in FIG. 9, a generation condition and a result of the silk fabric after the salt shrinkage process are described as below.

[106] O sample: shantung 72g/yd, 44 inch

[107] O diameter width after press process: 30 inch

[108] O salt shrinkage method: after a pre-treatment process for the sample was performed in a pre-treatment tank with a pick-up rate of 150%, a density of a salt shrinkage treatment liquid was adjusted as 1.45 and a salt shrinkage treatment process was performed at 80-82 ⁰ C for 60 seconds. Then, a silicon surface active agent of 5% was injected into an ultrasonic wave cleaning tank, and the sample was cleaned, dried and refined. After a refining process, the thermal- shrinkage fabric was removed and a constellation of the sample was examined.

[109] After a salt shrinkage process, a pattern part was shrunk as much as 15%, but a diameter width of the sample was increased from a folding part as much as 10%, that the diameter width of the sample was shrunk from an original fabric as much as 10%. The shape of the folding part was retained by the salt shrinkage treatment process. The sample had the shape retention for water cleaning within 3%.

[HO]

[111] Hereinafter, a method for fabricating a shape retention silk in accordance with

another embodiment of the present invention will be described. FIG. 10 shows a flowchart illustrating a method for fabricating a shape retention silk in accordance with a third embodiment of the present invention.

[112] As shown in FIG. 10, a method for fabricating shape retention silk in accordance with a third embodiment of the present invention includes a variegation process SlOlO, a salt shrinkage treatment process S 1040, an ultrasonic wave cleaning process S 1050, a fabric refining process S 1060 and a dry and tentor process S 1070.

[113] Since the variegation process S1020 is already published, the description of the variegation process is omitted.

[114] Because the salt shrinkage treatment process S 1040, the ultrasonic wave cleaning process S 1050, the fabric refining process S 1060 and the dry and tentor process S 1070 are same with the salt shrinkage treatment process S440, the ultrasonic wave cleaning process S450, the fabric refining process S460 and the dry and tentor process S470 which are described in the first embodiment of the present invention, the description of the salt shrinkage treatment process S 1040, the ultrasonic wave cleaning process S 1050, the fabric refining process S 1060 and the dry and tentor process S 1070 are omitted.

[115] FIG. 11 shows an image of a salt-shrinkage fabric after a variegation process of a fabric using a method for fabricating a shape retention silk in accordance with a third embodiment of the present invention.

[116] As shown in FIG. 11, a generation condition and a result of the silk fabric after the salt shrinkage process are described as below.

[117] O sample: habutae 24g/yd, 44 inch

[118] O diameter width after variegation process: 10 inch

[119] O salt shrinkage method: after a pre-treatment process for the sample was performed in a pre-treatment tank with a pick-up rate of 150%, a density of a salt shrinkage treatment liquid was adjusted as 1.45 and a salt shrinkage treatment process was performed at 80-82 ⁰ C for 60 seconds. Then, a silicon surface active agent of 5% was injected into an ultrasonic wave cleaning tank, and the sample was cleaned, dried and refined. After a refining process, the thermal- shrinkage fabric was removed and a constellation of the sample was examined.

[120] After a salt shrinkage process, a thread-untied part was shrunk and a diameter width of the sample was 38 inch. A three-dimensional pattern was clearly formed by the salt shrinkage treatment process. The sample had the shape retention for water cleaning within 5%.

[121] As mentioned above, the shape retention of the silk fabric is described in accordance with embodiments of the present invention, but the present invention can be applied to a natural fabric, e.g., a wool fabric, having a protein component for which a salt

shrinkage process can be performed by a salt shrinkage treatment liquid.

[122] While the present invention has been described with respect to certain preferred embodiments, it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.

[123]