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Title:
COMBINED FABRIC OF NET FABRIC AND NON-WOVEN FABRIC FOR NET LACE
Document Type and Number:
WIPO Patent Application WO/2002/086227
Kind Code:
A1
Abstract:
The fabric according to the present invention is prepared by feeding a non-woven fabric having about 10$m(k)30 g/m?2¿ of weight and about 60$m(k)80 inch of width with the speed of 10$m(k)50 m/min, which is prepared with polyvinyl alcohol (PVA), coating a binding agent on one surface of the non-woven fabric with a rotating roll, feeding a net fabric having about 30$m(k)100 g/60 inch x 1 YD of weight and about 60$m(k)80 inch of width with the same speed of that of the non-woven fabric against the coated surface of the non-woven fabric with applying tension to the net fabric to maintain the basic form of the net fabric, binding the non-woven fabric and the net fabric by using a pair of press rolls, drying the bound fabric by using a drying apparatus comprised of several rolls, and winding the dried fabric without tension.

Inventors:
SHIN JAE-KYUN (KR)
Application Number:
PCT/KR2002/000757
Publication Date:
October 31, 2002
Filing Date:
April 24, 2002
Export Citation:
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Assignee:
TEX TECH CO LTD (KR)
SHIN JAE-KYUN (KR)
International Classes:
D06M17/04; B32B5/26; B32B7/12; D04H13/00; D05C17/00; D06M17/06; (IPC1-7): D06M17/04
Foreign References:
KR19990038431U1999-10-25
JP2000314067A2000-11-14
JPH05272058A1993-10-19
Attorney, Agent or Firm:
Choi, Duk Kyu (5th Floor Chunwoo Bldg. 736 Yoksam-dong Gangnam-gu Seoul 135-080, KR)
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Claims:
What is claimed is:
1. A method of preparing a fabric for lace, comprising the steps of : (a) feeding a nonwoven fabric having a weight of about 1030 g/m and a width of about 6080 inches at the speed of 1050 m/min, which is prepared with polyvinyl alcohol (PVA); (b) coating a binding agent on one surface of the nonwoven fabric with a rotatingroll; (c) feeding a net fabric having a weight of about 30100 g/60 inch x 1 YD and a width of about 6080 inches at the same speed as that of the nonwoven fabric against the coated surface of the nonwoven fabric with applying tension to the net fabric to maintain the unit structure of the net fabric; (d) bonding the nonwoven fabric and the net fabric by using a pair of press rolls; (e) drying the bonded fabric by using a drying apparatus comprised of several rolls; and (f) winding the dried fabric without tension.
2. The method as defined in claim 1, wherein said binding agent is a mixture of about 80 wt% of PVA and about 20 wt% of water.
3. The method as defined in claim 1, wherein said binding agent is applied not to leak out to the other surface of the nonwoven fabric when one surface of the nonwoven fabric is coated with the binding agent.
4. The method as defined in claim 1, wherein said nonwoven fabric has a weight of less than 20/fui2.
5. The method as defined in claim 1, wherein the temperature of the first roll of said drying apparatus is about 50 °C and that of the last roll is about 90 (:.
6. The method as defined in claim 1, wherein about three to five of rolls are installed between said first roll and said last roll, and the temperatures of the rolls are increased gradually between 50 °C and 90 °C.
7. The method as defined in claim 1, wherein said rolls of the drying apparatus are steam rolls, which are heated with steam.
8. A fabric for lace which is prepared by feeding a nonwoven fabric having a weight of about 1030 g/m2 and a width of about 6080 inches at the speed of 1050 m/min, which is prepared with polyvinyl alcohol (PVA); coating a binding agent on one surface of the nonwoven fabric with a rotating roll; feeding a net fabric having a weight of about 30100 g/60 inch x 1 YD and a width of about 6080 inches at the same speed as that of the nonwoven fabric against the coated surface of the nonwoven fabric with applying tension to the net fabric to maintain the unit structure of the net fabric; binding the nonwoven fabric and the net fabric using a pair of press rolls; drying the bonded fabric using a drying apparatus comprised of several rolls; and winding the dried fabric without tension.
9. The fabric of lace as defined in claim 8, wherein the tensile strength in cross direction of said fabric is about 7 kgf/mm and that in machine direction is about 5 kgf/mi.
Description:
COMBINED FABRIC OF NET FABRIC AND NON-WOVEN FABRIC FOR NET LACE Field of the Invention The present invention relates to a fabric for lace. More particularly, the present invention relates to a fabric for lace, which is bonded with a net fabric and a non-woven fabric together.

Background of the Inventions A fabric for lace comprising a net fabric and a non-woven fabric is used for embroidery in women undergarment such as lingerie. Namely, the fabric for lace is embroidered, and then the non-woven fabric is removed by dissolving in a hot bath. A lace cannot be decorated on the net fabric, because the net fabric does not have formability in itself. The net fabric is bonded to the non-woven fabric to provide the fabric for lace with formability when the lace is decorated on the fabric for lace. After embroidered on the fabric for lace, the embroidered fabric is treated in a hot bath over 90 °C to remove the non-woven fabric. The process of dissolving the non-woven fabric can be easily carried out by an ordinary skilled person in the art.

In a conventional method of preparing a fabric for lace, the net fabric and the non-woven fabric are adhered adhesive tape along the side edges, and the side edges are sewn to provide the fabric with formability. However, the conventional preparation method has many problems as follow.

First, as the side edges are bonded together and the inner parts of the side edges are not bonded, the fabric cannot have uniform formability over the--entire fabric. Accordingly, it is difficult to produce articles. with uniform decoration so as

to increase inferior goods.

Second, because both side edges of a net fabric and a non-woven fabric are bonded with an adhesive tape and then sewed with a sewing machine, the working hour and manufacturing cost are increased.

Third, as the net fabric and the non-woven fabric are bonded manually, the net fabric can be damaged during work. In fact, the net fabric is damaged during work quite often.

The present inventor has developed a new method of preparing a fabric for lace, which can give sufficient rigidity to embroider thereon, by bonding a net fabric and a non-woven fabric completely in an automatic system in order to solve the above problems.

Objects of Inventions A feature of the present invention is the provision of a fabric for lace having sufficient formability by bonding a net fabric and a non-woven fabric with a binding agent.

Another feature of the present invention is the provision of a method of preparing a fabric for lace, which shortens the working hour, decreases the rate of inferiority and manufacturing cost, through automation of the process of bonding a net fabric and a non-woven fabric.

A further feature of the present invention is the provision of a fabric for lace to produce a lace with a uniform decoration.

A further feature of the'present invention is the provision of a fabric for lace, which has the sarde tensile strength in. cross direction as that in machine direction, for example, having tensile strength of about 7 kgf/mmf in cross direction and that of aboyut 5 kgf/mm2 in machine direction. a further feature of the present invention is the provision of a fabric for lace having a thin thickness and a soft touch by using a non-woven fabric having a-

weight of less than 20 g/m2.

Other objects and advantages of this invention will be apparent from the ensuing disclosure and appended claims.

Summary of the Invention The fabric for lace according to the present invention is prepared by feeding a non-woven fabric having a weight of about 10-3 0 g/m2 and a width of about 60-80 inches at the speed of 10-50 m/min, which is prepared with polyvinyl alcohol (PVA), coating a binding agent on one surface of the non-woven fabric with a rotating roll, feeding a net fabric having a weight of about 30-100 g/60 inch x 1 YD and a width of about 60-80 inches at the same speed of that of the non-woven fabric against the coated surface of the non-woven fabric with applying tension to the net fabric to maintain the basic form of the net fabric, bonding the non-woven fabric and the net fabric by using a pair of press rolls, drying the bonded fabric by using a drying apparatus comprised of several rolls, and winding the dried fabric without tension.

The binding agent being coated on one surface of the non-woven fabric is preferably a mixture of about 80 wt% of PVA and about 20 wt% of water and should be applied not to leak out to the other surface of the non-woven fabric. The drying apparatus to heat the bonded fabric is comprised of several rolls, wherein a temperature of the first roll is preferably about 50 °C and that of the last roll is preferably about 90 °C. About [from] three to five of rolls are placed between the first roll and the last roll, wherein temperatures of the rolls are preferably increased gradually. Preferably, ; steam rolls are used to prevent deformation of the fabric by heat during the drying process.

Brief Description of the Drawings Fig. 1 shows a perspective drawing of the combined fabric of a net fabric and a non-woven fabric for lace according to the present invention and an enlarged partial view of the net fabric; and Fig. 2 shows a drawing of an example of the embroidered fabric according to the present invention, in which the non-woven fabric is removed.

Detailed Description of the Invention Fig. 1 shows a perspective drawing of a fabric 10 for lace bonding a net fabric 2 and a non-woven fabric 1 with a binding agent according to the present invention and an enlarged partial view of the net fabric.

In the present invention, the non-woven fabric and net fabric are fed from the rolls at a fixed speed.

The non-woven fabric is prepared with polyvinyl alcohol, and is dissolved by dipping in water at about 90 °C or more for about 5-20 minutes.

Conventionally, the non-woven fabric having a weight of about 20-30 g/m has been used for the fabric for lace. However, in the present invention, the non-woven fabric having a weight of less than 20 g/m2 can be used because the entire surface of the net fabric and the non-woven fabric are bonded by a binding agent. The non-woven fabric of the present invention is wound as a roll shape, and has a width of about 60-80 inch. Properly, the width of the non-woven fabric should be same with that of the net fabric. The non-woven fabric is fed at the speed of 10-50 m/min, which should be the same as the feeding speed of the net fabric.

- ; One surface of the non-woven-fabric is coated with a binding agent during the feeding process. The coating process with a binding agent can be easily carried out by an ordinary-person in the art. The binding agent used in the present invention is a mixture of about 80 wt% of PVA and about 20 wt% of water The

binding agent can be easily removed when the non-woven fabric is removed, because it is prepared with the same material with the non-woven fabric, and so can be dissolved in hot water. The non-woven fabric is sensitive to water, and so the binding agent should be spread in an appropriate amount not to deform the non-woven fabric. Namely, the binding agent should be coated not to leak out to the other surface of the non-woven fabric when it is spread on one surface of the non-woven fabric using a rotating roll.

The net fabric is fed at the same speed as that of the non-woven fabric against the coated surface of the non-woven fabric. The net fabric is prepared with a synthetic fiber, and nylon or polyester is preferred. The net fabric having a weight of about 30 ~ 100 g/60 inch x 1 YD and a width of about 60-80 inches is fed at the speed of 10-50 m/min, which is the same speed as that of the non-woven fabric.

The unit structure 21 of the net fabric is generally square, hexagon or circle, and the formability of the unit structure is very important. Namely, when the net fabric is bonded to the non-woven fabric maintaining its unit structure, the high quality of uniform net lace can be obtained. Accordingly, feeding of the net fabric with the same speed as that of the non-woven fabric with applying tension to the net fabric to maintain the unit structure is very important in the present invention. When tension is applied to the net fabric ununiformly, and so the unit structure of the net fabric is deformed, the high quality of uniform net lace cannot be obtained.

The net fabric is bonded to the non-woven fabric coated with the binding agent by using a pair of--press rolls. The bonding process using a pair of press rolls can be easily carried out by an ordinary skilled person in the art.

The bonded fabric of. the net fabric and the nori-woven fabric for lace is dried by using a drying apparatus comprised of several rolls. The temperature of the first roll is preferably about 50 °C and that of the last roll is preferably about 90 °C.

About three to five of rolls are installed between the first roll and the last roll, wherein temperatures of the rolls are preferably increased gradually. For examples, when six rolls are used, the temperatures of the first, second, third, forth, fifth, and sixth rolls are set to 50 °C, v58 °C, 66 °C, 74 °C, 82 °C and 90 °C, respectively.

The fabric for lace is dried by the rotating rolls that are heated with steam.

Preferably, steam rolls are used to prevent deformation of the fabric by heat because the fabric is directly contacted with the rolls.

The dried fabric for lace is wound without tension. By'winding without tension'it is meant that the fabric for lace is wound with applying almost no tension.

The winding process can be carried out using an automatic take-up machine, and the take-up machine is well known to an ordinary skilled person in the art. By winding the fabric for lace without tension, deformation of the unit structure of the net fabric during the winding process can be prevented.

In the fabric for lace according to the present invention, the tensile strengths in cross direction and machine direction are almost equal because the unit structure of the net fabric is maintained. Preferably, the tensile strength in cross direction of the fabric for lace according to the present invention is about 7 kgf/mnf and that in machine direction is about 5 kgf/mi.

By using the fabric for lace according to the present invention, a good quality of net lace can be produced because the unit structure of the net fabric can be maintained by bonding the net fabric and the non-woven fabric completely with a binding agent.

Embroidery 3 is embroidered on the fabric for lace according to the present invention. After being embroidered, the non-woven fabric should be removed. To remove the non-woven fabric, the embroidered fabric is dipped in hot water bath of about 90 °C or more for about 5-20 minutes. The process of dissolving the non-woven fabric can be easily carried out by an ordinary skilled person in the art. Fig : : 2 is a drawing of an example of the embroidered fabric for net lace, and it shows thatzernbroidéry-3 is produced on the net fabric 2 after the non-woven fabric having been dissolved.

The fabric for lace according to the present invention has good formability and a tensile strength in cross direction of about 7 kgf/mnf and that in machine direction of about 5 kgf/mm2, because the unit structure of the net fabric is maintained by bonding the net fabric and non-woven fabric with a binding agent. And it has a

thin thickness and soft touch by using the non-woven fabric having a weight of less than 20 g/m2. Further, the working hour, rate of inferiority and manufacturing cost can be decreased through automation of the process of bonding a net fabric and a non-woven fabric.

The present invention can be easily carried out by an ordinary skilled person in the art. Many modifications and changes may be deemed to be within the scope of the present invention as defined in the following claims.