TWI728651B - Elastic yarn, cutting method and cutting structure thereof, and textile with such elastic yarn - Google Patents

Abstract

The present invention provides a method and structure for cutting elastic filaments. The cutting structure has a conveying device and a cutting device; the cutting method is to cut an elastic film, which is detachably combined with at least one cushion layer to convey the The elastic film material is sent to the cutting device, and the elastic film material is cut several times, so that the elastic film material can be cut into elastic yarns, and fine elastic yarns can be cut even more. The elastic yarn can be woven into textiles, or used as sewing thread or embroidery thread for clothing.

Description

Elastic yarn, cutting method and cutting structure thereof, and textile with such elastic yarn

The invention relates to an elastic yarn and elastic yarn textiles, and a cutting method and a cutting structure for cutting an elastic film material into fine elastic yarns.

The yarn made of the film material in the current technology has certain rigidity, lack of elasticity and softness, and cover. The existing film material can be cut into yarn because the rigidity of the PET film material can be used for cutting, such as Glitter yarn, glitter yarn with metallic effect cannot be made by drawing. PET polyester film is quite hard, and it is the same material as the mineral water beverage bottle. The fabric made of this kind of yarn is not soft and comfortable, it will have a thorny touch, and it is not suitable for wearing. For the existing reflective yarn, if it is a double-sided reflective film, a layer of PET film is laminated in the middle of the two-layer reflective film, and then cut into yarn; if it is a single-sided reflective yarn, it is pasted on the back of a reflective film. Combine a layer of PET film and cut into yarn. The current process technology of dividing the film into filaments cannot cut soft materials. In addition, materials with low toughness and elasticity (such as hard PVC or OPP materials) can also be cut into filaments (yarns) by cutting, but It has not been used on textile fabrics because of environmental protection factors and heat resistance issues.

If you want to make knitable and elastic yarn or silk by cutting, you must cut a relatively long and relatively thin elastic film material, and cut into relatively thin silk/yarn. Let it be used more widely. However, the inventor, after testing, market research and inquiring about the manufacturers who cut the film material, found that the current process cannot cut the film-like, soft, and elastic film material into filaments. There are several main reasons. First, because the elastic film material is elastic and soft, it is easy to deform and twist, and it is easy to happen that the tool cannot cut the elastic film material, causing the cut wire to be large and small, and there is a jagged phenomenon. When the elastic film The greater the elasticity of the material, it will happen that the tool does not cut the elastic film material. Especially, if multiple knives are used to cut multiple filaments on a piece of elastic film material at the same time, if one tool does not cut the elastic film material. The elastic membrane material will become defective, and the elastic membrane material must be scrapped. And the process of soft elastic membrane are wrinkled easily cut, such cutting, stacked material at lower portion thereof, the influence of the cutting implement and defective products are formed.

Second, when pulling the elastic film material, due to its elasticity, when the film material is towed, the stretching and tension of each part of the film material will be uneven. Where the tension is too high, the thread after cutting will be unbalanced. When the tension is too small, the cut silk will form a wave shape, and because the tension is uneven, the cut silk will be different in thickness, resulting in poor quality. Third, due to the uneven stretching and the small width of the wire to be cut, the wire will be cut, which will also become a defective product and reduce the yield.

Due to the uplifting, it is not yet possible to make elastic yarns by pulling and cutting elastic film materials, especially elastic yarns with small diameters.

One purpose of the present invention is to provide a cutting method and a cutting structure to cut the elastic film material into fine elastic filaments.

Another object of the present invention is to provide a fine elastic yarn, which can be used as textiles, or used as embroidery thread or sewing thread.

The method for cutting elastic filaments provided by the present invention is to cut a plurality of elastic filaments from an elastic membrane material. The cutting method includes: preparing an elastic membrane material, which is detachably combined with at least one cushion layer to form For a material to be cut, the ductility of the cushion layer is lower than that of the elastic film; convey the material to be cut to a cutting device to perform at least two cuts on the elastic film. The first cut of the cutting device is the The elastic film material cuts a plurality of first cuts at equal intervals, and the second cutting is to cut a plurality of second cuts at equal intervals on the elastic film material. The first cuts and the second cuts are The cut marks have the same spacing, and each second cut mark is located between two adjacent first cut marks.

The elastic yarn cutting structure provided by the present invention cuts an elastic film material into a plurality of elastic yarns, and includes: a conveying device and a cutting device; the conveying device conveys the elastic film to the cutting device so that The cutting device cuts the elastic film; the cutting device has at least two rows of multiple cutting knives, which are arranged back and forth in the conveying direction of the elastic film, and the cutting knives in each row have the same knife distance, and are positioned on the elastic film. In the conveying direction of the material, the at least two rows of cutters have at least one position difference; the at least two rows of cutters cut the elastic film material into a plurality of elastic threads.

With the above-mentioned cutting method and cutting equipment, the elastic film material is cut at least twice for multiple times. Not only can the elastic wire be cut reliably, but also the width of 0.05mm~0.5mm can be cut, preferably It is a fine elastic yarn of 0.05mm~0.25mm.

The elastic thread of the present invention has a width and a thickness. The two sides of the elastic thread are cut surfaces, the width is formed between the two sides, and the width of the elastic thread is not greater than its thickness.

The elastic yarn made by the present invention can be woven into textiles and made into clothing for wearing, or used as embroidery thread or sewing thread. Due to the elasticity of the elastic yarn, the fabric made is soft, comfortable and elastic.

10: Elastic membrane material

15: Cushion

20: Conveying equipment

22: Roller

30: Cutting equipment

32, 34, 36: Cutter

40: silk body

42: The first cut

44: second cut

46: Third Cut

50 (50A to 50E): elastic yarn

51: body

52: reflective layer

54: Luminous layer

56: side

60: Textiles

S: Material to be cut

B: Width of elastic yarn

T: The thickness of the elastic film material and the thickness of the elastic yarn

F: first column

G: second column

H: third column

R: Roll

X: Tool distance

D: Position difference

Z: Conveying direction

The purpose, features and effects achieved by the present invention can be understood from the description and drawings of the following preferred embodiments, in which:

FIG. 1 is a schematic diagram of the manufacturing process of a cutting structure and a cutting method according to a preferred embodiment of the present invention, showing the cutting of an elastic film material.

Fig. 2 is a schematic top view of Fig. 1.

Fig. 3 is a schematic top view of the first row of cutters and the second row of cutters of Fig. 1, showing the relative relationship between the two rows of cutters in a larger scale.

Fig. 4 is a schematic diagram of the section line 4-4 of Fig. 1, showing a schematic diagram of the first row of cutters cutting the elastic film material, showing the first cut of the elastic film.

Fig. 5 is a schematic cross-sectional view at the line 5-5 of Fig. 1, showing the state of the elastic film after being cut for the first time.

Fig. 6 is a schematic diagram of the section line 6-6 of Fig. 1, showing the second row of cutters cutting the elastic film for the second time.

Fig. 7 is a schematic cross-sectional view taken along line 7-7 of Fig. 1, showing the state of the elastic film after the first cut.

Fig. 8 is a perspective partial schematic view of Fig. 1, showing that the cut elastic yarn is rolled into a roll. .

9 is a schematic diagram of the cutting structure and cutting method of the second preferred embodiment of the present invention.

Fig. 10 is a schematic top view of the first row of cutters to the third row of cutters in Fig. 9, showing the relative relationship of the three rows of cutters in a larger scale.

Fig. 11 is a schematic cross-sectional view taken along line 11-11 of Fig. 9;

Figure 12 is a three-dimensional schematic diagram of the elastic yarn made by the present invention.

Figures 13 to 17 show cross-sectional views of five different elastic yarns.

Figure 18 shows a textile made with the fine elastic yarn of the present invention.

The present invention provides a cutting method and cutting structure for cutting a stretchable elastic film material into a plurality of elastic filaments 50 with a considerable length as shown in FIG. 12, and the method and equipment of the present invention are suitable for cutting out Fine elastic yarns (elastic yarns), for example, cut out elastic yarns with a width of 0.05mm to 0.5mm. The fine elastic yarns 50 can be made into textiles by knitting technology (for example, directly made into clothing by knitting). Clothing or shoe uppers) or as embroidery thread or sewing thread, so as to solve the problem that the prior art cannot cut the elastic fine silk thread that can be made into textiles.

The drawings of the present invention are for illustration, not the actual number. For example, only a number of cutting knives of the cutting device are shown, not the actual number of cutting knives.

The inventor has tested the cutting of fine elastic threads from an elastic film material. For example, the elastic film material 10 with a width W of 3.2 centimeters (cm) and a thickness of 0.16 mm is cut into 200 elastic threads, and each elastic thread has a width of 0.16. Millimeters (mm), and 200 cutting knives are arranged at an interval of 0.16mm to cut 200 elastic yarns at the same time. The inventor’s test found that the traditional cutting method is difficult to cut fine elastic yarns with a width of 0.16mm and a thickness of 0.16mm. When you want to cut the elastic yarns with a thickness of 0.16mm, the cutting knife has a thickness and cuts two adjacent ones. The gap between the knives is less than 0.16mm. When the cut elastic film enters each gap, it will deform and squeeze into the gap, and then be clamped between two adjacent cutters, between the elastic wire and the cutter Large pressure and resistance will be formed, unable to move, difficult to cut, and even the knife will break due to the extrusion of the material, making it impossible to cut at all.

The cutting method of the present invention can cut elastic filaments from elastic film materials, and can also cut fine elastic filaments with a width as small as 0.05 mm, for example, cut elastic filaments with a width of 0.05 mm to 0.25 mm. Preferably, the cut width is 0.1 to 0.14mm fine elastic yarn. This kind of fine elastic yarn can be made into textiles (such as cloth) for making clothes, providing soft and comfortable wearing; or making shoes, bags (bags, backpacks), bags (bags, backpacks), belts (Belt, webbing), etc., can also be used as embroidery thread or suture.

Figures 1 and 2 show a schematic diagram of a cutting method and a cutting structure according to a preferred embodiment of the present invention. A plurality of elastic filaments are cut from an elastic membrane material 10 made of a polymer material with stretchable elasticity. The elastic membrane material 10 The preferred embodiments of the present invention are PU (Polyurethane), PVC (Polyvinyl Chloride), TPU (Thermoplastic polyurethanes), TPE (Thermoplastic Elastomer), TPR (Thermoplastic Rubber, Thermoplastic Rubber) or silicone and other polymer materials made of plastic or rubber film, with stretchable elasticity and soft. The thickness T of the elastic film 10 is in the range of 0.09 to 0.5 mm, preferably including the range of 0.1 to 0.28 mm.

In this preferred embodiment, 200 fine elastic threads with a width of 0.11 mm are cut from an elastic film 10 with a width W of 2.2 cm and a thickness T of 0.2 mm as an example. Before cutting, the elastic film material 10 is in the form of a roll R, with a considerable length, which is continuously conveyed by a conveying device 20, and a cutting device cuts the film material 10 into the plurality of micro-elastic filaments.

In order to facilitate the cutting of the soft, stretchable elastic film material (hereinafter referred to as the film material) 10, the present invention provides at least one cushion layer 15 that is harder than the film material and is easier to cut to support the elastic film material. The elastic film material 10 It is combined with a cushion layer 15 in a separable manner. The cushion layer 15 is in the shape of a sheet or film, and is made of 10 material with low elasticity, low ductility, and greater rigidity and lower flexibility than the elastic film material. The cushion layer 15 can be made of polymer material or paper, but not This is limited, for example, release paper or release film, for release film, you can choose PET (polyethylene terephthalate) film, OPP (Oriented Polypropylene) or rigid PVC, etc. The cushion layer 15 is combined with the elastic film material 10 to form a material S to be cut.

The detachable bonding method of the film material 10 and the cushion layer 15 includes: electrostatic bonding or bonding with an adhesive. When the adhesive is combined, for example, an adhesive is applied to one of the surface of the film material 10 or the cushion layer 15. Then fit the two together. The bonding between the membrane 10 and the cushion layer 15 only needs to be the minimum bonding, that is, the bonding is the minimum bonding that allows the two 10, 15 to be pulled together and cut together, and is easy to separate. Sex is fine. The adhesive will not be sticky after drying, or although the adhesive is sticky, its stickiness will not be transferred to the elastic film material, that is, the film material 10 and the cushion layer 15 are bonded together. When separated, the surface of the elastic film material 10 will not be sticky. In the present invention, the bonding force between the film material 10 and the cushion layer 15 needs only to meet the following conditions: when the material S to be cut is cut, the film material 10 and the cushion layer 15 can maintain the bonding, which is not limited How or what kind of material is combined between the membrane material 10 and the cushion layer 15.

Please refer to FIG. 1. The present invention cuts a plurality of fine elastic filaments from an elastic film material 10 having a considerable length. The material S to be cut is pulled and hauled by a number of rollers 22 of the conveying device 20 to drive the elastic film material to the The cutting device 30 conveys, and in the process of conveying the material to be cut S and the elastic film material 10, the elastic film material is cut by the cutter of the cutting device 30, and then a plurality of elastic filaments are cut in a manufacturing process.

The cutting device 30 is provided with two rows of F and G multiple cutting knives 32 and 34 in the preferred embodiment, which are arranged back and forth in the conveying direction Z of the elastic film material to perform secondary cutting on the film material. Please refer to Figure 3. For example, each row of F or G coefficients is about 50 cutters, the cutters of each row are set at equal intervals, and the distance between the two adjacent cutters 32 of the first row F X is defined as the tool distance, and the distance between the tips of the two adjacent cutters 34 in the second row G is also X. The tool distance X in this embodiment is 0.22 mm. In the conveying direction Z of the material S to be cut, the cutting knives 32 and 34 of the two cuts F and G are arranged in a staggered manner, with a level difference D. The level difference D is exactly half of the knife distance X. Therefore, the second row The position of each cut 34 of G is exactly in the center of the two cuts 32 of F in the first row. The cutting knife 72 or 74 used can be a round knife (as shown in FIG. 1) or a straight knife (as shown in FIG. 8).

1 and 4, the material S to be cut is drawn by the roller 22 of the conveying device 20 and continuously fed to the cutting device 30, and the material S to be cut is cut by the cutting device 30. The first row F The cutter 32 cuts a plurality of first cuts 42 from the material S to be cut. The cutting depth of the cutters 32 is cut to the cushion layer 15, that is, the cutter 32 cuts the elastic film material 10, However, the cushion layer 15 is not cut. Please refer to FIG. 5, after cutting by the cutter 32 of the first row F, the elastic film 10 is cut into a plurality of filaments 40, the width of each filament 40 is 0.22mm, which is the same as the knife distance X的size. Although the cutters 32 cut the elastic film material 10, since the film material 10 is combined with the cushion layer 15, and the cushion layer 15 is not cut and remains intact, the elastic film material 10 and the filaments The body 40 remains intact and positioned on the cushion layer without falling apart.

1 and 6, the material S to be cut is continuously fed to the cutting knives 34 of the second row G by the roller 22, and is cut for the second time by the cutting knives 34 of the second row G. The waiting cutter 34 cuts a plurality of second cut marks 44 on the material S to be cut. The cutting depth of the cutters 34 is at least cut to the cushion layer 15, that is, the cutter 34 cuts the elastic film 10, but the cutter 34 cuts or does not cut the cushion layer 15, it is the implementation. s Choice. The preferred embodiment shows that the cutters 34 do not cut the cushion layer 15.

6 and 7, after the first row of F-cutting knives 32 and the second row of G-cutting knives 34 perform secondary cutting, the elastic film 10 is cut into a first cut 42 and a second cut 44. Referring to FIG. 3, since the position of each cutter 34 of the second row G is exactly in the center of the second cutter 32 of the first row F, the second cut 44 of each cutter 34 of the second row G The system is cut at the center of each filament 40, and each filament 40 is evenly cut into half. After the above-mentioned cutting procedure, it is convenient for the elastic film material 10 to cut a plurality of elastic threads 50 of the present invention. The width B of each elastic thread 50 is preferably 0.11 mm, that is, half of the blade distance X The size is also the size of the aforementioned level difference D. After the cutting is completed, the elastic filaments 50 are separated from the cushion layer 15. Since this embodiment cuts a considerable length of the elastic film 10, for example 3000 meters to 4000 meters long, each elastic yarn 50 with a length of 3000 meters to 4000 meters can be cut. Please refer to Figure 8. After cutting, each elastic yarn 50 is rolled into a roll for use. After the cushion layer 15 is separated from the elastic yarn, it is also rolled into a roll.

The cutting method and cutting structure provided by the present invention can cut elastic yarns from elastic film materials, and can be used to cut out fine elastic yarns with a width of 0.05 mm to 0.25 mm to be woven into elastic cloth for making clothes . Furthermore, the cutting method of the present invention can cut out the elastic threads whose width is smaller than the thickness of the elastic film material. When cutting, since the width of the knife distance X is greater than the thickness T, the elastic wire will not be caught between the cutters during the cutting process, and the cutting operation can be performed reliably.

FIG. 9 is a second preferred embodiment of the cutting method and cutting structure provided by the present invention. The components that are the same as the first preferred embodiment use the same reference numerals to facilitate understanding and avoid redundant description.

In this embodiment, three rows of F, G, and H cutters 32, 34, and 36 are used to cut the elastic film 10 three times to cut the elastic film into a plurality of fine elastic threads 50. Please refer to FIG. 10, the cutters 32, 34, and 36 in each row are set at the same knife distance X. The knife distance X in this embodiment is three times the width of the elastic yarn 50 to be made. The cutters 32, 34, and 36 of the three rows of F, G, and H are arranged with equal position difference, that is, the position difference D of the cutter 32 of the first row and the cutter 34 of the second row is the same as that of the second row. The position difference D between the cutter 34 in the row and the cutter 36 in the third row is that the cutters in the three rows F, G, and H are arranged in a state of equal position difference. Therefore, in the conveying direction Z of the elastic film 10, a second row of cutting knives 34 and a third row of cutting knives 36 are located between two adjacent first rows of cutting knives 32, and the first row The positions of the cutting knives 34 in the two rows and the cutting knives 36 in the third row are such that the gap between the two cutting knives 32 in the first row is equally divided into three equal parts.

In this way, referring to FIG. 11, the cutter 32 of the first row F cuts a plurality of first cuts 42 on the elastic film 10 and cuts a plurality of filaments 40, and the cutters 34 of the second row G A plurality of second cut marks 44 are cut out of the elastic film material 10. As can be understood from FIG. 10 and FIG. 11, each second cut mark 44 is located between two adjacent first cut marks 42. The cutter 36 of the third row H cuts a plurality of third cut marks 46 on the elastic film 10, and each third cut mark 46 is also located between two adjacent first cut marks 42 and is located adjacent to each other. There is a second cut 44 and a third cut 46 between the two second cut marks 44, and the two adjacent first cut marks 42 have a second cut mark 44 and a third cut mark 46. The second cut mark 44 and the third cut mark 46 are The gap between the two first cuts 42 is equally divided. That is, as shown in FIG. 11, each silk body 40 is cut by a second cut 42 and a third cut 46, and the second cut 44 and the third cut 46 just cut each silk 40 The width is divided into three equal parts. The position difference between the tools shown in this embodiment of Figure 10 D is exactly the width B of the cut elastic yarn 50. After the elastic film 10 is cut three times, a plurality of elastic filaments 50 with the same width B are cut. After that, the cut elastic yarn 50 is separated from the cushion layer 15, and the elastic yarn 50 is wound up into a roll.

The method of the present invention can cut the elastic film material more than three times, for example, cut four times to form several first cut marks, several second cut marks, several third cut marks and several fourth cut marks. There are a second cut, a third cut, and a fourth cut in the gap between two adjacent first cuts, and the second, third, and fourth cuts bisect the two phases The gap between the adjacent first cuts, that is, the first cutting cuts the film material into a plurality of filaments of equal width, and the subsequent times of cutting (second to fourth cuts) divide each filament equally Ground cut out four elastic filaments of equal width. In this way, the plurality of elastic yarns after cutting have the same cutting width.

The cutting method of the present invention can cut various elastic film materials into fine elastic filaments 50. As shown in Figures 13-17, the cross-sections of several elastic filaments are formed by cutting. The cross-section of each elastic filament 50 is rectangular and has a rectangular shape. Width B and a thickness T, the two side surfaces 56 are cut surfaces, the two side surfaces form a pair of parallel sides, and the width B is formed between the two side surfaces 56; the thickness T is the thickness of the elastic film 10, elastic The top surface of the wire 50 is the top surface of the elastic membrane material 10, and the bottom surface of the elastic wire is the bottom surface of the elastic membrane material. The width B of the elastic yarn is not greater than (less than or equal to) its thickness T. The elastic yarn 50A shown in FIG. 13 is a homogeneous elastic yarn, not a composite layered structure; the elastic yarns 50B and 50C shown in FIGS. 14 and 15 are elastic yarns with a composite structure with a reflective function, which have a body 51 and At least one surface of the body is provided with a reflective layer 52; and the elastic yarns 50D and 50E shown in FIGS. 16 and 17 are elastic yarns with a composite structure with luminous function. At least one surface has a luminous layer 54. The functional surface layer provided on the surface of the elastic yarn is not limited to the luminous surface layer and the reflective surface layer, and may be, for example, a color surface layer or a surface layer with other functions.

The cutting method of the present invention can cut the elastic film material into elastic filaments, especially the elastic filaments that can be cut into fine widths, so that the elastic filaments can be woven into various textiles by various weaving techniques. For example, the textile 60 shown in FIG. 18 is based on this It is made of the invented fine elastic yarn 50. The textile woven with this fineness of the fine elastic yarn can be made into clothing for the human body, such as clothes, shoes, or bags (bags, backpacks), which can be made into The clothing includes: general clothes, swimwear, sportswear, sports pants, T-shirts, ribbons and other clothing. The elastic yarn of the present invention is soft, and the made clothing is soft, suitable for wearing and having a good touch.

The elastic yarn of the present invention can also be used as embroidery thread or suture on textiles or cloth.

With the cutting method of the present invention, the distance X between two adjacent cutters is multiplied by the width B of the elastic yarn 50, so that during the cutting process, the gap between the two adjacent cutters has enough space to accommodate the elastic film, which reduces The clamping pressure and frictional resistance between the elastic film material and the cutter can effectively implement the cutting operation of cutting the elastic film material to cut the elastic yarn with a fine wire diameter.

The above-disclosed embodiments are merely illustrative of the technical means of the present invention rather than limiting. Any equivalent modification of the present invention should be regarded as the protection scope of the present invention.

10: Elastic membrane material

15: Cushion

20: Conveying equipment

22: Roller

30: Cutting equipment

32, 34: Cutter

S: Material to be cut

T: thickness of elastic membrane

F: first column

G: second column

R: Roll

Z: Conveying direction

Claims (15)

A method for cutting elastic filaments is to cut a plurality of elastic filaments from an elastic membrane material. The cutting method includes: preparing an elastic membrane material that is detachably combined with at least one cushion layer to form an elastic membrane material. For the material to be cut, the cushion layer has a lower ductility than the elastic film material; convey the material to be cut to a cutting device, and perform at least two cuts on the elastic film material, including the first cut and after the first cut At least one subsequent number of cuts, each cut cuts the elastic film material, wherein the first cut is to cut a plurality of filaments with the same width from the elastic film material; the subsequent times of cutting will each cut The silk body is cut into at least two elastic threads with the same width; and the elastic threads are separated from the cushion layer to form the elastic threads. The cutting method according to claim 1, wherein: the cutting width of the cut elastic wire is 0.05mm~0.5mm. The cutting method according to claim 1, wherein: in the at least two cuttings, the cutting does not cut the cushion layer before the last cutting is performed. The cutting method according to claim 1, wherein: the cutting device cuts the elastic film a second time; the cut marks of each second cut are located in the center of two adjacent cut marks of the first cut. The cutting method according to claim 1, wherein: the cutting device cuts the elastic film with at least three times of cutting; the gap between the cut marks of the two adjacent first cuts has the second cut and at least the first cut The plural cut marks formed by three cuts, and the plural cut marks between two adjacent cut marks of the first cut halves the gap between the two cut marks of the first cut. The cutting method according to claim 1, wherein: the thickness of the elastic film material is 0.09 mm to 0.5 mm. The cutting method according to claim 1, wherein: the cushion layer is made of PET. An elastic yarn cutting structure, which cuts an elastic film material into a plurality of elastic yarns, includes: a conveying device and a cutting device; the conveying device conveys the elastic film material to the cutting device so that the cutting device cuts The elastic film; the cutting device has at least two rows of multiple cutting knives, which are arranged front and back in the conveying direction of the elastic film, and the cutting knives in each row have the same knife distance, and in the conveying direction of the elastic film Above, the at least two rows of cutters have at least one position difference; the at least two rows of cutters cut the elastic film material into a plurality of elastic filaments. The cutting structure according to claim 8, wherein: the position difference of the cutting knives in two adjacent rows is the width of each elastic yarn to be cut. The cutting structure according to claim 8, wherein: the elastic film material is detachably combined with at least one cushion layer, and the ductility of the cushion layer is lower than that of the elastic film material. An elastic yarn is produced by the cutting method according to any one of claims 1 to 7, and the elastic yarn is a yarn with a continuous length, and the cross-section of the elastic yarn has a pair of parallel sides. The elastic thread according to claim 11, wherein: the elastic thread has a width ranging from 0.05 mm to 0.5 mm. The elastic yarn according to claim 11, wherein: the elastic yarn has a rectangular cross-section with a width and a thickness, two side surfaces of the elastic yarn are cut surfaces, the width is formed between the two side surfaces, and the elastic The width of the wire is not greater than its thickness. As the elastic yarn described in claim 11, the elastic yarn can be made into sewing thread or embroidery thread. A textile product comprising a woven product woven from the elastic yarn described in any one of claims 11 to 13.

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