JP2020120918A - Hook-and-loop fastener and bedding cover - Google Patents

Abstract

To provide a hook-and-loop fastener that can reduce damage of fabric during washing while suppressing the hooking of the fabric, and can obtain high joining strength.SOLUTION: A hook-and-loop fastener is provided as follows: a first gray fabric having a loop fiber layer and a second gray fabric having a hook fiber layer are provided; the loop fiber layer is made of multiple loop fibers formed of first false-twist crimp pile yarn; the hook fiber layer is made of multiple hook fibers formed of second false-twist crimp pile yarn; the first false-twist crimp pile yarn is the untwisted false-twist crimp pile yarn where a bundle of resin fibers having the single yarn fineness of 0.15 dtex or more and 0.7 dtex or less is subjected to false twist processing by a false-twist coefficient of 20,000-32,000; and the second false-twist crimp pile yarn is the untwisted false-twist crimp pile yarn where a bundle of resin fibers having the single yarn fineness of 1.5 dtex or more and 3.8 dtex or less is subjected to the false twist processing by a false-twist coefficient of 20,000-32,000.SELECTED DRAWING: Figure 7A

Description

The present invention relates to a surface fastener and a bedding cover using the same.

Conventionally, a bedding cover has been proposed in which upper and lower covers and the like can be joined by using a fastener. For example, Patent Document 1 discloses a bedding cover in which a fastener is provided on the outer edge portion of the upper surface cover and the outer edge portion of the lower surface cover so that the upper surface cover and the lower surface cover can be joined with the fastener.

However, according to the bedding cover, although the upper cover and the lower cover can be attached and detached by opening and closing the fastener, there is a drawback that it takes time to open and close the fastener provided around the outer edge portion. On the other hand, Patent Document 2 discloses a bedding cover in which fastener tapes (face fasteners) are provided near the edges of the top cover and the bottom cover, and the top cover and the bottom cover are joined by the face fasteners.

On the other hand, in Patent Document 3, a raw cloth a having a knitting structure having a single fiber diameter of 700 nm (single yarn fineness: about 0.005 dtex) and a single yarn fiber fineness obtained by shirring (cutting the tip end of the pile yarn) There is disclosed a surface fastener comprising a napped raw cloth b composed of a napped part having a diameter of 4.5 dtex (diameter: about 20.4 μm) and a ground texture part.

JP, 10-276867, A JP 2012-90768 A Japanese Patent No. 5692958

However, when a conventional hook-and-loop fastener having a rigid hook-shaped protrusion is used as the fastener tape used in the bedding cover described in Patent Document 2, the bedding cover is washed when the bedding cover is washed using a washing machine. There was a problem that the fabric was easily damaged (fluffy).

On the other hand, in the surface fastener described in Patent Document 3, since ultrafine fibers having a single fiber diameter of 1 μm or less are used, there is a problem that the fibers are easily broken and fluffing easily occurs. Further, since the surface fastener has a high frictional resistance, the fabric is easily caught, and in a bedding cover using this, wrinkles are likely to occur when the bedding cover is set on the bedding, so that the bedding cover can be set smoothly. There was a problem that it was difficult to do.

In view of the above-mentioned problems, the present invention is capable of reducing the damage of the cloth during washing while suppressing the catching of the cloth, and a surface fastener capable of obtaining a high bonding force, a manufacturing method thereof, and a bedding cover using the same. The purpose is to provide.

A surface fastener according to the present invention is a surface fastener having a first raw cloth having a loop fiber layer and a second raw cloth having a hook fiber layer, wherein the loop fiber layer is a first false twist crimp. The hook fiber layer is composed of a plurality of loop fibers formed of pile yarns, and the hook fiber layer is composed of a plurality of hook fibers formed of a second false twist crimp pile yarn. The crimped pile yarn is a non-twisted false-twisted wound obtained by false-twisting a bundle of resin fibers having a single yarn fineness of 0.15 dtex or more and 0.7 dtex or less under the conditions of a false twist coefficient of 20,000 to 32,000. The second false twist crimped pile yarn is a crimped pile yarn, in which the bundle of resin fibers having a single yarn fineness of 1.5 dtex or more and 3.8 dtex or less has a false twisting coefficient of 20,000 to 32,000. It is a false-twisted false-twist crimped pile yarn that has been false-twisted, and has a configuration in which the first raw cloth and the second raw cloth are joined by engaging the loop fiber and the hook fiber.

According to this configuration, it is possible to reduce the damage of the cloth at the time of washing while suppressing the catching of the cloth, and to obtain a high joining force. More specifically, the first false twist crimp pile yarn and the second false twist crimp pile yarn are untwisted false twist crimp pile yarns in which a bundle of polyester fibers is false twisted. The hook fiber may have a configuration in which the vicinity of the apex of the loop formed by the second false twist crimp pile yarn is cut.

A bedding cover according to the present invention is a bedding cover having a hook-and-loop fastener having the above structure, an inner cover fixed to an outer peripheral surface of the bedding, and an outer cover, and one of the inner cover and the outer cover has the surface. The first raw cloth of the fastener is provided on the other side, and the second raw cloth of the surface fastener is provided on the other side. By joining the first raw cloth and the second raw cloth, the outer cover is fixed to the upper surface of the inner cover. It will be configured. According to this configuration, it is possible to enjoy the advantages of the surface fastener having the above configuration.

A bedding cover according to the present invention is a bedding cover wrapped around an outer peripheral surface of the bedding, and the first and second raw cloths of the above-described surface fastener are provided so as to face each other in the wound state. Then, the first raw cloth and the second raw cloth are joined together to be fixed in the wound state. According to this configuration, it is possible to enjoy the advantages of the surface fastener having the above configuration.

The manufacturing method according to the present invention is a method for manufacturing a surface fastener having a first raw cloth having a loop fiber layer and a second raw cloth having a hook fiber layer, and having a single yarn fineness of 0.15 dtex or more. A first step of obtaining a non-twisted first false-twist crimped pile yarn by false-twisting a bundle of resin fibers of 7 dtex or less under the condition of a false-twist coefficient of 20,000 to 32,000; A second step of forming the loop fiber layer by forming a plurality of loop fibers by using the false twist crimp pile yarn, and a bundle of resin fibers having a single yarn fineness of 1.5 dtex or more and 3.8 dtex or less. Third false-twist crimping pile yarn in which a false-twisting second false-twist crimping pile yarn is obtained by performing false-twisting processing on the condition that the false-twisting coefficient is 20,000 to 32,000. A fourth step of forming the hook fiber layer by forming a plurality of hook fibers by using a yarn, wherein the apex of the loop formed by the second false twist crimp pile yarn in the fourth step. The hook fiber is formed by cutting the vicinity.

ADVANTAGE OF THE INVENTION According to the surface fastener which concerns on this invention, it becomes possible to reduce the damage|damage of the cloth at the time of washing while suppressing the catching of cloth, and to obtain high joining force. Further, according to the bedding cover of the present invention, it is possible to enjoy the advantages of the surface fastener of the present invention. Further, according to the manufacturing method of the present invention, the surface fastener of the present invention can be manufactured.

It is a perspective view of a bedding cover (mattress cover) according to the present embodiment. It is a perspective view from the other viewpoint of the bedding cover. It is explanatory drawing regarding the inner cover which concerns on this embodiment. It is a perspective view of the inner cover concerned in the state where the mattress was stored. It is a perspective view of the outer cover which concerns on this embodiment. It is explanatory drawing regarding the characteristic shape of the fiber of the pile thread which concerns on 1st raw cloth. It is explanatory drawing regarding the knitting method of the ground thread which concerns on 1st raw cloth. It is explanatory drawing regarding how to knit the pile thread|yarn which concerns on 1st raw fabric. It is explanatory drawing regarding the characteristic shape of the fiber of the pile thread which concerns on 2nd raw cloth. It is explanatory drawing regarding the knitting method of the ground thread which concerns on 2nd raw cloth. It is explanatory drawing regarding the knitting method of the ground thread which concerns on 2nd raw cloth. It is a cross-sectional photograph of the 1st raw fabric and the 2nd raw fabric in a joined state. It is a photograph of a cross section of a portion of the first raw cloth. It is a cross-sectional photograph of the part of the 2nd raw cloth. It is a perspective view of a pillow using a bedding cover (pillow cover) according to the present embodiment. It is a perspective view of the bedding cover. It is explanatory drawing regarding the procedure of evaluation using a joining force measuring device. It is explanatory drawing regarding the procedure of evaluation using a joining force measuring device. It is explanatory drawing regarding the procedure of evaluation using a joining force measuring device. It is a table regarding the manufacturing method and evaluation results of each example and each comparative example.

Embodiments of the present invention will be described below with reference to the drawings. Note that the up, down, left, right, and front and rear directions (directions orthogonal to each other) in the following description are as shown in the drawings. Each of these directions is merely defined for the sake of easy understanding of the following description.

1. Configurations of surface fastener and bedding cover, etc. FIG. 1A is a perspective view of a bedding cover 1 (mattress cover) according to the present embodiment, and FIG. 1B is a perspective view of the bedding cover 1 when viewed from another angle. The bedding cover 1 includes an inner cover 2 that houses a rectangular mattress 10 (see FIG. 2) and an outer cover 3 that is fixed to the upper surface of the inner cover 2. 1A and 1B show the bedding cover 1 with the mattress 10 accommodated therein.

FIG. 2 shows that the cushion 10 can be put in and taken out from the inner cover 2. FIG. 3 is a perspective view of the inner cover 2 with the mattress 10 accommodated therein. The inner cover 2 has a top cloth 21 and a main body portion 22. The main body portion 22 has a left side fabric 22a, a rear side fabric 22b, a right side fabric 22c, a front side fabric 22d, and a lower face fabric 22e, and the mattress 10 is opened through the upper opening. It can be taken in and out freely.

The size of the inner cover 2 is set so as to fit the mattress 10. When the mattress 10 is housed in the main body portion 22 and the opening of the main body portion 22 is closed with the upper surface fabric 21, the entire mattress 10 becomes the inner cover 2. It will be dressed just enough. In this state, the upper surface cloth 21 is the upper surface of the mattress 10, the left side cloth 22a is the left surface of the mattress 10, the rear side cloth 22b is the rear surface of the mattress 10, and the right side cloth 22c is the right surface of the mattress 10. The front side surface cloth 22d covers the front surface of the mattress 10 and the lower surface cloth 22e covers the lower surface of the mattress 10.

A pair of opening/closing fasteners 23 a and 23 b are provided at the boundary between the upper surface fabric 21 and the main body 22. More specifically, one opening/closing fastener 23a is provided around the entire outer edge of the upper surface fabric 21. Further, the other opening/closing fastener 23b is provided on the entire circumference of the edge of the opening of the main body portion 22 (upper ends of all the side surface materials 22a to 22d on the front, rear, left and right sides).

The upper surface fabric 21 is detachably attached to the main body portion 22 using the opening/closing fasteners 23a and 23b. When the mattress 10 is taken in and out, the opening/closing fasteners 23a and 23b may be opened to open the main body portion 22. In the present embodiment, the upper surface fabric 21 and the main body 22 are completely separated when the opening/closing fasteners 23a and 23b are opened, but they may be partially connected. For example, the left edge of the top fabric 21 may be connected to the body portion 22, and the rear, right, and front edges of the top fabric 21 may be joined to the body portion 22 using an opening/closing fastener.

Among the cloths of the inner cover 2, a double Russell cloth is adopted for the upper surface cloth 21 and the lower surface cloth 22e. On the other hand, for each of the front, rear, left and right side cloths 22a to 22d, a first raw cloth described later is adopted.

FIG. 4 is a perspective view of the outer cover 3. The outer cover 3 is a sheet-like cover having a rectangular outer shell upper surface cloth 31 and outer shell side surface cloths 32a to 32d connected to front, rear, left and right outer edges of the outer shell upper surface cloth 31. The shape and dimensions of the outer shell upper surface material 31 when viewed from above are the same as the shape and dimensions of the upper surface material 21 of the inner cover 2 when viewed from above. A quilting cloth is used for the outer shell upper surface cloth 31, and a second raw cloth described later is used for each of the front, rear, left, and right outer shell side surface cloths 32a to 32d.

The outer cover 3 is arranged such that the outer shell upper surface cloth 31 is overlaid on the upper surface cloth 21, and the outer shell side surface cloths 32a to 32d bent 90° from the outer shell upper surface cloth 31 are the side surface cloths of the inner cover 2. It can be attached to the inner cover 2 by being joined to 22a to 22d. The position of the bending line corresponding to the boundary between the outer shell upper surface cloth 31 and each of the outer shell side surface cloths 32a to 32d substantially coincides with the position of the outer edge of the upper surface cloth 21.

The first raw cloth is used for the side surface fabrics 22a to 22d of the inner cover 2, and a loop fiber layer described later is formed on the front side (the side in contact with the outer cover 3). A second raw cloth is used for the outer shell side surface fabrics 32a to 32d of the outer cover 3, and a hook fiber layer is formed on the back surface (the side in contact with the inner cover 2). The outer cover 3 is fixed to the surface of the inner cover 2 by joining the first raw cloth and the second raw cloth. The first raw cloth and the second raw cloth function as a surface fastener joined by the engagement of the loop fiber and the hook fiber. In this way, by attaching the outer cover 3 to the inner cover 2 that houses the mattress 10 in advance, the fitting of the bedding cover 1 to the mattress 10 is completed.

In the bedding cover 1 in this state, as shown in FIGS. 1A and 1B, the side surface fabrics 22 a to 22 d bent by 90° with respect to the upper surface fabric 21 of the inner cover 2 are the outer shell upper surface fabric of the outer cover 3. The outer shell side fabrics 32a to 32d, which are bent by 90° with respect to 31, are joined to the outer shell side fabrics 32a to 32d, respectively. As a result, even if tension is generated on the outer shell upper surface material 31 of the outer cover 3 due to the user rolling over or the like, the outer shell side surface materials 32a to 32d are less likely to be separated from the inner cover 2, and the outer cover 3 is It is possible to prevent slippage and wrinkles due to a slight shift.

It should be noted that each of the outer shell side surface materials 32a to 32d has a trapezoidal shape in which the side connected to the outer shell upper surface material 31 is the lower base. Further, the upper base of the trapezoid (opposite side parallel to the lower base) is shorter than the lower base, and the height dimension of the trapezoid is slightly smaller than the vertical dimension of each side cloth 22a to 22d of the inner cover 2. It is getting smaller. As a result, the bent outer shell side surface fabrics 32a to 32d are surely set within the range of the side surface fabrics 22a to 22d.

However, the shape of the outer shell side surface materials 32a to 32d is not particularly limited, and may be, for example, a rectangular shape or an arc shape. In the present embodiment, the inner cover 2 has a bag shape that completely covers the mattress 10 as an example, but an opening may be provided on the upper surface, the side surface, or a part of the bottom surface. Further, in the present embodiment, the outer cover 3 has a planar shape without three-dimensional corners as an example, but it may have a half bag shape with three-dimensional corners or curved surfaces. .. The first raw cloth used for the inner cover 2 and the second raw cloth used for the outer cover 3 may be used on the entire side surface of the bedding cover 1 or may be used on only a part of the side surface.

As described above, the bedding cover 1 includes the surface fastener having the first raw cloth and the second raw cloth, the inner cover 2 fixed to the outer peripheral surface of the mattress 10 (bedding), and the outer cover 3, and the inner cover. A first raw cloth is provided on one of the outer cover 2 and the outer cover 3, and a second raw cloth is provided on the other. Further, in the bedding cover 1, the outer cover 3 is fixed to the upper surface of the inner cover 2 by joining the first raw cloth and the second raw cloth.

Next, the first raw cloth (hereinafter, sometimes referred to as “first raw cloth LP”) used for the side surface fabrics 22a to 22d of the inner cover 2 will be described in more detail. FIG. 5A schematically shows the characteristic shape of the fibers of the pile yarn 41 that form the loop fiber layer LP2 of the first raw cloth LP. FIG. 5B schematically shows how to weave the ground yarn 40 that constitutes the ground layer that fixes the pile yarn 41. FIG. 5C schematically shows how the pile yarn 41 is knitted with respect to the ground yarn 40. The first raw cloth LP is composed of a ground layer LP1 that forms the main body of the cloth that spreads in the two-dimensional direction, and a loop fiber layer LP2 that includes a plurality of loops that extend in the vertical direction from the ground layer LP1.

In the present embodiment, the first raw cloth LP is knitted by the circular knitting machine using the ground yarn 40 and the pile yarn 41. The ground layer LP1 is formed by the ground yarn 40, and the loop fiber layer LP2 is formed by the pile yarn 41. As shown in FIG. 5B, the loop formed by the ground thread 40a in the first row is locked by the ground thread 40b in the second row, and similarly, the loops are sequentially locked in the second and third rows. The planar ground layer LP1 is formed.

Further, as shown in FIG. 5C, the pile yarn 41 is knitted together with the ground yarn 40, and in addition to the loop formed by the ground yarn 40, a plurality of loop fibers (loop-shaped engaging elements) formed of only the pile yarn 41 are formed. ) Is formed. As a result, a loop fiber layer LP2 extending vertically from the planar ground layer LP1 is formed.

Next, the second raw cloth (hereinafter, also referred to as “second raw cloth CP”) used for the outer shell side surface fabrics 32a to 32d of the outer cover 3 will be described in more detail. FIG. 6A schematically shows the characteristic shape of the fibers of the pile yarn 51 after cutting, which constitutes the hook fiber layer CP2 of the second raw cloth CP. FIG. 6B schematically shows a method of knitting the ground yarn 50 that constitutes the ground layer that fixes the pile yarn 51. FIG. 6C schematically shows how the pile yarn 51 is knitted with respect to the ground yarn 50.

The pile yarn 51 forms a plurality of hook fibers (hook-shaped engaging elements) by cutting the vicinity of the apex. The second raw cloth CP is composed of a ground layer CP1 that forms the main body of the cloth that spreads in the two-dimensional direction, and a hook fiber layer CP2 that is composed of a plurality of fibers that extends in the vertical direction from the ground layer CP1.

In the present embodiment, the second raw fabric CP is knitted by the circular knitting machine using the ground yarn 50 and the pile yarn 51. The ground layer CP1 is formed by the ground yarn 50, and the hook fiber layer CP2 is formed by the pile yarn 51. As shown in FIG. 6B, the loop formed by the ground thread 50a in the first row is locked by the ground thread 50b in the second row, and similarly, the loops are sequentially locked in the second and third rows. The planar ground layer CP1 is formed.

Further, as shown in FIG. 6C, the pile yarn 51 is knitted together with the ground yarn 50, and forms a loop composed of only the pile yarn 51, in addition to the loop formed by the ground yarn 50. This loop forms a hook fiber (hook-like engaging element) by cutting around the apex, and a hook fiber layer CP2 extending vertically from the planar ground layer CP1 is formed.

FIG. 7A shows a cross-sectional photograph of the first raw cloth LP and the second raw cloth CP in the surface fastener in the state where the loop fiber layer LP2 and the hook fiber layer CP2 are joined. Further, FIG. 7B shows a cross-sectional photograph of the portion of the first raw cloth LP, and FIG. 7C shows a cross-sectional photograph of the portion of the second raw cloth CP. In the surface fastener shown in FIG. 7A, a region generally indicated by X1 is the ground layer LP1 of the first raw cloth LP, and a region generally represented by X2 is a loop fiber layer LP2. The area generally indicated by Y1 is the ground layer CP1 of the second raw cloth CP, and the area generally indicated by Y2 is the hook fiber layer CP2.

As shown in FIG. 7A, in the joined state, a plurality of loop fibers (loop-shaped engaging elements) forming the loop fiber layer LP2 are gathered loosely, and the hook fiber layer CP2 is provided in the gap. A plurality of random spiral-shaped hook fibers (hook-shaped engaging elements) that are included are included at various angles. By engaging the plurality of hook fibers with the plurality of loop fibers at various angles, not only the frictional force in the horizontal direction is increased but also a proper joining force is obtained in the vertical direction.

In order to obtain a proper joining force even in the vertical direction, the plurality of loop fibers constituting the loop fiber layer LP2 are loosely loosened, and the tips of the plurality of hook fibers constituting the hook fiber layer CP2 are It is required to project at various angles.

In order to satisfy the requirement, the pile yarn forming the loop fiber layer LP2 is a false twist of a bundle of polyester fibers having a single yarn fineness of 0.15 dtex or more and 0.7 dtex or less with a false twist coefficient of 20,000 to 32,000. It is supposed to be processed. When the single yarn fineness is less than 0.15 dtex, the fibers are easily broken, and thus fluffing easily occurs due to friction. On the other hand, when the fineness is more than 0.7 dtex, the elasticity of the loop fiber becomes too large and the hook fiber is less likely to enter the gap between the loop fibers.

If the false twist coefficient is less than 20,000, the false twist crimped yarn cannot be sufficiently crimped, and the loop fiber is less likely to be unraveled and the hook fiber is less likely to be engaged. On the other hand, if the false twist coefficient exceeds 32,000, the strength of the false twist crimped yarn will be reduced, or the gap between the loop fibers will be too wide, and the frictional force (holding force) with the hook fibers will be reduced. In the present application, the value of the false twist coefficient K is calculated by using the following formula 1.
(Formula 1) K=T×D ^0.5
However, T represents the false twist number (twists/m), and D represents the fineness (dtex).

As the false twisting method, basically any method such as a commonly used pin type, friction disc type, nip belt type, and air twisting type may be adopted. The false twisting temperature (heat setting temperature) is preferably 180° C. or higher and 230° C. or lower because if the temperature is less than 180° C., sufficient crimp cannot be obtained and conversely, if it exceeds 230° C., the fiber is likely to break. The false twist draw ratio is preferably 1.2 to 1.8.

If the height of the loop fiber forming the loop fiber layer LP2 is less than 1 mm, it is difficult to engage with the hook fiber, and if it exceeds 3 mm, the stiffness of the loop fiber is weakened and the bonding strength is reduced, and therefore the height is 1 mm or more and 3 mm or less. It is preferable. Although the fineness of the pile yarn 41 is not particularly limited, it is preferably approximately the same as the fineness of the ground yarn, for example, a fineness of 40 dtex or more and 120 dtex or less.

Further, in order to meet the above requirements, the pile yarn forming the hook fiber layer CP2 is a bundle of polyester fibers having a single yarn fineness of 1.5 dtex or more and 3.8 dtex or less, and is temporarily twisted with a false twist coefficient of 20,000 to 32,000. It is supposed to be twisted. If the single yarn fineness is less than 1.5 dtex, the elasticity of the hook fibers is small and it is difficult to maintain the hook shape, and it becomes difficult for the hook fibers to enter the gaps between the loop fibers. On the other hand, if the single yarn fineness exceeds 3.8 dtex, the yarn becomes too rigid, and the fabric is easily damaged during washing and tingling when it rubs against the skin.

If the false twist coefficient is less than 20,000, the false twist crimped yarn cannot be sufficiently crimped, the hook fibers are hard to be unraveled, and the loop fibers are difficult to enter. On the other hand, if it exceeds 32,000, the strength of the false twist crimped yarn will be reduced, or the tips of the hook fibers will be excessively bent, making it difficult to enter the gaps between the loop fibers.

As the false twisting method, basically any method such as a commonly used pin type, friction disc type, nip belt type, and air twisting type may be adopted. The false twisting temperature (heat setting temperature) is preferably 180° C. or higher and 230° C. or lower because if the temperature is less than 180° C., sufficient crimp cannot be obtained and conversely, if it exceeds 230° C., the fiber is likely to break. The false twist draw ratio is preferably 1.2 to 1.8.

If the height of the hook fibers forming the hook fiber layer CP2 is less than 0.5 mm, it is difficult to engage with the hook fibers, and if it exceeds 2 mm, the stiffness of the loop fibers becomes weak and the bonding strength decreases, so 0.5 mm or more. It is preferably 2 mm or less. The ratio of the height of the hook fiber to the height of the loop fiber is preferably 0.3 or more and 0.8 or less.

Although the fineness of the pile yarn 51 is not particularly limited, it is preferably the same as the fineness of the ground yarn, for example, the fineness of 40 dtex or more and 120 dtex or less is preferable. In the present embodiment, the first cover cloth is used for the inner cover 2 and the second cover cloth is used for the outer cover 3, but instead, the second cover cloth is used for the inner cover 2 and the outer cover is used. You may use the 1st raw cloth for the cover 3.

Further, both the second raw cloth and the first raw cloth are used for the inner cover 2, and the outer cover 3 is provided with the first raw cloth in correspondence with the arrangement of the second raw cloth and the first raw cloth of the inner cover 2. Both the second raw cloth and the second raw cloth may be arranged. For example, the first raw cloth is used on both side surfaces of the inner cover 2 in the height direction (the head side and the leg side), and the second raw cloth is used on both widthwise ends (the right hand side and the left hand side). A configuration in which the second raw cloth is used on both side surfaces (the head side and the leg side) of the outer cover 3 in the height direction, and the first raw cloth is used on both widthwise ends (the right hand side and the left hand side). May be adopted. Thereby, the mounting direction of the outer cover 3 can be limited.

In the mattress cover for a double bed, which has the same length in the height direction and the width direction, it is assumed that the outer cover is installed in the wrong direction (shifted by 90 degrees). However, even in such a case, if the configuration is adopted, the first cover cloth or the second cover cloth of the inner cover and the outer cover cannot obtain a sufficient joining force, so that the user installs the wrong direction. It becomes easier to notice that.

Although the bedding cover using the surface fastener composed of the first raw cloth and the second raw cloth has been described above, the surface fastener should be applied to other kinds of bedding covers and various articles other than the bedding cover. Is also possible. Next, another type of bedding cover to which the hook-and-loop fastener is applied will be described, taking a pillow cover form (bedding cover 120) as an example.

FIG. 8A is a perspective view of the pillow 100 formed using the cushion 110 (pillow body) and the bedding cover 120. FIG. 8B is a perspective view of the bedding cover 120 in a state of being removed from the cushion 110.

The bedding cover 120 is a substantially rectangular flat pillow cover that is wound around and fixed to the outer peripheral surface of the substantially rectangular parallelepiped cushion 110, and includes a pillow upper surface cloth 121, a first end cloth 122, and a second end cloth 123. Have. The first end cloth 122 is connected to one end of the pillow upper surface cloth 121 in the longitudinal direction, and the second end cloth 123 is connected to the other end of the pillow upper surface cloth 121 in the longitudinal direction.

The pillow upper surface fabric 121 is formed of a knit fabric, the first end fabric 122 is formed of a first raw fabric having a loop fiber layer on the front surface, and the second end fabric 123 is a second raw fabric having a hook fiber layer on the back face. It is made of cloth. When the bedding cover 120 is wrapped around the outer peripheral surface of the cushion 110, the front surface of the first end cloth 122 and the back surface of the second end cloth 123 face each other. The facing surfaces function as a hook-and-loop fastener, and the loop fiber layer of the first raw cloth in the first end cloth 122 and the hook fiber layer of the second raw cloth in the second end cloth 123 are joined to each other, thereby providing the bedding. The cover 120 is fixed to the outer peripheral surface of the cushion 110.

In this way, the first end cloth 122 and the second end cloth 123 are joined at a position where the pillow upper surface cloth 121 is bent approximately 180°. As a result, even if tension is generated on the pillow upper surface fabric 121 of the bedding cover 120 due to the user rolling over or the like, the first end fabric 122 and the second end fabric 123 are less likely to peel off, and the bedding cover 120 slips off. And wrinkles can be prevented. In the bedding cover 120, the first end cloth 122 is composed of only the first raw cloth and the second end cloth 123 is composed of only the second raw cloth. One or both of the two-end fabric 123 may be composed of both the first raw cloth and the second raw cloth.

As described above, the bedding cover 120 is wrapped around the outer peripheral surface of the cushion 110 (bedding), and the first raw cloth and the second raw cloth are provided so as to face each other in the rolled state. When the raw cloth and the second raw cloth are joined together, they are fixed in the wound state.

2. Evaluation of a surface fastener In order to evaluate the performance of the surface fastener according to the present embodiment (a surface fastener formed by combining a first raw cloth and a second raw cloth), the applicant manufactured and evaluated the surface fastener of Example 1. The test was conducted. Hereinafter, the manufacturing method and the evaluation test according to Example 1 will be described in detail.

[Manufacturing Method According to Example 1]
As a pile yarn for the first raw cloth, a multifilament drawn yarn obtained by spinning and drawing polyester is false twisted to obtain a non-twisted false twist crimped yarn of 84T288fil (single yarn fineness: about 0.29T). Obtained. This false twisting process was performed under the conditions of a false twist coefficient of 23,000, a draw ratio of 1.32 times, and a heater temperature (heat setting temperature) of 210°C.

As the ground yarn for the first raw cloth, a multifilament yarn 84T288fil made of polyester fiber having a twist number of 800 t/m obtained by spinning and drawing polyester was used. A first raw fabric A1 having a pile length (loop height) of 1.8 mm was manufactured by knitting with a circular knitting machine using these pile yarns and ground yarns.

On the other hand, as a pile yarn for the second raw cloth, a multifilament stretched yarn obtained by spinning and drawing polyester is false twisted, and 110T36fil (single yarn fineness: about 3.06T) non-twisted false twist crimp I got a thread. This false twisting process was performed under the conditions of a false twist coefficient of 23,000, a draw ratio of 1.32 times, and a heater temperature (heat setting temperature) of 210°C.

As the ground yarn for the second raw cloth, a multifilament yarn 84T288fil made of polyester fiber having a twist number of 800 t/m obtained by spinning and drawing polyester was used. A raw fabric having a pile length of 1 mm was produced by knitting with a circular knitting machine using these pile yarns and ground yarns, and then shirring was performed to produce a second raw fabric B1 having a cut height of 0.6 mm.

The surface fastener made of the first raw cloth A1 and the second raw cloth B1 manufactured as described above was used as the surface fastener of Example 1. Further, the surface fastener was evaluated for bonding strength and resistance to washing and abrasion as follows.

[Jointing force evaluation procedure]
The joining force of the surface fastener was evaluated by the following procedure using a joining force measuring device. FIG. 9A to FIG. 9C show how to evaluate the bonding force between two fabrics (first raw fabric and second raw fabric). As shown in these figures, the bonding force measuring device 200 has a pedestal 201 and a drop plate 202. The pedestal 201 has a first horizontal plate 201a and a second horizontal plate 201b each having a rectangular horizontal plane, and a column 201c for fixing these horizontal plates 201a and 201b. The joining force measuring device 200 is rotatable so that the horizontal plates 201a and 201b are kept parallel to each other while being vertically inverted.

Each of the first horizontal plate 201a and the second horizontal plate 201b is an aluminum member having a rectangular parallelepiped shape having a square horizontal surface with a side of 15 cm. The pillar 201c is made of a cylindrical aluminum member having a length of 15 cm, and holds the first horizontal plate 201a and the second horizontal plate 201b in parallel at intervals of 30 cm. The falling plate 202 is formed of an acrylic plate having a square surface with a side of 10 cm and a thickness of 1 mm. As a material of the falling plate 202, a plate such as a cork material or a balsa material may be used instead of the acrylic plate as long as it is a member that can obtain a certain degree of rigidity.

The evaluation using the bonding force measuring device 200 is performed by the following method. The two pieces of dough are preliminarily cut into 10 cm×10 cm squares. Then, as shown in FIG. 9A, one of the two overlapped fabrics is fixed to the first horizontal plate 201a with a double-sided tape, and the other is fixed to the drop plate 202 with a double-sided tape. At this time, a weight (not shown) is provided on the back surface of the falling plate 202 (the opposite side of the cloth) so that the total weight of the cloth fixed to the falling plate 202 is 18 g. Paste and adjust the weight. Further, in the state shown in FIG. 9A, a weight of 100 g is placed on the falling plate 202 for 30 seconds to join the two cloths.

Thereafter, as shown in FIG. 9B, the pedestal 201 is turned upside down to evaluate the joining force. At 1 minute after the reversal, if the state of FIG. 9B is maintained, the joining force is determined to be “GOOD”, and as shown in FIG. 9C, the joining force is determined if the falling plate 202 is falling. It is determined to be "NO GOOD". When the joining force of the surface fastener according to Example 1 (first raw cloth A1 and second raw cloth B1) was evaluated by such a procedure, the joined state of FIG. 9B was maintained and “GOOD” was confirmed. A verdict was obtained.

[Evaluation procedure for washing wear resistance]
The hook-and-loop fastener was evaluated for wash-wear resistance (wash-wear resistance of the first and second raw cloths) by the following procedure. A stainless steel bottomed cylindrical rotary cylinder having a diameter of 15 cm and a height of 20 cm, one first raw cloth cut into a square of 10 cm×10 cm, and one second raw cloth cut into a square of 10 cm×10 cm. Then add 1 liter of water and close the lid. Then, the washing and abrasion resistance test is performed by rotating the rotary cylinder on a ball mill at a rotation speed of 1 rotation for 1 hour. The change in glossiness of the first raw cloth and the second raw cloth before and after the washing abrasion resistance test is measured.

In addition, the glossiness of the first raw cloth and the second raw cloth is measured by using a gloss meter (VG-1D manufactured by Nippon Denshoku Co., Ltd.) as a measuring device and setting the projection angle and the reception angle to 60°. To do. When the measured value of change in glossiness is 10% or less, it is determined as "GOOD", and when the measured value of change in glossiness exceeds 10%, it is determined as "NG (NO GOOD)". With respect to the surface fastener according to Example 1 (first raw cloth A1 and second raw cloth B1), when the laundry wear resistance was evaluated by such a procedure, the measured value of the change in glossiness was small, and A verdict was obtained.

In addition to the above-described Example 1, the applicant manufactured the surface fasteners of Examples 2 to 9 (specific examples of the surface fastener according to the present embodiment), which will be described later, and performed the same evaluation test on each of them. .. Hereinafter, the manufacturing method and the evaluation results according to Examples 2 to 9 will be described. The manufacturing method for each example and the outline of the evaluation results are as shown in the table of FIG.

<Example 2>
Instead of the first raw cloth A1 used in Example 1, a first raw cloth A2 having different pile yarn thickness and single yarn fineness shown in the table of FIG. 10 was produced, and the first raw cloth A2 and the second raw cloth were produced. The surface fastener of Example 2 which is a combination of B1 was obtained. That is, in Example 2, as the pile yarn for the first raw fabric, the false twisting process of the multifilament drawn yarn obtained by spinning and drawing polyester was performed to obtain 100T96fil (single yarn fineness: about 0.69T) untwisted yarn. A false twist crimped yarn was obtained. Other conditions regarding the production of the first raw cloth are the same as in the case of Example 1.

The combination of the first raw cloth A2 and the second raw cloth B1 (the same second raw cloth as in Example 1) thus obtained was used as the surface fastener of Example 2. When the above-described joining force and washing abrasion resistance were evaluated for this surface fastener, the judgment of "GOOD" was obtained for all of them.

<Example 3>
Instead of the first raw cloth A1 used in Example 1, a first raw cloth A3 having different pile yarn thickness and single yarn fineness shown in the table of FIG. 10 was produced, and the first raw cloth A3 and the second raw cloth were produced. A surface fastener of Example 3 which is a combination of B1 was obtained. That is, in Example 3, as the pile yarn for the first raw cloth, the false twisting process of the multifilament drawn yarn obtained by spinning and drawing polyester was carried out to obtain a 36T244fil (single yarn fineness: about 0.17T) untwisted yarn. A false twist crimped yarn was obtained. Other conditions regarding the production of the first raw cloth are the same as in the case of Example 1.

The combination of the first raw cloth A3 and the second raw cloth B1 (the same second raw cloth as in Example 1) thus obtained was used as the surface fastener of Example 3. When the above-described joining force and washing abrasion resistance were evaluated for this surface fastener, the judgment of "GOOD" was obtained for all of them.

<Example 4>
Instead of the second raw cloth B1 used in Example 1, a second raw cloth B2 having different pile yarn thickness and single yarn fineness shown in the table of FIG. 10 was produced, and the first raw cloth A1 and the second raw cloth were produced. The surface fastener of Example 4 which is a combination of B2 was obtained. That is, in Example 4, as the pile yarn for the second raw cloth, the false twisting process of the multifilament drawn yarn obtained by spinning and drawing polyester was performed, and 90T24fil (single yarn fineness: about 3.75T) untwisted. A false twist crimped yarn was obtained. Other conditions regarding the production of the second raw cloth are the same as in the case of Example 1.

The combination of the second raw cloth B2 and the first raw cloth A1 (the same first raw cloth as in Example 1) thus obtained was used as the surface fastener of Example 4. When the above-described joining force and washing abrasion resistance were evaluated for this surface fastener, the judgment of "GOOD" was obtained for all of them.

<Example 5>
Instead of the second raw fabric B1 used in Example 1, a second raw fabric B3 having different pile yarn thicknesses and single yarn finenesses shown in the table of FIG. 10 was produced to produce the first raw fabric A1 and the second raw fabric. A surface fastener of Example 5 which is a combination of B3 was obtained. That is, in Example 5, as the pile yarn for the second raw fabric, the false twisting process of the multifilament drawn yarn obtained by spinning and drawing polyester was performed, and 110T72fil (single yarn fineness: about 1.53T) untwisted. A false twist crimped yarn was obtained. Other conditions regarding the production of the second raw cloth are the same as in the case of Example 1.

The combination of the second raw cloth B3 and the first raw cloth A1 (the same first raw cloth as in Example 1) thus obtained was used as the surface fastener of Example 5. When the above-described joining force and washing abrasion resistance were evaluated for this surface fastener, the judgment of "GOOD" was obtained for all of them.

<Example 6>
Instead of the first raw cloth A1 used in Example 1, a first raw cloth A4 having a different false twist coefficient shown in the table of FIG. 10 was produced, and a combination of the first raw cloth A4 and the second raw cloth B1 was used. A surface fastener of Example 6 was obtained. That is, in Example 6, in the false twisting process of the multifilament drawn yarn for obtaining the pile yarn for the first raw fabric, the false twist coefficient was set to 20,000. Other conditions regarding the production of the first raw cloth are the same as in the case of Example 1.

The combination of the first raw cloth A4 and the second raw cloth B1 (the same second raw cloth as in Example 1) thus obtained was used as the surface fastener of Example 6. When the above-described joining force and washing abrasion resistance were evaluated for this surface fastener, the judgment of "GOOD" was obtained for all of them.

<Example 7>
Instead of the first raw cloth A1 used in Example 1, a first raw cloth A5 having a different false twist coefficient shown in the table of FIG. 10 was produced, and a combination of the first raw cloth A5 and the second raw cloth B1 was used. A surface fastener of Example 7 was obtained. That is, in Example 7, the false twist coefficient was set to 32,000 in the false twisting process of the multifilament drawn yarn for obtaining the pile yarn for the first raw fabric. Other conditions regarding the production of the first raw cloth are the same as in the case of Example 1.

The combination of the first raw cloth A5 and the second raw cloth B1 (the same second raw cloth as in Example 1) thus obtained was used as the surface fastener of Example 7. When the above-described joining force and washing abrasion resistance were evaluated for this surface fastener, the judgment of "GOOD" was obtained for all of them.

<Example 8>
Instead of the second raw fabric B1 used in Example 1, a second raw fabric B4 having a different false twist coefficient shown in the table of FIG. 10 was produced, and a combination of the first raw fabric A1 and the second raw fabric B4 was used. A surface fastener of Example 8 was obtained. That is, in Example 8, the false twist coefficient was set to 20,000 in the false twisting process of the multifilament drawn yarn for obtaining the pile yarn for the second raw fabric. Other conditions regarding the production of the second raw cloth are the same as in the case of Example 1.

The combination of the second raw cloth B4 and the first raw cloth A1 (the same first raw cloth as in Example 1) thus obtained was used as the surface fastener of Example 8. When the above-described joining force and washing abrasion resistance were evaluated for this surface fastener, the judgment of "GOOD" was obtained for all of them.

<Example 9>
Instead of the second raw cloth B1 used in Example 1, a second raw cloth B5 having different false twist coefficients shown in the table of FIG. 10 was produced, and the first raw cloth A1 and the second raw cloth B5 were combined. A surface fastener of Example 9 was obtained. That is, in Example 9, the false twist coefficient was set to 32,000 in the false twisting process of the multifilament drawn yarn for obtaining the pile yarn for the second raw fabric. Other conditions regarding the production of the second raw cloth are the same as in the case of Example 1.

The combination of the second raw cloth B5 and the first raw cloth A1 (the same first raw cloth as in Example 1) thus obtained was used as the surface fastener of Example 8. When the above-described joining force and washing abrasion resistance were evaluated for this surface fastener, the judgment of "GOOD" was obtained for all of them.

Further, the applicant manufactured the surface fasteners of Comparative Examples 1 to 5 described below in addition to the above-described examples, and performed the same evaluation test for each. Hereinafter, the manufacturing methods and the evaluation results according to Comparative Examples 1 to 5 will be described. The manufacturing method and the evaluation results of each comparative example are summarized in the table of FIG.

<Comparative Example 1>
Instead of the second raw cloth B1 of Example 1, the first raw cloth A1 of Example 1 was used to obtain a surface fastener of Comparative Example 1, which is a combination of the first raw cloth A1. That is, Comparative Example 1 has a surface fastener in which a loop fiber layer is arranged instead of the hook fiber layer of the present embodiment and the loop fiber layers are in contact with each other. When the above-described joining force and washing wear resistance were evaluated for this surface fastener, a "GOOD" judgment was obtained for the washing wear resistance, but "NG" (insufficient joining force) was found for the joining force. Was obtained.

<Comparative example 2>
Instead of the first raw cloth A1 of Example 1, the second raw cloth B1 of Example 1 was used to obtain a surface fastener of Comparative Example 2 which is a combination of the second raw cloth B1. That is, a hook-and-loop fastener is arranged in place of the loop fiber layer of the present embodiment, and a hook-and-loop fastener in which the hook fiber layers are in contact with each other is referred to as Comparative Example 2. When the above-mentioned joining force and washing abrasion resistance were evaluated for this surface fastener, a "GOOD" judgment was obtained for the washing abrasion resistance, but an "NG" (insufficient joining force) was obtained for the joining force. Was obtained.

<Comparative example 3>
Instead of the second raw cloth B1 used in Example 1, a second raw cloth B6 having different pile yarn thicknesses and single yarn finenesses shown in the table of FIG. 10 was produced to produce the first raw cloth A1 and the second raw cloth. A surface fastener of Comparative Example 3 which is a combination of B6 was obtained. That is, in Comparative Example 3, as the pile yarn for the second raw fabric, the false twisting process of the multifilament drawn yarn obtained by spinning and drawing polyester was performed, and 120 T18 fil (single yarn fineness: about 6.67 T) untwisted. A false twist crimped yarn was obtained. Other conditions regarding the production of the second raw cloth are the same as in the case of Example 1.

The combination of the second raw cloth B6 thus obtained and the first raw cloth A1 (the same first raw cloth as in Example 1) was used as the surface fastener of Comparative Example 3. When the above-described joining force and washing wear resistance were evaluated for this surface fastener, a "GOOD" judgment was obtained for the joining force, but a "NG" judgment was obtained for the washing wear resistance. It was

<Comparative example 4>
Instead of the first raw cloth A1 used in Example 1, a first raw cloth A6 which is not false twisted as shown in the table of FIG. 10 is manufactured, which is a combination of the first raw cloth A6 and the second raw cloth B1. The surface fastener of Comparative Example 4 was obtained. That is, in Comparative Example 4, the false twisting process was not performed on the multifilament drawn yarn for obtaining the pile yarn for the first raw cloth. Other conditions regarding the production of the first raw cloth are the same as in the case of Example 1.

The combination of the first raw cloth A6 thus obtained and the second raw cloth B1 (the same second raw cloth as in Example 1) was used as the surface fastener of Comparative Example 4. When the above-described joining force and washing wear resistance of the surface fastener were evaluated, a "GOOD" judgment was obtained for the washing wear resistance, but a "NG" judgment was obtained for the joining force. It was

<Comparative Example 5>
Instead of the second raw fabric B1 used in Example 1, a second raw fabric B7 which is not false-twisted as shown in the table of FIG. 10 is manufactured, which is a combination of the first raw fabric A1 and the second raw fabric B7. A surface fastener of Comparative Example 5 was obtained. That is, in Comparative Example 5, the false twisting process was not performed on the multifilament stretched yarn for obtaining the pile yarn for the second raw fabric. Other conditions regarding the production of the second raw cloth are the same as in the case of Example 1.

The combination of the second raw cloth B7 thus obtained and the first raw cloth A1 (the same first raw cloth as in Example 1) was used as the surface fastener of Comparative Example 5. When the above-described joining force and washing wear resistance of the surface fastener were evaluated, a "GOOD" judgment was obtained for the washing wear resistance, but a "NG" judgment was obtained for the joining force. It was

3. Others The surface fastener according to the present embodiment includes a first raw cloth having a loop fiber layer and a second raw cloth having a hook fiber layer. The loop fiber layer is composed of a plurality of loop fibers formed of the first false twist crimp pile yarn, and the hook fiber layer is formed of a plurality of hook fibers formed of the second false twist crimp pile yarn. It is composed of.

The first false twist crimp pile yarn is a bundle of polyester fibers (resin fibers) having a single yarn fineness of 0.15 dtex or more and 0.7 dtex or less, and is false twisted under the condition that the false twist coefficient is 20,000 to 32,000. It is a processed non-twisted false twist crimped pile yarn. The second false twist crimped pile yarn is a bundle of polyester fibers having a single yarn fineness of 1.5 dtex or more and 3.8 dtex or less, which is false twisted under the condition that the false twist coefficient is 20,000 to 32,000. It is a false false twist crimped pile yarn. The hook fiber is a loop formed by the second false twist crimp pile yarn, in which the vicinity of the apex is cut.

In the surface fastener according to the present embodiment, the first raw cloth and the second raw cloth are joined by the engagement of such loop fibers and hook fibers. The hook-and-loop fastener having such a configuration can suppress damage to the cloth, reduce damage to the cloth during washing, and obtain high bonding strength without using ultrafine fibers having a single fiber diameter of 1 μm or less. It is possible.

In the present embodiment, the loop fiber layer provided on the first raw fabric of the surface fastener is made of loop fibers made of polyester fiber having a single yarn fineness of 0.15 dtex or more and 0.7 dtex or less, and the first fiber of the surface fastener. The hook fiber layer provided on the second raw cloth is composed of hook fibers made of polyester fiber having a single yarn fineness of 1.5 dtex or more and 3.8 dtex or less. Therefore, it is possible to reduce the damage to the cloth during washing while suppressing the catching of the cloth. In this embodiment, polyester fibers are used as the resin fibers, but fibers of other resins may be used without departing from the spirit of the present invention.

Further, the loop fiber layer is composed of a plurality of loop fibers obtained from an untwisted false-twist crimped pile yarn obtained by false-twisting under the condition that the false-twist coefficient is 20,000 or more and 32,000 or less. Therefore, the force of adhering the adjacent loop fibers to each other is weak, and a gap is likely to occur. In addition, a plurality of hook fiber layers obtained by cutting the vicinity of the apex of a non-twisted false twist crimped pile yarn obtained by false twisting under the condition that the false twist coefficient is 20,000 or more and 32,000 or less. Since it is composed of the hook fibers, the tips of the adjacent hook fibers easily spread. As a result, the loosened hook fibers easily enter the gaps between the loop fibers, and a high joining force can be obtained. In addition, since the bedding covers 1 and 120 of the present embodiment use such a surface fastener, there is little catching of the cloth and damage to the cloth at the time of washing, and the joint surface is hard to come off.

In the method for manufacturing the surface fastener according to the present embodiment, a bundle of polyester fibers having a single yarn fineness of 0.15 dtex or more and 0.7 dtex or less is false twisted under the conditions of a false twist coefficient of 20,000 to 32,000. Thereby, a loop fiber layer is formed by forming a plurality of loop fibers using the first step of obtaining a first false-twist crimped pile yarn without twisting, and forming a plurality of loop fibers using the first false-twist crimped pile yarn. In the second step, a bundle of polyester fibers having a single yarn fineness of 1.5 dtex or more and 3.8 dtex or less is subjected to false twisting under the condition that the false twist coefficient is 20,000 to 32,000. And a fourth step of forming a hook fiber layer by forming a plurality of hook fibers using the second false twist crimp pile yarn. In the fourth step, hook fibers are formed by cutting the vicinity of the apex of the loop formed by the second false twist crimp pile yarn. Therefore, the hook fibers can be formed relatively easily.

Although the embodiment of the present invention has been described above, the configuration of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention. That is, it should be considered that the above-described embodiments are illustrative in all points and not restrictive. It is understood that the technical scope of the present invention is shown not by the above description of the embodiments but by the scope of the claims, and includes all modifications equivalent to the scope of the claims and within the scope. Should be.

INDUSTRIAL APPLICATION This invention can be utilized for the surface fastener used for a bedding cover etc.

1 Bedding cover (mattress cover)
2 Inner cover 3 Outer cover 10 Mattress 21 Top fabric 22 Main body 22a-22d Side fabric 22e Bottom fabric 23a, 23b Open/close fastener 31 Outer shell upper fabric 32a-32d Outer shell side fabric 40 First raw cloth ground thread 41 First Raw pile pile yarn 50 Second raw fabric ground yarn 51 Second raw fabric pile yarn 100 Pillow 110 Cushion 120 Bedding cover (pillow cover)
121 Pillow top cloth 122 First end cloth 123 Second end cloth 200 Bonding force measuring device LP First raw cloth LP1 First raw cloth ground layer LP2 Loop fiber layer CP Second raw cloth CP1 Second raw cloth ground Layer CP2 Hook fiber layer

Claims (5)

A surface fastener having a first raw cloth having a loop fiber layer and a second raw cloth having a hook fiber layer,
The loop fiber layer is composed of a plurality of loop fibers formed of a first false twist crimp pile yarn,
The hook fiber layer is composed of a plurality of hook fibers formed of a second false twist crimp pile yarn,
The first false twist crimped pile yarn is a bundle of resin fibers having a single yarn fineness of 0.15 dtex or more and 0.7 dtex or less, which is false twisted under the condition that the false twist coefficient is 20,000 to 32,000. It is a false twist crimped pile yarn,
The second false twist crimp pile yarn is a bundle of resin fibers having a single yarn fineness of 1.5 dtex or more and 3.8 dtex or less, which is false twisted under the condition that the false twist coefficient is 20,000 to 32,000. It is a false twist crimped pile yarn,
A hook-and-loop fastener, wherein the first raw cloth and the second raw cloth are joined by engaging the loop fiber and the hook fiber. The first false twist crimped pile yarn and the second false twist crimped pile yarn are non-twisted false twist crimped pile yarns obtained by false twisting a bundle of polyester fibers,
2. The hook-and-loop fastener according to claim 1, wherein the hook fiber is a loop formed by the second false twist crimp pile yarn, in which the vicinity of the apex of the loop is cut. A bedding cover having the surface fastener according to claim 1 or 2, an inner cover fixed to an outer peripheral surface of the bedding, and an outer cover,
One of the inner cover and the outer cover is provided with a first raw cloth of the surface fastener, and the other is provided with a second raw cloth of the surface fastener.
The bedding cover, wherein the outer cover is fixed to the upper surface of the inner cover by joining the first raw cloth and the second raw cloth. A bedding cover wrapped around the outer surface of the bedding,
The first raw cloth and the second raw cloth of the surface fastener according to claim 1 or 2 are provided so as to face each other in the wound state.
A bedding cover characterized in that the first raw cloth and the second raw cloth are joined together to be fixed in the wound state. A method for manufacturing a surface fastener having a first raw cloth having a loop fiber layer and a second raw cloth having a hook fiber layer,
A first false-twist crimp without twisting is performed by false-twisting a bundle of resin fibers having a single yarn fineness of 0.15 dtex or more and 0.7 dtex or less under the condition of a false twist coefficient of 20,000 to 32,000. A first step of obtaining a pile yarn,
A second step of forming the loop fiber layer by forming a plurality of loop fibers using the first false twist crimp pile yarn;
A second false-twist crimp without twisting is performed by false-twisting a bundle of resin fibers having a single yarn fineness of 1.5 dtex or more and 3.8 dtex or less under the conditions of a false twist coefficient of 20,000 to 32,000. The third step of obtaining the pile yarn,
A fourth step of forming the hook fiber layer by forming a plurality of hook fibers by using a second false twist crimp pile yarn,
In the fourth step, the hook fiber is formed by cutting the vicinity of the apex of the loop formed by the second false twist crimp pile yarn.