JP7270396B2 - Velcro and bedding cover - Google Patents

Description

The present invention relates to a hook-and-loop fastener and a bedding cover using the same.

2. Description of the Related Art Conventionally, a bedding cover has been proposed in which upper and lower covers and the like can be joined using fasteners. For example, Patent Literature 1 discloses a bedding cover in which fasteners are provided on the outer edge of the upper cover and the outer edge of the lower cover so that the upper cover and the lower cover can be joined with fasteners.

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

On the other hand, in Patent Document 3, a raw cloth a having a knitted structure with a single fiber diameter of 700 nm (single yarn fineness: about 0.005 dtex) and a single yarn fiber fineness that has been shirred (cut the tip of the pile yarn) disclosed is a hook-and-loop fastener made of a napped raw cloth b composed of a napped portion having a diameter of 4.5 dtex (diameter: about 20.4 μm) and a ground texture portion.

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

However, if a hook-and-loop fastener having a conventional rigid hook-shaped protrusion is used as the fastener tape used for the bedding cover described in Patent Document 2, the bedding cover will not be able to be washed when the bedding cover is washed using a washing machine. There was a problem that the fabric was easily damaged (easily fuzzed).

On the other hand, in the hook-and-loop fastener described in Patent Document 3, since ultrafine fibers with a single fiber diameter of 1 μm or less are used, there is a problem that the fibers are easily cut and fuzzy. In addition, since the hook-and-loop fastener has high frictional resistance, the fabric is easily caught, and in the bedding cover using this, wrinkles are likely to occur when the bedding cover is set on the bedding, so the bedding cover can be set smoothly. There was a problem that it was difficult to

In view of the above problems, the present invention provides a hook-and-loop fastener that can reduce the damage of the fabric during washing while suppressing the fabric from being caught, and can obtain a high joining force, a method for manufacturing the same, and a bedding cover using the same. intended 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 has a first false twist crimp. The hook fiber layer is composed of a plurality of loop fibers formed of pile yarn, and the hook fiber layer is composed of a plurality of hook fibers formed of a second false twist crimped pile yarn, and the first false twist 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 condition of a false twist coefficient of 20,000 to 32,000. It is a crimped pile yarn, and the second false twisted crimped 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 under the condition of a false twist coefficient of 20,000 to 32,000. It is a non-twisted false-twisted crimped pile yarn that has undergone a false twisting process, and has a configuration in which the first raw cloth and the second raw cloth are joined by engaging the loop fibers and the hook fibers.

According to this configuration, it is possible to reduce damage to the fabric during washing while suppressing the fabric from being caught, and to obtain a high bonding strength. More specifically, the first false-twisted crimped pile yarn and the second false-twisted crimped pile yarn are non-twisted false-twisted crimped pile yarns obtained by false-twisting bundles of polyester fibers. and the hook fibers may be obtained by cutting the vicinities of the vertexes of the loops formed by the second false twisted crimped pile yarns.

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

Further, the bedding cover according to the present invention is a bedding cover that is wound around the outer peripheral surface of bedding, wherein the first raw cloth and the second raw cloth of the hook-and-loop fastener having the above configuration are provided so as to face each other in the wound state. By joining the first raw cloth and the second raw cloth, it is fixed in the wound state. According to this configuration, it is possible to enjoy the advantages of the hook-and-loop fastener having the above configuration.

Further, the manufacturing method according to the present invention is a method for manufacturing a hook-and-loop fastener having a first raw cloth having a loop fiber layer and a second raw cloth having a hook fiber layer, wherein the single yarn fineness is 0.15 dtex or more and 0.15 dtex or more. A first step of obtaining an untwisted first false-twisted crimped pile yarn by false-twisting a bundle of resin fibers of 7 dtex or less under conditions of a false-twisting coefficient of 20,000 to 32,000; a second step of forming the loop fiber layer by forming a plurality of loop fibers using one false twisted crimped pile yarn; is subjected to false twisting under the condition that the false twist coefficient is 20,000 to 32,000 to obtain a second false twisted crimped pile yarn without twisting, and the second false twisted crimped pile and a fourth step of forming the hook fiber layer by forming a plurality of hook fibers using a yarn, wherein the apex of the loop formed by the second false twisted crimped pile yarn in the fourth step. The method is such that the hook fibers are formed by cutting the vicinity thereof.

According to the hook-and-loop fastener of the present invention, it is possible to reduce damage to the fabric during washing while suppressing catching of the fabric, and to obtain high bonding strength. Further, according to the bedding cover according to the present invention, it is possible to enjoy the advantages of the hook-and-loop fastener according to the present invention. Moreover, according to the manufacturing method of the present invention, it is possible to manufacture the hook-and-loop fastener of the present invention.

It is a perspective view of the bedding cover (mattress cover) which concerns on this embodiment. It is the perspective view by the other viewpoint of the said bedding cover. FIG. 4 is an explanatory diagram relating to an inner cover according to the embodiment; Fig. 2 is a perspective view of the inner cover with the mattress accommodated; It is a perspective view of the outer cover which concerns on this embodiment. FIG. 4 is an explanatory diagram of characteristic shapes of fibers of pile yarns of the first raw cloth; FIG. 10 is an explanatory diagram relating to a knitting method of ground yarns related to the first raw cloth; FIG. 4 is an explanatory diagram of a knitting method of pile yarns for the first unwoven cloth. FIG. 10 is an explanatory diagram of characteristic shapes of fibers of pile yarns of the second raw cloth; FIG. 10 is an explanatory diagram relating to a knitting method of ground yarns related to the second raw cloth; FIG. 10 is an explanatory diagram relating to a knitting method of ground yarns related to the second raw cloth; It is a cross-sectional photograph of the first raw cloth and the second raw cloth in a joined state. It is a cross-sectional photograph of the portion of the first raw cloth. It is a cross-sectional photograph of the portion of the second raw cloth. 1 is a perspective view of a pillow using the bedding cover (pillow cover) according to this embodiment. FIG. It is a perspective view of the said 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. 1 is a table relating to manufacturing methods and evaluation results for each example and each comparative example.

Embodiments of the present invention will be described below with reference to the drawings. In the following description, vertical, horizontal, and front/rear directions (directions orthogonal to each other) are as shown in the respective drawings. These directions are merely defined for convenience in order to facilitate understanding of the following description.

1. Structure of Velcro 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 viewed from another angle. The bedding cover 1 includes an inner cover 2 in which a rectangular parallelepiped mattress 10 (see FIG. 2) is accommodated, and an outer cover 3 fixed to the upper surface thereof. 1A and 1B show the bedding cover 1 with the mattress 10 accommodated therein.

FIG. 2 shows how the cushion 10 can be put in and taken out of the inner cover 2. As shown in FIG. 3 is a perspective view of the inner cover 2 with the mattress 10 accommodated therein. The inner cover 2 has an upper fabric 21 and a body portion 22 . The body part 22 has a left side fabric 22a, a rear side fabric 22b, a right side fabric 22c, a front side fabric 22d, and a bottom fabric 22e. It can be put in and taken out freely.

The size of the inner cover 2 is set to fit the mattress 10, and when the mattress 10 is accommodated in the body part 22 and the opening of the body part 22 is closed with the upper fabric 21, the entire mattress 10 is covered with the inner cover 2. It will be covered without excess or deficiency. In this state, the upper surface fabric 21 covers the upper surface of the mattress 10, the left side fabric 22a covers the left surface of the mattress 10, the rear side fabric 22b covers the rear surface of the mattress 10, and the right side fabric 22c covers the right surface of the mattress 10. , the front side fabric 22d covers the front surface of the mattress 10, and the bottom fabric 22e covers the bottom surface of the mattress 10, respectively.

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

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

Among the fabrics of the inner cover 2, the double raschel fabric is used for the top fabric 21 and the bottom fabric 22e. On the other hand, for the front, rear, left, and right side fabrics 22a to 22d, a first raw fabric, which will be described later, is adopted.

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

The outer cover 3 is arranged so that the outer shell upper surface fabric 31 is superimposed on the upper surface fabric 21, and the outer shell side fabrics 32a to 32d bent 90 degrees from the outer shell upper surface fabric 31 are attached to the respective side fabrics of the inner cover 2. It can be attached to the inner cover 2 by joining to 22a to 22d. The positions of the folding lines corresponding to the boundaries between the outer shell upper surface material 31 and the outer shell side surface materials 32a to 32d generally coincide with the positions of the outer edges of the upper surface material 21. As shown in FIG.

A first raw fabric is used for each side fabric 22a to 22d of the inner cover 2, and a loop fiber layer, which will be described later, is formed on the front side (the side in contact with the outer cover 3). A second raw fabric is used for each of the outer shell side 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 hook-and-loop fasteners that are joined by the engagement of loop fibers and hook fibers. Attaching the bedding cover 1 to the mattress 10 is completed by attaching the outer cover 3 to the inner cover 2 containing the mattress 10 in advance in this way.

In the bedding cover 1 in this state, as shown in FIGS. 1A and 1B, the side surface fabrics 22a to 22d bent at 90° with respect to the upper surface fabric 21 of the inner cover 2 correspond to the outer shell upper surface fabric of the outer cover 3. It is joined to each outer shell side material 32a to 32d bent at 90° with respect to 31. As shown in FIG. As a result, even if tension is generated in the outer shell upper surface fabric 31 of the outer cover 3 due to the user rolling over, the outer shell side fabrics 32a to 32d are less likely to separate from the inner cover 2. It is possible to prevent slipping down and occurrence of wrinkles due to slight slippage.

Each of the outer shell side surface fabrics 32a to 32d has a trapezoidal shape with the side connected to the outer shell upper surface fabric 31 as the lower base. In addition, 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 material 22a to 22d of the inner cover 2. It's getting smaller. As a result, each of the folded outer shell side materials 32a-32d is reliably accommodated within the range of each of the side surfaces 22a-22d.

However, the shape of the outer shell side fabrics 32a to 32d is not particularly limited, and may be rectangular or arc-shaped, for example. In the present embodiment, the bag-shaped inner cover 2 that completely covers the mattress 10 is exemplified, but the inner cover 2 may have openings on the top surface, side surfaces, or part of the bottom surface. Furthermore, in the present embodiment, the outer cover 3 has a planar shape without three-dimensional corners, but it may be a semi-bag shape with three-dimensional corners or curved surfaces. . Moreover, the first raw cloth used for the inner cover 2 and the second raw cloth used for the outer cover 3 may be used for the entire side surface of the bedding cover 1, or may be used for only a part of the side surface.

As described above, the bedding cover 1 has the hook-and-loop 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. One of the outer cover 2 and the outer cover 3 is provided with a first raw cloth, and the other is provided with a second raw cloth. 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 each side cloth 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 yarns 41 forming the loop fiber layer LP2 of the first raw cloth LP. FIG. 5B schematically shows how to knit the ground yarns 40 forming the ground layer to which the pile yarns 41 are fixed. FIG. 5C schematically shows how the pile yarns 41 are knitted with respect to the ground yarns 40 . The first unwoven fabric LP is composed of a ground layer LP1 that forms the main body of the fabric that extends two-dimensionally, and a loop fiber layer LP2 that includes a plurality of loops extending vertically from the ground layer LP1.

In this embodiment, the first raw cloth LP is knitted by a circular knitting machine using ground yarns 40 and pile yarns 41 . The ground layer LP1 is formed by ground yarns 40, and the loop fiber layer LP2 is formed by pile yarns 41. As shown in FIG. 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 by sequentially locking the second and third rows. A planar ground layer LP1 is formed.

Further, as shown in FIG. 5C, the pile yarns 41 are woven together with the ground yarns 40, and apart from the loops formed by the ground yarns 40, a plurality of loop fibers (loop-like engaging elements) consisting of only the pile yarns 41 are formed. ). Thereby, a loop fiber layer LP2 extending vertically from the planar ground layer LP1 is formed.

Next, the second raw cloth (hereinafter sometimes referred to as "second raw cloth CP") used for each of the outer shell side cloths 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 cut pile yarn 51 that constitutes the hook fiber layer CP2 of the second raw cloth CP. FIG. 6B schematically shows how to knit the ground yarns 50 forming the ground layer to which the pile yarns 51 are fixed. FIG. 6C schematically shows how the pile yarns 51 are knitted with respect to the ground yarns 50 .

The pile yarn 51 forms a plurality of hook fibers (hook-shaped engaging elements) by cutting near the vertex. The second raw cloth CP is composed of a ground layer CP1 that forms the main body of the fabric that spreads two-dimensionally, and a hook fiber layer CP2 that is made up of a plurality of fibers extending vertically from the ground layer CP1.

In this embodiment, the second fabric CP is knitted by a circular knitting machine using ground yarns 50 and pile yarns 51 . The ground layer CP<b>1 is formed by ground yarn 50 and the hook fiber layer CP<b>2 is formed by 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 by sequentially locking the second and third rows. A planar ground layer CP1 is formed.

Further, as shown in FIG. 6C, the pile yarns 51 are woven together with the ground yarns 50 to form a loop consisting of the pile yarns 51 alone, separate from the loops formed by the ground yarns 50 . This loop forms a hook fiber (hook-shaped engaging element) by being cut near the vertex, and a hook fiber layer CP2 extending vertically from the planar ground layer CP1 is formed.

FIG. 7A shows cross-sectional photographs of the first raw cloth LP and the second raw cloth CP in the hook-and-loop fastener in which the loop fiber layer LP2 and the hook fiber layer CP2 are joined. Also, 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. Regarding the hook-and-loop fastener shown in FIG. 7A, the area generally indicated by X1 is the ground layer LP1 of the first raw cloth LP, and the area generally indicated by X2 is the loop fiber layer LP2. Further, 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 bonded state, a plurality of loop fibers (loop-shaped engaging elements) forming the loop fiber layer LP2 are assembled in a loosely loosened state, and the hook fiber layer CP2 is formed in the gap between them. A plurality of random helical hook fibers (hook-shaped engaging elements) that constitute it enter at various angles. By engaging multiple hook fibers with multiple loop fibers at various angles, it is possible to not only increase friction in the horizontal direction, but also obtain moderate bond strength in the vertical direction.

In order to obtain an appropriate bonding force even in the vertical direction, the plurality of loop fibers forming the loop fiber layer LP2 should be loosely unraveled, and the tips of the plurality of hook fibers forming the hook fiber layer CP2 should be It is required to protrude at various angles.

In order to satisfy this requirement, the pile yarn forming the loop fiber layer LP2 is a bundle of polyester fibers having a single yarn fineness of 0.15 dtex or more and 0.7 dtex or less, and is false twisted at a false twist coefficient of 20,000 to 32,000. It is considered processed. If the single filament fineness is less than 0.15 dtex, the fibers are likely to be cut, and thus become fuzzy due to friction. On the other hand, if the fineness exceeds 0.7 dtex, the elasticity of the loop fibers becomes too large, making it difficult for the hook fibers to enter the gaps between the loop fibers.

If the false twist coefficient is less than 20,000, the false twisted crimped yarn cannot be sufficiently crimped, and the loop fibers become difficult to unravel and become difficult to engage with the hook fibers. On the other hand, if the false twist coefficient exceeds 32,000, the strength of the false twisted crimped yarn is reduced, or the gaps between the loop fibers are too wide, resulting in a decrease in the frictional force (holding force) with the hook fibers. In the present application, the value of the false twist coefficient K is calculated using Equation 1 below.
(Formula 1) K = T x D ^0.5
However, T indicates the number of false twists (twists/m), and D indicates the fineness (dtex).

As the false twisting method, basically any method such as a pin type, a friction disk type, a nip belt type, an air twisting type, etc., which are generally used, may be adopted. If the false twisting temperature (heat setting temperature) is less than 180°C, sufficient crimping cannot be obtained. Further, the false twist draw ratio is preferably 1.2 to 1.8.

If the height of the loop fibers forming the loop fiber layer LP2 is less than 1 mm, it becomes difficult to engage with the hook fibers. is preferred. Although the fineness of the pile yarns 41 is not particularly limited, it is preferably about the same as the fineness of the ground yarns, such as 40 dtex or more and 120 dtex or less.

In addition, in order to satisfy 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 with a false twist coefficient of 20,000 to 32,000. Twisted. If the single filament fineness is less than 1.5 dtex, the elasticity of the hook fibers is small, making it difficult to maintain the hook shape and 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 fabric becomes too rigid, and the fabric tends to be damaged during washing, and the fabric tends to tingle when rubbed against the skin.

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

As the false twisting method, basically any method such as a pin type, a friction disk type, a nip belt type, an air twisting type, etc., which are generally used, may be adopted. If the false twisting temperature (heat setting temperature) is less than 180°C, sufficient crimping cannot be obtained. Further, 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 becomes difficult to engage with the hook fibers. It is preferably 2 mm or less. The ratio of the hook fiber height to the loop fiber height is preferably 0.3 or more and 0.8 or less.

Although the fineness of the pile yarns 51 is not particularly limited, it is preferably about the same as the fineness of the ground yarns, for example, 40 dtex or more and 120 dtex or less. In this embodiment, the first raw cloth is used for the inner cover 2 and the second raw cloth is used for the outer cover 3. Instead, the second raw cloth is used for the inner cover 2 and the outer A first raw cloth may be used for the cover 3 .

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

In a mattress cover for a double bed, which has approximately the same length in the height direction and the width direction, it is conceivable that the outer cover is installed in the wrong direction (with a 90-degree shift). However, even in such a case, if this configuration is adopted, sufficient bonding strength cannot be obtained between the first raw cloths of the inner cover and the outer cover, or between the second raw cloths, so the user may be asked to attach the cover in the wrong direction. It becomes easier to notice that

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

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

The bedding cover 120 is a substantially rectangular planar pillow cover that is wrapped around and fixed to the outer peripheral surface of the substantially rectangular parallelepiped cushion 110, and includes a pillow surface fabric 121, a first end fabric 122, and a second end fabric 123. have The first end fabric 122 is connected to one longitudinal end of the pillow top fabric 121 , and the second end fabric 123 is linked to the other longitudinal end of the pillow top fabric 121 .

The pillow surface fabric 121 is made of a knitted fabric, the first end fabric 122 is made of a first raw fabric having a loop fiber layer on its surface, and the second end fabric 123 is made of a second raw fabric having a hook fiber layer on its back. It is made of cloth. When the bedding cover 120 is wrapped around the outer peripheral surface of the cushion 110, the surface of the first end material 122 and the back surface of the second end material 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 make the bedding A cover 120 is fixed to the outer peripheral surface of the cushion 110 .

In this manner, the first end fabric 122 and the second end fabric 123 are joined at a position bent by approximately 180° with respect to the pillow top fabric 121 . As a result, even if tension is generated in the pillow surface fabric 121 of the bedding cover 120 due to the user turning over, the first end fabric 122 and the second end fabric 123 are less likely to separate, and the bedding cover 120 slides down. It is possible to prevent the occurrence of wrinkles. In the bedding cover 120, the first end cloth 122 is composed only of the first raw cloth, and the second end cloth 123 is composed only of the second raw cloth. One or both of the two end cloths 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). By joining the raw cloth and the second raw cloth, it is fixed in the wound state.

2. Evaluation of hook-and-loop fastener In order to evaluate the performance of the hook-and-loop fastener according to this embodiment (the hook-and-loop fastener made by combining the first raw cloth and the second raw cloth), the applicant manufactured and evaluated the hook-and-loop fastener of Example 1. did the test. A manufacturing method and an evaluation test according to Example 1 will be described in detail below.

[Manufacturing method according to Example 1]
As the pile yarn for the first raw fabric, a multifilament drawn yarn obtained by spinning and drawing polyester is subjected to false twisting, and a non-twisted false twisted crimped yarn of 84T288fil (single yarn fineness: about 0.29T) is obtained. Obtained. This false twisting 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 set temperature) of 210°C.

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

On the other hand, as the pile yarn for the second raw cloth, a multifilament drawn yarn obtained by spinning and drawing polyester is subjected to false twisting, and a non-twisted false twist crimp of 110T36fil (single yarn fineness: about 3.06T). got the yarn This false twisting 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 set temperature) of 210°C.

A multifilament yarn 84T288fil made of polyester fibers having a twist number of 800 t/m obtained by spinning and drawing polyester was used as the ground yarn for the second raw fabric. These pile yarns and ground yarns were knitted by a circular knitting machine to produce a raw cloth having a pile length of 1 mm, and then shirred to produce a second raw cloth B1 having a cut height of 0.6 mm.

The hook-and-loop fastener of the first raw cloth A1 and the second raw cloth B1 manufactured as described above was used as the hook-and-loop fastener of Example 1. In addition, the hook-and-loop fastener was evaluated for bonding strength and washing abrasion resistance as follows.

[Evaluation Procedure for Joining Force]
The joining force of the hook-and-loop fastener was evaluated by the following procedure using a joining force measuring device. 9A to 9C show how to evaluate the bonding strength of two cloths (first raw cloth and second raw cloth). 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 square horizontal surface, and a pillar 201c fixing these horizontal plates 201a and 201b. The bonding force measuring device 200 can be rotated upside down while maintaining the parallel state of the horizontal plates 201a and 201b.

The first horizontal plate 201a and the second horizontal plate 201b are aluminum members having a rectangular parallelepiped shape with a square horizontal surface of 15 cm on each side. The column 201c is made of a cylindrical aluminum member with a length of 15 cm, and holds the first horizontal plate 201a and the second horizontal plate 201b in parallel with an interval of 30 cm. The drop plate 202 is formed of a 1 mm thick acrylic plate having a square surface with a side of 10 cm. As the material of the drop plate 202, a plate such as cork material or 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.

Evaluation using the bonding force measuring device 200 is performed by the following method. Two pieces of dough are pre-cut into squares of 10 cm x 10 cm each. Then, as shown in FIG. 9A, one of the two superimposed fabrics is fixed to the first horizontal plate 201a with double-sided tape, and the other is fixed to the drop plate 202 with double-sided tape. At this time, a weight (not shown) is placed on the back side of the drop plate 202 (opposite side of the fabric) so that the total weight of the fabric fixed to the drop plate 202 is 18 g. Stick it on and adjust the weight. In the state shown in FIG. 9A, a weight of 100 g is placed on the drop plate 202 for 30 seconds to join the two fabrics.

After that, as shown in FIG. 9B, the bonding force is evaluated by turning the pedestal 201 upside down. If the state of FIG. 9B is maintained one minute after the reversal, the bonding strength is determined to be "GOOD", and as shown in FIG. "NO GOOD" is determined. When the bonding strength of the hook-and-loop fastener according to Example 1 (the first raw cloth A1 and the second raw cloth B1) was evaluated according to the procedure described above, the bonding state shown in FIG. verdict was obtained.

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

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 light projection angle and the light reception angle to 60 °. do. If the measured value of change in glossiness is 10% or less, it is judged as "GOOD", and if the measured value of change in glossiness exceeds 10%, it is judged as "NG (NO GOOD)". When the hook-and-loop fastener according to Example 1 (the first raw cloth A1 and the second raw cloth B1) was evaluated for washing abrasion resistance by the above procedure, the measured value of change in glossiness was small and the value was "GOOD". verdict was obtained.

In addition to Example 1 described above, the applicant manufactured hook-and-loop fasteners of Examples 2 to 9 (specific examples of hook-and-loop fasteners according to the present embodiment) to be described later, and conducted similar evaluation tests on each of them. . Manufacturing methods and evaluation results according to Examples 2 to 9 will be described below. A summary of the manufacturing method and evaluation results for each example is 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 A hook-and-loop 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, a multifilament drawn yarn obtained by spinning and drawing polyester was false twisted, and a non-twisted yarn of 100T96fil (single yarn fineness: about 0.69T) was applied. A false-twisted crimped yarn was obtained. The other conditions for manufacturing the first raw fabric are the same as in Example 1.

A combination of the first raw cloth A2 thus obtained and the second raw cloth B1 (the same second raw cloth as in Example 1) was used as the hook-and-loop fastener of Example 2. When this hook-and-loop fastener was evaluated for bonding strength and washing wear resistance as described above, it was judged as "GOOD" for both.

<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 A hook-and-loop 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, a multifilament drawn yarn obtained by spinning and drawing polyester was false twisted, and a non-twisted yarn of 36T244fil (single yarn fineness: about 0.17T) was applied. A false-twisted crimped yarn was obtained. The other conditions for manufacturing the first raw fabric are the same as in Example 1.

A combination of the first raw cloth A3 thus obtained and the second raw cloth B1 (the same second raw cloth as in Example 1) was used as the hook-and-loop fastener of Example 3. When this hook-and-loop fastener was evaluated for bonding strength and washing wear resistance as described above, it was judged as "GOOD" for both.

<Example 4>
Instead of the second raw cloth B1 used in Example 1, a second raw cloth B2 having a 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 A hook-and-loop 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 fabric, a multifilament drawn yarn obtained by spinning and drawing polyester was false twisted, and a non-twisted yarn of 90T24fil (single yarn fineness: about 3.75T) was applied. A false-twisted crimped yarn was obtained. Other conditions for manufacturing the second raw fabric are the same as in the first embodiment.

A combination of the second raw cloth B2 thus obtained and the first raw cloth A1 (the same first raw cloth as in Example 1) was used as the hook-and-loop fastener of Example 4. When this hook-and-loop fastener was evaluated for bonding strength and washing wear resistance as described above, it was judged as "GOOD" for both.

<Example 5>
Instead of the second raw cloth B1 used in Example 1, a second raw cloth B3 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 A hook-and-loop 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 cloth, a multifilament drawn yarn obtained by spinning and drawing polyester was false twisted, and a non-twisted yarn of 110T72fil (single yarn fineness: about 1.53T) was applied. A false-twisted crimped yarn was obtained. Other conditions for manufacturing the second raw fabric are the same as in the first embodiment.

A combination of the second raw cloth B3 thus obtained and the first raw cloth A1 (the same first raw cloth as in Example 1) was used as the hook-and-loop fastener of Example 5. When this hook-and-loop fastener was evaluated for bonding strength and washing wear resistance as described above, it was judged as "GOOD" for both.

<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. A surface fastener of Example 6 was obtained. That is, in Example 6, the false twist coefficient was set to 20,000 in the false twisting of the drawn multifilament yarn for obtaining the pile yarn of the first green cloth. The other conditions for manufacturing the first raw fabric are the same as in Example 1.

A 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 hook-and-loop fastener of Example 6. When this hook-and-loop fastener was evaluated for bonding strength and washing wear resistance as described above, it was judged as "GOOD" for both.

<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. 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 of the drawn multifilament yarn for obtaining the pile yarn of the first raw fabric. The other conditions for manufacturing the first raw fabric are the same as in Example 1.

A combination of the first raw cloth A5 thus obtained and the second raw cloth B1 (the same second raw cloth as in Example 1) was used as the hook-and-loop fastener of Example 7. When this hook-and-loop fastener was evaluated for bonding strength and washing wear resistance as described above, it was judged as "GOOD" for both.

<Example 8>
Instead of the second raw cloth B1 used in Example 1, a second raw cloth B4 having a different false twist coefficient shown in the table of FIG. 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 of the drawn multifilament yarn for obtaining the pile yarn of the second green cloth. Other conditions for manufacturing the second raw fabric are the same as in the first embodiment.

A combination of the second raw cloth B4 thus obtained and the first raw cloth A1 (the same first raw cloth as in Example 1) was used as the hook-and-loop fastener of Example 8. When this hook-and-loop fastener was evaluated for bonding strength and washing wear resistance as described above, it was judged as "GOOD" for both.

<Example 9>
Instead of the second raw cloth B1 used in Example 1, a second raw cloth B5 having a different false twist coefficient shown in the table of FIG. 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 twist processing of the drawn multifilament yarn for obtaining the pile yarn for the second green fabric. Other conditions for manufacturing the second raw fabric are the same as in the first embodiment.

A combination of the second raw cloth B5 thus obtained and the first raw cloth A1 (the same first raw cloth as in Example 1) was used as the hook-and-loop fastener of Example 8. When this hook-and-loop fastener was evaluated for bonding strength and washing wear resistance as described above, it was judged as "GOOD" for both.

Furthermore, the applicant manufactured hook-and-loop fasteners of Comparative Examples 1 to 5, which will be described later, in addition to each of the examples described above, and conducted similar evaluation tests on each of them. Manufacturing methods and evaluation results according to Comparative Examples 1 to 5 will be described below. A summary of the manufacturing method and evaluation results for each comparative example is as shown in the table of FIG.

<Comparative Example 1>
Using the first raw cloth A1 of Example 1 instead of the second raw cloth B1 of Example 1, a hook-and-loop fastener of Comparative Example 1, which is a combination of the first raw cloths A1, was obtained. That is, Comparative Example 1 was a hook-and-loop fastener in which a loop fiber layer was arranged instead of the hook fiber layer of the present embodiment, and the loop fiber layers were in contact with each other. When this hook-and-loop fastener was evaluated for the above-mentioned bonding strength and washing wear resistance, it was determined that the washing resistance was "GOOD", but the bonding strength was "NG" (insufficient bonding strength). judgment was obtained.

<Comparative Example 2>
Using the second raw cloth B1 of Example 1 instead of the first raw cloth A1 of Example 1, a hook-and-loop fastener of Comparative Example 2, which is a combination of the second raw cloths B1, was obtained. That is, Comparative Example 2 was a hook-and-loop fastener in which a hook fiber layer was arranged instead of the loop fiber layer of the present embodiment, and the hook fiber layers were in contact with each other. When this hook-and-loop fastener was evaluated for the above-mentioned bonding strength and washing wear resistance, it was determined that the washing resistance was "GOOD", but the bonding strength was "NG" (insufficient bonding strength). judgment 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 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 A hook-and-loop 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 cloth, a multifilament drawn yarn obtained by spinning and drawing polyester was false twisted, and a non-twisted yarn of 120T18fil (single yarn fineness: about 6.67T) was applied. A false-twisted crimped yarn was obtained. Other conditions for manufacturing the second raw fabric are the same as in the first embodiment.

A 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 a hook-and-loop fastener of Comparative Example 3. When this hook-and-loop fastener was evaluated for bonding strength and washing wear resistance as described above, the bonding strength was evaluated as "GOOD", but the washing resistance was evaluated as "NG". rice field.

<Comparative Example 4>
Instead of the first raw cloth A1 used in Example 1, a first raw cloth A6 not subjected to false twisting shown in the table of FIG. A hook-and-loop fastener of Comparative Example 4 was obtained. That is, in Comparative Example 4, the multifilament drawn yarn for obtaining the pile yarn of the first raw fabric was not subjected to false twisting. The other conditions for manufacturing the first raw fabric are the same as in Example 1.

A combination of the first raw cloth A6 and the second raw cloth B1 (the same second raw cloth as in Example 1) thus obtained was used as a hook-and-loop fastener of Comparative Example 4. When this hook-and-loop fastener was evaluated for bonding strength and washing abrasion resistance as described above, the washing resistance was evaluated as "GOOD", but the bonding strength was evaluated as "NG". rice field.

<Comparative Example 5>
Instead of the second raw cloth B1 used in Example 1, a second raw cloth B7 not subjected to false twisting shown in the table of FIG. 10 was manufactured, and a combination of the first raw cloth A1 and the second raw cloth B7 A hook-and-loop fastener of Comparative Example 5 was obtained. That is, in Comparative Example 5, the drawn multifilament yarn for obtaining the pile yarn for the second raw fabric was not subjected to false twisting. Other conditions for manufacturing the second raw fabric are the same as in the first embodiment.

A 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 a hook-and-loop fastener of Comparative Example 5. When this hook-and-loop fastener was evaluated for bonding strength and washing abrasion resistance as described above, the washing resistance was evaluated as "GOOD", but the bonding strength was evaluated as "NG". rice field.

3. Others The hook-and-loop fastener according to this embodiment has 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 from a first false twisted crimped pile yarn, and the hook fiber layer is composed of a plurality of hook fibers formed from a second false twisted crimped pile yarn. consists of

The first false-twisted crimped pile yarn is a bundle of polyester fibers (resin fibers) having a single filament fineness of 0.15 dtex or more and 0.7 dtex or less. It is a textured untwisted false-twisted crimped pile yarn. The second false twisted 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, and is false twisted under the condition of a false twist coefficient of 20,000 to 32,000. Twisted false-twisted crimped pile yarn. The hook fiber is obtained by cutting the vicinity of the top of the loop formed by the second false-twisted crimped pile yarn.

In the hook-and-loop fastener according to this 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 reduce damage to the fabric during washing while suppressing the fabric from being caught without using ultrafine fibers with a single fiber diameter of 1 μm or less, and can obtain high bonding strength. It is possible.

In the present embodiment, the loop fiber layer provided on the first raw fabric of the hook-and-loop fastener is composed of loop fibers made of polyester fibers having a single yarn fineness of 0.15 dtex or more and 0.7 dtex or less, and the loop fiber layer of the hook-and-loop fastener 2 The hook fiber layer provided on the raw fabric is composed of hook fibers made of polyester fibers having a single filament fineness of 1.5 dtex or more and 3.8 dtex or less. Therefore, it is possible to reduce damage to the fabric during washing while suppressing the fabric from being caught. In this embodiment, polyester fibers are used as the resin fibers, but other resin fibers may be used as long as they do not deviate from the gist of the present invention.

Furthermore, the loop fiber layer is composed of a plurality of loop fibers obtained from non-twisted false-twisted crimped pile yarn obtained by false-twisting under the condition that the false-twisting coefficient is 20,000 or more and 32,000 or less. Therefore, the force of adhesion between adjacent loop fibers is weak, and gaps are likely to occur. In addition, the hook fiber layers are obtained by cutting near the apex of untwisted false-twisted crimped pile yarn obtained by false-twisting under conditions of a false-twisting coefficient of 20,000 or more and 32,000 or less. , the tips of the adjacent hook fibers tend to spread. As a result, the unraveled hook fibers can easily enter the gaps between the loop fibers, and a high bonding strength can be obtained. Further, since the bedding covers 1 and 120 of the present embodiment use such hook-and-loop fasteners, the fabric is less likely to be caught or damaged during washing, and the joint surfaces are less likely to come off.

In the method for manufacturing the hook-and-loop 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 condition of a false twist coefficient of 20,000 to 32,000. Thus, the loop fiber layer is formed by the first step of obtaining the untwisted first false-twisted crimped pile yarn and the formation of a plurality of loop fibers using the first false-twisted 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 twist processing 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 twisted crimped pile yarn. In the fourth step, hook fibers are formed by cutting the vicinity of the vertexes of the loops formed by the second false-twisted crimped pile yarn. Therefore, hook fibers can be formed relatively easily.

Although the embodiments of the present invention have been described above, the configuration of the present invention is not limited to the above embodiments, and various modifications can be made without departing from the gist of the invention. That is, the above-described embodiments should be considered as examples in all respects and not restrictive. The technical scope of the present invention is defined by the scope of claims rather than the description of the above embodiments, and is understood to include all modifications within the scope and meaning equivalent to the scope of claims. should.

INDUSTRIAL APPLICABILITY The present invention can be used for hook-and-loop fasteners used for bedding covers and the like.

1 Bedding cover (mattress cover)
2 Inner cover 3 Outer cover 10 Mattress 21 Upper surface fabric 22 Main body 22a to 22d Side fabric 22e Lower surface fabric 23a, 23b Opening and closing fastener 31 Outer shell upper surface fabric 32a to 32d Outer shell side fabric 40 First raw fabric ground thread 41 First Pile yarn of raw cloth 50 Ground yarn of second raw cloth 51 Pile yarn of second raw cloth 100 Pillow 110 Cushion 120 Bedding cover (pillow cover)
121 pillow surface fabric 122 first end fabric 123 second end fabric 200 bonding force measuring device LP first raw cloth LP1 ground layer of first raw cloth LP2 loop fiber layer CP second raw cloth CP1 ground of second raw cloth Layer CP2 Hook fiber layer

Claims (5)

A hook-and-loop 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 from a first false-twisted crimped pile yarn,
The hook fiber layer is composed of a plurality of hook fibers formed from a second false-twisted crimped pile yarn,
In the first false twisted crimped pile yarn, a bundle of resin fibers having a single yarn fineness of 0.15 dtex or more and 0.7 dtex or less has a false twist coefficient of 20,000 or more and 32,000 or less, and a false twist processing temperature of 180 ° C. A non -twisted false twisted crimped pile yarn false twisted under the conditions of 230° C. or more and a false twist draw ratio of 1.2 to 1.8
In the second false twisted crimped pile yarn, a bundle of resin fibers having a single filament fineness of 1.5 dtex or more and 3.8 dtex or less has a false twist coefficient of 20,000 or more and 32,000 or less, and a false twist processing temperature of 180 ° C. A non -twisted false twisted crimped pile yarn false twisted under the conditions of 230° C. or more and a false twist draw ratio of 1.2 to 1.8
A hook-and-loop fastener, wherein a first raw cloth and a second raw cloth are joined by engaging the loop fiber and the hook fiber. The first false-twisted crimped pile yarn and the second false-twisted crimped pile yarn are untwisted false-twisted crimped pile yarns obtained by false-twisting bundles of polyester fibers,
2. The hook-and-loop fastener according to claim 1, wherein the hook fibers are obtained by cutting the vicinity of the vertexes of the loops formed by the second false-twisted crimped pile yarn. A bedding cover comprising the hook-and-loop fastener according to claim 1 or claim 2, an inner cover fixed to the outer peripheral surface of bedding, and an outer cover,
One of the inner cover and the outer cover is provided with the first raw cloth of the hook-and-loop fastener, and the other is provided with the second raw cloth of the hook-and-loop fastener,
A bedding cover, wherein the outer cover is fixed to the upper surface of the inner cover by joining a first raw cloth and a second raw cloth. A bedding cover wrapped around the outer peripheral surface of bedding,
A first raw cloth and a second raw cloth of the hook-and-loop 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 bedding cover is fixed in the wound state by joining the first raw cloth and the second raw cloth. A method for manufacturing a hook-and-loop fastener having a first raw cloth having a loop fiber layer and a second raw cloth having a hook fiber layer,
A bundle of resin fibers having a single yarn fineness of 0.15 dtex or more and 0.7 dtex or less is subjected to a false twist coefficient of 20,000 or more and 32,000 or less, a false twist processing temperature of 180 ° C. or more and 230 ° C. or less, and a false twist draw ratio. a first step of obtaining a non-twisted first false-twisted crimped pile yarn by false-twisting under the condition that the is 1.2 or more and 1.8 or less ;
a second step of forming the loop fiber layer by forming a plurality of loop fibers using the first false twisted crimped pile yarn;
A bundle of resin fibers having a single yarn fineness of 1.5 dtex or more and 3.8 dtex or less is subjected to a false twist coefficient of 20,000 or more and 32,000 or less, a false twist processing temperature of 180 ° C. or more and 230 ° C. or less, and a false twist draw ratio. a third step of obtaining a non-twisted second false-twisted crimped pile yarn by false-twisting under the condition that the is 1.2 or more and 1.8 or less ;
a fourth step of forming the hook fiber layer by forming a plurality of hook fibers using a second false twisted crimped pile yarn;
A manufacturing method characterized in that, in the fourth step, the hook fibers are formed by cutting the vicinity of the vertexes of the loops formed by the second false twisted crimped pile yarn.

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