Top Bedding and Bedding Cover

The present invention relates to a top bedding and a bedding cover.

When in use, a comforter with a cover thereon may experience displacement within the cover. PTL 1 proposes a comforter cover with tie strings. The comforter cover disclosed in PTL 1 is formed by sewing together a front fabric and a back fabric into a bag shape, has an opening for inserting and removing a comforter, and has tie strings inside for attaching them to the comforter. Multiple tie strings are provided at the periphery of the comforter cover.

PTL 2 proposes a comforter cover that does not have tie strings. This comforter cover has a rectangular opening formed along the periphery of the upper surface of the cover body, and right-angled triangular fabric pieces are sewn to each corner of the opening. Both end portions of the oblique side of each fabric piece overlap with other fabric pieces, and the oblique sides of the fabric pieces form a hole in the shape of, for example, a diamond or rectangle for inserting and removing a comforter at the center portion. Elastic materials are attached to the oblique side portions, making the oblique sides stretchable.

PTL 1: JP3199806U

PTL 2: JPH07-30835U

However, in order to attach the comforter cover of PTL 1 to a comforter, tying the tie strings to the comforter is necessary, which is troublesome. Furthermore, if the tie strings are located away from the opening of the comforter cover, reaching the tie strings from the opening is difficult, making it difficult to tie the comforter with the tie strings.

In the comforter cover of PTL 2, elastic materials are provided on the oblique sides of the fabric pieces that form the insertion/removal hole, and the elastic materials allow the comforter placed inside to closely contact the comforter cover to prevent displacement. However, simply providing the elastic materials does not allow the comforter to closely contact the comforter cover sufficiently, and displacement cannot be sufficiently prevented.

The present invention has been accomplished in view of the problems mentioned above. An object of the present invention is to provide a bedding cover that can be easily attached to a top bedding, such as a comforter, and that can prevent displacement. Another object of the present invention is to provide a top bedding to which a bedding cover, such as a comforter cover, can be easily attached, and that can prevent displacement.

In order to achieve the above object, the present invention encompasses the subject matter described in the following items.

Item 1: A top bedding having a front surface and a back surface, at least one of the front surface and the back surface having at least one anti-slip region, and the anti-slip region having a coefficient of friction of 0.8 or more.

Item 2: The top bedding according to Item, wherein the area of the anti-slip region accounts for 20% or more of the total area of the area of the front surface and the area of the back surface.

Item 3: The top bedding according to Item 1 or 2, wherein the area of the anti-slip region accounts for 40% or more of the area of the front surface or the area of the back surface.

Item 4: The top bedding according to any one of Items 1 to 3, wherein the top bedding is rectangular in plan view, and the anti-slip region is arranged based on any one of the following arrangements A to F:

Item 5: A bedding cover, the bedding cover being configured to contain a bedding inside, the bedding cover having a first inner surface and a second inner surface, the bedding cover having at least one anti-slip region on at least one of the first inner surface and the second inner surface, the first inner surface and the second inner surface facing a front surface and a back surface of the bedding, and the anti-slip region having a coefficient of friction of 0.8 or more.

Item 6: The bedding cover according to Item 5, wherein the area of the anti-slip region accounts for 20% or more of the total area of the area of the first inner surface and the area of the second inner surface.

Item 7: The bedding cover according to Item 5 or 6, wherein the area of the anti-slip region accounts for 40% or more of the area of the first inner surface or the area of the second inner surface.

Item 8: The bedding cover according to any one of Items 5 to 7, wherein the bedding cover is rectangular in plan view, and the anti-slip region is arranged based on any one of the following arrangements A to F:

According to the present invention, displacement of a bedding cover with respect to a top bedding can be prevented.

An embodiment of the present invention is described with reference to the drawings.is a perspective view of a top beddingaccording to one embodiment of the present invention.is a plan view of the top bedding.is a cross-sectional view of the top beddingcontained in a known bedding cover. Below,are used for the purpose of explanation and are not used to represent the actual top beddingor bedding cover.

The top beddingincludes comforters, blankets, and other items that are placed over the body when sleeping. The top beddingis rectangular. Below, the top beddingis described using, as an example, a single-size comforter having a length Lin the width direction of 150 cm and a length Lin the length direction of 210 cm.

The top beddingaccording to this embodiment is not limited to be of the single size described above and may be of any size. The standard size of the top beddingvaries from country to country. For example, in Japan, commonly used sizes include a semi-double size (170 cm×210 cm), a double size (190 cm×210 cm), a queen size (210 cm×210 cm), and a king size (230 cm×210 cm). In the United States, commonly used sizes include a twin size (168 cm×218 cm), a twin XL size (168 cm×259 cm), a full size (203 cm×218 cm), a queen size (229 cm×229 cm), a king size (264 cm×229 cm), a California king size (274 cm×244 cm), and the like. In China, commonly used sizes include a single size (150 cm×200 cm), a double size (200 cm×230 cm), a queen size (220 cm×240 cm), a king size (240 cm×260 cm), and the like. The description in parentheses after each size indicates “the length Lin the width direction×length Lin the length direction”; however, these lengths are not strictly exact lengths and an error of several centimeters may occur.

As shown in, the top beddingis formed by sewing together the peripheries of a front fabricand a back fabric, and filling the internal space with a filling material. The outer surfaces, i.e., the upper and lower surfaces in, of the top beddingare referred to as the “front surface” and the “back surface,” respectively. The top beddingmay be used with either the front surfaceor the back surfacefacing up, and there is no difference in the usage of the front surfaceand the back surface.

The top beddinghas at least one anti-slip regionon at least one of the front surfaceand the back surface. In other words, the anti-slip regionforms at least part of the front surfaceand/or the back surfaceof the top bedding. The anti-slip regionhas a coefficient of friction of 0.8 or more, and more preferably 0.91 or more. From the viewpoint of preventing displacement between the top beddingand the bedding cover, a greater coefficient of friction is more preferable. “A coefficient of friction of 0.8 or more” means that either the static coefficient of friction or the kinetic coefficient of friction is 0.8 or more. Preferably, both the static coefficient of friction and the kinetic coefficient of friction are 0.8 or more. Static friction is the force that resists the initial movement of a surface sliding over another, and the force required to initiate the movement is equal to the force that resists the initial movement. The static coefficient of friction is the ratio between the static friction and the force acting perpendicular to the two surfaces of a test piece in a friction test. Kinetic friction is the force that resists the continuous sliding of one surface against another, and the force required for the continuous sliding is equal to the force that resists the continuous sliding. The kinetic coefficient of friction is the ratio between the kinetic friction and the force acting perpendicular to the two surfaces of a test piece in a friction test. The coefficient of friction is defined in JIS P8147:2010 (corresponding to ISO 15359:1999), and the coefficient of friction of the anti-slip regionis determined according to a measurement method based on JIS P8147:2010. JIS P8147:2010 defines the static coefficient of friction and the kinetic coefficient of friction.

In this embodiment, the anti-slip regionis composed of a fabric having an anti-slip function. The fabric constituting the anti-slip regionis overlapped and sewn onto the outer surface of the front fabricand/or the outer surface of the back fabricof the top beddingto form the front surfaceand/or the back surfaceof the top bedding.

The fabric constituting the anti-slip regionmay be any fabric that has a coefficient of friction of 0.8 or more. For example, the fabric constituting the anti-slip regionis a tricot knit fabric, the composition of the yarn used is 61% polyester and 39% spandex (polyurethane elastic fiber), and the basis weight is 79 gsm (gsm: weight (g) per square meter). The fabric constituting the anti-slip regionmay be a woven fabric, knitted fabric, or the like whose surface has been subjected to an anti-slip treatment, such as a polyurethane coating (PU coating). A brushed fabric, such as suede, may also be used. The anti-slip regionpreferably has a thickness that can maintain the coefficient of friction at 0.8 or more and that is as thin as possible so that the user does not feel the presence of the anti-slip regionwhen the top beddingis used by placing in the bedding cover(). Specifically, the thickness is preferably 3 mm or less, more preferably 2 mm or less, and even more preferably 1 mm or less.

In this embodiment, the front surfaceand/or the back surfaceof the top beddingare formed by the overlapping of the front fabricand the fabric constituting the anti-slip regionand/or the overlapping of the back fabricand the fabric constituting the anti-slip region. However, the present invention is not limited to this configuration. For example, the front surfaceand/or the back surfaceof the top beddingmay be formed by joining the fabric constituting the front fabricand the fabric constituting the anti-slip regionand/or joining the fabric constituting the back fabricand the fabric constituting the anti-slip region, in a planar form and sewing them together.

The front surfaceand the back surfaceof the top beddingmay each be composed of a single piece of fabric, at least a portion of which may constitute the anti-slip region. The yarn that constitutes the fabric of the anti-slip regionmay have an anti-slip function. In this case, as a material, a polyurethane-based yarn may be used, such as Lycra produced by Toray Opelontex Co., Ltd. or Roica produced by Asahi Kasei Corporation.

Alternatively, the anti-slip regionmay be formed by applying a coating agent having an anti-slip effect to the surface of the front fabricand/or the surface of the back fabric. The coating agent for use may be, for example, hydrogenated styrene thermoplastic elastomer (SEBS) Tuftec or S.O.E. produced by Asahi Chemical Synthetic Co., Ltd.

Furthermore, the anti-slip regionmay be formed by laminating a film material having an anti-slip effect onto the surface of the front fabricand/or the surface of the back fabric.

Arrangements A to F are described here as examples of the arrangement patterns of the anti-slip regionprovided on the front surfaceof the top bedding. It is also possible that the anti-slip regionis provided on the back surfaceof the top bedding.

In arrangement A, the anti-slip regionis strip-shaped in plan view. The length direction of the anti-slip regionis aligned with the width direction of the top bedding, and the anti-slip regionis provided at the center portion in the length direction of the top bedding, and on both sides in the length direction, sandwiching the center portion with intervals.

Arrangement A includes, for example, arrangement Ashown inand, and arrangement Ashown in. In arrangement A, the front surfaceof the top beddinghas three anti-slip regionsA toC (which may be simply referred to below as “the anti-slip region” or “the anti-slip regions” when no distinction is made). The anti-slip regionsA toC have the same strip shape in plan view. The anti-slip regionA is provided at the center portion in the length direction of the top bedding, and the anti-slip regionsB andC are provided along the ends on both sides in the length direction of the top bedding, sandwiching the center portion. There are intervals between the adjacent anti-slip regionsA,B, andC, and the regions between the adjacent anti-slip regionsA,B, andC are composed of the front fabricor the back fabricof the top bedding.

The length Lof the strip-shaped anti-slip regionis equal to the length Lin the width direction of the top bedding. That is, the anti-slip regionis provided over the entire length in the width direction of the top bedding.

In this specification, the phrase “the anti-slip regionis provided over the entire length in the width direction of the top bedding” means not only that the anti-slip regionextends entirely between one end and the other end in the width direction of the top bedding, but also that the ends in the length direction of the anti-slip regionare positioned slightly inward (by a length of 10% or less of the length Lin the width direction) from the one end and the other end in the width direction of the top bedding.

The width Lof the anti-slip regionis set according to the percentage of the area of the anti-slip regionin the area of the front surfaceor the area of the back surfaceof the top beddingdescribed later.

shows arrangement Aas another example of arrangement A. Arrangements Aand B to F are explained below only for the configurations different from that of arrangement A, and the explanation is omitted for the same configuration. In arrangement A, the anti-slip regionsB andC are positioned inward in the length direction from the ends on both sides in the length direction of the top bedding, sandwiching the center portion. The intervals between the ends in the length direction of the top beddingand the anti-slip regionsB andC are each preferably 3% or less of the length Lin the length direction of the top bedding; in this embodiment, the interval is set to 4.2 cm, i.e., 2%.

shows an example of arrangement B. In arrangement B, the anti-slip regionsA toC are each strip-shaped in plan view and are provided along the length direction of the top beddingat the center portion in the width direction of the top beddingand on both sides in the width direction, sandwiching the center portion with intervals.

More specifically, in arrangement B shown in, the anti-slip regionA is provided at the center portion in the width direction of the top bedding, and the anti-slip regionsB andC are provided along the ends on both sides in the width direction of the top bedding, sandwiching the center portion. The length Lof the strip-shaped anti-slip regionis equal to the length Lin the length direction of the top bedding. That is, the anti-slip regionis provided over the entire length in the length direction of the top bedding.

The phrase “the anti-slip regionis provided over the entire length in the length direction of the top bedding” means not only that the anti-slip regionextends entirely between one end and the other end in the length direction of the top bedding, but also that the ends in the length direction of the anti-slip regionare positioned slightly inward (by a length of 10% or less of the length Lin the length direction) from the one end and the other end in the length direction of the top bedding.

In arrangements Aand A, and arrangement B, three anti-slip regionsA toC are provided. However, it is also possible to further provide one or more anti-slip regionsbetween the anti-slip regionsA andB, and between the anti-slip regionsA andC.

shows an example of arrangement C. In arrangement C, the anti-slip regionsB andC are strip-shaped in plan view, and those two anti-slip regions are provided along the width direction of the top beddingon both sides in the length direction of the top bedding. That is, arrangement C is equal to arrangement Al in which the anti-slip regionA is not provided.

shows an example of arrangement D. In arrangement D, the anti-slip regionsB andC are strip-shaped in plan view, and those two anti-slip regions are provided along the length direction of the top beddingon both sides in the width direction of the top bedding. That is, arrangement D is equal to arrangement B in which the anti-slip regionA is not provided.

As shown in, in arrangement E, the anti-slip regionis strip-shaped in plan view and is provided annularly along the peripheral edge portions of the top bedding(the end portions in the width direction and the length direction).

As shown in, in arrangement F, the anti-slip regionis rectangular in plan view and is provided at least at the center portion of the top bedding. In the example shown in, the anti-slip regionis provided over the entire surface of the top bedding.

In, the anti-slip regionis provided over the entire front surfaceof the top bedding; however, it is also possible that the anti-slip regionhas a shape that is similar to that of the front surfaceor the back surfaceof the top beddingand that is smaller than that of the top bedding. In this case, the anti-slip regionis provided at the center portion of the top bedding, and the front fabricor the back fabricis exposed around the anti-slip region.

The anti-slip regionis provided on at least one of the front surfaceand the back surfaceof the top bedding, based on any one of the above arrangements A to F. That is, the anti-slip regionmay be provided on either the front surfaceor the back surfaceof the top bedding, or may be provided on both the front surfaceand the back surfaceof the top bedding. When the anti-slip regionis provided on both surfaces, the arrangement patterns may be different between the front surfaceand the back surface.

When the anti-slip regionis provided on both the front surfaceand the back surfaceof the top bedding, particularly preferred combinations of the arrangement patterns are as follows.

Combination 1: front surface: arrangement A, back surface: arrangement A

Combination 2: front surface: arrangement A, back surface: arrangement B

Combination 3: front surface: arrangement A, back surface: arrangement F