Quilt cover and bedding set

Abstract

To provide a quilt cover without strings which hardly displaces a futon in the quilt cover and is easily detached / attached without damaging light-weight property or softness, and a bedding set.SOLUTION: A quilt cover includes a nonslip material. The nonslip material contacts a part where a futon swells, and can prevent displacement.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a stringless duvet cover and a duvet set that prevent a duvet from slipping out of place inside the duvet cover and that can be easily removed and attached without compromising lightness and softness. [Background technology]

[0002] Conventionally, there have been proposals for stringless duvet covers that prevent the duvet from slipping inside, with small friction pieces made of soft resin, synthetic rubber, etc., attached to them (for example, Patent Document 1). However, there is a risk that such duvet covers will lose their light weight and softness. Also, Patent Document 2 proposes a futon cover using ultrafine polyester fibers. However, the anti-slip properties are still not sufficient. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2006-000349 A [Patent Document 2] JP 2015-205205 ​​A Summary of the Invention [Problem to be solved by the invention]

[0004] To provide a stringless futon cover and a futon set which prevent a futon from slipping out of place inside the cover and can be easily put on and taken off without compromising lightness and softness. [Means for solving the problem]

[0005] As a result of intensive research into achieving the above object, the inventors discovered that by devising a position for attaching a non-slip material to the surface of a stringless futon cover that comes into contact with the futon, the futon would not easily slip inside the futon cover, and after further intensive research, they arrived at the present invention. Thus, the following invention is provided.

[0006] 1. A futon cover containing an anti-slip material, characterized in that the anti-slip material comes into contact with the bulging parts of the futon and prevents it from slipping. 2. The duvet cover described in 1 above, wherein the anti-slip material is made of fabric a containing fiber A having a single fiber diameter of 10 to 10,000 nm and fiber B having a single fiber diameter larger than that of fiber A, and said fabric a is attached at a position 11 to 30 cm from the end of the duvet cover body. 3. The duvet cover according to claim 2, wherein the fabric a is a pile fabric, the pile is made of fiber A, and the pile length is 2 mm or more. 4. A duvet cover according to any one of 1 to 3 above, wherein the anti-slip material is positioned so as to come into contact with a duvet including a duvet cover material containing ultrafine yarns having a single fiber fineness of 0.5 dtex or less. 5. A futon set comprising a futon cover as described in any one of 1 to 4 above, and a futon including a futon cover containing ultrafine yarns having a single fiber fineness of 0.5 dtex or less. Effect of the Invention

[0007] According to the present invention, a stringless duvet cover and a duvet set are obtained which prevent the duvet from slipping inside the duvet cover and can be easily removed and attached without compromising lightness and softness. [Brief description of the drawings]

[0008] [Figure 1] 1 is a diagram showing an example of a duvet cover of the present invention, the left diagram showing a schematic diagram of the duvet cover in an open state, and the right diagram showing a schematic diagram of the duvet cover in a closed state. [Diagram 2] 1 is a diagram showing the distance from the end of the duvet cover to fabric a. [Diagram 3]1 is a photograph in place of a drawing showing a product misalignment test method. [Figure 4] 1 is a diagram showing a schematic diagram of a product displacement test method, in which fabric a is positioned on the inside of the comforter cover (the side in contact with the comforter). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] <Anti-slip material> In the duvet cover of the present invention, the anti-slip material may be made of an elastic material such as urethane, but is preferably made of fabric a containing fiber A having a single fiber diameter of 10 to 10,000 nm and fiber B having a single fiber diameter larger than that of fiber A.

[0010] (Fiber A) In the fiber A, the single fiber diameter (diameter of a single fiber) is within a range of 10 to 10,000 nm (preferably 10 to 3,000 nm, more preferably 250 to 1,500 nm, and particularly preferably 510 to 800 nm). When the single fiber diameter is smaller than 10 nm, the fiber strength decreases, which is not preferable in practice. On the other hand, when the single fiber diameter is larger than 10,000 nm, it is not preferable because a sufficient anti-slip effect may not be obtained. Here, when the cross-sectional shape of the single fiber is a modified cross-section other than a circular cross-section, the diameter of the circumscribed circle is defined as the single fiber diameter. The single fiber diameter can be measured by photographing the cross section of the fiber with a transmission electron microscope.

[0011] In the case of the filament yarn (long fiber) of the fiber A, the number of filaments is not particularly limited. In order to obtain an excellent anti-slip effect, it is preferable that the number of filaments is 500 or more (more preferably 2000 to 50000). In addition, the total fineness of the filament yarn (the product of the single fiber fineness and the number of filaments) is preferably within the range of 30 to 800 dtex.

[0012] The fiber form of the fiber A is not particularly limited, and may be either a short fiber or a long fiber (filament yarn). Among these, a long fiber (filament yarn) is preferable. The cross-sectional shape of the single fiber is also not particularly limited, and may be a known cross-sectional shape such as a round, triangular, flat, hollow, etc. In addition, it is acceptable if the fiber has been subjected to normal air processing or false twist crimp processing.

[0013] The type of polymer forming the fiber A is not particularly limited, but polyester-based polymers or nylon-based polymers are preferred. For example, polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polylactic acid, polyester copolymerized with a third component, and the like are preferred. Such polyesters may be polyesters that have been material recycled or chemically recycled. Furthermore, polyesters obtained using a catalyst containing a specific phosphorus compound and a titanium compound, as described in JP-A-2004-270097 and JP-A-2004-211268, polylactic acid, and stereocomplex polylactic acid may be used. The polyester polymer may contain one or more of a micropore-forming agent, a cationic dye-dyeable agent, a coloring inhibitor, a heat stabilizer, a fluorescent whitening agent, a matting agent, a colorant, a moisture absorbent, and inorganic fine particles.

[0014] (Fiber B) Fabric a contains fiber B, which has a larger single fiber diameter than fiber A, and thus the dimensional stability of the fabric is improved. The single fiber diameter of fiber B is preferably greater than 10,000 nm (preferably 10 to 33 μm). Incidentally, 33 μm is equivalent to approximately 10 dtex in terms of fineness. If the single fiber diameter of fiber B is 10,000 nm (10 μm) or less, the dimensional stability of fabric a may be impaired. Here, when the cross-sectional shape of the single fiber is an irregular cross-section other than a circular cross-section, the diameter of the circumscribed circle is taken as the single fiber diameter. Incidentally, the single fiber diameter can be measured by photographing the cross section of the fiber with a transmission electron microscope, as described above.

[0015] The fiber form of the fiber B is not particularly limited and may be a spun yarn. In particular, the fiber B is preferably a multifilament having a total fineness of 33 to 150 dtex and a filament count of 10 to 300. The cross-sectional shape of the single fiber is not particularly limited and may be a known cross-sectional shape such as a round, triangular, flat, hollow, etc. The fiber B may be one type or multiple types such as fiber B1, fiber B2, fiber B3, etc.

[0016] The type of fiber B is not limited, and may be any of synthetic fibers, semi-synthetic fibers, regenerated fibers (e.g., rayon), natural fibers (e.g., cotton fibers), etc. Here, the type of polymer forming the synthetic fiber is not particularly limited, and may be polyester, nylon, etc.

[0017] Among them, preferred examples of the polymer forming the fiber B include polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polylactic acid, stereocomplex polylactic acid, polyester copolymerized with a third component, polyether ester, and urethane. Such polyester may be polyester that has been recycled by material recycling or chemical recycling. Furthermore, polyester, polylactic acid, and stereocomplex polylactic acid obtained by using a catalyst containing a specific phosphorus compound and a titanium compound, as described in JP-A-2004-270097 and JP-A-2004-211268, may be used. Among them, elastic resins such as polyether ester and polyurethane are preferred when the anti-slip effect is to be further improved. The polymer forming the fiber B may contain one or more of a micropore-forming agent, a cationic dye-dyeable agent, a coloring inhibitor, a heat stabilizer, a fluorescent whitening agent, a matting agent, a colorant, a moisture absorbent, and inorganic fine particles.

[0018] <Manufacture of Fabric A> The fabric a can be produced, for example, by the following production method.

[0019] (Fiber A) First, an islands-in-sea type composite fiber (fiber for fiber A) formed of a sea part and island parts having a diameter of 10 to 10,000 nm is prepared. As such an islands-in-sea type composite fiber, the islands-in-sea type composite fiber multifilament (number of islands: 100 to 1,500) disclosed in JP 2007-2364 A is preferably used.

[0020] That is, a polymer that is easily soluble in an aqueous alkaline solution is used as the sea component polymer. Suitable examples of such an aqueous alkaline solution-soluble polymer include polylactic acid, ultra-high molecular weight polyalkylene oxide condensation polymer, polyethylene glycol compound copolymer polyester, and copolymer polyester of polyethylene glycol compound and 5-sodium sulfonate isophthalic acid. Among them, a polyethylene terephthalate copolymer polyester having an intrinsic viscosity of 0.4 to 0.6, which is copolymerized with 6 to 12 mol % of 5-sodium sulfoisophthalic acid and 3 to 10 weight % of polyethylene glycol having a molecular weight of 4000 to 12000, is preferred.

[0021] On the other hand, the island component polymer is preferably a polyester such as fiber-forming polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polylactic acid, or a polyester copolymerized with a third component. The polymer may contain one or more of the following, if necessary, within the scope of the object of the present invention: a micropore-forming agent, a cationic dye-enabling agent, a coloring inhibitor, a heat stabilizer, a fluorescent whitening agent, a matting agent, a colorant, a moisture absorbent, or inorganic fine particles.

[0022] In the islands-in-sea type composite fiber composed of the above sea part polymer and island part polymer, the melt viscosity of the sea part during melt spinning is preferably greater than the melt viscosity of the island part polymer. The diameter of the island parts must be in the range of 10 to 1000 nm. In this case, if the shape of the island parts is not a perfect circle, the diameter of the circumscribed circle is determined. In the islands-in-sea type composite fiber, the sea-island composite weight ratio (sea:island) is preferably in the range of 40:60 to 5:95, particularly preferably in the range of 30:70 to 10:90.

[0023] Such islands-in-sea type composite fibers can be easily produced, for example, by the following method. That is, the above-mentioned sea part polymer and island part polymer are melt spun. Any spinneret can be used for melt spinning, such as one having a group of hollow pins or a group of fine holes for forming island parts. The discharged islands-in-sea type composite fiber is solidified by cooling air, melt spun at preferably 400 to 6000 m / min, and then wound up. The obtained undrawn yarn is preferably made into a composite fiber having desired strength, elongation, and heat shrinkage properties through a separate drawing process. Alternatively, the discharged islands-in-sea type composite fiber may be taken up by a roller at a constant speed without being wound up, and then subjected to a drawing process and then wound up.

[0024] In the islands-in-the-sea type composite fiber (multifilament) thus obtained, the single fiber fineness, the number of filaments, and the total fineness are preferably within the ranges of 0.5 to 10.0 dtex, 5 to 75 filaments, and 30 to 170 dtex, respectively. The boiling water shrinkage of such islands-in-the-sea type composite fiber is preferably within the range of 5 to 30%. The filament yarn may be an ultrafine fiber made of composite fiber such as petal-type composite fiber or side-by-side type composite fiber, or an ultrafine fiber obtained by a normal spinning and drawing process.

[0025] (Fiber B) On the other hand, fiber B is prepared, the single fiber diameter of which is larger than that of fiber A. Fiber B is preferably a polyester long fiber having a boiling water shrinkage rate of less than 10%.

[0026] (Weaving of Fabric A) Next, fabric a is woven using the islands-in-the-sea type composite fibers and fiber B. In such a fabric, it is preferable that the islands-in-the-sea type composite fibers are exposed on either the front or back surface of the fabric.

[0027] In this case, although a woven fabric may be used, it is preferable to knit the fabric a by interweaving the filament yarn A and the fiber B. The structure is preferably a warp knit. Examples of the structure include single denbigh knit, single atlas knit, double cord knit, half knit, half base knit, satin knit, half tricot knit, fleece knit, jacquard knit, pile knit, etc. In particular, a queens cord pile structure is particularly preferable.

[0028] Fabric a preferably has pile made of fiber A and a pile length of 2 mm or more (more preferably 2 to 10 mm). The longer the pile length, the better the anti-slip properties, but if it is too long, it may become tangled or break during processing (due to friction during processing, etc.), or it may have poor snagging, which may impair the product value. The pile length is the length from the base of the pile to the tip of the pile. It is also preferable that such pile is made of fiber A.

[0029] Fabric A has an air permeability of 200cc / cm 2 sec or more (preferably 200 to 500 cm 2 ·sec) The air permeability is measured in accordance with JIS L1018-1990 6.34 (Fragile method).

[0030] Here, the thickness of the fabric a is preferably within the range of 0.4 to 2 mm. If the thickness is less than 0.4 mm, it is too thin and difficult to attach the fabric a to a futon cover. If the thickness exceeds 2 mm, the fabric a has too many projections and recesses, which may cause the futon itself to become uneven, reducing comfort. Furthermore, when the fabric a has pile, it is preferable that the pile is disposed on the comforter side (ie, in contact with the comforter).

[0031] (Alkaline aqueous solution treatment) Next, the fabric is treated with an alkaline aqueous solution to dissolve and remove the sea component of the islands-in-sea type composite fibers with the alkaline aqueous solution, whereby the islands-in-sea type composite fibers become fibers A having a single fiber diameter of 10 to 10,000 nm, and fabric a containing fibers A having a single fiber diameter of 10 to 10,000 nm is obtained. In this case, the alkaline aqueous solution treatment is preferably performed using an aqueous NaOH solution with a concentration of 3 to 4% at a temperature of 55 to 65°C.

[0032] (Dyeing process) In addition, the fabric may be dyed before and / or after the dissolving and removing treatment step using the alkaline aqueous solution. Calendaring (heating and pressing) and embossing may be performed. In addition, various types of processing may be additionally applied, such as conventional nap-raising and water-repellent processing, as well as ultraviolet shielding, antistatic, antibacterial, deodorant, insect repellent, phosphorescent, retroreflective, and negative ion generating functions.

[0033] <Duvet cover> In the duvet cover of the present invention, the non-slip material (preferably the fabric A) is attached to the duvet cover body. For example, it is preferable to attach fabric A to the back surface of the duvet cover body facing the person (the surface that contacts the duvet) and / or the back surface of the outside (the surface that contacts the duvet). The attachment method may be sewing or bonding (thermal bonding or chemical bonding).

[0034] In addition, it is preferable that the non-slip material (preferably the fabric a) is attached to the duvet cover body at a position 11 to 30 cm (more preferably 12 to 22 cm) from the end of the duvet cover body so that it comes into contact with the more bulging part of the duvet that is uniformly filled with batting. By attaching it at such a position, fabric a comes into contact with the bulging part between the quilting of the duvet, and an excellent non-slip effect is obtained, which is preferable. Note that this distance is measured as the shortest distance between the end of the duvet cover and the end of fabric a.

[0035] The dimensions of the fabric A are preferably within the range of 3-20 cm (preferably 5-13 mm) in width and 50 cm in length, or 150 cm in total width of a single comforter cover. The number of such locations may be one or more. In particular, it is preferable to attach the fabric A at one location 11-30 cm from the top end of the comforter cover body and at another location 11-30 cm from the bottom end of the comforter cover body.

[0036] Standard sizes for futon covers are 150cm wide x 210cm long for single, 170cm wide x 210cm long for semi-double, 190cm wide x 210cm long for double, 210cm wide x 210cm long for queen, and 230cm wide x 210cm long for king.

[0037] Furthermore, the type of filling for the futon can be either feathers or synthetic fibers (carded cotton, granulated cotton, etc.), and it is preferable that the fabric a is attached to the futon cover body (the surface that comes into contact with the futon) so that it comes into contact with the fluffier parts of the futon that are evenly filled with the filling, thereby providing anti-slip properties for the fabric a (exhibiting grip in the shear direction) and further strengthening the contact points due to the weight of the futon itself.

[0038] Here, when the duvet cover is open, it is preferable that the above-mentioned portion is located on the back side of the duvet cover and that the area ratio of the portion is 3% or more (preferably 3 to 40%) of the surface area of ​​the back side in order to prevent the duvet from slipping inside the duvet cover. The area ratio is calculated by the following formula. Area ratio = [total area of ​​the relevant part / total surface area of ​​the back of the duvet cover] x 100

[0039] Here, the "total surface area of ​​the back of the duvet cover" is measured by opening the duvet cover as shown in Figure 1. For example, if a duvet cover measures 150 cm wide and 210 cm long and has two areas of 10 cm x 150 cm, the area ratio will be as follows: Area ratio = ((10 x 150 x 2) / (150 x 210) x 2) x 100 = 4.76%.

[0040] Since the duvet cover of the present invention has the above-mentioned structure, it has the effect of preventing the duvet from slipping inside the duvet cover without compromising the lightness and softness of the duvet cover. It is preferable that the duvet cover does not have strings. Since the duvet cover can be easily removed from the duvet, when removing the duvet cover, the duvet is inserted into the duvet cover as desired, and two of the four corners are held and tapped (due to the characteristics of the anti-slip material that makes it easy to remove and attach), and the duvet cover can be easily removed and attached. In the case of a strong adhesive tape, it adheres to all parts of the duvet cover during preparation for attaching the duvet cover, and it is difficult to set, so it is important to find a balance between grip in the shear direction and peelability in the vertical direction.

[0041] Here, it is preferable that the fabric a has a friction coefficient of 0.9 or more (preferably 0.9 to 2.0). The coefficient of friction is measured by the following method. In an environment with a temperature of 20°C and a humidity of 65% RH, a futon fabric sample is laid on a smooth table. Next, a head (50 gf weight made by placing a 45 gf load on a 5 gf polystyrene foam with a bottom surface of 5 x 8 cm) with a fabric containing fiber A is placed on the futon fabric. Next, the head is pulled at a speed of 100 mm / min using a tensile tester, and the resistance force (cN) is taken as the friction force. The coefficient of friction is calculated by dividing the obtained friction force (cN) by (head load: 50 gf).

[0042] Next, the comforter set of the present invention includes the comforter cover and the comforter, and the comforter cover preferably includes ultrafine yarns having a single fiber fineness of 0.5 dtex or less (preferably 0.000001 to 0.5 dtex). In this case, it is preferable that the non-slip material is arranged so as to come into contact with the comforter including the comforter cover including ultrafine yarns having a single fiber fineness of 0.5 dtex or less.

[0043] Here, the ultrafine yarn preferably has 70 or more filaments (more preferably 90 or more, particularly preferably 130 to 10,000 filaments) and a total fineness of 60 dtex or less (preferably 20 to 55 dtex, particularly preferably 20 to 50 dtex). Such ultrafine yarn may be raw silk (non-crimped yarn), but false twisted crimped yarn is preferred.

[0044] The fibers forming the ultrafine yarns are preferably polyester fibers as described above. The weaving and knitting structure of the futon cover is not particularly limited, and examples thereof include three-pronged weaves such as plain weave, twill weave, and satin weave, varied weaves such as varied weaves and varied twill weaves, single double weaves such as warp double weave and weft double weave, woven fabrics such as warp velvet and ripstop, and knitted fabrics such as warp knitting and circular knitting.

[0045] The fabric weight of the futon cover is 80g / m2 for light weight. 2 Less than or equal to 30 to 70 g / m 2 ) is preferably. Such a futon cover may be subjected to a calendaring process, a dyeing process, a water-absorbing process, a nap raising (buffing) process, or the like.

[0046] In addition, the futon preferably contains down, feathers, cotton, wool, rayon, acrylic fiber, polyester fiber, or other synthetic fiber as the filling, and is quilted. When the futon is quilted, the fabric a of the futon cover comes into contact with the bulging parts between the quilts of the futon, which is preferable because it provides an excellent anti-slip effect. In this case, the quilting is preferably applied in a lattice pattern, with each side of each square being 30 to 50 cm.

[0047] Since the futon set of the present invention has the above-mentioned configuration, the futon does not easily slip out of the futon cover without compromising its light weight and softness, and the futon cover can be easily removed and attached. Furthermore, to make it harder for the comforter inside the comforter cover to slip, it is better to have the surface of the comforter cover with fabric a attached facing the human body so that the comforter's own weight (for single comforters, 0.5 to 1.8 kg per piece is a general specification) comes into contact with the anti-slip fabric a inside the comforter cover, and for the comforter cover surface with fabric a attached to be between the weight of the comforter and the human body. EXAMPLES

[0048] Examples and Comparative Examples of the present invention will now be described in detail, but the present invention is not limited thereto. The measurement items in the examples were measured by the following methods.

[0049] <Melt viscosity> The polymer after drying is set in an orifice set to the melting temperature of the ruder during spinning, and kept molten for 5 minutes. Then, it is extruded under several load levels, and the shear rate and melt viscosity at that time are plotted. The plots are smoothly connected to create a shear rate-melt viscosity curve, and the shear rate is 1000 s -1 Check the melt viscosity at this time.

[0050] <Dissolution rate> The sea and island components were wound at a spinning speed of 1000-2000 m / min using a 0.3φ-0.6L×24H spinneret, and further stretched to a residual elongation of 30-60% to produce a multifilament of 84 dtex / 24 strands. The weight loss rate was calculated from the dissolution time and amount of dissolution in each solvent at the temperature to be dissolved at a bath ratio of 100.

[0051] <Single fiber diameter> The fabric was photographed using an electron microscope, and the single fiber diameters of five samples were measured and the average value was calculated.

[0052] <Coefficient of friction of fabric> The frictional force (cN) was measured as a substitute for the frictional force of fabric (fiber) / fabric (fiber) by the following method. In an environment of 20°C temperature and 65% RH humidity, a futon fabric sample was laid on a smooth table as shown in FIG. 2. Next, a head (50 gf weight with a 45 gf load placed on a 5 gf polystyrene foam with a bottom surface of 5 x 8 cm) with a fabric containing fiber A was placed on the futon fabric. Next, the resistance force (cN) when the head was pulled at a speed of 100 mm / min by a tensile tester was taken as the frictional force. The friction coefficient was calculated by dividing the obtained frictional force (cN) by (head load: 50 gf).

[0053] In addition, a white cotton fabric (Kanakin No. 3) for testing conforming to JIS L0803 was also used as a bedding material for measuring the friction coefficient of fabric a. In addition, it is believed that a material with greater resistance to pulling, with less difference between the initial and later stages of the measurement, is more effective in preventing the comforter and comforter cover from slipping, and a retention rate of 80% or more is considered high.

[0054] <Breathability> Measurement was performed according to JIS L1018-1990 6.34 (Fragile method).

[0055] <Installation location> In a single-size futon (150cm wide x 210cm long), with a quilt design of 4 squares in the width direction and 5 squares in the length direction, and with 0.8 to 1.5 kg of feathers per futon, the size of each square is 35cm wide x 42cm long. In the case of this feather futon, approximately 0.04 to 0.075 kg of feathers is filled into each square, and the position from the edge of the futon cover body and the width of the non-slip material were determined so that the bulging part would come into contact with the non-slip material attached to the futon cover.

[0056] <Anti-slip properties> First, a test single duvet cover and a commercially available 210cm x 150cm duvet (quilted in a grid pattern, 42cm x 35cm per square) were prepared, and a mark was made on the top end (head end) of each, and the duvet was placed inside the duvet cover to form a duvet set. The duvet cover surface with fabric A attached was set so that the duvet's own weight would come into contact with the non-slip fabric A inside the duvet cover, and the duvet cover surface with fabric A attached was set facing the mannequin.

[0057] Next, as shown in Figures 3 and 4, a mannequin (upper body) was placed on the mattress, and an oval cushion (length 57 cm x width 45 cm x thickness 17-19 cm) was also placed to represent the lower leg, and the futon set was placed on top of that. Next, to represent knee flexion, a wire was passed under the futon set near the knee and the wire was lifted 50 cm upwards 10 times. The positional deviation between the top mark of the test futon cover and the top mark of the duvet was measured. The average value was calculated for an N number of 5. If the number of attachment points was different (one or two), the total average value was calculated.

[0058] <Usage test> Twenty test subjects conducted a one-month usage test, during which they rated the comforter's ability to shift within the cover when sleeping on it in the usual way, using the following three-level scale (Grade 3: Almost no shifting, Grade 2: May shift with large movements, Grade 1: May shift with small movements).

[0059] <Pile length> The length from the base of the pile to the tip of the pile was measured with a vernier caliper at any five points and the average value was calculated.

[0060] [Example 1] (Fiber A) The island component was polyethylene terephthalate (melt viscosity at 280°C: 1200 poise, matting agent content: 0 wt%), and the sea component was polyethylene terephthalate copolymerized with 6 mol% of 5-sodium sulfoisophthalic acid and 6 wt% of polyethylene glycol having a number average molecular weight of 4000 (melt viscosity at 280°C: 1750 poise) (dissolution rate ratio (sea / island) = 230). A sea:island composite undrawn fiber with a sea:island ratio of 30:70 and 836 islands was melt spun at a spinning temperature of 280°C and a spinning speed of 1500 m / min, and then taken up once.

[0061] The obtained undrawn yarn was roller-drawn at a drawing temperature of 80° C. and a draw ratio of 2.5 times, then heat-set at 150° C. and wound up. The obtained islands-in-the-sea type composite fiber (drawn yarn A-1 for fiber A) had a fiber diameter of 56 dtex / 10 fibers, and when the fiber cross section was observed with a transmission electron microscope (TEM), the islands had a round cross section and a diameter of 710 nm.

[0062] (Fiber B) On the other hand, polyester (total fineness 84 dtex / 36 strands, strength 4.15±0.44 cN / dtex, elongation 34±7%, BWS 9.1±1.5%, interlace number 15±9 pieces / m, OPU 0.55±0.20%) was prepared as fiber B.

[0063] (Fabric a) Next, using these yarns and a 28G 130-inch wide tricot knitting machine (Karl Mayer KS3), non-crimp fiber B was used for L1 and L2, and stretched fiber A-1 was used for L3 to obtain a grey fabric with the following queens cord pile knit structure, in which fiber A was present in the outermost layer of fabric a and the pile length of fiber A was 5 mm.

[0064] (knit structure) L1:34 / 10 / / L2:10 / 01 / / L3:10 / 78 / /

[0065] Next, in order to remove the sea component from the obtained island-in-sea composite drawn yarn, the fabric was subjected to an alkali weight reduction treatment at 60°C using a 25g / l NaOH aqueous solution, resulting in a weight reduction rate of 10±1.5%. After that, high-pressure dyeing was performed at 120°C, antistatic treatment was performed as a resin treatment, and a final dry heat setting was performed at 160±5°C for about 30 to 60 seconds, resulting in a basis weight of 105g / m 2 Fabric a was obtained having a total width of 220 cm. Fabric a was slit into a width of 7 cm to obtain a tape-shaped fabric a. In the obtained tape-like fabric a, the single fiber diameter of the drawn yarn A-1 for fiber A (39 dtex / 8360 strands) was 710 nm.

[0066] (Duvet cover) The tape-like fabric a was used as an anti-slip material by setting the end of the tape 15 cm from the edge on one side of the inside of a commercially available duvet cover (a plain weave fabric with a 100% cotton cover), and sewing it to the duvet cover in two places, top and bottom, across its 150 cm width.

[0067] (Futon set) A single-sized duvet (nude duvet) was obtained, with 1.2 kg of feathers (85% down or more) in the filling per piece, and 4 squares wide and 5 squares long. The single-sized nude duvet was inserted into the duvet cover obtained above, and the edge of the duvet was attached to the edge of the cover to obtain a duvet set (duvet with cover attached). After that, a mannequin and a cushion simulating the lower leg were placed on top of the mattress, and then the mattress set was placed over it. At that time, assuming knee flexion, a wire was passed under the mattress set near the knee so that the wire could move up and down in the vertical direction (the mattress set could move up and down). The results are shown in Table 1.

[0068] [Example 2] The fabric a was treated and attached in the same manner as in Example 1, except that the tape width was changed to 7 cm, and was evaluated in the same manner as in Example 1.

[0069] [Example 3] The same treatment and evaluation were carried out as in Example 1, except that the attachment position to the duvet cover was 11 cm from the edge.

[0070] [Example 4] The same treatment and evaluation were carried out as in Example 1, except that the attachment position on the duvet cover was 15 cm from the edge and the attachment position was in one place only at the top (near the neck of the mannequin for the anti-slip evaluation).

[0071] [Example 5] The same processing and evaluation were carried out as in Example 1, except that the knitting structure of fabric a was changed as follows. (knit structure) L1:23 / 10 / / L2:10 / 01 / / L3:10 / 910 / /

[0072] [Example 6] The same processing and evaluation were carried out as in Example 1, except that the knitting structure of fabric a was changed as follows. (knit structure) L1:23 / 10 / / L2:01 / 10 / / L3:10 / 910 / /

[0073] [Comparative Example 1] The same treatment and evaluation were carried out as in Example 1, except that the attachment position of fabric a was changed to 10 cm from the end.

[0074] [Comparative Example 2] The same treatment and evaluation were carried out as in Example 4, except that the attachment position of fabric a was changed to 10 cm from the end.

[0075] [Comparative Example 3] The same processing and evaluation were carried out as in Example 1, except that the knitting structure was as follows, the pile length was 1.8 mm, and the attachment position of fabric a was 10 cm from the end. (knit structure) L1:10 / 23 / / L2:01 / 10 / / L3:10 / 56 / /

[0076] [Reference example] The same processing and evaluation were carried out as in Example 1, except that the knitting structure was as follows, the pile length was 1.8 mm, and the attachment position of fabric a was 15 cm from the end. (knit structure) L1:10 / 23 / / L2:01 / 10 / / L3:10 / 56 / /

[0077] [Table 1] [Industrial Applicability]

[0078] According to the present invention, a stringless duvet cover and duvet set are provided which prevent the duvet from slipping inside the duvet cover without compromising lightness and softness, and which are of extremely great industrial value. [Explanation of symbols]

[0079] 1: Duvet cover 2:Fabric a 3:Fabric a 4:Fabric a

Claims

1. A futon cover including a non-slip material, the non-slip material being capable of contacting the bulging parts of the futon to prevent the futon from slipping.

2. The duvet cover according to claim 1, wherein the non-slip material is made of fabric a including fiber A having a single fiber diameter of 10 to 10,000 nm and fiber B having a single fiber diameter larger than that of fiber A, and the fabric a is attached at a position 11 to 30 cm from the end of the duvet cover body.

3. 3. The duvet cover according to claim 2, wherein the fabric a is a pile fabric, the pile is made of fiber A, and the pile length of the pile is 2 mm or more.

4. The duvet cover according to claim 1 , wherein the non-slip material is arranged to be in contact with a duvet including a duvet cover material containing ultra-fine yarns having a single fiber fineness of 0.5 dtex or less.

5. A futon set comprising the futon cover according to any one of claims 1 to 4 and a futon including a futon cover material containing ultrafine yarns having a single fiber fineness of 0.5 dtex or less.

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