Pillow cover

Abstract

To provide a pillow cover that can be used reversibly without a pillow user being able to distinguish whether the front or the back side is being used, and without causing any sense of discomfort.SOLUTION: A pillow cover 10 according to the present invention is formed by: folding a rectangular fabric in half, where both longitudinal ends of the fabric are triple-folded and sewn, one end being folded toward the front side of the fabric and the other end being folded toward the back side of the fabric, where the folded side is defined as a closed portion 11 and the side opposite to the closed portion is defined as an opening portion 12; and sewing both widthwise ends 13a, 13b, where two fabric layers overlap between the closed portion and the opening portion, together into a bag-like shape.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a pillow cover for covering a pillow body, and more particularly to a pillow cover suitable for use in facilities such as hotels and hospitals. [Background technology]

[0002] Generally, pillows are used with the pillow itself covered by a pillowcase, and for pillows used in facilities such as hotels and hospitals, the pillowcase is usually bag-shaped. After each use, the pillowcase is removed from the pillow, and only the pillowcase is washed and ironed at a cleaning company such as a linen factory. At the hotel, hospital, or other facility, the pillow is placed back into the pillowcase returned from the cleaning company such as a linen factory, completing the pillow, and the pillow is then placed on a bed, etc. During this series of processes, because the pillowcase is bag-shaped, the pillowcase removed from the pillow is in an inside-out state, which requires the extra work of either turning the pillowcase inside out at the cleaning company such as a linen factory and washing it, or washing it inside out and then turning it right side out at the hotel, hospital, or other facility.

[0003] Patent Document 1 shows a reversible pillowcase that is made by sewing together two pieces of cover fabric such as terry cloth or cotton, and can be attached to the pillow body with a string. It can be turned over and used twice, and by using fabrics with different qualities, colors, or patterns on the front and back, it can be used depending on the atmosphere at the time. However, this reversible pillowcase is not bag-shaped, and requires the time and effort of untying and tying the strings, making it unsuitable for pillows used in facilities such as hotels and hospitals where there are a large number of pillows and it is necessary to remove the pillowcase from the pillow and store the pillow body in the pillowcase each time it is used.

[0004] Furthermore, Patent Document 2 discloses a woven fabric that can be used for bedding covers such as pillowcases, without distinguishing between the design patterns on the front and back, but does not specifically disclose the configuration of the pillowcase itself.

[0005] Therefore, the present applicant invented a pillow cover disclosed in Patent Document 3. The pillow cover uses a fabric containing 30% or more polyester to prevent fraying of the fabric edges, and is a bag-shaped pillow cover consisting of front and back fabric sections cut by heat cutting to the same width, a closed section formed by one longitudinal end of the front and back fabric sections overlapping each other with the same width, side sections formed by sewing the left and right side edges of the front and back fabric sections together, and an opening formed by the other end of the front and back fabric sections facing the closed section, with the sewn sections at the left and right side edges of the side sections sewn together so that they do not rise above the surface of the fabric when the side sections are spread out. This configuration allows the pillow cover to be provided as a reversible pillow cover, so that the user of the pillow cannot tell whether it is being used on the front side or the back side, and does not feel any discomfort when using either side. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Full specification of Utility Model Application Publication No. 1-86870 [Patent Document 2] Japanese Patent Application Laid-Open No. 2007-31859 [Patent Document 3] Japanese Patent Application Laid-Open No. 2014-144076 Summary of the Invention [Problem to be solved by the invention]

[0007] However, the pillow cover described in Patent Document 3 uses fabric containing 30% or more polyester to prevent fraying at the edges of the fabric, and is cut by heat cutting, which increases manufacturing costs and has the disadvantage that if the polyester content is less than 30%, the edges will fray when washed.

[0008] Therefore, the inventors have conducted extensive research and developed a reversible pillow cover that does not require the use of heat-cutting of fabric containing 30% or more polyester to prevent fraying, and which allows the user of the pillow to use either the front or back side without feeling any discomfort, as they cannot tell whether they are using the front or back side. [Means for solving the problem]

[0009] The first pillow cover according to the present invention is a pillow cover that is triple-folded only at the top and bottom. That is, this pillow cover is characterized in that both longitudinal ends of a rectangular piece of fabric are triple-folded, with one end folded onto the front side of the fabric and triple-folded, and the other end folded onto the back side of the fabric and triple-folded. The pillow cover fabric is then folded in half, with the folded side forming a closure and the opposite side of the closure forming an opening. The two overlapping edges on both sides of the width between the closure and the opening are sewn together to form a bag shape. Triple-fold stitching, also known as triple-fold stitching, is a sewing method in which the edges of the fabric are folded over twice and sewn together to prevent fraying.

[0010] By configuring the first pillow cover as described above, whether the bag-shaped pillow cover is used with the front side up or inside out, the front side of one longitudinal end of the opening and the back side of the other end have the same shape, so the user cannot tell whether the pillow cover is being used with the front side up or inside out just by looking at the opening, and so a pillow cover can be provided that can be used reversibly without feeling uncomfortable.

[0011] The second pillow cover according to the present invention is a pillow cover that has three roll stitches on all four sides, but the stitching on both sides in the width direction is not limited. That is, this pillow cover is characterized in that both longitudinal ends of a rectangular piece of fabric are folded three times, one end around the front side of the fabric and sewn, and the other end around the back side of the fabric and sewn, and both width direction ends are folded three times, one end around the front side of the fabric and sewn, and the other end around the back side of the fabric and sewn, and the pillow cover fabric is then folded in half, with the folded side forming a closure and the opposite side of the closure forming an opening, and the two overlapping ends on both width directions between the closure and the opening are sewn together to form a bag shape.

[0012] By constructing the second pillow cover as described above, whether the bag-shaped pillow cover is used with the front side up or inside out, the front side of one longitudinal end of the opening and the back side of the other longitudinal end have the same shape, so the user cannot tell whether the pillow cover is being used with the front side up or inside out just by looking at the opening, and so a pillow cover can be provided that can be used reversibly without feeling uncomfortable.

[0013] A third pillow cover according to the present invention is a pillow cover that has all four sides sewn with three turns, folded in half, one side in the width direction sewn, and then turned inside out (flipped) and the other side sewn. That is, this pillow cover is characterized in that both longitudinal ends of a rectangular piece of fabric are folded with one end wrapped around the front side of the fabric and sewn with three turns, and the other end is wrapped around the back side of the fabric and sewn with three turns, and both widthwise ends are folded with one end wrapped around the front side of the fabric and sewn with three turns, and the other end is wrapped around the back side of the fabric and sewn with three turns, and then the pillow cover fabric is folded in half, the folded side forms a closure, and the opposite side of the closure forms an opening, and the ends of one side in the width direction between the closure and the opening are sewn together, and then the folded pillow cover fabric is turned inside out and the ends of the other side in the width direction between the closure and the opening are sewn together to form a bag shape.

[0014] By configuring the third pillow cover as described above, whether the bag-shaped pillow cover is used with the front side up or inside out, the front side of one longitudinal end of the opening and the back side of the other end have the same shape, and the front side of one widthwise end and the back side of the other end have the same shape.As a result, the user cannot tell whether the pillow cover is being used with the front side up or inside out just by looking at the opening or the widthwise end, and a pillow cover can be provided that can be used reversibly without feeling uncomfortable.

[0015] A fourth pillow cover according to the present invention is a pillow cover in which all four sides are triple-folded and both widthwise sides are twisted, i.e., both edges between the closure and the opening are sewn by overlapping the front side of one edge and the back side of the other edge. That is, this pillow cover is characterized in that both longitudinal ends of a rectangular piece of fabric are folded in half, with one end wrapped around the front side of the fabric and sewn with a triple fold, and the other end wrapped around the back side of the fabric and sewn with a triple fold, and both widthwise edges are folded in half, with one end wrapped around the front side of the fabric and sewn with a triple fold, and the other end wrapped around the back side of the fabric and sewn with a triple fold, and the pillow cover fabric is folded in half, with the folded side forming the closure and the side opposite the closure forming the opening, and the widthwise edges between the closure and the opening are sewn together by overlapping the front side of one edge and the back side of the other edge, and the widthwise edges on the folded sides are not sewn together, forming a bag-shaped seamless opening.

[0016] By configuring the fourth pillow cover as described above, whether the pouch-shaped pillow cover is used with the front side up or inside out, the front side of one longitudinal end of the opening and the back side of the other end have the same shape, and both widthwise ends have the same shape, so the user cannot tell whether the pillow cover is used with the front side up or inside out just by looking at the opening or the widthwise ends, making it possible to provide a pillow cover that can be used reversibly without feeling uncomfortable. Moreover, unlike the third pillow cover, there is no need to sew together the ends on one side between the closure and the opening, and then turn the folded pillow cover fabric inside out (turn it inside out), making the sewing process easier.

[0017] The fifth pillow cover of the present invention is a pillow cover in which all four sides are triple-stitched, a narrow piece of fabric (e.g., bias tape) is sewn along the length of both widthwise ends (preferably the center), and both widthwise ends are twisted, i.e., the both ends between the closure and the opening are sewn together by overlapping the front side of one end with the back side of the other end. In other words, the pillow cover has two longitudinal ends of a rectangular piece of fabric, one end of which is wrapped around the front side of the fabric and sewn with three turns, and the other end of which is wrapped around the back side of the fabric and sewn with three turns, and both widthwise ends of which are wrapped around the front side of the fabric and sewn with three turns, and the other end of which is wrapped around the back side of the fabric and sewn with three turns, and the pillow cover fabric is folded in half, with the folded side forming a closure and the opposite side of the closure forming an opening, and both widthwise ends between the closure and the opening are sewn together by overlapping the front side of one end and the back side of the other end, and both widthwise ends on the folded side are not sewn together to form a seamless opening, and the seamless opening is formed into a bag shape by sandwiching both widthwise ends between narrow pieces of fabric and sewing them together.

[0018] By constructing the fifth pillow cover as described above, whether the pouch-shaped pillow cover is used with the front side up or inside out, the front side of one longitudinal end of the opening and the back side of the other end have the same shape, and both widthwise edges have the same shape. This means that the user cannot tell whether the pillow cover is being used with the front side up or inside out just by looking at the opening or widthwise edges, making it possible to provide a pillow cover that can be used reversibly without feeling uncomfortable. Moreover, because both widthwise edges of the seamless opening are sandwiched and sewn with narrow cloth, both edges of the folded portion are reinforced by the narrow cloth. Furthermore, because both edges of the folded portion are not sewn, the difference between the front and back sides that would occur if they were sewn is not exposed, further improving the reversible effect.

[0019] The sixth pillow cover of the present invention is a pillow cover in which all four sides are triple-stitched, narrow cloth (for example, bias tape) is sewn along the length of both widthwise edges (the center is preferred in terms of design), and both widthwise edges are twisted, i.e., both edges between the closure and the opening are sewn together by overlapping the front side of one edge with the back side of the other edge, with the narrow cloth reaching over the sewn parts. In other words, this pillow cover is the fifth pillow cover, characterized in that the narrow cloth reaches over the sewn parts of both widthwise edges between the closure and the opening.

[0020] By constructing the sixth pillow cover as described above, in addition to the effects of the fifth pillow cover, the bag-shaped pillow cover has the advantage that the narrow cloth covers the seamless opening together with the sewn portion at both side ends of the unsewn folded portion, making both side ends of the folded portion stronger and improving their appearance.

[0021] The seventh pillow cover according to the present invention is a pillow cover that is sewn with a triple roll only at the top and bottom, and with a rolled seam on both sides of the width. That is, this pillow cover is characterized in that both longitudinal ends of a rectangular piece of fabric are folded in half, with one end wrapped around the front side of the fabric and sewn with a triple roll, and the other end wrapped around the back side of the fabric and sewn with a triple roll, with the pillow cover fabric then folded in half, the folded side forming a closure and the side opposite the closure forming an opening, with the overlapping ends of both widthwise ends between the closure and the opening sewn together with a rolled seam, and the widthwise ends of the folded side not being sewn together to form a seamless opening in the shape of a bag.

[0022] By configuring the seventh pillow cover as described above, whether the pillow cover is used inside out or on its front side, the front side of one longitudinal end of the opening and the back side of the other longitudinal end have the same shape, and both widthwise edges have the same shape. Therefore, a user cannot tell whether the pillow cover is used on its front side or inside out just by looking at the opening or widthwise edges, providing a reversible pillow cover that feels natural. Moreover, because both edges of the folded-back portion are not sewn, the difference between the front and back sides that would be visible if sewn is not visible, further improving the reversibility effect. Furthermore, because both widthwise edges are folded in half without triple-fold stitching, and then both widthwise edges between the closure portion and the opening are sewn together with a roll stitch, the pillow cover is thinner than a pillow cover with triple-fold stitching, providing a comfortable feel.

[0023] An eighth pillow cover according to the present invention is a pillow cover in which only the top and bottom are triple-folded and sewn, both widthwise sides are seamed with a rolled stitch, and narrow fabric (e.g., bias tape) is sewn along the longitudinal direction of both widthwise edge portions (the center is preferred in terms of design). That is, this pillow cover is characterized in that both longitudinal edge portions of a rectangular piece of fabric are triple-folded and sewn, with one edge wrapped around the front side of the fabric and the other edge wrapped around the back side of the fabric and sewn three times, and the pillow cover fabric is folded in half, with the folded side forming a closure and the opposite side of the closure forming an opening, with overlapping edges on both widthwise edges between the closure and the opening sewn together with a rolled stitch, and both widthwise edge portions on the folded side not sewn together to form a seamless opening, and the seamless opening is formed into a bag shape by sandwiching both widthwise edge portions between narrow fabrics and sewing them together.

[0024] By configuring the eighth pillow cover as described above, whether the pillow cover is used inside out or on its front side, the front side of one longitudinal end of the opening and the back side of the other longitudinal end have the same shape, and both widthwise edges have the same shape. Therefore, a user cannot tell whether the pillow cover is used on its front side or inside out just by looking at the opening or widthwise edges, resulting in a reversible pillow cover that feels natural. Moreover, because both widthwise edges of the seamless opening are sandwiched and sewn together with narrow cloth, both edges of the folded-over portion are reinforced by the narrow cloth. Furthermore, because both edges of the folded-over portion are not sewn, the difference between the front and back sides that would be visible if sewn is not exposed, further improving the reversible effect. Furthermore, because both widthwise edges are folded in half without triple-fold stitching, and then both edges between the closure portion and the opening are sewn together with a roll stitch, the pillow cover is thinner than a pillow cover with triple-fold stitching, resulting in a comfortable feel.

[0025] The ninth pillow cover according to the present invention is a pillow cover in which only the top and bottom are triple-wound sewn, the seams on both widthwise edges are rolled with a rolled stitch, and a narrow piece of cloth (e.g., bias tape) is sewn along the length of both widthwise edges (the center is preferred in terms of design), so that the narrow piece of cloth extends to the seams on both widthwise edges. In other words, this pillow cover is the eighth pillow cover, characterized in that the narrow piece of cloth extends to the seams on both widthwise edges between the closing part and the opening.

[0026] By constructing the ninth pillow cover as described above, in addition to the effects of the eighth pillow cover, the bag-shaped pillow cover has the advantage that the narrow cloth covers the seamless opening together with the sewn part at both side ends of the unsewn folded part, making both side ends of the folded part stronger and improving their appearance. [Effects of the Invention]

[0027] The pillow cover according to the present invention can be used reversibly, so that whether the front side or the back side is used, the user of the pillow cannot tell the difference and does not feel uncomfortable. Therefore, when removing the pillow body from the pillow cover and storing the removed pillow body back in the pillow cover, there is no need to turn the pillow cover inside out or inside out, which has the advantage of eliminating the hassle. [Brief explanation of the drawings]

[0028] [Figure 1] 1 is a perspective view showing a rectangular piece of fabric before sewing the pillow cover according to Example 1. FIG. [Figure 2] 2 is an explanatory diagram showing the folding direction when the top and bottom of the rectangular fabric in FIG. 1 are sewn in three turns. [Figure 3] FIG. 10 is an explanatory diagram showing the cross-sectional structure of a triple-wrap stitch. [Figure 4] FIG. 2 is a diagram showing the completed pillow cover of Example 1. [Figure 5] 1. FIG. 5 is an explanatory diagram showing the folding direction for triple-folding stitching on the four sides of the rectangular fabric of FIG. 1, regarding the pillow cover of Example 2. [Figure 6] FIG. 6 is a front view showing a state in which three-wrap stitching has been performed following the state shown in FIG. 5. [Figure 7] FIG. 7 is a perspective view showing the state in which the fabric after triple-wrap sewing in FIG. 6 is folded in half. [Figure 8] FIG. 8 is a perspective view showing the pillow cover according to Example 3, showing the state in which one end (left side in the drawing) in the width direction of the pillow cover fabric after being folded in half and triple-wrapped as shown in FIG. 7 has been sewn. [Figure 9] FIG. 9 is a perspective view showing the pillowcase fabric turned inside out from the state shown in FIG. 8. [Figure 10] FIG. 10 is a diagram showing the completed pillow cover of Example 3, in which the other end (left side in the drawing) in the width direction of the pillow cover fabric is sewn from the state of FIG. 9. [Figure 11]Regarding the pillow cover of Example 4, this is a schematic explanatory diagram of one (left) end in the width direction on the folded side of the pillow cover formed into a bag shape in the state of Figure 7 in Example 2, where both widthwise ends between the closing portion and the opening are sewn together by overlapping the front side of one end with the back side of the other end, and the widthwise both ends on the folded side are not sewn. [Figure 12] 12 is a perspective view showing the state of one end (left side) in the width direction of the folded-back side of FIG. 11. FIG. [Figure 13] This is a photograph of the state near one end (left side) of the folded side of the pillow cover in Figure 12 in the width direction, where (a) in the figure shows the front side and (b) shows the inside out. [Figure 14] FIG. 1 is a diagram showing the completed pillowcase of Example 4. [Figure 15] This is an explanatory diagram showing the pillow cover of Example 5, in which the ends on both sides in the width direction shown in Figure 6 are sewn together in three turns, and then a narrow cloth (bias tape) is sewn to the center in the longitudinal direction. [Figure 16] FIG. 10 is an explanatory diagram showing a cross-sectional structure for sewing narrow cloth. [Figure 17] 1. FIG. 3 is an explanatory view showing the folding direction when the rectangular fabric of FIG. 1 is folded and sewn three times at the top and bottom as shown in FIG. 2, in relation to the pillow cover of Example 7. [Figure 18] FIG. 10 is an explanatory diagram showing the cross-sectional structure of a wrap stitch. [Figure 19] FIG. 10 is a diagram showing the completed pillowcase of Example 7. [Figure 20] 1. FIG. 11 is an explanatory view showing the pillow cover according to Example 8, showing the folded direction in which the top and bottom are sewn in three turns from the state in FIG. 1, and the state in which a narrow cloth (bias tape) is sewn. [Figure 21] This is a photograph of the pillow cover of Example 8, taken near one end (left side) of the width direction of the folded side of the pillow cover, where (a) in the figure shows the front side and (b) shows the inside out. DETAILED DESCRIPTION OF THE INVENTION

[0029] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the pillow cover according to the present invention will be described in detail below with reference to the accompanying drawings. [Example]

[0030] Figures 1 to 4 are diagrams of a pillowcase 10 according to Example 1, and A in Figure 1 shows a rectangular piece of fabric before the pillowcase fabric is sewn. The rectangular piece of fabric is 228 cm long and 110 cm wide. The lengths of the rectangular piece of fabric in the long and wide directions can be adjusted as needed depending on the size of the pillow to be stored in the pillowcase. 100% cotton is preferred as the material, but is not limited to this.

[0031] As shown in Figure 2, the fabric A is triple-folded and sewn at both longitudinal ends to produce a pillowcase fabric. Triple-fold sewing is performed to prevent fraying at the ends, and as shown in Figure 3, the end is folded twice to prevent exposure, then tucked in and sewn. Then, as shown in Figure 2, one longitudinal end (top end) is folded twice to the inside and sewn. Next, the other longitudinal end (bottom end) is folded twice to the front and sewn in the opposite direction to the one end. When triple-folded, one side of the end has a step at the fold that is exposed and is usually the inside, while the other side has only a seam and is usually the outside. Therefore, by reversing the folding direction of the triple-fold sewing at both longitudinal ends as described above, the outside and inside have the same shape, eliminating the distinction between the outside and inside of one end and the other end.

[0032] After producing the pillowcase fabric in this way by folding and sewing both longitudinal ends of rectangular fabric A three times, the pillowcase fabric is folded in half longitudinally, and as shown in Figure 4, the folded side becomes the closing section 11, and the side opposite the closing section 11 becomes the opening 12. At the overlapping ends 13a, 13b on both sides of the width between the closing section 11 and the opening 12, the two overlapping ends 13a are sewn together while the two layers are overlapping, and the two overlapping ends 13b are sewn together while the two layers are overlapping, thereby forming a bag shape and completing the pillowcase 10 of Example 1. As an example of sewing the ends 13a, 13b on both sides of the width, overlocking the ends to prevent fraying may be performed, and the ends may be overlapped and sewn close to the ends, or the ends may be butted together and sewn.

[0033] The pillow cover 10 of Example 1 manufactured as described above has at least one end and the other end of the opening 12 that have the same shape whether it is used with the front side up or inside out, so that the user cannot tell whether it is being used with the front side up or inside out just by looking at the opening 12, making it a pillow cover that can be used reversibly without feeling strange. [Example]

[0034] Figures 5 to 7 are diagrams relating to a pillow cover according to Example 2, in which, for rectangular fabric A shown in Figure 1, at both longitudinal ends of rectangular fabric A, one end (top end) is wrapped around the underside of the fabric and sewn with a triple wrap, and the other end (bottom end) is wrapped around the front side of the fabric and sewn with a triple wrap, as shown in Figure 2. Then, at both widthwise end portions, one end (left end) is wrapped around the front side of the fabric and sewn with a triple wrap, and the other end (right end) is wrapped around the underside of the fabric and sewn with a triple wrap. Figure 6 shows a front view of pillow cover fabric B in which all four sides of rectangular fabric A are sewn with a triple wrap.

[0035] 7, pillow cover fabric B is folded in half, with the folded side forming the closing portion 21 and the side opposite the closing portion 21 forming the opening 22. Next, although not shown, the pillow cover of Example 2 is completed by sewing together both widthwise ends between the closing portion 21 and the opening 22 to form a bag shape. Regarding the sewing of both widthwise ends, since both side ends are triple-stitched, there is no need to prevent fraying, and both widthwise ends may be overlapped and sewn close to the ends, or the ends may be butted together and sewn.

[0036] The pillow cover of Example 2, created as described above, is similar to Example 1 in that one end and the other end of opening 22 have the same shape whether it is used with the front side up or inside out, so that the user cannot tell whether it is being used with the front side up or inside out just by looking at opening 22, making it a pillow cover that can be used reversibly without feeling strange. [Example]

[0037] 8 to 10 are diagrams relating to a pillow cover 30 according to Example 3. As explained in Example 2 with reference to FIGS. 5 to 7, after folding the pillow cover fabric B in half, the ends of one side in the width direction between the closing portion 21 and the opening 22, i.e., the end 30a on the left side in the figure, are overlapped or butted together and sewn together as shown in FIG. 8. When the pillow cover fabric B is turned inside out from this state, i.e., flipped over, and transformed into the state shown in FIG. 9, the end 30a sewn first becomes the right side in the figure. Then, in this state, the ends of the other side in the width direction between the closing portion 21 and the opening 22, i.e., the end 30b on the left side in the figure, are overlapped or butted together and sewn together to form a bag-like shape, and the pillow cover 30 of Example 3 shown in FIG. 10 is completed.

[0038] The pillow cover 30 of Example 3 manufactured as described above has the same shape in the opening 22 and both widthwise ends 30a, 30b whether it is used with the front side up or inside out, so that the user cannot tell whether it is being used with the front side up or inside out just by looking at the opening 22 and both widthwise ends 30a, 30b, making it a pillow cover that can be used reversibly without feeling uncomfortable.

[0039] Furthermore, when the widthwise ends are butted together and sewn, the seams at both widthwise ends 30a, 30b have the same shape, which has the advantage that it becomes even more difficult for the user to distinguish whether the garment is being used inside out or out just by looking at the opening 22 or both widthwise ends 30a, 30b. In this case, the both ends on the folded side are not sewn together, leaving a seamless opening. [Example]

[0040] 11 to 14 are diagrams relating to a pillow cover 40 according to Example 4. As explained in Example 2 with reference to FIGS. 5 to 7, after folding the pillow cover fabric B in half, as shown in FIGS. 11 to 13, the widthwise edges on both sides between the closure portion 21 and the opening 22 are sewn together by overlapping the front side 40a of one edge with the back side 40b of the other edge, i.e., by twisting the back side 40b of the other edge. Note that the widthwise edges on the folded side are not sewn, forming a seamless opening 40c. When sewn in this manner, a bag-like shape is formed, and the pillow cover 40 of Example 4 is completed as shown in FIG.

[0041] The pillow cover 40 made as described above has the same widthwise side edges whether used on the front side or inside out, as shown in Figures 13(a) and 13(b), so the user cannot tell whether it is used on the front side or inside out just by looking at the widthwise side edges as well as the opening, making it a reversible pillow cover that does not feel strange. Moreover, unlike the pillow cover 30 of Example 3, there is no need to sew together the edges on one side between the closure and the opening, and then turn the folded pillow cover fabric inside out, making the sewing process easier. [Example]

[0042] Example 5 is a modification of Example 4, and Figures 15 and 16 are diagrams related to the pillowcase of Example 5. As explained with reference to Figure 6 in Example 2, pillowcase fabric B is produced, and then, as shown in Figure 15, narrow cloths 51a and 51b are sewn to both widthwise end portions of pillowcase fabric B along the longitudinal direction to produce pillowcase fabric C. As shown in Figure 16, narrow cloths 51a and 51b are sewn to sandwich end fabrics 51c on both widthwise end portions of the pillowcase fabric. Bias tape is suitable for narrow cloths 51a and 51b. The location where narrow cloths 51a and 51b are sewn is preferably the longitudinal center of pillowcase fabric C, as this facilitates design and positioning and provides good workability, but this is not limited to this.

[0043] As described above, after the narrow fabrics 51a and 51b are sewn to the pillow cover fabric B of Example 2 to produce the pillow cover fabric C, the pillow cover of Example 5 is completed by sewing the ends on both sides of the width of the pillow cover fabric C together to form a bag, as explained in Example 4 with reference to Figures 11 to 14.

[0044] The pillow cover manufactured as described above has the same opening and widthwise side edges whether it is used front side or inside out, so the user cannot tell whether it is used front side or inside out just by looking at the opening and widthwise side edges, resulting in a reversible pillow cover that feels natural. Moreover, the longitudinal centers of the widthwise side edges are sandwiched and sewn between the narrow fabrics 51a and 51b, so the widthwise side edges of the folded portion are reinforced by the narrow fabrics 51a and 51b. Furthermore, the widthwise side edges of the folded portion are not sewn together to form a seamless opening, so the difference between the front and back sides due to the stitching is not exposed, further improving the reversible effect. [Example]

[0045] Example 6 is a modified example of Example 5, and although not shown in the figures, in this example, a narrow piece of cloth is provided along the longitudinal direction on both widthwise ends of the pillow cover fabric B shown in Example 5, and extends to the seams on both widthwise ends where the front side of one end and the back side of the other end are overlapped and sewn together between the closure portion and the opening.

[0046] The pillow cover produced as described above has the same effects as the pillow cover of Example 5, and has the advantage that the narrow fabric covers the unsewn opening together with the sewn portion at both widthwise ends of the unsewn folded portion, making both ends of the folded portion stronger and improving their appearance. [Example]

[0047] Example 7 is a modification of Example 1, and FIGS. 17 to 19 are diagrams relating to a pillowcase 70 of Example 7.

[0048] 1 to 4 in Example 1, and as shown in Fig. 17, a pillow cover fabric is produced by folding and sewing both longitudinal ends of rectangular fabric A three times, and then folding it in half to form a closed section 71 on the folded side, and an opening 72 on the opposite side of the closed section, and both widthwise ends between the closed section 71 and the opening 72 are sewn together by a roll stitch, and both widthwise ends on the folded side are not sewn to form a seamless opening 75, forming a bag shape. In Example 1, the method of sewing both widthwise ends together is not limited.

[0049] Figure 18 is an explanatory diagram of a roll stitch, in which one end 73 and the other end 74 on both sides in the width direction are folded in half and sewn together by meshing them together. That is, as shown in Figure 18, one end 73 and the other end 74 are folded in half, one end piece 73a of the folded in half is sandwiched between the folded-back part of the other, and the other end piece 74a of the folded in half is sandwiched between the folded-back part of the other, and the end pieces 73a, 74a are meshed together and sewn together. When sewn in this way, the front and back of the sewn part have the same shape, so this is a sewing method suitable for reversible sewing.

[0050] 19 is a diagram showing the completed pillow cover 70 of Example 7. As mentioned above, both widthwise edge portions of the folded side are not sewn to form seamless openings 75.

[0051] The pillow cover 70 manufactured as described above has the same opening 72 and widthwise side edges sewn with overlock stitching whether it is used inside out or outside out. This means that the user cannot tell whether it is used inside out or outside out just by looking at the opening 72 and widthwise side edges, resulting in a reversible pillow cover that feels natural. Moreover, the side edges of the folded portion are not sewn together to form a seamless opening 75, so the difference between the front and back sides that would be visible if sewn is not visible, further improving the reversibility. Furthermore, since the widthwise side edges are not triple-folded, the pillow cover fabric A is folded in half, and then the widthwise side edges between the closure portion 71 and the opening 72 are sewn together with overlock stitching. This results in a pillow cover that is thinner than a pillow cover with triple-fold stitching, providing a comfortable feel. [Example]

[0052] Example 8 is a modification of Example 7, and FIGS. 20 and 21 are diagrams relating to the pillowcase of Example 8.

[0053] In Example 8, as shown in FIG. 20, narrow cloth 81 is sewn along the longitudinal direction to both widthwise side edges of pillowcase fabric A described in Example 7 with reference to FIG. 17, and as shown in FIG. 21, narrow cloth 81 extends to the seams at both widthwise side edges sewn by the roll stitch between the closure portion and the opening. As shown in FIG. 16, narrow cloth 81 is sewn so as to sandwich the end fabric at both widthwise sides of the pillowcase fabric. Bias tape is suitable for the narrow cloth. Reference numeral 82 denotes a seamless opening where both side edges of the folded portion are not sewn. The location where narrow cloth 81 is sewn is preferably the longitudinal center of pillowcase fabric A because it is easy to design and position and has good workability, but is not limited thereto.

[0054] As described above, after the pillow cover fabric A of Example 7 is produced by sewing narrow fabric 81 to the pillow cover fabric A, the pillow cover of Example 8 is completed by sewing both widthwise ends of the pillow cover fabric A together to form a bag, as explained in Example 7 with reference to Figures 17 to 19. Also, as shown in Figures 21(a) and 21(b), the widthwise ends of both sides have almost the same shape whether they are used on the front side or inside out, making it difficult for the user to distinguish between using the front side or inside out.

[0055] The pillow cover produced as described above has the same effects as the pillow cover of Example 7, and also has the advantage that the narrow fabric covers the sewn portions as well as the non-stitched portions at both ends of the unstitched folded portion, making both ends of the folded portion stronger and improving their appearance.

[0056] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, as well as within the scope of the invention described in the claims and their equivalents. [Industrial Applicability]

[0057] The pillowcase according to the present invention can be used not only in facilities such as hotels and hospitals, but also at home. [Explanation of symbols]

[0058] 10. Pillowcase A. Rectangular piece of fabric 11...Occluded part 12 Opening 13a, 13b: Ends on both sides in the width direction B···· Pillowcase fabric 21...Occluded part 22 Opening 30···pillowcase 30a...end 30b...end 40···pillowcase 40a Front side of end 40b Back side of the end 40c...sutureless opening C···· Pillowcase fabric 51a,51b...Narrow cloth 51a·Edge fabric 70···pillowcase 71...Occluded part 72 Opening 73...One end 73a One end piece 74...other end 74a: The other end piece 75...Sutureless opening 81...Narrow cloth 82...Sutureless opening

Claims

1. The pillowcase fabric is folded in half, with one end of the rectangular fabric wrapped around the front side and sewn three times, and the other end of the pillowcase is wrapped around the back side and sewn three times. The folded side is a closed portion, and the opposite side of the closed portion is an opening portion, The pillow cover is characterized in that the two overlapping edges on both sides in the width direction between the closing portion and the opening are sewn together to form a bag shape.

2. One end of the rectangular fabric is wrapped around the front side of the fabric and sewn three times, and the other end is wrapped around the back side of the fabric and sewn three times, The pillowcase fabric is folded in half, with one end of the fabric wrapped around the front side and sewn three times, and the other end of the fabric wrapped around the back side and sewn three times. The folded side is a closed portion, and the opposite side of the closed portion is an opening portion, The pillow cover is characterized in that the two overlapping edges on both sides in the width direction between the closing portion and the opening are sewn together to form a bag shape.

3. One end of the rectangular fabric is wrapped around the front side of the fabric and sewn three times, and the other end is wrapped around the back side of the fabric and sewn three times, The pillowcase fabric is folded in half, with one end of the fabric wrapped around the front side and sewn three times, and the other end of the fabric wrapped around the back side and sewn three times. The folded side is a closed portion, and the opposite side of the closed portion is an opening portion, This pillow cover is characterized in that the ends of one side in the width direction between the closing portion and the opening are sewn together, and then the folded pillow cover fabric is turned inside out and the ends of the other side in the width direction between the closing portion and the opening are sewn together to form a bag shape.

4. One end of the rectangular fabric is wrapped around the front side of the fabric and sewn three times, and the other end is wrapped around the back side of the fabric and sewn three times, The pillowcase fabric is folded in half, with one end of the fabric wrapped around the front side and sewn three times, and the other end of the fabric wrapped around the back side and sewn three times. The folded side is a closed portion, and the opposite side of the closed portion is an opening portion, The pillow cover is characterized in that the widthwise ends on both sides between the closing portion and the opening are sewn together by overlapping the front side of one end with the back side of the other end, and the widthwise ends on both sides of the folded side are not sewn together and are formed into a bag-like shape as a seamless opening.

5. One end of the rectangular fabric is wrapped around the front side of the fabric and sewn three times, and the other end is wrapped around the back side of the fabric and sewn three times, The pillowcase fabric is folded in half, with one end of the fabric wrapped around the front side and sewn three times, and the other end of the fabric wrapped around the back side and sewn three times. The folded side is a closed portion, and the opposite side of the closed portion is an opening portion, The widthwise ends of both sides between the closing portion and the opening are sewn together by overlapping the front side of one end with the back side of the other end, and the widthwise ends of both sides on the folded-back side are not sewn together to form a seamless opening, The seamless opening is formed into a bag shape by sandwiching both widthwise ends of the pillow cover between narrow cloths and sewing them together.

6. 6. The pillow cover according to claim 5, wherein the narrow cloth extends to seams on both widthwise edges between the closing portion and the opening.

7. The pillowcase fabric is folded in half, with one end of the rectangular fabric wrapped around the front side and sewn three times, and the other end of the pillowcase is wrapped around the back side and sewn three times. The folded side is a closed portion, and the opposite side of the closed portion is an opening portion, The pillow cover is characterized in that the widthwise ends on both sides between the closing portion and the opening are sewn together with a roll stitch, and the widthwise ends on both sides of the folded side are not sewn together and are formed into a bag-like shape as a seamless opening.

8. The pillowcase fabric is folded in half, with one end of the rectangular fabric wrapped around the front side and sewn three times, and the other end of the pillowcase is wrapped around the back side and sewn three times. The folded side is a closed portion, and the opposite side of the closed portion is an opening portion, The overlapping ends of both widthwise ends between the closing portion and the opening are sewn together by a roll stitch, and the both widthwise ends of the folded-back side are not sewn together to form a seamless opening, The seamless opening is formed into a bag shape by sandwiching both widthwise ends of the pillow cover between narrow cloths and sewing them together.

9. 9. The pillow cover according to claim 8, wherein the narrow cloth extends to seams on both widthwise edges between the closing portion and the opening.

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