Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47G—HOUSEHOLD OR TABLE EQUIPMENT
  • A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
  • A47G9/10—Pillows
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47G—HOUSEHOLD OR TABLE EQUIPMENT
  • A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
  • A47G9/10—Pillows
  • A47G2009/1018—Foam pillows

Definitions

• the present invention relates to a pillow made of a woven resin network structure.
• Patent Document 1 discloses a pillow made of an woven resin network structure, which is composed of an upper layer, a lower layer, and a middle layer in the height direction, the lower layer being harder than the upper layer and the middle layer being harder than the upper layer and softer than the lower layer, and at the boundary between the upper and middle layers, the woven resin of the upper layer and the woven resin of the middle layer are intertwined, and at the boundary between the middle and lower layers, the woven resin of the middle layer and the woven resin of the lower layer are intertwined, and is composed of a central region, end regions, and intermediate regions in the width direction, the end regions being harder than the central region and the intermediate regions being harder than the central region and softer than the end regions, and at the boundary between the central region and the intermediate region, the woven resin of the central region and the woven resin of the intermediate region are intertwined, and at the boundary between the intermediate between the intermediate
• the pillow of Patent Document 1 can more effectively improve the quality of sleep.
• people have different preferences for pillows. Therefore, an object of the present invention is to provide a pillow that more effectively improves the quality of sleep from a different perspective than the pillow of Patent Document 1.
• the pillow of the present invention described in claim 1 is characterized in that, in the width direction, it is composed of a first region 10 located in the center, a third region 30 located at both ends, and a second region 20 located between the first region 10 and the third region 30, and the thickness gradually increases from the center to the ends, the first region 10 is wider than the second region 20 and the third region 30, the second region 20 is wider than the third region 30, the third region 30 is harder than the first region 10, and the second region 20 is harder than the third region 30.
• the present invention described in claim 2 is characterized in that, in the pillow described in claim 1, it is made of an woven resin network structure in which multiple thread-like molten resins are entangled and partially heat-welded, and the second region 20 has a core 40 between one surface 2 and the other surface 3 which has a bulk density greater than that of the surrounding area.
• the present invention as set forth in claim 3 is characterized in that in the pillow as set forth in claim 2, in the second region 20, the distance H1 from one surface 2 to the core 40 is greater than the distance H2 from the other surface 3 to the core 40.
• the present invention described in claim 4 is characterized in that, in the pillow described in claim 2, the boundary portion between the other surface 3 and one end surface 6 and the other end surface 7 in the width direction is curved, and a gap ⁇ is created between the other surface 3 and the floor so that the user's hand can fit in.
• the present invention as set forth in claim 5 is characterized in that in the pillow as set forth in claim 2, the pillow is composed in the depth direction of a first depth region 50 located in the center, a third depth region 70 located at both ends, and a second depth region 60 located between the first depth region 50 and the third depth region 70 to support the user's neck, and the second depth region 60 is harder than the first depth region 50 and the third depth region 70, and the third depth region 70 is softer than the first depth region 50.
• the present invention described in claim 6 is characterized in that, in the pillow described in claim 2, the second region 20 consists of multiple small regions 21 of different hardness in the width direction, and among adjacent small regions 21, the one closer to the first region 10 is softer.
• the present invention as set forth in claim 7 is characterized in that in the pillow as set forth in claim 2, the core 40 of the second region 20 is locally provided with a hard portion 80 having a bulk density greater than that of the surrounding area.
• the present invention as set forth in claim 8 is characterized in that in the pillow as set forth in claim 2, a through hole 90 is formed in the core 40 of the second region 20 in the depth direction.
• the present invention as set forth in claim 9 is characterized in that, in the pillow as set forth in claim 8, a cooling material is provided to be inserted into the through-hole 90.
• the present invention as set forth in claim 10 is characterized in that in the pillow as set forth in claim 8, a cushioning material softer than the core 40 inserted into the through-hole 90 is provided.
• the present invention as set forth in claim 11 is characterized in that the pillow as set forth in claim 2 has a multi-layer structure of three or more layers with different hardness in the height direction, and the layers on one surface 2 and the other surface 3 are softer than the layers in the center in the height direction.
• the present invention provides a pillow that more effectively improves sleep quality.
• Schematic front view of a pillow according to a first embodiment of the present invention Schematic top view of the pillow Schematic front view of a pillow according to a second embodiment of the present invention. Schematic top view of the pillow Schematic front view of a pillow according to a third embodiment of the present invention. Schematic front view of a pillow according to a fourth embodiment of the present invention. Schematic front view of a pillow according to a fifth embodiment of the present invention.
• 1 is a diagram showing a pillow manufacturing apparatus according to an embodiment of the present invention
• the pillow according to the first embodiment of the present invention is composed, in the width direction, of a first region located in the center, a third region located at both ends, and a second region located between the first and third regions, and the thickness gradually increases from the center to the ends, with the first region being wider than the second and third regions, the second region being wider than the third region, the third region being harder than the first region, and the second region being harder than the third region. According to this embodiment, it is possible to encourage the user to turn over in their sleep and improve the quality of their sleep.
• a second embodiment of the present invention is a pillow according to the first embodiment, which is made up of a woven resin network structure in which a plurality of filamentous molten resin threads are entangled and partially heat-welded, and the second region has a core between one surface and the other surface which has a bulk density greater than that of the surrounding area. According to this embodiment, by making only the middle portion of the second region hard and the surface portion soft, it is possible to improve the cushioning effect when the user places his/her head on it.
• a third embodiment of the present invention is a pillow according to the second embodiment, wherein in the second region, the distance from one surface to the core is greater than the distance from the other surface to the core.
• the thickness of the soft layer from one surface to the core is large, which makes it easier for the user to roll over from the first region to the second region and allows the user to feel good cushioning even when the head is in the second region.
• the soft layer from the other surface to the core has a predetermined thickness, which eliminates the feeling of hitting the bottom of the pillow and increases the comfort of the user.
• the boundary portion between the other surface and one end face and the other end face in the width direction forms a curved shape, and a gap is created between the other surface and the floor so that the user's hand can fit in. According to this embodiment, the user can feel even more relaxed by putting his/her hands into the gap created between the pillow and the floor.
• a fifth embodiment of the present invention is a pillow according to the second embodiment, in which the depth direction is made up of a first depth region located in the center, third depth regions located at both ends, and a second depth region located between the first depth region and the third depth region and supporting the user's neck, the second depth region being harder than the first depth region and the third depth region, and the third depth region being softer than the first depth region. According to this embodiment, the neck and other parts of the user can be comfortably supported.
• the second region is made up of a plurality of small regions of different hardness in the width direction, and among adjacent small regions, the one closer to the first region is softer. According to this embodiment, the second region is relatively soft on the first region side and relatively hard on the third region side, making it easier for the user to turn over in bed.
• a seventh embodiment of the present invention is a pillow according to the second embodiment, wherein a hard portion having a bulk density greater than that of the surrounding area is locally provided in the core of the second region. According to this embodiment, by providing the hard portion, the second region, which is the hardest in the width direction, can be made a little harder without impairing the cushioning properties.
• An eighth embodiment of the present invention is the pillow according to the second embodiment, wherein a through hole is formed in the depth direction in the core of the second region.
• the through-holes formed in the core make the core appear as if it has a multi-layer structure with different hardnesses in the height direction (thickness direction), improving the cushioning of the second region, which is a relatively hard part.
• the through-holes improve breathability.
• a ninth embodiment of the present invention is the pillow according to the eighth embodiment, further comprising a cooling material inserted into the through-hole.
• the cooling material is placed in the pillow to cool the user's head and other parts, thereby improving discomfort during sleep in the summer.
• a tenth embodiment of the present invention is a pillow according to the eighth embodiment, which further comprises a cushioning material softer than the core inserted into the through-hole. According to this embodiment, the user can adjust the cushioning properties of the second region by inserting a cushioning material.
• An eleventh embodiment of the present invention is a pillow according to the second embodiment, which has a multi-layer structure of three or more layers with different hardness in the height direction, and the layers on one surface side and the other surface side are softer than the layer in the center in the height direction. According to this embodiment, it is possible to improve the comfort of the user when placing his/her head on the pillow.
• FIG. 1 is a schematic front view of a pillow according to a first embodiment
• FIG. 2 is a schematic top view of the pillow.
• the pillow of the first embodiment is made of a knitted resin network structure in which multiple filamentous molten resin threads are intertwined and partially heat-fused. Because the shape of the knitted network structure itself forms the shape of the pillow, the pillow can be used as is without a cover. While pillows are generally colorless, transparent, or white, some parts are colored or lined for illustrative purposes.
• the knitted resin network structure is formed by melt-kneading a thermoplastic resin at a predetermined temperature, allowing the molten resin to flow down in the form of threads, and then cooling the melted resin.
• the thermoplastic resin may be, for example, polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyvinyl acetate, polytetrafluoroethylene, or acrylonitrile butadiene styrene resin, and these may be used alone or in combination.
• a knitted resin network structure manufactured using a thermoplastic resin as a raw material can be recycled after use and reused as a raw material for knitted resin networks, etc. Furthermore, since the knitted resin network structure can be washed with water, etc., it is easy to keep the pillow clean.
• the pillow has a shape in which the thickness of the central portion in the width direction is smaller than the thickness of both end portions, and has gently sloping portions between the central portion and both end portions.
• the pillow has different hardness (resilience) in the width direction.
• the hardness of the first region 10 is about 40% of the hardness of the second region 20
• the hardness of the third region 30 is about 70% of the hardness of the second region 20.
• hardnesses are set by varying the bulk density of each region in whole or in part. Note that bulk density is calculated by weight (g) divided by volume (cm 3 ).
• the first region 10 extends from the center to halfway through the slope, the second region 20 extends from halfway through the slope to halfway through the edge, and the third region 30 is the remaining portion of the edge.
• the sizes of each region are different, with the first region 10 having the largest width, the second region 20 having the second largest width, and the third region 30 having the smallest width.
• the pillow can be used with one surface 2 facing up or the other surface 3 facing up.
• the pillow is gradually thicker from the center to both ends, and the hardest second region 20 is provided between the first region 10 and the third region 30 with a width smaller than that of the first region 10 and larger than that of the third region 30, making it easier for the user to turn over in bed and improving the quality of sleep.
• the pillow has better shape retention and cushioning properties than if the woven resin network structures formed in each region were simply lined up in the width direction.
• the second region 20 is harder than the first region 10 and the third region 30 because a core 40 having a higher bulk density than the surrounding areas is provided between the one surface 2 and the other surface 3.
• the bulk density around the core 40 is substantially the same as the bulk density of the first region 10.
• the second region 20 can be made harder than the first region 10 and the third region 30 by increasing the bulk density overall from the one surface 2 to the other surface 3, but by making only the middle portion harder and the surface portions softer, it is possible to improve cushioning when the user rests their head on it.
• the width of the core portion 40 may be set to be substantially equal to the width of the second region 20 as shown in FIG. 1 or may be set to be smaller than the width of the second region 20 .
• the distance H1 from one surface 2 to the core 40 be greater than the distance H2 from the other surface 3 to the core 40. Because the thickness of the soft layer from one surface 2 to the core 40 is large, a user using one surface 2 as the upper side can easily roll over from the first region 10 to the second region 20, and can also feel good cushioning even when the head is in the second region 20. Furthermore, when using the pillow with one surface 2 as the upper side, the other surface 3 comes into contact with the floor, but because the soft layer from the other surface 3 to the core 40 has a predetermined thickness, the user does not feel like they are hitting the bottom of the pillow, thereby increasing the comfort of the user.
• the boundary between the other surface 3 and one end surface 6 and the other end surface 7 in the width direction is curved, and when the one surface 2 is used with the pillow facing up, a gap ⁇ is created between the end of the bottom surface of the pillow (the other surface 3) and the floor, into which the user can insert their hand. By inserting their hand into the gap ⁇ created between the pillow and the floor, the user can feel even more relaxed. Furthermore, if the boundary between one surface 2 and the side surface is also curved in a similar manner, even when the other surface 3 is used with the pillow facing up, a gap ⁇ can be created between the end of the bottom surface of the pillow (one surface 2) and the floor so that the user can insert their hand.
• the pillow also has different hardness (resilience) in the depth direction.
• hardness when divided by hardness in the depth direction, as shown in Figure 2, there is a first depth region 50 located in the center and second softest, a third depth region 70 located at both ends and softest, and a second depth region 60 located between the first depth region 50 and the third depth region 70 and hardest.
• These hardnesses are set by providing differences in bulk density in the entirety or in parts of each region.
• the second depth region 60 serves as a neck support that supports the neck (cervical vertebrae) of the user.
• the second depth region 60, on which the user's neck rests, is harder than the first depth region 50, on which the user's head rests, and the third depth region 70, on which the user's shoulders rest, is softer than the first depth region 50, thereby providing comfortable support for the user's neck, etc.
• a user of the pillow can place his/her head on the pillow from one end surface 4 side in the depth direction or from the other end surface 5 side in the depth direction.
• the width of one second depth region (neck support portion) 61 on one end face 4 side in the depth direction is greater than the width of the other second depth region (neck support portion) 62 on the other end face 5 side. Because the width of the neck support portion 60 differs between the one end face 4 side and the other end face 5 side in the depth direction, the user can select the neck support portion 60 with the width they prefer and decide the direction in which to rest their head.
• the portions where the second depth region 60 and the third depth region 70 are provided may be formed into a rounded, raised shape to conform to the curvature of the user's neck. Such a shape can provide more appropriate support for the user's neck and improve comfort.
• FIG. 3 is a schematic front view of a pillow according to the second embodiment
• FIG. 4 is a schematic top view of the pillow.
• the second region 20 is made up of a plurality of small regions 21 of different hardness in the width direction, and among adjacent small regions 21, the one closer to the first region 10 is softer. Note that as long as the second region 20 as a whole is harder than the third region 30, some of the small regions 21 may be softer than the third region 21.
• Figures 3 and 4 show an example of the second region 20 made up of three small regions 21, it is also possible to form the second region 20 with two small regions 21 or four or more small regions 21. As in the second embodiment, by making the first region 10 side of the second region 20 relatively soft and the third region 30 side relatively hard, the user can turn over more easily.
• FIG. 5 is a schematic front view of a pillow according to a third embodiment.
• a plurality of hard portions 80 having a higher bulk density than the surrounding area are locally provided in the second region 20 from one end surface 4 to the other end surface 5 in the depth direction.
• FIG. 5 shows an example in which, in each second region 20, two hard portions 80 are provided in the core 40 portion, one in the portion between the core 40 and one surface 2, and one in the portion between the core 40 and the other surface 3; however, the number, position, size, etc.
• the hard portions 80 are not limited to this and can be set arbitrarily depending on the size of the pillow, etc. However, it is preferable to provide hard portions 80 both in the core 40 portion and in the portion other than the core 40. Furthermore, the second region 20 may be formed from a plurality of small regions 21, as in the second embodiment. By providing the hard portion 80 as in the third embodiment, the second region 20, which is the hardest in the width direction, can be made a little harder without impairing the cushioning properties. In addition, multiple hard portions 80 can be provided in the first region 10, in which case the pillow can be prevented from sinking too much when the head or the like is placed on the first region 10.
• FIG. 6 is a schematic front view of a pillow according to the fourth embodiment.
• a through hole 90 is formed in the core 40 in the second region 20 from one end surface 4 to the other end surface 5 in the depth direction.
• one through hole 90 is formed in each second region 20 in Fig. 6, it is also possible to provide a plurality of through holes 90 in each second region 20.
• the second region 20 may be formed from a plurality of small regions 21, as in the second embodiment.
• through-holes 90 in the core 40 as in the fourth embodiment, it appears as if the core 40 has a multi-layer structure with different hardness in the height direction (thickness direction), improving the cushioning properties of the pillow. In addition, by forming through-holes 90, breathability can be improved.
• a rod-shaped cooling material can also be inserted into the through-hole 90.
• the cooling material By inserting the cooling material, the user's head is cooled, which can improve the discomfort of sleeping in the summer.
• Cushioning material can also be inserted into the through-holes 90.
• the cushioning material is made of, for example, urethane and is softer than the core 40. The user can adjust the cushioning properties of the second region by inserting cushioning material into the through-holes 90. Note that if multiple types of cushioning material with different softness are prepared, it becomes possible to use different cushioning materials depending on one's physical condition or mood.
• the through-holes 90 can also be formed in the first region 10.
• the through-holes 90 are formed in the first region 10, it is as if the first region 10 has a multi-layer structure with different hardness in the height direction (thickness direction), improving the cushioning properties of the pillow.
• rod-shaped cooling material into the through-holes 90 formed in the first region 10 as described above, it is also possible to insert a core material that is harder than the surrounding area. If a core material is inserted, it is possible to prevent the first region 10 from sinking too much when the user places their head or other parts on it.
• FIG. 7 is a schematic front view of a pillow according to the fifth embodiment.
• the pillow of the fifth embodiment has a linear hard portion 100 having a bulk density greater than that of the surrounding area in the first region 10.
• the linear hard portion 100 extends from the core portion 40 on one end face 6 side to the core portion 40 on the other end face 7 side in the width direction, and extends from one end face 4 to the other end face 5 in the depth direction.
• the pillows of the first to fifth embodiments may also have a multi-layer structure in which the hardness varies in the height direction.
• the layers on one surface 2 and the other surface 3 are made softer than the layers in the center of the height direction. This improves the comfort of the user when they place their head on the pillow.
• the hardness (resilience) of each layer can be set, for example, by varying the bulk density of each layer or by varying the wire diameter of the knitted resin.
• FIG. 8 is a diagram showing a pillow manufacturing apparatus according to this embodiment.
• the pillow manufacturing apparatus according to this embodiment comprises an extruder 110 that melts and kneads thermoplastic resin at a predetermined temperature to form molten resin and extrudes the molten resin at a predetermined extrusion speed, a resin pool 130 that receives the molten resin extruded from the extruder 110 and causes the molten resin to flow down in threads from numerous holes (nozzles) in the bottom surface 131, a cooling water tank 140 that stores cooling water, and a take-up machine 150 that takes up knitted resin 121 formed by cooling the thread-like molten resin 120 that flows down from the resin pool 130 with the cooling water.
• an extruder 110 that melts and kneads thermoplastic resin at a predetermined temperature to form molten resin and extrudes the molten resin at a predetermined extrusion speed
• a resin pool 130 that receives the molten resin extruded from the ex
• the take-up machine 150 has a plurality of opposing take-up rollers 151 and is disposed within the cooling water tank 140.
• a guider 170 is provided between the resin pool 130 and the take-up machine 150.
• the filamentous molten resin 120 is formed as it flows down from the holes in the bottom surface 131 of the resin pool 130.
• the knitted resin 121 which is formed by cooling the filamentous molten resin 120 with cooling water, is drawn up by a drawer 150 to the bottom plate side of the cooling water tank 140. After passing through the drawer 150, the knitted resin 121 is drawn up diagonally upward while being cooled in the cooling water by a plurality of conveying rollers 160, which are drawing-up members, arranged in the cooling water tank 140, and conveyed out of the cooling water tank 140.
• the knitted resin network structure as a pillow is formed by cooling and cutting to a predetermined size.
• the direction perpendicular to the extrusion direction can be the width direction of the pillow.
• the second region 20 is made harder than the first region 10 and the second region 20 by providing a core 40, but the core 40 can be formed, for example, by increasing the number of holes provided in the bottom surface 131 of the resin pool 130 in the portion corresponding to the core 40 compared to other portions, or by making the diameter of the holes in the portion corresponding to the core 40 larger than in other portions.
• the second region 20 can be made harder than the first region 10 and the second region 20 by forming variations in density in a direction parallel to the extrusion direction. The density variation in the direction parallel to the extrusion direction is formed, for example, by changing the take-up speed of the take-up machine 150 at predetermined time intervals.
• the speed at which the take-up machine 150 takes up the knitted resin 121 is set to a first speed, a second speed slower than the first speed, and a third speed slower than the first speed but faster than the second speed.
• the portion of the knitted resin 121 taken up by the take-up machine 150 at the second speed has a higher bulk density than the portion taken up at the first speed, so the portion taken up at the first speed becomes the first region 10, which is a sparse portion with the lowest bulk density, the portion taken up at the second speed becomes the second region 20, which is a dense portion with the highest bulk density, and the portion taken up at the third speed becomes the third region 30, which is a portion with a bulk density intermediate between the first and second regions.
• the take-up speed by the take-up machine 150 is the third speed ⁇ the second speed ⁇ the first speed ⁇ the second speed ⁇ the third speed, it becomes possible to manufacture a pillow having the second region 20 between the first region 10 and the third region 30 in the direction parallel to the extrusion direction.
• the take-up time at the first speed the longest, the take-up time at the second speed the next longest, and the take-up time at the third speed the shortest, it is possible to make the widths of each region different. Note that if the second region 20 is subdivided to provide small regions 21, the take-up speed by the take-up machine 150 can be set by changing it even more finely.
• the pillow in the above example is made of a woven resin network structure in which multiple threads of molten resin are intertwined and partially heat-welded, but it is also possible to make the pillow out of other materials, such as urethane.

Landscapes

• Health & Medical Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Otolaryngology (AREA)
• Pulmonology (AREA)
• Bedding Items (AREA)

Priority Applications (4)

Applications Claiming Priority (1)

Publications (1)

Family

ID=93518269

Family Applications (1)

Country Status (4)

Citations (10)

• 2024
  • 2024-04-08 WO PCT/JP2024/014262 patent/WO2025215702A1/ja active Pending
  • 2024-04-08 JP JP2024534163A patent/JP7587905B1/ja active Active
  • 2024-04-08 CN CN202480004205.9A patent/CN121099937A/zh active Pending
  • 2024-04-08 KR KR1020257011921A patent/KR20250167560A/ko active Pending

Patent Citations (10)

Also Published As

Similar Documents

Legal Events