WO2024101412A1 - クッション材 - Google Patents

クッション材 Download PDF

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Publication number
WO2024101412A1
WO2024101412A1 PCT/JP2023/040332 JP2023040332W WO2024101412A1 WO 2024101412 A1 WO2024101412 A1 WO 2024101412A1 JP 2023040332 W JP2023040332 W JP 2023040332W WO 2024101412 A1 WO2024101412 A1 WO 2024101412A1
Authority
WO
WIPO (PCT)
Prior art keywords
foam layer
film
urethane foam
cushioning material
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/040332
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
康正 後藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inoac Corp
Original Assignee
Inoue MTP KK
Inoac Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Inoue MTP KK, Inoac Corp filed Critical Inoue MTP KK
Priority to JP2024557841A priority Critical patent/JPWO2024101412A1/ja
Publication of WO2024101412A1 publication Critical patent/WO2024101412A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/15—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays consisting of two or more layers

Definitions

  • This disclosure relates to cushioning materials.
  • Patent Document 1 discloses a washable cushioning material with a cover.
  • This cushioning material comprises low-resilience urethane foam and a membrane-free polyurethane foam that is placed on the low-resilience urethane foam and covered with a base fabric.
  • the membrane-free urethane foam described in this document corresponds to the membrane-free urethane foam of the present invention.
  • the cushioning material described in Patent Document 1 comprises a membrane-free polyurethane foam covered on a base fabric.
  • the membrane-free polyurethane foam covered on the base fabric is prone to slip on the low-resilience polyurethane foam.
  • the membrane-free polyurethane foam may slip upward, resulting in a poor sleeping experience.
  • mattresses are susceptible to lateral loads due to turning over in sleep, and the membrane-free polyurethane foam is prone to slip upward. The same problem occurs when the cushioning material is applied to a pillow.
  • the present disclosure provides a cushioning material that can reduce the slippage of membrane-free polyurethane foam.
  • the cushioning material includes a foam layer and a membrane-removing urethane foam layer that is in direct contact with the foam layer.
  • This disclosure provides a cushioning material that can reduce the upward slippage of film-removed polyurethane foam.
  • FIG. 2 is an exploded perspective view of a cushioning material according to an embodiment of the present disclosure.
  • FIG. 2 is a cross-sectional view of a core material of a cushioning material according to an embodiment of the present disclosure.
  • the cushioning material 1 includes a cover 2 and a core material 3 covered by the cover 2.
  • the cushioning material 1 is a mattress, but is not limited to this and may be a pillow or other cushioning material.
  • the cushioning material 1 may have dimensions corresponding to a bed.
  • the cushioning material 1 may correspond to a typical single-size bed and have a length of 1800 mm to 2250 mm and a width of 850 mm to 1000 mm.
  • the cover 2 may be a bag-like cover that contains the core material 3.
  • the bag-like cover may include an opening to allow the core material 3 to be inserted and removed, and a zipper to open and close the opening.
  • the cover 2 may include cotton, linen, wool, silk, polyester, rayon, nylon, acrylic, polyester, or other natural or synthetic fibers.
  • the core material 3 includes a foam layer 4 and a film-removing urethane foam layer 5 disposed on the foam layer 4.
  • the foam layer 4 supports the film-removing urethane foam layer 5.
  • the foam layer 4 may have a single-layer structure or a multi-layer structure.
  • the foam layer 4 includes a first foam layer 6 and a second foam layer 7 disposed on the first foam layer 6.
  • the first foam layer 6 has a thickness of 5 mm to 30 mm.
  • the second foam layer 7 has a thickness of 5 mm to 30 mm.
  • the film-removed urethane foam layer 5 may include a film-removed urethane foam.
  • urethane foam contains a countless number of cells in a urethane skeleton. These countless cells have membranes between adjacent cells.
  • the film-removed urethane foam refers to a urethane foam in which at least 50% of the membranes that define the cells are absent (film removal rate of at least 50%).
  • the film-removed urethane foam layer 5 is in direct contact with the foam layer 4.
  • the film-removed urethane foam layer 5 is porous and therefore has a surface that includes minute irregularities.
  • the foam layer 4 is also porous and therefore has a surface that includes minute irregularities. These minute irregularities provide a high coefficient of friction between the film-removed urethane foam layer 5 and the foam layer 4.
  • the film-removed urethane foam layer 5 does not easily slide on the foam layer 4, and therefore the film-removed urethane foam layer 5 is unlikely to shift from its correct position on the foam layer 4.
  • the film-removed urethane foam layer 5 is in direct contact with the foam layer 4.
  • the cushioning material 1 does not have a cover fabric (foreign matter) between the film-removed urethane foam layer 5 and the foam layer 4. Therefore, it is possible to provide superior cushioning properties compared to the cushioning material described in Patent Document 1.
  • the film-removed urethane foam layer 5 may be non-adhered to the foam layer 4. Such a film-removed urethane foam layer 5 can be removed from the foam layer 4 and washed separately.
  • the washable film-removed urethane foam layer 5 makes it possible to keep the cushioning material 1 clean.
  • the film-removed urethane foam layer 5 may be washable at home. To be washable at home, it is desirable that the layer can be placed in a home washing machine and dried in the shade within 24 hours.
  • the film-removing urethane foam layer 5 may have a film removal rate of 50% or more, preferably a film removal rate of 70% or more, and more preferably a film removal rate of 90% or more.
  • the film-removed urethane foam layer 5 may have a thickness of 30 mm or less, and more preferably, a thickness of 20 mm or less. Note that domestic washing machines generally have a smaller volume than commercial washing machines. The smaller the thickness of the film-removed urethane foam layer 5, the higher the possibility of it being suitable for domestic washing machines.
  • the film-removed urethane foam layer 5 may have a thickness of 5 mm or more, and more preferably, a thickness of 10 mm or more.
  • the film-removed urethane foam layer 5 may have a tensile strength of 50 kPa or more, or may have a tensile strength of 100 kPa or more. In this embodiment, the tensile strength of the film-removed urethane foam layer 5 is 103 kPa.
  • the foam layer 4 may have a first tensile strength, and the film-removed urethane foam layer 5 may have a second tensile strength greater than the first tensile strength.
  • the foam layer 4 may be a low-resilience urethane foam having a tensile strength of 50 to 60 kPa.
  • the foam layer 4 has a tensile strength of 54 kPa.
  • the film-removed urethane foam layer 5 may have an elongation rate of 50% or more, or may have an elongation rate of 100% or more. In this embodiment, the elongation rate of the film-removed urethane foam layer 5 is 280%.
  • the elongation rate is expressed as the ratio of a second length to a first length as follows.
  • the first length is the natural length of a test piece of the film-removed urethane foam.
  • the second length is the amount of elongation from the natural length of the test piece when the test piece is stretched until it breaks.
  • the foam layer 4 may be, for example, a low-resilience urethane foam having an elongation rate of 150%.
  • the foam layer 4 may have lower washability than the film-removed urethane foam layer 5 (first embodiment), or may have the same washability as the film-removed urethane foam layer 5 (second embodiment).
  • the foam layer 4 has lower washability than the film-removing urethane foam layer 5.
  • the first foam layer 6 may contain high-elasticity urethane foam
  • the second foam layer 7 may contain low-resilience urethane foam.
  • the first foam layer 6 may be formed so that its 40% compression hardness according to JIS 6400 is 20N to 800N, more preferably 40N to 300N.
  • the second foam layer 7 may be formed so that its 40% compression hardness according to JIS 6400 is 10N to 300N, more preferably 20N to 200N, and even more preferably 30N to 150N.
  • the second foam layer 7 may be in direct contact with the first foam layer 6 and may be adhered to the first foam layer 6.
  • the second foam layer 7 is fixed onto the first foam layer 6, which prevents the second foam layer 7 from shifting from its proper position on the first foam layer 6.
  • the foam layer 4 has the same washability as the film-removed urethane foam layer 5.
  • both the first foam layer 6 and the second foam layer 7 may contain film-removed urethane foam.
  • the second foam layer 7 may be in direct contact with the first foam layer 6 and not adhered to the first foam layer 6. Furthermore, the second foam layer 7 may be in direct contact with the film-removed urethane foam layer 5 and not adhered to the film-removed urethane foam layer 5. Since the second foam layer 7 does not easily slide on the first foam layer 6, the second foam layer 7 is unlikely to shift from its correct position on the first foam layer 6. Furthermore, the first foam layer 6, the second foam layer 7 and the film-removed urethane foam layer 5 can each be washed separately.
  • the first foam layer 6, the second foam layer 7, and the film-removing urethane foam layer 5 may each have a thickness of 5 mm or more and 20 mm or less.
  • the foam layer 4 has a two-layer structure, but this is not limited to this.
  • the foam layer 4 may have a three-layer structure or a multi-layer structure having more than three layers.
  • Cushioning material 2 Cover 3: Core material 4: Foam layer 5: Film-removing urethane foam layer 6: First foam layer 7: Second foam layer

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  • Laminated Bodies (AREA)
PCT/JP2023/040332 2022-11-10 2023-11-09 クッション材 Ceased WO2024101412A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2024557841A JPWO2024101412A1 (https=) 2022-11-10 2023-11-09

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-180569 2022-11-10
JP2022180569 2022-11-10

Publications (1)

Publication Number Publication Date
WO2024101412A1 true WO2024101412A1 (ja) 2024-05-16

Family

ID=91032466

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/040332 Ceased WO2024101412A1 (ja) 2022-11-10 2023-11-09 クッション材

Country Status (2)

Country Link
JP (1) JPWO2024101412A1 (https=)
WO (1) WO2024101412A1 (https=)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0619613U (ja) * 1992-03-25 1994-03-15 有限会社シンボリックアトリー 便益マットレス兼用カセットタイプ敷布団
JPH11318646A (ja) * 1998-05-14 1999-11-24 Fukutoku Shoji Kk マットレス
JP2000139653A (ja) * 1998-11-12 2000-05-23 Dream Sogo Kenkyusho:Kk 枕
KR20160076615A (ko) * 2014-12-23 2016-07-01 이명숙 침구용 매트리스
JP2018191734A (ja) * 2017-05-12 2018-12-06 株式会社ブリヂストン マットレス

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0619613U (ja) * 1992-03-25 1994-03-15 有限会社シンボリックアトリー 便益マットレス兼用カセットタイプ敷布団
JPH11318646A (ja) * 1998-05-14 1999-11-24 Fukutoku Shoji Kk マットレス
JP2000139653A (ja) * 1998-11-12 2000-05-23 Dream Sogo Kenkyusho:Kk 枕
KR20160076615A (ko) * 2014-12-23 2016-07-01 이명숙 침구용 매트리스
JP2018191734A (ja) * 2017-05-12 2018-12-06 株式会社ブリヂストン マットレス

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JPWO2024101412A1 (https=) 2024-05-16

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