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JP2001011769A - 弾性伸縮性のシート - Google Patents

弾性伸縮性のシート

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Publication number
JP2001011769A
JP2001011769A JP11186786A JP18678699A JP2001011769A JP 2001011769 A JP2001011769 A JP 2001011769A JP 11186786 A JP11186786 A JP 11186786A JP 18678699 A JP18678699 A JP 18678699A JP 2001011769 A JP2001011769 A JP 2001011769A
Authority
JP
Japan
Prior art keywords
elastic
sheet
elastic member
elasticity
joined
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.)
Granted
Application number
JP11186786A
Other languages
English (en)
Other versions
JP3550054B2 (ja
Inventor
Yoshinobu Mishima
祥宜 三嶋
Yasushi Sayama
寧 佐山
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.)
Unicharm Corp
Original Assignee
Unicharm 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 Unicharm Corp filed Critical Unicharm Corp
Priority to JP18678699A priority Critical patent/JP3550054B2/ja
Priority to KR1020000035833A priority patent/KR100640027B1/ko
Priority to DE60015861T priority patent/DE60015861T2/de
Priority to TW089211159U priority patent/TW496293U/zh
Priority to EP00305449A priority patent/EP1065046B1/en
Priority to MYPI20003008A priority patent/MY120274A/en
Priority to US09/608,222 priority patent/US6468630B1/en
Priority to IDP20000549D priority patent/ID26455A/id
Priority to CNB001199110A priority patent/CN1175136C/zh
Publication of JP2001011769A publication Critical patent/JP2001011769A/ja
Application granted granted Critical
Publication of JP3550054B2 publication Critical patent/JP3550054B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/04—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a layer being specifically extensible by reason of its structure or arrangement, e.g. by reason of the chemical nature of the fibres or filaments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/05—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in another pattern, e.g. zig-zag, sinusoidal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/024—Woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2555/00—Personal care
    • B32B2555/02—Diapers or napkins
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities
    • Y10T428/24686—Pleats or otherwise parallel adjacent folds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities
    • Y10T428/24694—Parallel corrugations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3008—Woven fabric has an elastic quality
    • Y10T442/3024—Including elastic strand or strip
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/601—Nonwoven fabric has an elastic quality
    • Y10T442/602—Nonwoven fabric comprises an elastic strand or fiber material

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Nonwoven Fabrics (AREA)
  • Laminated Bodies (AREA)

Abstract

(57)【要約】 【課題】 互いに直交する二方向のうちの一方向にのみ
弾性伸縮性を有するシートに二方向への弾性伸縮性を付
与する。 【解決手段】 横方向に弾性伸縮性を有する平坦なシー
ト材料に、縦方向へ延び横方向で山６と谷７とが繰り返
す多数のひだを形成し、山６の頂部８に横方向への弾性
伸縮性を有する弾性糸４が接合する。

Description

【発明の詳細な説明】
【０００１】
【発明の属する技術分野】この発明は、縦方向と横方向
とに弾性伸縮性を有するシートに係わる。
【０００２】
【従来の技術】従来、伸縮性の弾性繊維からなるウェブ
を一方向へ連続的に供給し、これを加熱されたエンボス
ロールや高圧柱状水流で処理することにより、繊維を互
いに溶着させたり機械的に絡ませたりして肌触りのよい
不織布を得ることはよく知られている。かかる不織布
は、例えば使い捨ておむつや生理用ナプキン等の使い捨
て着用物品に使用される。
【０００３】
【発明が解決しようとする課題】かかる不織布は、ウェ
ブ製造工程やその後のウェブ処理工程で弾性繊維が機械
方向へ向かって並び易い、その結果、得られる不織布は
機械方向へ伸縮容易であるが、その方向と直交する方向
にはあまり伸縮しないということがある。
【０００４】そこでこの発明は、一方向へ弾性伸縮容易
であるが、その方向と直交する方向で弾性伸縮性に乏し
いシートをこれら両方向で弾性伸縮容易にすることを課
題にしている。
【０００５】
【課題を解決するための手段】前記課題解決のために、
この発明が対象とするのは、互いに直交する縦方向と横
方向とに弾性伸縮性を有するシートであり、この発明が
特徴とするところは、かかるシートにおいて、前記横方
向よりも前記縦方向へ弾性伸縮容易な平坦なシート材料
に、前記縦方向へ延び、前記横方向で山と谷とを繰り返
す多数のひだが形成され、前記ひだの複数の山の頂部外
側に前記横方向への伸縮性を有する弾性部材が接合して
いること、にある。
【０００６】かかる発明の好ましい実施態様において、
前記ひだの複数の谷の底部外側にも前記弾性部材が接合
している。
【０００７】実施態様の他の一つにおいて、前記弾性部
材が糸状のものであり、実施態様のさらに他の一つにお
いて、前記弾性部材が前記縦方向と横方向とに弾性伸縮
性を有するシート状のものである。
【０００８】
【発明の実施の形態】添付の図面を参照し、この発明に
係る弾性伸縮性のシートの詳細を説明すると、以下のと
おりである。
【０００９】図１、２は、平坦なシート材料１の斜視図
と、弾性伸縮性シート２の斜視図である。シート材料１
は、双頭矢印Ｙ方向へ弾性的に伸縮するが、双頭矢印Ｘ
方向へは伸縮しないか、伸縮するにしてもＹ方向ほどに
は容易に伸縮しないか、またはＸ方向へ非弾性的に伸長
する。かかるシート材料１には、例えばウレタン弾性糸
や捲縮した複合繊維等の伸縮性の糸がＹ方向へ強く配向
している不織布や織布がある。
【００１０】弾性伸縮性シート２は、シート材料１が折
曲されることによって形成されたひだ付きシート３と、
複数条の弾性糸４とを有する。シート材料１は、矢印Ｙ
方向へひだの山６と谷７とが延び、矢印Ｘ方向でそれら
の山６と谷７との起伏が繰り返されるように折曲されて
いる。弾性糸４は、矢印Ｘ方向へ直線的に延び、伸長状
態または非伸長状態でひだ付きシート３の山６の頂部８
に接合している。
【００１１】弾性糸４には、例えば天然ゴムや合成ゴ
ム、プラスチックエラストマー等からなるものがあり、
かかる糸４は、ホットメルト接着剤等の接着剤によって
頂部８に接合する。弾性糸４として、弾性伸縮性を有す
るゴム系のホットメルト接着剤を使用することもでき
る。糸状に延びるホットメルト接着剤は、それが溶融な
いし半溶融状態にあるときに頂部８に接合して弾性糸４
を形成する。
【００１２】このような弾性伸縮性シート２は、矢印Ｙ
方向へ引張られると、ひだ付きシート３が弾性的に伸長
する。また、矢印Ｘ方向へ引張られると、ひだ付きシー
ト３のひだが伸びると同時に弾性糸４が弾性的に伸び
る。それゆえ、弾性伸縮性シート２は、Ｙ方向とＸ方向
とに弾性的に伸縮する。複数条の弾性糸４の伸長応力が
ひだ付きシート３を矢印Ｙ方向へ引張るときの伸長応力
とほぼ等しくなるように弾性糸４の材料と形状と本数と
を選んだ弾性伸縮性シート２は、Ｙ方向とＸ方向とに同
じように弾性伸縮容易になる。弾性伸縮性シート２は，
比較的低コストで製造可能なもので、使い捨ておむつな
どの使い捨て着用物品の弾性部材として使用するのに好
適である。
【００１３】図３は、この発明の実施態様の一例を示す
図２と同様な図面である。この弾性伸縮性シート２で
は、複数条の弾性糸４が螺旋を画いている。
【００１４】図４もまた、この発明の実施態様の一例を
示す図２と同様な図面である。この弾性伸縮性シート２
では、Ｘ方向へ直線的に延びる弾性糸４が山６の頂部８
に外側から（図の上方から）接合している他に、谷７の
底部９に外側から（図の下方から）接合している。
【００１５】図５もまた、この発明の実施態様の一例を
示す図２と同様な図面である。この弾性伸縮性シート２
では、重なり合う２枚のひだ付きシート３，３の間に矢
印Ｙ方向とＸ方向とに弾性伸縮性を有する弾性シート１
４が介在している。弾性シート１４は、上方のひだ付き
シート３の底部９と、下方のひだ付きシート３の頂部８
とにホットメルト接着剤（図示せず）を介して接合して
いる。この図示例のように、図２〜４の弾性糸４は、弾
性シート１４に代えることができる。
【００１６】この発明において，ひだ付きシート３には
表裏の区別がなく，ひだの山部６というところをひだの
谷部７と言い換えても実質的に意味するところは変わら
ない。
【００１７】
【発明の効果】この発明によれば、一方向にのみ弾性伸
縮容易なシート材料が、この方向と直交するもう一方の
方向へも弾性伸縮容易になる。
【図面の簡単な説明】
【図１】シート材料の斜視図。
【図２】弾性伸縮性シートの斜視図。
【図３】発明の実施態様の一例を示す図２と同様の図
面。
【図４】実施態様の他の一例を示す図２と同様の図面。
【図５】実施態様のさらに他の一例を示す図２と同様の
図面。
【符号の説明】
１ シート材料 ２ 弾性伸縮性シート ４ 弾性部材（弾性糸） ６ 山 ７ 谷 ８ 頂部 ９ 底 １４ 弾性部材（弾性シート）
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3B029 BB02 BB06 4C003 BA01 BA08 4L047 AA25 AA26 AA27 BA12 BD02 CA03 CA12 CA18 CB01 CC04 CC05

Claims (4)

    【特許請求の範囲】
  1. 【請求項１】 互いに直交する縦方向と横方向とに弾性
    伸縮性を有するシートにおいて、 前記横方向よりも前記縦方向へ弾性伸縮容易な平坦なシ
    ート材料に、前記縦方向へ延び、前記横方向で山と谷と
    を繰り返す多数のひだが形成され、前記ひだの複数の山
    の頂部外側に前記横方向への伸縮性を有する弾性部材が
    接合していることを特徴とする前記シート。
  2. 【請求項２】 前記ひだの複数の谷の底部外側にも前記
    弾性部材が接合している請求項１記載のシート。
  3. 【請求項３】 前記弾性部材が糸状のものである請求項
    １または２記載のシート。
  4. 【請求項４】 前記弾性部材が前記縦方向と横方向とに
    弾性伸縮性を有するシート状のものである請求項１また
    は２記載のシート。
JP18678699A 1999-06-30 1999-06-30 弾性伸縮性のシート Expired - Fee Related JP3550054B2 (ja)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP18678699A JP3550054B2 (ja) 1999-06-30 1999-06-30 弾性伸縮性のシート
KR1020000035833A KR100640027B1 (ko) 1999-06-30 2000-06-28 탄성 신축성 시이트
TW089211159U TW496293U (en) 1999-06-30 2000-06-29 Elastically stretchable sheet
EP00305449A EP1065046B1 (en) 1999-06-30 2000-06-29 Elastically stretchable sheet
DE60015861T DE60015861T2 (de) 1999-06-30 2000-06-29 Elastisch dehnbare Folie
MYPI20003008A MY120274A (en) 1999-06-30 2000-06-30 Elastically stretchable sheet
US09/608,222 US6468630B1 (en) 1999-06-30 2000-06-30 Elastically stretchable sheet
IDP20000549D ID26455A (id) 1999-06-30 2000-06-30 Lembaran yang dapat diregangkan secara elastis
CNB001199110A CN1175136C (zh) 1999-06-30 2000-06-30 弹性伸缩性片

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DE60015861T2 (de) 2005-11-24
DE60015861D1 (de) 2004-12-23
CN1290776A (zh) 2001-04-11
ID26455A (id) 2001-01-04
TW496293U (en) 2002-07-21
MY120274A (en) 2005-09-30
EP1065046A1 (en) 2001-01-03
US6468630B1 (en) 2002-10-22
JP3550054B2 (ja) 2004-08-04

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