TWI575132B - 伸縮不織布及其製造方法 - Google Patents
伸縮不織布及其製造方法 Download PDFInfo
- Publication number
- TWI575132B TWI575132B TW100111047A TW100111047A TWI575132B TW I575132 B TWI575132 B TW I575132B TW 100111047 A TW100111047 A TW 100111047A TW 100111047 A TW100111047 A TW 100111047A TW I575132 B TWI575132 B TW I575132B
- Authority
- TW
- Taiwan
- Prior art keywords
- fiber
- fiber layer
- heat
- fibers
- bonding
- Prior art date
Links
Classifications
-
- 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/559—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving the fibres being within layered webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/18—Surface shaping of articles, e.g. embossing; Apparatus therefor by liberation of internal stresses, e.g. plastic memory
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/565—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits involving interference fits, e.g. force-fits or press-fits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/45—Joining of substantially the whole surface of the articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/729—Textile or other fibrous material made from plastics
- B29C66/7294—Non woven mats, e.g. felt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
- B29C66/7311—Thermal properties
- B29C66/73115—Melting point
- B29C66/73116—Melting point of different melting point, i.e. the melting point of one of the parts to be joined being different from the melting point of the other part
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
- B29C66/7371—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable
- B29C66/73715—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable heat-shrinkable
-
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/0076—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised in that the layers are not bonded on the totality of their surfaces
- B32B37/0084—Point bonding
-
- 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
- B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
- B29C61/02—Thermal shrinking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/02—2 layers
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/20—All layers being fibrous or filamentary
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0207—Elastomeric fibres
- B32B2262/0215—Thermoplastic elastomer fibers
-
- 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
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/10—Fibres of continuous length
- B32B2305/20—Fibres of continuous length in the form of a non-woven mat
-
- 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
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
- Y10T156/1043—Subsequent to assembly
-
- 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.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
- Y10T428/24322—Composite web or sheet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Nonwoven Fabrics (AREA)
- Laminated Bodies (AREA)
Description
本發明是關於一種具有伸縮性的不織布、其製造方法及使用該不織布的產品。更詳細而言,本發明是有關於一種不論縱向(Machine Direction,MD)及橫向(Cross Direction,CD)的方向,均可全方位地發揮其伸縮性的不織布。另外,本發明涉及一種呈現在不織布表面突起的凸構造,並加入了蓬鬆性、柔軟性、及通風性的不織布。
作為獲得具有伸縮性的不織布的方法,一般通過熔噴法在輸送帶上積層彈性體樹脂,然後利用熱輥進行黏合而形成薄片,但由於蓬鬆性非常低,因此通風性低且有損手感。另外,也存在因彈性體樹脂特有的摩擦而導致表面平滑性欠佳的問題。
另外,存在如下的方法,即利用噴射水流使由具有潛在捲縮的纖維所構成的網交纏,不織布化後進行熱處理而使其收縮,通過不織布的構造來賦予伸縮,但在此情況下,若水流交纏較強,則纖維彼此強烈地纏繞,因此在其後的收縮步驟中無法充分地賦予收縮,而有損伸縮性,相反地若交纏較弱,則存在可充分地賦予伸縮,但不織布強度顯著下降的問題。
作為其他製造方法,有如下的製造方法,即利用熱壓花輥使伸縮網與非收縮網兩層進行點黏合,其後通過加熱裝置使伸縮層收縮,由此賦予蓬鬆性與伸縮性。在此情況下,由於經壓花壓接的部分被膜化,因此存在通風性受損,且該部分的伸縮性也受損的問題。
另外,為使不織布具有足夠的強度,並具備蓬鬆性與柔軟性,而使用如下的點通風加工方式,該點通風加工方式是利用熱風通風加工方式,並使熱黏合性複合纖維網上混合存在有使熱風貫穿的區域與不接觸熱風的區域來進行加工的加工方式。如專利文獻4中所記載般,點通風不織布的加工方式是利用熱風加工機(抽吸帶式乾燥機)的加工方法。
[先前技術文獻]
[專利文獻]
[專利文獻1]日本專利特開2009-256856號公報
[專利文獻2]日本專利特開平10-114004號公報
[專利文獻3]日本專利特開2006-45724號公報
[專利文獻4]日本專利特開2001-3253號公報
為了解決所述問題點,本發明的目的在於提供一種表面具有凹凸的皺折,蓬鬆且柔軟性高,具有通風性,可不論MD及CD的方向而全方位地發揮伸縮性的伸縮性不織布。
本發明者等人為解決所述課題而反復努力研究的結果,發現如下的不織布解決所述課題,該不織布是對通過使兩層具有不同的收縮率的特定的網不壓接扁平化而部分地一體化所獲得的不織布進一步進行熱處理而獲得,本發明者等人基於該發現而完成了本發明。
本發明具有以下的構成。
1.一種伸縮性不織布,其特徵在於:在含有熱黏合性纖維的纖維層(1)的至少一面積層含有包含互不相同的樹脂成分的複合纖維的纖維層(2),在通過該熱黏合性纖維的熱黏合而部分地形成的熱黏合部,不使兩纖維層的纖維壓接扁平化而使兩纖維層一體化,且在該熱黏合部之間形成有纖維層(1)朝纖維層(1)側突出而成的凸狀構造。
2.根據前項1所述的伸縮性不織布,其中纖維層(2)含有可顯現螺旋捲縮的複合纖維,且通過由該複合纖維的螺旋捲縮所引起的複合纖維間的相互纏繞而形成。
3.根據前項1或2所述的伸縮性不織布,其中在熱黏合部之間,纖維層(1)通過構成纖維層(1)的熱黏合性纖維的熱熔接而使該熱黏合性纖維間的交點接合。
4.一種伸縮性不織布的製造方法,其特徵在於:在含有熱黏合性纖維的纖維層(1)的至少一面積層含有包含互不相同的樹脂成分的複合纖維的纖維層(2),在通過該熱黏合性纖維的熱黏合而部分地形成的熱黏合部,不使兩纖維層的纖維壓接扁平化而使兩纖維層一體化,且在熱黏合部之間使纖維層(1)朝纖維層(1)側突出來形成凸狀構造。
5.根據前項4所述的製造方法,其中通過點通風加工,不使兩纖維層的纖維壓接扁平化而利用熱黏合使兩纖維層部分地一體化。
基於上述,本發明的伸縮性不織布尤其表面具有凹凸的皺折,蓬鬆且柔軟性高,具有通風性,可不論MD及CD的方向而發揮伸縮性。
為讓本發明之上述特徵和優點能更明顯易懂,下文特舉實施例,並配合所附圖式作詳細說明如下。
本發明的伸縮性不織布是在含有熱黏合性纖維的纖維層(1)的至少一面積層含有包含互不相同的樹脂成分的複合纖維的纖維層(2),在通過該熱黏合性纖維的熱黏合而部分地形成的熱黏合部,不使兩纖維層的纖維壓接扁平化而使兩纖維層一體化,且在該熱黏合部之間形成有纖維層(1)朝纖維層(1)側突出而成的凸狀構造。
使用圖式來說明本發明的伸縮性不織布。圖1是熱收縮加工前的纖維層(1)與纖維層(2)的積層品的平面示意圖。另外,圖2是熱收縮加工前的纖維層(1)與纖維層(2)的積層品的剖面示意圖。在圖1及圖2中,3表示熱黏合部(熱黏合纖維彼此的交點黏合的部位),4表示熱黏合部之間(熱黏合纖維彼此的交點未黏合的部位)。在圖2中,1是熱收縮加工前的纖維層(1),2是熱收縮加工前的纖維層(2),X1-X1'是不織布的剖面部位。
圖3是熱收縮加工後的纖維層(1)與纖維層(2)的積層品的平面示意圖。圖4是熱收縮加工後的纖維層(1)與纖維層(2)的積層品的剖面示意圖。在圖3及圖4中,3是熱黏合部(熱黏合纖維彼此的交點黏合的部位),4'是熱收縮加工後的熱黏合部之間(凸狀構造形成部)。在圖4中,1'是熱收縮加工後的纖維層(1),2'是熱收縮加工後的纖維層(2),5是熱接合區域(纖維層(1)與纖維層(2)的介面中的熱接合面),X2-X2'是不織布的剖面部位,6是空間部。
圖5是熱收縮加工前的熱收縮加工前積層體的纖維層(1)與纖維層(2)不存在凸凹差的例的示意圖。圖6是熱收縮加工前的積層體的纖維層(1)與纖維層(2)略有凸凹差的例的示意圖。圖7是熱收縮加工後的積層體的纖維層(1)與纖維層(2)的凸凹差變得顯著的例的示意圖。
在本說明書中,所謂“熱黏合部”,是指通過使熱風穿過積層有兩纖維層的纖維網的任意的部分,而使構成纖維層(1)中所含有的熱黏合性纖維的低熔點成分熔融,由此構成纖維層(1)的纖維在該纖維彼此的交點或接觸部分等處黏合的部分,或者在纖維層(1)與纖維層(2)的介面,構成纖維層(1)的纖維與構成纖維層(2)的纖維在纖維彼此的交點或接觸部分等處接合的部分。
另外,所謂“不使兩纖維層的纖維壓接扁平化而使兩纖維層一體化”,是指在纖維層(1)及纖維層(2)的構成纖維保持纖維網的形態的狀態下,通過該纖維中所含有的低熔點成分的熔融或軟化,構成纖維層(1)的纖維在多個纖維交點等處黏合的狀態,或者在纖維層(1)與纖維層(2)的介面,構成纖維層(1)的纖維與構成纖維層(2)的纖維在纖維彼此的交點或接觸部分等處大量接合的狀態。即,表示未因熱壓花壓接而膜化的狀態。
所謂“熱黏合部之間”,是指熱黏合部以外的部分,表示纖維層(1)及纖維層(2)的構成纖維彼此未熱黏合的區域。
所謂“凸狀構造”,是指伴隨熱黏合性纖維熱黏合而形成熱黏合部,且在未形成熱黏合部的部分(熱黏合部之間)纖維層(2)收縮,通過纖維層(1)朝纖維層(1)側突出而形成的凸狀形狀的構造。
所述熱黏合部的狀態是與如下的狀態不同的狀態,該狀態是指通過如所述的先前技術中所存在的與熱壓花輥等的接觸來進行加熱、加壓,將其形狀扁平化,低熔點成分或高熔點成分熔融或軟化而導致纖維彼此壓接黏合的狀態。由此,本發明的伸縮性不織布蓬鬆且柔軟性高,具有通風性,可不論MD及CD的方向而發揮伸縮性。
當俯瞰時,在多數情況下,本發明的伸縮性不織布中所形成的熱黏合部規則地分佈,且具有固定的圖案。可以說不織布的厚度方向也存在相同的情況。在熱黏合部,熱黏合性纖維彼此的纖維交點熱黏合。
根據所使用的纖維的種類,也存在熱黏合性纖維與非熱黏合性纖維的纖維交點熱黏合的情況,也存在未熱黏合的情況。但是,為了維持作為不織布的強度,優選熱黏合部的纖維交點的大部分熱黏合。因此,優選對混入纖維層(1)中的非熱黏合性纖維的量加以限制。混入纖維層(1)中的非熱黏合性纖維的量優選未滿50品質%,更優選未滿30品質%。
本發明的伸縮性不織布的表面的熱接合區域的形狀依存於熱風通過含有熱黏合性纖維的纖維網的方法,並無特別限制,可為長方形及菱型等,但優選圓形。更優選以使不織布韌性提升的方式,在相對於纖維流動方向為直角方向上具有長徑的橢圓形狀。
本發明的伸縮性不織布的表面的熱黏合部的總面積率優選60%以下,更優選10%~40%。通過設定為該範圍,可維持不織布強度。
本發明的伸縮性不織布的表面的熱黏合部的大小必須考慮加工法,當該熱黏合部為圓形時,優選直徑為1 mm~4 mm左右。另外,其配置優選鋸齒狀,但並不限定於此。
凸狀構造的長度(以下,也稱為“凹凸厚度差”及“凹凸度”)是指圖5~圖7中的a與b的長度差(a-b)。凹凸厚度差是通過後述的實例的方法來測定。凹凸厚度差就設計性的觀點而言,並無特別限定,但就擴展、伸縮、手感的觀點而言,優選0.1 mm~5.0 mm,更優選0.3 mm~3.0 mm。
凹凸的比率(圖5~圖7中的a與b的比=a/b)就擴展、伸縮、手感的觀點而言,優選1.0~5.0,更優選1.5~3.5。
本發明的伸縮性纖維中的凸狀構造的個數並無特別限定,但至少在熱黏合部之間具有1個隆起。
本發明的伸縮性不織布的單位面積重量雖然也取決於構成纖維的纖維徑,但優選20 g/m2~200 g/m2,更優選30 g/m2~150 g/m2,進而更優選50 g/m2~100 g/m2。
通過將單位面積重量設定為20 g/m2以上,操作變得非常容易,且不織布的強度也提升,而成為富有實用性的不織布。另外,通過將單位面積重量設定為200 g/m2以下,不織布的構成纖維的密度降低,因此即便是熱黏合部之間的部分,對相互的纖維的影響減少,加工適應性也提升,柔軟性也提高。另外,當用於吸收性物品時,在低成本、輕量化方面也有效。
本發明的伸縮性不織布的厚度就擴展、伸縮、手感的觀點而言,優選1.0 mm~5.0 mm,更優選1.5 mm~4.0 mm,特別優選2.0 mm~3.0 mm。
[纖維層(1)]
纖維層(1)的收縮率優選成為比纖維層(2)的收縮率低優選30%以上,更優選50%以上的收縮率。收縮率可通過後述的實例的方法來測定。通過將纖維層(1)與纖維層(2)的收縮率的差(纖維層(2)的收縮率-纖維層(1)的收縮率)設定為30%以上,其後所形成的表面凹凸形狀較大,可增加不織布的體積,因此優選。
纖維層(1)中所含有的熱黏合性纖維優選螺旋捲縮的顯現性比構成纖維層(2)的複合纖維更差的潛在捲縮性複合纖維、或者不顯現螺旋捲縮的非潛在捲縮性複合纖維或單一成分纖維。由此,可將纖維層(1)的收縮率抑制成比纖維層(2)的收縮率低優選30%以上。
纖維層(1)中所含有的熱黏合性纖維優選潛在捲縮性複合纖維。若纖維層(1)中所含有的熱黏合性纖維為潛在捲縮性複合纖維,則纖維層(1)突出而形成的凸狀部除具有源自其凸狀構造本身的伸展性以外,也同時具有源自前處理加工步驟及/或收縮加工步驟中所顯現的螺旋捲縮的伸展性(擴展性),不織布的柔軟性、伸縮性可變得更佳。另外,可通過纖維層(1)的突出部的伸展性與纖維層(2)的螺旋捲縮的擴展性來對不織布賦予伸縮性。
作為用於纖維層(1)的熱黏合性纖維的樹脂,例如可列舉:聚烯烴、聚酯及聚醯胺等。構成纖維層(1)的熱黏合性纖維也可以是包含互不相同的樹脂成分的複合纖維。
作為纖維層(1)中所含有的熱黏合性纖維,優選低熔點成分與高熔點成分的組合。作為低熔點成分/高熔點成分,具體而言,可例示:聚乙烯/聚丙烯、聚丙烯共聚物/聚丙烯均聚物、以及聚乙烯/聚對苯二甲酸乙二酯,但並不限定於此。
聚乙烯包括:聚乙烯均聚物、乙烯與丙烯或其他烯烴的共聚物、以及乙烯與其他共聚成分的共聚物。另外,聚丙烯包括:聚丙烯均聚物、丙烯與乙烯或其他烯烴的共聚物、丙烯與其他成分的共聚物。另外,作為聚酯,例如可列舉:聚對苯二甲酸乙二酯及聚對苯二甲酸丁二酯、以及它們的共聚物。
優選低熔點成分的熔點比高熔點成分的熔點低10℃以上。尤其,在構成纖維層(1)的熱黏合性纖維為複合纖維的情況下,若該複合纖維的低熔點成分的熔點相應地較低,則當利用該低熔點成分的熱黏合性,在前處理加工中通過加熱使兩層熱黏合一體化時,只要以低溫進行加熱即可。由此,可使構成纖維層(2)的複合纖維的螺旋捲縮的顯現不活躍化。由此,纖維層(2)的收縮行為被抑制的結果,可確保對於在兩層間形成充分的熱黏合而言足夠的保持時間。由此,達成牢固的黏合一體化。
當纖維層(1)中所含有的熱黏合性纖維由低熔點成分與高熔點成分構成時,在與複合纖維的長度正交的方向上的纖維剖面中所占的容積比(低熔點成分/高熔點成分)優選10/90~90/10,更優選40/60~60/40。
另外,纖維層(1)中所含有的熱黏合性纖維優選至少其纖維表面含有彈性體成分作為構成成分。由此,纖維層(1)內的纖維彼此的接點、以及構成纖維層(1)的纖維與構成纖維層(2)的複合纖維的接點通過該彈性體成分而熱黏合。由此,其熱黏合點帶有彈性,並具有針對伴隨施加至不織布的張力等的變形的緩衝效果,結果不織布產生柔軟性、伸縮性,並且通過彈性體成分所具有的黏性而增強黏合點的黏合強度,結果層間的剝離強度也變高。
作為所述彈性體成分,例如可列舉:苯乙烯系彈性體、烯烴系彈性體、酯系彈性體及胺基甲酸酯系彈性體、以及它們的混合物等。
在不妨礙本案發明的效果的範圍內,也可以在纖維層(1)中混入木質纖維、天然纖維、人造纖維及醋酸纖維等化學纖維,以及聚酯、丙烯酸(聚丙烯腈系)及尼龍、聚氯乙烯等的合成纖維。
纖維層(1)中所使用的纖維的纖度優選1.0 dtex~11 dtex,更優選1.5 dtex~5.5 dtex。另外,纖維層(1)中所使用的纖維可為連續纖維(長纖維)及短纖維中的任一種,但優選短纖維。另外,纖維層(1)中所使用的纖維的纖維長優選10 mm~120 mm,更優選30 mm~60 mm。
為了容易地形成凸狀構造,有效的是降低纖維層(1)中所使用的纖維的纖維剛性,另外,在考慮不織布的柔軟性的情況下,較理想的是選擇纖度比較小者。
當纖維層(1)中所含有的纖維為複合纖維時,其剖面形狀並無特別限定,例如可列舉:同心芯鞘型、偏心芯鞘型及並列型等。其中,優選偏心芯鞘型及並列型,特別優選並列型。其原因在於:通過使用剖面形狀為並列型的複合纖維,可獲得高潛在捲縮性的纖維。
纖維層(1)的單位面積重量雖然也取決於構成纖維的纖維徑,但優選5 g/m2~30 g/m2,更優選10 g/m2~20 g/m2。
[纖維層(2)]
纖維層(2)是含有包含互不相同的樹脂成分的複合纖維的纖維層。該複合纖維優選可顯現螺旋捲縮的複合纖維,更優選潛在捲縮性複合纖維。
所述潛在捲縮性複合纖維優選在110℃的熱處理中顯現螺旋捲縮。伴隨該螺旋捲縮的顯現的纖維層(2)的表觀收縮率優選40%以上,更優選60%以上。
通過將所述收縮率設定為40%以上,可獲得足夠的收縮力,防止使纖維層(1)突出變得困難的情況。另外,螺旋捲縮的顯現變得充分,防止纖維層(2)的擴展性下降的情況。所述收縮率的上限並無特別限制,但通過將該上限設定成未滿80%,可獲得足夠的產品的尺寸穩定性。
作為用於纖維層(2)中所含有的複合纖維的樹脂,例如可列舉:聚烯烴、聚酯及聚醯胺等。
作為構成纖維層(2)中所含有的複合纖維的互不相同的樹脂成分,可例示低熔點成分與高熔點成分的組合。優選低熔點成分的熔點比高熔點成分的熔點低10℃以上。
作為低熔點成分/高熔點成分,具體而言,可例示:聚乙烯/聚丙烯、聚丙烯共聚物/聚丙烯均聚物、以及聚乙烯/聚對苯二甲酸乙二酯,但並不限定於此。
聚乙烯包括:聚乙烯均聚物、乙烯與丙烯或其他烯烴的共聚物、以及乙烯與其他共聚成分的共聚物。另外,聚丙烯包括:聚丙烯均聚物、丙烯與乙烯或其他烯烴的共聚物、丙烯與其他成分的共聚物。另外,作為聚酯,例如可列舉:聚對苯二甲酸乙二酯及聚對苯二甲酸丁二酯、以及它們的共聚物。
當纖維層(2)中所含有的複合纖維由低熔點成分與高熔點成分構成時,在與複合纖維的長度正交的方向上的纖維剖面中所占的容積比(低熔點成分/高熔點成分)優選10/90~90/10,更優選40/60~60/40。
纖維層(2)中所含有的複合纖維也可以含有彈性體成分。作為彈性體成分,例如可列舉:苯乙烯系彈性體、烯烴系彈性體、酯系彈性體及胺基甲酸酯系彈性體、以及它們的混合物等。
在不妨礙本案發明的效果的範圍內,也可以在纖維層(2)中混入木質纖維、天然纖維、人造纖維及醋酸纖維等化學纖維,以及聚酯、丙烯酸(聚丙烯腈系)及尼龍、聚氯乙烯等的合成纖維。
纖維層(2)中所使用的纖維的纖度優選1.0 dtex~11 dtex,更優選1.5 dtex~5.5 dtex。另外,纖維層(2)中所使用的纖維可為連續纖維(長纖維)及短纖維中的任一種,但優選短纖維。另外,纖維層(2)中所使用的纖維的纖維長優選10 mm~120 mm,更優選30 mm~60 mm。
作為纖維層(2)中所含有的複合纖維的剖面形狀,並無特別限定,例如可列舉:同心芯鞘型、偏心芯鞘型及並列型等。其中,優選偏心芯鞘型及並列型。其原因在於:通過使用剖面形狀為偏心芯鞘型及並列型的複合纖維,而顯現高螺旋捲縮性。
纖維層(2)的單位面積重量雖然也取決於構成纖維的纖維徑,但優選5 g/m2~50 g/m2,更優選10 g/m2~30 g/m2。
纖維層(2)與纖維層(1)的單位面積重量的比率優選60:40~10:90,更優選50:50~30:70。通過將纖維層(1)的比率設定為所述上限以下,伴隨纖維層(2)中所含有的纖維的螺旋捲縮的顯現,纖維層(2)充分地收縮,可使纖維層(1)充分地突出。另外,通過將纖維層(2)的比率設定為所述上限以下,可充分地維持產品的尺寸穩定性。
[製造方法]
本發明的伸縮性不織布是通過如下方式製造:在含有熱黏合性纖維的纖維層(1)的至少一面積層含有包含互不相同的樹脂成分的複合纖維的纖維層(2),不使兩纖維層的纖維壓接扁平化而通過熱黏合使兩纖維層部分地一體化,且在熱黏合部之間使纖維層(1)朝纖維層(1)側突出來形成凸狀構造。
具體而言,將含有可顯現螺旋捲縮的複合纖維的纖維層(2),以及含有與纖維層(2)中所含有的複合纖維相比,顯現螺旋捲縮的能力欠佳、或不顯現螺旋捲縮的熱黏合性纖維的纖維層(1)加以積層,不使兩纖維層壓接扁平化而使它們部分地黏合,由此使兩纖維層一體化(以下,有時記作“前處理加工”)。
進而,以所獲得的不織布的整個表面為對象再次進行熱處理,由此通過由纖維層(2)中所使用的纖維的螺旋捲縮的顯現所引起的收縮,在所述部分地形成的黏合部之間,纖維層(1)朝纖維層(1)側的不織布表面突出而形成凸狀(以下,有時記作“收縮加工”)。
(積層方法)
各纖維層優選以各自的構成纖維間未得到一體化處理的網的狀態積層。作為網化的方法,並無特別限定,例如可列舉:梳棉法及氣流成網法。就使凸部構造形成的觀點而言,優選梳棉法。
各纖維層中的纖維的分散狀態並無特別限定,纖維可以在一方向上排列,也可以無規地分散,但就不論MD及CD的方向而全方位地伸縮的觀點而言,優選無規地分散。
此處所述的“無規”表示形成網的纖維的排列,且是指纖維的排列性低者。當利用梳棉機的金屬線等進行梳棉時,一般也進行通過各輥的速度比來控制纖維的排列的無規性的步驟等,但由此種方法所獲得的纖維朝一方向的排列較鬆散的狀態也屬於本說明書中的“無規”的範疇。
當將兩纖維層加以積層時,兩層的纖維的排列狀態的關係並無特別限定,能夠以兩層的纖維均在大致相同方向上排列的方式積層,也能夠不以該方式積層。就不論MD及CD的方向而全方位地伸縮的觀點而言,優選以兩纖維層均無規地排列的方式積層。
(一體化方法)
作為前處理加工步驟的不使纖維層(1)與纖維層(2)壓接扁平化而使它們部分地一體化的方法,例如可列舉如下的方法等:在一般的熱風迴圈式通風裝置的搬送輸送帶與任意的實施過沖孔的不銹鋼帶(以下記作沖孔帶)之間夾持積層不織布,使熱風觸碰該積層不織布,且僅使熱風貫穿沖孔部分(開口部)(其後“成為熱黏合部的部位”),由此使兩層一體化。也可以使用實施過開孔的輥代替沖孔帶使熱風貫穿。
以下,有時將如所述般使用通風裝置所進行的前處理加工特別稱為“點通風加工”。另外,以下以進行點通風加工的情況為中心來介紹前處理加工步驟的具體的方法,但前處理加工並不限定於該點通風加工。
點通風加工實際上是以通過沖孔帶的開孔的熱風不鑽入沖孔帶的本體與不織布之間的程度,使沖孔帶密接於不織布來進行。此時,與沖孔帶密接的不織布的部位也能夠以該不織布中的纖維不扁平化的程度承受沖孔帶本體的自重、或者經由沖孔帶而承受擠壓。通過所述的自重或擠壓,也可以抑制點通風加工時的顯現構成纖維層(2)的纖維的捲縮的動作。
但是,並非通過點通風加工而完全地抑制構成熱風所觸碰的部位上的纖維層(2)的複合纖維的捲縮,可認為顯現非常弱的捲縮。
可認為通過纖維層(2)的所述捲縮,而形成纖維層(1)整體性地朝上方略微抬起的結果,在熱風被沖孔帶遮擋的部位(其後成為“形成熱接合區域間的區域”),在纖維層(1)與未顯現捲縮的纖維層(2)之間形成微小的空間部。
點通風加工優選在如下的溫度條件下實施,即纖維層(2)中所含有的複合纖維的螺旋捲縮的顯現不活躍,且該複合纖維的低熔點成分不熱熔融,而且在纖維層(1)中所含有的纖維中,形成該複合纖維的至少纖維表面的低熔點成分以可參與熱黏合的程度熔融或軟化的溫度。
若在纖維層(2)的低熔點成分熔融的溫度下進行點通風加工,則熱風所貫穿的部位,即點黏合的部分的熱熔融過度進行而變硬且有損手感。另外,纖維層(2)的收縮變大,不織布上產生裂紋,且質地紊亂。因此,選擇在如纖維層(2)的螺旋捲縮的顯現不活躍化的溫度下可參與熱黏合的成分作為纖維層(1)的低熔點成分變得重要。
作為纖維層(1)的低熔點成分,例如可列舉低密度聚乙烯(Low Density Polyethylene,LDPE)及線性低密度聚乙烯(Linear-Low Density Polyethylene,L-LDPE)等。纖維層(1)的低熔點成分的熔點優選70℃以上、125℃以下,更優選90℃以上、110℃以下。
作為纖維層(2)的低熔點成分,例如可較佳地列舉丙烯共聚物及乙烯共聚物,特別優選乙烯-丙烯共聚物。優選纖維層(2)的低熔點成分的熔點高於纖維層(1)的低熔點成分的熔點,更優選高10℃以上,且低熔點成分的熔點的溫度範圍優選120℃~150℃,更優選130℃~140℃。
(收縮加工)
在收縮加工中可使用一般的熱風迴圈式通風裝置。只要可獲得具有本案發明的構造的不織布,收縮加工中的加工溫度可高於點通風時的加工溫度,也可以與點通風時的加工溫度相同,另外,也可以低於點通風時的加工溫度。優選100℃以上、130℃以下的範圍。
在點通風加工後將熱風均等地吹附於不織布表面的整個面所進行的收縮加工步驟中,即便該熱風的溫度等同於或高於點通風加工時的熱風的溫度時,也不會看到所述點通風加工時熱風被遮擋的部位的纖維層(1)與纖維層(2)通過構成纖維層(1)的纖維的熱黏合而重新一體化的現象。
如上所述,可認為在點通風加工時,在所述熱風被遮擋的部位,被認為形成於該部位的纖維層(1)與纖維層(2)之間的空間部產生阻擋兩層的接觸的效果,並發揮阻止兩層的黏合一體化的功能。由此,點通風加工時熱風被遮擋的部位的纖維層(1)的纖維可採取獨立於纖維層(2)的動作。
其結果,可認為纖維層(1)的纖維若受到由伴隨纖維層(2)的纖維的較強的捲縮的顯現的纖維層(2)的收縮所引起的應力,則無法追隨該收縮,纖維層(1)的纖維間通過該纖維的黏合成分的熱熔融或熱軟化而黏合,並且獨立於纖維層(2),朝纖維層(1)側的不織布表面突出而形成凸狀。
另外,作為即便在收縮加工時的溫度條件等同於或高於點通風加工時的熱風的溫度的情況下,在點通風加工時熱風被遮擋的不織布的部位纖維層(1)與纖維層(2)也不熱黏合一體化的其他理由,也可以考慮如下的一個原因:由於收縮加工時的構成纖維層(2)的纖維的捲縮性足夠大,因此由纖維層(1)的纖維的熱熔融或熱軟化所引起的與構成纖維層(2)的複合纖維的熱黏合的形成追不上伴隨捲縮顯現的纖維層(2)的纖維的動作。
進而,也可以考慮如下的一個原因:當構成纖維層(1)的纖維為具有並列型構造的複合纖維時,不參與熱黏合的高熔點成分佔據纖維表面的有效量,整體上,可參與熱黏合的低熔點成分的參與熱黏合的機會減少,結果纖維層(1)與纖維層(2)的熱黏合點的絕對量減少。
點通風加工不使兩層的網壓接扁平化而使它們黏合,經過該方法所獲得的本發明的伸縮性不織布容易成為熱風所觸碰的部位與熱風被遮擋的部位的邊界上的熱黏合部與熱黏合部之間的黏合狀態的臨界較明確的不織布。
因此,在熱風被遮擋的部位,由收縮加工步驟中的纖維層(2)中所產生的收縮所引起的應力的傳播不會嚴重受損,而易於同樣地傳播至與熱風所觸碰的部位的臨界處為止。
而且,可認為在與熱風所觸碰的部位的臨界處,該應力的傳播被攔截的結果,應力傳播維持其勢頭而促使纖維層(1)的凸狀形成。因此,在其邊界部,存在凸狀構造以大角度立起的傾向,由此,尤其在用作鉤環扣構件的情況下,利用凸狀構造的懸掛較佳,而成為優選者。
另一方面,作為使相同的兩層一體化的方法,一般採用利用熱壓花加工的壓接方法,在該方法中,通過利用壓花輥的凸部的壓接,未受到壓接的部位(凸部)的纖維層在其與壓接部(經膜化的凹部)的邊界所形成的傾斜面上,因壓接力而被拉伸並以緊張狀態固定。另外,受到壓接的部位與未受到壓接的部位的邊界附近(特別是傾斜面)與壓接部中央相比,易於形成不完全的熱黏合狀態。
因此,可認為即便未受到壓接的部位的纖維層(2)在其後所實施的收縮步驟中收縮,由該收縮所引起的應力也被纖維層(1)的傾斜面上所存在的纖維的緊張緩和消耗、吸收,並且尤其因從非壓接部朝向壓接部的傾斜面的熱黏合狀況的緩慢的推移,而導致伴隨纖維層(2)的收縮的應力尤其在該傾斜面上分散。
因此,在非熱接合區域中,通過伴隨纖維層(2)的收縮的應力而形成於纖維層(1)側表面的纖維層(1)的凸部存在如下的傾向,即在熱壓接部的附近,基於不明確的起點而以緩和的角度立起。
因此,由於該構造,當用作鉤環扣構件時,不易懸掛,難以獲得充分的緊固性。另外,成為手感、物性與具備本發明所具有的伸縮性、柔軟性的不織布不同者。
另外,由於熱壓花加工部的纖維間空隙被破壞,因此不織布整體的通風度嚴重受損,但本發明的伸縮性不織布的熱黏合部由於纖維間僅在其交點處黏合,因此具有空隙未受損,可維持良好的通風度的特徵。
[實例]
以下,通過實例來詳細地說明本發明,但本發明並不限定於這些實例。
[測定方法]
各實例及比較例中所製造的伸縮性積層片是通過以下的測定方法來評價。
<收縮率測定法>(Ⅰ)纖維層(1)及纖維層(2)
測定熱處理前的樣品在MD方向上的3個部位(測定中央、兩端)的長度,並將其平均值作為(A)值。其次,在熱處理後也測定相同部位的長度,並將其平均值作為(B)值,通過以下的式求出收縮率。關於CD方向,也通過相同的測定方法求出收縮率。
收縮率(%)=((A)-(B))/(A)×100
(Ⅱ)不織布
將不織布切成25 cm×25 cm、面積625 cm2,算出熱處理後的該不織布的面積並將其作為(C)值,通過以下的式求出收縮率。
收縮率(%)=((625)-(C))/(625)×100
<擴展性、柔軟性評價法>
使用島津製作所製造的“Autograph AG500D”,將以試驗速度為100 m/min的速度從試樣長100 mm起擴展50%後,恢復至試樣長為止,然後再次擴展50%時的負荷分為初次與再次的兩點,測定擴展10%、20%、30%、40%、50%的強度,並製成以強度為縱軸且以歪曲為橫軸的圖表(S-S曲線)。
初次的負荷與再次的負荷的差越大,擴展性越低。另外,在擴展與負荷的圖表中,判斷為傾斜度越高,柔軟性越低。
<凹凸度評價法>
以通過不織布的凸部的中心的方式將其垂直地切斷,使用KEYENCE公司製造的數碼顯微鏡“VHX-900”觀察其剖面,並測定其凹部與凸部的厚度,針對凹部與凸部的厚度的差,求出10個部位的平均值。
[實例1]
使用包含熔點為160℃的聚丙烯與熔點為130℃的乙烯-丙烯共聚物的並列型複合纖維(容積比:50/50),並通過梳棉法來製成單位面積重量為10 g/m2的纖維層(2)。纖維層(2)的收縮率為70%。
使用包含熔點為160℃的聚丙烯與熔點為100℃的L-LDPE的同心芯鞘型複合纖維(容積比:50/50),並通過梳棉法來製成單位面積重量為10 g/m2的纖維層(1)。纖維層(1)的收縮率為5%。
以使各纖維層的機器方向成為相同方向的方式,在纖維層(2)上積層纖維層(1),從而製成雙層網。在所獲得的雙層網上載置直徑為3 mm的圓孔以間距為5 mm的間隔成鋸齒狀地開口的沖孔板(開孔率為32.6%),然後在熱風迴圈式通風機(Kotobuki Industry公司製造)中以120℃的加工溫度進行10秒鐘的點通風加工。此時的收縮率在MD上為7%,在CD上為3%。
接著,拆除沖孔板,再次在熱風迴圈式通風機中以120℃的加工溫度進行10秒鐘熱處理後,獲得收縮率為67%的伸縮不織布。將該伸縮性不織布的物性等示於表1。
[實例2]
使用包含熔點為160℃的聚丙烯與熔點為130℃的乙烯-丙烯共聚物的並列型複合纖維(容積比:50/50),並通過梳棉法來製成單位面積重量為20 g/m2的纖維層(2)。纖維層(2)的收縮率為70%。
通過梳棉法來製成在包含熔點為160℃的聚丙烯與熔點為100℃的L-LDPE的同心芯鞘型複合纖維(容積比:40/60)中混入有10%的人造纖維、且單位面積重量為10 g/m2的纖維層(1)。纖維層(1)的收縮率為0%。
以使各纖維層的機器方向成為相同方向的方式,在纖維層(2)上積層纖維層(1),從而製成雙層網。與實例1同樣地對所獲得的雙層網進行點通風加工。此時的收縮率在MD上為5%,在CD上為3%。
接著,拆除沖孔板,再次在熱風迴圈式通風機中以120℃的加工溫度進行10秒鐘熱處理後,獲得收縮率為62%的伸縮不織布。將所獲得的伸縮性不織布的物性等示於表1。
[比較例1]
使用包含熔點為160℃的聚丙烯與熔點為130℃的乙烯-丙烯共聚物的並列型複合纖維(容積比:50/50),並通過梳棉法來製成單位面積重量為10 g/m2的纖維層(2)。纖維層(2)的收縮率為70%。
使用包含熔點為160℃的聚丙烯與熔點為100℃的L-LDPE的同心芯鞘型複合纖維(容積比:50/50),並通過梳棉法來製成單位面積重量為10 g/m2的纖維層(1),纖維層(1)的收縮率為5%。
以使各纖維層的機器方向成為相同方向的方式,在纖維層(2)上積層纖維層(1),從而製成雙層網。通過面積率為15%的加熱壓花(加工溫度為95℃)來使該雙層網熱壓接而獲得不織布。該不織布的收縮率在MD上為40%,在CD上為26%。將所獲得的不織布的物性等示於表1。
[比較例2]
使用包含熔點為160℃的聚丙烯與熔點為130℃的乙烯-丙烯共聚物的並列型複合纖維(容積比:50/50),並通過梳棉法來製成單位面積重量為80 g/m2的網。通過噴水加工機(大昌鐵工公司製造)而使該網觸碰7.84 MPa的噴射水流並交纏後,利用120℃的熱風迴圈式通風機(Kotobuki Industry公司製造)進行乾燥、收縮處理而獲得不織布。該不織布的收縮率在MD上為22%,在CD上為9.4%。將所獲得的不織布的物性等示於表1。
如表1所示,通過點通風加工所製造的實例1及實例2的不織布在通過熱黏合性纖維的熱黏合而部分地形成的熱黏合部,不使兩纖維層的纖維壓接扁平化而使兩纖維層一體化,且纖維間僅在其交點處黏合,因此是柔軟性高,富有擴展性且手感較佳的不織布。另外,實例2的不織布通過混入人造纖維的效果,而成為顯示液體的吸收性的伸縮蓬鬆性的不織布。
另一方面,通過熱壓花加工所製造的比較例1的不織布的熱黏合部被壓接扁平化而受到破壞,通風度嚴重受損。另外,熱黏合部之間也因熱輥間空壁而受到破壞,而成為蓬鬆性、柔軟性均欠佳,且伸縮性較低者。另外,通過噴水加工所製造的比較例2的不織布利用噴射水流而使纖維交纏,由此兩纖維層的纖維通過互相纏繞而一體化,雖然柔軟性較佳,但蓬鬆性及伸縮性非常差。
[產業上的可利用性]
本發明的伸縮性不織布尤其表面具有凹凸的皺折,蓬鬆且柔軟性高,具有通風性,在MD、CD方向上均可賦予伸縮性,因此可用於例如繃帶、膏藥底布、鉤環扣的環材料等衛生材料領域,醫療領域,產業資材領域等。
雖然本發明已以實施例揭露如上,然其並非用以限定本發明,任何所屬技術領域中具有通常知識者,在不脫離本發明之精神和範圍內,當可作些許之更動與潤飾,故本發明之保護範圍當視後附之申請專利範圍所界定者為準。
1、2...熱收縮加工前的纖維層
1'、2'...熱收縮加工後的纖維層(1)
3...熱黏合部(熱黏合纖維彼此的交點黏合的部位)
4...熱黏合部之間(熱黏合纖維彼此的交點未黏合的部位)
4'...熱收縮加工後的熱黏合部之間(凸狀構造形成部)
5...熱接合區域(纖維層(1)與纖維層(2)的介面中的熱接合面)
6...空間部
a、b...長度
X1-X1'、X2-X2'...不織布的剖面部位
圖1是熱收縮加工前的纖維層(1)與纖維層(2)的積層體的平面示意圖。
圖2是熱收縮加工前的纖維層(1)與纖維層(2)的積層體的剖面示意圖。
圖3是熱收縮加工後的纖維層(1)與纖維層(2)的積層體的平面示意圖。
圖4是熱收縮加工後的纖維層(1)與纖維層(2)的積層體的剖面示意圖。
圖5是熱收縮加工前的積層體的纖維層(1)與纖維層(2)不存在凸凹差的例的剖面示意圖。
圖6是熱收縮加工前的積層體的纖維層(1)與纖維層(2)略有凸凹差的例的剖面示意圖。
圖7是熱收縮加工後的積層體的纖維層(1)與纖維層(2)的凸凹差變得顯著的例的剖面示意圖。
3...熱黏合部(熱黏合纖維彼此的交點黏合的部位)
4'...熱收縮加工後的熱黏合部之間(凸狀構造形成部)
5...熱接合區域(纖維層(1)與纖維層(2)的介面中的熱接合面)
6...空間部
a、b...長度
X2-X2'...不織布的剖面部位
Claims (5)
- 一種伸縮性不織布,其中,在含有熱黏合性纖維的纖維層(1)的至少一面積層含有包含互不相同的樹脂成分的複合纖維的纖維層(2),不使兩纖維層的纖維壓接扁平化的所述兩纖維層藉由所述熱黏合性纖維的熱黏合而部分地一體化,且藉由熱黏合而部分地形成的所述纖維層(1)的熱黏合部之間的所述纖維層(1)形成有突出所述纖維層(1)的表面的凸狀構造。
- 如申請專利範圍第1項所述之伸縮性不織布,其中所述纖維層(2)含有可顯現螺旋捲縮的所述複合纖維,且通過由所述複合纖維的螺旋捲縮所引起的所述複合纖維間的相互纏繞而形成。
- 如申請專利範圍第1項或第2項所述的伸縮性不織布,其中在所述熱黏合部之間,所述纖維層(1)通過構成所述纖維層(1)的所述熱黏合性纖維的熱熔接而使所述熱黏合性纖維間的交點接合。
- 一種伸縮性不織布的製造方法,其中,在含有熱黏合性纖維的纖維層(1)的至少一面積層含有包含互不相同的樹脂成分的複合纖維的纖維層(2),將不使兩纖維層的纖維壓接扁平化的所述兩纖維層藉由所述熱黏合性纖維的熱黏合而部分地一體化,且使藉由熱黏合而部分地形成的所述纖維層(1)的熱黏合部之間的所述纖維層(1)形成突出所述纖維層(1)表面的凸狀構造。
- 如申請專利範圍第4項所述之伸縮性不織布的製造 方法,其中通過點通風加工,不使所述兩纖維層的纖維壓接扁平化而利用所述熱黏合使所述兩纖維層部分地一體化。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010092577A JP5703586B2 (ja) | 2010-04-13 | 2010-04-13 | 伸縮不織布およびそれを用いた加工物品 |
Publications (2)
Publication Number | Publication Date |
---|---|
TW201134998A TW201134998A (en) | 2011-10-16 |
TWI575132B true TWI575132B (zh) | 2017-03-21 |
Family
ID=43919889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW100111047A TWI575132B (zh) | 2010-04-13 | 2011-03-30 | 伸縮不織布及其製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110250390A1 (zh) |
EP (1) | EP2384881B1 (zh) |
JP (1) | JP5703586B2 (zh) |
CN (1) | CN102233693B (zh) |
TW (1) | TWI575132B (zh) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5796336B2 (ja) * | 2011-04-28 | 2015-10-21 | Jnc株式会社 | 凹凸伸縮不織布 |
JP5961972B2 (ja) * | 2011-10-12 | 2016-08-03 | Jnc株式会社 | 伸縮性嵩高不織布およびその製造方法 |
JP6188306B2 (ja) | 2012-11-08 | 2017-08-30 | スリーエム イノベイティブ プロパティズ カンパニー | 不織布及び伸縮性積層体 |
JP6024915B2 (ja) * | 2013-03-28 | 2016-11-16 | Jnc株式会社 | 不織布およびそれを用いて得られた製品 |
JP6294726B2 (ja) * | 2014-03-27 | 2018-03-14 | 日本バイリーン株式会社 | 不織布及びその製造方法 |
KR102487678B1 (ko) | 2015-05-29 | 2023-01-11 | 주식회사 쿠라레 | 섬유 시트 |
WO2020131291A1 (en) | 2018-12-20 | 2020-06-25 | The Procter & Gamble Company | Bonded laminate including a formed nonwoven substrate |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002061192A1 (en) * | 2001-01-29 | 2002-08-08 | Mitsui Chemicals, Inc. | Non-woven fabrics of wind-shrink fiber and laminates thereof |
WO2006115251A1 (ja) * | 2005-04-25 | 2006-11-02 | Kao Corporation | 伸縮性不織布及びその製造方法 |
JP2009097133A (ja) * | 2007-09-28 | 2009-05-07 | Kuraray Kuraflex Co Ltd | 伸縮材及びその製造方法 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD267278A1 (de) * | 1987-12-24 | 1989-04-26 | Technotex Karl Marx Stadt Veb | Verfahren zur herstellung von vliesstoffen, die einen anteil thermoplastischer fasern aufweisen |
JP3247177B2 (ja) * | 1993-01-13 | 2002-01-15 | ユニチカ株式会社 | 生分解性潜在捲縮性複合短繊維及びその不織布 |
US5491016A (en) * | 1994-03-15 | 1996-02-13 | Fibertech Group, Inc. | Bulkable porous nonwoven fabric |
US5780155A (en) * | 1994-08-11 | 1998-07-14 | Chisso Corporation | Melt-adhesive composite fibers, process for producing the same, and fused fabric or surface material obtained therefrom |
JPH08260319A (ja) * | 1995-03-23 | 1996-10-08 | Mitsubishi Rayon Co Ltd | 伸縮性不織布及びその製造方法 |
US5814178A (en) * | 1995-06-30 | 1998-09-29 | Kimberly-Clark Worldwide, Inc. | Process for making a bulked fabric laminate |
JP3403589B2 (ja) | 1996-10-09 | 2003-05-06 | 大和紡績株式会社 | 嵩高性不織布及びその製造方法 |
US6066221A (en) * | 1997-06-17 | 2000-05-23 | Kimberly-Clark Worldwide, Inc. | Method of using zoned hot air knife |
US5964742A (en) * | 1997-09-15 | 1999-10-12 | Kimberly-Clark Worldwide, Inc. | Nonwoven bonding patterns producing fabrics with improved strength and abrasion resistance |
JP4206570B2 (ja) * | 1999-04-23 | 2009-01-14 | チッソ株式会社 | 不織布およびそれを用いた吸収性物品 |
JP3609361B2 (ja) * | 2000-10-12 | 2005-01-12 | 花王株式会社 | 立体シート材料 |
US7118639B2 (en) * | 2001-05-31 | 2006-10-10 | Kimberly-Clark Worldwide, Inc. | Structured material having apertures and method of producing the same |
US7201816B2 (en) * | 2001-12-21 | 2007-04-10 | Invista North America S.A.R.L. | High bulk composite sheets and method for preparing |
JP2005179843A (ja) * | 2003-12-22 | 2005-07-07 | Kao Corp | 繊維シート |
JP4212526B2 (ja) | 2004-08-05 | 2009-01-21 | 花王株式会社 | 立体シート材料 |
JP4747259B2 (ja) * | 2005-09-22 | 2011-08-17 | Jnc株式会社 | 嵩高柔軟性不織布及びそれを用いた繊維製品 |
EP2559796B1 (en) * | 2006-12-08 | 2014-09-10 | Unicharm Corporation | Stretchable nonwoven fabric, absorbent article and method of producing absorbent article |
JP2008144321A (ja) * | 2006-12-12 | 2008-06-26 | Kao Corp | 不織布 |
JP5201532B2 (ja) | 2008-03-19 | 2013-06-05 | Jnc株式会社 | 伸縮性積層シート |
KR100999875B1 (ko) | 2008-10-06 | 2010-12-09 | 주식회사 하이닉스반도체 | 버스트길이 제어회로 및 이를 이용한 반도체 메모리 장치 |
-
2010
- 2010-04-13 JP JP2010092577A patent/JP5703586B2/ja active Active
-
2011
- 2011-03-30 TW TW100111047A patent/TWI575132B/zh not_active IP Right Cessation
- 2011-03-30 CN CN201110083622.1A patent/CN102233693B/zh active Active
- 2011-03-30 EP EP11160390A patent/EP2384881B1/en not_active Not-in-force
- 2011-03-30 US US13/075,951 patent/US20110250390A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002061192A1 (en) * | 2001-01-29 | 2002-08-08 | Mitsui Chemicals, Inc. | Non-woven fabrics of wind-shrink fiber and laminates thereof |
WO2006115251A1 (ja) * | 2005-04-25 | 2006-11-02 | Kao Corporation | 伸縮性不織布及びその製造方法 |
JP2009097133A (ja) * | 2007-09-28 | 2009-05-07 | Kuraray Kuraflex Co Ltd | 伸縮材及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN102233693A (zh) | 2011-11-09 |
US20110250390A1 (en) | 2011-10-13 |
TW201134998A (en) | 2011-10-16 |
JP2011219900A (ja) | 2011-11-04 |
JP5703586B2 (ja) | 2015-04-22 |
EP2384881B1 (en) | 2012-08-22 |
CN102233693B (zh) | 2016-01-20 |
EP2384881A1 (en) | 2011-11-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI575132B (zh) | 伸縮不織布及其製造方法 | |
JP5694630B2 (ja) | ハイドロエンゴルジスパンメルト不織布 | |
TWI238708B (en) | Spun bonded type nonwoven fabric and material for use in sanitary goods | |
TWI600814B (zh) | 蓬鬆性不織布及其製造方法以及產品 | |
JP5006654B2 (ja) | 伸縮性不織布 | |
TW200813279A (en) | Nonwoven fabric | |
JP5019991B2 (ja) | スパンレース複合不織布の製造方法 | |
JPWO2010150611A1 (ja) | 表面凹凸構造を有する不織布及びそれを用いた製品 | |
JPH0525763A (ja) | 嵩高性シート及びその製造方法 | |
WO2001080680A1 (fr) | Non-tisse destine a etre utilise dans un element femelle d'une fixation a boucles et crochets et procede de fabrication associe | |
JP2007321289A (ja) | 伸縮性不織布 | |
JPH11107155A (ja) | 積層不織布及びそれを用いた吸収性物品 | |
JP2006281545A (ja) | 係止材用積層不織布 | |
JP4651573B2 (ja) | 伸縮性不織布 | |
JP2008106375A (ja) | 伸縮性不織布 | |
JP3968648B2 (ja) | 吸音材 | |
JP2011135985A (ja) | 使い捨ておむつ | |
KR102190133B1 (ko) | 부직포 및 이를 이용하여 얻어진 제품 | |
JP2003306858A (ja) | 熱収縮性不織布 | |
JP2008106377A (ja) | 伸縮性不織布 | |
JP2014240539A (ja) | 複合不織シートの製造方法 | |
JPH11285403A (ja) | 面ファスナ―雌材およびその製造方法 | |
JP7295495B2 (ja) | 複合繊維を含む不織布及びその製造方法 | |
JP2004261449A (ja) | ウェットワイパー用シート | |
JP6247921B2 (ja) | 伸縮シート |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |