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CN100398306C - Bio-degradable copolyester nonwoven fabric - Google Patents

Bio-degradable copolyester nonwoven fabric Download PDF

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Publication number
CN100398306C
CN100398306C CNB018196322A CN01819632A CN100398306C CN 100398306 C CN100398306 C CN 100398306C CN B018196322 A CNB018196322 A CN B018196322A CN 01819632 A CN01819632 A CN 01819632A CN 100398306 C CN100398306 C CN 100398306C
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CN
China
Prior art keywords
nonwoven fabric
acid
cloth
spun
spinneret
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Expired - Fee Related
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CNB018196322A
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Chinese (zh)
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CN1478015A (en
Inventor
卢福民
W·A·黑尔
M·E·廷谢尔
W·S·哈里斯
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Ason Engineering Inc
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Ason Engineering Inc
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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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
    • D01F6/84—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyesters
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • 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
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/009—Condensation or reaction polymers
    • D04H3/011—Polyesters
    • 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
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Artificial Filaments (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Materials For Medical Uses (AREA)

Abstract

A nonwoven fabric produced using an aliphatic copolyester as the filament material in a meltspinning process and apparatus including a filament extruder, spinneret and drawing unit having the capability of high velocity filament production. The fabric produced is biodegradable, soft, highly drapeable and has elastic properties. The degree of elasticity may be adjusted by varying filament production conditions and bonding parameters.

Description

The copolyester nonwoven fabric of bio-degradable
Invention field
The present invention is the non-weaving cloth of relevant a kind of improvement, and as spun-bonded non-woven, this cloth has unique combination property, is nylon, polyester, and the non-weaving cloth that polypropylene or other polymer are done can't be obtained.The contained non-weaving cloth of the present invention is in a kind of spunbond technical process, produces with extruding with the method for drawn fiber.This non-weaving cloth is made by a kind of fatty family-aromatic copolyester material, non-woven unusual excellent drapability, wrinkle resistance, the elasticity, and the sterilization of available gamma-rays, bio-degradable under suitable condition of being furnished with of gained.
Background technology
United States Patent (USP) (deliver for a patent No. 5,545,371, the inventor Lu Fu people by on August 13rd, 1996; The b patent No. 6,183,684, the inventor Lu Fu people, deliver February 6 calendar year 2001) a kind of non-weaving cloth or technology of arranging net and equipment produced described.This equipment comprises polymer-extruded machine and melt spinning device, has many spinneret orifices that many continuous filament yarns are provided on its spinneret.On the precalculated position under spinneret an extension apparatus is housed, the nozzle in this extension apparatus provides the air stream of drawn fiber, and the extension apparatus below is a removable lapper, is used for collecting fiber, and it is configured as non-weaving cloth or arranges net.
Nylon, polyester or polypropylene fibre and their copolymer are synthetic textile fibres the most commonly used during non-weaving cloth is produced, and the equal melting spinning of these polymeric materials is made non-weaving cloth with the equipment of being introduced in the United States Patent (USP) above-mentioned (5,545,371).Spunbond, melt and spray, air lay, the water thorn, all available these polymer of acupuncture or carding are raw material.Although these technologies respectively have its certain advantage, some concrete character of each tool of the cloth of production, however these non-weaving cloths also often have limitation, and these limitation have also limited their application.
The invention brief introduction
The purpose of this invention is to provide a kind of circumscribed fabric of polymer fabrics in the past that surmounts.
The invention provides a kind of production method of spun-bonded non-woven, comprise the steps: to provide a polymer filaments extruder, include the spinneret of porous, adopt spunbond mode, to produce many continuous spun-bonded continuous yarns; A drafting system is provided under spinneret, the long filament that gets off from spinneret is carried out drawing-off; Provide a collection surface, with the fibrous spun-bonded non-woven of collecting; The material that uses aliphatic-aromatic copolyester to extrude as extruder is made spun-bonded continuous yarn; Described spunbond mode comprises that spinning speed is greater than 3500 meters/minute.
In the method for the invention, adopt high speed spinning.According to the 11st page of record of " high speed spin drawing deformation technique and equipment " (in September, 1981, china textile industry publishing house publishes), high speed spinning promptly refers to: spinning speed＞3500 meter/minute.
The applicant concludes, use as United States Patent (USP) 5,545,371 described method and apparatus and by U.S.'s Eastman (Eastman) chemical company (address: the fiber produced of the copolyesters of Zhi Zaoing (this copolyesters has been classified one of reference material of the application as) tennessee,USA Kingsport city), the applicant has obtained a kind of non-weaving cloth, this cloth has unusual excellent drapability, and elasticity can be carried out repeated stretching recovery and do not caused fracture or destruction.This novel fabric can be bonding with diversified composition.As film, cellulose (cotton, water-soluble fibre), PLA, wood pulp, wood-fibred, paper and other natural fiber such as wool.This new fabric is biochemical degradation fully, only stays carbon dioxide and water after thoroughly decomposing.This fabric can carry out disinfection with gamma-rays or electron beam.Diversified adhering technique includes but not limited to a hot rolling, impregnation, and acupuncture, the water thorn, the bonding or ultrasonic wave of hot-air, radio wave, microwave or service message method are bonding.
This novel fabric can also be with United States Patent (USP) 5,545,371 described Apparatus and method fors from United States Patent (USP) 5,446,079; 5,599,858 and 6,020,393 (hereinafter to be referred as these patents be " AAPE " patent, one be listed as list of references at this) a kind of aliphatic-aromatic copolyester of being introduced (hereinafter to be referred as " AAPE ") fiber of gained makes.
This novel fabric usually in warm coastal saltwater environment, through time in 15 to 20 weeks be bio-degradable.In fresh water, also obtain similar result.Biochemical degradation in the seawater is a kind of very Ideal Characteristics to the ecological balance.As everyone knows, marine life such as green turtle are to contain to swallow some abandoned plastic products such as polybag and packaging material (they think jellyfish by mistake) and cause death.
Novel fabric of the present invention can be used for operating room curtain and operating coat, operating equipment sterilization infantees, with promptly abandoning amenities, the durable goods that replace woven cloths, synthetic leather, have in the wiper of retractility and disposable diaper and the adult diaper to require resilient parts, because next to the shin and good shape is arranged is important indicator to these diapers.
Detailed description of the invention
The present invention is a kind of product, is a kind of non-weaving cloth specifically, and specific fatty family-aromatic copolyester that this cloth is produced with eastman chemical company (tennessee,USA Kingsport city) is that raw material is produced.United States Patent (USP) 5,599,858 (being published on February 4th, 1997, inventor CharlesBuchanan etc.) title is " aliphatic-aromatic copolyester and cellulose esters/polymer " this copolyesters is described to some extent.Specifically, as polymeric material, with a certain technology and equipment, as United States Patent (USP) 5,545,371 (also classifying this patent as list of references in the lump inferior) described technologies and equipment are produced with this aliphatic polyester.Spunbond technical process is carried out with high fiber speed on patent 371 described devices.
In addition, this non-weaving cloth can be a polymer raw material with the aliphatic aromatics copolyesters described in the AAPE patent, makes on described technology of 371 patents and equipment.
What the present invention used is the described a kind of polyester of AAPE patent, and this AAPE is that eastman chemical company (tennessee,USA Kingsport city) is made production on optimum device, and is the trade mark sale of copolyesters class with EastarB10TM.More particularly, AAPE is a class linear random copolymer or branch and/or chain weightening finish copolyesters basically, and following repetitive is arranged:
Figure C0181963200051
R wherein 1Be one or more C 2-C 8The group that methylene or oxyalkylene are formed, its molar percent is 80-100;
R 2Then select from one or more groups, these groups are made up of following: C 2-C 8Methylene or oxyalkylene; C 2-C 8It is halogen that methylene or oxyalkylene wherein have one to four substituted composition, C 6-C 10Aryl or C 1-C 4Alkoxyl or C 5-C 12Cycloalkane (as 1,4-hexamethylene diethanol); C 5-C 12Cycloalkane, it is halogen that one to four substituted group is wherein arranged, C 6-C 10Aryl or C 1-C 4Alkoxyl.R 2Molar percent be 0 to 20;
R 3Be one or more group, they consist of C 2-C 12Methylene or oxyalkylene; C 2-C 12Alkyl or oxyalkylene wherein one to four group by halogen C 6-C 10Aryl and C 1-C 4Alkoxyl replaces; R 3Molar percent be 35 to 95;
R 4Be one or more group, they are C 6-C 10Aryl; C 6-C 10Aryl wherein one to four group is a halogen, C 6-C 10Aryl, C 1-C 4Alkoxyl replaces; C 5-C 10The ring subunit; C 5-C 10Ring subunit wherein one to four group is a halogen, C 6-C 10Aryl or C 1-C 4Alkoxyl replaces.R 4Molar percent be 5 to 65.
Best AAPE is from C 2-C 8Select in the alkyl, molar percent is 90-100; R 2Molar percent be 0 to 10; R 3For one or more by C 2-C 8The group that alkylidene or oxyalkylene are formed, its molar percent is 35 to 95; R 4For one or more by C 6-C 10The group that aryl is formed, its molar percent is 5 to 65.More preferably the AAPE of Shi Yonging is from C 2-C 4The R that alkylidene is selected 1, molar percent is 95 to 100; R 2Molar percent be 0 to 5; R 3For one or more by C 2-C 6The group that alkylidene is formed, its molar percent is by 35 to 65; R 4Be 1,4 substituted C 6Aryl, its molar percent is by 35 to 65.
Terminology used here " alkyl " and " alkylidene " mean and be-CH 2-CH 2-CH 2-CH 2-and-CH 2CH (X)-CH 2-straight key or chain part." oxyalkylene " mean the alkylidene chain that contains 1 to 4 ether oxygens group." the ring alkylene " mean any alkyl that contains cycloalkanes part.
The composition of the AAPE that other suggestions are used is by two following pure and mild diacid (or derivative of generation polyester), and following molar percent preparation is calculated with hundred-percent diacid and hundred-percent glycol.
(1) glutaric acid (about 30-70%); Terephthalic acid (TPA) (about 25-70%); 1,4 butanediol (about 90-100%); And modification glycol (0-10%).
(2) succinic acid (about 30-95%); Terephthalic acid (TPA) (about 5%-70%); 1,4 butanediol (about 90%-100%); And modification glycol (0-10%)
(3) adipic acid (about 30-75%); Terephthalic acid (TPA) (about 25-70%); 1,4 butanediol (about 90%-100%); And modification glycol (0-10%
Above-mentioned modification glycol should be preferentially from 1,4 cyclohexanediol, and triethylene glycol is chosen in polyethylene glycol and the neopentyl glycol.The AAPE that optimum is selected is for linear, the copolyesters of branch or extended chain, wherein the molar percent of ethanedioic acid is 50-60%, the molar percent of terephthalic acid (TPA) is 40-50%, and the molar percent of 1,4 butanediol is at least 95%, the better adipic acid molar percent about 55 to 60% that is chosen as, terephthalic acid (TPA) is 40-45%, 1,4 butanediol at least 95%.All there is commercial offers in Yi Enman chemical company (Tennessee Kngsport) to more such compositions.
Some examples of preferred AAPE comprise that poly-(to dimethylated pentanedioic acid-Co-terephthalic acid (TPA)) contains (a) 50% adipic acid/50% terephthalic acid (TPA)/100%1,4 butanediols, (b) 60% adipic acid/40% terephthalic acid (TPA)/100%1,4 butanediols; Or (c) 40% adipic acid/60% terephthalic acid (TPA)/100% butanediol; Poly-(tetramethyl-succinic acid-Co-terephthalic acid (TPA)) contains (a) 85% succinic acid/15% terephthalic acid (TPA)/100%1,4 butanediols or (b) 70% succinic acid/30% terephthalic acid (TPA)/100%1,4 butanediols; Poly-(ethyl succinic acid-CO-terephthalic acid (TPA)) contains 70% succinic acid/30% terephthalic acid (TPA)/100 ethylene glycol; And poly-(tetramethyl adipic acid-Co-terephthalic acid (TPA)) contains 85% adipic acid/15% terephthalic acid (TPA)/100%1,4 butanediols.
AAPE has 10 to 1000 repetitives comparatively desirable, more excellent 15 to 600 repetitives that are chosen as.The inherent viscosity of AAPE is with 0,4 to 2, and 0dl/g is for well, and 0,7 to 1,4dl/g is better.Viscosity number is at 100ml, and weight ratio is to put into 0.5 gram sample in the solution of phenol/tetrachloroethanes of 60/40 to measure in the time of 25 ℃.
AAPE among the present invention also comprises a kind of side chain agent, its percentage by weight is 0.01 to 10% of an AAPE total weight percent, more excellent scope is 0.1 to 1.0%, the main average molecular weight of this side chain agent with 50 to 5000 for well, more more specifically be 92 to 3000, nearly 3 to 6 degrees of functionality, this side chain agent can be the polyalcohols that 3 to 6 hydroxyls are arranged, and the polycarboxylic acids of 3 or 4 carboxyls is arranged or the carboxylic acid that adds up to 3 to 6 hydroxyls and carboxyl is arranged.
Representative have the low-molecular-weight polyol of side chain agent function that glycerine is arranged, three methyl alcohol, propane, 1,2,4 butantriols, pentaerythrite, 1,2,6-hexanetriol, D-sorbite, 1,1,4,4-four (hydroxyl) cyclohexane, three (2-ethoxy) isocyanates and dipentaerythritol.The triol that has the alkylene oxide condensation of 2 to 3 carbon to derive as the example of the many alcohol of HMW (weight average molecular weight 400 to 3000) side chain agent is as oxirane with the expoxy propane of how pure initator is arranged.
Representational as side chain agent hydroxysuccinic acid, citric acid, tartaric acid, 3-hydroxyl glutaric acid, glactaric acid and 4 (beta-hydroxyethyl) phthalic acid.Such hydroxy acid all contains 3 or more hydroxyl and acidic group.
The preferential especially side chain agent of using has triphen six (carboxylic) acid, 5-methylphthalic acid, pentaerythrite, trihydroxymethyl propane and 1,2,4-butantriol.
Contain 100% molar 1, the 4-butanediol, 43% gram molecule terephthalic acid (TPA) and 57% gram molecule adipic acid, poly-(the tetramethyl adipic acid-CO-terephthalic acid (TPA)) that carries out collateralization with the pentaerythrite of 0.5% percentage by weight be the example of AAPE of the collateralization of the present invention's use.The production of this copolymer is that the titanium at 100PPM (begins with Ti (OiPr) 4Exist down the dimethyl adipate, dimethyl terephthalate (DMT), pentaerythrite and 1,4-butanediol be in vacuum and 190 ℃ heating 1 hour down, then in 200 ℃ of heating 2 hours down, 210 ℃ following 1 hour, and then go 250 ℃ of heating 1.5 hours down.This copolyesters goes to make section behind the extrusion molding usually.
The AAPE of another collateralization of the present invention for get (tetramethyl adipic acid-CO-terephthalic acid (TPA)) contain 100% molar 1,4-butanediol, 43% molar terephthalic acid (TPA) and 57% molar adipic acid, with 1 of 0.3% percentage by weight, 2,4,5-benzenetetracarboxylic acid-dianhydride collateralization.This copolyesters is that (tetramethyl adipic acid-CO-terephthalic acid (TPA) and 1,2,4,5-benzenetetracarboxylic acid-dianhydride go to react in the extrusion and obtain with linear gathering.
The AAPE that the present invention uses also may contain the extender of chain.Typical chain extender has divinyl ether, as United States Patent (USP) 5,817, discloses in 721, one is listed as reference paper at this.Preferred divinyl ether is 1,4-butanediol divinyl ether, and 1,5-hexylene glycol divinyl ether is 1,4-cyclohexanedimethanol divinyl ether.The percentage by weight of chain extender can be preferably in 0.3 to 2.5% by 0.01 to 5% of the gram weight percentage of AAPE.
The preparation of polyester and copolyesters is well-known technically.The common temperature at 150 ℃ to 300 ℃ of reaction is four titanium oxide at polycondensation catalyst, oxalic acid manganese, and antimony oxide, oxalic acid-two fourth tin carries out under zinc chloride or their mixture.Catalyst consumption is generally 10 to 1000ppm of reactant gross weight.For purposes of the invention, representative fatty copolymer is the polycondensation product of dimethylated pentanedioic acid and 1,6 cyclohexanediol.This polyester i.e. (cyclohexane glutarate) is with following method preparation: in the presence of the titanium of vacuum and 100ppm, dimethylated pentanedioic acid and 1, the 6-cyclohexanediol heated 4 hours at about 210 ℃, and is about 1.5 hours at 260 ℃ then.(tetramethyl terephthalic acid (TPA) penta diester contains 30% molar terephthalic acid (TPA) to representational aliphatic-aromatic copolyester, and its preparation method is: at vacuum and 100PPM titanium (during beginning with Ti (OiPr) for poly- 4Form exist) condition under, with dimethylated pentanedioic acid, dimethyl terephthalate (DMT) and 1,4-butanediol are heated to 200 ℃, one hour, continue to be warmed up to 245 ℃ then, 0.9 hour.
The spun-bonded non-woven made from the spinning of Eastman EASTARBIOGP copolyester material has very excellent drapability crease-resistant intrinsic characteristic is arranged when room temperature simultaneously.Its good hand touch, cloth cover are not sliding does not glisten, and does not produce noise during use.Can also add additive and pigment in the production.Post processing can also change its feel.
This non-weaving cloth is flexible, can repeated stretching, and restore and do not rupture.Also present high resiliency with arranging net of doing of this material and do not rupture.Change spinning condition and can change its elasticity, to adapt to the requirement of this some concrete purposes of cloth.Equally, select proper technical conditions can change the friction feature on its surface, feel soft bafta sense from rubber.In addition, can also change the appearance features of non-weaving cloth by different process conditions, the fibre bundle that has fiber adhesion to cause from the surface is to there not being fibre bundle fully.
The non-weaving cloth that the present invention produced can be bonding with multiple material, includes but not limited to, film is weaved cotton cloth, non-weaving cloth, metal film or paper.This non-weaving cloth also can with various polymer and component, comprise and itself carry out extrusion coating.Be suitable for being used for and cellulose and other natural fibers and bio-degradable polymer such as PLA compound.Copolyesters of the present invention can also and other polymer, comprise that the polyblend spinning of other bio-degradables makes other spunbond product.
The spun-bonded non-woven that importantly the present invention produced can be degraded under the environment of compost fully, and what stay has only water and carbon dioxide.And in the environment of non-compost, this non-weaving cloth can be a durable type.
Copolyesters as described herein can also and additional fibers material compound product of making multilayer on spunbond line.Nonwoven fabric and composite with this class manufacture of materials can be sterilized with gamma-rays.There is multiple adhering technique to be applicable to this nonwoven fabric.For example: hot rolling point is bonding, resin-bonding, and acupuncture, hot-air is bonding, ultrasonic wave, high-frequency electric wave, microwave or dielectric are bonding.One-tenth cloth and the bonding available heat melten gel of other materials, ultrasonic wave, high-frequency electric wave, microwave, dielectric is bonding, and hot-air and good fortune are penetrated bonding and other complex techniques.The high speed that the low melting point of this polymer (about 108 ℃) can be improved in the manufacturing process is bonding.
Heating can make this nonwoven fabric shrink, and uses this cloth wrap articles like this, can obtain flexiblely being close to the effect of being wrapped up in object again, and still keep elasticity, intensity and toughness.
Non-weaving cloth of the present invention can be produced by multicomponent fibre, including, but not limited to one or more bio-degradable copolyesters by Eastman.The form of multicomponent fibre can be Bian-Bian, core-skin, island etc.Irrelevant with fiber cross section shape (garden shape for example, pancake, hollow, the geometry on three leaf lobes and other big surfaces).
The present invention can further specify with following best object lesson, yet is understandable that these examples only are used for doing explanation usefulness, unless concrete indicating arranged, should not be used as the restriction of the scope of the invention.
According to above-mentioned purpose and other purposes, it is more obvious that these purposes will become below, now the present invention can be narrated with reference to concrete accompanying drawing.
Novel content of the present invention
Embodiment 1
With United States Patent (USP) 5,545,371 and 6,183, the non-weaving cloth of 634 described spunbond Processes and apparatus productions is listed below:
With EASTARBIO TMThe GP copolyester section descended dry 6 hours so that the water content of section below 300ppm, is added to section in the screw extruder then at 45 ℃.The temperature of extruder and spinning manifold is set in 195 ℃, and the width of opening area is 500mm on the spinneret, and the aperture is 0.35mm, totally 2016 holes.The fiber of extruding is by a drafting system drawing-off, and the slit of extension apparatus is than the wide 100mm of spinneret aperture area, and extension apparatus is with 35 pounds/inch 2Compressed air with drawing of fiber, the drawing of fiber that comes out from extension apparatus is laid on the conveyer belt, under the conveyer belt aspirator is arranged.The discharge-amount of melt is measured by measuring pump, is that arranging net on 0.5 gram/hole/minute (ghm) conveyer belt moved with 15 meters/minute speed, through hot-rolling mill at 85 ℃ of following hot calendering bondings.The nonwoven fabric that obtains is rolled on the roller.Hot rolling previous fibre dawn number is 1.3, and the basic weight of nonwoven fabric is 130 gram/rice 2The spunbond nonwoven fabric outward appearance of gained is good, flexible, and good hand touch does not have scroop or noise during touch.
Nonwoven fabric character can be found out from the DSC test result.The curve first time of DSC (character that reflection is weaved cotton cloth) shows a Bimodal Character, its main fusing point is 120 ℃, rescan (only reflect polymer property, do not reflect the nonwoven fabric feature) shows is a broad but be unimodal pattern comparatively speaking, and fusing point is 108 ℃.DSC single pass degree of crystallinity is about 29%, all successfully produces spun-bonded non-woven with this material with high discharge-amount and high or low spinning speed.
Embodiment 2
With equipment used among the embodiment 1, technology and material are all identical, and different is that melt temperature is 205 ℃, and compressed air pressure is 45 pounds/inch 2The fiber number of gained fiber is 1.0, discharge-amount be 0.5 gram/hole/minute, the linear velocity of production is 30 meters/minute, the nonwoven fabric basic weight is 70 gram/rice 2, also having obtained weight is 40 gram/rice 2Nonwoven fabric, linear velocity is 40 meters/minute.Change technological parameter like this, can produce basic weight is 10 to 17 gram/rice 2Non-weaving cloth.The situation that discharge-amount is very high also can be accomplished.All nonwoven fabric of working it out all present good structural intergrity.
Some advantages of this non-weaving cloth comprise:
A) inherent wrinkle resistance under unusual superior drapability and the room temperature. Good hand touch does not have scroop, Do not glisten, do not make a noise during use.
B) good elasticity can repeatedly stretch, the circulation of recovery and not being destroyed. Present very high Elasticity and can not break. Can change extent of elasticity to satisfy this nonwoven fabric by changing spinning condition Some special-purposes. The process conditions of equally, suitably selecting also can change the friction spy on its surface Levy, the bafta sense from the same feel of rubber to softness presents a lot of fibre bundles from the surface, to seeing Surface less than fibre bundle.
C) can be bonding with many base cloths, these base cloths form with following material, include, but are not limited to Wool, cotton, water-soluble fibre, wooden oar, PLA, nylon, paper and other bio-degradables Polymer. Also can be compound with film and other polyester materials.
D) after (hot and humid) degradable decomposes fully under the environment of compost, only stay carbon dioxide and Water, and the mineral matter of trace, and do not having under the condition of such environment, arranged very long service life, Can make durable goods.
E) nonwoven fabric of this class material gained and Compound Fabric available electron bundle or gamma-rays sterilization.
F) existing big section closes that technology is all available carries out individual layer with this nonwoven fabric and itself or other materials Or multilayer is bonding. For example, the point of hot rolling method is bonding, resin-bonding, and hot-air is bonding, PUR, The water thorn, the acupuncture ultrasonic wave, high frequency electric, microwave, and dielectric is bonding, binder fibre and plastic compression are sticking Close. It is bonding that the low crystalline melt point of this polymer deserves well of manufacture process high speed degree. Product process and Do not produce noise in the use.
G) this nonwoven fabric can be used to wrap articles and utilizes it to be subjected to the character of thermal contraction, makes this cloth wrap tightly thing Product, but still keep its elasticity, intensity and toughness.
The use of this nonwoven fabric includes but not limited to following aspect:
A) operation dress and operating room be with holding court from behind a screen, and other have fabrics of anti-permeability requirement to kill as using During the worm agent, the protection clothes that need etc.
B) sterilization infantees and operating equipment infantees
C) with a part of namely abandoning hygienic articles, include but not limited to, baby' diaper, adult diaper reaches Underwear, underpants, stopper, sanltary towel, with namely abandoning underwear, underpants and mattress, some other Isolation body fluid device is with product of namely abandoning clothing or some other limited operating life etc.
D) as the non-woven substitute of fabric and knit goods, still keep its biodegradability. Such as pillow Cover, lining, furniture cloth, insulating materials is held court from behind a screen, clothing, gloves and some industrial goods.
E) nonwoven fabric that uses in agricultural greenhouse and applications in civil engineering and net comprise removal of impurities Grass, anticorrosion, seed mat and container, hot formed flowerpot, the topped thing of trees and Cong Mu, plant tube Can provide required in the reason " medicine " system of product, etc.
F) do synthetic leather, the vinyl plastics goods, the luxurious fabric of leatheret and other high added values is used Soft and tensile base cloth.
G) wiper series products, this series products is durable, and tear-proof can have very big elongation before tearing, And absorption also can retain dust or other particles. In other application forms, these spunbond nonwoven fabric Can be used for transmitting cleaning agent and sterilization chemical reagent, medical treatment/beauty and skin care treatment, furniture is waxed and it His similar purposes.
H) above-mentioned any form and film base fabric or lining or other bed courses form unique fabric knot Structure.
I) the said goods is combined with the film with base polymer, forms or be laminated into a kind of nonwoven fabric.
J) the said goods and film form or are laminated into a kind of non-weaving cloth.
K) form the nonwoven fabric of multi-constituent fibre system with what comprise one or more by this bio-degradable copolyesters, the form of this many compositions fiber can comprise, but be not limited to Bian-Bian, core-skin, the island, etc., with the cross sectional shape of fiber irrelevant (for example: garden shape, flat, three leaves, hollow)
L) non-weaving cloth of being made by multiple fiber, its structure is the dissimilar of two or more The mixture of fiber, wherein having the fibre composition of a part at least is this bio-degradable copolyesters Multiple fiber like this can with above-mentioned K in multicomponent form combine.
With
M) baby' diaper, adult-incontinence articles, and elasticity of demand performance in the product such as durable goods Parts.
This nonwoven fabric has the characteristic of the after-contraction of being heated, and still keeps its perisystolic elastic characteristic after the contraction, Do not become fragile. Can form with the surface of wrapped article behind this Material shrinkage and fit tightly. Shrinkage factor can Up to full-sized 90%, can determine in advance the receipts that it is total by the selection to the process conditions of producing this cloth Shrinkage. The main determining factor of shrinkage factor size is in the spunbond process, the fiber speed that reaches and hot sticky Close condition. Effectively the control of cooling and spinning threadling temperature is also very important.
When this non-weaving cloth shrank, the fibre structure of cloth also shrank along with pressing dimension scale, thus its hole The crack rate reduces, and the basic weight of cloth increases, and the opposing permeability improves, but still keeps its elasticity. Normal polyester is non-Weave cotton cloth and after thermal contraction, usually become fragile and stiff. Novel place of the present invention namely is to have kept elasticity and flexible Song. In addition, the contraction under tense situation can make the busy size that determines earlier of the article that produce and stretch Length/recovery feature. By means of controllable thermal contraction, use disposable mistake thereby control pore-size production Filter.
Such character can obtain concrete application when making some article. Namely by using heat to change First size and obtain last required shape. This application is not only applicable to namely abandoning the type diaper, the adult Incontinence article, clothes require the production of the absorbent pad of sanitary towel for women of definite shape, and are applicable to and do packing timber Expect that they will have heat insulating ability, permeability resistance, ventilative maybe can packing tightly wrapped up in article again, such as, but do not limit In the operation infantees with gamma-rays or electron beam sterilization, each operation dress, bandage, shield, gloves, the automobile drop cloth, Mattress infantees and mat, the material of contacting foodstuff, contraction causes bottle packaging material and container label that spills that packs tightly Deng.
Although nonwoven fabric of the present invention has been proved to be available spunbond process and has produced, similar nonwoven fabric Also available melting and spraying, the technologies such as dry method or combing are produced. Spunbond is possible also with melting and spraying combination.
Nonwoven fabric of the present invention in warm shallow sea saltwater environment usually at 15-20 biochemical degradation in week. Survey Examination is to carry out in the place of the LightHouse of Florida State point. Sample cloth is hung in below the harbour The underwater that is lower than the time of low water, after 15 weeks, this sample cloth is decomposed into very fragile thin curtain it Be broken into small pieces when mentioning in the water.
An object of the present invention is to provide a kind of nonwoven fabric of improvement, this cloth has unique combination property, That other nonwoven fabric are unavailable. This nonwoven fabric has one of a commercial supply of material with what eastman chemical company was produced Kind of special copolyesters, its trade name is EASTER Bio GP, with spun-bond process nonwoven fabric technology with establish Standby production.
Another object of the present invention provides a kind of non-weaving cloth. This cloth has elasticity, but hot rolling, can With the gamma-rays sterilization, and bio-degradable. This nonwoven fabric can be produced with spun-bond process.
So far, we most realistic and optimum content is described and describes to the present invention. Here must say Bright is, the technical staff in the industry, makes within the scope of the present invention obvious correction or partially From being fully possible.

Claims (1)

1. the production method of a spun-bonded non-woven comprises the steps:
A polymer filaments extruder is provided, includes the spinneret of porous, adopt spunbond mode, to produce many continuous spun-bonded continuous yarns;
A drafting system is provided under spinneret, the long filament that gets off from spinneret is carried out drawing-off;
Provide a collection surface, with the fibrous spun-bonded non-woven of collecting;
The material that uses aliphatic-aromatic copolyester to extrude as extruder is made spun-bonded continuous yarn;
Described spunbond mode comprises that spinning speed is greater than 3500 meters/minute.
CNB018196322A 2000-09-29 2001-09-21 Bio-degradable copolyester nonwoven fabric Expired - Fee Related CN100398306C (en)

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US09/956,393 2001-09-19

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JP4120883B2 (en) * 2004-06-29 2008-07-16 東洋紡績株式会社 Spunbond nonwoven fabric
JP5712465B2 (en) * 2009-04-24 2015-05-07 Jnc株式会社 Biodegradable nonwoven fabric and fiber product using the same
CN103142354A (en) * 2012-10-31 2013-06-12 上海意东无纺布制造有限公司 Point compound absorbent pad
CN103225176B (en) * 2013-04-24 2015-06-17 徐双喜 Preparation method for completely biodegradable aliphatic polyester spunbond non-woven fabric
CN107574583A (en) * 2017-10-17 2018-01-12 芜湖立新清洁用品有限公司 Preparation method for the arlt's strata of the nonwoven fabrics for wiping applications of catering industry
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Publication number Priority date Publication date Assignee Title
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EP1330350A1 (en) 2003-07-30
ES2382791T3 (en) 2012-06-13
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ATE555241T1 (en) 2012-05-15
WO2002028626A1 (en) 2002-04-11

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