CN107475808A - A kind of preparation method of low melting point skin-core structure polylactic acid short-fiber - Google Patents
A kind of preparation method of low melting point skin-core structure polylactic acid short-fiber Download PDFInfo
- Publication number
- CN107475808A CN107475808A CN201610413962.9A CN201610413962A CN107475808A CN 107475808 A CN107475808 A CN 107475808A CN 201610413962 A CN201610413962 A CN 201610413962A CN 107475808 A CN107475808 A CN 107475808A
- Authority
- CN
- China
- Prior art keywords
- polylactic acid
- melting point
- low melting
- fiber
- skin
- 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.)
- Pending
Links
Classifications
-
- 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
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Multicomponent Fibers (AREA)
Abstract
The invention discloses a kind of preparation method of low melting point skin-core structure polylactic acid short-fiber, low melting point polylactic acid slice and polylactic acid slice are dried respectively, cortex is used as using low melting point PLA, PLA is sandwich layer, form low melting point polylactic acid melt and conventional polylactic acid melt, spinning is prepared into bicomponent sheath cored structure acid fiber by polylactic raw tow, then prepares skin-core structure polylactic acid short-fiber.Present invention employs low melting point raw material to carry out low-temp spinning, it is that 155~170 DEG C of conventional polylactic acid slice prepares the polylactic acid short-fiber of skin-core structure by low melting point polylactic acid slice and fusing point that fusing point is 125~135 DEG C, because cortex is different with the shrinkage factor of sandwich layer, cause that its bulkiness is good, elastic restoration ratio is high, low-melting cortex is employed as adhesive, the heat bonding of product is functional, in addition, products obtained therefrom is when carrying out non-woven fabrics processing, low-melting component softens bonding first, it is easy to coiled, obtained non-woven fabrics of good performance.
Description
Technical field
The present invention relates to synthesizing polylactic acid chopped fiber, and in particular to a kind of preparation method of polylactic acid short-fiber.
Background technology
PLA is a kind of biodegradable high molecular polymer, has good mechanical performance and physical property, is fitted
For extruding, being molded, membrane, the various processing methods such as spinning.It is widely used in medical treatment, health, pharmacy, agricultural, packing business,
The fields such as textile clothing industry, automobile decoration, it can largely substitute conventional polymer material.Its product is related to modeling from industry to civilian
Material products, packaged food, non-woven fabrics, industry and civilian weaving face fabric, geotextile, health care fabric, rag, disposable top grade are defended
Raw articles for use, outdoor Uvr Protective Fabric, tent cloth, ground cushion etc..The fiber of polylactide and its copolymer is prepared and can done using solution
Method spinning and melt spinning are realized, but the technique of solwution method spinning is complex, and solvent is general poisonous and reclaim difficulty.Phase
Melt spinning is simple to operation than under, more advantage.
Bicomponent fibre can have multiple section, have in core-skin and inclined core-skin, arranged side by side, band arranged side by side and hollow arranged side by side and partially hollow
Heart orange petal and non-stop layer orange petal, striped and island and conduction, three leaves and abnormal shape and mixed type etc., can also specially be designed,
Produce more varying cross-section fibers.In terms of economic prospect, section is most important.In general, each type of bi-component
Fiber has different purposes.One of which purposes is production self-crimping fiber or coiled-coil fiber, and this mode produces can
Avoid the occurrence of that presence can not possibly crimp when machinery or aerodynamics means are crimped processing.It is in addition, fine from crimping
The recovery of dimension is preferable, and therefore, the fiber processed can use as fiber-filled material.Fiber from crimp principle be
According to the different thermal contraction performances of two kinds of materials, the fibre section of selection is parallel type and eccentric core-skin type, and many differences polymerize
Thing material, which can be combined, to be used.Another important use of bicomponent sheath-core fibers is that the Thermoadhesive of improvement fiber can be with suitable at present
The needs of non-woven production are closed, by melting compared with low-melting component, fiber is bonded as non-woven cloth.It is this industrially to apply
Thermal non-woven fabric uses sheath core fiber, and its cortical material fusing point is low compared with sandwich layer, and the component of conventional melting point makees sandwich layer, low
Melting point component makees cortex.
Zhang Dequan【Low melting point Skin-core type terylene short fiber production process is studied】(《Synthetic fibers》, the 5th phase in 2009) with
Low-melting point polyester (COPET), conventional polyester (PET), develop the composite spinning of COPET/PET low melting point core-skin type composite short fibers
Production technology, the selection of COPET raw materials, COPET slices synthesis methods and drying, vacuum twin-screw extruding machine, filament spinning component, spinning are inquired into
The influences of process conditions and equipment to production such as silk temperature, crimping machine, dryer and baling press.
Chinese patent 201010135281.3 discloses a kind of biodegradable two-component core-skin low-melting-point composite fiber,
Its raw material includes a kind of poly-succinic fourth diester (PBS) and a kind of other biodegradable polymers.Above two raw material manufactures
The cross section of fiber be a kind of skin-core structure, especially biodegradable two-component core-skin low-melting-point composite fiber is with poly- fourth
Diacid fourth diester (PBS) is the cortex of composite fibre, and poly-lactic acid ester (PLA) is the sandwich layer of composite fibre.Cortex poly-succinic fourth
A kind of additive can be added in diester (PBS), is prepared using twin-screw and core-skin type composite spining module.
Chinese patent 200810024819.6 discloses the process of PLA fire resistance fibres production, it is characterized in that PLA is produced
Melt pass through composite spinning casing, core-sheath pack spin produce the fire-retardant PLA fibers of core-skin (identical fusing point) producer
Method, wherein PLA melts are sandwich layer, and its core-skin weight ratio is 2:8~6:4；The percentage by weight of its cortex material is matched somebody with somebody：Cortex PLA
Polymer 75-85%, fire-retardant master granule 15-25%, coupling agent 0.2-4%；Its core layer material is 100% PLA polymer.
The above-mentioned prior art closely related with the present invention, it is disadvantageous in that：Identical fusing point is only used both at home and abroad
PLA (PLA) prepares the report of skin-core structure acid fiber by polylactic, its control to production equipment and process parameter require it is relatively low,
The heat bonding poor-performing of product, its application also have certain limitation, it is difficult to are adapted to the needs of non-woven production.
The content of the invention
Goal of the invention：In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a low melting point skin-core structure poly- breast
The preparation method of sour chopped fiber, the chopped fiber is widely used, and raw material is renewable, and product is degradable.
Technical scheme：A kind of preparation method of low melting point skin-core structure polylactic acid short-fiber, by low melting point polylactic acid slice
It is dried respectively with polylactic acid slice, using low melting point PLA as cortex, PLA is sandwich layer, and core-sheath ratio is 3:
7~6:4, two kinds of sections after melt extruded is discharged, form low melting point polylactic acid melt and conventional polylactic acid melt, then divide respectively
Not after metering, spinning is prepared into bicomponent sheath cored structure acid fiber by polylactic precursor, then through boundling, stretching, curling, drying,
Cut off operation prepares skin-core structure polylactic acid short-fiber.
In order to further make spinning more smoothly, the appearance of avoid floaing silk and broken end, the low melting point polylactic acid slice
Drying uses dew point as less than -40 DEG C of dry air, 45~55 DEG C, 6~8h of drying time of drying temperature, and control section is aqueous
Rate is less than 50ppm；The drying of the polylactic acid slice uses dew point as less than -40 DEG C of dry air, drying temperature 80~95
DEG C, drying time 2h, then temperature is reduced to 45~55 DEG C, 6h is balanced, control section moisture content is less than 50ppm.
Further, draw ratio is used as 1:30~36 screw extruder carries out melt extruded, effectively can prevent height from cutting
Cut.
Further, the temperature of the low melting point PLA is 150~200 DEG C before spinning, and the temperature of the PLA is 190
~230 DEG C, spinning temperature is 220~240 DEG C.
Further, it is stretching in drawing-off bath and is carried out in water-bath, the temperature of bath is 50~55 DEG C, the drawing-off stretched
The speed of roller and crimping wheel is not higher than 150m/min.
Beneficial effect：Present invention employs low melting point raw material to carry out low-temp spinning, by the eutectic that fusing point is 125~135 DEG C
Point polylactic acid slice and the conventional polylactic acid slice that fusing point is 155~170 DEG C prepare the polylactic acid short-fiber of skin-core structure, because of skin
Layer is different with the shrinkage factor of sandwich layer, causes that its bulkiness is good, elastic restoration ratio is high, employs low-melting cortex conduct and bonds
Agent, the heat bonding of product is functional, can be widely applied to the hygienic materials such as surgical mask, bandage, diaper, sanitary napkin and room
Inner decoration material, the added value and the market competitiveness of polylactic acid short-fiber are substantially increased, in addition, products obtained therefrom is carrying out nonwoven
When cloth is processed, low-melting component softens bonding first, is easy to coiled, obtained non-woven fabrics of good performance.
Embodiment
Technical solution of the present invention is described in detail below, but protection scope of the present invention is not limited to the implementation
Example.
Embodiment：
Embodiment 1：Two kinds of raw materials of low melting point polylactic acid slice and polylactic acid slice are dried respectively, the poly- breast of low melting point
The drying of acid section uses dew point as -60 DEG C of dry air, 50 DEG C, drying time 7h of drying temperature, and section moisture content is
18ppm, the drying of polylactic acid slice uses dew point as -60 DEG C of dry air, 90 DEG C, drying time 2h of drying temperature, then drops
Low temperature balances 6h, section moisture content is 21ppm to 50 DEG C.After drying respectively after the discharge of screw extruder melt extruded,
Melt is formed, the draw ratio of screw extruder here is 1:34, the temperature in each area of screw extruder is shown in Table 1.Gathered with low melting point
For lactic acid as cortex, PLA is sandwich layer, is cut into slices according to core-sheath ratio 3:7 are measured by measuring pump, into core-skin
Construction package and spinneret, for temperature control at 150 DEG C, PLA enters temperature before casing before low melting point PLA enters casing during preceding spinning
Control in the presence of spinning manifold is extruded into thread melt at 190 DEG C from the spinneret orifice of spinning manifold, now spinning manifold
Temperature is 220 DEG C；Above-mentioned thread melt is after spinning manifold spinneret orifice extrusion, the solidification forming under the cooling of cross air blasting, then
By oiling, and the coiling and molding on winding head, now the speed of winding head is 1200m/min, and post processing is bathed using in drawing-off
The method that trough inner water bathes one section of stretching, bath and draw roll and the temperature control of crimping wheel are at 50 DEG C, speed 130m/min, and the
Three stretching-machines are controlled at 50 DEG C using the method for being passed through hot water heating, roll surface temperature.
The temperature in each area of screw extruder in the embodiment 1 of table 1
| One area's temperature | Two area's temperature | Three area's temperature | Four area's temperature | Five area's temperature | |
| Low melting point PLA | 150℃ | 170℃ | 170℃ | 170℃ | 180℃ |
| PLA | 190℃ | 210℃ | 210℃ | 210℃ | 210℃ |
Obtained low melting point skin-core structure polylactic acid short-fiber is post-treated, and its physical index is as follows：
Fiber Denier：3.75d
Fibre strength g/d：2.8
Extension at break %：90
Oil applying rate：0.259
130 DEG C of hot air shrinkage, 10min：12%
Embodiment 2：Two kinds of raw materials of low melting point polylactic acid slice and polylactic acid slice are dried respectively, low melting point PLA
The drying of section uses dew point as -50 DEG C of dry air, 45 DEG C, drying time 6h of drying temperature, and section moisture content is
35ppm, the drying of polylactic acid slice uses dew point as -50 DEG C of dry air, 80 DEG C, drying time 2h of drying temperature, then drops
Low temperature balances 6h, section moisture content is 32ppm to 45 DEG C.After drying respectively after the discharge of screw extruder melt extruded,
Melt is formed, the draw ratio of screw extruder here is 1:30, the temperature in each area of screw extruder is shown in Table 2.Gathered with low melting point
For lactic acid as cortex, PLA is sandwich layer, is cut into slices according to core-sheath ratio 4:6 are measured by measuring pump, into core-skin
Construction package and spinneret, for temperature control at 180 DEG C, PLA enters temperature before casing before low melting point PLA enters casing during preceding spinning
Control in the presence of spinning manifold is extruded into thread melt at 210 DEG C from the spinneret orifice of spinning manifold, now spinning manifold
Temperature is 230 DEG C；Above-mentioned thread melt is after spinning manifold spinneret orifice extrusion, the solidification forming under the cooling of cross air blasting, then
By oiling, and the coiling and molding on winding head, now the speed of winding head is 1100m/min, and post processing is bathed using in drawing-off
The method that trough inner water bathes one section of stretching, bath and draw roll and the temperature control of crimping wheel are at 52 DEG C, speed 140m/min, and the
Three stretching-machines are controlled at 53 DEG C using the method for being passed through hot water heating, roll surface temperature.
The temperature in each area of screw extruder in the embodiment 2 of table 2
| One area's temperature | Two area's temperature | Three area's temperature | Four area's temperature | Five area's temperature | |
| Low melting point PLA | 160℃ | 180℃ | 180℃ | 185℃ | 190℃ |
| PLA | 190℃ | 210℃ | 210℃ | 220℃ | 220℃ |
Obtained low melting point skin-core structure polylactic acid short-fiber is post-treated, and its physical index is as follows：
Fiber Denier：4.00d
Fibre strength g/d：2.7
Extension at break %：95
Oil applying rate：0.265
130 DEG C of hot air shrinkage, 10min：15%
Embodiment 3：It is roughly the same with embodiment 1, except that：The drying of low melting point polylactic acid slice uses dew point
For -40 DEG C of dry air, 55 DEG C, drying time 8h of drying temperature, section moisture content is 39ppm, the drying of polylactic acid slice
Dew point is used as -40 DEG C of dry air, 95 DEG C, drying time 2h of drying temperature, then reduces temperature to 55 DEG C, 6h is balanced, cuts
Piece moisture content is 40ppm.Melt is formed after the discharge of screw extruder melt extruded respectively after drying, screw extruder
Draw ratio is 1:36.Using low melting point PLA as cortex, PLA is sandwich layer, is cut into slices according to core-sheath ratio 6:4 pass through
Measuring pump is measured, and into skin-core structure component and spinneret, temperature control exists before low melting point PLA enters casing during preceding spinning
200 DEG C, temperature control is extruded at 230 DEG C in the presence of spinning manifold from the spinneret orifice of spinning manifold before PLA enters casing
Into thread melt, now the temperature of spinning manifold is 240 DEG C；Above-mentioned thread melt is after spinning manifold spinneret orifice extrusion, in side
Solidification forming under the cooling of blowing, then process oils, and the coiling and molding on winding head, and now the speed of winding head is
1100m/min, post processing is using one section of method stretched of water-bath, bath and draw roll and the temperature of crimping wheel in drawing-off bath
Control is at 55 DEG C, speed 150m/min.
Claims (6)
- A kind of 1. preparation method of low melting point skin-core structure polylactic acid short-fiber, it is characterised in that：By low melting point polylactic acid slice It is dried respectively with polylactic acid slice, using low melting point PLA as cortex, PLA is sandwich layer, and core-sheath ratio is 3: 7~6:4, two kinds of sections after melt extruded is discharged, form low melting point polylactic acid melt and conventional polylactic acid melt, then divide respectively Not after metering, spinning is prepared into bicomponent sheath cored structure acid fiber by polylactic precursor, then through boundling, stretching, curling, drying, Cut off operation prepares skin-core structure polylactic acid short-fiber.
- 2. the preparation method of low melting point skin-core structure polylactic acid short-fiber according to claim 1, it is characterised in that：It is described The drying of low melting point polylactic acid slice uses dew point as less than -40 DEG C of dry air, 45~55 DEG C of drying temperature, drying time 6~8h, control section moisture content are less than 50ppm.
- 3. the preparation method of low melting point skin-core structure polylactic acid short-fiber according to claim 1, it is characterised in that：It is described The drying of polylactic acid slice uses dew point as less than -40 DEG C of dry air, 80~95 DEG C of drying temperature, the h of drying time 2, then Temperature is reduced to 45~55 DEG C, balances 6h, control section moisture content is less than 50ppm.
- 4. the preparation method of low melting point skin-core structure polylactic acid short-fiber according to claim 1, it is characterised in that：Using Draw ratio is 1:30~36 screw extruder carries out melt extruded.
- 5. the preparation method of low melting point skin-core structure polylactic acid short-fiber according to claim 1, it is characterised in that：Spinning The temperature of the preceding low melting point PLA is 150~200 DEG C, and the temperature of the PLA is 190~230 DEG C, and spinning temperature is 220~240 DEG C.
- 6. the preparation method of low melting point skin-core structure polylactic acid short-fiber according to claim 1, it is characterised in that：Stretching Carried out in drawing-off bath in water-bath, the temperature of bath is 50~55 DEG C, and the draw roll and the speed of crimping wheel stretched is not Higher than 150m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610413962.9A CN107475808A (en) | 2016-06-14 | 2016-06-14 | A kind of preparation method of low melting point skin-core structure polylactic acid short-fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610413962.9A CN107475808A (en) | 2016-06-14 | 2016-06-14 | A kind of preparation method of low melting point skin-core structure polylactic acid short-fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107475808A true CN107475808A (en) | 2017-12-15 |
Family
ID=60594638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610413962.9A Pending CN107475808A (en) | 2016-06-14 | 2016-06-14 | A kind of preparation method of low melting point skin-core structure polylactic acid short-fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107475808A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108610515A (en) * | 2018-05-08 | 2018-10-02 | 南通联荣集团有限公司 | A kind of environment-friendly degradable container bag and preparation method thereof |
| CN108716029A (en) * | 2018-06-03 | 2018-10-30 | 上海同巽环保科技有限公司 | A kind of preparation method of compound pipe tobacco |
| CN108729022A (en) * | 2018-06-07 | 2018-11-02 | 同济大学 | A kind of degradable skin-core structure fabric nonwoven cloth and preparation method thereof |
| CN110791850A (en) * | 2019-11-29 | 2020-02-14 | 江南大学 | High-strength pulp-free polylactic acid multifilament and preparation method thereof |
| CN110938905A (en) * | 2019-11-29 | 2020-03-31 | 江南大学 | High-strength pulp-free polylactic acid yarn and preparation method thereof |
| CN111155180A (en) * | 2020-01-14 | 2020-05-15 | 北京服装学院 | Polylactic acid parallel composite fiber and preparation method thereof |
| CN113355756A (en) * | 2020-03-07 | 2021-09-07 | 东部湾(扬州)生物新材料有限公司 | Preparation method of environment-friendly composite fiber for sanitary materials |
| WO2022005725A1 (en) * | 2020-07-02 | 2022-01-06 | Dupont Industrial Biosciences Usa, Llc | A method to make bicomponent fibers and articles comprising the same |
| CN114016158A (en) * | 2021-11-23 | 2022-02-08 | 中国纺织科学研究院有限公司 | Broad PBST and polylactic acid composite fiber, preparation method and application thereof, and surgical clothing |
| CN114318667A (en) * | 2021-12-30 | 2022-04-12 | 福建恒安卫生材料有限公司 | Preparation method of super-soft biodegradable fiber non-woven fabric |
| CN114457490A (en) * | 2022-03-23 | 2022-05-10 | 合肥工业大学 | Waterproof breathable polylactic acid fiber fabric with core-shell structure |
| CN114561716A (en) * | 2022-03-23 | 2022-05-31 | 合肥工业大学 | Anti-dripping flame-retardant polylactic acid fiber and preparation method thereof |
| CN114808273A (en) * | 2022-04-14 | 2022-07-29 | 深圳全棉时代科技有限公司 | PLA mixed cotton spunlaced filler and production process thereof |
| CN115182099A (en) * | 2022-07-25 | 2022-10-14 | 苏州贝彩纳米科技有限公司 | Preparation method and application of bi-component degradable elastic polylactic acid spun-bonded non-woven material |
| CN115386990A (en) * | 2022-08-26 | 2022-11-25 | 东华大学 | Continuous production system of porous skin-core structure yarn |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139752A (en) * | 2006-09-06 | 2008-03-12 | 远东纺织股份有限公司 | Thermal thawing composite fiber having biological decomposability |
| CN102191587A (en) * | 2010-03-03 | 2011-09-21 | 盐城纺织职业技术学院 | Biodegradable two-component low-melting point composite fiber |
| CN105133082A (en) * | 2015-07-24 | 2015-12-09 | 北京普利玛科技有限责任公司 | Low-melting-point sheath-core-type polylactic acid composite fiber and preparation method thereof |
-
2016
- 2016-06-14 CN CN201610413962.9A patent/CN107475808A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139752A (en) * | 2006-09-06 | 2008-03-12 | 远东纺织股份有限公司 | Thermal thawing composite fiber having biological decomposability |
| CN102191587A (en) * | 2010-03-03 | 2011-09-21 | 盐城纺织职业技术学院 | Biodegradable two-component low-melting point composite fiber |
| CN105133082A (en) * | 2015-07-24 | 2015-12-09 | 北京普利玛科技有限责任公司 | Low-melting-point sheath-core-type polylactic acid composite fiber and preparation method thereof |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108610515A (en) * | 2018-05-08 | 2018-10-02 | 南通联荣集团有限公司 | A kind of environment-friendly degradable container bag and preparation method thereof |
| CN108716029A (en) * | 2018-06-03 | 2018-10-30 | 上海同巽环保科技有限公司 | A kind of preparation method of compound pipe tobacco |
| CN108729022A (en) * | 2018-06-07 | 2018-11-02 | 同济大学 | A kind of degradable skin-core structure fabric nonwoven cloth and preparation method thereof |
| CN110791850A (en) * | 2019-11-29 | 2020-02-14 | 江南大学 | High-strength pulp-free polylactic acid multifilament and preparation method thereof |
| CN110938905A (en) * | 2019-11-29 | 2020-03-31 | 江南大学 | High-strength pulp-free polylactic acid yarn and preparation method thereof |
| CN111155180A (en) * | 2020-01-14 | 2020-05-15 | 北京服装学院 | Polylactic acid parallel composite fiber and preparation method thereof |
| CN113355756A (en) * | 2020-03-07 | 2021-09-07 | 东部湾(扬州)生物新材料有限公司 | Preparation method of environment-friendly composite fiber for sanitary materials |
| WO2022005725A1 (en) * | 2020-07-02 | 2022-01-06 | Dupont Industrial Biosciences Usa, Llc | A method to make bicomponent fibers and articles comprising the same |
| CN114016158A (en) * | 2021-11-23 | 2022-02-08 | 中国纺织科学研究院有限公司 | Broad PBST and polylactic acid composite fiber, preparation method and application thereof, and surgical clothing |
| CN114318667A (en) * | 2021-12-30 | 2022-04-12 | 福建恒安卫生材料有限公司 | Preparation method of super-soft biodegradable fiber non-woven fabric |
| CN114457490A (en) * | 2022-03-23 | 2022-05-10 | 合肥工业大学 | Waterproof breathable polylactic acid fiber fabric with core-shell structure |
| CN114561716A (en) * | 2022-03-23 | 2022-05-31 | 合肥工业大学 | Anti-dripping flame-retardant polylactic acid fiber and preparation method thereof |
| CN114457490B (en) * | 2022-03-23 | 2023-09-26 | 合肥工业大学 | Waterproof breathable polylactic acid fiber fabric with core-shell structure |
| CN114561716B (en) * | 2022-03-23 | 2024-01-30 | 合肥工业大学 | Anti-dripping flame-retardant polylactic acid fiber and preparation method thereof |
| CN114808273A (en) * | 2022-04-14 | 2022-07-29 | 深圳全棉时代科技有限公司 | PLA mixed cotton spunlaced filler and production process thereof |
| CN115182099A (en) * | 2022-07-25 | 2022-10-14 | 苏州贝彩纳米科技有限公司 | Preparation method and application of bi-component degradable elastic polylactic acid spun-bonded non-woven material |
| CN115386990A (en) * | 2022-08-26 | 2022-11-25 | 东华大学 | Continuous production system of porous skin-core structure yarn |
| CN115386990B (en) * | 2022-08-26 | 2023-08-29 | 东华大学 | Continuous production system of porous skin core structure yarn |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107475808A (en) | A kind of preparation method of low melting point skin-core structure polylactic acid short-fiber | |
| CN1942619B (en) | Fibers, nonwovens and articles containing nanofibers produced from high glass transition temperature polymers | |
| JP5325842B2 (en) | Fibers, nonwovens and articles containing nanofibers made from broad molecular weight distribution polymers | |
| CN105133082A (en) | Low-melting-point sheath-core-type polylactic acid composite fiber and preparation method thereof | |
| CN103074739B (en) | Production method for polypropylene spun-bonded needle-punched geotextile | |
| CN104727015A (en) | Manufacturing method for melt-blown nonwoven fabric | |
| CN107475893A (en) | Super soft infant is with wet method spun lacing composite non-weaving cloth and production method | |
| US20030129909A1 (en) | Nonwoven barrier fabrics with enhanced barrier to weight performance | |
| CN105887224A (en) | Method for preparing skin-core type composite polylactic acid tows for cigarettes by one-step method | |
| CN103820872A (en) | Figured sea-island ultrafine fiber, preparing method and process method of synthetic leather of figured sea-island ultrafine fiber | |
| WO2022048369A1 (en) | Phbv material-blended antibacterial and antiviral es fiber and preparation method therefor | |
| CN110359129A (en) | A kind of preparation method of more micropore skin-core structure bicomponent composite fibres | |
| JP2016507012A (en) | A bat made of crimped bicomponent or multicomponent fibers | |
| CN106988019A (en) | Many component bio-based PLA spun-bonded hot rolling non-woven fabrics production lines and production technology | |
| CN110318117A (en) | A kind of health high fluffy PE-PET composite fibre and preparation method thereof | |
| CN109385750A (en) | A kind of preparation method of biodegradable polylactic acid non-woven fabrics | |
| CN106435781A (en) | Moisture-absorption breathable linen chinlon type fiber and preparing method thereof | |
| CN110387640A (en) | A kind of fluorescent nonwoven fabric and preparation method thereof for health product | |
| CN101787581A (en) | Ultrafine fiber based on recycled polyester and production method thereof | |
| CN105951197B (en) | Three component odd-shaped cross section composite hollow viscoelastic fibre manufacturing techniques, equipment and products thereof | |
| CN104451919A (en) | Production technology for orderly dacron bamboo node yarns of identical specification | |
| CN104313721B (en) | A kind of low-melting point hot adhesion polyamide fiber long filament and preparation method thereof | |
| CN106835506A (en) | A kind of Thief zone high elongation rate non-woven fabric composite material and preparation method thereof | |
| CN103789926A (en) | Sea-island type spunbond filament non-woven material and manufacturing method thereof | |
| CN206783919U (en) | More component bio-based PLA spun-bonded hot rolling non-woven fabric production lines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171215 |