CN106906538B - Polypropylene filament, polypropylene filament needle-punched reverse-filtration geotextile and preparation method - Google Patents
Polypropylene filament, polypropylene filament needle-punched reverse-filtration geotextile and preparation method Download PDFInfo
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- CN106906538B CN106906538B CN201710096577.0A CN201710096577A CN106906538B CN 106906538 B CN106906538 B CN 106906538B CN 201710096577 A CN201710096577 A CN 201710096577A CN 106906538 B CN106906538 B CN 106906538B
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- 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
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
- D01F11/06—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- D04H3/007—Addition polymers
-
- 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
- D04H3/016—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the fineness
-
- 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
- D04H3/10—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 yarns or filaments made mechanically
- D04H3/105—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 yarns or filaments made mechanically by needling
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/063—Load-responsive characteristics high strength
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/04—Filters
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/20—Industrial for civil engineering, e.g. geotextiles
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nonwoven Fabrics (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention provides a polypropylene filament, a polypropylene filament needle-punched reverse filtration geotextile and a preparation method thereof, belongs to the technical field of spinning, and can solve the problems of easy clogging, poor reverse filtration effect and low breaking strength of the existing geotextile. The polypropylene filament of the invention forms a lubricant on the outer surface of the filamentous polypropylene main body so as to improve the mechanical property of the polypropylene filament and prevent the polypropylene filament from being broken in the needle punching process for forming the geotextile. The polypropylene filament needle-punched reverse filtration geotextile comprises two layers of fiber nets with different fineness to form two-stage reverse filtration; the equivalent aperture is large, clogging is not easy to occur, and the reverse filtration function can be effectively realized; the acid and alkali resistance is strong, and the pH value is not influenced at all under the condition of 2-13; the mechanical property is excellent, the longitudinal and transverse strength reaches 15kN/m, and in addition, the bursting strength and the tearing strength of the geotextile exceed those of polyester geotextile. The polypropylene filament needle-punched reverse filtration geotextile is suitable for a reverse filtration layer of a highway.
Description
Technical Field
The invention belongs to the technical field of spinning, and particularly relates to a polypropylene filament, a polypropylene filament needle-punched reverse-filtration geotextile and a preparation method thereof.
Background
At present, the highway engineering generally uses polyester geotextile as a reverse filter layer. The back filtration means that the soil particles under osmotic pressure are kept from flowing away while the liquid is allowed to pass through. Reverse filtration is known because of the opposite direction of the filtered water flow. In the prior art, the short-thread needle-punched geotextile can replace the traditional gravel material reverse filter layer and has the advantages of reduced engineering quantity, convenient construction, high speed and the like.
The inventor finds that at least the following problems exist in the prior art: the fineness of the monofilament/fiber of the polyester geotextile is about 3D, and the diameter of the monofilament is too thin, so that the equivalent aperture of the geotextile is small, and the reverse filtration effect is poor; when the monofilament of the polyester geotextile is more than 5D, the strength of the monofilament/fiber is low, and the breaking strength of the geotextile cannot meet the design requirement of the highway. The equivalent aperture of the polyester geotextile is smaller, the design requirement of a highway cannot be met, the surface of the geotextile is silted up easily, the reverse filtration cannot be realized, even water cannot be discharged after silting up, the accumulated water of the highway is caused, and the landslide is seriously caused.
Disclosure of Invention
The invention provides a polypropylene filament for a highway, a polypropylene filament needle-punched reverse filtration geotextile and a preparation method thereof, aiming at the problems of easy clogging, poor reverse filtration effect and low breaking strength of the existing geotextile.
The technical scheme adopted for solving the technical problem of the invention is as follows:
A polypropylene filament comprising a filamentous polypropylene body having a lubricant on an outer surface of the polypropylene body.
The lubricant is used for improving the mechanical property of the filamentous polypropylene main body and preventing the polypropylene filaments from being broken in the subsequent needling process.
Preferably, the lubricant comprises any one or a mixture of several of a smoothing agent, an antistatic agent and an emulsifier.
preferably, the weight ratio of the smoothing agent to the antistatic agent to the emulsifier is (65-75) to (17-23) to (8-12).
The invention also provides polypropylene filament needle-punched reverse filtration geotextile, which comprises a surface layer fiber net and a bottom layer fiber net, wherein the surface layer fiber net and the bottom layer fiber net are both formed by the polypropylene filaments.
Preferably, the polypropylene filaments of the surface layer fiber web have a thickness of 9 to 11D, and the polypropylene filaments of the bottom layer fiber web have a thickness of 6 to 8D.
Preferably, the longitudinal and transverse tensile strength of the polypropylene filament needle-punched reverse filtration geotextile is more than 15kN/m, and the equivalent pore diameter of the polypropylene filament needle-punched reverse filtration geotextile is more than 0.15 mm.
the invention also provides a preparation method of the polypropylene filament needle-punched reverse filtration geotextile, which comprises the following preparation steps:
Heating a polypropylene raw material to form a melt, melting and extruding the melt, and forming a filamentous polypropylene main body through a spinning assembly;
Spraying a lubricant to the filamentous polypropylene main body to obtain polypropylene filaments, and drafting and swinging the polypropylene filaments to form a surface layer fiber web and a bottom layer fiber web;
And carrying out needling and heat setting on the surface layer fiber net and the bottom layer fiber net to obtain the polypropylene filament needle-punched reverse filtration geotextile.
Wherein the polypropylene raw material is polypropylene slices, and the isotactic index of the polypropylene slices is more than or equal to 95 percent.
Preferably, the weight ratio of the lubricant sprayed onto the polypropylene filaments to the polypropylene filaments is (7-9): 100.
preferably, the melt extrusion temperature is 230 to 250 ℃ and the melt flow rate is 19 to 25g/10 min.
Preferably, the surface fiber web draft multiple is 2.8-3.3 times; the drafting multiple of the bottom layer fiber web is 3.7-4.3 times.
Wherein, if the polypropylene filament is too thick, the appearance of the product is not good, and the breaking strength of the product of the thick filament is smaller than that of the product of the thin filament. If the polypropylene filaments are too fine, the filtration performance of the product is affected.
Preferably, the total needling density is 110-170/cm2The depth of the acupuncture is 10-12 cm.
Preferably, the heat-setting temperature is 100 to 102 ℃.
Preferably, the polypropylene filament needle-punched reverse filter geotextile is applied in an environment with a pH of 2-13.
The polypropylene filament of the invention forms the lubricant on the outer surface of the filamentous polypropylene main body, thus improving the mechanical property of the polypropylene filament and preventing the polypropylene filament from being broken in the needle punching process of forming the geotextile. The polypropylene filament needle-punched reverse filtration geotextile comprises two layers of fiber nets with different fineness, so that two-stage reverse filtration is formed, and the reverse filtration effect is good; the equivalent aperture is large, the test value reaches 0.15mm, the clogging is not easy to happen, and the reverse filtration function can be effectively realized; the acid and alkali resistance is strong, and the pH value is not influenced at all under the condition of 2-13; the mechanical property is excellent, the longitudinal and transverse strength reaches 15kN/m, and in addition, the bursting strength and the tearing strength of the geotextile exceed those of polyester geotextile. The polypropylene filament needle-punched reverse filtration geotextile is suitable for a reverse filtration layer of a highway.
drawings
FIG. 1 is a schematic structural view of polypropylene filaments of example 1 of the present invention;
fig. 2 is a schematic flow chart of the preparation process of the polypropylene filament needle-punched reverse filter geotextile of example 2 of the present invention;
Wherein the reference numerals are: 1. polypropylene filaments; 11. a polypropylene body; 12. and (3) a lubricant.
Detailed Description
in order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1:
The present embodiment provides a polypropylene filament 1, as shown in fig. 1, comprising a filamentous polypropylene body 11, wherein the outer surface of the polypropylene body 11 is provided with a lubricant 12.
the polypropylene filament 1 of the present embodiment is formed with the lubricant 12 on the outer surface of the filamentous polypropylene body 11, and the lubricant in the present embodiment functions to improve the mechanical properties of the polypropylene filament 1 and prevent the polypropylene filament 1 from being broken during the needle punching process for forming geotextile.
the lubricant 12 may be coated or wrapped on the outer surface of the polypropylene body in a sprayed or soaked manner, fig. 1 shows a case where the lubricant 12 is coated on the outer surface of the polypropylene body 11, and it is understood that a case where the lubricant 12 is coated on a portion of the outer surface of the polypropylene body 11 is also included in the protection scope of the present invention.
Preferably, the lubricant comprises any one or a mixture of several of a smoothing agent, an antistatic agent and an emulsifier. More preferably, the weight ratio of the smoothing agent to the antistatic agent to the emulsifier is (65-75): 17-23): 8-12.
That is, the lubricant in this embodiment is a mixture of several additives, such as a smoothing agent, an antistatic agent, and an emulsifier, wherein the weight ratio of the smoothing agent, the antistatic agent, and the emulsifier can be adjusted according to the specific process.
example 2:
The embodiment provides a polypropylene filament needle-punched reverse-filtration geotextile and a preparation method thereof, and the preparation method comprises the following preparation steps:
(1) Polypropylene slices (PPH-Y24 in China petrochemical Jinan refinery) with the isotactic index of more than or equal to 95% are heated at 230 ℃ to form a melt, the melt flow rate is 22g/10min, and the melt is melted and extruded to form a filamentous polypropylene main body through a spinning pack.
(2) Spraying a lubricant to the filamentous polypropylene main body to obtain polypropylene filaments with certain strength, wherein the weight ratio of the lubricant sprayed to the polypropylene filaments is 8.0: 100, wherein the monofilament strength of the polypropylene filament is more than 2.5 cn/dtex; drawing the polypropylene filaments through a drawing system and arranging the filaments to form a surface fiber web and a bottom fiber web; wherein the drafting multiple of the polypropylene filaments of the surface layer fiber web is 3.0 times, and the fineness of the polypropylene filaments of the surface layer fiber web is 11D; the drafting multiple of the polypropylene filaments of the bottom layer fiber web is 4.0 times, and the fineness of the polypropylene filaments is 8D.
(3) The surface layer fiber web and the bottom layer fiber web are subjected to needling and heat setting at 102 ℃ to obtain the fiber web with the gram weight of 200g/m2The polypropylene filament needle-punched reverse filtration geotextile. Wherein the total needling density is 150/cm2The depth of the needle penetration was 12 mm.
Example 3:
The embodiment provides a polypropylene filament needle-punched reverse-filtration geotextile and a preparation method thereof, and the preparation method comprises the following preparation steps:
(1) heating polypropylene slices at 250 ℃ to form a melt, wherein the melt flow rate is 19g/10min, and melting, extruding and passing the melt through a spinneret to form a filamentous polypropylene main body.
(2) Spraying a lubricant to the filamentous polypropylene main body to obtain polypropylene filaments with certain strength, wherein the weight ratio of the lubricant sprayed to the polypropylene filaments is 8.2: 100, wherein the monofilament strength of the polypropylene filament is more than 2.5 cn/dtex; drawing the polypropylene filaments through a drawing system and arranging the filaments to form a surface fiber web and a bottom fiber web; wherein the drafting multiple of the polypropylene filaments of the surface layer fiber web is 3.1 times, and the fineness of the polypropylene filaments of the surface layer fiber web is 10D; the drafting multiple of the polypropylene filaments of the bottom layer fiber web is 4.1 times, and the fineness of the polypropylene filaments is 7D.
(3) The surface layer fiber web and the bottom layer fiber web are subjected to needling and heat setting at 101 ℃ to obtain the fiber web with the gram weight of 203g/m2The polypropylene filament needle-punched reverse filtration geotextile. Wherein the total density of needling is 130/cm2The depth of the needle penetration is 11 mm.
Example 4:
the embodiment provides a polypropylene filament needle-punched reverse-filtration geotextile and a preparation method thereof, and the preparation method comprises the following preparation steps:
(1) heating the polypropylene slices at 240 ℃ to form a melt, wherein the melt flow rate is 25g/10min, and melting and extruding the melt to form a filamentous polypropylene main body through a spinneret assembly.
(2) spraying a lubricant to the filamentous polypropylene main body to obtain polypropylene filaments with certain strength, wherein the weight ratio of the lubricant sprayed to the polypropylene filaments is 7: 100, wherein the monofilament strength of the polypropylene filament is more than 2.5 cn/dtex; drawing the polypropylene filaments through a drawing system and arranging the filaments to form a surface fiber web and a bottom fiber web; wherein the drafting multiple of the polypropylene filaments of the surface layer fiber web is 3.3 times, and the fineness of the polypropylene filaments of the surface layer fiber web is 9D; the drafting multiple of the polypropylene filaments of the bottom layer fiber web is 4.3 times, and the fineness of the polypropylene filaments is 6D.
(3) The surface layer fiber web and the bottom layer fiber web are subjected to needling and heat setting at 100 ℃ to obtain the fiber web with the gram weight of 205g/m2The polypropylene filament needle-punched reverse filtration geotextile. Wherein the total needling density is 110/cm2The depth of the needle penetration is 10 mm.
Comparative example
The comparative example provides a geotextile having a similar preparation method to the polypropylene filament needle-punched reverse filter geotextile of example 2, which is different from example 2 in that no lubricant is added in step (2).
The polypropylene filament needle-punched reverse filtration geotextiles of examples 2-4 and comparative example were tested according to the national standard GB/T17639-2008, and the results are shown in Table 1.
TABLE 1
the polypropylene filament needle-punched reverse filtration geotextiles of the embodiments 2 to 4 are used in an environment with a pH value of 2 to 13, the polypropylene filament needle-punched reverse filtration geotextile is not influenced at all, can be used for a long time, and can completely meet the use requirements when being used for a highway reverse filtration layer.
Example 5:
The embodiment provides a polypropylene filament needle-punched reverse-filtration geotextile and a preparation method thereof, and the preparation method comprises the following preparation steps:
(1) Heating the polypropylene slices at 240 ℃ to form a melt, wherein the melt flow rate is 25g/10min, and melting and extruding the melt to form a filamentous polypropylene main body through a spinneret assembly.
(2) Spraying a lubricant to the filamentous polypropylene main body to obtain polypropylene filaments with certain strength, wherein the weight ratio of the lubricant sprayed to the polypropylene filaments is 9: 100, wherein the monofilament strength of the polypropylene filament is more than 2.5 cn/dtex; drawing the polypropylene filaments through a drawing system and arranging the filaments to form a surface fiber web and a bottom fiber web; wherein the drafting multiple of the polypropylene filaments of the surface layer fiber web is 2.8 times, and the fineness of the polypropylene filaments of the surface layer fiber web is 9D; the drafting multiple of the polypropylene filaments of the bottom layer fiber web is 3.7 times, and the fineness of the polypropylene filaments is 6D.
(3) The surface layer fiber web and the bottom layer fiber web are subjected to needling and heat setting at 100 ℃ to obtain the fiber web with the gram weight of 204g/m2the polypropylene filament needle-punched reverse filtration geotextile. Wherein the total density of needling is 170/cm2The depth of the needle penetration is 10 mm.
Obviously, many variations are possible in the specific implementation of the above-described embodiments; for example: the specific weight proportion of the raw materials can be adjusted according to the needs, and the specific process parameters can be changed according to the needs of products.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (7)
1. The polypropylene filament needle-punched reverse-filtration geotextile is characterized by comprising a surface layer fiber net and a bottom layer fiber net, wherein the surface layer fiber net and the bottom layer fiber net are both formed by polypropylene filaments; the polypropylene filaments comprising a filamentous polypropylene body having a lubricant on an outer surface thereof; the longitudinal and transverse tensile strength of the polypropylene filament needle-punched reverse filtration geotextile is more than 15kN/m, and the total needle-punched density of the polypropylene filament needle-punched reverse filtration geotextile is 110-170/cm2and the needling depth is 10-12cm, so that the equivalent pore diameter of the polypropylene filament needle-punched reverse filter geotextile is larger than 0.15 mm.
2. The polypropylene filament needle-punched reverse filter geotextile of claim 1, wherein the lubricant comprises any one or a mixture of a smoothing agent, an antistatic agent and an emulsifier.
3. The polypropylene filament needle-punched reverse filter geotextile of claim 2, wherein the weight ratio of the smoothing agent to the antistatic agent to the emulsifier is (65-75) to (17-23) to (8-12).
4. The polypropylene filament needle punched reverse filter geotextile of claim 1, wherein the polypropylene filament thickness of the top layer web is from 9 to 11D and the polypropylene filament thickness of the bottom layer web is from 6 to 8D.
5. A method for preparing the polypropylene filament needle-punched reverse filter geotextile of any one of claims 1 to 4, comprising the following preparation steps:
heating a polypropylene raw material to form a melt, melting and extruding the melt, and forming a filamentous polypropylene main body through a spinning assembly;
Spraying a lubricant to the filamentous polypropylene main body to obtain polypropylene filaments, and drafting and swinging the polypropylene filaments to form a surface layer fiber web and a bottom layer fiber web;
And carrying out needling and heat setting on the surface layer fiber net and the bottom layer fiber net to obtain the polypropylene filament needle-punched reverse filter geotextile, wherein the total needling density is 110-170/cm2The depth of the acupuncture is 10-12 cm.
6. a method for preparing a polypropylene filament needle punched reverse filter geotextile according to claim 5, wherein the weight ratio of the lubricant sprayed to the filamentous polypropylene body to the polypropylene body is (7-9): 100.
7. The method for preparing the polypropylene filament needle-punched reverse filter geotextile of claim 5, wherein the surface layer fiber web draft ratio is 2.8-3.3 times; the drafting multiple of the bottom layer fiber web is 3.7-4.3 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710096577.0A CN106906538B (en) | 2017-02-22 | 2017-02-22 | Polypropylene filament, polypropylene filament needle-punched reverse-filtration geotextile and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710096577.0A CN106906538B (en) | 2017-02-22 | 2017-02-22 | Polypropylene filament, polypropylene filament needle-punched reverse-filtration geotextile and preparation method |
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| CN106906538A CN106906538A (en) | 2017-06-30 |
| CN106906538B true CN106906538B (en) | 2019-12-13 |
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| CN115897070B (en) * | 2023-01-06 | 2023-07-28 | 天鼎丰聚丙烯材料技术有限公司 | Polypropylene filament antibacterial filtering geotextile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057871A (en) * | 1990-07-02 | 1992-01-15 | 普律费尔特有限公司 | The manufacturing technique of needles spundondeds |
| CN1268987A (en) * | 1996-10-09 | 2000-10-04 | 赫尔克里士公司 | East lubricants as hydrophobic fiber finishes |
| CN1444673A (en) * | 2000-06-13 | 2003-09-24 | 出光统一科技株式会社 | Spunbonded nonwoven fabric and absorbent article |
| CN1528960A (en) * | 2003-10-20 | 2004-09-15 | 华南理工大学 | Color-fixing polypropylene fiber dyed-yarn preparing method |
| CN102965850A (en) * | 2012-11-18 | 2013-03-13 | 大连恒大高新材料开发有限公司 | Polypropylene fiber spunbond needle-punched geotextile |
-
2017
- 2017-02-22 CN CN201710096577.0A patent/CN106906538B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057871A (en) * | 1990-07-02 | 1992-01-15 | 普律费尔特有限公司 | The manufacturing technique of needles spundondeds |
| CN1268987A (en) * | 1996-10-09 | 2000-10-04 | 赫尔克里士公司 | East lubricants as hydrophobic fiber finishes |
| CN1444673A (en) * | 2000-06-13 | 2003-09-24 | 出光统一科技株式会社 | Spunbonded nonwoven fabric and absorbent article |
| CN1528960A (en) * | 2003-10-20 | 2004-09-15 | 华南理工大学 | Color-fixing polypropylene fiber dyed-yarn preparing method |
| CN102965850A (en) * | 2012-11-18 | 2013-03-13 | 大连恒大高新材料开发有限公司 | Polypropylene fiber spunbond needle-punched geotextile |
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