CN102454046A - Method for manufacturing high-strength needling nonwoven geotextiles - Google Patents
Method for manufacturing high-strength needling nonwoven geotextiles Download PDFInfo
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- CN102454046A CN102454046A CN2010105176596A CN201010517659A CN102454046A CN 102454046 A CN102454046 A CN 102454046A CN 2010105176596 A CN2010105176596 A CN 2010105176596A CN 201010517659 A CN201010517659 A CN 201010517659A CN 102454046 A CN102454046 A CN 102454046A
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Abstract
The invention discloses a method for manufacturing high-strength needling nonwoven geotextiles. The method comprises the steps of loosening fibers, blending the fibers, carding the fibers into a mesh, spreading the mesh, needling the mesh, carrying out heat setting on the needled mesh and winding the finished product. According to the invention, a heat setting procedure is additionally increased in the traditional process for manufacturing staple fiber needling nonwoven geotextiles; residual stresses, which are accumulated within the fibers and the geotextiles and generated in the procedures of loosening the fibers, blending the fibers, carding the fibers into the mesh, spreading the mesh as well as needling and solidifying the mesh, are eliminated through heat setting treatment so that the knot strength between the fibers is enhanced and the physical mechanical performance of the geotextile is improved and enhanced; and simple and practical process is obtained.
Description
Technical field
The invention belongs to field of textiles, relate to a kind of method of making high strength needling non-woven geotextiles.
Background technology
Geotextiles is the textiles that is applied in the civil engineering.What geotextiles mainly adopted at the application initial stage is woven and a braiding type geotextiles.Continuous development along with nonwoven techniques; Because non-weaving cloth particular structure and good characteristic; Therefore be able to develop rapidly and use in the engineering field; The non-woven geotextile that wherein is the main body with the staple fibre needle fabric is present geotextiles principal item, and this series products is one of most widely used non-woven geotextile.Compare with a braiding type geotextiles with woven, non-woven geotextile production efficiency is higher, and price is more cheap, and is functional, particularly is prone to be processed into the wide cut goods, and therefore development is swift and violent.The production technology of staple fibre needling non-woven geotextiles employing at present is that fiber becomes directly formation finished product of net, lapping, the fixed back of acupuncture through shredding mixing, combing (or air-flow); Be characterized in that thickness is big, density is high, structure is fluffy; Suction and water permeability are good, and it is convenient to lay.But the staple fibre needling non-woven geotextiles that prior art is produced also ubiquity ability of anti-deformation is poor, yielding, powerful on the low side, the shortcoming that makes the effect that is difficult to play enhancing in using.
Summary of the invention
The objective of the invention is toTo the deficiency of prior art, a kind of method of making high strength needling non-woven geotextiles is provided, can improve the intensity of staple fibre needling non-woven geotextiles with this method.
The object of the invention can be realized through following technical scheme:
A kind of method of making high strength needling non-woven geotextiles, this method may further comprise the steps: fiber opening mixing, carding, lapping, acupuncture, HEAT SETTING and finished product are reeled.
The method of above-mentioned manufacturing high strength needling non-woven geotextiles, the temperature of HEAT SETTING are controlled at and are lower than 10 ℃-30 ℃ of fiber fusing points.
The method of above-mentioned manufacturing high strength needling non-woven geotextiles, the mode of its described HEAT SETTING are outer infrared typing or hot blast typing, are preferably the hot blast typing.
The method of above-mentioned manufacturing high strength needling non-woven geotextiles, its described staple fibre is terylene or polypropylene short fiber.
Beneficial effect of the present invention:
Handle the elimination fiber through HEAT SETTING and become the residual stress that accumulates in fiber and geotextiles inside that produces in net, lapping, the fixed operation of acupuncture through shredding mixing, combing (or air-flow); Improve the interfibrous intensity of colluding with; Improve its physical and mechanical properties, thereby improve geotextiles whole DIMENSIONAL STABILITY and mechanical strength (TENSILE STRENGTH, TEAR STRENGTH, bursting strength).Technology is simple, practical.
Description of drawings
The roller frame sketch map that Fig. 1 penetrates for setting machine hot blast of the present invention.
Wherein: 1-cylinder; 2-hole; 3-air exhauster.
The specific embodiment
Embodiment 1
1, technological process
Fiber opening mixing → combing (or air-flow) becomes net → lapping → acupuncture → HEAT SETTING → finished product to reel.
Fiber opening mixes: fibrous raw material is loosened, make big fiber block, fibrous mass disassociation, make fiber obtain to mix uniformly;
Carding: the mixed ready little flock of shredding is carded to the thin net that filament is formed through carding machine;
Lapping: will carry out laying by the thin fibre web that carding machine from level to level is carded to increase the surface density and the thickness of nonwoven product through the lapping machine;
Acupuncture: the needing machine through pricker is housed carries out repeated localised puncture to fibre web, makes the fiber needle-punched non-woven that forms entangled to each other in the fibre web;
HEAT SETTING: the HEAT SETTING mode adopts the hot blast typing, through heat setting machine non-weaving cloth is heat-treated; The HEAT SETTING process is accomplished on setting machine.Setting machine has the cylinder that hot blast penetrates, and the structure of cylinder is seen Fig. 1, and cylinder 1 is a hollow-core construction; One end has air exhauster 3, and cylinder 1 surface has equally distributed hole 2, makes hot blast pass through hole 2 and gets into drum; Under the effect of air exhauster 3, make hot blast 2 form circulative convection with drum in the hole; Non-weaving cloth moves around cylinder under the deflector roll guiding, penetrates at hot blast and is issued to the typing purpose.At the edge of cylinder pin band or cloth clamp are housed, operating selvedge is fixed on pin band or the cloth clamp, prevent the irregular contraction of non-weaving cloth fabric width.The general selection principle of heating-up temperature of hot blast typing is to be lower than 10～30 ℃ of fiber fusing points.Existing geotextiles is generally used terylene (PET) or polypropylene fibre (PP) staple fibre; Terylene (PET) (fusing point 255-265 ℃) staple fibre geotextiles heat setting temperature and time are 230～250 ℃, 30～120S, and polypropylene fibre (PP) (fusing point 160-175 ℃) staple fibre geotextiles heat setting temperature and time are 130～150 ℃, 30～120S.
Finished product is reeled: the acupuncture geotextiles that HEAT SETTING is accomplished is accomplished coiling through coiler device.
2, description of the process
Because the present invention increases heat-setting process existing production on the staple fibre needling non-woven geotextiles technology basis, therefore, only explains with regard to heat setting process here.
HEAT SETTING is to process geotextiles at the fiber web that following a kind of fiber of the situation that does not add any low melting point viscose fibre constitutes.HEAT SETTING is exactly the brute force of non-weaving cloth and the process of DIMENSIONAL STABILITY of under uniform temperature and time conditions, improving; In the HEAT SETTING process; Because the change of fiber supramolecular structure and morphosis; Unsettled construction unit is changed into than the stable structure unit, make non-weaving cloth obtain certain form, and eliminate fibroreticulate internal stress.
Fiber web is in production and process, and fiber receives various external force effects and is tightened up, and the tension degree is either large or small.Therefore, there is potential internal stress in fiber web, and having only provides enough heat energy that it can be moved freely to fiber could to eliminate internal stress.Therefore, the selection of heat setting temperature is particularly important, and fibroreticulate setting temperature scope is according to the difference of kinds of fibers and difference.General selection principle is to be lower than 10～30 ℃ of fiber fusing points.Certainly the HEAT SETTING effect not only depends on setting temperature, also depends on shaping time; Shaping time is relevant with the typing mode again, and is also relevant with the fiber web weight per unit area, and the big needed shaping time of weight per unit area is also long.
Table 1: HEAT SETTING experiment effect (raw material: terylene, surface density: 300 g/m
2)
Can improve geotextiles whole DIMENSIONAL STABILITY and mechanical strength by the provable HEAT SETTING step that in the technological process of manufacturing needles non-woven geotextiles, increases of table 1 experimental result.
Claims (5)
1. a method of making high strength needling non-woven geotextiles is characterized in that this method may further comprise the steps: fiber opening, mixing, carding, lapping, acupuncture, HEAT SETTING and finished product coiling.
2. the method for manufacturing high strength needling non-woven geotextiles according to claim 1, the temperature that it is characterized in that HEAT SETTING is controlled at and is lower than 10 ℃-30 ℃ of fiber fusing points.
3. according to the method for any described manufacturing high strength needling non-woven geotextiles in claim 1 or 2, the mode that it is characterized in that described HEAT SETTING is outer infrared typing or hot blast typing.
4. the method for manufacturing high strength needling non-woven geotextiles according to claim 3 is characterized in that described HEAT SETTING mode is the hot blast typing.
5. according to the method for any described manufacturing high strength needling non-woven geotextiles in claim 1 or 2, it is characterized in that described fiber is terylene or polypropylene short fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010517659.6A CN102454046B (en) | 2010-10-25 | 2010-10-25 | Method for manufacturing high-strength needling nonwoven geotextiles |
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| CN201010517659.6A CN102454046B (en) | 2010-10-25 | 2010-10-25 | Method for manufacturing high-strength needling nonwoven geotextiles |
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| CN102454046A true CN102454046A (en) | 2012-05-16 |
| CN102454046B CN102454046B (en) | 2014-04-02 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074739A (en) * | 2013-01-29 | 2013-05-01 | 大连华阳化纤科技有限公司 | Production method for polypropylene spun-bonded needle-punched geotextile |
| CN103243482A (en) * | 2013-05-30 | 2013-08-14 | 山东爱地高分子材料有限公司 | High-strength non-woven fabric |
| CN103361882A (en) * | 2013-05-29 | 2013-10-23 | 仪征易力土工合成材料有限公司 | Production technology of staple fiber needle punched geotextile |
| CN105398149A (en) * | 2015-11-17 | 2016-03-16 | 华北水利水电大学 | Sodium base bentonite waterproof blanket and preparation method thereof |
| CN105506897A (en) * | 2015-11-27 | 2016-04-20 | 应城市恒达工业用呢有限公司 | Oil heat settling treatment method of metallurgical filter cloth |
| CN107401155A (en) * | 2016-12-06 | 2017-11-28 | 青海富腾生态科技有限公司 | The improved process and base fabric cracking resistance experimental provision of a kind of waterproof anticracking base fabric |
| CN107700072A (en) * | 2017-10-24 | 2018-02-16 | 武汉纺织大学 | A kind of negative pressure needle-punching method of aramid fiber/glass mat |
| CN108978030A (en) * | 2017-06-01 | 2018-12-11 | 无锡市振基土工材料有限公司 | A kind of production technology of degradable geotextile |
| CN109267236A (en) * | 2017-07-17 | 2019-01-25 | 无锡市振基土工材料有限公司 | A kind of acupuncture nonwoven geotextiles and preparation method thereof |
| CN109811419A (en) * | 2019-01-31 | 2019-05-28 | 天鼎丰聚丙烯材料技术有限公司 | A kind of waterproof anticracking base fabric and its manufacturing method |
| CN111058191A (en) * | 2019-12-25 | 2020-04-24 | 山东省金业土工材料有限公司 | High-strength short fiber needle-punched geotextile and preparation method thereof |
| CN112853624A (en) * | 2020-12-30 | 2021-05-28 | 天鼎丰聚丙烯材料技术有限公司 | Special polypropylene filament needle-punched drainage geotextile for tunnel, preparation method and preparation system |
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| CN1804179A (en) * | 2005-11-23 | 2006-07-19 | 周永斌 | Special nonwoven fabric and its production process |
| CN101307528A (en) * | 2008-02-29 | 2008-11-19 | 东莞市莲盈棉制品有限公司 | Fire retardant cotton nonwoven fabrics and manufacture method thereof |
-
2010
- 2010-10-25 CN CN201010517659.6A patent/CN102454046B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804179A (en) * | 2005-11-23 | 2006-07-19 | 周永斌 | Special nonwoven fabric and its production process |
| CN101307528A (en) * | 2008-02-29 | 2008-11-19 | 东莞市莲盈棉制品有限公司 | Fire retardant cotton nonwoven fabrics and manufacture method thereof |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074739B (en) * | 2013-01-29 | 2015-06-03 | 大连华阳化纤科技有限公司 | Production method for polypropylene spun-bonded needle-punched geotextile |
| CN103074739A (en) * | 2013-01-29 | 2013-05-01 | 大连华阳化纤科技有限公司 | Production method for polypropylene spun-bonded needle-punched geotextile |
| CN103361882A (en) * | 2013-05-29 | 2013-10-23 | 仪征易力土工合成材料有限公司 | Production technology of staple fiber needle punched geotextile |
| CN103361882B (en) * | 2013-05-29 | 2016-03-09 | 仪征易力土工合成材料有限公司 | A kind of chopped fiber needle-punched geotextiles production technology |
| CN103243482A (en) * | 2013-05-30 | 2013-08-14 | 山东爱地高分子材料有限公司 | High-strength non-woven fabric |
| CN105398149A (en) * | 2015-11-17 | 2016-03-16 | 华北水利水电大学 | Sodium base bentonite waterproof blanket and preparation method thereof |
| CN105506897A (en) * | 2015-11-27 | 2016-04-20 | 应城市恒达工业用呢有限公司 | Oil heat settling treatment method of metallurgical filter cloth |
| CN107401155A (en) * | 2016-12-06 | 2017-11-28 | 青海富腾生态科技有限公司 | The improved process and base fabric cracking resistance experimental provision of a kind of waterproof anticracking base fabric |
| CN108978030A (en) * | 2017-06-01 | 2018-12-11 | 无锡市振基土工材料有限公司 | A kind of production technology of degradable geotextile |
| CN109267236A (en) * | 2017-07-17 | 2019-01-25 | 无锡市振基土工材料有限公司 | A kind of acupuncture nonwoven geotextiles and preparation method thereof |
| CN107700072A (en) * | 2017-10-24 | 2018-02-16 | 武汉纺织大学 | A kind of negative pressure needle-punching method of aramid fiber/glass mat |
| CN109811419A (en) * | 2019-01-31 | 2019-05-28 | 天鼎丰聚丙烯材料技术有限公司 | A kind of waterproof anticracking base fabric and its manufacturing method |
| CN109811419B (en) * | 2019-01-31 | 2021-09-03 | 天鼎丰聚丙烯材料技术有限公司 | Waterproof and anti-cracking base cloth and manufacturing method thereof |
| CN111058191A (en) * | 2019-12-25 | 2020-04-24 | 山东省金业土工材料有限公司 | High-strength short fiber needle-punched geotextile and preparation method thereof |
| CN111058191B (en) * | 2019-12-25 | 2022-04-01 | 山东省金业土工材料有限公司 | High-strength short fiber needle-punched geotextile and preparation method thereof |
| CN112853624A (en) * | 2020-12-30 | 2021-05-28 | 天鼎丰聚丙烯材料技术有限公司 | Special polypropylene filament needle-punched drainage geotextile for tunnel, preparation method and preparation system |
| CN112853624B (en) * | 2020-12-30 | 2022-12-06 | 天鼎丰聚丙烯材料技术有限公司 | Special polypropylene filament needle-punched drainage geotextile for tunnel, preparation method and preparation system |
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| CN102454046B (en) | 2014-04-02 |
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