CN106757791A - Non-woven fabric and its preparation technology based on polytetrafluoroethylene film - Google Patents
Non-woven fabric and its preparation technology based on polytetrafluoroethylene film Download PDFInfo
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- CN106757791A CN106757791A CN201611272563.1A CN201611272563A CN106757791A CN 106757791 A CN106757791 A CN 106757791A CN 201611272563 A CN201611272563 A CN 201611272563A CN 106757791 A CN106757791 A CN 106757791A
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- 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
- D04H3/002—Inorganic yarns or filaments
-
- 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
- D04H3/002—Inorganic yarns or filaments
- D04H3/004—Glass yarns or filaments
-
- 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
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
-
- 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
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a kind of non-woven fabric based on polytetrafluoroethylene film and its preparation technology, including Teflon membranes, the Teflon membranes are carried out into biaxial tension after acupuncture, using repeated puncture and the mode of biaxial tension, make Teflon membranes fibrillation, filament is combined in the form of tangling, and is compressed, and forms the non-woven fabric based on polytetrafluoroethylene (PTFE).Preparation technology：(1) get the raw materials ready；(2) laying；(3) acupuncture；(4) stretch；(5) Repeated Acupuncture and stretching；(6) wind.Non-woven fabric prepared by non-woven fabric and its preparation technology based on polytetrafluoroethylene film of the invention, one-shot forming is manufactured, making the overall mechanical properties of non-woven fabric strengthens, not only there is tearing strength higher, tensile break strength, bursting strength, and with good permeable, permeability, application field is extensive.
Description
Technical field
The present invention relates to field of nonwoven fabric technology, more particularly to a kind of new nothing for being based on polytetrafluoroethylene film
Spin cloth and its preparation technology.
Background technology
Can prepare the material of simple tension film for ultra-high molecular weight polyethylene, PTFE, polypropylene, PPS (polyphenylene sulfide),
P84 (polyimides), wherein, PTFE is the english abbreviation of polytetrafluoroethylene (PTFE), is the king of plastics generally acknowledged in the world at present, is had
Ultra-violet radiation resisting, resistant to chemical etching, the advantages of wearability, polytetrafluoroethylene fibre chemical stability is fabulous, and corrosion resistance is excellent
In other synthetic fibers kinds；Fiber surface has wax sense, and coefficient of friction is small；Meanwhile, also with preferable against weather and anti-crawl agentdefiection
Qu Xing.
Non-woven fabrics is defined as non-weaving cloth again, is made up of fiber orient or random, is environment-friendly materials of new generation,
With moistureproof, ventilative, flexible, light weight, not combustion-supporting, easy decomposition, nontoxic nonirritant, rich color, cheap, recyclable
The features such as using again.It is raw material more as used polypropylene (pp materials) pellet, is batched continuously through high-temperature fusion, spinneret, paving guiding principle, hot pressing
One-step production is formed.Cloth is called because of the outward appearance with cloth and some performances.Realized in the U.S. from nineteen forty-two early start
After industrialization production, because it has, low cost, products application big compared with conventional woven cloth simple production process, yield extensively etc.
Feature, nowadays, it has also become emerging field with the fastest developing speed in textile industry.Non-woven fabrics can be divided into by processing method difference：
Spun-bonded non-woven fabrics, spunlace non-woven cloth, heat seal non-woven fabrics, wet nonwoven fabrics, needle punched non-woven fabrics etc..Non-woven fabrics has many functionally
Excellent properties, purposes is extremely extensive, can be divided into according to its purposes：Clothes non-woven fabrics, furniture decoration/household non-woven fabrics,
Non-woven fabrics for medical healthcare, filtering material non-woven fabrics etc..
With the increasingly rapid development of national economy, construction quality requirement of the country to infrastructure is increasingly stricter, to improve
The quality of national basis facility, such as agricultural, industry, health care, civil engineering, high-speed railway, highway, cross a river bridge
Earth working material science and technology is greatly developed Deng, country, makes great efforts to improve the intensity and quality of earth working material.Wherein nonwoven cloth material is main
Research object, methods that domestic many patents propose different enhancing non-woven fabrics, but all relatively complicated and there is certain disadvantage
End, Chinese patent such as filed in 1 day June in 2012 of Jinjiang City Gang Yi fibres Co., Ltd《A kind of composite acupuncture nonwoven
Cloth》, be laid on warp knitting cloth between two-layer nonwoven web by Patent No. 201220256454.1, then with the mode of acupuncture
It is made compound nonwoven cloth, this mode is to improve non-woven fabrics by the way of have woven or knitted fabric and nonwoven web compound
Overall mechanical properties, so on the one hand improve manufacturing cost, the addition of another aspect woven fabric or knitted fabric has a strong impact on
The good characteristic of non-woven fabrics water-permeable and air permeable in itself, and the rate of utilization of strength of fiber is relatively low.Wang Changyi was in October 30 in 2008
Chinese patent filed in day《A kind of method for producing nonwoven gridding reinforced composite nonwoven fabrics》, Patent No.
200810154952.3, a kind of mode of non-woven mesh is employed to strengthen non-woven fabrics, this problem is effectively solved, fill
Point make use of the intensity of reinforcing fiber, efficiency is higher, but the method can only pair warp and weft both direction strengthened, for it
The non-woven fabrics of the upward intensity requirement of other party is not applied to also, and interlayer is molded by the way of bonding, and resistance to overturning is poor.
The content of the invention
For defect present in prior art or deficiency, the present invention innovatively proposes a kind of based on polytetrafluoroethylene (PTFE)
The non-woven fabric and its preparation technology of film, one-shot forming manufacture, making the overall mechanical properties of non-woven fabric strengthens, not only
With tearing strength higher, tensile break strength, bursting strength, and with good permeable, permeability.
The technical proposal of the invention is realized in this way：
A kind of non-woven fabric based on polytetrafluoroethylene film, including Teflon membranes, by the polytetrafluoroethyl-ne
Alkene film layer carries out biaxial tension after acupuncture, using repeated puncture and the mode of biaxial tension, makes Teflon membranes fibrillation, fine
Dimension silk is combined in the form of tangling, and is compressed, and forms the non-woven fabric based on polytetrafluoroethylene (PTFE).
Preferably, the needling density of the Teflon membranes is 50-600 pins/square centimeter.
Preferably, one or two in metal fiber wire or glass fiber are mixed with the non-woven fabric.
Preferably, the shared percentage by weight of polytetrafluoroethylene fibre silk in the composition filament is 10-100%, institute
Percentage by weight shared by metal fiber wire is stated for 0-35%, percentage by weight shared by the glass fiber is 0-55%.
Preferably, the elongated fibers of a diameter of 0.003-0.03mm of the polytetrafluoroethylene fibre silk, the metal is fine
Tie up the elongated fibers of a diameter of 0.005-0.05mm of silk, the elongated fibre of a diameter of 0.004-0.04mm of the glass fiber
Dimension.
Preferably, the polytetrafluoroethylene fibre silk constituted in non-woven fabric is the continuous fiber filament not cut off,
The filament length, the filametntary length is 10-2000mm.
The invention also discloses a kind of preparation technology of the non-woven fabric based on polytetrafluoroethylene film, including following step
Suddenly：
(1), get the raw materials ready：According to Production requirement, poly tetrafluoroethylene is prepared according to quantity；
(2), laying：Poly tetrafluoroethylene is stacked on request；
(3), acupuncture：It is the pricker that triangle and seamed edge are pierced with hook using section, by the polytetrafluoro of step (1) heap poststack
Vinyl film carries out acupuncture, and the needling density of the poly tetrafluoroethylene is 50-600 pins/square centimeter, forms fibrillated polytetrafluoroethylene
After dimension silk, continue acupuncture, the needling density of the polytetrafluoroethylene fibre silk is 100-300 pins/square centimeter, when several thorns
When being needled into filament, the hook thorn on pricker can pass through filament layer by layer with some fibers of filament surface with pricker,
Mutually tangle, in the presence of frictional force, compressed filament, form filament stratum reticulare；
(4), stretch：After being needled into predetermined needling density, the filament stratum reticulare after compression is carried out into stretch processing, stretched
It is 5-50% to strain, and under conditions of rate of extension is 50-5000 mm/mins, is stretched along direction；
(5), Repeated Acupuncture and stretching：After filament stratum reticulare is stretched in one direction, then acupuncture is carried out, the filament
The needling density of stratum reticulare is 50-350 pins/square centimeter, and during acupuncture, filament departs from hook thorn and rests on fiber in the vertical state
In silk screen layer, after repeating stretching and acupuncture so that compressed filament stratum reticulare no longer restores to the original state, according to production need
Ask, reach default density for 0.2-2.5 grams/cm, form the non-woven fabric based on poly tetrafluoroethylene；
(6), wind：The obtained non-woven fabric based on poly tetrafluoroethylene of step (5) is wound into packing.
Preferably, a kind of preparation technology of the non-woven fabric based on polytetrafluoroethylene film, comprises the following steps：
(1), get the raw materials ready：According to Production requirement, poly tetrafluoroethylene according to quantity；
(2), laying：Poly tetrafluoroethylene is stacked on request；
(3), acupuncture：It is the pricker that triangle and seamed edge are pierced with hook using section, by the polytetrafluoro of step (1) heap poststack
Vinyl film carries out acupuncture, and the needling density of the poly tetrafluoroethylene is 350 pins/square centimeter, forms polytetrafluoroethylene fibre
After silk, continue acupuncture, the needling density of the polytetrafluoroethylene fibre silk is 200 pins/square centimeter, when several prickers are pierced into
During filament, the hook thorn on pricker can mutually entangle with some fibers of filament surface with pricker through filament layer by layer
Twine, in the presence of frictional force, compressed filament, form filament stratum reticulare；
(4), stretch：After being needled into predetermined needling density, the filament stratum reticulare after compression is carried out into stretch processing, stretched
It is 30% to strain, and under conditions of rate of extension is 3500 mm/mins, is stretched along direction；
(5), Repeated Acupuncture and stretching：After filament stratum reticulare is stretched in one direction, then acupuncture is carried out, the filament
The needling density of stratum reticulare is 240 pins/square centimeter, and during acupuncture, filament departs from hook thorn and rests on filament in the vertical state
In stratum reticulare, after repeating stretching and acupuncture so that compressed filament stratum reticulare no longer restores to the original state, according to production need
Ask, reach default density for 1.5 grams/cm, form the non-woven fabric based on poly tetrafluoroethylene；
(6), wind：The obtained non-woven fabric based on poly tetrafluoroethylene of step (5) is wound into packing.
Preferably, the stretching mode in the step (4), (5) can be replaced biaxial tension, by filament stratum reticulare in stretching
It is 5-50% to strain, and under conditions of rate of extension is 50-5000 mm/mins, is first stretched along direction, then further along
Another direction stretches.
Preferably, in 0.2-20dtex, strength scope is in 2.5- for the Denier range of the polytetrafluoroethylene fibre silk
6.5cN/dtex。
Compared with prior art, the beneficial effects of the present invention are：
A kind of non-woven fabric and its preparation technology based on polytetrafluoroethylene film, the polytetrafluoroethyl-ne after laying layer by layer
On alkene film, after pinprick reinforcement and stretching, formation non-woven fabric is one-shot forming manufacture, makes the body force of non-woven fabric
Performance enhancement is learned, not only with tearing strength higher, tensile break strength, bursting strength, and with of good quality, good
Permeable, permeability, application field is extensive.
Specific embodiment
With reference to specific embodiment, technical scheme is clearly and completely described, it is clear that retouched
The embodiment stated is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to the present invention
The scope of protection.
A kind of non-woven fabric based on polytetrafluoroethylene film, including Teflon membranes, by the polytetrafluoroethyl-ne
Alkene film layer carries out biaxial tension after acupuncture, using repeated puncture and the mode of biaxial tension, makes Teflon membranes fibrillation, fine
Dimension silk is combined in the form of tangling, and is compressed, and forms the non-woven fabric based on polytetrafluoroethylene (PTFE), wherein, polytetrafluoroethylene (PTFE)
Fiber film layer carries out acupuncture after-drawing, using repeated puncture and the mode of stretching, makes polytetrafluoroethylfiber fiber film layer fibrillation, its
In, the needling density of polytetrafluoroethylfiber fiber film layer is 50-600 pins/square centimeter；Metallic fiber is mixed with non-woven fabric
One or two in silk or glass fiber, the polytetrafluoroethylene fibre shared percentage by weight of silk in composition filament is
10-100%, percentage by weight shared by the metal fiber wire is 0-35%, and percentage by weight shared by the glass fiber is
0-55%, polytetrafluoroethylene fibre silk a diameter of 0.003-0.03mm elongated fibers, the metal fiber wire it is a diameter of
The elongated fibers of 0.005-0.05mm, the elongated fibers of a diameter of 0.004-0.04mm of the glass fiber；Constitute new
Polytetrafluoroethylene fibre silk in non-woven fabrics is the continuous fiber filament not cut off, the filament length, the fiber
The length of silk is 10-2000mm.
The invention also discloses a kind of preparation technology of the non-woven fabric based on polytetrafluoroethylene film, including following step
Suddenly：
(1), get the raw materials ready：According to Production requirement, poly tetrafluoroethylene is prepared according to quantity；
(2), laying：Poly tetrafluoroethylene is stacked on request；
(3), acupuncture：It is the pricker that triangle and seamed edge are pierced with hook using section, by the polytetrafluoro of step (1) heap poststack
Vinyl film carries out acupuncture, and the needling density of the poly tetrafluoroethylene is 50-600 pins/square centimeter, forms fibrillated polytetrafluoroethylene
After dimension silk, continue acupuncture, the needling density of the polytetrafluoroethylene fibre silk is 100-300 pins/square centimeter, when several thorns
When being needled into filament, the hook thorn on pricker can pass through filament layer by layer with some fibers of filament surface with pricker,
Mutually tangle, in the presence of frictional force, compressed filament, form filament stratum reticulare；
(4), stretch：After being needled into predetermined needling density, the filament stratum reticulare after compression is carried out into stretch processing, stretched
It is 5-50% to strain, and under conditions of rate of extension is 50-5000 mm/mins, is stretched along direction；
(5), Repeated Acupuncture and stretching：After filament stratum reticulare is stretched in one direction, then acupuncture is carried out, the filament
The needling density of stratum reticulare is 50-350 pins/square centimeter, and during acupuncture, filament departs from hook thorn and rests on fiber in the vertical state
In silk screen layer, after repeating stretching and acupuncture so that compressed filament stratum reticulare no longer restores to the original state, according to production need
Ask, reach default density for 0.2-2.5 grams/cm, form the non-woven fabric based on poly tetrafluoroethylene；
(6), wind：The obtained non-woven fabric based on poly tetrafluoroethylene of step (5) is wound into packing.
Preferably, the preparation technology of the non-woven fabric based on polytetrafluoroethylene (PTFE), the stretching side in the step (4), (5)
Formula can be replaced biaxial tension, by filament stratum reticulare elongation strain be 5-50%, rate of extension be 50-5000 mm/mins
Under conditions of, first stretched along a direction, then stretched further along another direction.
Preferably, in 0.2-20dtex, strength scope is in 2.5- for the Denier range of the polytetrafluoroethylene fibre silk
6.5cN/dtex。
Embodiment 1：
A kind of preparation technology of the non-woven fabric based on polytetrafluoroethylene film, comprises the following steps：
(1), get the raw materials ready：According to Production requirement, poly tetrafluoroethylene is prepared according to quantity；
(2), laying：Poly tetrafluoroethylene is stacked on request；
(3), acupuncture：It is the pricker that triangle and seamed edge are pierced with hook using section, by the polytetrafluoro of step (1) heap poststack
Vinyl film carries out acupuncture, and the needling density of the poly tetrafluoroethylene is 50 pins/square centimeter, forms polytetrafluoroethylene fibre
Silk, in 0.5dtex, strength scope continues acupuncture, described poly- four to the Denier range of polytetrafluoroethylene fibre silk in 4.5cN/dtex
The filametntary needling density of PVF is 100 pins/square centimeter, when several prickers are pierced into filament, the hook thorn on pricker
Can mutually be tangled with some fibers of filament surface with pricker through filament layer by layer, in the presence of frictional force, made
Filament is compressed, and forms filament stratum reticulare；
(4), stretch：After being needled into predetermined needling density, the filament stratum reticulare after compression is carried out into stretch processing, stretched
It is 5% to strain, and under conditions of rate of extension is 50 mm/mins, is stretched along direction；
(5), Repeated Acupuncture and stretching：After filament stratum reticulare is stretched in one direction, then acupuncture is carried out, the filament
The needling density of stratum reticulare is 50 pins/square centimeter, and during acupuncture, filament departs from hook thorn and rests on fibre web in the vertical state
In layer, after repeating stretching and acupuncture so that compressed filament stratum reticulare no longer restores to the original state, according to Production requirement,
Default density is reached for 0.2 gram/cm, forms the non-woven fabric based on polytetrafluoroethylene (PTFE)；
(6), wind：The obtained non-woven fabric based on polytetrafluoroethylene (PTFE) of step (5) is wound into packing.
Embodiment 2：
A kind of preparation technology of the non-woven fabric based on polytetrafluoroethylene film, comprises the following steps：
(1), get the raw materials ready：According to Production requirement, poly tetrafluoroethylene is prepared according to quantity；
(2), laying：Poly tetrafluoroethylene is stacked on request；
(3), acupuncture：It is the pricker that triangle and seamed edge are pierced with hook using section, by the polytetrafluoro of step (1) heap poststack
Vinyl film carries out acupuncture, and the needling density of the poly tetrafluoroethylene is 350 pins/square centimeter, forms polytetrafluoroethylene fibre
Silk, in 15dtex, strength scope continues acupuncture, described poly- four to the Denier range of polytetrafluoroethylene fibre silk in 3.5cN/dtex
The filametntary needling density of PVF is 200 pins/square centimeter, when several prickers are pierced into filament, the hook thorn on pricker
Can mutually be tangled with some fibers of filament surface with pricker through filament layer by layer, in the presence of frictional force, made
Filament is compressed, and forms filament stratum reticulare；
(4), biaxial tension：After being needled into predetermined needling density, the filament stratum reticulare after compression is carried out into stretch processing,
Elongation strain is 30%, under conditions of rate of extension is 3500 mm/mins, is first stretched along direction, then further along
Another direction stretches；
(5), Repeated Acupuncture and biaxial tension：By filament stratum reticulare bidirectional square to stretching after, then carry out acupuncture, the fiber
The needling density of silk screen layer is 240 pins/square centimeter, and during acupuncture, filament departs from hook thorn and rests on fiber in the vertical state
In silk screen layer, after repeating stretching and acupuncture so that compressed filament stratum reticulare no longer restores to the original state, according to production need
Ask, reach default density for 1.5 grams/cm, form the non-woven fabric based on polytetrafluoroethylene (PTFE).
(6), winding：The obtained non-woven fabric based on polytetrafluoroethylene (PTFE) of step (5) is wound into packing.
Embodiment 3：
A kind of preparation technology of the non-woven fabric based on polytetrafluoroethylene film, comprises the following steps：
(1), get the raw materials ready：According to Production requirement, poly tetrafluoroethylene is prepared according to quantity；
(2), laying：Poly tetrafluoroethylene is stacked on request；
(3), acupuncture：It is the pricker that triangle and seamed edge are pierced with hook using section, by the polytetrafluoro of step (1) heap poststack
Vinyl film carries out acupuncture, and the needling density of the poly tetrafluoroethylene is 600 pins/square centimeter, forms polytetrafluoroethylene fibre
Silk, in 20dtex, strength scope continues acupuncture, described poly- four to the Denier range of polytetrafluoroethylene fibre silk in 4.0cN/dtex
The filametntary needling density of PVF is 300 pins/square centimeter, when several prickers are pierced into filament, the hook thorn on pricker
Can mutually be tangled with some fibers of filament surface with pricker through filament layer by layer, in the presence of frictional force, made
Filament is compressed, and forms filament stratum reticulare；
(4), stretch：After being needled into predetermined needling density, the filament stratum reticulare after compression is carried out into stretch processing, stretched
It is 50% to strain, and under conditions of rate of extension is 5000 mm/mins, is stretched along direction；
(5), Repeated Acupuncture and stretching：After filament stratum reticulare is stretched in one direction, then acupuncture is carried out, the filament
The needling density of stratum reticulare is 350 pins/square centimeter, and during acupuncture, filament departs from hook thorn and rests on filament in the vertical state
In stratum reticulare, after repeating stretching and acupuncture so that compressed filament stratum reticulare no longer restores to the original state, according to production need
Ask, reach default density for 2.5 grams/cm, form the non-woven fabric based on polytetrafluoroethylene (PTFE)；
(6), wind：The obtained non-woven fabric based on polytetrafluoroethylene (PTFE) of step (5) is wound into packing.
The preferred embodiment of invention is the foregoing is only, is not intended to limit the invention, it is all in spirit of the invention
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of non-woven fabric based on polytetrafluoroethylene film, it is characterised in that including Teflon membranes, will be described
Teflon membranes carry out biaxial tension after acupuncture, using repeated puncture and the mode of biaxial tension, make poly tetrafluoroethylene
Layer fibrillation, filament is combined in the form of tangling, is compressed, and forms the non-woven fabric based on polytetrafluoroethylene (PTFE).
2. the non-woven fabric based on polytetrafluoroethylene film according to claim 1, it is characterised in that the polytetrafluoro
The needling density of vinyl film is 50-600 pins/square centimeter.
3. the non-woven fabric based on polytetrafluoroethylene film according to claim 2, it is characterised in that the new nothing
Spin one or two that be mixed with cloth in metal fiber wire or glass fiber.
4. the non-woven fabric based on polytetrafluoroethylene film according to claim 3, it is characterised in that the composition is fine
The shared percentage by weight of polytetrafluoroethylene fibre silk in dimension silk is 10-100%, percentage by weight shared by the metal fiber wire
It is 0-35%, percentage by weight shared by the glass fiber is 0-55%.
5. the non-woven fabric based on polytetrafluoroethylene film according to claim 4, it is characterised in that the polytetrafluoro
The elongated fibers of a diameter of 0.003-0.03mm of vinyl fiber silk, a diameter of 0.005-0.05mm's of the metal fiber wire
Elongated fibers, the elongated fibers of a diameter of 0.004-0.04mm of the glass fiber.
6. the non-woven fabric based on polytetrafluoroethylene film according to claim 1, it is characterised in that the composition is new
Polytetrafluoroethylene fibre silk in type non-woven fabrics is the continuous fiber filament not cut off, the filament length, the fibre
The length for tieing up silk is 10-2000mm.
7. the preparation technology of the non-woven fabric based on polytetrafluoroethylene film according to claim any one of 1-6, its
It is characterised by, comprises the following steps：
(1), get the raw materials ready：According to Production requirement, poly tetrafluoroethylene is prepared according to quantity；
(2), laying：Poly tetrafluoroethylene is stacked on request；
(3), acupuncture：It is the pricker that triangle and seamed edge are pierced with hook using section, by the polytetrafluoroethylene (PTFE) of step (1) heap poststack
Film carries out acupuncture, and the needling density of the poly tetrafluoroethylene is 50-600 pins/square centimeter, forms polytetrafluoroethylene fibre silk
Afterwards, acupuncture is continued, the needling density of the polytetrafluoroethylene fibre silk is 100-300 pins/square centimeter, when several prickers thorn
When entering filament, the hook thorn on pricker can pass through filament layer by layer with some fibers of filament surface with pricker, mutually
Tangle, in the presence of frictional force, compressed filament, form filament stratum reticulare；
(4), stretch：After being needled into predetermined needling density, the filament stratum reticulare after compression is carried out into stretch processing, elongation strain
It is 5-50%, under conditions of rate of extension is 50-5000 mm/mins, is stretched along a direction；
(5), Repeated Acupuncture and stretching：After filament stratum reticulare is stretched in one direction, then acupuncture is carried out, the filament stratum reticulare
Needling density be 50-350 pins/square centimeter, during acupuncture, filament depart from hook thorn rest on fibre web in the vertical state
In layer, after repeating stretching and acupuncture so that compressed filament stratum reticulare no longer restores to the original state, according to Production requirement,
Default density is reached for 0.2-2.5 grams/cm, forms the non-woven fabric based on poly tetrafluoroethylene；
(6), wind：The obtained non-woven fabric based on poly tetrafluoroethylene of step (5) is wound into packing.
8. the preparation technology of the non-woven fabric based on polytetrafluoroethylene film according to claim 7, it is characterised in that
Comprise the following steps：
(1), get the raw materials ready：According to Production requirement, poly tetrafluoroethylene according to quantity；
(2), laying：Poly tetrafluoroethylene is stacked on request；
(3), acupuncture：It is the pricker that triangle and seamed edge are pierced with hook using section, by the polytetrafluoroethylene (PTFE) of step (1) heap poststack
Film carries out acupuncture, and the needling density of the poly tetrafluoroethylene is 350 pins/square centimeter, after forming polytetrafluoroethylene fibre silk,
Continue acupuncture, the needling density of the polytetrafluoroethylene fibre silk is 200 pins/square centimeter, when several prickers are pierced into fiber
During silk, the hook thorn on pricker can mutually be tangled with some fibers of filament surface with pricker through filament layer by layer,
In the presence of frictional force, filament is compressed, form filament stratum reticulare；
(4), stretch：After being needled into predetermined needling density, the filament stratum reticulare after compression is carried out into stretch processing, elongation strain
It is 30%, under conditions of rate of extension is 3500 mm/mins, is stretched along direction；
(5), Repeated Acupuncture and stretching：After filament stratum reticulare is stretched in one direction, then acupuncture is carried out, the filament stratum reticulare
Needling density be 240 pins/square centimeter, during acupuncture, filament depart from hook thorn rest on filament stratum reticulare in the vertical state
It is interior, after repeating stretching and acupuncture so that compressed filament stratum reticulare no longer restores to the original state, and according to Production requirement, reaches
It is 1.5 grams/cm to default density, forms the non-woven fabric based on poly tetrafluoroethylene；
(6), wind：The obtained non-woven fabric based on poly tetrafluoroethylene of step (5) is wound into packing.
9. the preparation technology of the non-woven fabric based on polytetrafluoroethylene film according to any one of claim 7 or 8,
Characterized in that, the stretching mode in the step (4), (5) can be replaced biaxial tension, by filament stratum reticulare in elongation strain
It is 5-50%, rate of extension is under conditions of 50-5000 mm/mins, elder generation stretches along a direction, then further along another
Individual direction stretching.
10. the preparation technology of the non-woven fabric based on polytetrafluoroethylene film according to any one of claim 7 or 8,
Characterized in that, the Denier range of the polytetrafluoroethylene fibre silk is in 0.2-20dtex, strength scope is in 2.5-6.5cN/
dtex。
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Cited By (1)
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| CN114089705A (en) * | 2021-11-16 | 2022-02-25 | 紫罗兰家纺科技股份有限公司 | Non-woven fabric processing technology control method and system |
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