CN109667069A - One kind adhesive-bonded fabric and its manufacturing method made of spunbonded non-woven fabric and application - Google Patents
One kind adhesive-bonded fabric and its manufacturing method made of spunbonded non-woven fabric and application Download PDFInfo
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- CN109667069A CN109667069A CN201710955480.0A CN201710955480A CN109667069A CN 109667069 A CN109667069 A CN 109667069A CN 201710955480 A CN201710955480 A CN 201710955480A CN 109667069 A CN109667069 A CN 109667069A
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- Prior art keywords
- adhesive
- bonded fabric
- fabric according
- bonding agent
- melting point
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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
- D04H3/005—Synthetic yarns or filaments
- D04H3/009—Condensation or reaction polymers
- D04H3/011—Polyesters
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/016—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
- D04H3/11—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 fluid jet
-
- 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
- D04H3/12—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 filaments or yarns secured together by chemical or thermo-activatable bonding agents, e.g. adhesives, applied or incorporated in liquid or solid form
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
It is especially used for as enhancing or reinforcement material come adhesive-bonded fabric applying, made of spunbonded non-woven fabric, highly stable light the present invention relates to a kind of, the adhesive-bonded fabric includes the layer that at least one is made of the synthetic filaments that melting is spun, the long filament is reinforced by means of high energy water jet, the adhesive-bonded fabric is characterized in that, the adhesive-bonded fabric includes heat-activatable bonding agent, and the bonding agent is coated on the layer being made of melting spinning filament in the form of at least one thin layer.Furthermore the invention further relates to a kind of methods for manufacturing this adhesive-bonded fabric.
Description
The adhesive-bonded fabric that the present invention relates to a kind of made of spunbonded non-woven fabric, highly stable light, the on-woven
Object includes the layer that at least one is made of the synthetic filaments that melting is spun, and the synthetic filaments are reinforced by means of high energy water jet.
Furthermore the application of the method and the adhesive-bonded fabric that the invention further relates to a kind of for manufacturing this adhesive-bonded fabric.
The adhesive-bonded fabric that the object of the present invention is to provide a kind of made of spunbonded non-woven fabric, highly stable light,
The adhesive-bonded fabric is not only characterized as high-tenacity but also is further characterized as high initial modulus (Anfangmodul).High initial modulus
A possibility that initial tensile and thus caused shrinkage in width are reduced in common industrial processes step.
The purpose in this way realize by a kind of adhesive-bonded fabric made of spunbonded non-woven fabric: the adhesive-bonded fabric
The layer being made of including at least one synthetic filaments that melting is spun, which is characterized in that the adhesive-bonded fabric includes heat-activatable
Bonding agent, the bonding agent are coated to the layer being made of the synthetic filaments for melting spinning in the form of at least one thin layer
On, the synthetic filaments are reinforced by means of high energy water jet and the bonding agent is distributed by means of the high energy water jet,
The bonding agent includes the thermoplastic polymer of low melting point, and the thermoplastic polymer of the low melting point is relative to adhesive-bonded fabric gross weight
The weight content of amount is between 7% and 15%.
In the adhesive-bonded fabric according to the present invention made of spunbonded non-woven fabric, highly stable light, the nonwoven
Fabric includes the layer that at least one is made of the synthetic filaments that melting is spun, and the synthetic filaments are come by means of the water jet of high energy
It reinforces, the adhesive-bonded fabric includes heat-activatable bonding agent, and the bonding agent is coated in the form of at least one thin layer
On the layer being made of melting spinning filament.
When making silk thread tangle by high energy water jet, multiple very weak cohesions are formed on the cross section of adhesive-bonded fabric
In conjunction with.Each of these combinations only generated by the cohesion between face itself are all very weak, anyway always than in this way
In conjunction with silk thread intensity it is weak.If acting on the spunbond so reinforced by sufficiently high power caused by industrial processes step
On type adhesive-bonded fabric, then the weak cohesion manufactured by water jet reinforcing combines just in the case where not damaging the silk thread of composition
It is individually overloaded and shredding.When load is assigned on sufficiently wide periphery (Umgebung) and all unspoiled carrying silks
When line is directed toward along loading direction, the summation of each weak bond strength just works, and adhesive-bonded fabric just has high intensity.
Initial flexibility is shown as low initial modulus on power-stretch chart.In practical applications, it is accordingly loading
In the case of form the longitudinal stretching combined with corresponding shrinkage in width.Which hinders or sometimes even prevent this water
The application for the spunbonded non-woven fabric that jet stream is reinforced.
Therefore the raising of initial modulus becomes an especially important technical purpose.
It surprisingly shows, by the thin layer that is made of at least one bonding agent in the synthetic filaments spun by melting
Coating on the layer of composition is reinforced with water jet then, dry and bonding agent activation combines, in addition to water jet combines, also
The other combinations (or adhesive spots) being formed between spunbonded non-woven fabric long filament.That is, form the weak interior of unusual high quantity
The specific combination in conjunction with the much better than gluing of much lower quantity is closed in coalescence.
The high quantity of this very thin spunbonded non-woven fabric long filament combined each other by above-mentioned additional adhesive spots
For the adhesive-bonded fabric there is high modulus value to contribute with the dimensional stability for being sufficiently used for continuing with.According to this hair
In bright adhesive-bonded fabric, the additional measures such as tension force for dimensionally stable is not needed in continuing with.It can guess, this
Kind effect etc. is also due to, and a part of bonding agent also passes through high energy water jet and is carried until entering the relatively deep of nonwoven fabric layer
Layer in and form adhesive spots there.
The layer structure that adhesive-bonded fabric according to the present invention can be made of one or more spunbonded non-woven fabric and bonding agent
At.It may also set up other extra plays, as long as it is advantageous for various applications.
The thermoplastic polymer of especially low melting point is suitable as bonding agent, wherein it is preferred that this thermoplastic polymer,
Fusion temperature is sufficiently low compared with the fusion temperature of spunbonded non-woven fabric long filament.Preferably, the fusion temperature should compare spunbond
The fusion temperature of type adhesive-bonded fabric long filament is at least 10 DEG C low, and particularly preferably at least 20 DEG C, so that the spunbonded non-woven fabric is long
Silk is not damaged in thermal activation.
Preferably, the thermoplastic polymer of the low melting point also has wide softening range.The advantage is that the use
Making the thermoplastic polymer of bonding agent can be activated at a temperature of lower than its effective fusion point.Consider from technological standpoint, glues
It connects agent not needing absolutely to be completely melt, but it is sufficiently softened and is therefore attached on long filament to be combined just enough
?.In this way, people can adjust the conjugation between spunbonded non-woven fabric long filament and bonding agent in activation stage.
The thermoplastic polymer of the low melting point preferably substantially include polyolefin especially polyethylene, by polyethylene, poly-
Propylene accounts for the copolymer of dominant contribution, dominant contribution is accounted for by polypropylene copolymer, copolyesters especially poly terephthalic acid third
Diol ester and/or polybutylene terephthalate (PBT), the thermoplastic polymer of the low melting point further include polyamide and/or copolymerization
Amide.When selecting the polymer of suitable low melting point, the requirement of later special applications is considered.
The polymer phase of the low melting point is preferred for the weight content (Gewichtsanteil) of adhesive-bonded fabric total weight
More than or equal to 7%.If the content of hot-melt adhesive is too low, the increase of initial modulus will be too low, thereby increases and it is possible to for
The application in future can be inadequate.
Preferably, the weight content is between weight percent 9 weight % and 15 weight %.It is being more than weight percent
When 15 weight %, the combination for crossing the strong gluing of high quantity may have an adverse effect to tearing brute force.
However, using the hot-melt adhesive of the smaller content under 7% itself especially for certain applications for
It is advantageous, therefore should be included in the present invention.
The polymer of the low melting point can for example exist in the form of fiber or fibrinogen.Especially bicomponent fibre is available
Make the fiber, wherein low-melting component is heat-activatable bonding agent.
The invention enables the long filament with lesser spunbonded non-woven fabric filament linear-density can be used.Herein with small
Weight per unit area obtain good intensity and adequately covering.Preferably, fibre number is between 0.7 and 6dtex.Tool
Having has particular advantage in 1 to the fiber number between 4dtex fiber, i.e., the described fiber is not only ensured in per unit
Good face under weight covers but also has enough overall strengths.
Adhesive-bonded fabric according to the present invention preferably include made of polyester especially polyethylene terephthalate and/
Or the long filament made of polyolefin especially polypropylene.These materials are especially suitable, because the material is by volume production raw material system
At the volume production raw material, which can arrive, sentences enough amounts and enough quality to obtain.Polyester and polypropylene are due to its durability
It is all very well known in fiber and adhesive-bonded fabric manufacture.
For the particular/special requirement for technically meeting adhesive-bonded fabric, such as higher initial modulus and/or rigid and/or resistance to purple
Outward linear and/or alkali resistance, in addition to PET (polyethylene terephthalate), people can also be by PEN (poly- naphthalenedicarboxylic acid second two
Alcohol ester) and/or copolymer and/or the mixture being made of PET and PEN be used as matrix fiber polymer.Compared with PET, PEN table
Sign is higher fusing point (about+18 DEG C) and higher glass transition temperature (about+45 DEG C).
A kind of suitable method for manufacturing adhesive-bonded fabric according to the present invention comprises the following methods:
A) layer that at least one is made of synthetic filaments by means of spunbonded non-woven fabric manufacturing process laying；
B) at least one thin layer being made of heat-activatable bonding agent is coated；
C) carry out dispensed adhesive by the high-pressure water jet of high energy and reinforce spunbonded non-woven fabric long filament；
D) dry；
E) heat treatment is with activated adhesive；
The manufacture of spunbonded non-woven fabric, that is to say, that the spinning of the synthetic filaments made of different polymer is made, wherein
Further include that the spinnings of the synthetic filaments made of polypropylene or polyester is made, as in base fabric by its laying at random web one
Sample is equally the prior art.People can obtain large-sized technical equipment with 5m or bigger width from multiple companies.It is described
Equipment can have one or more spinning systems (spinning manifold) and be adjusted to desired power.It is reinforced for water jet
Spun lacing system is equally the prior art.This equipment can also be provided with big width by multiple producers.Dryer and up- coiler
It is also the same such.
Heat-activatable bonding agent can be coated by different methods, such as by powder coating, can also be with dispersion
Form.It is preferable that bonding agent is coated in the form of fiber or fibrinogen using meltblown or air laid.It is this
Method is also known and repeatedly description in the literature.
Meltblown and air laid have particular advantage, i.e. these methods can be arbitrarily and for spunbonded type on-woven
The spinning system of object long filament combines.
Water jet reinforcing should be implemented as known in DE 19821848C2, so that realizing preferably every g/
The specific longitudinal strength of m2 weight per unit area 4.3N/5cm and every g/m2 weight per unit area at least 0.45N/5cm,
The initial modulus for making tension is tested when elongation percentage is 5% in a longitudinal direction.It is ensured that spunbonded non-woven fabric is enough
The distribution good enough in spunbonded non-woven fabric layer of intensity and bonding agent.
According to the present invention, activation is interpreted as example borrowing by the polymer fusion or welding that will act as the low melting point of bonding agent
Bonding agent is helped to generate adhesive spots.It not only dries, but also the heat treatment for activation can all be implemented at such temperatures, the temperature
As low as reliably to avoid as fusion or welding and caused by spunbonded non-woven fabric long filament damage.For method economy
The reason of, the drying and the thermal activation of bonding agent preferably carry out in a method and step.
For dry and activation low melting point polymer, people can apply different dryer types, such as tenter dryer, band
Formula dryer or skin drying machine, it is preferred that roller dryer is particularly suitable.Drying temperature will be adjusted in terminal stage
The fusion temperature of substantially low melting point polymer is saved, and is optimized according to result.Especially to consider to be bonded herein
The integrally fused performance of agent.It does not need to reach physics fusing point in this bonding agent with especially wide softening range.
But seek the optimization of bond effect in softening range just enough.Thus it can avoid undesirable minor details
The problem of such as attachment of the bi-component on machine part and crossing reinforce.
Adhesive-bonded fabric according to the present invention is suitable for leading in technology due to the initial modulus of its extraordinary intensity and Qi Gao
It is applied in domain, especially as coated base fabric, reinforcing material or reinforcement material.
The present invention is elaborated by embodiment below:
Embodiment 1:
Testing equipment for manufacturing spunbonded non-woven fabric has the width of 1200mm.The testing equipment include one
The spinning-nozzle that extends on the entire width of the equipment, two be parallel to the opposite blowing wall of spinning-nozzle setting, one with
Traction gap afterwards, the traction gap expand into diffuser in lower area and form adhesive-bonded fabric into solarium.It is spun
Long filament take to form a uniform sheet material, i.e. one at the receiving aspirated from below in web area in adhesive-bonded fabric one
Spunbonded non-woven fabric.The spunbonded non-woven fabric is compressed and is wound between two rolls.
The spunbonded non-woven fabric of pre-reinforcement is de-rolled to reinforce for water jet on a testing equipment.By for gas
It flows system into the net short binder fibre thin layer is coated on its surface, then described two layers of sheet material is with multi beam high energy
Water jet is handled, and is thus tangled (spun lacing) and reinforces.The dispensed adhesive in sheet material simultaneously.Then it will reinforce
Composite nonwoven fabric it is dry in roller dryer, wherein so adjust temperature in the terminal region of dryer so that
Binder fibre is activated and leads to additional combination.
In this test, spunbonded non-woven fabric is made up of polypropylene.It is spun using on above-mentioned width with 5479
The spinning-nozzle of wire hole.The PP GRANULES of melt flow indexes (MFI) using Exxon Mobile company, with 36
(Achieve PP3155) is used as raw material.Spinning temperature is 272 DEG C.Draw the width that gap has 25mm.Filament number according to
Diameter in spunbonded non-woven fabric is measured as 2.1dtex.Manufacturing speed is adjusted to 46m/min.Generated spunbond
Type adhesive-bonded fabric has the weight per unit area of 70g/m2.In the equipment reinforced for water, first by one in air
Adhesive-bonded fabric device into the net coats the layer of the 16g/m2 of the very short bicomponent fibre of sheath core structure type in stream,
Core is made up of polypropylene and skin is made of polyethylene.The weight ratio of the component is 50/50%.Then make spunbonded type on-woven
Object is subjected to water jet reinforcing.The reinforcing is implemented with 6 beams (Balken), and the beam alternately has an impact from two sides.Institute
The hydraulic pressure setting applied respectively is as follows:
When water jet is reinforced, staple fiber is introduced into spunbonded non-woven fabric as far as possible, to make the staple fiber not
Form pure superficial layer.
Then, the spunbonded non-woven fabric crossed with water jet treatment is dried in roller dryer.Exist herein
In last region, air themperature is adjusted to 123 DEG C, so that polyethylene be made to be easy to be melted and formed thermal.Add in this way
Solid spunbonded non-woven fabric in the case where 86g/m2 weight per unit area have following mechanics value:
Certain strength in a longitudinal direction is every g/m25.95N/5cm, the specific secant modulus when elongation percentage is 5%
For every g/m20.65N/5cm.
Embodiment 2:
With on identical testing equipment described in example 1 apply polyester granulate.The polyester granulate has characteristic
Viscosity IV=0.67.It is carefully dried, to make the remaining content of water be under 0.01%, and at a temperature of 285 DEG C
It is spun into.Herein also as in example 1, the spinning-nozzle on the width of 1200mm with 5479 holes is applied.Polymer
Throughput is 320kg/h.The fiber number of 2dtex of the long filament in spunbonded non-woven fabric with an optical detecting and one low-down
Crimp contraction.Device rate is adjusted to 61m/min, to make the spunbonded non-woven fabric of pre-reinforcement with the unit plane of 72g/m2
Product weight.
The spunbonded non-woven fabric is preposition in the identical equipment reinforced for water jet.By same two-component staple fiber
In the layer laying to the surface of the spunbonded non-woven fabric of pre-reinforcement of the 16g/m2 of (PP/PE 50/50).Then the bonding nothing
The water jet reinforcing that textile fabric is advanced through with 6 beams (implement), the beam setting are as follows:
When water jet is reinforced, short binder fibre is introduced into spunbonded non-woven fabric as far as possible, to make described short viscous
Condensating fiber does not form pure superficial layer.
Then, the spunbonded non-woven fabric crossed using water jet treatment is dry in roller dryer.Herein
In last region, air themperature is adjusted to 123 DEG C, so that polyethylene be made easily to be melted and be formed thermal.Such as
The spunbonded non-woven fabric that this is reinforced is in the weight per unit area of 87g/m2 with following mechanics value:
Certain strength in a longitudinal direction is every g/m26.09N/5cm, the specific secant modulus when elongation percentage is 5%
For every g/m20.68N/5cm.
Claims (10)
1. a kind of adhesive-bonded fabric made of spunbonded non-woven fabric, the adhesive-bonded fabric includes the conjunction that at least one is spun by melting
The layer formed at long filament, which is characterized in that the adhesive-bonded fabric includes heat-activatable bonding agent, and the bonding agent is by at least
The form of one thin layer is coated on the layer being made of melting spinning filament, and the synthetic filaments are come by means of high energy water jet
It reinforces and the bonding agent is distributed by means of the high energy water jet, the bonding agent includes the thermoplasticity polymerization of low melting point
Object, the thermoplastic polymer of the low melting point relative to adhesive-bonded fabric total weight weight content between 7% and 15%.
2. adhesive-bonded fabric according to claim 1, which is characterized in that the thermoplastic polymer of the low melting point has a ratio
Low at least 10 DEG C of the fusion temperature of the fusion temperature of synthetic filaments.
3. adhesive-bonded fabric according to claim 2, which is characterized in that the thermoplastic polymer of the low melting point has a ratio
Low at least 20 DEG C of the fusion temperature of the fusion temperature of synthetic filaments.
4. adhesive-bonded fabric according to any one of claim 1 to 3, which is characterized in that the synthetic filaments have one from
0.7 to 6.0dtex fiber number.
5. adhesive-bonded fabric according to claim 4, which is characterized in that the synthetic filaments are with one from 1.0 to 4.0dtex
Fiber number.
6. adhesive-bonded fabric according to any one of claim 1 to 3, which is characterized in that the synthetic filaments by polyester,
And/or by polyethylene naphthalate, and/or by copolymer and/or by polyethylene terephthalate and poly- naphthalene diformazan
The mixture, and/or be made of polyolefin that sour glycol ester forms.
7. adhesive-bonded fabric according to claim 6, which is characterized in that the polyester is polyethylene terephthalate.
8. adhesive-bonded fabric according to claim 6, which is characterized in that the polyolefin is polypropylene.
9. adhesive-bonded fabric according to any one of claim 1 to 3, which is characterized in that the polymer matrix of the low melting point
The copolymer of important share is accounted in sheet including polyolefin, by polyethylene, polypropylene, accounts for the copolymer of important share by polypropylene,
The polymer of the low melting point further includes copolyesters, polyamide and/or copolyamide.
10. adhesive-bonded fabric according to claim 9, which is characterized in that the polyolefin is polyethylene.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710955480.0A CN109667069A (en) | 2017-10-14 | 2017-10-14 | One kind adhesive-bonded fabric and its manufacturing method made of spunbonded non-woven fabric and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710955480.0A CN109667069A (en) | 2017-10-14 | 2017-10-14 | One kind adhesive-bonded fabric and its manufacturing method made of spunbonded non-woven fabric and application |
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| CN109667069A true CN109667069A (en) | 2019-04-23 |
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| CN201710955480.0A Pending CN109667069A (en) | 2017-10-14 | 2017-10-14 | One kind adhesive-bonded fabric and its manufacturing method made of spunbonded non-woven fabric and application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910270A (en) * | 2020-07-15 | 2020-11-10 | 江阴市华宏化纤有限公司 | Direct spinning production method of cationic dyeable polyester staple fiber |
-
2017
- 2017-10-14 CN CN201710955480.0A patent/CN109667069A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910270A (en) * | 2020-07-15 | 2020-11-10 | 江阴市华宏化纤有限公司 | Direct spinning production method of cationic dyeable polyester staple fiber |
| CN111910270B (en) * | 2020-07-15 | 2022-11-29 | 江阴市华宏化纤有限公司 | Direct spinning production method of cationic dyeable polyester staple fiber |
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| WD01 | Invention patent application deemed withdrawn after publication |