CN1721618A - Manufacturing method of filtering nonwoven fabric using Teflon two-way stretchable film - Google Patents
Manufacturing method of filtering nonwoven fabric using Teflon two-way stretchable film Download PDFInfo
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- CN1721618A CN1721618A CNA2004100527976A CN200410052797A CN1721618A CN 1721618 A CN1721618 A CN 1721618A CN A2004100527976 A CNA2004100527976 A CN A2004100527976A CN 200410052797 A CN200410052797 A CN 200410052797A CN 1721618 A CN1721618 A CN 1721618A
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- teflon
- nonwoven fabric
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- ptfe film
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Abstract
This invention relates to a filter weaving cloth with iron isoflupredone double stretching film, which comprises the following steps: using needle cloth and processing the film into batt shape; then spreading the batt undone layer by layer to extensive film through cotton loosing on the film; after multi-layer actions and sending to the screw machine to form one firm and punchy non-knit materials; then making the final product through coating iron isoflupredone film into non-knit final product.
Description
Technical field
The invention provides the two-way stretched PTFE film of a kind of Teflon and filter the nonwoven fabric manufacture method, refer to especially a kind ofly make identical filtration Nonwovens but processing procedure is more simple quick, it is to utilize card clothing to open fibre and two-way stretched PTFE film is processed into flocculence; Again the crude two-way two-way stretched PTFE film of flocculence that prolongs film one deck and one deck is paved flocculence in the two-way stretched PTFE film of cloth shape really via dredging cotton, again after the lamination action via multilayer, send into needle rolling machine tailor's cushion and form a solid non-woven material that has certain brute force again, via applying Teflon film hot repressing long-pending synthesize filter nonwoven fabric finished product, thereby reach more simple, the quick effect of whole processing procedure thereafter.
Background technology
The manufacture method of the filtration nonwoven fabric of commonly using is to make earlier behind weft yarn, is woven into the longitude and latitude mesh cloth again, after two layers of cotton shape layer interlayer are the longitude and latitude mesh cloth up and down, carry out the tailor's cushion process again after, again with the Teflon film do long-pending close hot pressing after, become to filter Nonwovens.
But because need being about to earlier when weft yarn is being made of commonly using is after the Nonwovens film gives card clothing and open fine cotton-wool and change into to flocculence thing 10, again its flocculence thing is delivered to that whole twister is whole twists with the fingers silk 11, warp loom is woven into graticules 12 again, the quite loaded down with trivial details inconvenience of whole process, need to open through card clothing again to be made into byssaceous flocculence thing two layers of thin cotton about graticules after being woven into graticules, lamination flocculence thing 13, after carrying out tailor's cushion 14 processes again, long-pending 15 backs of closing of pad pasting Teflon film and hot pressing become to commonly use to make filtration nonwoven fabric finished product 16, process is very numerous and diverse, inconvenience is its shortcoming.
Summary of the invention
The present inventor is engaged in and filters nonwoven fabric and Related product manufacturing industry thereof for many years, know very well it to filter the manufacture method and the pluses and minuses thereof of nonwoven fabric, be devoted to improve its shortcoming, phase makes filtration nonwoven fabric manufacture method more practical, via for many years effort research and repeatly for studying, invent out the present invention's " the two-way stretched PTFE film filtration of Teflon nonwoven fabric manufacture method " finally.
Main purpose of the present invention promptly is to eliminate above-mentioned each shortcoming, and provides the two-way stretched PTFE film of a kind of Teflon to filter the nonwoven fabric manufacture method, and specific as follows: the two-way stretched PTFE film card clothing of a. is opened fine one-tenth flocculence thing; B. one deck flocculence thing adds the two-way stretched PTFE film of one deck and is dredged cotton, lamination; C. via tailor's cushion; D. pad pasting Teflon film.
This method need not to go knitmesh again on making, and can be directly replace graticules with the two-way stretched PTFE film of one deck, again with individual layer about the two-way stretched PTFE film or two layers of thin cotton, lamination cotton-wool, carry out with applying Teflon film again that hot pressing is long-pending closes, form it and filter the nonwoven fabric finished product, reach the simple effect fast of processing procedure.
An of the present invention purpose is to provide the two-way stretched PTFE film of a kind of Teflon to filter the nonwoven fabric manufacture method, and be specific as follows: a. film or two-way stretched PTFE film multilayer build-up; B. via tailor's cushion; C. pad pasting Teflon film; Via above-mentioned process, make and filter the nonwoven fabric finished product.
But this stretched PTFE film and multilayer and cooperate the cotton-wool of multilayer in this method, and tailor's cushion, the long-pending synthetic nonwoven fabric that filters.
Description of drawings
Fig. 1: for commonly using the flow chart that filters the nonwoven fabric manufacture method.
Fig. 2: for the two-way stretched PTFE film of Teflon of the present invention filters the flow chart of nonwoven fabric manufacture method.
Fig. 3 A: be the stereogram of card clothing.
Fig. 3 B: be the part stereogram of card clothing.
Fig. 3 C: be the cut-away view of card clothing.
Fig. 4: be the floor map of card clothing finished product.
Fig. 5: for opening fine process floor map.
Fig. 6: for dredging cotton process floor map.
Fig. 7: be the needle rolling machine floor map.
Fig. 8: be the pricker floor map.
Fig. 9: for ultrasonic wave binds floor map.
Figure 10: for the present invention filters nonwoven fabric finished product schematic perspective view.
Figure 11: for the present invention filters nonwoven fabric finished product plane cut-away view.
Figure 12: be dry type Nonwovens method schematic diagram.
Figure 13: be wet type Nonwovens method one illustration intention.
Figure 14: be another illustration intention of wet type Nonwovens method.
Figure 15: be the another embodiment of the present invention flow chart.
Figure 16: be the superimposed plane of another embodiment of the present invention film cut-away view
Figure 17 A: the schematic perspective view that splits method for the another embodiment of the present invention film.
Figure 17 B: the floor map of splitting method for the another embodiment of the present invention film.
Figure 17 C: another angle floor map of splitting method for the another embodiment of the present invention film.
Figure 17 D: the finished figure of finishing for Nonwovens of the present invention.
The specific embodiment
The invention provides the two-way stretched PTFE film of a kind of Teflon and filter the nonwoven fabric manufacture method.
Now for making it can further understand main structure design of the present invention and technology, careful conjunction with figs. is illustrated in the back:
The characteristic of the two-way stretched PTFE film of Teflon
Teflon is to use super high molecular weight, poly-tetrafluoroethylene is a raw material, form two-way stretched PTFE film through special processed, this film is watched with microscope, it presents is the composition of very tangible fiber and node, through different temperature and extension ratios, its fiber and node have clearly different, the extension of big multiplying power is not that existing fibre length is extended, but original node is split into once again, fiber and littler node, so dividing and form nano-scale fiber, be used for the processing of filter material in order to nano-scale fiber, is following trend.Therefore of the present invention focusing under the fiber condition that the two-way stretched PTFE film of Teflon promptly has:
One embodiment is:
(A) it is split into the flocculence thing of non-woven.
(B) fiber that promptly has with the two-way stretched PTFE film of this Teflon is in base material and the non-woven flocculence fiber, rolls pin, can easier finish the processing of tailor's cushion.
Another embodiment is:
(A) all be machined to nano-scale fiber processing (rolling pin) with the two-way stretched PTFE film of Teflon.
One, the processing mode of fiber:
Past Teflon fiber process mode is one-way membrane processing, is to utilize two-way Teflon stretched PTFE film as the present invention, through the card clothing high speed processing, and the non-textile fiber that produces.The heat treatment of film, clearly length that can influence fiber and shape.
A when heat treatment time long, when temperature is high, the fiber that it is left, main line and divisural line clearly the phenomenon of crispaturaing arranged, otherwise heat treatment time is short, when temperature hang down, main line and divisural line were than the nothing phenomenon of crispaturaing.
B is by the overall elongation multiplying power, and longitudinal axis extension ratio is during greater than transverse axis, clearly thin and long of the fiber that it is left, fiber, and greater than the longitudinal axis, the fiber of leaving fiber clearly is shorter, and thicker as transverse axis.
Open about angle＜63 degree of c by pin on the card clothing and knit comparatively ideal, as will then angle being increased to＜an angle of 90 degrees than long fiber, then the branch line of division can be less, and length is longer.
Two, with combine (roll into Nonwovens) of fiber with the Teflon film
Open the flocculence thing of knitting, be organized into uniform thick cotton sheet in advance, after drawing, the below is accepted by the Teflon film, and so back and forth multilayer is carried out to Nonwovens processing (rolling pin).
Its method has multiple:
The a dry method is the woven cloths method not: because Teflon is electronegative very strong, in process, must add the static elimination, all can make fiber be easier to arrangement processing (promptly not making its conglomeration) (as shown in figure 12) with bleed type or electrion formula
B wet type Nonwovens method: will open the flocculence thing that fibre goes out and directly squeeze in the liquid, and then, handle through the roll compacting blooming with diddle-net band (as shown in figure 13) or after becoming net tube (as shown in figure 14) to accept to send.
Three, split embrane method Nonwovens method:
The two-way stretched PTFE film of Teflon is used special device earlier with cross directional stretch through extraordinary roller cutter, and then longitudinal stretching extends with this farad to the limit fibre fineness with many multiples stretchings.
Teflon itself just has the ultraviolet resistance yarn processing and manufacturing, mixes with fiber and the other materials (adding certain ratio cotton, artificial fibre) of opening the Teflon after knitting, and forms anti-ultraviolet fiber, yarn or line, and can be made into cloth.
As shown in Figure 2, a kind of Teflon filters the nonwoven fabric manufacture method, mainly being to improve its manufacturing process of filtration Nonwovens of commonly using need make through weft yarn, after making mesh cloth, the process of netting can open fibre through weft yarn again as card clothing, dredge cotton, lamination, tailor's cushion, pad pasting, the shortcoming of the loaded down with trivial details inconvenience of hot pressing, and directly with two-way stretched PTFE film card clothing (as Fig. 3, shown in 4) open fibre (as shown in Figure 5) and become flocculence thing 20, one deck flocculence thing again, the two-way stretched PTFE film of one deck is through dredging cotton (as shown in Figure 6), lamination, but and multiple-level stack 21, through tailor's cushion 22 (as Fig. 7, shown in 8), pad pasting Teflon film and hot pressing are long-pending closes 23, become it to filter nonwoven fabric finished product 24 (as Figure 10, shown in 11), its processing procedure quite letter is economized fast.
As shown in figure 15, flow chart for another embodiment of the present invention, the present invention is directly with film (or two-way stretched PTFE film) multilayer build-up 40 (as shown in figure 16), again with the film (or two-way stretched PTFE film) of multilayer via tailor's cushion 41 (shown in Fig. 7,8), pad pasting Teflon film and hot pressing are long-pending again closes 42, becomes it to filter 43 (as shown in figure 10) of nonwoven fabric finished product.Above-mentioned its film (or two-way stretched PTFE film) also can split the method processed of going ahead of the rest via film.
The long-pending merging of this hot pressing can use that the bonding, high wave of ultrasonic wave is bonding, stick is bonding.
The principle of above-mentioned its tailor's cushion: the needle plate that has pricker (as shown in Figure 8) for needle rolling machine (as shown in Figure 7) is driven by a cam link mechanism and pumps, making the cross section is to have the pricker that colludes on triangle (or other shape) and the seamed edge, fiber web is carried out repeated localised puncture, because the fibre web of feeding needle rolling machine (being generally the superimposed fibre web of making of machinery) is very bulk, do not entwine between fiber and the fiber, cohesive force to each other is very poor, and fiber does not almost have brute force.But when being needled into knitmesh for thousands of up to ten thousand pieces, the thorn that colludes on the pricker produces displacement with regard to crossing fibre web with some fibres on fibre web surface with needle-penetration, fibre web is stressed to be compressed owing to friction makes simultaneously, after thrusting certain depth, the thorn needle pickup, this moment is owing to collude thorn cause forward, these fibers break away from and collude thorn and rest on and hammer in the fibre web just as many fibre bundles in the knitmesh to advance vertical configuration, the fibre web that has compressed can not restored to the original state again, fiber and fiber mutually tightly winding and produce big cohesive force, and the density of fibre web greatly improved, formed one not only solid but also have a non-woven material of certain brute force.
Ultrasonic wave is bonding: as shown in Figure 9, the principle that ultrasonic wave is bonding, be to utilize high-frequency converter 30, low-frequency current is converted to high frequency electric, by electrical effect energy converter 31 high-frequency electrical energy is converted to high frequency mechanical energy then, through amplitude expander 32 with impact 33, be sent on the fibre web, convert heat energy again to, make fiber bonding.
The structure of ultrasonic wave bonder comprises following five parts:
1. high-frequency converter: the current conversion of 50 or 60 HZ is become the 20KHZ high frequency electric.
2. energy converter: the applying piezoelectric effect, make the electric energy of 20KHZ convert the high frequency mechanical energy of 20KHZ to, amplitude is 0.02MM.
3. amplitude expander: the amplitude of mechanical oscillation is amplified to about 0.1MM.
4. impact head: mechanical energy is sent on the fibre web.
5. machine drill: accept fibre web and the impulsive force of the head that is hit.
The advantage of ultrasonic wave adhering technique:
1. output is high and without suture, the phenomenon that the intensity of dregs of rice joint close is high and the no linear slit in washing back shrinks, and often lining and flocculus breakage, and hot melt adhesive point is still intact.
2. do not have heating on the machine partly, even when high-speed cruising, steel rider and supersonic generator are also hot, because bonded material directly absorbs energy from supersonic generator.
3. compare with the hot calendering bonding machine, produce same width, the Nonwovens of same bounding point pattern, ultrasonic wave bonder reach the above high speed of 50M/MIN, and energy consumption rate hot calendering bonding is saved more than 1/3.
Film splits the method Nonwovens: as shown in figure 17, film splits method and is mainly used in plastic sheeting production, the method is with after the extruded polymer film forming, by cotton ginning, crack, pin splits etc., sometimes and carry out biaxial tension, form fibrous thin net, can form Nonwovens through hot melt or with other Nonwovens lamination.
In sum, the present invention has its splendid progressive practicality in fact in like product.
The foregoing description only in order to illustrate the present invention, not from the scope of spirit of the present invention, is had the knack of various distortion, modification and application that this skill person does with it, all should be included in category of the present invention.
Claims (6)
1. the two-way stretched PTFE film of Teflon filters the nonwoven fabric manufacture method, and its manufacture method is as follows:
A. two-way stretched PTFE film card clothing is opened fine one-tenth flocculence thing;
B. one deck flocculence thing adds the two-way stretched PTFE film of one deck and is dredged cotton, lamination;
C. via tailor's cushion;
D. pad pasting Teflon film;
Via above-mentioned process, make and filter the nonwoven fabric finished product.
2. the two-way stretched PTFE film of Teflon according to claim 1 filters the nonwoven fabric manufacture method, and it is characterized in that: this one deck flocculence thing adds the combination of the two-way stretched PTFE film of one deck, but multiple-level stack.
3. the two-way stretched PTFE film of Teflon according to claim 1 filters the nonwoven fabric manufacture method, it is characterized in that: described pad pasting Teflon film can adopt that hot pressing is long-pendingly closed, ultrasonic wave, high wave or stick Method for bonding.
4. the two-way stretched PTFE film of Teflon filters the nonwoven fabric manufacture method, and its manufacture method is as follows:
A. film or two-way stretched PTFE film multilayer build-up;
B. via tailor's cushion;
C. pad pasting Teflon film;
Via above-mentioned process, make and filter the nonwoven fabric finished product.
5. the two-way stretched PTFE film of Teflon according to claim 4 filters the nonwoven fabric manufacture method, it is characterized in that: described pad pasting Teflon film can adopt that hot pressing is long-pendingly closed, ultrasonic wave, high wave or stick Method for bonding.
6. the two-way stretched PTFE film of Teflon according to claim 4 filters the nonwoven fabric manufacture method, it is characterized in that: this film or two-way stretched PTFE film can be via the film method for making processed of going ahead of the rest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100527976A CN100355979C (en) | 2004-07-14 | 2004-07-14 | Manufacturing method of filtering nonwoven fabric using Teflon two-way stretchable film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100527976A CN100355979C (en) | 2004-07-14 | 2004-07-14 | Manufacturing method of filtering nonwoven fabric using Teflon two-way stretchable film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1721618A true CN1721618A (en) | 2006-01-18 |
| CN100355979C CN100355979C (en) | 2007-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100527976A Expired - Fee Related CN100355979C (en) | 2004-07-14 | 2004-07-14 | Manufacturing method of filtering nonwoven fabric using Teflon two-way stretchable film |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI397620B (en) * | 2010-06-30 | 2013-06-01 | Method for Making Tensile Teflon (ePTFE) Line | |
| CN106757791A (en) * | 2016-12-30 | 2017-05-31 | 青岛大学 | Non-woven fabric and its preparation technology based on polytetrafluoroethylene film |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06311A (en) * | 1992-06-22 | 1994-01-11 | Japan Gore Tex Inc | Filtering material |
-
2004
- 2004-07-14 CN CNB2004100527976A patent/CN100355979C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI397620B (en) * | 2010-06-30 | 2013-06-01 | Method for Making Tensile Teflon (ePTFE) Line | |
| CN106757791A (en) * | 2016-12-30 | 2017-05-31 | 青岛大学 | Non-woven fabric and its preparation technology based on polytetrafluoroethylene film |
| CN106757791B (en) * | 2016-12-30 | 2021-09-03 | 青岛大学 | Novel non-woven fabric based on polytetrafluoroethylene film and preparation process thereof |
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| Publication number | Publication date |
|---|---|
| CN100355979C (en) | 2007-12-19 |
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Granted publication date: 20071219 |