CN207310752U - A kind of device and sealing article of the expanded PTFE seal stock quickly manufactured - Google Patents
A kind of device and sealing article of the expanded PTFE seal stock quickly manufactured Download PDFInfo
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- CN207310752U CN207310752U CN201721051388.3U CN201721051388U CN207310752U CN 207310752 U CN207310752 U CN 207310752U CN 201721051388 U CN201721051388 U CN 201721051388U CN 207310752 U CN207310752 U CN 207310752U
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- expanded ptfe
- film
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- film roll
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- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 67
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 67
- 238000007789 sealing Methods 0.000 title claims abstract description 42
- 238000003475 lamination Methods 0.000 claims abstract description 27
- 238000005520 cutting process Methods 0.000 claims abstract description 20
- 239000011248 coating agent Substances 0.000 claims abstract description 19
- 238000000576 coating method Methods 0.000 claims abstract description 19
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 9
- 230000009467 reduction Effects 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 6
- 230000002209 hydrophobic effect Effects 0.000 claims description 5
- 230000000284 resting effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 11
- 230000032683 aging Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000010408 film Substances 0.000 abstract 3
- 239000010409 thin film Substances 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 230000036316 preload Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000003814 drug Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000003566 sealing material Substances 0.000 description 4
- 206010046996 Varicose vein Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- 239000001307 helium Substances 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229920006266 Vinyl film Polymers 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000003658 microfiber Substances 0.000 description 1
- 239000002365 multiple layer Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- 229920005989 resin Polymers 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The utility model discloses a kind of method, apparatus and sealing article of the expanded PTFE seal stock quickly manufactured, method includes, and by eptfe film, continuous volume is bundled into multilayer volume coating cylinder under tensile state；Cutting multilayer volume coating cylinder complanation shape film roll bag lamination vertically；The carbochain of the periphery for the plane film roll bag lamination that tensioning, fixed cutting are formed, progress thermal finalization, thermal finalization while polytetrafluoroethylene (PTFE) micel connects under molecular force effect；The thickness of Compressed Thin film roll bag lamination.By the above-mentioned means, having the tensile strength of bigger with sheet material prepared by the method and apparatus of the utility model, the bolt presses power of bigger can be kept in use, so as to provide relatively reliable sealing performance；Seal stock improves sealing reliability, and resistance to environmental aging, extends usage time, and reduces the maintenance cost for locking and replacing gasket again；Seal stock uniformity higher, problem is less, and production efficiency improves 10 times.
Description
Technical field
Sealing article field is the utility model is related to, is sealed more particularly to a kind of expanded PTFE quickly manufactured
The device and sealing article of sheet material.
Background technology
Leakage is the principal mode of pipe flange failure, it is with sealing structure pattern, the rigidity of connected piece, the property of seal
The many factors such as energy, operation and installation are related.Gasket is the main seal of flanged joint, thus correct selection gasket is also to protect
The key that card flanged joint does not leak.Flange gasket is according to corrosivity, temperature, pressure and the flange seal of pipeline institute pumped (conveying) medium
The form in face selects species very much.Common sealing material has rubber asbestos gasket, rubber pad, spiral wound gasket, aramid fiber gasket, stone
Cotton pad, soft graphite, polytetrafluoroethylene (PTFE) etc. are only used for the engineering pipeline sealing of low and middle-end.E-PTFE is used in sealing material
The novel seal pad of vinyl film manufacture has extensive purposes, and W. L. Gore ＆ Associates, Inc. is for a long time food medicine, aerospace and nuclear power
Stand, the high-end industry such as naval vessel provides all kinds of sealings such as novel seal pad and the packing of eptfe membrane manufacture and solves
Scheme, monopolization controls most of market share in China and other areas and price is up to 8000 yuan/square metre, therefore to this
Sealing material is necessary to implement production domesticization.
Have expanded PTFE at present using the sheet material that carvel built is done in layer, the method low production efficiency（Cause
Film thickness only has 0.01-0.05mm, and completing the sheet material of thickness up to the 1mm of a large area needs nearly 1h to tile completion）,
Gauffer interlayer often occurs under air agitation since film is very thin during tiling so that it is in uneven thickness, easily it is layered between film layer,
Compression resilience is poor after plane compresses shaping, and the seal stock quality conformance of this carvel built is poor.
Utility model content
The utility model is mainly solving the technical problems that provide a kind of expanded PTFE diaphragm seal quickly manufactured
The method, apparatus and sealing article of material, have high uniformity and accuracy, and the Density Distribution of sealing article is more uniform,
Sealing effect is more consistent, more reliable.
In order to solve the above technical problems, the technical solution that the utility model uses is：There is provided and a kind of quickly manufacture
The device of expanded PTFE seal stock, successively including let off roll, pinch rolls, roller, guillotine, quick-speed jigs, baking
Case and roller press, the film of expanded PTFE are exported through let off roll, and continuous volume wraps on roller after being tensioned by pinch rolls
To certain thickness, multilayer volume coating cylinder is formed, axially multilayer is rolled up the cutting of coating cylinder into plane to guillotine by cutting
Film roll bag lamination, with four side tensioning fixed pan shape film roll bag lamination of quick-speed jigs, then carries out thermal finalization in an oven
Destressing is stored；Plane film roll bag lamination is finally subjected to thickness reduction, is rolled on roller press to seal stock
Thickness.
In one preferred embodiment of the utility model, the rotating speed of roller is 100 ~ 500 turns/min.
In one preferred embodiment of the utility model, the temperature in baking oven is 270 DEG C -310 DEG C, the work of roller press
Temperature is 270 DEG C -310 DEG C.
In one preferred embodiment of the utility model, the destressing resting period for 1.8 it is small when -2.5 it is small when.
In one preferred embodiment of the utility model, the film of expanded PTFE or gather for the varicosity of hydrophobic oleophobic
The modified film film of tetrafluoroethene.
The utility model further relates to a kind of sealing article, and sealing article is equipped with to be prepared using any of the above-described device
Seal stock.
The beneficial effects of the utility model are：The seal stock of the utility model has the tensile strength of bigger, Ke Yi
The bolt presses power of bigger is kept in use, so that relatively reliable sealing performance is provided, especially in thermal cycle and higher temperatures
Under conditions of degree；Seal stock improve sealing reliability, resistance to environmental aging, extend usage time, and reduce again locking and more
Change the maintenance cost of gasket；Seal stock uniformity higher, problem is less, and production efficiency improves 10 times；The valency of seal stock
Lattice are the 60% ~ 70% of import, can further reduce the manufacture cost of customer engineering and equipment so that consumer product is more competing
Strive power.
Brief description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the utility model
Example is applied, for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Other attached drawings are obtained, wherein：
Fig. 1 is the preferred embodiment of expanded PTFE seal stock that the utility model quickly manufactures on roller
Structure diagram；
Fig. 2 is the preferably implementation after the expanded PTFE seal stock axial direction cutting that the utility model quickly manufactures
The structure diagram of example；
Fig. 3 is a preferred embodiment of the device for the expanded PTFE seal stock that the utility model quickly manufactures
Structure diagram；
The mark of each component is as follows in attached drawing：1st, multilayer volume coating cylinder, 2, plane film roll bag lamination, 3, let off roll,
4th, pinch rolls, 5, roller, 6, guillotine, 7, quick-speed jigs, 8, baking oven, 9, roller press.
Embodiment
Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the part of the embodiment of the utility model, instead of all the embodiments.Based on the implementation in the utility model
Example, all other embodiment that those of ordinary skill in the art are obtained without making creative work, belongs to
The scope of the utility model protection.
Before the seal stock of the utility model is prepared, eptfe film, e-PTFE are first prepared
The core technology of the manufacture of vinyl film is：First polytetrafluoroethyldispersion dispersion resin is mixed with liquid extrusion aid and coloring agent,
Insulation maturation is carried out in the environment of 30-40 DEG C, then is pressed into cylinder blank, cylinder blank is laminated by rolling process,
It is heated to slough extrusion aid, then simple tension, biaxial tension are carried out, then thermal finalization, cooling, winding, are finally made varicosity and gather
Tetrafluoroethene film.
Eptfe film is a kind of macromolecule new material film with specific function high added value, is special
Made of technique biaxial tension, the microfibre of the film constitutes the multifilament layer abnormity in 0.1 μm of inside and outside penetrating -18 μm of aperture
Micropore；The film of expanded PTFE has been compounded to form the sealing material of various thickness through multiple-layer stacked.
Eptfe film has natural chemical inertness, water proofing property, heat endurance and higher mechanical strength,
These characteristics cause seal solution it is reliably ageing-resistant, sealing medium is not contaminated, in addition exposed to eroding chemical,
Also can effectively it be sealed when in friction, high temperature or extremely low temperature.
It is made of 100% expanded PTFE, which can create the e-PTFE with high dilation
Ethene sealing article.The excellent expansion of sealing article or compression rebound realize the tensile strength and sealing stability of brilliance, tall and erect
Creep resistant more and resistance to cold flow energy, so as to realize excellent performance in harsh application.
Embodiment 1：
A kind of method of the expanded PTFE seal stock quickly manufactured, comprises the following steps：
1）By eptfe film, continuous volume is bundled into multilayer volume coating cylinder 1 under tensile state, as shown in Figure 1；
2）1 complanation shape film roll bag lamination 2 of cutting multilayer volume coating cylinder vertically, as shown in Figure 2；
3）The periphery for the plane film roll bag lamination 2 that tensioning, fixed cutting are formed, in the environment of temperature is 270 DEG C
When destressing storage 1.8 is small, the carbochain of thermal finalization while polytetrafluoroethylene (PTFE) micel connects under molecular force effect；
4）By thickness reduction 8% in the environment that temperature is 270 DEG C, that is, complete the preparation of seal stock.
Carbochain through the polytetrafluoroethylene (PTFE) micel in high hot rolling caudacoria can molecular force effect under connect it is more,
So that the combination of film roll bag lamination is closer, formation is integral and not stratified, and this volume bag method production efficiency improves 10 times,
The uniformity of product is more preferable.
100% expanded PTFE seal stock of various thickness series can be produced with the method, meets food
The special seal requirement of the high-end engineering such as medicine, aerospace and nuclear power station, naval vessel.
The film of expanded PTFE or for hydrophobic oleophobic expanded PTFE modified film film.
The thickness of the seal stock is 0.8-3.5mm.Sprung back on seal stock in the thickness range of 1-3mm
The experiment of rate and leakage rate：Under preload pressure 17.25MPa loads, sheet material compression ratio removes rebound degree after load up to 45 ± 5%
>10%；Tested using 99.9% helium of medium, preload pressure 17.25MPa, 4 MPa of test pressure load under, leakage
Rate<1×10-3cm3/s。
A kind of device of the expanded PTFE seal stock quickly manufactured, as shown in figure 3, successively include let off roll 3,
Pinch rolls 4, roller 5, guillotine 6, quick-speed jigs 7, baking oven 8 and roller press 9, the film of expanded PTFE is through unreeling
Roller 3 exports, and continuous volume bag to certain thickness, forms multilayer volume coating cylinder 1, roller 5 on roller 5 after being tensioned by pinch rolls 4
Rotating speed be 100 turns/min, axially cutting folds 1 cutting of multilayer volume coating cylinder into plane film roll bag to guillotine 6
Layer 2, with 7 four side tensioning fixed pan shape film roll bag lamination 2 of quick-speed jigs, then carries out thermal finalization destressing in baking oven 8
Store, the temperature in baking oven 8 is 270 DEG C, when the destressing resting period is 1.8 small；Finally by plane film roll bag lamination 2 into
Row thickness reduction, to the thickness of seal stock, the operating temperature of roller press 9 is 270 DEG C for rolling on roller press 9.
Embodiment 2:
A kind of method of the expanded PTFE seal stock quickly manufactured, comprises the following steps：
1）By eptfe film, continuous volume is bundled into multilayer volume coating cylinder under tensile state；
2）Cutting multilayer volume coating cylinder complanation shape film roll bag lamination 2 vertically；
3）The periphery for the plane film roll bag lamination 2 that tensioning, fixed cutting are formed, in the environment of temperature is 290 DEG C
When destressing storage 2 is small, the carbochain of thermal finalization while polytetrafluoroethylene (PTFE) micel connects under molecular force effect；
4）By thickness reduction 12% in the environment that temperature is 300 DEG C, that is, complete the preparation of seal stock.
Carbochain through the polytetrafluoroethylene (PTFE) micel in high hot rolling caudacoria can molecular force effect under connect it is more,
So that the combination of film roll bag lamination is closer, formation is integral and not stratified, and this volume bag method production efficiency improves 10 times,
The uniformity of product is more preferable.
100% expanded PTFE seal stock of various thickness series can be produced with the method, meets food
The special seal requirement of the high-end engineering such as medicine, aerospace and nuclear power station, naval vessel.
The film of expanded PTFE or for hydrophobic oleophobic expanded PTFE modified film film.
The thickness of the seal stock is 0.8-3.5mm.Sprung back on seal stock in the thickness range of 1-3mm
The experiment of rate and leakage rate：Under preload pressure 17.25MPa loads, sheet material compression ratio removes rebound degree after load up to 45 ± 5%
>10%；Tested using 99.9% helium of medium, preload pressure 17.25MPa, 4 MPa of test pressure load under, leakage
Rate<1×10-3cm3/s。
A kind of device of the expanded PTFE seal stock quickly manufactured, successively including let off roll 3, pinch rolls 4, rolling
Cylinder 5, guillotine 6, quick-speed jigs 7, baking oven 8 and roller press 9, the film of expanded PTFE are exported through let off roll 3, by
Pinch rolls 4 be tensioned after on roller continuous volume bag to certain thickness, form multilayer volume coating cylinder, the rotating speed of roller for 300 turns/
Min, axially multilayer is rolled up the cutting of coating cylinder into plane film roll bag lamination 2 to guillotine 6 by cutting, with quick-speed jigs 7
Four side tensioning fixed pan shape film roll bag laminations 2, then carry out thermal finalization destressing storage in baking oven 8, the temperature in baking oven 8
Spend for 290 DEG C, when the destressing resting period is 2 small；Plane film roll bag lamination 2 is finally subjected to thickness reduction, in roller
To the thickness of seal stock, the operating temperature of roller press 9 is 300 DEG C for rolling on press 9.
Embodiment 3：
A kind of method of the expanded PTFE seal stock quickly manufactured, comprises the following steps：
1）By eptfe film, continuous volume is bundled into multilayer volume coating cylinder under tensile state；
2）Cutting multilayer volume coating cylinder complanation shape film roll bag lamination 2 vertically；
3）The periphery for the plane film roll bag lamination 2 that tensioning, fixed cutting are formed, in the environment of temperature is 310 DEG C
When destressing storage 2.5 is small, the carbochain of thermal finalization while polytetrafluoroethylene (PTFE) micel connects under molecular force effect；
4）By thickness reduction 16% in the environment that temperature is 310 DEG C, that is, complete the preparation of seal stock.
Carbochain through the polytetrafluoroethylene (PTFE) micel in high hot rolling caudacoria can molecular force effect under connect it is more,
So that the combination of film roll bag lamination is closer, formation is integral and not stratified, and this volume bag method production efficiency improves 10 times,
The uniformity of product is more preferable.
100% expanded PTFE seal stock of various thickness series can be produced with the method, meets food
The special seal requirement of the high-end engineering such as medicine, aerospace and nuclear power station, naval vessel.
The film of expanded PTFE or for hydrophobic oleophobic expanded PTFE modified film film.
The thickness of the seal stock is 0.8-3.5mm.Sprung back on seal stock in the thickness range of 1-3mm
The experiment of rate and leakage rate：Under preload pressure 17.25MPa loads, sheet material compression ratio removes rebound degree after load up to 45 ± 5%
>10%；Tested using 99.9% helium of medium, preload pressure 17.25MPa, 4 MPa of test pressure load under, leakage
Rate<1×10-3cm3/s。
A kind of device of the expanded PTFE seal stock quickly manufactured, successively including let off roll 3, pinch rolls 4, rolling
Cylinder 5, guillotine 6, quick-speed jigs 7, baking oven 8 and roller press 9, the film of expanded PTFE are exported through let off roll 3, by
Continuous volume bag is to certain thickness on roller 5 after pinch rolls 4 is tensioned, and formation multilayer volume coating cylinder, the rotating speed of roller is 500
Turn/min, axially multilayer is rolled up the cutting of coating cylinder into plane film roll bag lamination 2 to guillotine 6 by cutting, with quick folder
Have 7 four side tensioning fixed pan shape film roll bag laminations 2, thermal finalization destressing storage is then carried out in baking oven 8, in baking oven 8
Temperature be 310 DEG C, the destressing resting period for 2.5 it is small when；Plane film roll bag lamination 2 is finally subjected to thickness reduction,
To the thickness of seal stock, the operating temperature of roller press 9 is 310 DEG C for rolling on roller press 9.
A kind of sealing article, sealing article include the seal stock that the method and apparatus in embodiment 1-3 are prepared.It is close
The preparation method of envelope product includes：Expanded PTFE seal stock is first prepared, processes preceding preparation, then using accurate digital control
Die-cutting machine Blanking Shaping, secondly waste discharge material, inspection arrange, and finally packaging is delivered to customer.
This based article includes plate gasket, universal pipes gasket, the scene shaping novelty such as banding gasket and joint sealing member
Sealing article series of products.
It will be food medicine, aerospace and work to use the seal stock that the method and apparatus of the utility model are prepared
Industry provides all kinds of sealing solutions such as various gaskets and packing.With specific function, high added value, surface tension it is lower
High-tech product, will there is good superiority of effectiveness, will break monopolization of the offshore company to China market, cuts down its market and occupies
Amount, the product will substitute inlet and outlet, advantageously reduce the cost of China's engineering equipment and improve its performance reliability, favorably
Export competitiveness is lifted in China's engineering equipment so that engineering equipment safe and reliable operation important in inhibiting.
There is the seal stock of the utility model remarkable creep resistant and resistance to cold flow energy, the sheet material of the utility model to have
The tensile strength of bigger, therefore, deforms small compared with other gaskets, after compression（Thickness and width）.Therefore, it can used
The middle bolt presses power for keeping bigger, so as to provide relatively reliable sealing performance, especially in thermal cycle and higher temperature
Under the conditions of.
Wherein, expanded PTFE has natural chemical inertness, water proofing property, heat endurance and higher machinery by force
Degree, the sealing solution of these characteristic let us is reliability and durability, or even exposed to eroding chemical, friction, high temperature or
Also can effectively it be sealed when in extremely low temperature.The temperature range that the eptfe film sealing article can be born is -269 °C
To 315 °C（- 452 °F to 600 °F）, this causes them to can be applied to multiple fields.
Deform few after the width compression of the eptfe film sealing article, gasket can be avoided to squeeze into pipeline and right
Technique adversely affects.
This sealed product improves sealing reliability, and resistance to environmental aging, extends usage time, and reduces locking again and more
Change the maintenance cost of gasket.
The very reliable sealing performance of expanded PTFE seal stock, compressive property, which is tested, to be shown, the varicosity poly- four
Vinyl fluoride sealing article shows extremely outstanding in terms of the various extreme conditions of industrial flange sealing are born.Under the high temperature conditions
Install and in use, this gasket is capable of providing the sealing reliability safety coefficient of higher.
The expanded PTFE sealing article has chemical inertness, either in highly basic, strong acid environment, also or solvent
In, it can realize lasting sealing effect.It can be resistant to All Media（PH value range 0-14）Corrosion it is pollution-free, but melt/
Except dissolving alkali metal and simple substance fluoride.
Expanded PTFE seal stock uniformity higher, problem is less, and production efficiency improves 10 times.
Our company's manufacturing process has high uniformity and accuracy, therefore, with other expanded polytetrafluoroethylplate plate shapes
Gasket is compared, and the Density Distribution of the expanded PTFE sealing article is more uniform.This makes sealing effect more consistent, more may be used
Lean on.
Different from hard tetrafluoro or intefused tetratiuorine, it is uneven which can comply with common flange
Whole degree.This gasket can avoid rebuilding flange surface, expand the scope of application, and realize extremely reliable sealing effect, therefore
It is more easy to realize failure-free operation.
The price of expanded PTFE seal stock is the 60%-70% of import, can further reduce client's " engineering
And equipment " manufacture cost so that consumer product is more competitive.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
The equivalent structure or equivalent flow shift made using the utility model description, is directly or indirectly used in other phases
The technical field of pass, is equally included in the patent within the scope of the utility model.
Claims (6)
- A kind of 1. device of the expanded PTFE seal stock quickly manufactured, it is characterised in that successively including let off roll, Withdrawing roll, roller, guillotine, quick-speed jigs, baking oven and roller press, the film of expanded PTFE are exported through let off roll, Continuous volume bag to certain thickness, forms multilayer volume coating cylinder, guillotine is axially on roller after being tensioned by pinch rolls Multilayer is rolled up the cutting of coating cylinder into plane film roll bag lamination by cutting, with four side tensioning fixed pan shape film roll of quick-speed jigs Bag lamination, then carries out thermal finalization destressing storage in an oven；Plane film roll bag lamination is finally subjected to thickness reduction, Rolled on roller press to the thickness of seal stock.
- 2. the device of the expanded PTFE seal stock according to claim 1 quickly manufactured, it is characterised in that rolling The rotating speed of cylinder turns/min for 100-500.
- 3. the device of the expanded PTFE seal stock according to claim 1 quickly manufactured, it is characterised in that dry Temperature in case is 270 DEG C -310 DEG C, and the operating temperature of roller press is 270 DEG C -310 DEG C.
- 4. the device of the expanded PTFE seal stock according to claim 1 quickly manufactured, it is characterised in that go The stress resting period for 1.8 it is small when -2.5 it is small when.
- 5. the device of the expanded PTFE seal stock according to claim 1 quickly manufactured, it is characterised in that swollen The film of body polytetrafluoroethylene (PTFE) or for hydrophobic oleophobic expanded PTFE modified film film.
- 6. a kind of sealing article, it is characterised in that sealing article is equipped with to be prepared using any devices of claim 1-5 Seal stock.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721051388.3U CN207310752U (en) | 2017-08-22 | 2017-08-22 | A kind of device and sealing article of the expanded PTFE seal stock quickly manufactured |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721051388.3U CN207310752U (en) | 2017-08-22 | 2017-08-22 | A kind of device and sealing article of the expanded PTFE seal stock quickly manufactured |
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| Publication Number | Publication Date |
|---|---|
| CN207310752U true CN207310752U (en) | 2018-05-04 |
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|---|---|---|---|
| CN201721051388.3U Withdrawn - After Issue CN207310752U (en) | 2017-08-22 | 2017-08-22 | A kind of device and sealing article of the expanded PTFE seal stock quickly manufactured |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107487058A (en) * | 2017-08-22 | 2017-12-19 | 江苏泛亚微透科技股份有限公司 | A kind of method, apparatus and sealing article of the expanded PTFE seal stock quickly manufactured |
-
2017
- 2017-08-22 CN CN201721051388.3U patent/CN207310752U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107487058A (en) * | 2017-08-22 | 2017-12-19 | 江苏泛亚微透科技股份有限公司 | A kind of method, apparatus and sealing article of the expanded PTFE seal stock quickly manufactured |
| CN107487058B (en) * | 2017-08-22 | 2023-11-14 | 江苏泛亚微透科技股份有限公司 | Method and device for rapidly manufacturing expanded polytetrafluoroethylene sealing sheet and sealing product |
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Address after: 213000 No.8 Qiancao Road, Lijia Town, Wujin District, Changzhou City, Jiangsu Province Patentee after: PANASIAN MICROVENT TECH (JIANGSU) Corp. Address before: 213000, No. 28-8, Sakamoto Road, Sakamoto village, Lijia Town, Wujin District, Jiangsu, Changzhou Patentee before: PANASIAN MICROVENT TECH (JIANGSU) Corp. |
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Granted publication date: 20180504 Effective date of abandoning: 20231114 |
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Granted publication date: 20180504 Effective date of abandoning: 20231114 |