CN109130259A - A kind of polytetrafluoroethylene film forming method - Google Patents
A kind of polytetrafluoroethylene film forming method Download PDFInfo
- Publication number
- CN109130259A CN109130259A CN201811246622.7A CN201811246622A CN109130259A CN 109130259 A CN109130259 A CN 109130259A CN 201811246622 A CN201811246622 A CN 201811246622A CN 109130259 A CN109130259 A CN 109130259A
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- China
- Prior art keywords
- film
- roll
- calender
- blank
- polytetrafluoroethylene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
Abstract
The invention discloses a kind of polytetrafluoroethylene film forming methods, including high-intensitive fine polytetrafluoroethylpowder powder and water-soluble and non-fading high temperature resistant solid super fine are smashed to pieces by high-speed mixer, mixed, is stirred, then it is sieved through vibrating screen, obtains standby raw material；Standby raw material is placed in full-automatic tetrafluoro sintering furnace；Resulting blank placement is preheated in an oven, carries out turning or rotary-cut, winding to blank by the thickness of setting film using carbide cutter tool；Tetrafluoroethene film roll is mounted on discharge mechanism, and after passing through between calender topping roll, bottom roll, calender topping roll and bottom roll are preheated to set temperature, is opened calender and is rolled tetrafluoroethene film；Film obtained, which is fitted into after purpose-built washing equipment first impregnates in heated Rinsing Area, enters back into the cleaning of room temperature sink, by 0.5 meter to 1 meter of speed per minute by obtaining polytetrafluoroethylene film after unreeling, impregnate, clean, dry, winding.
Description
Technical field
The present invention relates to polytetrafluoroethylene (PTFE) processing technique fields, and in particular to a kind of polytetrafluoroethylene film forming method.
Background technique
Polytetrafluoroethylene (PTFE) is claimed " King ", and having excellent chemical stability, antiacid alkali resistant, corrosion resistance is to work as this life
One of corrosion resistance optimal material in boundary, meanwhile, polytetrafluoroethylene (PTFE) has the characteristics that resistant to high temperature, its coefficient of friction is extremely low,
So leading to the problem of for it solves many of the fields such as chemical industry, petroleum, pharmacy after can making lubricating action.
The main path of polytetrafluoroethylene film is by the way that polyflon precompressed forms a film, again through double after sinter molding
To the microporous barrier for being formed and having crack pore structure is stretched, the film very thin cannot be independently operated, needs to pass through overlay film with other substrates
It is compound obtained that device carries out high temperature hot pressing.The preparation investment cost of the film is more, production site area is larger, complex process, energy
The factors such as consumption is big, and the film there are air penetrabilities it is low, membrane damage is serious, service life is short the disadvantages of, seriously constrain its reality
Application range.
Summary of the invention
The present invention is intended to provide a kind of polytetrafluoroethylene film forming method.
The invention provides the following technical scheme:
A kind of polytetrafluoroethylene film forming method, includes the following steps:
(1) high-intensitive fine polytetrafluoroethylpowder powder and water-soluble and non-fading high temperature resistant solid super fine are passed through
High-speed mixer is smashed to pieces, is mixed, is stirred, and is then sieved through vibrating screen, and standby raw material is obtained；
(2) standby raw material is placed in full-automatic tetrafluoro sintering furnace, by journeys such as the heating of setting, constant temperature, cooling, coolings
Sequence is sintered；
(3) the resulting blank placement of step (2) is preheated in an oven, it, will be outer after keeping the inside and outside temperature of blank consistent
Table has the special core rod of stepped tooth to be pressed into or pull in the centre bore of blank, is lifted on high-precision numerically controlled lathe with hoisting machinery
Or on peeler, turning or rotary-cut, winding are carried out to blank by the thickness of setting film using carbide cutter tool；
(4) above-mentioned tetrafluoroethene film roll is mounted on discharge mechanism, by being passed through between calender topping roll, bottom roll
Afterwards, calender topping roll and bottom roll are preheated to set temperature, adjustment topping roll and bottom roll gap, open calender calendering four
Fluoroethylene film；
(5) film made from step (4) is fitted into after purpose-built washing equipment first impregnates in heated Rinsing Area and is entered back into often
Warm water tank cleaning, by 0.5 meter to 1 meter of speed per minute by obtaining polytetrafluoroethylene (PTFE) after unreeling, impregnate, clean, dry, winding
Film.
The speed control of calender calendering tetrafluoroethene film is 5~8m/min in the step (4).
Bottom roll set temperature is 58 DEG C in the step (4), and topping roll set temperature is 55 DEG C.
Heating clear water temperature is 90-95 DEG C in the step (5).
Compared with prior art, the beneficial effects of the present invention are: preparation method of the present invention is simple, pore size uniformly and hole
Gap rate is easy to control, and is advantageously implemented large-scale production, and polytetrafluoroethylene film has surface smooth, non-stick, wear-resisting, anti-impact
It hits, high temperature resistant, ageing-resistant, corrosion-resistant, do not absorb water, easy-to-clean ash and superior chemical stability, long service life can be widely applied
In the various filtration arts such as machinery.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
A kind of polytetrafluoroethylene film forming method of embodiment, includes the following steps:
(1) high-intensitive fine polytetrafluoroethylpowder powder and water-soluble and non-fading high temperature resistant solid super fine are passed through
High-speed mixer is smashed to pieces, is mixed, is stirred, and is then sieved through vibrating screen, and standby raw material is obtained；
(2) standby raw material is placed in full-automatic tetrafluoro sintering furnace, by journeys such as the heating of setting, constant temperature, cooling, coolings
Sequence is sintered；
(3) the resulting blank placement of step (2) is preheated in an oven, it, will be outer after keeping the inside and outside temperature of blank consistent
Table has the special core rod of stepped tooth to be pressed into or pull in the centre bore of blank, is lifted on high-precision numerically controlled lathe with hoisting machinery
Or on peeler, turning or rotary-cut, winding are carried out to blank by the thickness of setting film using carbide cutter tool；
(4) above-mentioned tetrafluoroethene film roll is mounted on discharge mechanism, by being passed through between calender topping roll, bottom roll
Afterwards, calender topping roll and bottom roll are preheated to set temperature, adjustment topping roll and bottom roll gap, open calender calendering four
Fluoroethylene film；
(5) film made from step (4) is fitted into after purpose-built washing equipment first impregnates in heated Rinsing Area and is entered back into often
Warm water tank cleaning, by 0.5 meter to 1 meter of speed per minute by obtaining polytetrafluoroethylene (PTFE) after unreeling, impregnate, clean, dry, winding
Film.
The speed control of calender calendering tetrafluoroethene film is 5~8m/min in the step (4).
Bottom roll set temperature is 58 DEG C in the step (4), and topping roll set temperature is 55 DEG C.
Heating clear water temperature is 90-95 DEG C in the step (5).
Preparation method of the present invention is simple, pore size is uniform and porosity is easy to control, and is advantageously implemented large-scale production,
Polytetrafluoroethylene film has surface smooth, non-stick, and wear-resisting, shock resistance is high temperature resistant, ageing-resistant, corrosion-resistant, do not absorb water, Yi Qing
Grey and superior chemical stability, long service life can be widely applied to the various filtration arts such as machinery.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the exemplary embodiment, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit require rather than it is described illustrate to limit, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.In addition, it should be understood that although this specification is described in terms of embodiments, but it is not each
Embodiment only contains an independent technical solution, and this description of the specification is merely for the sake of clarity, this field
Technical staff should consider the specification as a whole, and the technical solutions in the various embodiments may also be suitably combined, form this
The other embodiments that field technical staff is understood that.
Claims (4)
1. a kind of polytetrafluoroethylene film forming method, which comprises the steps of:
(1) high-intensitive fine polytetrafluoroethylpowder powder and water-soluble and non-fading high temperature resistant solid super fine are passed through into high speed
Mixing machine is smashed to pieces, is mixed, is stirred, and is then sieved through vibrating screen, and standby raw material is obtained；
(2) standby raw material is placed in full-automatic tetrafluoro sintering furnace, by the programs such as the heating of setting, constant temperature, cooling, cooling into
Row sintering；
(3) the resulting blank placement of step (2) is preheated in an oven, after keeping the inside and outside temperature of blank consistent, appearance is had
The special core rod of stepped tooth is pressed into or pulls in the centre bore of blank, is lifted on high-precision numerically controlled lathe or rotation with hoisting machinery
It cuts on machine, turning or rotary-cut, winding is carried out to blank by the thickness of setting film using carbide cutter tool；
(4) above-mentioned tetrafluoroethene film roll is mounted on discharge mechanism, after being passed through between calender topping roll, bottom roll,
Calender topping roll and bottom roll are preheated to set temperature, adjustment topping roll and bottom roll gap, open calender and roll tetrafluoro
Vinyl film；
(5) film made from step (4) is fitted into after purpose-built washing equipment first impregnates in heated Rinsing Area and enters back into normal-temperature water
Slot cleaning, it is thin by obtaining polytetrafluoroethylene (PTFE) after unreeling, impregnate, clean, dry, winding by 0.5 meter to 1 meter of speed per minute
Film.
2. a kind of polytetrafluoroethylene film forming method according to claim 1, it is characterised in that: in the step (4)
The speed control that calender rolls tetrafluoroethene film is 5~8m/min.
3. a kind of polytetrafluoroethylene film forming method according to claim 1, it is characterised in that: in the step (4)
Bottom roll set temperature is 58 DEG C, and topping roll set temperature is 55 DEG C.
4. a kind of polytetrafluoroethylene film forming method according to claim 1, it is characterised in that: in the step (5)
Heating clear water temperature is 90-95 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811246622.7A CN109130259A (en) | 2018-10-25 | 2018-10-25 | A kind of polytetrafluoroethylene film forming method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811246622.7A CN109130259A (en) | 2018-10-25 | 2018-10-25 | A kind of polytetrafluoroethylene film forming method |
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| Publication Number | Publication Date |
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| CN109130259A true CN109130259A (en) | 2019-01-04 |
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| CN201811246622.7A Pending CN109130259A (en) | 2018-10-25 | 2018-10-25 | A kind of polytetrafluoroethylene film forming method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111016231A (en) * | 2019-12-20 | 2020-04-17 | 江苏泰氟隆科技有限公司 | PTFE ceramic film for 5G network high-performance copper-clad plate and processing method thereof |
| WO2020215640A1 (en) * | 2019-04-26 | 2020-10-29 | 江苏泛亚微透科技股份有限公司 | Air-impermeable burst diaphragm, fabrication method, and explosion suppression valve for power battery |
| CN114703611A (en) * | 2022-03-01 | 2022-07-05 | 苏州东轩塑料制品有限公司 | Preparation method of polytetrafluoroethylene insulation coating |
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| CN101491945A (en) * | 2009-02-19 | 2009-07-29 | 广州市东泓橡塑制品有限公司 | Preparation method of teflon oriented film of ultra-thin breadth |
| CN103144324A (en) * | 2013-03-18 | 2013-06-12 | 江苏泰氟隆科技有限公司 | Ultrathin wide teflon turning film and manufacturing technology thereof |
| CN105169966A (en) * | 2015-07-14 | 2015-12-23 | 江苏泰氟隆科技有限公司 | Polytetrafluoroethylene three-dimensional microporous membrane and preparation method thereof |
| CN105751539A (en) * | 2016-03-29 | 2016-07-13 | 苏颖颖 | Preparation method of waterproof polytetrafluoroethylene thin film |
| CN107599461A (en) * | 2017-08-04 | 2018-01-19 | 镇江春环密封件集团有限公司 | A kind of polytetrafluoroethylene film forming method |
-
2018
- 2018-10-25 CN CN201811246622.7A patent/CN109130259A/en active Pending
Patent Citations (5)
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| CN101491945A (en) * | 2009-02-19 | 2009-07-29 | 广州市东泓橡塑制品有限公司 | Preparation method of teflon oriented film of ultra-thin breadth |
| CN103144324A (en) * | 2013-03-18 | 2013-06-12 | 江苏泰氟隆科技有限公司 | Ultrathin wide teflon turning film and manufacturing technology thereof |
| CN105169966A (en) * | 2015-07-14 | 2015-12-23 | 江苏泰氟隆科技有限公司 | Polytetrafluoroethylene three-dimensional microporous membrane and preparation method thereof |
| CN105751539A (en) * | 2016-03-29 | 2016-07-13 | 苏颖颖 | Preparation method of waterproof polytetrafluoroethylene thin film |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020215640A1 (en) * | 2019-04-26 | 2020-10-29 | 江苏泛亚微透科技股份有限公司 | Air-impermeable burst diaphragm, fabrication method, and explosion suppression valve for power battery |
| CN111016231A (en) * | 2019-12-20 | 2020-04-17 | 江苏泰氟隆科技有限公司 | PTFE ceramic film for 5G network high-performance copper-clad plate and processing method thereof |
| CN114703611A (en) * | 2022-03-01 | 2022-07-05 | 苏州东轩塑料制品有限公司 | Preparation method of polytetrafluoroethylene insulation coating |
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Application publication date: 20190104 |
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