CN1140651A - Method for coating teflon film on silicon rubber pressure roller - Google Patents
Method for coating teflon film on silicon rubber pressure roller Download PDFInfo
- Publication number
- CN1140651A CN1140651A CN 95108370 CN95108370A CN1140651A CN 1140651 A CN1140651 A CN 1140651A CN 95108370 CN95108370 CN 95108370 CN 95108370 A CN95108370 A CN 95108370A CN 1140651 A CN1140651 A CN 1140651A
- Authority
- CN
- China
- Prior art keywords
- pressure roll
- silicon rubber
- shaping mould
- manufacture method
- teflon film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 30
- 239000004809 Teflon Substances 0.000 title claims abstract description 18
- 229920006362 Teflon® Polymers 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 21
- 239000011248 coating agent Substances 0.000 title description 3
- 238000000576 coating method Methods 0.000 title description 3
- 239000004945 silicone rubber Substances 0.000 claims abstract description 9
- 238000007493 shaping process Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 3
- 229920000260 silastic Polymers 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 2
- 238000007334 copolymerization reaction Methods 0.000 claims description 2
- URXNVXOMQQCBHS-UHFFFAOYSA-N naphthalene;sodium Chemical compound [Na].C1=CC=CC2=CC=CC=C21 URXNVXOMQQCBHS-UHFFFAOYSA-N 0.000 claims description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims 2
- 230000005855 radiation Effects 0.000 claims 1
- 238000013040 rubber vulcanization Methods 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 229920001971 elastomer Polymers 0.000 abstract description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 14
- 229910052731 fluorine Inorganic materials 0.000 description 14
- 239000011737 fluorine Substances 0.000 description 14
- 239000003292 glue Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Fixing For Electrophotography (AREA)
Abstract
During the prodn of said pressure roller, teflon film casing is first placed on the inner wall of forming mould and two-component silicone rubber is then injected into the evacuated inner mould cavity. The outer diameter of film casing is 3-5% smaller than that of finished silicone rubber layer, so that the film covers the rubber roller closely. The inner surface of film casing is painted with adhesive for the close combination of film layer to silicone rubber.
Description
The present invention relates to the production method of pressure roll in the duplicator fusing system, more specifically, relate to the process of silicon rubber pressure roll surface coated with teflon (Teflon) film.
The fusing system of modern duplicator all adopts the hot pressing fixation method, and fixing roller and pressure roll are its strength members, and its duty is seen Fig. 1.Last fixing roller 1 is the hollow metal roller, the middle photographic fixing lamp 5 of placing, when work, the fixing roller surface temperature is remained on about 180 ℃, scribble special fluorine human relations (Teflon) coating on this surface, to prevent that the toner 4 on the copy paper 3 from adhering to fixing roller 1 surface in fixing, influence paper cleaning and clear.Following pressure roll 2 is the copy paper pressurizeds that make between the up-down rollers.So that on the paper after the toner thermoplastic photographic fixing more firm.One deck is resistant to elevated temperatures silastic-layer around the structure upward pressure roller roller core 2.
In recent years, the duplicator copying speed is accelerated, the duplicator pressure roll is also had higher requirement, particularly many machines also have the function of double-sided copying, pressure roll will touch the duplicating paper of having finished duplicating, promptly can touch toner, therefore require the pressure roll surface to possess and do not adhere to the toner performance, pressure roll 2 silastic surfaces also should have special fluorine human relations layer in other words.The surface has the pressure roll of fluorine-coating layer that autotype is cleaned more, has also increased the service life of self, and advantage is fairly obvious.
The process that applies special fluorine human relations on the metal surface of fixing roller 1 is ripe, because silicon rubber holds the temperature when can't stand special fluorine human relations material sintering, and the adhesion of these two kinds of materials is very difficult, so coated method is not suitable for pressure roll on the metal surface.
Use the heat-shrinkable teflon sleeve in some occasion, utilize its heat-shrinkable that this sleeve pipe is added and be overlying on silastic surface, but this method requirement polytetrafluoroethylene (PTFE) bed thickness must be very thick, even reach 0.8mm, not only cost is high, and causes the roller surface too hard.
The purpose of this invention is to provide a kind of new production method, can on the pressure roll silicone rubber, be coated with thin special fluorine human relations layer, make pressure roll maintain original hardness of silicon rubber, copy paper is evenly pressurizeed, guarantee the quality of copying speed and autotype.
Production method of the present invention has following steps:
1. be ready to the pressure roll shaping mould;
2. be ready to the thin cover of special fluorine human relations (hereinafter to be referred as the thin cover of fluorine) of regulation wall thickness, the cover diameter should be than the pressure roll external diameter after the moulding little (3～5) %.
3. prepare the pressure roll mandrel that car system is finished;
4. in the axis hole with an insertion shaping mould of the mandrel chassis central authorities of preparation in the step 3, the thin cover of preparing in the step 2 is enclosed within outside the described mandrel, thin cover one end is clipped between described stock mould chassis and the trim ring;
5. described shaping mould jacket casing is approached outside the cover at fluorine;
6. cover the moulding die cap, push down the other end of the thin cover of fluorine simultaneously, compress mutually between each parts of shaping mould;
7. shaping mould is covered charging aperture and be connected to silicon rubber and clamp-on on the pipe, exhaust outlet is connected on the exhaust tube;
8. clamp-on to start under the valve closing state on the pipe at silicon rubber and be connected on vavuum pump on the exhaust tube through valve;
9. reach and close vacuum valve behind the specified vacuum degree and stop to vacuumize;
10. open into glue valve, start rubber press, silicone rubber compounds, particularly two-component silicone rubber raw material A, B enter the bi-component blender respectively simultaneously under pressure, mixer outlet is by the plastic squeeze pipe, enter in the shaping mould by the space that forms between thin cover of fluorine and the pressure roll mandrel up to being full of by charging aperture by this pipe, find till a small amount of glue that overflows;
11. close release of pressure behind the plastic squeeze valve, unload plastic squeeze pipe and exhaust tube from shaping mould;
12. the shaping mould assembly of injecting glue is put into insulating box silicon rubber is made vulcanizing treatment;
13. unload shaping mould, the pressure roll blank of blooming is finished.
Be later on the pressure roller finishing step,, will not narrate not in the scope of the invention.
Thus, the external diameter of silica gel roller, is closely opened it and is enclosed within on the silica gel roller outer surface so can approach cover by the stretching fluorine greater than the thin cover of fluorine (3～5) % after the moulding, and the two is integral naturally.
The fluorine film that the pressure roll of being made by above process covers outward is very level and smooth, firm, and size is accurate, and thickness can reach about 0.05mm, reaches fully neither to adhere to toner and keep original pliability of silicon rubber and flexible requirement.
Above process is easier, and equipment is simple, and processing ease is with low cost, and the pressure roll chemical stability of being produced is good, all model duplicator upward pressure rollers of the inside and outside producer of the almost used host country of suitable manufacturing.
Fig. 1 is a duplicator fusing system working state figure.
Fig. 2 is the shaping moudle structure schematic diagram that is used for the inventive method.
Fig. 3 is to use the layout of equipment of the inventive method.
Below with reference to accompanying drawing in detail specific embodiment is described in detail.
Referring to Fig. 2, this illustrates the structural representation of a mould 10.Chassis 11 is flat boss shape, boss central authorities have for the hole 15 of inserting mandrel 13 1 ends, the boss marginal dimension is suitable with the pressure roll external diameter, overcoat is clamped the Teflon film sleeve pipe with trim ring 18 for them, sleeve 12 lower ends are enclosed within outside the trim ring 18, form the space of cast silicon rubber between fluorine thin cover inner chamber and the mandrel 13.Described Teflon film sleeve pipe is made by the non-hot shortness PFA material that tetrafluoroethene and perfluoroalkyl vinyl ether copolymerization form, the inwall of the non-hot shortness Teflon of described this kind sleeve pipe is through handling, purpose is the adhesion that increases membrane material and silicon rubber, described processing method can have (1) chemical method, handles with sodium-naphthalene complex compound; (2) physics method is with the C-F bond structure of irradiation method destruction material.Teflon sleeve pipe factory has finished this and has handled formality when the supply of material.In that casing pipe sleeve its inwall before on the shaping mould also will be coated binding agent, so that further increase the adhesive force of silicon rubber and thin layer.Teflon membrane casing external diameter should be less than finished product pressure roll external diameter (3-5) %, be assembled into pattern as follows: Teflon sleeve pipe lower end is enclosed within on the 11 boss peripheries of shaping mould chassis, clamp by trim ring 18 pressures, be installed with the one end in the sleeve pipe and be inserted in pressure roll mandrel 13 in 11 medium pores 15 of chassis, sleeve 12 is enclosed within outside the sleeve pipe, when covering die cap 14 the sleeve pipe upper end is pushed down, by unshowned securing member among Fig. 3 each parts of shaping mould are compressed close air tightly, charging aperture 16 on the lid 14 and exhaust outlet 17 all communicate with the space of pouring into a mould silicon rubber.Above-mentioned gluing by agent used the bonding agent of the model of chemical company of Japanese SHIN-ETSU HANTOTAI product as X-33-156-1 or X-33-156-4.
Referring to Fig. 3, charging aperture 16 connects plastic squeeze pipe 26 on the moulding die cap 14,22 is forcing press, 23 is extrusion piston, and 24 is the silicon rubber storage tank, uses two-component silicone rubber in this example, for example, the KE-1334A/B model of Japan SHIN-ETSU HANTOTAI chemical company or the silicon rubber of KE-1330A/B model, two kinds of sizing material A, B enter bi-component blender 25 by glue inlet tube 28,29 separately, mix being output as plastic squeeze pipe 26; Exhaust outlet 17 on the moulding die cap 14 joins through exhaust tube 27 and vavuum pump 21; Corresponding valve and instrument should be arranged on the pipeline among the figure, and this is conspicuous, does not mark up.
According to the step that this specification overview section is narrated, earlier the spaces of cast silicon rubber in the shaping mould 10 are pumped into 2 millibars vacuum, full real to guarantee the sizing material filling, there is not bubble; The silicone rubber material chemical stability of described use is good, but belongs to sticky colloid, and working pressure is poured into a mould not only production efficiency height, and fills well, and gas enclosure steeps, and working pressure is 70kg/cm
2, therefore, it is suitable that shaping mould sleeve 12 uses seamless steel pipe to be fabricated to, and wall thickness should be enough thick, proof strength; After pressurization injecting glue operation finishes, the shaping mould assembly is put into insulating box make vulcanizing treatment, use 200-220 ℃, 1～1.5 hour, all processing step was finished, and the pressure roll blank of fluoridize film is finished.
Above embodiment is used for illustrating this process, and protection scope of the present invention should not be only limited to embodiment, and those skilled in the art can be to its change that does not deviate from the present invention's spirit essence, and these changes still belong within the protection domain of the present invention.
Claims (6)
1. coated with teflon film silastic pressure roll manufacture method is characterized in that may further comprise the steps:
Be ready to shaping mould (10), described shaping mould (10) comprises chassis (11) sleeve (12), lid (14) and the trim ring (18) of being with boss, is provided with charging aperture (16) and exhaust outlet (17) described covering;
Pressure roll mandrel (13) is inserted in the hole (15) of described shaping mould chassis (11) central authorities; Be ready to the Teflon film sleeve pipe of required wall thickness, external diameter is enclosed between shaping mould sleeve (12) and the mandrel (13) less than finished product pressure roll external diameter (3～5) %, and two ends are pressed by trim ring (18) and die cap (14) respectively and clamped up and down;
By exhaust outlet (17) the silicon rubber casting space is vacuumized;
By charging aperture (16) silicon rubber material pressurization is injected described casting space till be full of;
The shaping mould assembly is put into insulating box and is done the silicon rubber vulcanization processing.
2. according to the pressure roll manufacture method of claim 1, it is characterized in that described Teflon film sleeve pipe made by the non-hot shortness PFA material that tetrafluoroethene and the copolymerization of golden fluoroalkyl vinyl ethers form, inwall is handled through radiation treatment or through sodium-naphthalene complex compound.
3. according to the pressure roll manufacture method of claim 2, the wall thickness that it is characterized in that described Teflon film sleeve pipe is 0.05mm-0.07mm.
4. according to the pressure roll manufacture method of claim 2, it is characterized in that described Teflon film internal surface of sleeve pipe scribbles binding agent before use.
5. according to claim 2,3 or 4 pressure roll manufacture method, it is characterized in that described silicon rubber material is a two-component silicone rubber.
6. according to the pressure roll manufacture method of claim 5, it is characterized in that the described vacuum that vacuumizes is 2 millibars; The silicon rubber pouring pressure is 70kg/cm; Described vulcanizing treatment was carried out under 200-220 ℃ 1～1.5 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95108370A CN1048211C (en) | 1995-07-17 | 1995-07-17 | Method for coating teflon film on silicon rubber pressure roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95108370A CN1048211C (en) | 1995-07-17 | 1995-07-17 | Method for coating teflon film on silicon rubber pressure roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1140651A true CN1140651A (en) | 1997-01-22 |
| CN1048211C CN1048211C (en) | 2000-01-12 |
Family
ID=5076782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95108370A Expired - Fee Related CN1048211C (en) | 1995-07-17 | 1995-07-17 | Method for coating teflon film on silicon rubber pressure roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1048211C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308130C (en) * | 2003-04-15 | 2007-04-04 | 陈贤斌 | Production method of coated pressure roll |
| CN100577716C (en) * | 2004-09-08 | 2010-01-06 | 爱沃特株式会社 | Fluororesin tubular film inner peripheral surface treatment method, fluororesin tubular film, fluororesin tubular film inner peripheral surface treatment device, PFA tubular film inner peripheral surface treatment method, PFA tubular film, PFA tubular film The inner peripheral surface treatment device and roller |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4761311A (en) * | 1987-02-19 | 1988-08-02 | The Mead Corporation | Process for glossing a developer sheet and an apparatus useful therein |
| JPH0814468B2 (en) * | 1993-06-28 | 1996-02-14 | 日本電気株式会社 | Leak inspection method for ammonia heat pipe |
-
1995
- 1995-07-17 CN CN95108370A patent/CN1048211C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308130C (en) * | 2003-04-15 | 2007-04-04 | 陈贤斌 | Production method of coated pressure roll |
| CN100577716C (en) * | 2004-09-08 | 2010-01-06 | 爱沃特株式会社 | Fluororesin tubular film inner peripheral surface treatment method, fluororesin tubular film, fluororesin tubular film inner peripheral surface treatment device, PFA tubular film inner peripheral surface treatment method, PFA tubular film, PFA tubular film The inner peripheral surface treatment device and roller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1048211C (en) | 2000-01-12 |
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Granted publication date: 20000112 Termination date: 20090817 |