CN115042358A - Method for coating polytetrafluoroethylene sealing ring - Google Patents
Method for coating polytetrafluoroethylene sealing ring Download PDFInfo
- Publication number
- CN115042358A CN115042358A CN202210680098.4A CN202210680098A CN115042358A CN 115042358 A CN115042358 A CN 115042358A CN 202210680098 A CN202210680098 A CN 202210680098A CN 115042358 A CN115042358 A CN 115042358A
- Authority
- CN
- China
- Prior art keywords
- bending
- polytetrafluoroethylene sealing
- temperature
- shaping
- sealing ring
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 70
- -1 polytetrafluoroethylene Polymers 0.000 title claims abstract description 42
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 42
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 42
- 238000000576 coating method Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000011248 coating agent Substances 0.000 title claims description 12
- 238000005452 bending Methods 0.000 claims abstract description 51
- 238000001035 drying Methods 0.000 claims abstract description 36
- 238000007493 shaping process Methods 0.000 claims abstract description 29
- 238000005507 spraying Methods 0.000 claims abstract description 15
- 239000003292 glue Substances 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000004073 vulcanization Methods 0.000 claims description 10
- 238000001179 sorption measurement Methods 0.000 claims description 6
- 238000009966 trimming Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229940045860 white wax Drugs 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/08—Coating a former, core or other substrate by spraying or fluidisation, e.g. spraying powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/02—Deburring or deflashing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/38—Moulds, cores or other substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/42—Removing articles from moulds, cores or other substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
Abstract
The invention discloses a polytetrafluoroethylene sealing ring coating method, which specifically comprises the following steps: the method comprises the following steps: spraying, namely spraying glue on one side of the annular polytetrafluoroethylene sealing gasket, and naturally suspending and drying after spraying; step two: bending, namely placing the dried annular polytetrafluoroethylene sealing gasket in the first step into bending equipment, performing primary bending and edge folding through high temperature, performing the next step after edge folding is completed and natural cooling, replacing according to the position where the annular polytetrafluoroethylene sealing gasket is placed for the first time, performing secondary bending and edge folding again, and placing a shaping sheet; according to the design of the invention, the equipment and the die are adopted for auxiliary processing, so that the production efficiency is further improved, the shaping piece is driven by the bending equipment to carry out three times of bending, flanging and shaping, the integral automation degree is improved, the inconvenience of manual operation is avoided, automatic uniform glue spraying can be realized, the working efficiency is improved, and the phenomenon of glue overflow cannot occur in the later-stage processing.
Description
Technical Field
The invention belongs to the technical field of sealing ring processing, and particularly relates to a polytetrafluoroethylene sealing ring coating method.
Background
Polytetrafluoroethylene is a high molecular polymer prepared by polymerization using tetrafluoroethylene as a monomer. White wax, translucency, heat resistance and cold resistance are excellent, and the glass can be used for a long time at minus 180-260 ℃. The material has the characteristics of acid resistance, alkali resistance and various organic solvents resistance, and is almost insoluble in all solvents. Meanwhile, the polytetrafluoroethylene has the characteristic of high temperature resistance, has extremely low friction coefficient, can be used as an ideal coating for easily cleaning the inner layer of the water pipe after being used as a lubricating effect, and therefore, the sealing ring prepared from the polytetrafluoroethylene material can be applied to various fields.
The existing polytetrafluoroethylene sealing ring is coated manually in coating, the method not only ensures that the working efficiency is lower, but also causes the phenomenon of uneven coating, even in the later-stage processing, the coated glue overflows from the inner side to influence the attractiveness and later-stage sealing, meanwhile, in the existing coating production, the bending and shaping are realized manually, the working efficiency is lower, the requirement for large-batch production cannot be met, and thus, the improved space exists.
Disclosure of Invention
The invention aims to provide a polytetrafluoroethylene sealing ring coating method to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the polytetrafluoroethylene sealing ring coating method specifically comprises the following steps:
the method comprises the following steps: spraying, namely spraying glue on one side of the annular polytetrafluoroethylene sealing gasket, and naturally suspending and drying after spraying;
step two: bending, namely placing the dried annular polytetrafluoroethylene sealing gasket in the first step into bending equipment, performing primary bending and edge folding through high temperature, performing the next step after edge folding is completed and natural cooling, replacing according to the position where the annular polytetrafluoroethylene sealing gasket is placed for the first time, performing secondary bending and edge folding again, placing a shaping sheet, and driving the shaping sheet through the bending equipment to perform tertiary bending and edge folding processing and shaping;
step three: assembling, primarily cutting the sealing strip, and clamping the sealing strip into the polytetrafluoroethylene sealing gasket which is shaped in the second step;
step four: trimming, removing the redundant sealing strip to enable the length of the sealing strip to be equal to the perimeter of the polytetrafluoroethylene sealing gasket, then vulcanizing, sleeving the sealing strip on a special shaping mold for shaping after the vulcanization is finished, ensuring the shape of the finished product to be unchanged, and manually trimming the polytetrafluoroethylene sealing gasket protruding out of the sealing strip after the shaping is finished;
step five; and (5) finishing.
As a preferred technical solution in the present invention, in the step one, the drying time is affected by air humidity, and specifically, the following steps are performed:
a: when the air humidity is 30-75% and the temperature is 20-36 ℃, the drying time is 8-12 min;
b: when the air humidity is less than 30% and the temperature is less than 20 ℃, the drying time is 12-20 min;
c: when the air humidity is less than 30% and the temperature is more than 36 ℃, the drying time is 7-12 min;
d: when the humidity of air is more than 75% and the temperature is less than 20 ℃, the drying time is 30-50 min;
e: when the humidity of the air is more than 75% and the temperature is more than 36 ℃, the drying time is 12-15 min.
As a preferable aspect of the present invention, in the second step, an adsorption unit disposed outside the processing area of the bending device is further provided, and the adsorption unit is configured to adsorb and discharge odor generated during the high-temperature processing of the seal ring.
In the second step, the processing temperature of the first bending and flanging equipment is 106-112 ℃, the first bending and flanging equipment is shaped by high temperature, the processing temperature of the second bending and flanging equipment and the third bending and flanging equipment is 120-135 ℃, and the time for heating each bending is 1-3.5 min.
As a preferred technical scheme in the invention, in the third step, the length of the sealing strip which is initially cut is greater than the perimeter of the polytetrafluoroethylene sealing gasket which is bent and shaped, so that the influence on the quality of the finished product due to the fact that the sealing strip is short and cannot be installed is avoided.
As a preferable technical scheme in the invention, the vulcanization time in the fourth step is 2.8-4 min, and the setting time is 4-6 min.
As a preferable technical scheme in the invention, the surface of the product trimmed in the fourth step is smooth, so that the normal use in the later period is ensured, and no bulge or burr structure exists.
Compared with the prior art, the invention has the beneficial effects that:
by the aid of the design, automatic uniform glue spraying can be achieved, working efficiency is improved, glue overflow and the phenomena of influencing attractiveness and sealing cannot occur in later-stage processing, equipment and a mold are adopted for auxiliary processing in subsequent bending and shaping, production efficiency is further improved, drying time is selected according to processing humidity, and product quality can be improved through later-stage vulcanization.
Drawings
FIG. 1 is a schematic diagram of the coating method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, the present invention provides a technical solution: the polytetrafluoroethylene sealing ring coating method specifically comprises the following steps:
the method comprises the following steps: spraying, namely spraying glue on one side of the annular polytetrafluoroethylene sealing gasket, and naturally suspending and drying after spraying is finished, so that automatic uniform glue spraying can be realized, the working efficiency is improved, and meanwhile, the phenomena of glue overflow and influence on attractiveness and sealing in later-stage processing can be avoided;
step two: bending, placing the dried annular polytetrafluoroethylene sealing gasket in the first step in bending equipment, performing first bending and flanging at high temperature, finishing flanging and naturally cooling, entering the next step, replacing according to the position where the annular polytetrafluoroethylene sealing gasket is placed for the first time, performing second bending and flanging again, placing a shaping sheet, driving the shaping sheet to perform third bending and flanging processing and shaping through the bending equipment, performing auxiliary processing in subsequent bending and shaping by adopting equipment and a mould, further improving the production efficiency, selecting drying time according to the humidity in the processing, and performing later-stage vulcanization, and both realizing the improvement of the product quality;
step three: assembling, primarily cutting the sealing strip, and clamping the sealing strip into the polytetrafluoroethylene sealing gasket which is shaped in the second step;
step four: trimming, removing the redundant sealing strip to enable the length of the sealing strip to be equal to the perimeter of the polytetrafluoroethylene sealing gasket, then vulcanizing, sleeving the sealing strip on a special shaping mold for shaping after the vulcanization is finished, and manually trimming the polytetrafluoroethylene sealing gasket protruding out of the sealing strip after the shaping is finished;
step five; and (5) finishing.
In this embodiment, in the step one, the drying time is affected by the air humidity, which is specifically as follows:
a: when the air humidity is 30-75% and the temperature is 20-36 ℃, the drying time is 8 min;
b: when the air humidity is less than 30% and the temperature is less than 20 ℃, the drying time is 12 min;
c: when the air humidity is less than 30% and the temperature is more than 36 ℃, the drying time is 7 min;
d: when the humidity of air is more than 75% and the temperature is less than 20 ℃, the drying time is 30 min;
e: when the air humidity is more than 75% and the temperature is more than 36 ℃, the drying time is 12 min.
In this embodiment, in the second step, the sealing ring bending device further includes an adsorption component disposed outside the machining area of the bending device, and the adsorption component is used for adsorbing and discharging the odor of the sealing ring in the high-temperature machining process.
In the second step, the processing temperature of the first bending and flanging device is 106 ℃, the processing temperature of the second and third bending and flanging devices is 120 ℃, and the heating time for each bending is 1 min.
In this embodiment, in the third step, the length of the sealing strip which is initially cut is greater than the perimeter of the polytetrafluoroethylene sealing gasket after bending and shaping.
In this embodiment, the time for vulcanization in step four is 2.8min, and the time for shaping is 4 min.
In this embodiment, the surface of the product trimmed in step four is smooth without any protrusion or burr structure.
Example 2
The difference from example 1 is that: in this embodiment, in the step one, the drying time is affected by the air humidity, which is specifically as follows:
a: when the air humidity is 45% and the temperature is 28 ℃, the drying time is 10 min;
b: when the air humidity is less than 30% and the temperature is less than 20 ℃, the drying time is 15 min;
c: when the air humidity is less than 30% and the temperature is more than 36 ℃, the drying time is 10 min;
d: when the humidity of air is more than 75% and the temperature is less than 20 ℃, the drying time is 40 min;
e: when the air humidity is more than 75% and the temperature is more than 36 ℃, the drying time is 13 min.
In the second step, the processing temperature of the first bending and flanging device is 110 ℃, the processing temperature of the second bending and flanging device and the processing temperature of the third bending and flanging device are 128 ℃, and the heating time for each bending is 2.5 min.
In this embodiment, the time for vulcanization in step four is 3min, and the time for shaping is 5 min.
Example 3
The difference from the above embodiment is that: in this embodiment, in the step one, the drying time is affected by the air humidity, which is specifically as follows:
a: when the air humidity is 75% and the temperature is 6 ℃, the drying time is 12 min;
b: when the air humidity is less than 30% and the temperature is less than 20 ℃, the drying time is 20 min;
c: when the air humidity is less than 30% and the temperature is more than 36 ℃, the drying time is 12 min;
d: when the humidity of air is more than 75% and the temperature is less than 20 ℃, the drying time is 50 min;
e: when the air humidity is more than 75% and the temperature is more than 36 ℃, the drying time is 15 min.
In the second step, the processing temperature of the first bending and flanging device is 112 ℃, the processing temperature of the second and third bending and flanging devices is 120-135 ℃, and the heating time for each bending is 3.5 min.
In this embodiment, the time for vulcanization in step four is 4min, and the time for shaping is 6 min.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The polytetrafluoroethylene sealing ring coating method is characterized by comprising the following steps: the method specifically comprises the following steps:
the method comprises the following steps: spraying, namely spraying glue on one side of the annular polytetrafluoroethylene sealing gasket, and naturally suspending and drying after spraying;
step two: bending, namely placing the dried annular polytetrafluoroethylene sealing gasket in the first step into bending equipment, performing primary bending and edge folding through high temperature, performing the next step after edge folding is completed and natural cooling, replacing according to the position where the annular polytetrafluoroethylene sealing gasket is placed for the first time, performing secondary bending and edge folding again, placing a shaping sheet, and driving the shaping sheet through the bending equipment to perform tertiary bending and edge folding processing and shaping;
step three: assembling, primarily cutting the sealing strip, and clamping the sealing strip into the polytetrafluoroethylene sealing gasket which is shaped in the second step;
step four: trimming, removing the redundant sealing strip to enable the length of the sealing strip to be equal to the perimeter of the polytetrafluoroethylene sealing gasket, then vulcanizing, sleeving the sealing strip on a special shaping mold for shaping after the vulcanization is finished, and manually trimming the polytetrafluoroethylene sealing gasket protruding out of the sealing strip after the shaping is finished;
step five; and (5) finishing.
2. The method for coating a polytetrafluoroethylene sealing ring according to claim 1, wherein the method comprises the following steps: in the first step, the drying time is affected by the air humidity, and the following is specific:
a: when the air humidity is 30-75% and the temperature is 20-36 ℃, the drying time is 8-12 min;
b: when the air humidity is less than 30% and the temperature is less than 20 ℃, the drying time is 12-20 min;
c: when the air humidity is less than 30% and the temperature is more than 36 ℃, the drying time is 7-12 min;
d: when the humidity of air is more than 75% and the temperature is less than 20 ℃, the drying time is 30-50 min;
e: and when the humidity of the air is more than 75% and the temperature is more than 36 ℃, the drying time is 12-15 min.
3. The method for coating a polytetrafluoroethylene sealing ring according to claim 1, wherein the method comprises the following steps: and in the second step, the sealing ring bending device further comprises an adsorption assembly arranged outside the machining area of the bending device, and the adsorption assembly is used for adsorbing and discharging peculiar smell of the sealing ring in high-temperature machining.
4. The method for coating a polytetrafluoroethylene sealing ring according to claim 1, wherein: in the second step, the processing temperature of the first bending and flanging equipment is 106-112 ℃, the processing temperature of the second and third bending and flanging equipment is 120-135 ℃, and the time for heating in each bending is 1-3.5 min.
5. The method for coating a polytetrafluoroethylene sealing ring according to claim 1, wherein: in the third step, the length of the sealing strip which is initially cut is larger than the perimeter of the polytetrafluoroethylene sealing gasket which is bent and shaped.
6. The method for coating a polytetrafluoroethylene sealing ring according to claim 1, wherein: the vulcanization time in the fourth step is 2.8-4 min, and the shaping time is 4-6 min.
7. The method for coating a polytetrafluoroethylene sealing ring according to claim 1, wherein: and D, the surface of the product trimmed in the fourth step is smooth and has no any bulge or burr structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210680098.4A CN115042358A (en) | 2022-06-15 | 2022-06-15 | Method for coating polytetrafluoroethylene sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210680098.4A CN115042358A (en) | 2022-06-15 | 2022-06-15 | Method for coating polytetrafluoroethylene sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115042358A true CN115042358A (en) | 2022-09-13 |
Family
ID=83160985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210680098.4A Pending CN115042358A (en) | 2022-06-15 | 2022-06-15 | Method for coating polytetrafluoroethylene sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115042358A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01216819A (en) * | 1988-02-25 | 1989-08-30 | Mitsubishi Plastics Ind Ltd | Method of bending plastic sheet |
| JP2007021943A (en) * | 2005-07-19 | 2007-02-01 | Nakanishi Metal Works Co Ltd | Manufacturing method of sealing material |
| US20120038117A1 (en) * | 2009-01-20 | 2012-02-16 | Springseal, Inc. | Flexible hinge gasket |
| CN103909595A (en) * | 2012-12-28 | 2014-07-09 | 西北橡胶塑料研究设计院 | Molding technology for fluoroplastic-coated O-type rubber ring |
| CN208197552U (en) * | 2018-01-24 | 2018-12-07 | 河北伟源橡塑设备有限公司 | A kind of rubber seal tape molding machine |
| CN209257464U (en) * | 2018-11-23 | 2019-08-16 | 北京华通橡塑制品有限公司清河分公司 | A kind of sealing strip forming machine |
| CN110508449A (en) * | 2019-08-26 | 2019-11-29 | 深圳市道丰宁科技有限公司 | A kind of automatically dropping glue technique of sealing ring |
| CN111231282A (en) * | 2020-03-01 | 2020-06-05 | 薛继纲 | Injection molding mechanism of bending |
| CN212666731U (en) * | 2020-07-15 | 2021-03-09 | 泉州市方森机械工贸有限公司 | Edge roller with edge covering function |
| CN113829552A (en) * | 2021-09-15 | 2021-12-24 | 西北橡胶塑料研究设计院有限公司 | Method for manufacturing annular special-shaped rubber-plastic metal composite sealing element |
-
2022
- 2022-06-15 CN CN202210680098.4A patent/CN115042358A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01216819A (en) * | 1988-02-25 | 1989-08-30 | Mitsubishi Plastics Ind Ltd | Method of bending plastic sheet |
| JP2007021943A (en) * | 2005-07-19 | 2007-02-01 | Nakanishi Metal Works Co Ltd | Manufacturing method of sealing material |
| US20120038117A1 (en) * | 2009-01-20 | 2012-02-16 | Springseal, Inc. | Flexible hinge gasket |
| CN103909595A (en) * | 2012-12-28 | 2014-07-09 | 西北橡胶塑料研究设计院 | Molding technology for fluoroplastic-coated O-type rubber ring |
| CN208197552U (en) * | 2018-01-24 | 2018-12-07 | 河北伟源橡塑设备有限公司 | A kind of rubber seal tape molding machine |
| CN209257464U (en) * | 2018-11-23 | 2019-08-16 | 北京华通橡塑制品有限公司清河分公司 | A kind of sealing strip forming machine |
| CN110508449A (en) * | 2019-08-26 | 2019-11-29 | 深圳市道丰宁科技有限公司 | A kind of automatically dropping glue technique of sealing ring |
| CN111231282A (en) * | 2020-03-01 | 2020-06-05 | 薛继纲 | Injection molding mechanism of bending |
| CN212666731U (en) * | 2020-07-15 | 2021-03-09 | 泉州市方森机械工贸有限公司 | Edge roller with edge covering function |
| CN113829552A (en) * | 2021-09-15 | 2021-12-24 | 西北橡胶塑料研究设计院有限公司 | Method for manufacturing annular special-shaped rubber-plastic metal composite sealing element |
Non-Patent Citations (1)
| Title |
|---|
| 岳德茂主编: "《印刷科技实用手册 第3分册 印刷器材篇》", 印刷工业出版社, pages: 368 - 369 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109093912B (en) | Forming process of hollow perforated silicone rubber sealing element for aviation | |
| CN115042358A (en) | Method for coating polytetrafluoroethylene sealing ring | |
| CN108083657B (en) | Hollow glass and production process thereof | |
| CN109130149A (en) | A kind of method preparing sole, sole, shoes and prefabricated TPU membrane | |
| CN106235513B (en) | Outsole, method for attaching outsole to midsole and manufactured sole | |
| CN109291582A (en) | A kind of high durable resin tile and its manufacturing process | |
| CN104723644A (en) | Surface skin absorbing process | |
| CN109679540B (en) | High-temperature-resistant adhesive and preparation method of high-temperature-resistant aluminum foil tape | |
| CN204043159U (en) | Drain pan device and air-conditioner | |
| CN114347538A (en) | Preparation process of special protective gloves | |
| CN109027223A (en) | High-performance rubber composite seal and its manufacturing method | |
| TW201515819A (en) | Method for manufacturing steering wheel cover | |
| JP2001280504A (en) | Rubber gasket structure and manufacturing method therefor | |
| CN109532039B (en) | Forming process for wrapping teflon film outside silica gel sealing element | |
| CN112223603A (en) | Manufacturing method and die of sealing ring | |
| CN115071138B (en) | Large-size fluororubber sealing ring and preparation method thereof | |
| CN106714560A (en) | Breadmaking tray and manufacturing method therefor | |
| CN105563712A (en) | Production process of cable clamp insulating cover | |
| JP2001065698A (en) | Resin coated rubber gasket and manufacture thereof | |
| JPH1052885A (en) | Rubber molding of two-layer structure and its manufacture | |
| CN216042299U (en) | Building engineering interior decoration is with type of ventilating sculpture aluminum plate | |
| CN219317604U (en) | Sealing ring structure | |
| CN109206801A (en) | A kind of polyvinylidene difluoride film and preparation method thereof | |
| CN110822093B (en) | Silicone rubber sealing element | |
| KR20030019795A (en) | the production method for a teflon coated rubber product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220913 |
|
| RJ01 | Rejection of invention patent application after publication |