CN108527741A - A kind of production technology of sealing ring - Google Patents
A kind of production technology of sealing ring Download PDFInfo
- Publication number
- CN108527741A CN108527741A CN201810555221.3A CN201810555221A CN108527741A CN 108527741 A CN108527741 A CN 108527741A CN 201810555221 A CN201810555221 A CN 201810555221A CN 108527741 A CN108527741 A CN 108527741A
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- mold
- grinding tool
- treatment
- demoulding
- 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
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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
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/005—Methods for mixing in batches
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/70—Maintenance
- B29C33/72—Cleaning
-
- 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
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/003—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
- B29L2031/265—Packings, Gaskets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of production technologies of sealing ring, include the following steps：S1:Material prepares；S2:Die treatment；S3:Dispensing prepares；S4:Single treatment；S5:After-treatment；S6:Demoulding processing；S7：Final molding；S8:Mold previous cleaning；S9:Mold is cleared up eventually.The production technology of this sealing ring chooses the polyurethane of suitable proportion, curing agent and mill base, and it is handled by uniform stirring, the manufactured sealing ring that can make is homogeneous, and the quality of sealing ring completed product can be not only improved by improved casting method, finished appearance is good, and the Production Time of sealing ring can be shortened, used grinding tool can also be cleared up, reduce the time for using mold next time, the quality of sealing ring can be not only improved by the production technology of this sealing ring, but also it can further shorten the manufactured time, it is simple for process, it is low to reduce production cost.Sealing ring made of so that has the very strong market competitiveness.
Description
Technical field
Invention is related to sealing ring manufacture technology field, specially a kind of production technology of sealing ring.
Background technology
Sealing element be prevent fluid or solia particle from leak and prevent between adjacent faying face introduced contaminants such as dust with
Moisture content etc. invades the material or part of the parts inside machinery equipment.Due to general with pressure, band temperature work, different structure, material
Sealing effect is different at different conditions for the sealing element of matter, once seal failure, by the use of the equipment directly affected, existing
Sealing ring make in, existing mold is provided with overflow edge slot, and the dispensing poured into a mould up is freely disperseed to both sides, can lead at this time
It causing the solidification hardness of each seal groove to differ, also will produce bubble, expects phenomenon less, 30% or more scrappage, yield rate is very low,
And quality is uneven, and stripping result is poor, causes poor quality, entire production process time long.
Invention content
Invention is designed to provide a kind of production technology of sealing ring, to solve mentioned above in the background art ask
Topic.
To achieve the above object, invention provides the following technical solutions：A kind of production technology of sealing ring, including following step
Suddenly：
S1:Material prepares, and chooses polyurethane and is preheated to 65-75 degree, melts curing agent 105-115 degree；
S2:Die treatment cleans the required grinding tool used with clear water, repeatedly rinse 3-5 times, then for grinding tool into
Row drying is then static to be cooled to room temperature up to exclusion residual on grinding tool；
S3:Dispensing prepares, and the polyurethane heated and curing agent is poured in agitating device, and carry out uniform stirring, up time
Needle stirs 3-5 minutes, in stirring counterclockwise 3-5 minutes, 4-6 times repeatedly, mill base is then added, is stirred again, suitable
Then one circle of hour hands stirring encloses, 5-7 times repeatedly in stirring one counterclockwise, until mixture is without apparent aberration；
S4:The mixture obtained by S3 processes is poured by the processed grinding tool of S3 processes, and adopts by single treatment
The mode completely poured is taken, is then scraped by plastic wipers auxiliary, qualification rate 98% obtains sealing ring semi-finished product；
S5:Obtained sealing ring semi-finished product are carried out vulcanizing treatment by after-treatment, and the time is 20 minutes, obtains vulcanizate；
S6:Demoulding processing, will carry out demoulding processing by sealing ring semi-finished product after vulcanizing treatment, and it is suitable to quote copper rod tip first
Overflow edge slot around loose sealing ring, is not necessarily to torn edges, demoulding use is filling from release agent spraying, and ejection is mist, uniformly, stripping result
Good, speed is 1000/20 minutes, and the thick embryo of sealing ring is obtained after demoulding；
S7：Final molding carries out edging processing for the thick embryo of sealing ring by grinding device, modifies flash, remove flash removed, obtain
Sealing ring completed product；
S8:Grinding tool after demoulding by high pressure air rifle and is coordinated copper scraper to clear up by mold previous cleaning, such
Do not hinder mold, the cleaning to slot, cavity very totally not will produce overlap, not had an impact to lower secondary mold；
S9:Mold is cleared up eventually, and grinding tool was in continuous production 3 days, and mold will produce matt, and die surface has polyurethane residue, first
120 degree of heating mould of elder generation, is sprinkled with mould cleaner, then cleared up with copper brush, until foreign residual, and hour can be with
The secondary mold of cleaning one.
Preferably, the S3:The ratio of polyurethane, curing agent and mill base is 50g in dispensing preparation process:8.5g:1g.
Compared with prior art, advantageous effect of the invention is：The production technology of this sealing ring chooses the poly- ammonia of suitable proportion
Ester, curing agent and mill base, and handled by uniform stirring, the manufactured sealing ring that can make is homogeneous, and by changing
Into casting method can not only improve the quality of sealing ring completed product, finished appearance is good, and can shorten the making of sealing ring
Time can also clear up used grinding tool, reduce the time for using mold next time, pass through this sealing ring
Production technology can not only improve the quality of sealing ring, but also can further shorten the manufactured time, simple for process, drop
Low production cost is low.Sealing ring made of so that has the very strong market competitiveness.
Specific implementation mode
Below in conjunction with inventive embodiments, the technical solution in inventive embodiments is clearly and completely described, is shown
So, described embodiment is only invention a part of the embodiment, instead of all the embodiments.Based on the implementation in invention
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
Invent the range of protection.
Embodiment one
Invention provides a kind of technical solution：A kind of production technology of sealing ring, includes the following steps：
S1:Material prepares, and chooses polyurethane and is preheated to 65 degree, 105 degree of curing agent of fusing；
S2:Die treatment cleans the required grinding tool used with clear water, rinses 3 times, grinding tool is carried out repeatedly then
Drying is then static to be cooled to room temperature up to exclusion residual on grinding tool；
S3:Dispensing prepares, and the polyurethane heated and curing agent is poured in agitating device, and carry out uniform stirring, up time
Needle stirs 3 minutes, in stirring counterclockwise 3 minutes, 4 times repeatedly, mill base is then added, is stirred again, stirs clockwise
A circle is mixed, is then enclosed in stirring one counterclockwise, 5 times repeatedly, until mixture is without apparent aberration；
S4:The mixture obtained by S3 processes is poured by the processed grinding tool of S3 processes, and adopts by single treatment
The mode completely poured is taken, is then scraped by plastic wipers auxiliary, qualification rate 98% obtains sealing ring semi-finished product；
S5:Obtained sealing ring semi-finished product are carried out vulcanizing treatment by after-treatment, and the time is 20 minutes, obtains vulcanizate；
S6:Demoulding processing, will carry out demoulding processing by sealing ring semi-finished product after vulcanizing treatment, and it is suitable to quote copper rod tip first
Overflow edge slot around loose sealing ring, is not necessarily to torn edges, demoulding use is filling from release agent spraying, and ejection is mist, uniformly, stripping result
Good, speed is 1000/20 minutes, and the thick embryo of sealing ring is obtained after demoulding；
S7：Final molding carries out edging processing for the thick embryo of sealing ring by grinding device, modifies flash, remove flash removed, obtain
Sealing ring completed product；
S8:Grinding tool after demoulding by high pressure air rifle and is coordinated copper scraper to clear up by mold previous cleaning, such
Do not hinder mold, the cleaning to slot, cavity very totally not will produce overlap, not had an impact to lower secondary mold；
S9:Mold is cleared up eventually, and grinding tool was in continuous production 3 days, and mold will produce matt, and die surface has polyurethane residue, first
120 degree of heating mould of elder generation, is sprinkled with mould cleaner, then cleared up with copper brush, until foreign residual, and hour can be with
The secondary mold of cleaning one.
The S3:The ratio of polyurethane, curing agent and mill base is 50g in dispensing preparation process:8.5g:1g.
Embodiment two
Invention provides a kind of technical solution：A kind of production technology of sealing ring, includes the following steps：
S1:Material prepares, and chooses polyurethane and is preheated to 70 degree, 110 degree of curing agent of fusing；
S2:Die treatment cleans the required grinding tool used with clear water, rinses 4 times, grinding tool is carried out repeatedly then
Drying is then static to be cooled to room temperature up to exclusion residual on grinding tool；
S3:Dispensing prepares, and the polyurethane heated and curing agent is poured in agitating device, and carry out uniform stirring, up time
Needle stirs 4 minutes, in stirring counterclockwise 4 minutes, 5 times repeatedly, mill base is then added, is stirred again, stirs clockwise
A circle is mixed, is then enclosed in stirring one counterclockwise, 6 times repeatedly, until mixture is without apparent aberration；
S4:The mixture obtained by S3 processes is poured by the processed grinding tool of S3 processes, and adopts by single treatment
The mode completely poured is taken, is then scraped by plastic wipers auxiliary, qualification rate 98% obtains sealing ring semi-finished product；
S5:Obtained sealing ring semi-finished product are carried out vulcanizing treatment by after-treatment, and the time is 20 minutes, obtains vulcanizate；
S6:Demoulding processing, will carry out demoulding processing by sealing ring semi-finished product after vulcanizing treatment, and it is suitable to quote copper rod tip first
Overflow edge slot around loose sealing ring, is not necessarily to torn edges, demoulding use is filling from release agent spraying, and ejection is mist, uniformly, stripping result
Good, speed is 1000/20 minutes, and the thick embryo of sealing ring is obtained after demoulding；
S7：Final molding carries out edging processing for the thick embryo of sealing ring by grinding device, modifies flash, remove flash removed, obtain
Sealing ring completed product；
S8:Grinding tool after demoulding by high pressure air rifle and is coordinated copper scraper to clear up by mold previous cleaning, such
Do not hinder mold, the cleaning to slot, cavity very totally not will produce overlap, not had an impact to lower secondary mold；
S9:Mold is cleared up eventually, and grinding tool was in continuous production 3 days, and mold will produce matt, and die surface has polyurethane residue, first
120 degree of heating mould of elder generation, is sprinkled with mould cleaner, then cleared up with copper brush, until foreign residual, and hour can be with
The secondary mold of cleaning one.
The S3:The ratio of polyurethane, curing agent and mill base is 50g in dispensing preparation process:8.5g:1g.
Embodiment three
Invention provides a kind of technical solution：A kind of production technology of sealing ring, includes the following steps：
S1:Material prepares, and chooses polyurethane and is preheated to 75 degree, 115 degree of curing agent of fusing；
S2:Die treatment cleans the required grinding tool used with clear water, rinses 5 times, grinding tool is carried out repeatedly then
Drying is then static to be cooled to room temperature up to exclusion residual on grinding tool；
S3:Dispensing prepares, and the polyurethane heated and curing agent is poured in agitating device, and carry out uniform stirring, up time
Needle stirs 5 minutes, in stirring counterclockwise 5 minutes, 6 times repeatedly, mill base is then added, is stirred again, stirs clockwise
A circle is mixed, is then enclosed in stirring one counterclockwise, 7 times repeatedly, until mixture is without apparent aberration；
S4:The mixture obtained by S3 processes is poured by the processed grinding tool of S3 processes, and adopts by single treatment
The mode completely poured is taken, is then scraped by plastic wipers auxiliary, qualification rate 98% obtains sealing ring semi-finished product；
S5:Obtained sealing ring semi-finished product are carried out vulcanizing treatment by after-treatment, and the time is 20 minutes, obtains vulcanizate；
S6:Demoulding processing, will carry out demoulding processing by sealing ring semi-finished product after vulcanizing treatment, and it is suitable to quote copper rod tip first
Overflow edge slot around loose sealing ring, is not necessarily to torn edges, demoulding use is filling from release agent spraying, and ejection is mist, uniformly, stripping result
Good, speed is 1000/20 minutes, and the thick embryo of sealing ring is obtained after demoulding；
S7：Final molding carries out edging processing for the thick embryo of sealing ring by grinding device, modifies flash, remove flash removed, obtain
Sealing ring completed product；
S8:Grinding tool after demoulding by high pressure air rifle and is coordinated copper scraper to clear up by mold previous cleaning, such
Do not hinder mold, the cleaning to slot, cavity very totally not will produce overlap, not had an impact to lower secondary mold；
S9:Mold is cleared up eventually, and grinding tool was in continuous production 3 days, and mold will produce matt, and die surface has polyurethane residue, first
120 degree of heating mould of elder generation, is sprinkled with mould cleaner, then cleared up with copper brush, until foreign residual, and hour can be with
The secondary mold of cleaning one.
The S3:The ratio of polyurethane, curing agent and mill base is 50g in dispensing preparation process:8.5g:1g.
By compare above three groups of embodiments we it can be seen that required sealing ring can be made in above-mentioned three groups of embodiments,
And this sealing ring manufacture craft chooses polyurethane, curing agent and the mill base of suitable proportion, and handled by uniform stirring, it can
So that manufactured sealing ring it is homogeneous, and can not only improve by improved casting method the matter of sealing ring completed product
Amount, finished appearance is good, and can shorten the Production Time of sealing ring, and used grinding tool can also be cleared up, and reduces
The time for using mold next time, the quality of sealing ring can be not only improved by the production technology of this sealing ring, but also
The manufactured time can also further be shortened, it is simple for process, it is low to reduce production cost.Sealing ring made of so that has very strong
The market competitiveness.
While there has been shown and described that the embodiment invented, for the ordinary skill in the art, Ke Yili
Solution can carry out these embodiments in the case where not departing from the principle and spirit of invention a variety of variations, modification, replace and become
The range of type, invention is defined by the appended claims and the equivalents thereof.
Claims (2)
1. a kind of production technology of sealing ring, it is characterised in that：Include the following steps,
S1:Material prepares, and chooses polyurethane and is preheated to 65-75 degree, melts curing agent 105-115 degree；
S2:Die treatment cleans the required grinding tool used with clear water, repeatedly rinse 3-5 times, then for grinding tool into
Row drying is then static to be cooled to room temperature up to exclusion residual on grinding tool；
S3:Dispensing prepares, and the polyurethane heated and curing agent is poured in agitating device, and carry out uniform stirring, up time
Needle stirs 3-5 minutes, in stirring counterclockwise 3-5 minutes, 4-6 times repeatedly, mill base is then added, is stirred again, suitable
Then one circle of hour hands stirring encloses, 5-7 times repeatedly in stirring one counterclockwise, until mixture is without apparent aberration；
S4:The mixture obtained by S3 processes is poured by the processed grinding tool of S3 processes, and adopts by single treatment
The mode completely poured is taken, is then scraped by plastic wipers auxiliary, qualification rate 98% obtains sealing ring semi-finished product；
S5:Obtained sealing ring semi-finished product are carried out vulcanizing treatment by after-treatment, and the time is 20 minutes, obtains vulcanizate；
S6:Demoulding processing, will carry out demoulding processing by sealing ring semi-finished product after vulcanizing treatment, and it is suitable to quote copper rod tip first
Overflow edge slot around loose sealing ring, is not necessarily to torn edges, demoulding use is filling from release agent spraying, and ejection is mist, uniformly, stripping result
Good, speed is 1000/20 minutes, and the thick embryo of sealing ring is obtained after demoulding；
S7：Final molding carries out edging processing for the thick embryo of sealing ring by grinding device, modifies flash, remove flash removed, obtain
Sealing ring completed product；
S8:Grinding tool after demoulding by high pressure air rifle and is coordinated copper scraper to clear up by mold previous cleaning, such
Do not hinder mold, the cleaning to slot, cavity very totally not will produce overlap, not had an impact to lower secondary mold；
S9:Mold is cleared up eventually, and grinding tool was in continuous production 3 days, and mold will produce matt, and die surface has polyurethane residue, first
120 degree of heating mould of elder generation, is sprinkled with mould cleaner, then cleared up with copper brush, until foreign residual, and hour can be with
The secondary mold of cleaning one.
2. a kind of production technology of sealing ring according to claim 1, it is characterised in that：The S3:Dispensing preparation process
The ratio of middle polyurethane, curing agent and mill base is 50g:8.5g:1g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810555221.3A CN108527741A (en) | 2018-06-01 | 2018-06-01 | A kind of production technology of sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810555221.3A CN108527741A (en) | 2018-06-01 | 2018-06-01 | A kind of production technology of sealing ring |
Publications (1)
| Publication Number | Publication Date |
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| CN108527741A true CN108527741A (en) | 2018-09-14 |
Family
ID=63472012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810555221.3A Pending CN108527741A (en) | 2018-06-01 | 2018-06-01 | A kind of production technology of sealing ring |
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| Country | Link |
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| CN (1) | CN108527741A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239127A (en) * | 2019-07-03 | 2019-09-17 | 辽宁科技大学 | A kind of plastic circle molding machine and method |
| CN111361170A (en) * | 2020-03-06 | 2020-07-03 | 浙江顺惠密封件有限公司 | Preparation method of oil seal |
| CN111516191A (en) * | 2020-05-01 | 2020-08-11 | 董京刚 | Automobile sealing strip and preparation system and preparation method thereof |
| CN111660472A (en) * | 2020-06-08 | 2020-09-15 | 西安微电子技术研究所 | Method for cleaning residues in mold cavity of mold box in plastic package mold |
| CN112318805A (en) * | 2020-09-07 | 2021-02-05 | 苏州贤辉新纺织科技有限公司 | Process method for molding polyester material automotive interior by adopting low-temperature compression molding |
| CN112776236A (en) * | 2021-02-04 | 2021-05-11 | 优泰科(苏州)密封技术有限公司 | Packing seal forming method for petroleum fracturing truck |
| CN113713436A (en) * | 2021-07-09 | 2021-11-30 | 姚纯 | Bubble removing method for molten material for sealing ring production |
| CN116494448A (en) * | 2023-05-04 | 2023-07-28 | 浙江天玛密封技术有限公司 | Manufacturing die of sealing ring and working method thereof |
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| JP2002172630A (en) * | 2000-12-06 | 2002-06-18 | Toray Ind Inc | Vacuum-molding method for frp |
| CN101323157A (en) * | 2008-07-14 | 2008-12-17 | 东莞市新志密封技术有限公司 | Method for producing sealing ring |
| CN202200464U (en) * | 2011-08-09 | 2012-04-25 | 金冠虎 | Automatic release agent sprayer for injection molding machine |
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2018
- 2018-06-01 CN CN201810555221.3A patent/CN108527741A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002172630A (en) * | 2000-12-06 | 2002-06-18 | Toray Ind Inc | Vacuum-molding method for frp |
| CN101323157A (en) * | 2008-07-14 | 2008-12-17 | 东莞市新志密封技术有限公司 | Method for producing sealing ring |
| CN202200464U (en) * | 2011-08-09 | 2012-04-25 | 金冠虎 | Automatic release agent sprayer for injection molding machine |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239127A (en) * | 2019-07-03 | 2019-09-17 | 辽宁科技大学 | A kind of plastic circle molding machine and method |
| CN110239127B (en) * | 2019-07-03 | 2023-09-15 | 辽宁科技大学 | Plastic ring forming device and method |
| CN111361170A (en) * | 2020-03-06 | 2020-07-03 | 浙江顺惠密封件有限公司 | Preparation method of oil seal |
| CN111516191A (en) * | 2020-05-01 | 2020-08-11 | 董京刚 | Automobile sealing strip and preparation system and preparation method thereof |
| CN111516191B (en) * | 2020-05-01 | 2022-01-11 | 江苏沃凯氟密封科技有限公司 | Automobile sealing strip and preparation system and preparation method thereof |
| CN111660472A (en) * | 2020-06-08 | 2020-09-15 | 西安微电子技术研究所 | Method for cleaning residues in mold cavity of mold box in plastic package mold |
| CN112318805A (en) * | 2020-09-07 | 2021-02-05 | 苏州贤辉新纺织科技有限公司 | Process method for molding polyester material automotive interior by adopting low-temperature compression molding |
| CN112776236A (en) * | 2021-02-04 | 2021-05-11 | 优泰科(苏州)密封技术有限公司 | Packing seal forming method for petroleum fracturing truck |
| CN113713436A (en) * | 2021-07-09 | 2021-11-30 | 姚纯 | Bubble removing method for molten material for sealing ring production |
| CN116494448A (en) * | 2023-05-04 | 2023-07-28 | 浙江天玛密封技术有限公司 | Manufacturing die of sealing ring and working method thereof |
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Application publication date: 20180914 |