CN102628260B - A kind of vulcanizing press sulfuration processing method of checkdam air bag - Google Patents
A kind of vulcanizing press sulfuration processing method of checkdam air bag Download PDFInfo
- Publication number
- CN102628260B CN102628260B CN201210110046.XA CN201210110046A CN102628260B CN 102628260 B CN102628260 B CN 102628260B CN 201210110046 A CN201210110046 A CN 201210110046A CN 102628260 B CN102628260 B CN 102628260B
- Authority
- CN
- China
- Prior art keywords
- air bag
- layer
- rubber
- checkdam
- sulfuration
- 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.)
- Active
Links
Landscapes
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
The present invention relates to a kind of checkdam air bag and vulcanizing press sulfuration processing method thereof, belong to checkdam air bag and processing method technical field thereof.Comprise rubber inner layer, rubber outer, be folded with casing play therebetween, three to be combined as a whole structure by sulfurization technology.Processing method: 1), roll rubberizing; 2), shaping; 3), presulfurization; 4), sulfuration; 5), air bag finishing; 6), tightness, withstand voltage test.The present invention can provide the checkdam air bag of a kind of high-air-tightness, high compactness, high physical property, and the processing method of this air bag is simple and direct, is easy to operation.
Description
Technical field
The present invention relates to a kind of checkdam air bag and vulcanizing press sulfuration processing method thereof, belong to checkdam air bag and processing method technical field thereof.
Background technology
At present, existing air bag is adding man-hour, shaping rear direct sulfuration, the air bag tightness of making like this, tight type, physical all general.
Summary of the invention
The object of the invention is to the deficiency solving the existence of above-mentioned prior art, provide the checkdam air bag of a kind of high-air-tightness, high compactness, high physical property, the processing method of this air bag is simple and direct, is easy to operation.
The present invention is achieved through the following technical solutions:
A kind of checkdam air bag, its special character is to comprise rubber inner layer 1, rubber outer 2, is folded with casing play 3 therebetween, and three to be combined as a whole structure by sulfurization technology;
Described rubber inner layer 1, rubber outer 2 comprise cord fabric and rubber layer, and cord fabric and rubber layer are fitted tightly by calendering technology and be formed as one;
Described casing play 3 is 2-10 layer, and every layer of casing play 3 comprises cord fabric and rubber layer, and cord fabric and rubber layer are fitted tightly by calendering technology and be integrated, and form one deck casing play 3, odd-level is contrary with cord 5 angle of inclination of even level cord fabric;
The angle of inclination a of described cord 5 is 40-60 degree;
Described cord fabric is terylene cord fabric or polyamide cord fabric;
A vulcanizing press sulfuration processing method for checkdam air bag, its special character is to comprise following technological process:
1, rubberizing is rolled
Get one deck cord fabric, at its calendered rubber layer, rubber layer and cord fabric are combined as a whole, form rubber inner layer 1, rubber outer 2, casing play 3 are in like manner formed;
2, shaping
Rubber inner layer 1 is bedded on the vertical central layer 4 placed, cord fabric one faces up, central layer 4 shape and bladder shape to be prepared match, to the bedding casing play 3 of rubber inner layer 1 last layer layer, wherein the odd-level of casing play is contrary with the cord incline direction of even level cord fabric, finally rubber outer 2 is laid on casing play 3, obtained air bag semiproduct;
3, presulfurization
Air bag semiproduct are laid in sulfurizing mould, between two sulfuration hot plates sulfurizing mould being delivered to vulcanizing press, carry out presulfurization, the temperature control that unit pressure between two sulfuration hot plates controls between 1.3-1.7MPa, sulfuration hot plate is controlled at 90-120 degree Celsius, presulfurization 10-15 minute;
The length of described sulfurizing mould, width are all than length, width many 20-30 millimeter of air bag.
4, sulfuration
To be loaded with the half-finished sulfurizing mould of air bag to take out in vulcanizing press, and deliver in vulcanizing press and carry out sulfuration, the Stress control in vulcanizing press is at 0.5-1.5MPa, temperature 145-155 degree Celsius, and cure time is determined according to the casing play number of plies;
Air bag semiproduct are taken out in sulfurizing mould, extracts central layer 4 out, obtain checkdam air bag;
5, air bag finishing
The defect that balloon surface exists is repaired;
6, tightness, withstand voltage test
Air bag is installed in experimental basis, by rushing stack, the pressure in air bag is flushed to 0.07MPa, pressurize 10-14 hour, then the pressure in air bag is checked, if be not less than 0.07 MPa, it is tentatively qualified to be, then by charge and exhaust pipe, the pressure in air bag is charged to 0.26-0.30MPa, pressurize 22-26 hour, if air bag crack-free phenomenon be completely qualified.
Checkdam air bag of the present invention, by technique and technological innovation, achieves the batch production of product,
Have employed pre-vulcanization process before air bag sulfuration, thus discharged between casing play fully, casing play and
Gas between rubber inner layer, rubber outer, between the compactness that ensure that sulfuration belt body and casing play
Good cementability.Fully can ensure product quality, disposable qualification rate reaches 100%, has good
Technology stability, the air bag made by this kind of technique, through destructive test, can resistance to more than 0.5Mpa pressure, air bag has longer application life, estimates that normal service life can reach 40-50.Far above the 10-15 application life of ordinary rubber dam, have broad application prospects.
Accompanying drawing explanation
Fig. 1: the structural representation of checkdam air bag of the present invention;
Fig. 2: the Pareto diagram of the radix layer cord of casing play;
Fig. 3: the Pareto diagram of the even level cord of casing play;
Fig. 4: the structural representation of presulfurization mould;
Fig. 5: the structural representation of experimental basis;
Fig. 6: the structural representation of central layer;
The A-A of Fig. 7: Fig. 6 cuts open structural representation;
The B-B of Fig. 8: Fig. 6 cuts open structural representation.
Detailed description of the invention
Provide the specific embodiment of the present invention below with reference to accompanying drawing, be used for doing further the present invention
Explanation.
Embodiment 1
A kind of checkdam air bag of the present embodiment, comprise rubber inner layer 1, rubber outer 2, the two is 3 millimeters thick, therebetween casing play 3 is folded with, three to be combined as a whole structure by sulfurization technology, casing play 3 is 8 layers, every layer of casing play 3 comprises cord fabric and rubber layer, cord fabric and rubber layer are fitted tightly by calendering technology and are integrated, form one deck casing play 3, odd-level is contrary with cord 5 angle of inclination of even level cord fabric, and the angle of inclination of cord is 50 degree, and cord fabric is terylene cord fabric.
The vulcanizing press sulfuration processing method of a kind of checkdam air bag of the present embodiment, to make height of dam 2 meters of checkdam open type air bags, long 4.8 meters of air bag, wide 2.1 meters, processing technology is as follows:
1, the raw material making air bag are prepared
1. by repressed for the mixing of rubber of ethylene propylene diene rubber, natural rubber, butadiene-styrene rubber, neoprene shaping rear obtained rubber inner layer 1, rubber outer 2;
2. calculated by design formulas and determine that the intensity of cord fabric is 260KN/m;
3. be prepared to core plate 4: central layer 4 is metal material, and shape is rectangle, the edge of central layer is circle
Arc (see figure 6),
4. the long 4770mm of central layer, wide 2070mm, thickness is 8mm.
5. sulfurizing mould is prepared: sulfurizing mould structure is as Fig. 4, and material is metal material, and wherein A is
4820mm, B are 2120mm;
2, rubberizing is rolled
Get one deck cord fabric, at its calendered rubber layer, rubber layer and cord fabric are combined as a whole, form rubber inner layer 1, rubber outer 2, casing play 3 are in like manner formed;
3, shaping
1. be bedded in by rubber inner layer 1 on the vertical central layer 4 placed, cord fabric one faces up;
2. to the bedding casing play 3 of rubber inner layer 1 last layer layer, every layer of equal slant setting of casing play, makes the angle of inclination of cord be 50 degree, and wherein the odd-level of casing play is contrary with the cord incline direction of even level cord fabric, finally rubber outer 2 is laid on casing play 3, obtained air bag semiproduct;
4, pre-vulcanization process:
1. air bag semiproduct are put in sulfurizing mould;
2. air bag semiproduct are laid in sulfurizing mould, between two sulfuration hot plates sulfurizing mould being delivered to vulcanizing press, carry out presulfurization, the temperature control that unit pressure between two sulfuration hot plates controls between 1.3-1.7MPa, sulfuration hot plate is controlled at 90-120 degree Celsius, presulfurization 10-15 minute;
3., after first time presulfurization, inspection finishing is carried out to air bag surface of semi-finished.
5, sulfidation:
Cure time formulae discovery:
Cure time=(rubber inner layer thickness+rubber outer thickness) the * 2+ casing play number of plies+(20-30 minute); (rubber inner layer thickness, rubber outer thickness are millimeter unit, cure time be minute unit)
1. run vulcanizing press and sulfuration is carried out to air bag semiproduct;
2. conditions of vulcanization: unit pressure 1Mpa, temperature 145-155 DEG C, cure time 50 minutes;
3. sulfuration complete after operate tablet vulcanizer by mould and air bag semiproduct between vulcanizing press
Take out;
4. air bag semiproduct are taken out in sulfurizing mould, extract central layer 4 out, obtain checkdam air bag.
The present embodiment adopts the bag width of vulcanizing press sulfuration processing can reach 5 meters, and the vulcanisation step in vulcanizing press sulfuration processing method of the present invention adopts the sulfurizing pot vulcanization processing bag width that then its sulfuration is processed to be merely able to reach 3.5 meters.
Embodiment 2
The difference of the present embodiment and embodiment 1 is: further comprising the steps of in the processing method of checkdam air bag:
6, air bag finishing:
1. air bag semiproduct are taken out in mould, then central layer 4 is taken out from air bag opening side;
2. carry out presentation quality inspection to air bag, as found, surface blemishes needs to repair;
6, tightness, withstand voltage test is carried out.
1., air bag will be installed in experimental basis by shown in Fig. 5;
2., air tight test is carried out: by charge and exhaust pipe, the pressure in air bag is charged to 0.07Mpa, and pressurize 12 hours, check after 12 hours that the pressure in air bag is not less than 0.07 Mpa, it is tentatively qualified to be;
3., withstand voltage test is carried out:
By charge and exhaust pipe, the pressure in air bag is charged to 0.28Mpa, and pressurize 24 hours, after 24 hours, dam bag crack-free phenomenon is completely qualified.
Experimental basis comprises basic table top 6, basic table top 6 is provided with air bag anchoring piece 7 for fixing scuta 9 and air bag 8, spacing belt 10 is installed between scuta 9 and basic platform 6, spacing belt is fixed anchor by spacing belt and is fixed on basic platform 6, and air bag 8 is also connected with the charge and exhaust pipe 11 for inflating to it;
1, scuta: be the rigid materials such as metal, for dash, can reach by lifting the object controlling water retaining height;
2, air bag anchoring piece: be metal material, closing for fixation balloon and air bag;
3, basic table top: for laying a whole set of checkdam system;
4, stack is rushed: charge, exhaust in air bag;
5, spacing belt anchoring piece: for fixing spacing belt;
6, spacing belt: for limiting the maximum height that scuta rises;
7, air bag: be made up of rubber and high strength cord, by charge, exhaust and then the lifting controlling scuta.
The present invention has following good effect:
1. by technique and technological innovation, the batch production of product is achieved.
2. the sulfuration of cell edges casing play is fixed to circular arc, and the casing play that air bag fills edge when rising can freely launch, uniform force, and air bag bulk strength is better;
3. have employed pre-vulcanization process before air bag sulfuration, unit pressure during presulfurization on air bag reaches
1.3-1.7Mpa, discharges the gas between casing play, between casing play and rubber cover, ensure that cementability good between the compactness of sulfuration belt body and casing play.Fully can ensure product quality: disposable qualification rate reaches 100%, there is good technology stability;
4. because air bag adopts disposable sulfuration to make, seamless seamless on air bag, unstressed concentrated weak spot.Make whole checkdam system safer;
5. adopt this kind of technique to make air bag, may be used for building the checkdam system that water retaining height reaches 10 meters
System;
6. by the air bag that this kind of technique makes, through destructive test, can resistance to more than 0.5Mpa pressure, air bag has longer application life.Estimate that normal service life can reach 40-50.Far above the 10-15 application life of ordinary rubber dam.
The above is the present invention's preferably detailed description of the invention; but protection scope of the present invention is not limited thereto, the change that any those skilled in the art of being familiar with can expect easily in the technical scope that the present invention discloses and substitute all should be encompassed within protection scope of the present invention.
Claims (5)
1. the vulcanizing press sulfuration processing method of a checkdam air bag, checkdam air bag comprises rubber inner layer (1), rubber outer (2), therebetween casing play (3) is folded with, three to be combined as a whole structure by sulfurization technology, rubber inner layer (1), rubber outer (2) comprises cord fabric and rubber layer, cord fabric and rubber layer are fitted tightly by calendering technology and are formed as one, casing play (3) is 2-10 layer, every layer of casing play (3) comprises cord fabric and rubber layer, cord fabric and rubber layer are fitted tightly by calendering technology and are integrated, form one deck casing play (3), odd-level is contrary with cord (5) angle of inclination of even level cord fabric, the angle of inclination of cord (5) is 40-60 degree, cord fabric is terylene cord fabric or polyamide cord fabric, it is characterized in that comprising following technological process:
1), rubberizing is rolled
Get one deck cord fabric, at its calendered rubber layer, rubber layer and cord fabric are combined as a whole, form rubber inner layer (1), rubber outer (2), casing play (3) are in like manner formed;
2), shaping
Rubber inner layer (1) is bedded on the vertical central layer (4) placed, cord fabric one faces up, central layer (4) shape and bladder shape to be prepared match, to the bedding casing play (3) of rubber inner layer (1) last layer layer, wherein the odd-level of casing play is contrary with the cord incline direction of even level cord fabric, finally rubber outer (2) is laid on casing play (3), obtained air bag semiproduct;
3), presulfurization
Air bag semiproduct are laid in sulfurizing mould, between two sulfuration hot plates sulfurizing mould being delivered to vulcanizing press, carry out presulfurization, the temperature control that unit pressure between two sulfuration hot plates controls between 1.3-1.7MPa, sulfuration hot plate is controlled at 90-120 degree Celsius, presulfurization 10-15 minute;
4), sulfuration
Take out being loaded with the half-finished sulfurizing mould of air bag between two sulfuration hot plates of vulcanizing press, deliver in vulcanizing press and carry out sulfuration, Stress control in vulcanizing press is at 0.5-1.5MPa, temperature 145-155 degree Celsius, and cure time is determined according to the casing play number of plies;
Air bag semiproduct are taken out in sulfurizing mould, extracts central layer (4) out, obtain checkdam air bag.
2., according to the vulcanizing press sulfuration processing method of a kind of checkdam air bag according to claim 1, characterized by further comprising following technological process:
5), air bag finishing
The defect that balloon surface exists is repaired.
3., according to the vulcanizing press sulfuration processing method of a kind of checkdam air bag according to claim 1, characterized by further comprising following technological process:
6), tightness, withstand voltage test
Air bag is installed in experimental basis, by charge and exhaust pipe, the pressure in air bag is flushed to 0.07MPa, pressurize 10-14 hour, then the pressure in air bag is checked, if be not less than 0.07 MPa, it is tentatively qualified to be, then by charge and exhaust pipe, the pressure in air bag is charged to 0.26-0.30MPa, pressurize 22-26 hour, if air bag crack-free phenomenon be completely qualified.
4., according to the vulcanizing press sulfuration processing method of a kind of checkdam air bag according to claim 1, it is characterized in that the length of described sulfurizing mould, width respectively than length, width many 20-30 millimeter of air bag.
5. according to the vulcanizing press sulfuration processing method of a kind of checkdam air bag according to claim 3, it is characterized in that described experimental basis comprises basic table top (6), basic table top (6) is provided with air bag anchoring piece (7) for fixing scuta (9) and air bag (8), spacing belt (10) is installed between scuta (9) and basic platform (6), spacing belt is fixed anchor (12) by spacing belt and is fixed on basic platform (6), and air bag (8) is also connected with the charge and exhaust pipe (11) for inflating to it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210110046.XA CN102628260B (en) | 2012-04-16 | 2012-04-16 | A kind of vulcanizing press sulfuration processing method of checkdam air bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210110046.XA CN102628260B (en) | 2012-04-16 | 2012-04-16 | A kind of vulcanizing press sulfuration processing method of checkdam air bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102628260A CN102628260A (en) | 2012-08-08 |
| CN102628260B true CN102628260B (en) | 2015-07-29 |
Family
ID=46586639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210110046.XA Active CN102628260B (en) | 2012-04-16 | 2012-04-16 | A kind of vulcanizing press sulfuration processing method of checkdam air bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102628260B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104908347B (en) * | 2015-06-07 | 2017-09-01 | 青岛吉尔工程橡胶有限公司 | A kind of manufacture method of the high-pressure gasbag of use vulcanizing press temperature-pressure vulcanization |
| CN107761672B (en) * | 2017-11-16 | 2023-11-17 | 江苏扬州合力橡胶制品有限公司 | Air bag for air shield dam and processing technology thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58181911A (en) * | 1982-04-16 | 1983-10-24 | Bridgestone Corp | Repairing of flexible film dam |
| US5713699A (en) * | 1992-03-02 | 1998-02-03 | Obermeyer; Henry K. | Spillway crest gate system and inflatable bladder therefor |
| JP2003261922A (en) * | 2002-03-12 | 2003-09-19 | Yokohama Rubber Co Ltd:The | Manufacturing method for rubber weir |
| JP3839004B2 (en) * | 2003-08-06 | 2006-11-01 | バンドー化学株式会社 | Rubber bag and manufacturing method thereof |
| CN201151899Y (en) * | 2007-12-26 | 2008-11-19 | 衡水佳兴工程橡胶有限公司 | Rubber dam bag body |
| CN101691743A (en) * | 2009-08-15 | 2010-04-07 | 烟台桑尼橡胶有限公司 | Dam bag of rubber dam and processing technology thereof |
| CN101817957A (en) * | 2010-04-09 | 2010-09-01 | 北京化工大学 | Low-lag microcellular rubber material for oscillation reduction of high-speed railway fastener and preparation method thereof |
| CN102086637A (en) * | 2010-12-16 | 2011-06-08 | 铁岭尔凡橡塑研发有限公司 | Large high-pressure seamless rubber airbag and production process thereof |
| CN102268864A (en) * | 2011-05-21 | 2011-12-07 | 侯作启 | Air dam valve |
| CN102619193A (en) * | 2012-04-16 | 2012-08-01 | 烟台桑尼橡胶有限公司 | Dam blocking air bag and vulcanizing boiler vulcanization processing method thereof |
| CN202509447U (en) * | 2012-04-16 | 2012-10-31 | 烟台桑尼橡胶有限公司 | Retaining dam air bag |
-
2012
- 2012-04-16 CN CN201210110046.XA patent/CN102628260B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58181911A (en) * | 1982-04-16 | 1983-10-24 | Bridgestone Corp | Repairing of flexible film dam |
| US5713699A (en) * | 1992-03-02 | 1998-02-03 | Obermeyer; Henry K. | Spillway crest gate system and inflatable bladder therefor |
| JP2003261922A (en) * | 2002-03-12 | 2003-09-19 | Yokohama Rubber Co Ltd:The | Manufacturing method for rubber weir |
| JP3839004B2 (en) * | 2003-08-06 | 2006-11-01 | バンドー化学株式会社 | Rubber bag and manufacturing method thereof |
| CN201151899Y (en) * | 2007-12-26 | 2008-11-19 | 衡水佳兴工程橡胶有限公司 | Rubber dam bag body |
| CN101691743A (en) * | 2009-08-15 | 2010-04-07 | 烟台桑尼橡胶有限公司 | Dam bag of rubber dam and processing technology thereof |
| CN101817957A (en) * | 2010-04-09 | 2010-09-01 | 北京化工大学 | Low-lag microcellular rubber material for oscillation reduction of high-speed railway fastener and preparation method thereof |
| CN102086637A (en) * | 2010-12-16 | 2011-06-08 | 铁岭尔凡橡塑研发有限公司 | Large high-pressure seamless rubber airbag and production process thereof |
| CN102268864A (en) * | 2011-05-21 | 2011-12-07 | 侯作启 | Air dam valve |
| CN102619193A (en) * | 2012-04-16 | 2012-08-01 | 烟台桑尼橡胶有限公司 | Dam blocking air bag and vulcanizing boiler vulcanization processing method thereof |
| CN202509447U (en) * | 2012-04-16 | 2012-10-31 | 烟台桑尼橡胶有限公司 | Retaining dam air bag |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102628260A (en) | 2012-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102619193A (en) | Dam blocking air bag and vulcanizing boiler vulcanization processing method thereof | |
| CN202509447U (en) | Retaining dam air bag | |
| US9669589B2 (en) | Hybrid solid-inflatable mandrel for blade manufacturing | |
| CN102628260B (en) | A kind of vulcanizing press sulfuration processing method of checkdam air bag | |
| CN104908347B (en) | A kind of manufacture method of the high-pressure gasbag of use vulcanizing press temperature-pressure vulcanization | |
| JP4923213B2 (en) | Method for penetration repair of a composite structure with three skins and two core layers | |
| US20130209601A1 (en) | Processes and systems for manufacturing spars and other hollow structures | |
| CN103465483B (en) | A kind of repair technology of high-speed coach radial | |
| CN111117002B (en) | Preparation method of tire turn-up bladder | |
| CN102747710A (en) | Production process for manufacturing rubber dam bags by using polyester fabric as framework material | |
| CN102092400A (en) | Shaft spring for railway vehicle and producing method thereof | |
| CN102504376B (en) | Sub-high temperature vulcanized solid sound-transmitting rubber and preparation method thereof | |
| CN204059404U (en) | A kind of type inflatable GINA rubber fastening band | |
| CN103613794A (en) | Aircraft tire buffer rubber containing resorcinol-formaldehyde adhesion system | |
| CN106193072B (en) | Sealing capsule and its manufacturing method | |
| CN109880187B (en) | Impact-resistant, wear-resistant and tear-resistant steel wire rope core conveying belt and preparation method thereof | |
| CN105881937B (en) | Whole double-layer air bag and its manufacturing method for composite molding | |
| CN108916388B (en) | U-shaped rubber sealing air bag and processing technology thereof | |
| CN103758212B (en) | A kind of steel plate/polyurethane laminated shock isolating pedestal and preparation method thereof | |
| CN106215388A (en) | A kind of novel solid sticky ball and processing technology thereof | |
| CN101966800B (en) | Bulletproof safety tire | |
| CN102114709B (en) | Production process for rubber diaphragm of IC intelligent instrument closed chamber | |
| CN102896717B (en) | Air bag cluster Vulcaizing machine for repairing auto tire and sulfuration process | |
| CN107761672B (en) | Air bag for air shield dam and processing technology thereof | |
| CN103192469A (en) | Inner tire vulcanization process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Hong Zhiqiang Inventor after: Li Huixiao Inventor after: Yang Xiaodong Inventor after: Ji Zhenya Inventor after: Chang Fu Inventor after: Geng Changxing Inventor before: Hong Zhiqiang Inventor before: Li Huixiao Inventor before: Yang Xiaodong |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170706 Address after: Songshan District Economic Development Zone C Qixia city 265300 Shandong city of Yantai Province Co-patentee after: Changchun Machinery Institute, Ministry of Water Resource Patentee after: Sunny Rubber Yantai Co., Ltd. Address before: Songshan District Economic Development Zone C Qixia city 265300 Shandong city of Yantai Province Patentee before: Sunny Rubber Yantai Co., Ltd. |