CN112231843B - Method for establishing opening standard of tread extrusion die plate - Google Patents
Method for establishing opening standard of tread extrusion die plate Download PDFInfo
- Publication number
- CN112231843B CN112231843B CN202011170483.1A CN202011170483A CN112231843B CN 112231843 B CN112231843 B CN 112231843B CN 202011170483 A CN202011170483 A CN 202011170483A CN 112231843 B CN112231843 B CN 112231843B
- Authority
- CN
- China
- Prior art keywords
- tread
- opening
- rate
- shrinkage
- die
- 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
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000001125 extrusion Methods 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 47
- 150000001875 compounds Chemical class 0.000 claims description 13
- 230000008602 contraction Effects 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 2
- 238000012797 qualification Methods 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 7
- 239000003292 glue Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000004513 sizing Methods 0.000 description 4
- 239000011087 paperboard Substances 0.000 description 3
- 238000007573 shrinkage measurement Methods 0.000 description 2
- 101100136064 Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv) PE13 gene Proteins 0.000 description 1
- 101100029138 Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv) PE16 gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Optimization (AREA)
- Mathematical Analysis (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Computational Mathematics (AREA)
- Automation & Control Theory (AREA)
- Aviation & Aerospace Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Tyre Moulding (AREA)
Abstract
The invention discloses a method for establishing a tread extrusion die plate opening standard, which comprises the following steps: pre-establishing a relation curve between the shrinkage rate of the tread rubber material and the opening rate of the die plate; and measuring the shrinkage rate of the tread rubber material, obtaining the opening rate of the corresponding die plate according to a relation curve between the shrinkage rate of the tread rubber material and the opening rate of the die plate, and determining the width opening size of the die plate according to the opening rate of the die plate. The method for establishing the opening standard of the tire tread extrusion port plate can effectively improve the primary qualification rate of the opening of the tire tread extrusion port plate, reduce the amount of returned glue caused by a test plate, improve the trial production completion rate of a new product, improve the shrinkage condition of the tire tread after extrusion, improve the uniformity of the weight of the tire tread, effectively reduce the RFV mean value and further improve the comfort of the tire in the use process.
Description
Technical Field
The invention belongs to the field of rubber tire component generation, and particularly relates to a method for establishing a tire tread extrusion die plate opening standard.
Background
Tires are indispensable components for vehicles such as cars and trucks, and the performance of these vehicles is closely related to the characteristics of the tires. In the tire production process, each extrusion half part needs to be processed and produced corresponding to a single die plate, so that different die plates need to be designed.
At present, in a workshop tread extruding procedure, the yield of plate opening of a mouth-shaped plate is low, the primary yield is only 37%, and repeated mouth-shaped plate opening can cause the generation of a large amount of returned glue, so that the plate opening efficiency of the mouth-shaped plate is low, the stock of the returned glue is increased, and the trial production completion rate of new products is low. In addition, the opening rate of the mouth plate corresponds to that of all rubber materials, but the shrinkage rates of different rubber materials are different, so that the phenomenon that the extruded tire tread is not uniform in shrinkage in the use process is caused, the vertical fluctuation generated in the rotation of the tire is increased, the RFV mean value is increased, and the comfort of the tire in the use process is reduced.
Accordingly, further developments and improvements are still needed in the art.
Disclosure of Invention
In order to solve the above problems, a method for establishing a tire tread extrusion die opening standard is proposed to improve the first pass yield of the tire tread extrusion die opening, improve the shrinkage of the tire tread at the extrusion opening, improve the uniformity of the tire tread weight, and improve the comfort of the tire in the use process.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for establishing a tread extrusion die opening standard comprises the following steps:
s1, pre-establishing a relation curve between the shrinkage rate of a tread rubber material and the actual opening rate of a corresponding die plate;
s2, measuring the shrinkage rate of the tread rubber material and obtaining the opening rate of the corresponding die plate through the relation curve in the step S1;
and S3, determining the width opening size of the mouth plate according to the opening ratio of the mouth plate in the step S2.
Further, the plate width opening size = plate opening ratio standard size of glue component.
Further, the step S1 specifically includes the following steps: measuring the shrinkage rate of various tread rubber materials, respectively calculating the initial opening rate of the mouth-shaped plate corresponding to each tread rubber material, designing the corresponding mouth-shaped plate according to the initial opening rate of each mouth-shaped plate, actually debugging each mouth-shaped plate at an extrusion line to obtain the opening rate data of each mouth-shaped plate, and establishing a relation curve between the shrinkage rate of each tread rubber material and the opening rate of the corresponding mouth-shaped plate.
Further, the initial opening ratio of the die = 1-shrinkage of the tread compound.
Further, the shrinkage rate measuring process of the tread compound is as follows: and (3) open milling the tread rubber material on a calender to obtain a rubber sheet, cutting the rubber sheet with a fixed length, recording the initial length of the rubber sheet before contraction, placing the rubber sheet in talcum powder for 24 hours, measuring the length of the rubber sheet after contraction, and calculating the shrinkage rate of the tread rubber material according to the initial length of the rubber sheet and the length of the rubber material after contraction.
Further, the shrinkage rate of the tread compound = (initial length of film-length of film after shrinkage)/initial length of film.
Further, the initial opening ratio debugging process of the mouth plate is as follows: and (4) observing the extruded state of the tire tread by eyes and continuously adjusting the initial opening rate of the die plate until the tire tread does not droop or stretch on the linkage line, the tire tread is in contact with a roller shaft of the linkage line, and the linear speed of the tire tread is consistent with that of the linkage line.
Further, the corresponding relation curve between the shrinkage rate of each tread rubber material and the opening rate of each die plate is as follows: the aperture ratio of the die = a × + shrinkage of the tread compound + b, where a and b are constants.
Advantageous effects
The method for establishing the opening standard of the tire tread extrusion port plate can effectively improve the primary qualification rate of the opening of the tire tread extrusion port plate, reduce the amount of returned glue caused by a test plate, improve the trial production completion rate of a new product, improve the shrinkage condition of the tire tread after extrusion, improve the uniformity of the weight of the tire tread, effectively reduce the RFV mean value and further improve the comfort of the tire in the use process.
Drawings
Fig. 1 is a flowchart of a method for establishing a tread pressure outlet type plate opening standard according to embodiment 1 of the present invention;
FIG. 2 is a graph of shrinkage of each compound versus opening ratio of the corresponding die plate in specific example 1 of the present invention;
fig. 3 is a schematic diagram showing the standard dimensions of the adhesive member in embodiment 1 of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following description of the technical solutions of the present invention with reference to the accompanying drawings of the present invention is made clearly and completely, and other similar embodiments obtained by a person of ordinary skill in the art without any creative effort based on the embodiments in the present application shall fall within the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. mentioned in the following embodiments are directions with reference to the drawings only, and thus, the directional terms used are intended to illustrate rather than limit the inventive concept.
Detailed description of the preferred embodiment 1
A method of establishing a tread die opening criterion, as shown in fig. 1, comprising the steps of:
s1, a relation curve between the shrinkage rate of the tread rubber material and the opening rate of the corresponding die plate is established in advance.
Specifically, the shrinkage rates of various tread rubber materials are measured, the initial opening rate of the mouth plates corresponding to the tread rubber materials is calculated respectively, the corresponding mouth plates are designed according to the initial opening rates of the mouth plates, the mouth plates are actually debugged at an extrusion line to obtain the opening rate data of the mouth plates, and a relation curve between the shrinkage rate of each tread rubber material and the opening rate of the corresponding mouth plates is established.
Further, the initial die opening ratio = 1-shrinkage of the tread compound.
Further, the shrinkage measurement process of the tread compound is specifically as follows: a 200mm by 300mm sample of tread compound was open milled on a 10 inch calender for 2 minutes, with the spacing between the two rolls in the calender set to 2mm to obtain a 2mm thick film, and the calender was stopped after the film was obtained. And sticking a 50mm paper board with the thickness of 150mm on a compression roller, cutting the rubber sheet along the paper board by a rubber cutter, wherein the length of the paper board is the initial length of the rubber sheet before shrinkage of 150mm, placing the rubber sheet in a disc with talcum powder for 24 hours, measuring the length of the rubber sheet after shrinkage, and calculating the shrinkage rate of the tread rubber material according to the initial length of the rubber sheet and the length of the rubber material after shrinkage.
Further, the shrinkage rate of the tread rubber = (initial length of film-length of film after shrinkage)/initial length of film.
In this example, the shrinkage rate of the tread rubber = (150-film length after shrinkage)/150.
Further, the initial opening ratio debugging process of the mouth plate is specifically as follows: and (3) observing the extruded state of the tire tread by eyes and continuously adjusting the initial opening rate of the mouth-shaped plate, wherein the opening rate of the mouth-shaped plate when the tire tread does not droop or stretch on the linkage line, the tire tread is in contact with a roller shaft of the linkage line, and the linear velocity of the tire tread is consistent with the linear velocity of the linkage line is the final opening rate of the mouth-shaped plate.
Further, the corresponding relation curve between the shrinkage rate of each tread rubber material and the opening rate of each die plate is as follows: the aperture ratio of the die = a × + shrinkage of the tread compound + b, where a and b are constants. When the die is used, the shrinkage rate of the rubber material which is not produced or new rubber material is substituted into a formula, and the opening rate of the die plate corresponding to the rubber material is obtained.
Specifically, taking sizing materials PE95, PE17, PE02, PE13, PE08, PE99, PE04, PE07, P299, PE16, P299, P212, P815, PE28, P350, PE72 and P165 as examples, respectively measuring the shrinkage rate of the sizing materials and calculating the initial opening rate of the corresponding die plate, designing the corresponding die plate according to the initial opening rate of the die plate, then actually debugging each die plate at an extrusion line, visually inspecting the extruded state of the tire tread and continuously adjusting the initial opening rate of the die plate, when the tire tread does not droop or stretch on the linkage line and is just in contact with a roller shaft of the linkage line, and measuring the linear velocity of the tire tread by using a velocimeter to be consistent with the velocity of the linkage line, wherein the opening rate of the die plate at the moment is the opening rate of the actual die plate, and recording the opening rate of the die plate at the moment. The shrinkage rate of each rubber material and the opening ratio of the corresponding die plate are shown in table 1, the relationship curve of the shrinkage rate of each rubber material and the opening ratio of the corresponding die plate is shown in fig. 2, and a linear equation is derived according to the shrinkage rate of each rubber material and the opening ratio of the corresponding die plate: y = -0.5213x +1.0117, wherein y is the opening rate of the mouth plate, and x is the shrinkage rate of the sizing material.
TABLE 1 data sheet of shrinkage of each gum material and opening ratio of corresponding die plate
And S2, measuring the shrinkage rate of the tread rubber material and obtaining the opening rate of the corresponding die plate through the relation curve in the step S1.
Taking AQTE95 rubber as an example, the shrinkage of the rubber is 17%, the aperture ratio of the die plate corresponding to the rubber without the method of the invention is 98.7%, and the aperture ratio of the die plate corresponding to the rubber after the improvement of the method of the invention is 85%.
And S3, determining the width opening size of the mouth plate according to the opening ratio of the mouth plate in the step S2.
Further, the plate width opening size = plate opening ratio standard size of the glue component.
Specifically, the standard size of the rubber part is the size of the square book. In this embodiment, the standard size of the rubber part is as shown in fig. 3, the data unit in fig. 3 is mm, the opening size of the corresponding mouth plate width can be calculated according to the opening ratio of the mouth plate and the standard size of the rubber part, and further the mouth shape of the corresponding mouth plate is adjusted, so that the qualification rate of the primary test plate of the mouth plate is improved, and the comparison between the qualification rates of the primary test plate of the mouth plate before and after the mouth shape is changed is shown in table 2.
Table 2 mouth mould plate one-time test qualification rate table
| First test plate qualification rate of mouth-shaped plate (%) | |
| Before the mouth shape is changed | 37 |
| After the mouth shape is changed | 87 |
As can be seen from Table 2, by developing a sizing material shrinkage measurement method, a mouth-shaped plate opening standard is established, and the primary qualified rate of a mouth-shaped test plate is improved by 50%.
Taking the tread specifications of BT10376, BT10239, BT04874 and BT05910 as examples, the opening size of the die width is reset by the establishing method of the invention, and the RFV data before die change and after die change are compared with each other and shown in table 3.
TABLE 3 comparison table of RFV data before and after die change for each tread specification
As can be seen from Table 3, by developing a rubber material shrinkage rate measuring method, a linear relation between the tread rubber material shrinkage rate and the aperture ratio of the mouth plate is formed, data support is provided for the new specification opening ratio, the RFV of a finished tire is obviously reduced through the adjustment of the aperture ratio of the mouth plate, and the comfort of the tire in the using process is improved.
The invention is particularly suitable for the die plate opening of the extrusion die plate of the semi-steel radial tire tread, the rubber material shrinkage data is measured, the opening rate is established for the die plate according to the tread rubber material shrinkage data, the prior uniform opening rate of all rubber materials is improved into the prior uniform opening rate established according to different tread rubber materials, so that the opening qualification rate of the die plate of the tread is higher, the extruded tread is more stable, and the weight is more uniform.
While the invention has been described in detail in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (4)
1. A method for establishing a tread extrusion die opening standard is characterized by comprising the following steps:
s1, pre-establishing a relation curve between the shrinkage rate of a tread rubber material and the opening rate of a corresponding die plate;
the relationship curve is: the aperture ratio of the die = a × + shrinkage of the tread compound + b, wherein a and b are constants;
s2, measuring the shrinkage rate of the tread rubber material and obtaining the opening rate of the corresponding die plate through the relation curve in the step S1;
s3, determining the width opening size of the mouth-shaped plate according to the opening ratio of the mouth-shaped plate in the step S2;
the specific process of step S1 is as follows: measuring the shrinkage rates of various tread rubber materials, respectively calculating the initial opening rate of the mouth-shaped plate corresponding to each tread rubber material, designing the corresponding mouth-shaped plate according to the initial opening rate of each mouth-shaped plate, actually debugging each mouth-shaped plate at an extrusion line to obtain the opening rate data of each mouth-shaped plate, and establishing a relation curve between the shrinkage rate of each tread rubber material and the opening rate of the corresponding mouth-shaped plate;
the initial opening ratio of the die plate = 1-shrinkage of the tread rubber compound;
the shrinkage rate measuring process of the tread rubber compound is as follows: and (3) open milling the tread rubber material on a calender to obtain a rubber sheet, cutting the rubber sheet with a fixed length, recording the initial length of the rubber sheet before contraction, placing the rubber sheet in talcum powder for 24 hours, measuring the length of the rubber sheet after contraction, and calculating the shrinkage rate of the tread rubber material according to the initial length of the rubber sheet and the length of the rubber material after contraction.
2. The method of establishing a tread die opening rule of claim 1, wherein the die width opening size = the opening ratio of the die plate + the rule size of the rubber component.
3. The method of establishing a tread die opening criterion of claim 1 wherein the shrinkage rate of the tread compound = (initial length of film-length of film after shrinkage)/initial length of film.
4. The method for establishing the tread die opening standard according to claim 1, wherein the initial opening ratio debugging process of the die is as follows: and (4) observing the extruded state of the tire tread by eye and adjusting the initial opening rate of the die plate until the tire tread does not droop or stretch on the linkage line, the tire tread is in contact with a linkage line roller shaft, and the linear speed of the tire tread is consistent with that of the linkage line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011170483.1A CN112231843B (en) | 2020-10-28 | 2020-10-28 | Method for establishing opening standard of tread extrusion die plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011170483.1A CN112231843B (en) | 2020-10-28 | 2020-10-28 | Method for establishing opening standard of tread extrusion die plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112231843A CN112231843A (en) | 2021-01-15 |
| CN112231843B true CN112231843B (en) | 2022-11-08 |
Family
ID=74110866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011170483.1A Active CN112231843B (en) | 2020-10-28 | 2020-10-28 | Method for establishing opening standard of tread extrusion die plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112231843B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114043704A (en) * | 2021-11-17 | 2022-02-15 | 赛轮集团股份有限公司 | Production process of solid tire bead ring positioning rubber sheet |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101160628A (en) * | 2005-04-13 | 2008-04-09 | 富士胶片株式会社 | Optical recording medium and manufacturing method thereof |
| CN102555675A (en) * | 2010-12-28 | 2012-07-11 | 横滨橡胶株式会社 | Pneumatic tire and method of manufacturing pneumatic tire |
| WO2017188298A1 (en) * | 2016-04-28 | 2017-11-02 | 株式会社ユポ・コーポレーション | Labeled resin molded article and method for manufacturing same |
| WO2018130194A1 (en) * | 2017-01-13 | 2018-07-19 | 杭州星庐科技有限公司 | Rubber composite, processing method, rubber products applying composite, and manufacturing method |
| CN109760350A (en) * | 2019-01-21 | 2019-05-17 | 宁夏神州轮胎有限公司 | A method of improving all-steel load-bearing radial tire dynamic balance performance |
| CN110083881A (en) * | 2019-04-02 | 2019-08-02 | 河北万达轮胎有限公司 | A kind of tire tread based on Excel and CAD platform goes out type die panel method for drafting |
| CN110228151A (en) * | 2019-05-29 | 2019-09-13 | 赛轮(东营)轮胎股份有限公司 | A kind of novel pressure outlet template develops sizing method |
-
2020
- 2020-10-28 CN CN202011170483.1A patent/CN112231843B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101160628A (en) * | 2005-04-13 | 2008-04-09 | 富士胶片株式会社 | Optical recording medium and manufacturing method thereof |
| CN102555675A (en) * | 2010-12-28 | 2012-07-11 | 横滨橡胶株式会社 | Pneumatic tire and method of manufacturing pneumatic tire |
| WO2017188298A1 (en) * | 2016-04-28 | 2017-11-02 | 株式会社ユポ・コーポレーション | Labeled resin molded article and method for manufacturing same |
| WO2018130194A1 (en) * | 2017-01-13 | 2018-07-19 | 杭州星庐科技有限公司 | Rubber composite, processing method, rubber products applying composite, and manufacturing method |
| CN109760350A (en) * | 2019-01-21 | 2019-05-17 | 宁夏神州轮胎有限公司 | A method of improving all-steel load-bearing radial tire dynamic balance performance |
| CN110083881A (en) * | 2019-04-02 | 2019-08-02 | 河北万达轮胎有限公司 | A kind of tire tread based on Excel and CAD platform goes out type die panel method for drafting |
| CN110228151A (en) * | 2019-05-29 | 2019-09-13 | 赛轮(东营)轮胎股份有限公司 | A kind of novel pressure outlet template develops sizing method |
Non-Patent Citations (2)
| Title |
|---|
| 《冬季轿车子午线轮胎的研发》;邓世涛等;《轮胎工业》;20131231;全文 * |
| 《大胎胎面排气装置》;彭森明;《橡塑技术与装备》;20051231;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112231843A (en) | 2021-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112231843B (en) | Method for establishing opening standard of tread extrusion die plate | |
| CN106696298B (en) | A kind of online hot press composite board material production equipment and its production technology | |
| US20120135191A1 (en) | Systems, Methods and Apparatuses for Direct Embossment of a Polymer Melt Sheet | |
| CA1139587A (en) | Method and apparatus for measuring the rheological properties of an extrudable material | |
| CN107877958B (en) | A kind of BOPET film and preparation method thereof of the no silane coupling agent of molding laser | |
| CN112917867A (en) | Preparation method of base film for release film of ceramic capacitor | |
| CN102879247B (en) | Method for manufacturing to-be-measured film for infrared analysis and method for measuring Fc, Ec and Et | |
| CN102794895A (en) | PVB (polyvinyl butyral) glass sandwich layer membrane sheet production line and operating method thereof | |
| CN105619745B (en) | The preparation method of the three-layer co-extruded multilayer packing membranes of FFS | |
| CN113670748B (en) | Test characterization method for fatigue initial-stage damage and development process of vulcanized rubber | |
| CN110228151B (en) | Method for designing development size of extrusion die | |
| KR100926298B1 (en) | Method and a apparatus of uniform thickness plastic sheet manufacturing | |
| WO2022001094A1 (en) | Method for guaranteeing fiber content stability in fiber-containing product | |
| CN103847116A (en) | Tire molding technology | |
| CN112557639A (en) | Method for testing transparency of PVC (polyvinyl chloride) resin | |
| CN111333971A (en) | PS gasket and preparation method thereof | |
| CN115157537A (en) | Intelligent correction method for die gap of foam plastic forming machine | |
| CN115816681A (en) | Preparation and forming method of special silicon rubber compensation sheet for drip irrigation | |
| CN110001168A (en) | A kind of antistatic carrier band and its manufacturing method | |
| JPH02194924A (en) | Thermoplastic resin film roll | |
| CN104788775B (en) | Protective film, base film and its manufacture method for Wafer Dicing film | |
| KR20240041048A (en) | Method and Apparatus for Neck-in prediction of polymer | |
| CN216941757U (en) | Bridge cut-off aluminium door and window multicavity formula central authorities joint strip forming die | |
| CN104325570A (en) | Method for rapidly characterizing silicone rubber compound storage life | |
| CN116973376A (en) | Evaluation method of LDPE optical protective film resin |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240328 Address after: 266000 Maoshan Road 588, Huangdao District, Qingdao City, Shandong Province Patentee after: Sailun Group Co.,Ltd. Country or region after: China Patentee after: Zhucheng Yong'an Rubber Technology Co.,Ltd. Address before: No. 43, Zhengzhou Road, North District, Qingdao, Shandong Patentee before: Sailun Group Co.,Ltd. Country or region before: China |