CN112409684A - Processing method of high-strength toy plastic - Google Patents

Processing method of high-strength toy plastic Download PDF

Info

Publication number
CN112409684A
CN112409684A CN202011207820.XA CN202011207820A CN112409684A CN 112409684 A CN112409684 A CN 112409684A CN 202011207820 A CN202011207820 A CN 202011207820A CN 112409684 A CN112409684 A CN 112409684A
Authority
CN
China
Prior art keywords
phase
mixture
polypropylene
mass
auxiliary material
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
Application number
CN202011207820.XA
Other languages
Chinese (zh)
Inventor
牛承武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linyi Lifang Plastic Cement Products Co ltd
Original Assignee
Linyi Lifang Plastic Cement Products Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Linyi Lifang Plastic Cement Products Co ltd filed Critical Linyi Lifang Plastic Cement Products Co ltd
Priority to CN202011207820.XA priority Critical patent/CN112409684A/en
Publication of CN112409684A publication Critical patent/CN112409684A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/30Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10Homopolymers or copolymers of propene
    • C08J2323/12Polypropene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2491/00Characterised by the use of oils, fats or waxes; Derivatives thereof
    • C08J2491/06Waxes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02Organic and inorganic ingredients
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/30Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045Sulfates
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/32Phosphorus-containing compounds
    • C08K2003/321Phosphates
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/34Silicon-containing compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/36Sulfur-, selenium-, or tellurium-containing compounds
    • C08K5/41Compounds containing sulfur bound to oxygen
    • C08K5/42Sulfonic acids; Derivatives thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a processing method of high-strength toy plastic, which comprises the following steps: firstly, adding polypropylene, sodium alkyl benzene sulfonate and water into a stirrer, uniformly mixing and stirring to obtain an A-phase mixture, then adding paraffin oil into the A-phase mixture, and then adding a C-phase auxiliary material, wherein the C-phase auxiliary material comprises an anionic surfactant, a nonionic surfactant, high-efficiency whitening and stain removing ions, a buffering agent and spice; then adding phosphate, silicate, anhydrous sodium sulphate and enzyme to obtain an E-phase mixture; and finally, putting the mixture into an injection molding machine for high-temperature high-pressure melting extrusion molding to obtain the high-performance plastic. Through adding C looks auxiliary material in the processing material, can promote plastics material's foaming effect and sclerosis effect simultaneously, not only can reduce plastics product's density, reduce the weight of product, can promote plastics product's hardness moreover, promote the intensity of product, be favorable to prolonging the life of product.

Description

Processing method of high-strength toy plastic
Technical Field
The invention belongs to the technical field of high-performance plastic preparation, and particularly relates to a processing method of high-strength toy plastic.
Background
In the processing process of the plastic product, the hardness of the plastic product with good foaming effect is generally lower, and the foaming effect of the plastic product with high strength and high hardness is generally poorer in the foaming process, so that the density of the product is higher, the foaming effect and the hardness can not be taken into consideration, and the plastic product can not meet the material requirement of the existing high-performance toy.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for processing a high-strength toy plastic, which can be used by a high-performance plastic processor to process high-performance plastic products having a low density and a high hardness, and can be widely applied to the fields of high-end toy manufacturing, consumer goods processing, and the like.
The processing technology of the high-performance plastic comprises the following steps:
s1, polypropylene, sodium alkyl benzene sulfonate and water in a mass ratio of 250: (0.8-1.2): (0.8-1.2) adding the mixture into a stirrer, and uniformly mixing and stirring to obtain an A-phase mixture;
s2, adding paraffin oil into the phase A mixture, and uniformly stirring to obtain a phase B mixture, wherein the mass of the paraffin oil is 0.01-0.02 times of that of the polypropylene;
s3, adding a C-phase auxiliary material into the B-phase mixture to obtain a D-phase mixture, wherein the mass of the C-phase auxiliary material is 0.02-0.04 times that of the polypropylene, and the C-phase auxiliary material comprises an anionic surfactant, a nonionic surfactant, high-efficiency whitening and stain removing ions, a buffering agent and a spice;
s4, adding phosphate, silicate, anhydrous sodium sulphate and enzyme into the D-phase mixture to obtain an E-phase mixture;
s5, putting the E-phase mixture into an injection molding machine, and performing high-temperature high-pressure melt extrusion molding to obtain the high-performance plastic, wherein the working temperature of the injection molding machine is 185-250 ℃, and the pressure is 12-14 MPa.
According to some specific embodiments of the present invention, in the step S1, the polypropylene, the sodium alkyl benzene sulfonate and the water are mixed in a mass ratio of 250: 1: 1.
according to some embodiments of the invention, in the step S2, the paraffin oil has a mass of 0.015 times that of the polypropylene.
According to some embodiments of the present invention, in step S3, the mass of the phase C auxiliary material is 0.03 times of the mass of the polypropylene.
According to some embodiments of the present invention, in step S5, the injection molding machine is operated at 220 ℃ and 13 MPa.
According to the processing technology of the high-performance plastic disclosed by the embodiment of the invention, the anionic surfactant, the nonionic surfactant, the high-efficiency whitening and stain removing ions, the buffering agent and the spice are added into the processing material, so that the foaming effect and the hardening effect of the plastic material can be simultaneously improved, the density of the plastic product can be reduced, the weight of the product can be reduced, the hardness of the plastic product can be improved, the strength of the product is improved, and the service life of the product can be prolonged.
Drawings
FIG. 1 is a flow chart of a process for processing high performance plastics according to an embodiment 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.
The processing of high performance plastics according to an embodiment of the invention is described below with reference to fig. 1, comprising the following steps:
s1, polypropylene, sodium alkyl benzene sulfonate and water in a mass ratio of 250: (0.8-1.2): (0.8-1.2) adding the mixture into a stirrer, and uniformly mixing and stirring to obtain an A-phase mixture;
s2, adding paraffin oil into the phase A mixture, and uniformly stirring to obtain a phase B mixture, wherein the mass of the paraffin oil is 0.01-0.02 times of that of the polypropylene;
s3, adding a C-phase auxiliary material into the B-phase mixture to obtain a D-phase mixture, wherein the mass of the C-phase auxiliary material is 0.02-0.04 times that of the polypropylene, and the C-phase auxiliary material comprises an anionic surfactant, a nonionic surfactant, high-efficiency whitening and stain removing ions, a buffering agent and a spice;
s4, adding phosphate, silicate, anhydrous sodium sulphate and enzyme into the D-phase mixture to obtain an E-phase mixture;
s5, putting the E-phase mixture into an injection molding machine, and performing high-temperature high-pressure melt extrusion molding to obtain the high-performance plastic, wherein the working temperature of the injection molding machine is 185-250 ℃, and the pressure is 12-14 MPa.
According to the processing technology of the high-performance plastic disclosed by the embodiment of the invention, the anionic surfactant, the nonionic surfactant, the high-efficiency whitening and stain removing ions, the buffering agent and the spice are added into the processing material, so that the foaming effect and the hardening effect of the plastic material can be simultaneously improved, the density of the plastic product can be reduced, the weight of the product can be reduced, the hardness of the plastic product can be improved, the strength of the product can be improved, the service life of the product can be prolonged, and the processing technology can be widely applied to the fields of high-end toy manufacturing, living goods processing and the like.
According to some specific embodiments of the present invention, in the step S1, the polypropylene, the sodium alkyl benzene sulfonate and the water are mixed in a mass ratio of 250: 1: 1, the proportion is convenient for material preparation, and the produced plastic product has better quality.
According to some embodiments of the present invention, in the step S2, the mass of the paraffin oil is 0.015 times of the mass of the polypropylene, and the addition of the paraffin oil 0.015 times of the mass of the polypropylene can ensure that various active agents and ions in the phase C auxiliary material are bonded to the foamed main material, thereby improving the foaming effect and the hardening effect of the plastic.
According to some embodiments of the present invention, in step S3, the mass of the phase C auxiliary material is 0.03 times that of the polypropylene, and the addition of the phase C auxiliary material in an amount 0.03 times that of the polypropylene can improve the performance of the melted material to the greatest extent, so as to improve the quality of the product after extrusion molding.
According to some embodiments of the present invention, in step S5, the operating temperature of the injection molding machine is 220 ℃, the pressure is 13MPa, the operating temperature of the injection molding machine is controlled to be about 220 ℃, and the pressure is controlled to be about 13MPa, so that the plastic ball product obtained by processing has the best performance, and the weight reduction and hardness of the plastic ball are optimized to the greatest extent.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (5)

1. A processing method of high-strength toy plastic is characterized by comprising the following steps:
s1, polypropylene, sodium alkyl benzene sulfonate and water in a mass ratio of 250: (0.8-1.2): (0.8-1.2) adding the mixture into a stirrer, and uniformly mixing and stirring to obtain an A-phase mixture;
s2, adding paraffin oil into the phase A mixture, and uniformly stirring to obtain a phase B mixture, wherein the mass of the paraffin oil is 0.01-0.02 times of that of the polypropylene;
s3, adding a C-phase auxiliary material into the B-phase mixture to obtain a D-phase mixture, wherein the mass of the C-phase auxiliary material is 0.02-0.04 times that of the polypropylene, and the C-phase auxiliary material comprises an anionic surfactant, a nonionic surfactant, high-efficiency whitening and stain removing ions, a buffering agent and a spice;
s4, adding phosphate, silicate, anhydrous sodium sulphate and enzyme into the D-phase mixture to obtain an E-phase mixture;
s5, putting the E-phase mixture into an injection molding machine, and performing high-temperature high-pressure melt extrusion molding to obtain the high-performance plastic, wherein the working temperature of the injection molding machine is 185-250 ℃, and the pressure is 12-14 MPa.
2. The method for processing high-strength toy plastic according to claim 1, wherein the method comprises the following steps: in the step S1, the polypropylene, the sodium alkyl benzene sulfonate and the water are mixed according to a mass ratio of 250: 1: 1.
3. the processing method of high-strength toy plastic according to claim 2, wherein the processing method comprises the following steps: in the step S2, the paraffin oil has a mass of 0.015 times the mass of the polypropylene.
4. A method for processing a high strength toy plastic according to claim 3, wherein: in step S3, the mass of the phase C auxiliary material is 0.03 times the mass of the polypropylene.
5. The processing method of high-strength toy plastic according to claim 4, wherein the processing method comprises the following steps: in the step S5, the operating temperature of the injection molding machine is 220 ℃ and the pressure is 13 MPa.
CN202011207820.XA 2020-11-03 2020-11-03 Processing method of high-strength toy plastic Pending CN112409684A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011207820.XA CN112409684A (en) 2020-11-03 2020-11-03 Processing method of high-strength toy plastic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011207820.XA CN112409684A (en) 2020-11-03 2020-11-03 Processing method of high-strength toy plastic

Publications (1)

Publication Number Publication Date
CN112409684A true CN112409684A (en) 2021-02-26

Family

ID=74828111

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011207820.XA Pending CN112409684A (en) 2020-11-03 2020-11-03 Processing method of high-strength toy plastic

Country Status (1)

Country Link
CN (1) CN112409684A (en)

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101104716A (en) * 2006-07-13 2008-01-16 中国石油化工股份有限公司 Expandable polypropylene beading, preparation method thereof, and its foaming beading and foaming molding products
CN102888052A (en) * 2011-07-19 2013-01-23 上海升广科技有限公司 Novel foaming formula of polypropylene plastic
CN103102583A (en) * 2011-11-11 2013-05-15 上海杰事杰新材料(集团)股份有限公司 Polypropylene microporous foam material and preparation method thereof
CN103265759A (en) * 2013-06-13 2013-08-28 苏州新区华士达工程塑胶有限公司 Polypropylene modified plastic
CN104292650A (en) * 2014-11-07 2015-01-21 合肥大安印刷有限责任公司 Low-odor plastic sheet used for children's toys
CN104448535A (en) * 2013-09-21 2015-03-25 青岛博研达工业技术研究所(普通合伙) Modified polypropylene material
CN105949561A (en) * 2016-04-29 2016-09-21 安徽巢湖南方膜业有限责任公司 Washing powder plastic packaging bag inner film
CN106432887A (en) * 2016-08-19 2017-02-22 刘苏芹 Polyolefin foaming masterbatch composition and preparation method and application
CN106957487A (en) * 2017-05-23 2017-07-18 东至县科创塑料制品有限公司 A kind of Anti-static PP plastics
CN106957484A (en) * 2017-04-11 2017-07-18 刘明新 A kind of high-impact RPP and preparation method thereof
CN107118398A (en) * 2017-04-20 2017-09-01 长荣玩具(东莞)有限公司 Degradable asepsis environment-protecting toy material and preparation method thereof
CN107474308A (en) * 2017-07-11 2017-12-15 武汉金发科技有限公司 A kind of micro-foaming polypropylene composite material and preparation method thereof
CN107573593A (en) * 2017-09-15 2018-01-12 张家港市大能塑料制品有限公司 A kind of manufacture craft of opalescent plastic particle
CN107641254A (en) * 2017-11-23 2018-01-30 马鞍山松鹤信息科技有限公司 A kind of environment-protecting and non-poisonous toy material and its preparation technology
CN110982181A (en) * 2019-12-09 2020-04-10 联泓(江苏)新材料研究院有限公司 Polypropylene composite material and preparation method and application thereof
CN111471235A (en) * 2020-03-18 2020-07-31 温州华邦安全封条股份有限公司 High-performance foamed polypropylene material and preparation method thereof
CN111499966A (en) * 2019-01-30 2020-08-07 明门瑞士股份有限公司 Polypropylene foamed material product and manufacturing method thereof

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101104716A (en) * 2006-07-13 2008-01-16 中国石油化工股份有限公司 Expandable polypropylene beading, preparation method thereof, and its foaming beading and foaming molding products
CN102888052A (en) * 2011-07-19 2013-01-23 上海升广科技有限公司 Novel foaming formula of polypropylene plastic
CN103102583A (en) * 2011-11-11 2013-05-15 上海杰事杰新材料(集团)股份有限公司 Polypropylene microporous foam material and preparation method thereof
CN103265759A (en) * 2013-06-13 2013-08-28 苏州新区华士达工程塑胶有限公司 Polypropylene modified plastic
CN104448535A (en) * 2013-09-21 2015-03-25 青岛博研达工业技术研究所(普通合伙) Modified polypropylene material
CN104292650A (en) * 2014-11-07 2015-01-21 合肥大安印刷有限责任公司 Low-odor plastic sheet used for children's toys
CN105949561A (en) * 2016-04-29 2016-09-21 安徽巢湖南方膜业有限责任公司 Washing powder plastic packaging bag inner film
CN106432887A (en) * 2016-08-19 2017-02-22 刘苏芹 Polyolefin foaming masterbatch composition and preparation method and application
CN106957484A (en) * 2017-04-11 2017-07-18 刘明新 A kind of high-impact RPP and preparation method thereof
CN107118398A (en) * 2017-04-20 2017-09-01 长荣玩具(东莞)有限公司 Degradable asepsis environment-protecting toy material and preparation method thereof
CN106957487A (en) * 2017-05-23 2017-07-18 东至县科创塑料制品有限公司 A kind of Anti-static PP plastics
CN107474308A (en) * 2017-07-11 2017-12-15 武汉金发科技有限公司 A kind of micro-foaming polypropylene composite material and preparation method thereof
CN107573593A (en) * 2017-09-15 2018-01-12 张家港市大能塑料制品有限公司 A kind of manufacture craft of opalescent plastic particle
CN107641254A (en) * 2017-11-23 2018-01-30 马鞍山松鹤信息科技有限公司 A kind of environment-protecting and non-poisonous toy material and its preparation technology
CN111499966A (en) * 2019-01-30 2020-08-07 明门瑞士股份有限公司 Polypropylene foamed material product and manufacturing method thereof
CN110982181A (en) * 2019-12-09 2020-04-10 联泓(江苏)新材料研究院有限公司 Polypropylene composite material and preparation method and application thereof
CN111471235A (en) * 2020-03-18 2020-07-31 温州华邦安全封条股份有限公司 High-performance foamed polypropylene material and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
中国毛纺织行业协会: "《毛纺织染整手册》", 31 August 2018, 中国纺织出版社 *
韩长日等: "《造纸用化学品生产工艺与技术》", 31 March 2018, 科学技术文献出版社 *

Similar Documents

Publication Publication Date Title
CN101798415A (en) Toughened and strengthened master batch
CN107502467A (en) A kind of transparent liquid detergent composition and preparation method with antiredeposition function
CN102964080A (en) Composite foaming agent for concrete
CN108358494A (en) A kind of liquid alkali-free quick-coagulant and preparation method thereof
CN102226224B (en) Slag grinding aid and preparation method thereof
CN112409684A (en) Processing method of high-strength toy plastic
CN116283040A (en) Foam concrete foaming agent and preparation method thereof
CN102173632B (en) Composite plastic-retaining grinding aid for cement and use method
CN101358161A (en) Novel energy-saving composite surface active agent post-match particle
CN106630727A (en) Alkali-resistance shielding foam agent
CN104087005A (en) PP-PE mixed wood plastic external-wall plate and production method thereof
CN110229442A (en) A kind of preparation method of organic metal salt high polymer composite material
CN113666653B (en) Method for preparing building material by utilizing magnesite tailings
CN102344263A (en) Novel process for producing mortar concrete waterproofing agent
CN104109339A (en) ABS (acrylonitrile-butadiene-styrene) plastic for air conditioner shells
CN105860234A (en) HDPE wood-plastic material and preparation method thereof
CN116855284B (en) Water-coal-slurry water reducer, preparation method of water-coal-slurry water reducer and water-coal-slurry
CN107721241A (en) Concrete foamer
CN110105752A (en) A kind of foaming modifying nylon composite materials and preparation method thereof
CN109161115A (en) A kind of compound pencil material of micro foam polystyrene
CN108948308A (en) A kind of formula and preparation method thereof of low resilience footwear material
CN1087148A (en) Huang, bluish dogbane bast softening agent and production method thereof
CN106866049A (en) A kind of manufacture craft of trashformation brick
CN114957940A (en) Preparation method and application of polylactic acid melt-blown material
CN104109338A (en) Antibacterial ABS (acrylonitrile butadiene styrene) plastic

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: 20210226

RJ01 Rejection of invention patent application after publication