CN101085850A - Degradable water soluble packaging film - Google Patents

Degradable water soluble packaging film Download PDF

Info

Publication number
CN101085850A
CN101085850A CN 200610083699 CN200610083699A CN101085850A CN 101085850 A CN101085850 A CN 101085850A CN 200610083699 CN200610083699 CN 200610083699 CN 200610083699 A CN200610083699 A CN 200610083699A CN 101085850 A CN101085850 A CN 101085850A
Authority
CN
China
Prior art keywords
film
water
weight part
water soluble
soluble package
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.)
Granted
Application number
CN 200610083699
Other languages
Chinese (zh)
Other versions
CN101085850B (en
Inventor
许秀峰
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.)
Nuokang United Guangzhou Co ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN2006100836998A priority Critical patent/CN101085850B/en
Publication of CN101085850A publication Critical patent/CN101085850A/en
Application granted granted Critical
Publication of CN101085850B publication Critical patent/CN101085850B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Wrappers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

The invention provides a new degradable water- soluble packing membrane, which is a new green packimg material, and can be used to pack corrosive or toxic material. It employs water- soluble high molecular material as filming raw material, takes complex dispersing, plasticizing agent, softening agent, surface activator and antisticking agent as auxiliary material, and applies special filming process.

Description

A kind of degradable water soluble packaging film
Technical field
The present invention relates to a kind of degradable water soluble packaging film, is novel environmentally friendly packing material, can be used for the packing that chemical has materials such as corrodibility or toxic.Degradable water solvability packing film adopt can be in water rapidly the dissolved water-soluble high-molecular material as becoming membrane matrix, subsidiary material such as composite dispersing agent, softening agent, softening agent, tensio-active agent and antisticking agent are made by specific film-forming process.
Background technology
Before the present invention proposes, be used to have the container that various plastics, glass or metallic substance etc. are made that mostly is of corrodibility and toxic chemical substance packing.This class material is durable in use, uses back residual various corrodibility of depleted packing material and radioactive substance to be present in the environment, and environment is polluted, and is made his usefulness by people's mistake easily simultaneously, and humans and animals is damaged.
For these reasons; a kind of new packaging material that can pack chemical corrosivity and radioactive substance is proposed; this new packaging material not with the material generation chemical reaction of packaging; can prevent effectively that these materials from leaking and pollution; can in environment, disperse naturally after packing is used, disintegrate and degraded; and the final material that environment is safe from harm that in environment, becomes; to protection environment and human health and safety; embodiment is attached most importance to environment, and advanced society's theory that people-oriented has positive function and significance.
The present invention just is based on the formula combination and the making method of a kind of environment amenable safe new packaging material of above-mentioned requirements proposition.
Before the present invention proposed, existing abroad water-soluble film mainly adopted complete alcoholysis type polyvinyl alcohol or partial alcoholysis type polyvinyl alcohol as film forming material, and usually, its polymerization degree is between 1700-3000.This class water soluble package film, because film forming material is single, the inherent physico-chemical property of film forming material own makes its diaphragm that becomes that certain defective be arranged.These defect maps are present:
1, nearly all polyvinyl alcohol all has stronger water absorbability, especially when its during as the main film forming material of water-soluble film, add softening agent for example behind the glycerine according to film forming needs, more strengthened the water absorbability of polyvinyl alcohol, the moisture in its absorbing environmental can reach more than a times of quality own; When being used to pack, can produce film blocking and leakage phenomenon.
When 2, existing water-soluble film is dissolved in the water of normal temperature, can not promptly spread apart, form cotton-shaped heavy-gravity object and swim in the water,, can influence the degree of uniformity of pesticide spraying with this film packaging agricultural chemicals.
Though 3, existing employing polyvinyl alcohol is single film forming material water-soluble film has good gas-insulated property, and is all very high to the transmitance of ammonia and water vapor, can influence the stability of some packaged materials and active.
4, in the technology in the past, other adopt the film forming water-soluble film of single-material, have many defectives too, easily form bubble as Mierocrystalline cellulose diaphragm surface, and solubility property is bad fast; Starch diaphragm tensile strength is weak etc.
The degradable water soluble package film that the present invention proposes has overcome the defective of product in the past, has solved the above-mentioned problem of enumerating well.
Technology contents
The object of the invention is to provide a kind of good isolated property that has, and can replace common plastics, metal and glass packaging, and dispersing and dissolving fast in water can be degraded into the new packaging material of environmental sound material after the dissolving.
The present invention is combined with each other with one or more water-soluble high-molecular materials, as water soluble package film film forming substrate material, compound suitable manufacturing methods, softening agent, tensio-active agent, dispersion agent and antisticking agent are made film by special film-forming apparatus, and branch is cut to the size that is fit to automatic packing machine packing bag simultaneously, the rolling packing, standby.The water-soluble film that the present invention makes has overcome the defective of water-soluble film in the past.
The present invention is achieved through the following technical solutions:
Get: polyoxyethylene 100-400 weight part
Modified polyvinyl alcohol 100-400 weight part
Oleic acid triglyceride 20-60 weight part
Nonoxynolum 20-60 weight part
Cocamidopropyl betaine 20-200 weight part
Secondary alcohol reaction oxydase 1-10 weight part
Chitin 1-10 weight part
Microcrystalline Cellulose 1-20 weight part
Polyvinylpyrrolidone 20-120 weight part
Modified starch 20-120 weight part
Deionized water residuals weight part
Film forming component main separation polyoxyethylene and modified polyvinyl alcohol that the present invention selects for use, they as required the chemical property of packing material carry out proportioning in accordance with the appropriate ratio, its relative proportion scope is 1: 99-99: between 1, only ratio is 50: 50.Polyoxyethylene is the well-regulated macromolecular material that is dissolved in water fully of line style that is formed by epoxyethane ring-expansion polymerization, has good film-forming properties, the film softness, the thermoplasticity that are become are strong, be processed into bag, it is good to seal the heat seal performance, the more important thing is that polyoxyethylene does not absorb water substantially, use polyoxyethylene can guarantee the film that become not can produce, use and the preservation process in the moisture absorption adhesion phenomenon takes place.Modified polyvinyl alcohol is a kind of novel material that is used to make the polyvinyl alcohol of water-soluble film different from the past, carry out modification by adding starch hydrolyzates polysaccharide Propiram, make the polymerization degree of modified polyvinyl alcohol be lower than 600, thereby had the water-soluble and the dispersiveness that more are better than polyvinyl alcohol, can in water, not form flocculent substance, and the isolated property to all gases has improved twice, and ammonia and water vapour also can be effectively isolated in addition, enlarged the use range of water soluble package film.The pure and mild polyoxyethylene of modified poly ethylene can be miscible mutually preferably, two kinds of water-soluble high-molecular materials mix use in accordance with the appropriate ratio, leakage phenomenon can not stick together by the agent of low hygroscopicity assurance film of polyoxyethylene, guarantee the good heat seal of film, simultaneously modified polyvinyl alcohol can guarantee the organic solvent-resistant and the greasy performance of the film that become, and polyoxyethylene has also overcome the not defective of anti-amide solvent of polyvinyl alcohol.Polyoxyethylene and modified polyvinyl alcohol performance are complementary in the present invention.The pure and mild polyoxyethylene of modified poly ethylene mixes use, and the stability of polyoxyethylene is greatly improved.
The present invention selects for use the oleic acid triglyceride as softening agent, its effect is for flexibility that improves film and plasticity, why select the oleic acid triglyceride for use, be because the oleic acid triglyceride is good softening agent for the selected film forming material of the present invention, and do not have the strong water absorbability of glycerine.
The present invention selects for use nonoxynolum as the Film Fractionation dispersion agent.Nonoxynolum is a kind of nonionogenic tenside, and surface wettability is preferably arranged, and can when Film Fractionation it be spread apart rapidly in water, and it is cotton-shaped to prevent that film from forming.The consumption of nonoxynolum should be controlled in 3 percent, surpasses 3 percent, can produce certain foam.
The present invention selects for use cocamidopropyl betaine as tensio-active agent, this composition can be in film making processes, reduce the gelating soln surface tension, prevent that the shrinkage cavity phenomenon from appearring in film in solidification process, can ensure that film can more easily strip down smoothly simultaneously from the coated panel of film former, guarantee the film uniformity, there is not pore, equally, the consumption of tensio-active agent can not be too high, and usually usage quantity is not higher than 10.
The effect of the secondary alcohol oxidizing reaction enzyme that the present invention selects for use is, because secondary alcohol reacts oxidasic existence, can make film after using dissolving to enter environment, can the main chain of the pure and mild polyoxyethylene of modified poly ethylene be cut off, some extraordinary floras are degraded into film forming material the material of environmental sound in the cooperation environment, wherein, modified polyvinyl alcohol is degraded into carbonic acid gas and water, and polyoxyethylene is degraded into the dme and the water of environmental sound.
The present invention selects for use the effect of degradable water-soluble high-molecular material chitin to be to utilize chitin coating effect, in 1% lactic acid aqueous solution of 2% chitosan, add secondary alcohol reaction Bovinelactoperoxidase active substance, through stirring fast, chitosan and above-mentioned substance form oil-in-water structure, regulator solution is neutral alkali partially, chitosan is coating these protein-active materials and is flocculating, form microcapsule, make mentioned component at the making processes of film and product between effective service life, remain higher activity, fully improve its availability, bring into play its degraded promoter action fully, simultaneously, because the raising of the availability of active substance descends the cost of product significantly.
The present invention selects for use the effect of Microcrystalline Cellulose to be that Microcrystalline Cellulose has been widely used in the production of capsule product as the antiblocking composition in pharmaceutical production, Microcrystalline Cellulose will further reduce the water absorbability of modified polyvinyl alcohol in the present invention, prevent product moisture absorption adhesion.
The present invention selects for use the effect of polyvinylpyrrolidone and modified starch to be to utilize polyvinylpyrrolidone to improve the Shore hardness and the tear strength of film, utilizes modified starch to reduce the percentage of elongation of film.The Shore hardness of existing film is lower than 10, and this draws intensity low excessively, and percentage of elongation is excessive, and this will make film cut in production technique with rolling and can not realize well, can not use automatic packing machine technology simultaneously.
Owing to adopted the scientific combination of above material, made water soluble package film at normal temperatures, be soft translucent laminar, the diaphragm physical behavior is good, outward appearance is beautiful, good to the isolated property of chemical substance with corrodibility and toxic, all gases transmitance in the environment is lower than almost nil, film has better water solubility.Be under 1: 1 the condition, also can dissolve preferably in the quality of diaphragm and water.Film after the dissolving is degraded substantially in 5 days in environment, and COD detection limit on the 5th is one of initial percentage.
Experimental example:
Physics that film should be had jointly according to general-purpose plastics film and water-soluble film and the chemical property gained the results list of testing is as follows
Project Describe in detail and operative norm The result
Outward appearance The water white transparency flexible film Qualified
Thickness GB/T6672,0.03-0.05mm 0.05mm
Tensile strength GB/T13022, 100-300kg/cm 2 280kg/cm 2
Extensibility GB/T1040,10-600% 160%
Hardness GB/T1040, GB/T1039 Shore hardness<20 9<Shore hardness<20
Heat resisting temperature GB1035-70,>140℃ >140℃
Dissolution rate -4 ℃--35 ℃, dissolving in 1 minute 4 ℃/1 minute
Security LD50>10000/mgkg -1Non-stimulated " disinfection technology standard " Qualified
Biological oxygen demand (BOD) on the 5th GB 8978-1996,<1% Qualified
Ventilation property GB1038-70, 0 0
Stability >60 ℃, 14 days, relative humidity was greater than 70%, uviolizing The These parameters no change
Embodiment:
Chitin 10 gram is dissolved in makes viscous solution A in 100 milliliter of 1% lactic acid aqueous solution and get the above-mentioned solution of 10 grams and be diluted to 95 milliliters with 1% lactic acid solution, add secondary alcohol reaction oxydase composition 5 grams, stirred 30 minutes fast, use 1% sodium hydrate regulator solution to neutral alkali partially simultaneously, make chitosan and secondary alcohol reaction oxydase form microcapsule solution B; 600 ml waters are heated to 70 degree, get each 250 gram of the pure and mild polyoxyethylene of modified poly ethylene and add, fully stirring and dissolving is made translucent solution C, filters; 80 gram modified starches, 20 gram Microcrystalline Celluloses and 50 gram polyvinylpyrrolidones are added in 500 ml waters successively, and heating is until dissolving.Add each 50 gram of cocamidopropyl betaine, oleic acid triglyceride and nonoxynolum, fully stir, make solution D; Above-mentioned four kinds of solution are mixed, stir, stand-by; The thickness of above-mentioned solution with 0.10 millimeter is uniformly coated on the Stainless Steel Band of film machine, and heating, drying can obtain thickness and be 0.05 millimeter flexible film.Film is taken off from Stainless Steel Band, cut, pack and make finished product.

Claims (10)

1, water soluble package film of the present invention is characterized in that it being a kind of good isolated property that has, can replace common plastics, metal and glass packaging, quick dispersing and dissolving in water can be degraded into the new packaging material of environmental sound material after the dissolving.
2, water soluble package film according to claim 1 is characterized in that being grouped into by following one-tenth:
Polyoxyethylene 100-400 weight part
Modified polyvinyl alcohol 100-400 weight part
Oleic acid triglyceride 20-60 weight part
Nonoxynolum 20-60 weight part
Cocamidopropyl betaine 20-200 weight part
Secondary alcohol oxidizing reaction enzyme 1-10 weight part
Chitin 1-10 weight part
Microcrystalline Cellulose 1-20 weight part
Polyvinylpyrrolidone 20-120 weight part
Modified starch 20-120 weight part
Deionized water residuals weight part
3, water soluble package film according to claim 2 is characterized in that polyoxyethylene and modified polyvinyl alcohol are the film forming main components, two kinds of film forming components are according to 99: 1--1: 99 proportional range makes up, film forming effectively, prevent the moisture absorption adhesion, have good isolated property, thermotolerance, heat seal and, organic solvent resistance and water-soluble.
4, water soluble package film according to claim 2 is characterized in that softening agent is the oleic acid triglyceride, and the oleic acid triglyceride does not produce hygroscopic effect in the effect of playing softening agent.
5, water soluble package film according to claim 2 is characterized in that used nonoxynolum is a kind of dispersion agent, plays the dissolved thin film composition is dispersed in effect in the water fast.
6, water soluble package film according to claim 2 is characterized in that used cocamidopropyl betaine is a kind of tensio-active agent, reduces the surface tension of solution in the making processes of film, film uniformity that assurance becomes.
7, water soluble package film according to claim 2 is characterized in that used secondary alcohol oxidizing reaction enzyme its role is to after Film Fractionation is in environment, and the degradable film film forming component makes it to become the carbonic acid gas of environmental sound and water etc.
8, water soluble package film according to claim 2 is characterized in that used chitin is a kind of microcapsule, and its effect is that secondary alcohol oxidizing reaction enzyme is protected through micro encapsulation, keeps its activity.
9, water soluble package film according to claim 2 is characterized in that used Microcrystalline Cellulose is a kind of antiblocking agent, and its effect is the water absorbability that reduces film.
10, water soluble package film according to claim 2 is characterized in that used modified starch and polyvinylpyrrolidone its role is to improve the hardness of film, extensibility and tear strength, makes that the physical property of film is more suitable for that automatization is cut, rolling and packing.
CN2006100836998A 2006-06-05 2006-06-05 Degradable water soluble packaging film Expired - Fee Related CN101085850B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2006100836998A CN101085850B (en) 2006-06-05 2006-06-05 Degradable water soluble packaging film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2006100836998A CN101085850B (en) 2006-06-05 2006-06-05 Degradable water soluble packaging film

Publications (2)

Publication Number Publication Date
CN101085850A true CN101085850A (en) 2007-12-12
CN101085850B CN101085850B (en) 2011-03-16

Family

ID=38937031

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2006100836998A Expired - Fee Related CN101085850B (en) 2006-06-05 2006-06-05 Degradable water soluble packaging film

Country Status (1)

Country Link
CN (1) CN101085850B (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102391530A (en) * 2011-06-29 2012-03-28 郝喜海 Method for manufacturing polyvinyl alcohol slow/controlled release film
CN102617046A (en) * 2012-04-11 2012-08-01 林嘉宏 Glass containing protective coating layer
CN103172912A (en) * 2013-03-14 2013-06-26 南京林业大学 Preparation method of modified microcrystalline cellulose enhanced starch plastic
CN104830000A (en) * 2015-04-29 2015-08-12 安徽松泰包装材料有限公司 Production method of food package material
CN105885174A (en) * 2016-05-31 2016-08-24 蚌埠天成包装科技股份有限公司 Anti-fog moisture-absorption film for fresh product packaging
CN106496894A (en) * 2016-10-31 2017-03-15 安徽鼎正高分子材料科技有限责任公司 A kind of low-temperature water-soluble pesticides packaging film and preparation method thereof
CN106566150A (en) * 2016-10-31 2017-04-19 安徽鼎正高分子材料科技有限责任公司 Water-soluble single seed packaging film prepared through impregnation method
CN107286547A (en) * 2017-07-31 2017-10-24 海南大学 A kind of preparation method of chitin liquefaction products/polyvinyl alcohol blending film
WO2018041262A1 (en) * 2016-09-05 2018-03-08 广东聚益新材有限公司 Water-soluble shopping bag and preparation method therefor
CN108314891A (en) * 2018-03-21 2018-07-24 安徽江淮汽车集团股份有限公司 A kind of PEO composite material and preparation methods
CN109181179A (en) * 2018-07-03 2019-01-11 海南大学 A kind of crust liquefied substance/degradation plastic blend film and preparation method thereof
WO2024097921A1 (en) * 2022-11-04 2024-05-10 H.J. Heinz Company Brands Llc Degradation of polyvinyl alcohol and derivatives thereof using an enzymatic cascade

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1142264C (en) * 2002-01-15 2004-03-17 北京博恒新材料研究有限责任公司 Completely water-soluble hand-washing film

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102391530A (en) * 2011-06-29 2012-03-28 郝喜海 Method for manufacturing polyvinyl alcohol slow/controlled release film
CN102617046A (en) * 2012-04-11 2012-08-01 林嘉宏 Glass containing protective coating layer
CN103172912A (en) * 2013-03-14 2013-06-26 南京林业大学 Preparation method of modified microcrystalline cellulose enhanced starch plastic
CN104830000A (en) * 2015-04-29 2015-08-12 安徽松泰包装材料有限公司 Production method of food package material
CN105885174A (en) * 2016-05-31 2016-08-24 蚌埠天成包装科技股份有限公司 Anti-fog moisture-absorption film for fresh product packaging
WO2018041262A1 (en) * 2016-09-05 2018-03-08 广东聚益新材有限公司 Water-soluble shopping bag and preparation method therefor
GB2568639A (en) * 2016-09-05 2019-05-22 Polye Mat Co Ltd Water-soluble shopping bag and preparation method therefor
US10954372B2 (en) 2016-09-05 2021-03-23 Polye Materials Co., Ltd. Water soluble shopping bag and preparation method thereof
GB2568639B (en) * 2016-09-05 2021-07-28 Polye Mat Co Ltd Water-soluble shopping bag and preparation method therefor
CN106566150A (en) * 2016-10-31 2017-04-19 安徽鼎正高分子材料科技有限责任公司 Water-soluble single seed packaging film prepared through impregnation method
CN106496894A (en) * 2016-10-31 2017-03-15 安徽鼎正高分子材料科技有限责任公司 A kind of low-temperature water-soluble pesticides packaging film and preparation method thereof
CN107286547A (en) * 2017-07-31 2017-10-24 海南大学 A kind of preparation method of chitin liquefaction products/polyvinyl alcohol blending film
CN108314891A (en) * 2018-03-21 2018-07-24 安徽江淮汽车集团股份有限公司 A kind of PEO composite material and preparation methods
CN109181179A (en) * 2018-07-03 2019-01-11 海南大学 A kind of crust liquefied substance/degradation plastic blend film and preparation method thereof
CN109181179B (en) * 2018-07-03 2021-05-11 海南大学 Chitin liquefiable matter/degradable plastic blending film and preparation method thereof
WO2024097921A1 (en) * 2022-11-04 2024-05-10 H.J. Heinz Company Brands Llc Degradation of polyvinyl alcohol and derivatives thereof using an enzymatic cascade

Also Published As

Publication number Publication date
CN101085850B (en) 2011-03-16

Similar Documents

Publication Publication Date Title
CN101085850B (en) Degradable water soluble packaging film
CN103289266B (en) Water-soluble plastic packaging bag and preparation method thereof
Sofyane et al. Slow-release fertilizers based on starch acetate/glycerol/polyvinyl alcohol biocomposites for sustained nutrient release
CN101855247B (en) Method for preparing very low viscosity cellulose ether and product
CN100462394C (en) Edible food package film and method for preparing same
CN108102152A (en) A kind of food packaging hectorite immobilization nano silver/chitosan anti-bacteria composite membrane and preparation method and application
CN108996629A (en) Potassium Monopersulfate compound effervescent tablet and preparation method thereof for the improvement of water quality substrate
CN108998275B (en) High water-solubility washing powder composition and preparation method thereof
CN108992830A (en) A kind of high-adhesiveness hydrogel extinguishing chemical and preparation method thereof
CN107459874A (en) A kind of sealer and preparation method thereof
CN107189478A (en) A kind of straw refuse regenerated environment protecting abrasion resistant fire blocking sheet material and preparation method thereof
CN101492327A (en) Nitrogenous fertilizer coating type sustained-release chemical fertilizer
JPS62192301A (en) Production of solidified chemical
CN100563793C (en) Visual type pernicious gas remover and preparation method thereof
CN105727491A (en) Formula of foam extinguishing agent containing biosurfactant and preparation method for foam extinguishing agent
CN105518069B (en) The dispersible film of water for packing High water cut preparation
CN114525699A (en) PVA coating liquid, PVA paper-plastic composite material and preparation method thereof
CN104707463A (en) Chlorine dioxide air purification sustained release preparation added with tea polyphenol
CN115109419B (en) Metal organic framework gel for hazardous chemical decontamination and preparation method thereof
CN114478128B (en) Wrapped type anti-powdering additive, anti-powdering fertilizer and preparation method of anti-powdering fertilizer
EP4105290A1 (en) Production method for adhesive layer composition for production of cooling sheet, production method for cooling sheet, and cooling sheet
US2822281A (en) Opaque water color compositions and method of making same
CN111153382A (en) Hydrogen sustained release agent containing ammonia borane and application thereof
CN1255390A (en) Water-soluble fire-extinguishing chemical
CN100582007C (en) Ammonii chloridum caking-proof agent and its application in preparation of caking-proof ammonii chloridum

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C57 Notification of unclear or unknown address
DD01 Delivery of document by public notice

Addressee: Xu Xiufeng

Document name: Notification before expiration of term

C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20071212

Assignee: ANHUI DINGZHENG PACKAGING MATERIAL Co.,Ltd.

Assignor: Xu Xiufeng

Contract record no.: 2015340000129

Denomination of invention: Degradable water soluble packaging film

Granted publication date: 20110316

License type: Exclusive License

Record date: 20150928

LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20221208

Address after: 511450 201, Building 1, No. 4, Huangshan Road, Dalong Street, Panyu District, Guangzhou, Guangdong

Patentee after: Nuokang United (Guangzhou) Co.,Ltd.

Address before: 100084 room 2315, incubator building, No. 123 North Main Street, Beijing, Haidian District, Zhongguancun

Patentee before: Xu Xiufeng

TR01 Transfer of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110316

CF01 Termination of patent right due to non-payment of annual fee