CN114775164A - RFID electronic tag substrate capable of being repeatedly folded and preparation method thereof - Google Patents
RFID electronic tag substrate capable of being repeatedly folded and preparation method thereof Download PDFInfo
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- CN114775164A CN114775164A CN202210700920.9A CN202210700920A CN114775164A CN 114775164 A CN114775164 A CN 114775164A CN 202210700920 A CN202210700920 A CN 202210700920A CN 114775164 A CN114775164 A CN 114775164A
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- Prior art keywords
- magnesium sulfate
- electrostatic spinning
- basic magnesium
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- polyhydroxybutyrate
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Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/435—Polyesters
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/0772—Physical layout of the record carrier
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention provides a RFID electronic tag substrate capable of being repeatedly folded and a preparation method thereof, and belongs to the technical field of high-end equipment manufacturing. The base material comprises a repeatedly foldable electrostatic spinning film, and the electrostatic spinning film comprises, by mass, 4-6 parts of modified basic magnesium sulfate whiskers, 2-4 parts of polyhydroxybutyrate, 1-3 parts of a plasticizer and 0.4-0.6 part of a surfactant. According to the method, polyhydroxybutyrate and modified basic magnesium sulfate whiskers are jointly used for electrostatic spinning, so that the problem of overlarge brittleness of polyhydroxybutyrate is solved, and the anti-folding electronic tag substrate is obtained; the cellulose nanocrystals used as the plasticizer, the polyhydroxybutyrate and the modified basic magnesium sulfate whisker have good synergistic effect, and the tension of the substrate of the electronic tag is improved, so that the electronic tag is more suitable for the gravure printing process; the application provides an electronic tags substrate has green degradable characteristic, provides a new green electronic material.
Description
Technical Field
The application relates to the technical field of high-end equipment manufacturing, in particular to a RFID electronic tag substrate capable of being repeatedly folded and a preparation method thereof.
Background
The replacement of consumer electronics in modern society generates more and more electronic waste products which are harmful to the environment and the health of human beings, so that the sustainable use of green electronic products becomes a focus of attention of our society. As the RFID electronic tag technology is popularized worldwide, the RFID electronic tag technology is gradually applied to the fields of public transportation management, commercial retail, logistics management, anti-counterfeiting, and the like. However, at present, a part of the RFID electronic tag substrate adopts paper materials, and the other part adopts non-degradable plastics. Both paper and non-degradable plastics cause certain burden to the environment.
In recent years, polyhydroxybutyrate serving as a novel degradable material comes into the sight of people, the traditional plastic degradation needs 100 years, and products produced by polyhydroxybutyrate can be decomposed in 12 months, and only water and carbon dioxide are released, so that the environment is really protected. However, the defects of high brittleness, poor thermal stability and the like still exist, and the electronic tag is limited in application and cannot be used for a long time and is easy to lose information after being folded.
Disclosure of Invention
The invention aims to provide a degradable environment-friendly electronic label substrate which is suitable for gravure printing and can be repeatedly folded.
On one hand, the substrate comprises an electrostatic spinning film capable of being repeatedly folded, and the electrostatic spinning film comprises, by mass, 4-6 parts of modified basic magnesium sulfate whiskers, 2-4 parts of polyhydroxybutyrate, 1-3 parts of a plasticizer and 0.4-0.6 part of a surfactant.
Furthermore, the electrostatic spinning film comprises 5.5 parts of modified basic magnesium sulfate whisker, 3 parts of polyhydroxybutyrate, 2 parts of plasticizer and 0.5 part of surfactant in parts by mass.
Further, the plasticizer is cellulose nanocrystal.
Further, the surfactant is stearic acid monoglyceride.
On the other hand, the application also provides a preparation method of the repeatedly foldable electronic label substrate, which comprises the following steps:
dissolving basic magnesium sulfate whisker and lauryl alcohol in an ethanol water solution, and reacting to obtain modified basic magnesium sulfate whisker;
step two, dissolving the modified basic magnesium sulfate whisker, polyhydroxybutyrate, plasticizer and surfactant in chloroform, and fully dissolving to obtain an electrostatic spinning solution;
and step three, carrying out electrostatic spinning by using the electrostatic spinning solution to obtain an electrostatic spinning film, and drying for 3 h at 60 ℃ to obtain the electronic tag substrate.
Further, in the first step, the concentration of the ethanol water solution is 60%, the reaction condition is 50 ℃, the reaction time is 10 min, and the drying time is 6 h at 80 ℃.
Further, in the second step, the dissolving condition is magnetic stirring at 60 ℃ for 1500 r/min for 12 h.
Furthermore, the electrostatic spinning parameters comprise the flow rate of the spinning solution of 5 mL/h, the injection amount of 5 mL, the voltage of 15 kV, the receiving distance of 13 cm and the rotating speed of a receiving roller of 80 r/min.
In a preferred embodiment, the method for making the repeatedly foldable electronic label substrate comprises the following steps:
step one, dissolving 5 g of basic magnesium sulfate whisker and 0.5 g of lauryl alcohol in 50 mL of 60% ethanol aqueous solution, reacting for 10 min at 50 ℃, and drying for 6 h at 80 ℃ to obtain modified basic magnesium sulfate whisker;
step two, dissolving 5.5 g of modified basic magnesium sulfate whisker, 3 g of polyhydroxybutyrate, 2 g of cellulose nanocrystal and 0.5 g of glyceryl monostearate in 50 mL of chloroform, magnetically stirring at 60 ℃ for 1500 r/min, and fully dissolving for 12 hours to obtain an electrostatic spinning solution;
and step three, carrying out electrostatic spinning, wherein the parameters are the flow rate of the spinning solution is 5 mL/h, the injection amount is 5 mL, the voltage is 15 kV, the receiving distance is 13 cm, the rotating speed of a receiving roller is 80 r/min, after the spinning is finished, the prepared electrostatic spinning film is taken down from the receiving roller and is put into a 60 ℃ oven to be dried for 3 hours, so that the residual solvent on the electrostatic spinning film is volatilized, and the electronic tag substrate is obtained.
The application discovers that the problem of overlarge brittleness of polyhydroxybutyrate can be solved by carrying out electrostatic spinning on polyhydroxybutyrate and modified basic magnesium sulfate whiskers together, and the folding-resistant electronic tag substrate material with better mechanical property is obtained. In addition, the stearic acid monoglyceride can promote the solubility of polyhydroxybutyrate and modified basic magnesium sulfate whisker, and the system stability is improved. The cellulose nanocrystal is used as a plasticizer, can improve the mechanical property of the electronic tag substrate together with polyhydroxybutyrate and modified basic magnesium sulfate whiskers, and improves the tension of the electronic tag substrate to a certain extent, so that the cellulose nanocrystal is more suitable for the gravure printing process.
On the other hand, the application also provides the application of the repeatedly foldable electronic label substrate in the RFID electronic label.
Further, the preparation method of the RFID electronic tag is gravure printing.
The invention has the following beneficial effects:
1. according to the method, polyhydroxybutyrate and modified basic magnesium sulfate whiskers are jointly subjected to electrostatic spinning, so that the problem that the brittleness of polyhydroxybutyrate is too high is solved, and an anti-folding electronic tag substrate material with good mechanical property is obtained;
2. in the application, the stearic acid monoglyceride promotes the solubility of polyhydroxybutyrate and modified basic magnesium sulfate whiskers in a system, and the stability of the solution system is improved;
3. the cellulose nanocrystals used as the plasticizer, the polyhydroxybutyrate and the modified basic magnesium sulfate whisker have a good synergistic effect, the mechanical property of the electronic label substrate is improved together, and the tension of the electronic label substrate is improved to a certain extent, so that the electronic label substrate is more suitable for the gravure printing process;
4. the application provides an electronic tags substrate has green degradable characteristic, provides a new green electronic material to be applicable to the intaglio printing in-process, the complete degradable RFID electronic tags can be prepared to cooperation degradable electrically conductive thick liquids.
Detailed Description
The following detailed description is given by way of example in order to more clearly illustrate the general concept of the present application. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer.
Wherein, polyhydroxybutyrate is provided by Hubeixin Red chemical industry Co., Ltd; the basic magnesium sulfate whisker is provided by Shanxi Dadu pharmaceutical chemical Co Ltd; lauryl alcohol is available from Shanghai Ji to Biochemical technology, Inc.; stearic acid monoglyceride, disodium lauryl sulfosuccinate monoester, disodium cocomonoethanolamide sulfosuccinate monoester were provided by Shanghai eosin industries, Inc.; cellulose nanocrystalline and cellulose nanofiber tin-free Taixian powder provided by science and technology Limited; the graphene conductive ink is provided by Dalianyi Bangkong science and technology Limited; dynamic torsion machines are offered by shanghai dynasty wing precision instruments ltd.
In the following embodiments, reagents or apparatuses used are not indicated by manufacturers, and are conventional products commercially available, unless otherwise specified.
Example 1 polyhydroxybutyrate built test
Dissolving 3 g of polyhydroxybutyrate and 5.5 g of modified basic magnesium sulfate whisker or basic magnesium sulfate whisker in 50 mL of trichloromethane, magnetically stirring at 60 ℃ for 1500 r/min, and fully dissolving for 12 h to obtain an electrostatic spinning solution; and (3) carrying out electrostatic spinning, wherein the flow rate of the spinning solution is 5 mL/h, the injection amount is 5 mL, the voltage is 15 kV, the receiving distance is 13 cm, and the rotating speed of a receiving roller is 80 r/min, taking down the prepared electrostatic spinning film from the receiving roller after the spinning is finished, and putting the electrostatic spinning film into a 60 ℃ oven to be dried for 3 h to volatilize the residual solvent on the electrostatic spinning film, so that the electronic tag substrate is obtained. The preparation method of the modified basic magnesium sulfate whisker comprises the following steps: 5 g of basic magnesium sulfate whisker and 0.5 g of lauryl alcohol are dissolved in 50 mL of 60% ethanol aqueous solution, reacted for 10 min at 50 ℃, and dried for 6 h at 80 ℃.
Bending test is carried out by using a dynamic bending machine, the bending frequency is 0.5 Hz, the displacement of the long side is 20 mm, the displacement of the short side is 10 mm, the torsion degree is +/-15 degrees, the forward and reverse directions are respectively 15 degrees and totally 30 degrees, the test is carried out for 5000 times, whether cracking and breaking exist in the appearance of the substrate is observed after the test is finished, and the test result is shown in table 1.
The results in table 1 show that the substrate obtained by compounding polyhydroxybutyrate and modified basic magnesium sulfate whiskers has better mechanical property and can be bent for multiple times. However, during the operation, the electrostatic spinning solution of polyhydroxybutyrate and modified basic magnesium sulfate whisker is not stable, and partial precipitation occurs.
Example 2 stability test
Under the preferred conditions of example 1, different surfactants were added to the electrospinning solution. The stability of the solution system was observed and the test results are shown in table 2.
As can be seen from the results in Table 2, the use of glyceryl monostearate as a surfactant can improve the stability of the polyhydroxybutyrate and modified basic magnesium sulfate whisker system.
Test example 1
Step one, dissolving 5 g of basic magnesium sulfate whisker and 0.5 g of lauryl alcohol in 50 mL of 60% ethanol aqueous solution, reacting for 10 min at 50 ℃, and drying for 6 h at 80 ℃ to obtain modified basic magnesium sulfate whisker;
step two, dissolving 5.5 g of modified basic magnesium sulfate whisker, 3 g of polyhydroxybutyrate, 2 g of cellulose nanocrystal and 0.5 g of glycerol monostearate in 50 mL of chloroform, magnetically stirring at 60 ℃ for 1500 r/min, and fully dissolving for 12 hours to obtain an electrostatic spinning solution;
and step three, carrying out electrostatic spinning, wherein the parameters are the flow rate of the spinning solution is 5 mL/h, the injection amount is 5 mL, the voltage is 15 kV, the receiving distance is 13 cm, the rotating speed of a receiving roller is 80 r/min, after the spinning is finished, the prepared electrostatic spinning film is taken down from the receiving roller and is put into a 60 ℃ oven to be dried for 3 hours, so that the residual solvent on the electrostatic spinning film is volatilized, and the electronic tag substrate is obtained.
The RFID electronic tag is prepared by the following method:
attaching graphene conductive ink in an ink groove to a gravure groove of a gravure roller, scraping redundant conductive ink by a doctor blade, and transferring the conductive ink to the substrate by rolling of the gravure roller and a stamping roller to obtain a printing substrate;
and secondly, drying and curing the printing substrate at high temperature, and secondarily rolling the printing substrate into a film through a roller to obtain the graphene RFID electronic tag.
Test example 2
This test example is different from test example 1 only in that it was prepared by the co-melting method.
Test example 3
The difference between the test example and the test example 1 is only that the mass ratio of the modified basic magnesium sulfate whisker to the polyhydroxybutyrate to the cellulose nanocrystal is 10:6: 4.
Test example 4
The present test example differs from test example 1 only in that cellulose nanocellulose is used instead of cellulose nanocrystals.
Test example 5
The present test example differs from test example 1 only in that cellulose nanocrystals are not contained.
Example 3 tension test
An electronic label substrate was produced by the method described in test examples 1 to 5, and gravure printing was performed on the electronic label substrate to produce a graphene RFID electronic label. The printing effect depends on the adhesion of the ink to the substrate surface, which is also related to the surface tension of the substrate itself. And testing the surface tension according to a method specified in GB 14216-2008-T, and observing whether the edge of the electronic tag antenna is smooth and whether sawtooth-shaped bulges exist around the edge.
As can be seen from the results in table 3, the electronic tag substrate obtained in test example 1 has a relatively appropriate surface tension and a relatively good printing effect, and is suitable for manufacturing a graphene RFID electronic tag by gravure printing.
EXAMPLE 4 fold resistance test
The electronic tags of test examples 1 to 5 were tested for their anti-folding properties by the method of example 1, and the maximum number of folds was recorded.
As can be seen from the results in Table 4, the electronic label substrate obtained in test example 1 had a taught folding resistance.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. The repeatedly foldable electronic tag substrate is characterized by comprising a repeatedly foldable electrostatic spinning film, wherein the electrostatic spinning film comprises, by mass, 4-6 parts of modified basic magnesium sulfate whisker, 2-4 parts of polyhydroxybutyrate, 1-3 parts of plasticizer and 0.4-0.6 part of surfactant.
2. The repeatedly foldable electronic label substrate according to claim 1, wherein the electrospun film comprises 5.5 parts of modified basic magnesium sulfate whisker, 3 parts of polyhydroxybutyrate, 2 parts of plasticizer and 0.5 part of surfactant in parts by mass.
3. The refoldable electronic label substrate of claim 1, wherein the plasticizer is a cellulose nanocrystal.
4. The refoldable electronic label substrate of claim 1 wherein the surfactant is glycerol monostearate.
5. A method of making a repeatedly foldable electronic label substrate according to any one of claims 1 to 4 comprising the steps of:
dissolving basic magnesium sulfate whisker and lauryl alcohol in an ethanol water solution, and reacting to obtain modified basic magnesium sulfate whisker;
step two, dissolving the modified basic magnesium sulfate whisker, polyhydroxybutyrate, plasticizer and surfactant in chloroform, and fully dissolving to obtain an electrostatic spinning solution;
and step three, carrying out electrostatic spinning by using the electrostatic spinning solution to obtain an electrostatic spinning film, and drying for 3 h at 60 ℃ to obtain the electronic tag substrate.
6. The method according to claim 5, wherein in the first step, the concentration of the ethanol aqueous solution is 60%, the reaction condition is 50 ℃, the reaction time is 10 min, and the drying time is 6 h at 80 ℃.
7. The method of claim 5, wherein the dissolution conditions are 60 ℃ magnetic stirring at 1500 r/min for 12 h.
8. The method according to claim 5, wherein the electrospinning parameters are a spinning solution flow rate of 5 mL/h, an injection volume of 5 mL, a voltage of 15 kV, a receiving distance of 13 cm, and a receiving roller rotation speed of 80 r/min.
9. Use of a refoldable electronic label substrate as claimed in any one of claims 1 to 4 in an RFID electronic label.
10. The use according to claim 9, wherein the RFID electronic label is produced by gravure printing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210700920.9A CN114775164B (en) | 2022-06-21 | 2022-06-21 | RFID electronic tag substrate capable of being repeatedly folded and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210700920.9A CN114775164B (en) | 2022-06-21 | 2022-06-21 | RFID electronic tag substrate capable of being repeatedly folded and preparation method thereof |
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| CN114775164A true CN114775164A (en) | 2022-07-22 |
| CN114775164B CN114775164B (en) | 2022-09-09 |
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Citations (8)
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| CN101003917A (en) * | 2007-01-19 | 2007-07-25 | 中国民航大学 | Complex type electrostatic spinning method with positive and negative electrodes in same electric field, and application |
| CN102516722A (en) * | 2011-11-16 | 2012-06-27 | 仪化东丽聚酯薄膜有限公司 | Polyester film for electronic tag and preparation method thereof |
| CN103484970A (en) * | 2009-09-30 | 2014-01-01 | 株式会社Adeka | Polyester fiber |
| CN107034586A (en) * | 2017-04-21 | 2017-08-11 | 天津工业大学 | A kind of poly butyric ester/polypyrrole composite conducting nano fibrous membrane and preparation method thereof |
| CN108888798A (en) * | 2018-09-12 | 2018-11-27 | 圆容生物医药无锡有限公司 | A kind of flexible foldable biomembrane and preparation method thereof |
| CN109518280A (en) * | 2018-11-28 | 2019-03-26 | 桑顿新能源科技有限公司 | A kind of method of modifying and modified alkali magnesium sulfate crystal whisker of alkali magnesium sulfate crystal whisker |
| US20200074253A1 (en) * | 2018-09-05 | 2020-03-05 | Bgt Materials Limited | Washing mark with rf identification |
| CN114262949A (en) * | 2021-12-28 | 2022-04-01 | 南通新帝克单丝科技股份有限公司 | Preparation method of heat-storage temperature-regulating polypropylene monofilament |
-
2022
- 2022-06-21 CN CN202210700920.9A patent/CN114775164B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101003917A (en) * | 2007-01-19 | 2007-07-25 | 中国民航大学 | Complex type electrostatic spinning method with positive and negative electrodes in same electric field, and application |
| CN103484970A (en) * | 2009-09-30 | 2014-01-01 | 株式会社Adeka | Polyester fiber |
| CN102516722A (en) * | 2011-11-16 | 2012-06-27 | 仪化东丽聚酯薄膜有限公司 | Polyester film for electronic tag and preparation method thereof |
| CN107034586A (en) * | 2017-04-21 | 2017-08-11 | 天津工业大学 | A kind of poly butyric ester/polypyrrole composite conducting nano fibrous membrane and preparation method thereof |
| US20200074253A1 (en) * | 2018-09-05 | 2020-03-05 | Bgt Materials Limited | Washing mark with rf identification |
| CN108888798A (en) * | 2018-09-12 | 2018-11-27 | 圆容生物医药无锡有限公司 | A kind of flexible foldable biomembrane and preparation method thereof |
| CN109518280A (en) * | 2018-11-28 | 2019-03-26 | 桑顿新能源科技有限公司 | A kind of method of modifying and modified alkali magnesium sulfate crystal whisker of alkali magnesium sulfate crystal whisker |
| CN114262949A (en) * | 2021-12-28 | 2022-04-01 | 南通新帝克单丝科技股份有限公司 | Preparation method of heat-storage temperature-regulating polypropylene monofilament |
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| CN114775164B (en) | 2022-09-09 |
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