CN112726277A - Preparation method of microcapsule paper - Google Patents
Preparation method of microcapsule paper Download PDFInfo
- Publication number
- CN112726277A CN112726277A CN202011595790.4A CN202011595790A CN112726277A CN 112726277 A CN112726277 A CN 112726277A CN 202011595790 A CN202011595790 A CN 202011595790A CN 112726277 A CN112726277 A CN 112726277A
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- Prior art keywords
- microcapsule
- cnf
- paper
- enveloping
- stirring
- Prior art date
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Links
- 239000003094 microcapsule Substances 0.000 title claims abstract description 109
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 23
- 229920002678 cellulose Polymers 0.000 claims abstract description 22
- 239000001913 cellulose Substances 0.000 claims abstract description 22
- 239000006185 dispersion Substances 0.000 claims abstract description 20
- 239000007787 solid Substances 0.000 claims abstract description 11
- XSAOIFHNXYIRGG-UHFFFAOYSA-M lithium;prop-2-enoate Chemical compound [Li+].[O-]C(=O)C=C XSAOIFHNXYIRGG-UHFFFAOYSA-M 0.000 claims abstract description 10
- 230000002195 synergetic effect Effects 0.000 claims abstract description 10
- 239000011229 interlayer Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 229920000858 Cyclodextrin Polymers 0.000 claims abstract description 6
- 239000001116 FEMA 4028 Substances 0.000 claims abstract description 6
- WHGYBXFWUBPSRW-FOUAGVGXSA-N beta-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO WHGYBXFWUBPSRW-FOUAGVGXSA-N 0.000 claims abstract description 6
- 235000011175 beta-cyclodextrine Nutrition 0.000 claims abstract description 6
- 229960004853 betadex Drugs 0.000 claims abstract description 6
- 230000007935 neutral effect Effects 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 6
- 238000005429 filling process Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 3
- 230000008569 process Effects 0.000 claims description 16
- 125000002091 cationic group Chemical group 0.000 claims description 7
- 229920002472 Starch Polymers 0.000 claims description 6
- 239000008107 starch Substances 0.000 claims description 6
- 235000019698 starch Nutrition 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 238000011049 filling Methods 0.000 abstract description 12
- 229920001131 Pulp (paper) Polymers 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 12
- 229920001046 Nanocellulose Polymers 0.000 description 9
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000010030 laminating Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 206010042674 Swelling Diseases 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229920001353 Dextrin Polymers 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/50—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by form
- D21H21/52—Additives of definite length or shape
- D21H21/54—Additives of definite length or shape being spherical, e.g. microcapsules, beads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
- D21H11/18—Highly hydrated, swollen or fibrillatable fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
- D21H17/29—Starch cationic
Abstract
The invention discloses a preparation method of microcapsule paper. The method comprises the following steps: 1) making thin wet paper web with weight of 15-20g/m2 with paper sheet former; 2) adding the microcapsule enveloping system between two pieces of wet paper by an interlayer filling process, and 3) preparing the high enveloping microcapsule paper by utilizing a squeezing and drying process; the preparation method of the microcapsule enveloping system comprises the following steps: 21) mixing and stirring the nanofibrillated cellulose and the microcapsule taking the beta-cyclodextrin as the main body; forming a CNF/microcapsule dispersion; 22) at normal temperature, adding 1-3% lithium acrylate solution into the CNF/microcapsule dispersion system for pretreatment for 5-15 min; 23) centrifugally washing the pretreated CNF/microcapsule disperse system to be neutral; 24) and enveloping the microcapsules with solid content of 10-15% in the washed CNF/microcapsule disperse system, and simultaneously assisting ultrasonic waves and stirring for synergistic dispersion. The gradual enveloping microcapsule pre-enveloping system can ensure that the filling amount of the microcapsules is far higher than the microcapsule content in the common paper pulp and microcapsule mixed papermaking paper.
Description
Technical Field
The invention relates to a preparation method of microcapsule paper.
Background
The addition of microcapsules to paper can impart new functionality to the paper. For example, the addition of the fragrant microcapsules in the paper can ensure that the fragrance of the paper has a long-term retention effect; the microcapsule with porous property can be highly filled by the coating effect of the nano-cellulose, the adsorption performance of paper is enhanced, and the microcapsule has important application in green packaging or home decoration.
The conventional microcapsule is mixed with paper, the filling amount of the microcapsule is low, a large amount of microcapsules can be lost in the papermaking process, and the mixed papermaking effect is not obvious.
Disclosure of Invention
In order to overcome the defects, the invention provides a preparation method of microcapsule paper, which adopts CNF as a pre-enveloping body structure and can greatly increase the content of microcapsules in paper.
In order to achieve the purpose, the preparation method of the microcapsule paper comprises the following steps:
1) making thin wet paper web with weight of 15-20g/m2 with paper sheet former;
2) the microcapsule enveloping system is added between two pieces of wet paper by an interlayer filling process,
3) preparing high-envelope microcapsule paper by using a squeezing and drying process;
the preparation method of the microcapsule enveloping system comprises the following steps:
21) mixing and stirring the nanofibrillated cellulose and the microcapsule taking the beta-cyclodextrin as the main body; forming a CNF/microcapsule dispersion;
22) at normal temperature, adding 1-3% lithium acrylate solution into the CNF/microcapsule dispersion system for pretreatment for 5-15 min;
23) centrifugally washing the pretreated CNF/microcapsule disperse system to be neutral;
24) enveloping the microcapsules with solid content of 10-15% in the washed CNF/microcapsule disperse system, and simultaneously assisting ultrasonic wave and stirring for synergistic dispersion;
further, the method also comprises the following steps:
25) adding cationic starch in the process of stirring and ultrasonic cavitation synergistic treatment.
Further, the method specifically comprises the following steps:
31) adding 30-40% w/w of microcapsule taking beta-cyclodextrin as main body into nanofibrillated cellulose with solid content of 1-3%, mixing and stirring at the stirring speed of 1500-2000rpm for 20-30 min; simultaneously, uniformly dispersing the mixture by ultrasonic wave synergistic treatment to form a CNF/microcapsule dispersion system;
32) at normal temperature, adding 1-3% lithium acrylate solution into the CNF/microcapsule dispersion system for pretreatment for 5-15 min;
33) centrifugally washing the CNF/microcapsule dispersion system for 4-6 times until the system is washed to be neutral;
34) enveloping the microcapsules with solid content of 10-15% in the washed CNF/microcapsule disperse system, and simultaneously assisting ultrasonic and stirring for synergistic dispersion;
35) stirring the CNF/microcapsule under the condition of keeping the content of the CNF/microcapsule at 3-5% of solid content; the stirring speed is 1500-; carrying out ultrasonic cavitation cooperative treatment; in the process, 0.01-0.03% of cationic starch is added.
The invention adopts the nanocellulose fiber to gradually envelop the microcapsule pre-enveloping system, so that the filling amount of the microcapsules is far higher than the content of the microcapsules in the common paper pulp and microcapsule mixed papermaking paper, and the microcapsules can be fixed in a rich nanocellulose network structure and can be uniformly dispersed among layers. In addition, in the laminating process, due to the abundant net-shaped cross-linking structure of the nano-cellulose and the existence of a large amount of hydroxyl on the surface, a large amount of hydrogen bonds are generated between the upper layer and the lower layer in the laminating process, and the interlayer bonding strength between the two layers is increased.
Detailed Description
Examples
Chemical pulp board of softwood and hardwood with beating degree of 40-50 DEG SR; the mass fraction (retention aid) of the cationic polyacrylamide is 0.03-0.05%;
a paper sheet former is adopted to manufacture thin paper with the fixed quantity of 15-20g/m2, a CNF/microcapsule enveloping system is added between two wet paper webs through an interlayer filling process to be pressed and dried, and a great amount of hydroxyl on the surfaces of nanocellulose and microcapsules are utilized to form hydrogen bond connection with upper and lower paper webs, so that the connection between the upper and lower layers is tighter, the microcapsules can be completely filled into the paper, a great amount of loss of the microcapsules cannot be caused, and the full filling effect is achieved.
The preparation process of the CNF/microcapsule envelope system is as follows:
(1) mixing and stirring the nanofibrillated cellulose with the solid content of 1-3% and the microcapsule (the adding amount is 30-40% w/w) taking the beta-cyclodextrin as the main body; the stirring speed is 1500-; meanwhile, uniformly dispersing the mixture with ultrasonic wave (fixed frequency and same time) to form a CNF/microcapsule dispersion system.
(2) At normal temperature, 1-3% lithium acrylate solution is added into a CNF/microcapsule dispersion system for pretreatment for 5-15min, so that the amorphous region structure on the surface of cellulose is looser and more free hydroxyl groups are exposed, and a richer hydroxyl network structure is formed.
(3) And (4) centrifugally washing the system for 4-6 times until the system is washed to be neutral.
(4) Then the microcapsule with solid content of 10-15% is enveloped, and simultaneously ultrasonic wave and stirring are assisted to realize synergistic dispersion, so that the characteristic of the microcapsule adding process in the system is achieved to the maximum extent.
(5) Stirring (stirring speed 1500-. A novel nano-fibrillating cellulose/cationic starch/microcapsule enveloping body with the maximum enveloping microcapsule effect of nano-cellulose is formed.
In the process, the nano-cellulose has high fibrillation degree, large specific surface area and abundant free hydroxyl groups, so that abundant net structures can be formed in the matrix material. The nano-cellulose has special properties which are not possessed by conventional fibers, such as high water retention value, good cohesive force, thickening property, suspension property, stability, dispersibility and the like, and the microcapsule is a micron-level granular substance taking beta-cyclic dextrin as a main body. Because the surfaces of the microcapsule and the nano-cellulose have a large amount of free hydroxyl groups and the surfaces of the microcapsule and the nano-cellulose have electronegativity, the cationic starch is added to change the potential on the surface of the envelope system, so that the system is more stable.
The gradual enveloping process of the nano fibrillated cellulose/microcapsule enveloping system is compared with the process of one-time enveloping microcapsules:
(1) the construction of the disposable microcapsule/nanofibrillated cellulose can not reach the ideal addition amount of the microcapsule, the addition amount can reach the amount of 30-40% w/w, if the microcapsule is added, the system is sticky, and is difficult to be uniformly dispersed through ultrasonic waves and stirring action, so that the enveloping system is not uniformly dispersed, and the microcapsule can not reach the ideal effect in the paper sheet after the subsequent paper forming.
(2) The nanocellulose gradually envelops the microcapsules, so that the addition amount of the microcapsules is higher than that of the microcapsules added at one time. The addition amount can reach 40-55%. The microcapsule/nano-cellulose system added for one time is pretreated and swollen by the lithium acrylate solution, so that the molecular cohesion of an amorphous area is reduced, the nano-fibrillated cellulose is further softened, more free hydroxyl groups and a space net structure are exposed, and the system can further contain the microcapsule by the way. The content of the additive can be further increased by 10-15% on the basis of one-time addition. The microcapsule filling amount of the system is maximized.
The microcapsules reach the maximum enveloping structure in a nanocellulose enveloping system through a step-by-step enveloping process, the microcapsules are tightly enveloped in the nanocellulose through the unique network structure of the nanocellulose, and the filling amount of the microcapsules is increased as much as possible by adopting a mode of filling the microcapsules between layers.
Compared with the prior art, the method has the advantages that
| Amount of filling | Loss of paper-forming microcapsules | |
| Interlayer filling of progressive envelope system in the embodiment | 40-55％ | Close to 0% |
| Disposable envelope system interlayer filling | 30-40％ | Close to 0% |
| Common microcapsule pulp mixing | 10-20％ | 20-30％ |
The microcapsule pre-enveloping system is enveloped by the nano cellulose fiber step by step, so that the filling amount of the microcapsule is far higher than the content of the microcapsule in the paper made by mixing common paper pulp and the microcapsule, and the microcapsule can be fixed in a rich nano cellulose network structure and can be uniformly dispersed among layers. In addition, in the laminating process, due to the abundant net-shaped cross-linking structure of the nano-cellulose and the existence of a large amount of hydroxyl on the surface, a large amount of hydrogen bonds are generated between the upper layer and the lower layer in the laminating process, and the interlayer bonding strength between the two layers is increased.
| Internal bond strength | |
| This patent is packed between envelope system layer step by step | 198-215J/m2 |
| Disposable envelope system interlayer filling | 205-218J/m2 |
| Common double layer composite | 155-175J/m2 |
In the process of enveloping the microcapsules again by the nano-cellulose, through swelling treatment by a lithium acrylate solution, the reduction of the molecular cohesion of the amorphous region of the nano-cellulose in the system is ensured, the system is softened, and more microcapsules can be loaded in the system. The amount of lithium acrylate added and the pretreatment time are very important to control.
Swelling treatment of lithium acrylate at normal temperature, concentration: 1%, 2%, 3%; the treatment time is 5min, 10min and 15 min.
Experiments show that the concentration is 2%, the time is 10min, the secondary enveloping microcapsules obtained by enveloping can achieve the best process effect, and the secondary enveloping microcapsules can achieve about 15%.
Claims (3)
1. The preparation method of the microcapsule paper is characterized by comprising the following steps of:
1) making thin wet paper web with weight of 15-20g/m2 with paper sheet former;
2) the microcapsule enveloping system is added between two pieces of wet paper by an interlayer filling process,
3) preparing high-envelope microcapsule paper by using a squeezing and drying process;
the preparation method of the microcapsule enveloping system comprises the following steps:
21) mixing and stirring the nanofibrillated cellulose and the microcapsule taking the beta-cyclodextrin as the main body; forming a CNF/microcapsule dispersion;
22) at normal temperature, adding 1-3% lithium acrylate solution into the CNF/microcapsule dispersion system for pretreatment for 5-15 min;
23) centrifugally washing the pretreated CNF/microcapsule disperse system to be neutral;
24) and enveloping the microcapsules with solid content of 10-15% in the washed CNF/microcapsule disperse system, and simultaneously assisting ultrasonic waves and stirring for synergistic dispersion.
2. The method for preparing the micro-encapsulated paper as set forth in claim 1, further comprising:
25) adding cationic starch in the process of stirring and ultrasonic cavitation synergistic treatment.
3. The method for preparing the micro-encapsulated paper according to claim 1, wherein the method comprises the following steps:
31) adding 30-40% w/w of microcapsule taking beta-cyclodextrin as main body into nanofibrillated cellulose with solid content of 1-3%, mixing and stirring at the stirring speed of 1500-2000rpm for 20-30 min; simultaneously, uniformly dispersing the mixture by ultrasonic wave synergistic treatment to form a CNF/microcapsule dispersion system;
32) at normal temperature, adding 1-3% lithium acrylate solution into the CNF/microcapsule dispersion system for pretreatment for 5-15 min;
33) centrifugally washing the CNF/microcapsule dispersion system for 4-6 times until the system is washed to be neutral;
34) enveloping the microcapsules with solid content of 10-15% in the washed CNF/microcapsule disperse system, and simultaneously assisting ultrasonic and stirring for synergistic dispersion;
35) stirring the CNF/microcapsule under the condition of keeping the content of the CNF/microcapsule at 3-5% of solid content; the stirring speed is 1500-; carrying out ultrasonic cavitation cooperative treatment; in the process, 0.01-0.03% of cationic starch is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011595790.4A CN112726277B (en) | 2020-12-29 | 2020-12-29 | Preparation method of microcapsule paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011595790.4A CN112726277B (en) | 2020-12-29 | 2020-12-29 | Preparation method of microcapsule paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112726277A true CN112726277A (en) | 2021-04-30 |
| CN112726277B CN112726277B (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011595790.4A Active CN112726277B (en) | 2020-12-29 | 2020-12-29 | Preparation method of microcapsule paper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116492944A (en) * | 2023-06-21 | 2023-07-28 | 云南省农业科学院农产品加工研究所 | Microcapsule wall material and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107142779A (en) * | 2017-06-29 | 2017-09-08 | 苏州安特实业有限公司 | A kind of fire retardant papers based on nano-cellulose whisker and microcapsules and preparation method thereof |
| CN110982091A (en) * | 2019-11-17 | 2020-04-10 | 江南大学 | High-stability cyclodextrin emulsion based on interfacial regularity strategy and preparation method thereof |
| CN112088882A (en) * | 2020-09-04 | 2020-12-18 | 浙大宁波理工学院 | Antibacterial nanocellulose microcapsule and preparation method thereof |
-
2020
- 2020-12-29 CN CN202011595790.4A patent/CN112726277B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107142779A (en) * | 2017-06-29 | 2017-09-08 | 苏州安特实业有限公司 | A kind of fire retardant papers based on nano-cellulose whisker and microcapsules and preparation method thereof |
| CN110982091A (en) * | 2019-11-17 | 2020-04-10 | 江南大学 | High-stability cyclodextrin emulsion based on interfacial regularity strategy and preparation method thereof |
| CN112088882A (en) * | 2020-09-04 | 2020-12-18 | 浙大宁波理工学院 | Antibacterial nanocellulose microcapsule and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116492944A (en) * | 2023-06-21 | 2023-07-28 | 云南省农业科学院农产品加工研究所 | Microcapsule wall material and preparation method and application thereof |
| CN116492944B (en) * | 2023-06-21 | 2023-09-29 | 云南省农业科学院农产品加工研究所 | Microcapsule wall material and preparation method and application thereof |
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| Publication number | Publication date |
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| CN112726277B (en) | 2022-05-10 |
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Effective date of registration: 20231016 Address after: 362261 the third industrial zone, Anhai Town, Jinjiang City, Quanzhou City, Fujian Province Patentee after: FUJIAN HENGAN HYGIENE MATERIAL Co.,Ltd. Address before: 362261 the third industrial zone, Anhai Town, Jinjiang City, Quanzhou City, Fujian Province Patentee before: FUJIAN HENGAN HYGIENE MATERIAL Co.,Ltd. Patentee before: FUJIAN HENGAN HOLDING Co.,Ltd. Patentee before: HENGAN (CHINA) PAPER INDUSTRY Co.,Ltd. |