CN108797219B - Aluminum foil paper and preparation method thereof - Google Patents
Aluminum foil paper and preparation method thereof Download PDFInfo
- Publication number
- CN108797219B CN108797219B CN201810824279.3A CN201810824279A CN108797219B CN 108797219 B CN108797219 B CN 108797219B CN 201810824279 A CN201810824279 A CN 201810824279A CN 108797219 B CN108797219 B CN 108797219B
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- aluminum
- coating
- foil paper
- antibacterial
- siloxane
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- 239000011888 foil Substances 0.000 title claims abstract description 70
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 62
- 239000011248 coating agent Substances 0.000 claims abstract description 62
- 238000000576 coating method Methods 0.000 claims abstract description 62
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 239000003960 organic solvent Substances 0.000 claims abstract description 17
- 239000000654 additive Substances 0.000 claims abstract description 16
- 230000000996 additive effect Effects 0.000 claims abstract description 16
- 239000003054 catalyst Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 16
- -1 polysiloxane Polymers 0.000 claims abstract description 16
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 14
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 11
- 239000011247 coating layer Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000003618 dip coating Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 235000013305 food Nutrition 0.000 abstract description 7
- 239000005003 food packaging material Substances 0.000 abstract description 2
- 235000021022 fresh fruits Nutrition 0.000 abstract description 2
- 230000001580 bacterial effect Effects 0.000 abstract 1
- 239000002390 adhesive tape Substances 0.000 description 7
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 241000191967 Staphylococcus aureus Species 0.000 description 4
- 241000588724 Escherichia coli Species 0.000 description 3
- 239000004599 antimicrobial Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 241000193755 Bacillus cereus Species 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- 239000004971 Cross linker Substances 0.000 description 2
- JGSARLDLIJGVTE-MBNYWOFBSA-N Penicillin G Chemical compound N([C@H]1[C@H]2SC([C@@H](N2C1=O)C(O)=O)(C)C)C(=O)CC1=CC=CC=C1 JGSARLDLIJGVTE-MBNYWOFBSA-N 0.000 description 2
- 241000589517 Pseudomonas aeruginosa Species 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229910018191 Al—Fe—Si Inorganic materials 0.000 description 1
- 241000222120 Candida <Saccharomycetales> Species 0.000 description 1
- 241001515917 Chaetomium globosum Species 0.000 description 1
- 241001299817 Dictamnus Species 0.000 description 1
- 241000194033 Enterococcus Species 0.000 description 1
- RJQXTJLFIWVMTO-TYNCELHUSA-N Methicillin Chemical compound COC1=CC=CC(OC)=C1C(=O)N[C@@H]1C(=O)N2[C@@H](C(O)=O)C(C)(C)S[C@@H]21 RJQXTJLFIWVMTO-TYNCELHUSA-N 0.000 description 1
- 229930182555 Penicillin Natural products 0.000 description 1
- 241000607142 Salmonella Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 229960003085 meticillin Drugs 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 235000021485 packed food Nutrition 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229940049954 penicillin Drugs 0.000 description 1
- 229920000548 poly(silane) polymer Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 229920005573 silicon-containing polymer Polymers 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/18—Paper- or board-based structures for surface covering
- D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
- D21H27/26—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures
- D21H27/28—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures treated to obtain specific resistance properties, e.g. against wear or weather
Landscapes
- Paper (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to the field of food packaging materials, in particular to food-grade aluminum foil paper and a preparation method thereof. In order to improve the fresh-keeping effect of the food packaged by the aluminum-foil paper, the invention provides a method for preparing the aluminum-foil paper, which comprises the following steps: preparing an antibacterial coatingThe bacterial coating is formed by mixing polysiloxane fluid, siloxane catalyst, siloxane cross-linking agent, siloxane adhesion additive, inorganic antibacterial agent and organic solvent; coating the prepared antibacterial coating on an aluminum foil to form an antibacterial coating layer, wherein the solid content of the antibacterial coating on the aluminum foil paper is 0.2-1.5g/m2(ii) a And heating and baking the aluminum foil coated with the antibacterial coating until the antibacterial coating layer is completely cured. The preparation method is simple and easy to operate, and the prepared aluminum-foil paper has an antibacterial function and can effectively improve the fresh-keeping fresh fruits of the food packaged by the aluminum-foil paper.
Description
Technical Field
The invention relates to the field of food packaging materials, in particular to food-grade aluminum foil paper and a preparation method thereof.
Background
At present, most of aluminum foils for packaging food which are common in the market are made of aluminum alloy. For example, 8011 aluminum alloy is an aluminum alloy to which Al-Fe-Si elements are added. The aluminum foil made of the aluminum alloy has clean surface and uniform color without specks and pinholes, but when the aluminum foil is used for packaging food, the packaged food is easily polluted by bacteria, and the fresh-keeping effect of the food is influenced.
Disclosure of Invention
In order to improve the fresh-keeping effect of the food packaged by the aluminum-foil paper, the invention provides a method for preparing the aluminum-foil paper, which comprises the following steps:
step S1, preparing an antibacterial coating, wherein the antibacterial coating is formed by mixing polysiloxane fluid, a siloxane catalyst, a siloxane cross-linking agent, a siloxane adhesion additive, an inorganic antibacterial agent and an organic solvent;
step S2, coating the antibacterial coating prepared in the step S1 on an aluminum foil to form an antibacterial coating layer, wherein the solid content of the antibacterial coating on the aluminum foil paper is 0.2-1.5g/m2；
And S3, heating and baking the aluminum foil coated with the antibacterial coating in the step S3 until the antibacterial coating is completely cured.
The preparation method is simple and easy to operate, and the prepared aluminum-foil paper has an antibacterial function and can effectively improve the fresh-keeping fresh fruits of the food packaged by the aluminum-foil paper.
Preferably, in the step S1, in the antibacterial coating, the weight parts of polysiloxane fluid is 4800-14300, the weight parts of siloxane catalyst is 30-1700, the weight parts of siloxane crosslinking agent is 17-1200, the weight parts of siloxane adhesion additive is 17-1200, the weight parts of inorganic antibacterial agent is 1000-2500, and the weight parts of organic solvent is 82000-90000.
Preferably, in preparing the antibacterial coating material, the polysiloxane fluid, the siloxane catalyst, the siloxane crosslinking agent, the siloxane attachment additive, and the inorganic antibacterial agent are uniformly dispersed in the organic solvent by stirring with a stirrer. The stirring of the stirrer can improve the efficiency of preparing the antibacterial coating, and can ensure that the polysiloxane fluid, the siloxane catalyst, the siloxane cross-linking agent, the siloxane adhesion additive and the inorganic antibacterial agent can be uniformly dispersed in the organic solvent, thereby improving the antibacterial performance of the antibacterial coating.
Preferably, in the step S2, the coating operation may be performed by roll coating, dip coating, brush coating, and spray coating.
Preferably, the solid content of the antibacterial coating on the aluminum foil paper is 1.0g/m2。
Preferably, in the step S3, the baking temperature ranges from 135 ℃ to 268 ℃, and the baking time ranges from 3S to 10S. Therefore, the prepared antibacterial coating on the aluminum foil paper is uniform in coating, good in drying effect and high in drying speed.
Preferably, when the aluminum foil coated with the antibacterial coating is heated and baked, a drying tunnel can be formed by arranging heating equipment, and the aluminum foil is driven to pass through the drying tunnel by roller equipment. Further, the heating device may be selected from an infrared heater, a heating roller, an oven, or an induction heater. Therefore, the drying effect and the drying speed of the method for preparing the aluminum-foil paper can be further improved, the drying cost is reduced, and the preparation cost is further reduced.
In addition, the invention also provides the aluminum-foil paper, and the aluminum-foil paper is prepared by any one of the methods for preparing the aluminum-foil paper.
Drawings
Detailed Description
The method for preparing aluminum-foil paper and the prepared aluminum-foil paper of the present invention will be described in detail with reference to the following specific examples.
Example 1
Firstly, preparing an antibacterial coating which is formed by mixing polysiloxane fluid, siloxane catalyst, siloxane cross-linking agent, siloxane adhesion additive, inorganic antibacterial agent and organic solvent, wherein the weight of the polysiloxane fluid8436 parts of siloxane catalyst, 17 parts of siloxane crosslinking agent, 17 parts of siloxane adhesion additive, 1500 parts of inorganic antibacterial agent and 90000 parts of organic solvent. The polysilane fluid may be selected from reactive silicone-containing polymers produced by Dow Corning Company, for example
DC SL200 and
SL 7362. The silicone polymer is a polymer base, i.e., produced by the Dow Corning Company
SL7688, the polymer main agent is a colorless transparent fluid, the specific gravity at 20 ℃ is 0.96Kg/m3And a viscosity at 25 ℃ of 40000 mPa.s. The organic solvent can be esters, ketones or solvent oil. When the polysiloxane fluid, the siloxane catalyst, the siloxane crosslinking agent, the siloxane attachment additive, the inorganic antibacterial agent, and the organic solvent are mixed, stirring may be performed using a stirrer so that the polysiloxane fluid, the siloxane catalyst, the siloxane crosslinking agent, the siloxane attachment additive, and the inorganic antibacterial agent are uniformly dispersed in the organic solvent. Therefore, the stirring of the stirrer can improve the efficiency of preparing the antibacterial coating, and simultaneously can ensure that the polysiloxane fluid, the siloxane catalyst, the siloxane cross-linking agent, the siloxane adhesion additive and the inorganic antibacterial agent can be uniformly dispersed in the organic solvent, thereby improving the antibacterial performance of the antibacterial coating. In the specific preparation of the antibacterial coating material, the stirring time of the stirrer is generally set to 30 minutes, but may be set as needed.
Then, the prepared antibacterial coating is coated on the aluminum foil to form an antibacterial coating layer, and the solid content of the antibacterial coating on the aluminum foil paper is 0.2-1.5g/m2. When the antibacterial coating is coated, the coating can be finished by adopting a roller coating mode, a soaking coating mode, a painting coating mode and a spraying coating modeAnd (4) forming a coating operation. In addition, the solid content of the antibacterial coating on the aluminum foil paper can be preferably 1.0g/m2. Therefore, the preservation effect of the prepared aluminum-foil paper can be effectively ensured, and the use amount of the antibacterial coating can be reduced, so that the preparation cost of the aluminum-foil paper is reduced.
And finally, heating and baking the aluminum foil coated with the antibacterial coating until the antibacterial coating layer is completely cured. Preferably, when the aluminum-foil paper coated with the antibacterial coating is heated and baked, the baking temperature is 135-268 ℃, and the baking time is 3-10s, so that the antibacterial coating on the prepared aluminum-foil paper is uniformly coated, the baking effect is good, and the baking speed is high. The specific baking temperature and baking time can be determined according to the solid content of the antibacterial coating on the aluminum-foil paper, for example, when the solid content of the antibacterial coating on the aluminum-foil paper is 0.2g/m2Meanwhile, the baking temperature can be set to be 135 ℃, and the baking time can be set to be 3 s; when the solid content of the antibacterial coating on the aluminum foil paper is 1g/m2Meanwhile, the baking temperature can be set to 198 ℃, and the baking time can be set to 5.4 s; when the solid content of the antibacterial coating on the aluminum foil paper is 1.5g/m2In this case, the baking temperature may be set to 268 ℃ and the baking time may be set to 10 seconds. In addition, when the aluminum foil paper coated with the antibacterial coating is heated and baked, a drying tunnel can be formed by arranging heating equipment, the roller equipment is used for driving the aluminum foil paper to pass through the drying tunnel, and when the roller equipment drives the aluminum foil paper to pass through the drying tunnel, the rotation speed of the roller equipment can be determined according to baking time, namely the speed of the aluminum foil paper passing through the drying tunnel is determined, and in addition, an infrared heater, a heating roller, an oven or an induction heater can be selected as the heating equipment to be arranged in the drying tunnel. Therefore, the drying effect and the drying speed of the method for preparing the aluminum-foil paper can be further improved, the drying cost is reduced, and the preparation cost is further reduced.
Example 2
Compared with example 1, the antibacterial coating prepared in this example comprises the following components in parts by weight: 4800 parts by weight polysiloxane fluid, 1700 parts by weight siloxane catalyst, 1200 parts by weight siloxane crosslinker, 1200 parts by weight siloxane adhesion additive, 2500 parts by weight inorganic antimicrobial agent, and 88600 parts by weight organic solvent.
Example 3
Compared with example 1, the antibacterial coating prepared in this example comprises the following components in parts by weight: 14300 parts by weight of polysiloxane fluid, 60 parts by weight of silicone catalyst, 40 parts by weight of silicone crosslinker, 35 parts by weight of silicone adhesion additive, 1000 parts by weight of inorganic antimicrobial agent, and 84565 parts by weight of organic solvent.
Example 4
Compared with example 1, the antibacterial coating prepared in this example comprises the following components in parts by weight: 14300 parts by weight of polysiloxane fluid, 300 parts by weight of silicone catalyst, 300 parts by weight of silicone cross-linking agent, 600 parts by weight of silicone adhesion additive, 2500 parts by weight of inorganic antimicrobial agent, 82000 parts by weight of organic solvent.
The tape test was performed on the aluminum foil paper prepared in the above example: firstly, an adhesive tape is transversely pasted on the antibacterial coating layer on the aluminum foil paper to be flat, and the surface of the adhesive tape is pressed by hand to enable the adhesive tape to be firmly pasted; then, the glass adhesive tape is quickly peeled towards the direction of an angle of 45 degrees, and the strength and speed when the adhesive tape is peeled are based on that the aluminum foil paper and the adhesive tape are not torn; the test result of the adhesive tape is checked, so that the antibacterial coating layer of the aluminum foil paper prepared by the embodiment does not fall off, and the test is qualified.
The aluminium foil papers prepared in the above examples were subjected to an antibacterial test, and the minimum development inhibitory concentrations (MIC) for the different strains are shown in Table 1.
TABLE 1
| Test strains | Mic(ppm) |
| Bacillus cereus (B.cereus)ATCC1178) spores | 125 |
| Salmonella (IF03163) | 125 |
| Escherichia coli (IF03301) | 62.5 |
| Pseudomonas aeruginosa | 62.5 |
| Staphylococcus aureus (ATCC6538P) | 250 |
| Enterococcus (ATCC8043) | 125 |
| Lactic acid bacteria (ATCC7468) | 250 |
| Enterohemorrhagic Escherichia coli (laboratory isolate) | 125 |
| Candida (IF01594) | 250 |
| Leaven (IF01594) | 250 |
| Heijungycin (IF04407) | 500 |
| Chaetomium globosum (ATCC6205) | 500 |
| Penicillin (IF06345) | 500 |
| Dictamnus (IF06202) | 500 |
Note: the minimum development concentration represents the minimum concentration of the antimicrobial substance to inhibit microorganisms, and the unit ppm represents the concentration per million; the lower the concentration value, the better the antibacterial performance of the aluminum foil paper.
The antibacterial rate of the aluminum foil paper prepared by the method for preparing the aluminum foil paper on Escherichia coli and staphylococcus aureus is more than 99%.
Resistance acquisition experiments were performed on the aluminum-foil papers prepared in the above examples, and the resistances of staphylococcus aureus, MRSA (methicillin-resistant staphylococcus aureus) and pseudomonas aeruginosa of the aluminum-foil papers prepared by the method for preparing aluminum-foil papers of the present invention were measured as shown in table 2 below.
TABLE 2
As shown in Table 2, the test results show that the aluminum-foil paper prepared by the method of the present invention has an obvious virus-inhibiting effect.
Claims (8)
1. A method of making aluminum-foil paper, comprising the steps of:
step S1, preparing an antibacterial coating, wherein the antibacterial coating is formed by mixing polysiloxane fluid, a siloxane catalyst, a siloxane cross-linking agent, a siloxane adhesion additive, an inorganic antibacterial agent and an organic solvent; in the antibacterial coating, the weight part of polysiloxane fluid is 4800-14300, the weight part of siloxane catalyst is 30-1700, the weight part of siloxane cross-linking agent is 17-1200, the weight part of siloxane adhesion additive is 17-1200, the weight part of inorganic antibacterial agent is 1000-2500, and the weight part of organic solvent is 82000-90000;
step S2, coating the antibacterial coating prepared in the step S1 on an aluminum foil to form an antibacterial coating layer, wherein the solid content of the antibacterial coating on the aluminum foil paper is 0.2-1.5g/m2；
And S3, heating and baking the aluminum foil coated with the antibacterial coating in the step S3 until the antibacterial coating is completely cured.
2. The method of claim 1, wherein the polysiloxane fluid, the siloxane catalyst, the siloxane crosslinking agent, the siloxane attachment additive, and the inorganic antibacterial agent are uniformly dispersed in the organic solvent by stirring with a stirrer during the preparation of the antibacterial coating.
3. The method of claim 1 or 2, wherein in step S2, the coating operation is performed by roll coating, dip coating, brush coating, and spray coating.
4. The method of claim 3, wherein the antibacterial coating has a solid content of 1.0g/m on the aluminum-foil paper2。
5. The method of claim 1 or 2, wherein in the step S3, the baking temperature is 135-268 ℃ and the baking time is 3-10S.
6. The method for preparing the aluminum-foil paper as claimed in claim 5, wherein when the aluminum-foil paper coated with the antibacterial coating is heated and baked, a drying tunnel is formed by arranging a heating device, and the aluminum-foil paper is driven to pass through the drying tunnel by a roller device.
7. The method of claim 6, wherein the heating device is selected from the group consisting of an infrared heater, a heated roller, an oven, and an induction heater.
8. An aluminum-foil paper, characterized in that the aluminum-foil paper is prepared by the method for preparing aluminum-foil paper according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810824279.3A CN108797219B (en) | 2018-07-25 | 2018-07-25 | Aluminum foil paper and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810824279.3A CN108797219B (en) | 2018-07-25 | 2018-07-25 | Aluminum foil paper and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108797219A CN108797219A (en) | 2018-11-13 |
| CN108797219B true CN108797219B (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810824279.3A Active CN108797219B (en) | 2018-07-25 | 2018-07-25 | Aluminum foil paper and preparation method thereof |
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| Country | Link |
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| CN (1) | CN108797219B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112474239A (en) * | 2019-09-12 | 2021-03-12 | 上海科茂药用包装材料有限公司 | Aluminum foil for cake support |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1872927B (en) * | 2005-05-31 | 2010-04-28 | 台湾道康宁股份有限公司 | Polysiloxane anti-adhesion coating composition |
| GB0616021D0 (en) * | 2006-08-14 | 2006-09-20 | Dow Corning | Silicone release coating compositions |
| CN103434214B (en) * | 2013-09-23 | 2016-03-16 | 上海海顺新型药用包装材料股份有限公司 | A kind of antibiosis and self-cleaning PTP aluminium foil and preparation method thereof |
| CN103726402B (en) * | 2014-01-07 | 2016-02-10 | 楚雄市华丽包装实业有限责任公司 | A kind of cigarette aluminium-foil paper hydrophilic antimicrobial coating |
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Effective date of registration: 20240304 Address after: 332000 in Hancheng Science and Technology Industrial Park, Yanjiang Industrial Base, Lianxi District, Jiujiang City, Jiangxi Province Patentee after: Jiangxi Kemao Pharmaceutical New Materials Co.,Ltd. Country or region after: China Address before: 201900 building 16, 198 Changjian Road, Baoshan District, Shanghai Patentee before: SHANGHAI KEMAO MEDICINAL PACKAGING MATERIAL Co.,Ltd. Country or region before: China |