CN112795155A - Biodegradable film, preparation method thereof and sanitary towel - Google Patents
Biodegradable film, preparation method thereof and sanitary towel Download PDFInfo
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- CN112795155A CN112795155A CN202011623132.1A CN202011623132A CN112795155A CN 112795155 A CN112795155 A CN 112795155A CN 202011623132 A CN202011623132 A CN 202011623132A CN 112795155 A CN112795155 A CN 112795155A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000000203 mixture Substances 0.000 claims abstract description 30
- 229920006167 biodegradable resin Polymers 0.000 claims abstract description 26
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 20
- 238000010096 film blowing Methods 0.000 claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 7
- 238000001125 extrusion Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 229920001896 polybutyrate Polymers 0.000 claims abstract 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000007664 blowing Methods 0.000 claims description 10
- -1 polyethylene Polymers 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 5
- 208000034530 PLAA-associated neurodevelopmental disease Diseases 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract description 2
- 235000010215 titanium dioxide Nutrition 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 10
- 229920000747 poly(lactic acid) Polymers 0.000 description 7
- 239000004626 polylactic acid Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 5
- 238000010008 shearing Methods 0.000 description 4
- 238000005282 brightening Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- PTIXVVCRANICNC-UHFFFAOYSA-N butane-1,1-diol;hexanedioic acid Chemical compound CCCC(O)O.OC(=O)CCCCC(O)=O PTIXVVCRANICNC-UHFFFAOYSA-N 0.000 description 1
- JYLRDAXYHVFRPW-UHFFFAOYSA-N butane-1,1-diol;terephthalic acid Chemical compound CCCC(O)O.OC(=O)C1=CC=C(C(O)=O)C=C1 JYLRDAXYHVFRPW-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/18—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing inorganic materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/26—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/62—Compostable, hydrosoluble or hydrodegradable materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- Engineering & Computer Science (AREA)
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- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Hematology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Biological Depolymerization Polymers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a Chinese herbal medicineThe preparation method of the biodegradable film comprises the following steps: s1 mixing 70-80% of biodegradable resin containing 6-9% of titanium dioxide and 20-30% of CaCO3Heating the powder to 100-120 ℃, and mixing for 3-5 min at a rotating speed of 150-200 r/min to obtain a blend; s2, introducing the blend into a double-screw extruder for extrusion, bracing, cooling and dicing to obtain blown film resin; s3, adding the film blowing resin into a film blowing machine set to perform extrusion, inflation, traction, secondary inflation, cooling, secondary traction and rolling to obtain the biodegradable film. The invention provides a preparation method for preparing a biodegradable film by using biodegradable resin (containing PBAT, PLA and titanium dioxide) as a raw material, and the biodegradable film prepared by the method can be widely applied to the fields of mattresses, operation pads, protective clothing, food outer packages, flexible packages and the like.
Description
Technical Field
The invention relates to the technical field of film product preparation processes, in particular to a biodegradable film, a preparation method thereof and a sanitary towel.
Background
Plastic films have a wide range of applications, such as agriculture, food packaging, sanitary protection articles, etc., and also cause serious environmental pollution, i.e., "white pollution". Therefore, the degradable biodegradable film has wide application prospect, and the company applies for the following products on the same day: a non-air-permeable biodegradable resin and its preparing process are disclosed, which features that the raw material for preparing biodegradable film is prepared from PLA (polylactic acid) and PBAT (the copolymer of butanediol adipate and butanediol terephthalate) and titanium white powder through proportional mixing.
The application aims to provide a preparation method for preparing a biodegradable film by using the PLA and the PBAT as the basis and adding titanium dioxide to prepare biodegradable resin as a raw material.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a preparation method of a biodegradable film, and the biodegradable film is prepared by taking biodegradable resin as a raw material and carrying out a film blowing method.
According to the embodiment of the invention, the preparation method of the biodegradable film comprises the following steps by weight:
s1, mixing 70-80% of biodegradable resin and 20-30% of C by massaCO3Heating the powder to 100-120 deg.C at 15 deg.CMixing for 3-5 min at the rotating speed of 0-200 r/min to obtain a blend, wherein the biodegradable resin contains 6-9% by mass of titanium dioxide;
s2, introducing the blend into a double-screw extruder, and extruding, bracing, cooling and dicing to obtain blown film resin;
s3, adding the film blowing resin into a film blowing machine set, and obtaining the biodegradable film after extrusion, blowing, traction, secondary blowing, cooling, secondary traction and rolling;
wherein the biodegradable resin comprises PLA, PBAT and titanium dioxide.
Furthermore, the feeding temperature of the blend in the S2 is 120-160 ℃, the die head temperature is 160-170 ℃, and the demolding pressure is 3-5 Mpa.
Further, in S3, the feeding temperature of the film blowing resin is 160-170 ℃, the die head temperature is 170-180 ℃, the demolding pressure is 5-8 Mpa, the first blowing ratio is 1.5-2, and the second blowing ratio is 3-4.
Further, the biodegradable resin in S1 is soaked in 75-95% ethanol for 3' 5h, then dried at 60-70 ℃ for 2-3 h, and then dried with CaCO3The powder is subjected to a heat treatment.
Further, C in S1aCO3The powder granularity is 300-500 meshes.
Further, polyethylene wax accounting for 2-5 per mill of the weight of the blend obtained in the step S1 is continuously added into the blend, and then the blend is sheared for 10-20 min at the rotating speed of 2000-3000 r/min. The polyethylene wax can play a role in brightening and brightening, and meanwhile, the integrity and the fluidity of a plastic product can be improved, and the friction between the product and a machine is reduced;
the blend is subjected to high-speed shearing, so that the materials can be mixed more fully, and the polyethylene wax used can be replaced by other brightening agents, such as polypropylene wax and the like.
Further, the mass ratio of PLA, PBAT and titanium dioxide is 75-125: 25: 9.
according to the embodiment of the invention, the biodegradable film is processed by the preparation method.
According to an embodiment of the present invention, there is also provided a sanitary napkin using the biodegradable film as a base film of the sanitary napkin, wherein the base film of the sanitary napkin has a grammage of 25g/m2。
Compared with the prior art, the invention has the following beneficial effects:
the preparation method for preparing the biodegradable film by using the biodegradable resin (containing PBAT, PLA and titanium dioxide) as the raw material is provided, and the biodegradable film prepared by the method can be widely applied to the fields of mattresses, operation pads, protective clothing, food outer packages, flexible packages and the like;
the gram weight of the product is 25g/m2The biodegradable film is about 0.02mm in film thickness, is used for the sanitary towel film, and can be rapidly degraded after the sanitary towel is used and discarded, so that the content is released, the degradation of the content is accelerated, and the environmental pollution caused by the degradation is avoided.
Detailed Description
The technical solution of the present invention is further illustrated by the following examples.
Example 1
The embodiment provides a preparation method of a biodegradable film, which comprises the following steps:
s1 mixing 800g of biodegradable resin containing 9% titanium dioxide and 200g of CaCO3Heating the powder to 120 ℃, and mixing for 3min at the rotating speed of 200r/min to obtain a blend;
s2, adding the blend into a double-screw extruder, extruding, bracing, cooling and dicing to obtain blown film resin, wherein the feeding temperature of the blend is 160 ℃, the die head temperature is 160 ℃, and the die-out pressure is 5 Mpa;
s3, adding the film blowing resin into a film blowing machine set to perform extrusion, inflation, traction, secondary inflation, cooling, secondary traction and rolling to obtain a biodegradable film, wherein the feeding temperature of the film blowing resin is 170 ℃, the die head temperature is 180 ℃, the demolding pressure is 5Mpa, the first inflation ratio is 2, and the second inflation ratio is 4;
in the above step S1Soaking the biodegradable resin in 95% ethanol at 60 deg.C for 3 hr, drying at 3 hr, and mixing with 300 mesh CaCO3Heating the powder;
continuously adding polyethylene wax accounting for 5 per mill of the weight of the blend obtained in the step S1, and then shearing the blend for 10min at the rotating speed of 3000 r/min;
wherein the biodegradable resin comprises the following components in a mass ratio of 125: 25: 9 PLA, PBAT and titanium dioxide.
Example 2
The embodiment provides a preparation method of a biodegradable film, which comprises the following steps:
s1 mixing 750g of biodegradable resin containing 7% titanium dioxide and 250g of CaCO3Heating the powder to 110 ℃, and mixing for 4min at the rotating speed of 180r/min to obtain a blend;
s2, introducing the blend into a double-screw extruder, extruding, bracing, cooling and dicing to obtain blown film resin, wherein the feeding temperature of the blend is 145 ℃, the die head temperature is 165 ℃, and the die-out pressure is 4 Mpa;
s3, adding the film blowing resin into a film blowing machine set to perform extrusion, inflation, traction, secondary inflation, cooling, secondary traction and rolling to obtain a biodegradable film, wherein the feeding temperature of the film blowing resin is 165 ℃, the die head temperature is 175 ℃, the demolding pressure is 6.5Mpa, the first inflation ratio is 1.7, and the second inflation ratio is 3.5;
in the step S1, the biodegradable resin is soaked in 85% ethanol for 4h and then dried, the drying temperature is 65 ℃, the drying time is 2.5h, and the dried biodegradable resin is mixed with C with the granularity of 400 meshesaCO3Heating the powder;
continuously adding polyethylene wax accounting for 4 per mill of the weight of the blend obtained in the step S1, and then shearing the blend for 15min at the rotating speed of 2500 r/min;
wherein the biodegradable resin comprises the following components in a mass ratio of 100: 25: 9 PLA, PBAT and titanium dioxide.
Example 3
The embodiment provides a preparation method of a biodegradable film, which comprises the following steps:
s1 mixing 700g of biodegradable resin containing 6% titanium dioxide and 300g of CaCO3Heating the powder to 100 ℃, and mixing for 5min at the rotating speed of 150r/min to obtain a blend;
s2, adding the blend into a double-screw extruder, extruding, bracing, cooling and dicing to obtain blown film resin, wherein the feeding temperature of the blend is 120 ℃, the die head temperature is 170 ℃, and the die-out pressure is 3 Mpa;
s3, adding the film blowing resin into a film blowing machine set to perform extrusion, inflation, traction, secondary inflation, cooling, secondary traction and rolling to obtain a biodegradable film, wherein the feeding temperature of the film blowing resin is 170 ℃, the die head temperature is 170 ℃, the demolding pressure is 8Mpa, the first inflation ratio is 1.5, and the second inflation ratio is 3;
in the step S1, the biodegradable resin is soaked in 75% ethanol for 5h and then dried, the drying temperature is 70 ℃, the drying time is 2h, and the dried biodegradable resin is mixed with C with the granularity of 500 meshesaCO3Heating the powder;
continuously adding polyethylene wax accounting for 3 per mill of the weight of the blend obtained in the S1, and then shearing the blend for 20min at the rotating speed of 2000 r/min;
wherein the biodegradable resin comprises the following components in a mass ratio of 75: 25: 9 PLA, PBAT and titanium dioxide.
Comparative example 1
The same as example 1 except for the following points, specifically different,
the biodegradable resin in S1 does not contain titanium dioxide.
Comparative example 2
The same as example 1 except for the following points, specifically different,
the blend in S1 was directly subjected to the step S3.
Example 4
The grammage of 25g/m was prepared using the preparation methods of examples 1-3 and comparative examples 1 and 2 above2The biodegradable film is used as a bottom film of the sanitary towel.
25g/m prepared in examples 1 to 3 and comparative examples 1 and 22The biodegradable films of (a) were used for the tests, the test results are given in the following table:
note: the thickness of the film is 0.02-0.023 mm.
The films provided in examples 1-3 and comparative example 2 have relatively uniform grammage at 25g/m2On the left and right, comparative example 1 is smaller and larger, and the gram weight is unqualified, which shows that the addition of titanium dioxide has positive contribution to the gram weight stability of the film;
in terms of strength, all indexes (including 10% tensile strength, tensile strength and elongation at break) of the film strength provided by the embodiments 1-3 are stable, and the strength index of the film is worst in the comparative embodiment 1 and is slightly inferior in the comparative embodiment 2, which shows that the strength index can be improved by adding titanium dioxide, and meanwhile, the strength index can be further improved by performing double-screw treatment once before film blowing;
in the aspect of comfort (embodied by friction coefficients), the dynamic and static friction coefficients of the films provided by the embodiments 1-3 are smaller than those of the comparative embodiments 1 and 2, while the dynamic and static friction coefficients of the comparative embodiments 1 and 2 are equivalent, which shows that the effect of once twin-screw treatment on improving the comfort before film blowing is not obvious, and the comfort is mainly influenced by the addition of titanium dioxide.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. The preparation method of the biodegradable film is characterized by comprising the following steps:
s1, mixing 70-80% of biodegradable resin and 20-30% of C by massaCO3Heating the powder to 100-120 ℃, and mixing for 3-5 min at a rotating speed of 150-200 r/min to obtain a blend, wherein the biodegradable resin contains 6-9% by mass of titanium dioxide;
s2, introducing the blend into a double-screw extruder, and extruding, bracing, cooling and dicing to obtain blown film resin;
s3, adding the film blowing resin into a film blowing machine set, and obtaining the biodegradable film after extrusion, blowing, traction, secondary blowing, cooling, secondary traction and rolling;
wherein the biodegradable resin comprises PLA, PBAT and titanium dioxide.
2. The method for preparing biodegradable film according to claim 1, wherein the feeding temperature of the blend in S2 is 120-160 ℃, the die temperature is 160-170 ℃, and the demolding pressure is 3-5 MPa.
3. The method of claim 1, wherein the blowing temperature of the blowing resin in S3 is 160-170 ℃, the die temperature is 170-180 ℃, the demolding pressure is 5-8 MPa, the first blowing ratio is 1.5-2, and the second blowing ratio is 3-4.
4. The method of claim 1, wherein the biodegradable resin in S1 is first soaked in 75-95% ethanol at 60-70 deg.C for 3-5 h and then dried for 2-3 h, and then dried with CaCO3The powder is subjected to a heat treatment.
5. A dough as claimed in claim 1The preparation method of the biodegradable film is characterized in that C in S1aCO3The powder granularity is 300-500 meshes.
6. The method of claim 1, wherein the polyethylene wax is added to the blend of S1 in an amount of 2-5 wt%, and the blend is sheared at a speed of 2000-3000 r/min for 10-20 min.
7. The preparation method of the biodegradable film as set forth in claim 1, wherein the mass ratio of PLA, PBAT and titanium dioxide is 75-125: 25: 9.
8. a biodegradable film, characterized by being produced by the production method provided in claim 1.
9. A sanitary napkin comprising a biodegradable film according to claim 8.
10. The sanitary napkin as claimed in claim 9, wherein said biodegradable film has a grammage of 25g/m2。
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011623132.1A CN112795155A (en) | 2020-12-30 | 2020-12-30 | Biodegradable film, preparation method thereof and sanitary towel |
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| CN202011623132.1A CN112795155A (en) | 2020-12-30 | 2020-12-30 | Biodegradable film, preparation method thereof and sanitary towel |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325426A (en) * | 1998-10-30 | 2001-12-05 | 旭化成株式会社 | Polyester resin composition and fiber |
| CN1729238A (en) * | 2002-12-18 | 2006-02-01 | 纳幕尔杜邦公司 | The low-friction coefficient thermoplastic compounds that contains filler |
| CN102040814A (en) * | 2010-12-29 | 2011-05-04 | 深圳市科聚新材料有限公司 | Special black master batch for polylactic acid based degradable plastics and preparation method thereof |
| WO2016158736A1 (en) * | 2015-03-27 | 2016-10-06 | 東レ株式会社 | Biodegradable white film and manufacturing method therefor |
| CN106633543A (en) * | 2017-01-06 | 2017-05-10 | 南京肯特复合材料股份有限公司 | Nanometer TiO2-modified polytrifluoroethylene and preparation method thereof |
| WO2018056539A1 (en) * | 2016-09-23 | 2018-03-29 | 롯데정밀화학 주식회사 | Biodegradable resin composition and biodegradable article manufactured therefrom |
| CN109082086A (en) * | 2018-07-12 | 2018-12-25 | 安徽聚美生物科技有限公司 | A kind of preparation method of the high ventilated membrane of polylactic acid |
| CN109229812A (en) * | 2018-09-06 | 2019-01-18 | 吉林中粮生化有限公司 | A kind of three-layer co-extruded complete biodegradable express packaging bag and preparation method thereof |
| CN109897381A (en) * | 2019-03-26 | 2019-06-18 | 奥世达弹性体(深圳)有限公司 | A kind of high tenacity is breathed freely thermoplastic elastomer thin film and preparation method thereof |
| CN110003626A (en) * | 2019-04-28 | 2019-07-12 | 兰州鑫银环橡塑制品有限公司 | A kind of resistance to intensive ultraviolet whole life cycle design PP Pipe Compound and preparation method thereof |
| JP2019127545A (en) * | 2018-01-25 | 2019-08-01 | 三井化学株式会社 | Polyester resin composition for reflection material and reflection material |
-
2020
- 2020-12-30 CN CN202011623132.1A patent/CN112795155A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325426A (en) * | 1998-10-30 | 2001-12-05 | 旭化成株式会社 | Polyester resin composition and fiber |
| CN1729238A (en) * | 2002-12-18 | 2006-02-01 | 纳幕尔杜邦公司 | The low-friction coefficient thermoplastic compounds that contains filler |
| CN102040814A (en) * | 2010-12-29 | 2011-05-04 | 深圳市科聚新材料有限公司 | Special black master batch for polylactic acid based degradable plastics and preparation method thereof |
| WO2016158736A1 (en) * | 2015-03-27 | 2016-10-06 | 東レ株式会社 | Biodegradable white film and manufacturing method therefor |
| WO2018056539A1 (en) * | 2016-09-23 | 2018-03-29 | 롯데정밀화학 주식회사 | Biodegradable resin composition and biodegradable article manufactured therefrom |
| CN106633543A (en) * | 2017-01-06 | 2017-05-10 | 南京肯特复合材料股份有限公司 | Nanometer TiO2-modified polytrifluoroethylene and preparation method thereof |
| JP2019127545A (en) * | 2018-01-25 | 2019-08-01 | 三井化学株式会社 | Polyester resin composition for reflection material and reflection material |
| CN109082086A (en) * | 2018-07-12 | 2018-12-25 | 安徽聚美生物科技有限公司 | A kind of preparation method of the high ventilated membrane of polylactic acid |
| CN109229812A (en) * | 2018-09-06 | 2019-01-18 | 吉林中粮生化有限公司 | A kind of three-layer co-extruded complete biodegradable express packaging bag and preparation method thereof |
| CN109897381A (en) * | 2019-03-26 | 2019-06-18 | 奥世达弹性体(深圳)有限公司 | A kind of high tenacity is breathed freely thermoplastic elastomer thin film and preparation method thereof |
| CN110003626A (en) * | 2019-04-28 | 2019-07-12 | 兰州鑫银环橡塑制品有限公司 | A kind of resistance to intensive ultraviolet whole life cycle design PP Pipe Compound and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 凌新龙等: "聚乳酸的改性研究进展及应用", 《成都纺织高等专科学校学报》 * |
| 杨柳等: "双增PLA/PBAT/TiO_2复合材料的制备及性能研究", 《塑料科技》 * |
| 葛世荣等: "纳米TiO_2和SiO_2填充尼龙的摩擦磨损行为", 《摩擦学学报》 * |
| 马建平: "全消光聚酯长丝研制", 《合成技术及应用》 * |
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