CN112223796A - Preparation method of PLA photosynthetic environment-friendly degradable adhesive film - Google Patents
Preparation method of PLA photosynthetic environment-friendly degradable adhesive film Download PDFInfo
- Publication number
- CN112223796A CN112223796A CN202010908625.3A CN202010908625A CN112223796A CN 112223796 A CN112223796 A CN 112223796A CN 202010908625 A CN202010908625 A CN 202010908625A CN 112223796 A CN112223796 A CN 112223796A
- Authority
- CN
- China
- Prior art keywords
- adhesive film
- pla
- heating
- environment
- friendly degradable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J105/00—Adhesives based on polysaccharides or on their derivatives, not provided for in groups C09J101/00 or C09J103/00
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/04—Polyesters derived from hydroxycarboxylic acids
- B29K2067/046—PLA, i.e. polylactic acid or polylactide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2405/00—Presence of polysaccharides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/04—Presence of homo or copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
Abstract
The invention discloses a preparation method of a PLA photosynthetic environment-friendly degradable adhesive film, wherein the raw materials are environment-friendly materials which can be degraded, so that the pollution can be effectively reduced, and the environment-friendly property of a finished product can be improved. Impurity screening is carried out after heating and fusing, and impurities in the mixture are filtered, so that the quality of the adhesive film is ensured. The extrusion blow-molded adhesive film is subjected to rapid cooling, heating softening and rapid cooling to obtain a shrinkage adhesive film with better toughness, so that the toughness of the adhesive film is improved, the shrinkage rate of the adhesive film is improved, the technical problems of insufficient toughness and low shrinkage rate of the adhesive film are effectively solved, the whole preparation process is simple and easy to control, the cost is low, and the prepared adhesive film is environment-friendly and degradable.
Description
Technical Field
The invention belongs to the field of printing, and particularly relates to a preparation method of a PLA photosynthetic environment-friendly degradable adhesive film.
Background
Polylactic acid (PLA) is a novel bio-based and renewable biodegradable material, and is prepared from starch raw materials provided by renewable plant resources (such as corn, cassava and the like). The starch raw material is saccharified to obtain glucose, the glucose and certain strains are fermented to prepare high-purity lactic acid, and the polylactic acid with certain molecular weight is synthesized by a chemical synthesis method. The biodegradable plastic has good biodegradability, can be completely degraded by microorganisms in the nature under specific conditions after being used, finally generates carbon dioxide and water, does not pollute the environment, is very beneficial to environmental protection, and is a well-known environment-friendly material. The adhesive film is a film product with or without release paper, and can be conveniently operated continuously or intermittently. Can be widely used for bonding various fabrics, paper, high polymer materials and metals.
With the progress of printing technology and the requirements related to environmental protection, glue films prepared from PVC materials are gradually forbidden to be used, and various environmental protection materials such as OPS (oriented polystyrene), PET (polyethylene terephthalate), PLA (polylactide, commonly known as polylactic acid) are developed to replace PVC materials to become mainstream. However, the toughness of the adhesive film made of the environment-friendly material is not enough, and the shrinkage rate of the adhesive film is influenced.
Disclosure of Invention
The invention provides a preparation method of a PLA photosynthetic environment-friendly degradable adhesive film, which solves the technical problems of insufficient toughness and low shrinkage rate of the adhesive film.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a preparation method of a PLA photosynthetic environment-friendly degradable adhesive film comprises the following steps:
s1, placing the raw material gum, polyethylene and PLA into a heating furnace according to the component ratio of 2:1:1 for heating and fusing, wherein the heating and fusing temperature is 180-200 ℃, and the heating time is 2-3 hours;
s2, after the heating and fusion are finished, screening impurities through a closely-arranged filter screen;
s3, extruding and blowing the fused material with the impurities removed by a blowing forming machine to form a tubular adhesive film, and rolling to form a folding adhesive film;
s4, rapidly cooling to make the folded adhesive film have stronger toughness;
s5, heating and softening the folded adhesive film subjected to rapid cooling at 65-70 ℃, keeping the folded adhesive film in a softened state, and blowing to form a uniform tubular adhesive film;
s6, rapidly cooling the tubular adhesive film obtained in the step S5, and making the tubular adhesive film into a tubular shrinkage adhesive film with better toughness through a rapid cooling mold tube;
s7, rolling and winding the tubular shrinkable adhesive film obtained in the step S6 to obtain the PLA photosynthetic environment-friendly degradable adhesive film.
Further, in the step S4, the rapid cooling is water cooling, and the folded adhesive film is cooled by mainly controlling the water temperature to 5 to 10 ℃ through a cooling water pipe.
Further, in step S6, a hollow cooling water flow passage is provided in the pipe wall of the rapid cooling die pipe, and the temperature of the cooling water flow passage is not higher than 15 ℃. The effects of rapid cooling and temperature control are achieved.
Further, in the step S5, the heating and softening time is 3.5-4.5 h.
In step S2, an auxiliary agent is added to the fused material before the impurities are screened, and the fused material is heated at 85 to 100 ℃ for 1 to 1.5 hours.
Further, the auxiliary agent comprises one or more of a stabilizer, a lubricant, an auxiliary processing agent, a pigment and an impact resistance agent.
Further, the temperature of the fused mass after removing the impurities in the step S3 is 50-70 ℃ before extrusion blow molding, if the temperature does not meet the requirement, the fused mass is heated and stirred until the temperature meets the requirement, and the temperature is kept and the stirring is continued for 15-30 min. The effects of fully fusing the raw materials in the inner part and preventing the mixture from cooling and solidifying are achieved.
The invention achieves the following beneficial effects: the raw materials are environment-friendly materials, and can be degraded, so that the pollution can be effectively reduced, and the environmental protection of the finished product can be improved. Impurity screening is carried out after heating and fusing, and impurities in the mixture are filtered, so that the quality of the adhesive film is ensured. The extrusion blow-molded adhesive film is subjected to rapid cooling, heating softening and rapid cooling to obtain a shrinkage adhesive film with better toughness, so that the toughness of the adhesive film is improved, the shrinkage rate of the adhesive film is improved, the technical problems of insufficient toughness and low shrinkage rate of the adhesive film are effectively solved, the whole preparation process is simple and easy to control, the cost is low, and the prepared adhesive film is environment-friendly and degradable.
Detailed Description
The invention is further described below. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Examples 1,
The embodiment provides a preparation method of a PLA photosynthetic environment-friendly degradable adhesive film, which comprises the following steps:
s1, placing the raw materials of gum, polyethylene and PLA into a heating furnace according to the component ratio of 2:1:1, and heating and fusing at the temperature of 180 ℃ for 3 hours.
And S2, after the heating and fusing are finished, screening impurities by a closely-arranged filter screen.
And S3, measuring the temperature of the fused mass after the impurities are removed to be lower than 50 ℃, heating and stirring the fused mass until the temperature meets the requirement, keeping the temperature for stirring continuously for 30min, keeping the temperature at 60 ℃ for stirring continuously in the embodiment, fully fusing the internal raw materials, and avoiding the mixture from cooling and solidifying. And then extruding and blowing the fused material after removing impurities by a blowing forming machine to form a tubular adhesive film, and rolling to form a folding adhesive film.
S4, controlling the water temperature to be 5 ℃ through a cooling water pipe, cooling the folded glue film, and rapidly cooling the folded glue film to enable the folded glue film to have stronger toughness.
And S5, heating and softening the folded adhesive film subjected to rapid cooling and temperature reduction at 65 ℃ for 3.5h, keeping the folded adhesive film in a softened state, and blowing to form a uniform tubular adhesive film.
S6, rapidly cooling the tubular adhesive film obtained in the step S5, and making the tubular adhesive film into a tubular shrinkage adhesive film with better toughness through a rapid cooling mold tube; the pipe wall of the rapid cooling mould pipe is internally provided with a hollow cooling water flow passage, and the temperature of the cooling water flow passage is not higher than 15 ℃.
S7, rolling and winding the tubular shrinkable adhesive film obtained in the step S6 to obtain the PLA photosynthetic environment-friendly degradable adhesive film.
Examples 2,
A preparation method of a PLA photosynthetic environment-friendly degradable adhesive film comprises the following steps:
s1, placing the raw materials of gum, polyethylene and PLA into a heating furnace according to the component ratio of 2:1:1 for heating and fusing, wherein the heating and fusing temperature is 200 ℃, and the heating time is 2 hours;
and S2, adding auxiliary agents into the fused mass, wherein the auxiliary agents comprise a stabilizer, a lubricant, an auxiliary processing agent, a pigment and an impact resistance agent, the stabilizer, the lubricant, the auxiliary processing agent, the pigment and the impact resistance agent are sequentially added into a heating furnace according to the component ratio of 2:2:1:3:1, the mixture is heated for 1 hour at 100 ℃, and the mixture is stirred and fused by a stirrer in the heating process. And after the heating and fusion are finished, screening impurities by a closely arranged filter screen.
S3, measuring the temperature of the fused material after removing the impurities to be 65 ℃, extruding and blowing the fused material after removing the impurities by a blowing forming machine to form a tubular adhesive film, and then rolling to form a folding adhesive film;
s4, controlling the water temperature to be 5 ℃ through a cooling water pipe, cooling the folded glue film, and rapidly cooling the folded glue film to enable the folded glue film to have stronger toughness.
S5, heating and softening the folded adhesive film after rapid cooling at 70 ℃, wherein the heating and softening time is 4.5h, keeping the folded adhesive film in a softened state, and blowing to form a uniform tubular adhesive film;
s6, rapidly cooling the tubular adhesive film obtained in the step S5, and making the tubular adhesive film into a tubular shrinkage adhesive film with better toughness through a rapid cooling mold tube; the pipe wall of the rapid cooling mould pipe is internally provided with a hollow cooling water flow passage, and the temperature of the cooling water flow passage is not higher than 15 ℃.
S7, rolling and winding the tubular shrinkable adhesive film obtained in the step S6 to obtain the PLA photosynthetic environment-friendly degradable adhesive film.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A preparation method of a PLA photosynthetic environment-friendly degradable adhesive film is characterized by comprising the following steps:
s1, placing the raw material gum, polyethylene and PLA into a heating furnace according to the component ratio of 2:1:1 for heating and fusing, wherein the heating and fusing temperature is 180-200 ℃, and the heating time is 2-3 hours;
s2, after the heating and fusion are finished, screening impurities through a closely-arranged filter screen;
s3, extruding and blowing the fused material with the impurities removed by a blowing forming machine to form a tubular adhesive film, and rolling to form a folding adhesive film;
s4, rapidly cooling to make the folded adhesive film have stronger toughness;
s5, heating and softening the folded adhesive film subjected to rapid cooling at 65-70 ℃, keeping the folded adhesive film in a softened state, and blowing to form a uniform tubular adhesive film;
s6, rapidly cooling the tubular adhesive film obtained in the step S5, and making the tubular adhesive film into a tubular shrinkage adhesive film with better toughness through a rapid cooling mold tube;
s7, rolling and winding the tubular shrinkable adhesive film obtained in the step S6 to obtain the PLA photosynthetic environment-friendly degradable adhesive film.
2. The method for preparing a PLA photosynthetic environment-friendly degradable adhesive film as claimed in claim 1, wherein in the step S4, the rapid cooling is water cooling, and the laminated adhesive film is cooled by controlling the water temperature to 5-10 ℃ mainly through a cooling water pipe.
3. The method for preparing a PLA photosynthetic environment-friendly degradable adhesive film as claimed in claim 1, wherein in the step S6, a hollow cooling water flow channel is arranged in the pipe wall of the rapid cooling mould pipe, and the temperature of the cooling water flow channel is not higher than 15 ℃.
4. The method for preparing a PLA photosynthetic environment-friendly degradable adhesive film according to claim 1, wherein in the step S5, the heating and softening time is 3.5-4.5 h.
5. The method for preparing a PLA photosynthetic environment-friendly degradable adhesive film as claimed in claim 1, wherein in the step S2, an auxiliary agent is added to the fused material before screening impurities, and the mixed material is heated at 85-100 ℃ for 1-1.5 h.
6. The method for preparing a PLA photosynthetic environment-friendly degradable adhesive film as claimed in claim 5, wherein the auxiliary agent comprises one or more of a stabilizer, a lubricant, an auxiliary processing agent, a pigment and an impact resistance agent.
7. The method for preparing a PLA photosynthetic environment-friendly degradable adhesive film as claimed in claim 1, wherein the temperature of the fused material after removing impurities in the step S3 before extrusion and air blowing forming is 50-70 ℃, and if the temperature does not meet the requirement, the mixed material is heated and stirred until the temperature meets the requirement, and the temperature is kept and the stirring is continued for 15-30 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010908625.3A CN112223796A (en) | 2020-09-02 | 2020-09-02 | Preparation method of PLA photosynthetic environment-friendly degradable adhesive film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010908625.3A CN112223796A (en) | 2020-09-02 | 2020-09-02 | Preparation method of PLA photosynthetic environment-friendly degradable adhesive film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112223796A true CN112223796A (en) | 2021-01-15 |
Family
ID=74115827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010908625.3A Pending CN112223796A (en) | 2020-09-02 | 2020-09-02 | Preparation method of PLA photosynthetic environment-friendly degradable adhesive film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112223796A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101590694A (en) * | 2008-05-28 | 2009-12-02 | 杨启赞 | The using environment-friendly material is made improved method for preparing and the device thereof that shrinks glued membrane |
| CN107880323A (en) * | 2017-11-17 | 2018-04-06 | 珠海万博科学服务有限公司 | The preparation method for shrinking glued membrane is made in a kind of environment-friendly materials |
| CN111516354A (en) * | 2020-04-17 | 2020-08-11 | 西诺控股集团有限公司 | Method for manufacturing degradable pollution-free PLA composite membrane |
-
2020
- 2020-09-02 CN CN202010908625.3A patent/CN112223796A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101590694A (en) * | 2008-05-28 | 2009-12-02 | 杨启赞 | The using environment-friendly material is made improved method for preparing and the device thereof that shrinks glued membrane |
| CN107880323A (en) * | 2017-11-17 | 2018-04-06 | 珠海万博科学服务有限公司 | The preparation method for shrinking glued membrane is made in a kind of environment-friendly materials |
| CN111516354A (en) * | 2020-04-17 | 2020-08-11 | 西诺控股集团有限公司 | Method for manufacturing degradable pollution-free PLA composite membrane |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7288060B2 (en) | Manufacturing method for high-magnification polylactic acid foam sheet material | |
| US11926711B2 (en) | TPS/PLA/PBAT blend modified biodegradable resin prepared by using chain extender and preparation method thereof | |
| GB1596976A (en) | Producing amorphous polyester articles | |
| KR20040053172A (en) | Method for producing molded article of aliphatic polyester resin | |
| CN102241862A (en) | Preparation of water resistant polyvinyl alcohol biodegradable film through melt extrusion method | |
| CN104371296B (en) | Poly-methyl ethylene carbonate composition and preparation method thereof | |
| JP2011511102A (en) | Extruded profile article | |
| CN113736129B (en) | Lignin-containing biodegradable polyester composite bead foaming material with high crystallization rate and preparation method thereof | |
| CN101624103A (en) | Method for blowing film and making bag by using full biodegradable material as base material | |
| LU501424B1 (en) | Novel composite biodegradable plastic material for injection molding and preparation method therefor | |
| US20180327589A1 (en) | Composition comprising a mixture of polyesters and thermoplastic starch, having improved film-forming ability | |
| CN104908329A (en) | Preparation method for high-crystallinity bidirectional high-mechanical strength polylactic acid film | |
| CN113045881A (en) | Thermal-shrinkage degradable environment-friendly film material and preparation method and application method thereof | |
| CN112521728A (en) | Blow molding film and preparation process thereof | |
| CN113045882A (en) | Degradable plastic film made of PLA material and production process thereof | |
| CN103087487B (en) | Biodegradable resin and preparation method thereof | |
| CN114573933A (en) | Polyvinyl alcohol film and preparation method thereof | |
| CN112223796A (en) | Preparation method of PLA photosynthetic environment-friendly degradable adhesive film | |
| CN109401227A (en) | Using the PLA/PBAT blending and modifying Biodegradable resin and preparation method thereof of chain extender preparation | |
| CN112358658A (en) | Biodegradable master batch based on peanut shell fibers and preparation method and application thereof | |
| CN110607054A (en) | Environment-friendly tensile film and manufacturing process thereof | |
| CN112143043A (en) | Foaming biodegradable resin and production process thereof | |
| WO2023220007A1 (en) | Sustainable foam | |
| CN113788980B (en) | Pre-swelling continuous extrusion foaming polylactic acid material and preparation method and application thereof | |
| CN114685961B (en) | Modified polylactic acid film material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210115 |
|
| RJ01 | Rejection of invention patent application after publication |