CN113492507A - Intelligent processing method for carbon dioxide copolymer film coating - Google Patents
Intelligent processing method for carbon dioxide copolymer film coating Download PDFInfo
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- CN113492507A CN113492507A CN202010199571.8A CN202010199571A CN113492507A CN 113492507 A CN113492507 A CN 113492507A CN 202010199571 A CN202010199571 A CN 202010199571A CN 113492507 A CN113492507 A CN 113492507A
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- carbon dioxide
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- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 45
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Natural products O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 45
- 229920001577 copolymer Polymers 0.000 title claims abstract description 45
- 238000003672 processing method Methods 0.000 title claims abstract description 14
- 239000007888 film coating Substances 0.000 title claims description 19
- 238000009501 film coating Methods 0.000 title claims description 19
- 239000002994 raw material Substances 0.000 claims abstract description 33
- 238000010030 laminating Methods 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims abstract description 11
- 239000012745 toughening agent Substances 0.000 claims abstract description 11
- 230000009471 action Effects 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 9
- 238000003475 lamination Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000011363 dried mixture Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 239000012258 stirred mixture Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 230000009477 glass transition Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920000704 biodegradable plastic Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- 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
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
- B29C48/31—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
-
- 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
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to an intelligent processing method of a carbon dioxide copolymer laminating film, which comprises the steps of blending a carbon dioxide copolymer raw material with a toughening agent, an end capping agent and a filling agent, modifying the raw material to enable the raw material to be more stable, heating the raw material by utilizing an intelligent laminating extruder in a segmented gradual heating mode, cooling and extruding for forming through the combined action of a traction roller, a pressure roller and a cooling roller on the laminating extruder, wherein the laminating extruder can accurately adjust the temperature, the humidity and the pressure aiming at carbon dioxide copolymers with different molecular weights to obtain a carbon dioxide copolymer diaphragm with excellent quality.
Description
Technical Field
The invention relates to the field of high polymer material laminating processing, in particular to an intelligent processing method for a laminating film of a carbon dioxide copolymer.
Background
The carbon dioxide copolymer is an environment-friendly material, has the characteristics of low resource and energy consumption, low ecological and environmental pollution and high regeneration utilization rate, belongs to the biodegradable plastics, can be completely degraded in natural environment, the film product prepared by using the carbon dioxide copolymer as the raw material has wide application prospect in the field of ordinary packaging and medical field, no matter from environmental protection, or from the perspective of resource recycling, but because of the worldwide problems of instability, low molecular weight and low glass transition temperature of the carbon dioxide copolymer raw material, the adhesive has the defects of sensitivity to temperature, poor softness, low mechanical strength, low tensile strength and the like, so that the adhesive is difficult to process and slow in development speed, the development of the industry is directly influenced, and a plurality of problems are also encountered in the long-time research and development process, such as: leakage points exist at low temperature, bubbles appear at high temperature, and the film laminating machine is seriously started and stopped to waste materials, so that the yield is low.
After a large number of experiments and experiences are summarized, the raw materials are modified, a multifunctional laminating extruder is used for operation, the temperature required by the production process is automatically adjusted according to carbon dioxide copolymers with different molecular weights and different glass transition temperatures, and the indoor temperature and humidity of a production workshop, so that the process flow is shortened, the process stability is improved, and the yield of full-biodegradable material products can be greatly improved.
Disclosure of Invention
The invention aims to provide an intelligent processing method for carbon dioxide copolymer lamination, which improves the yield of carbon dioxide copolymer lamination and solves the problems of difficult lamination and difficult molding.
In order to achieve the above purpose, the following technical scheme is provided:
an intelligent processing method for a carbon dioxide copolymer by film coating comprises the following steps:
A. raw material modification: blending the carbon dioxide copolymer raw material with the toughening agent, the end capping agent and the filler, and mixing and stirring the mixture by a stirrer for 8min at the stirring temperature of 55-67 ℃;
B. drying: and adding the stirred mixture into an oven, wherein the drying temperature is 55-65 ℃, and the drying time is 4-6 h.
C. Film coating: and (2) feeding the dried mixture into a laminating extruder, sequentially passing through four area sections of a feeding section, a plasticizing section, a melting section and a molding section, heating the mixture in the first three area sections in a segmented gradual heating mode, cooling and molding the fourth area section through the combined action of a cooling roller, a pressure roller and a traction roller, and finally extruding a carbon dioxide copolymer membrane from a die opening.
Preferably, the adding amounts of the toughening agent, the end capping agent and the filler in the step A are respectively 2-4%, 0.01-0.85% and 0.1-0.5% of the weight of the carbon dioxide copolymer raw material.
Preferably, the water content of the dried mixture is less than or equal to 0.05 percent, and the air flow rate is more than 0.056 square meter/minka/n.
Preferably, the environment temperature of the laminating extruder in use is 16-28 ℃, and the humidity is 45% + -5%.
Preferably, the film laminating extruder adopts a PLC programmable control system, a charging barrel of the film laminating extruder is provided with a water circulation control system to ensure the accuracy of the temperature control of raw materials in the charging barrel, a mold is provided with an automatic temperature adjusting system and a detecting instrument, and the heating temperature of each section of area and the gap of the mold opening are adjusted according to the actual thickness condition of the film discharged from the mold opening to ensure the uniformity of the thickness of the discharged film.
Preferably, the material in the molding section of the laminating extruder is stretched and cooled to form a film under the actions of traction, extrusion and cooling, the pressure of a pressure roller during extrusion is 5-6Pa, the pressure of a traction roller is 4-5Pa, the gap of a die orifice during extrusion is 0.05-5um, the water temperature in the cooling roller is 30-50 ℃, and the distance from the die orifice to the contact line of the cooling roller and the pressure roller is 50-100 mm.
Preferably, the carbon dioxide copolymer membrane has a thickness of 0.02 ± 0.04% um.
The invention has the beneficial effects that:
1. according to the invention, the toughening agent, the end capping agent and the filler are added to modify the carbon dioxide copolymer raw material, so that the molecular weight and the glass transition temperature of the raw material are improved, the raw material is more stable, and the processing is easier.
2. According to the invention, by using intelligent processing equipment, the environment temperature and humidity and the working temperature and humidity are strictly controlled, the influence of temperature and humidity factors on the forming process is eliminated, and the film coating quality is further ensured.
3. The invention can be suitable for the film coating of carbon dioxide copolymer raw materials with different molecular weights by adjusting and controlling the process of multifunctional equipment, can shorten the process flow, improve the process stability and improve the yield.
Detailed Description
An intelligent processing method for a carbon dioxide copolymer by film coating comprises the following steps:
A. raw material modification: blending the carbon dioxide copolymer raw material with the toughening agent, the end capping agent and the filler, and mixing and stirring the mixture by a stirrer for 8min at the stirring temperature of 55-67 ℃;
B. drying: and adding the stirred mixture into an oven, wherein the drying temperature is 55-65 ℃, and the drying time is 4-6 h.
C. Film coating: and (2) feeding the dried mixture into a laminating extruder, sequentially passing through four area sections of a feeding section, a plasticizing section, a melting section and a molding section, heating the raw material in the first three area sections in a segmented gradual heating mode, cooling and molding the fourth area section through the combined action of a cooling roller, a pressure roller and a traction roller, and finally extruding a carbon dioxide copolymer membrane from a die opening.
Wherein, the addition amounts of the toughening agent, the end capping agent and the filling agent in the step A are respectively 2-4%, 0.01-0.85% and 0.1-0.5% of the weight of the carbon dioxide copolymer raw material.
Wherein the water content of the dried mixture is less than or equal to 0.05 percent, and the air flow is more than 0.056 square meter/minka/n.
Wherein the environmental temperature of the laminating extruder is 16-28 ℃ and the humidity is 45% +/-5% when the laminating extruder is used.
The film laminating extruder adopts a PLC programmable control system, a charging barrel of the film laminating extruder is provided with a water circulation control system to ensure the accuracy of the temperature control of raw materials in the charging barrel, a die is provided with an automatic temperature adjusting system and a detecting instrument, and the heating temperature of each section of area and the gap of the die opening are adjusted according to the actual thickness condition of the film discharged from the die opening to ensure the uniformity of the thickness of the discharged film.
Wherein, the material in the molding section of the laminating extruder is stretched and cooled to form a film under the actions of traction, extrusion and cooling, the pressure of a pressure roller during extrusion is 5-6Pa, the pressure of a traction roller is 4-5Pa, the gap of a die orifice during extrusion is 0.05-5um, the water temperature in the cooling roller is 30-50 ℃, and the distance from the die orifice to the contact line of the cooling roller and the pressure roller is 50-100 mm.
Wherein, the thickness of carbon dioxide copolymer diaphragm 0.02 +/-0.04% um, the degree of consistency that this kind of thickness value can guarantee the diaphragm reduces the colour difference, improves production quality.
Wherein, the raw material modification can improve the molecular weight and the glass transition temperature of the raw material, so that the raw material is more stable and the processing is easier.
Example 1
Taking 20kg of 4 ten thousand molecular weight carbon dioxide copolymer raw material, 400g of toughening agent, 2g of end capping agent and 20g of filling agent, mixing and stirring by a stirrer for 8min at the stirring temperature of 55 ℃, taking out the mixture after stirring, adding the mixture into a drying oven at the set temperature of 55 ℃ for 4h, drying the mixture, wherein the water content after drying is not more than 0.05%, and the air volume is more than 0.056m2The method comprises the following steps of/minka/n, automatically setting technological parameters required by carbon dioxide copolymer film coating of a film coating extruder through a PLC system, adding dried blend into a storage bin after setting, automatically carrying out material loading and film coating production through a vacuum feeding device, enabling the blend to sequentially pass through four area sections of a feeding section, a plasticizing section, a melting section and a forming section, heating the raw materials in the first three area sections in a segmented gradual heating mode, adjusting a temperature automatic adjusting system and a detecting instrument on a mold, adjusting the heating temperature and the gap of a mold opening of each area according to the actual thickness condition of a film discharged from the mold opening to ensure that the thickness of the film is uniform, cooling and forming the film through the combined action of a cooling roller, a pressure roller and a traction roller in the fourth area section, finally extruding a carbon dioxide copolymer film from the mold opening, controlling the environmental temperature of the film coating extruder during use to be 16-28 ℃, humidity is 45% + -5%.
Example 2
Taking 20kg of 6 ten thousand molecular weight carbon dioxide copolymer raw material, 600g of toughening agent, 86g of end capping agent and 60g of filler, mixing and stirring by a stirrer for 8min at a stirring temperature of 61 ℃, taking out the mixture after stirring, adding the mixture into a drying oven at a set temperature of 60 ℃ for 5h, drying the mixture, wherein the water content after drying is not more than 0.05%, and the air volume is more than 0.056m2The method comprises the following steps of/minka/n, automatically setting technological parameters required by carbon dioxide copolymer film coating of a film coating extruder through a PLC system, adding dried blend into a storage bin after setting, automatically carrying out material loading and film coating production through a vacuum feeding device, enabling the blend to sequentially pass through four area sections of a feeding section, a plasticizing section, a melting section and a forming section, heating the raw materials in the first three area sections in a segmented gradual heating mode, adjusting a temperature automatic adjusting system and a detecting instrument on a mold, adjusting the heating temperature and the gap of a mold opening of each area according to the actual thickness condition of a film discharged from the mold opening to ensure that the thickness of the film is uniform, cooling and forming the film through the combined action of a cooling roller, a pressure roller and a traction roller in the fourth area section, finally extruding a carbon dioxide copolymer film from the mold opening, controlling the environmental temperature of the film coating extruder during use to be 16-28 ℃, humidity is 45% + -5%.
Example 3
Taking 20kg of 10 ten thousand molecular weight carbon dioxide copolymer raw material, 800g of toughening agent, 170g of end capping agent and 100g of filler, mixing and stirring by a stirrer for 8min at the stirring temperature of 67 ℃, taking out the mixture after stirring, adding the mixture into a drying oven at the set temperature of 65 ℃ for 6h, drying the mixture, wherein the water content after drying is not more than 0.05%, and the air volume is more than 0.056m2The technological parameters required by carbon dioxide copolymer lamination of a lamination extruder are automatically set through a PLC system, after the setting is finished, the dried blend is added into a storage bin, the vacuum feeding device is used for self-feeding lamination production, the blend sequentially passes through four zones of a feeding zone, a plasticizing zone, a melting zone and a molding zone, the raw material is heated in the first three zones in a segmented gradual heating mode, and the temperature on a mold is adjustedThe automatic temperature adjusting system and the detecting instrument adjust the heating temperature and the die opening gap of each section of area according to the actual thickness condition of the die opening to ensure the uniformity and consistency of the thickness of the film, the temperature reduction and the forming are carried out in the fourth section of area through the combined action of the cooling roller, the pressure roller and the traction roller, finally the carbon dioxide copolymer diaphragm is extruded from the die opening, the environmental temperature of the laminating extruder is controlled between 16 ℃ and 28 ℃, and the humidity is 45% +/-5%.
Claims (7)
1. The intelligent processing method of the carbon dioxide copolymer by film coating is characterized by comprising the following steps:
A. raw material modification: blending the carbon dioxide copolymer raw material with the toughening agent, the end capping agent and the filler, and mixing and stirring the mixture by a stirrer for 8min at the stirring temperature of 55-67 ℃;
B. drying: and adding the stirred mixture into an oven, wherein the drying temperature is 55-65 ℃, and the drying time is 4-6 h.
C. Film coating: and (2) feeding the dried mixture into a laminating extruder, sequentially passing through four area sections of a feeding section, a plasticizing section, a melting section and a molding section, heating the mixture in the first three area sections in a segmented gradual heating mode, cooling and molding the fourth area section through the combined action of a cooling roller, a pressure roller and a traction roller, and finally extruding a carbon dioxide copolymer membrane from a die opening.
2. The intelligent processing method for the carbon dioxide copolymer by film coating according to claim 1, wherein the addition amounts of the toughening agent, the capping agent and the filler in the step A are respectively 2-4%, 0.01-0.85% and 0.1-0.5% of the weight of the carbon dioxide copolymer raw material.
3. The intelligent processing method for the carbon dioxide copolymer by film spraying as claimed in claim 1, wherein the water content of the dried mixture is less than or equal to 0.05%, and the air flow rate is more than 0.056 square meter/minka/n.
4. The intelligent processing method for the carbon dioxide copolymer laminating film according to claim 1, wherein the laminating film extruder is used at an ambient temperature of 16-28 ℃ and a humidity of 45% ± 5%.
5. The intelligent processing method for the carbon dioxide copolymer laminating film according to claim 1, wherein the laminating extruder adopts a PLC programmable control system, a charging barrel of the laminating extruder is provided with a water circulation control system to ensure the accuracy of the temperature control of raw materials in the charging barrel, a mold is provided with an automatic temperature adjusting system and a detecting instrument, the heating temperature of each section of area and the gap of the mold opening are adjusted according to the actual thickness condition of the film discharged from the mold opening, and the thickness of the discharged film is ensured to be uniform.
6. The intelligent processing method of the carbon dioxide copolymer laminating film according to claim 1, wherein the laminating extruder stretches and cools to form the film under the action of traction, extrusion and cooling of materials in a forming section, the pressure of a pressure roller during extrusion is 5-6Pa, the pressure of a traction roller is 4-5Pa, the gap of a die orifice during extrusion is 0.05-5um, the temperature of water in a cooling roller is 30-50 ℃, and the distance between the die orifice and the contact line of the cooling roller and the pressure roller is 50-100 mm.
7. The intelligent processing method for the carbon dioxide copolymer lamination according to claim 1, wherein the thickness of the carbon dioxide copolymer membrane is 0.02 ± 0.04% um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010199571.8A CN113492507A (en) | 2020-03-20 | 2020-03-20 | Intelligent processing method for carbon dioxide copolymer film coating |
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| CN202010199571.8A CN113492507A (en) | 2020-03-20 | 2020-03-20 | Intelligent processing method for carbon dioxide copolymer film coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115494889A (en) * | 2021-10-15 | 2022-12-20 | 义乌市绘海科技有限公司 | Extrusion temperature control system and method for corrugated pipe extruder |
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| 哈伯等: "《现代塑料手册》", 31 March 2003, 中国石化出版社 * |
| 李祖德等: "《塑料加工技术应用手册》", 30 June 1997, 中国物资出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115494889A (en) * | 2021-10-15 | 2022-12-20 | 义乌市绘海科技有限公司 | Extrusion temperature control system and method for corrugated pipe extruder |
| CN115494889B (en) * | 2021-10-15 | 2023-11-17 | 义乌市绘海科技有限公司 | Extrusion temperature control system and method for corrugated pipe extruder |
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