CN113478771A - Production process of nano heat-insulating EVA intermediate film - Google Patents
Production process of nano heat-insulating EVA intermediate film Download PDFInfo
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- CN113478771A CN113478771A CN202110593806.6A CN202110593806A CN113478771A CN 113478771 A CN113478771 A CN 113478771A CN 202110593806 A CN202110593806 A CN 202110593806A CN 113478771 A CN113478771 A CN 113478771A
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- Prior art keywords
- drying
- mixture
- plasticizing
- dehumidification
- temperature
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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
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
-
- 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
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92209—Temperature
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92323—Location or phase of measurement
- B29C2948/92447—Moulded article
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the field of EVA film production, in particular to a production process of a nano heat-insulating EVA intermediate film, which aims at the problem that the dehumidification effect is inconvenient to control in the existing dehumidification step, and provides the following scheme, which comprises the following steps: s1: metering the raw materials, and then mixing to obtain a mixture A; s2: weighing the mixture A, measuring the humidity of the mixture A, and recording the weighing and measuring data; s3: heating, dehumidifying and drying the mixture A, and recording the time consumed by dehumidifying and drying; s4: extracting the normal time required for dehumidification and drying from a database according to the weight of the mixture A; s5: comparing the extraction time with the time recorded in S3, and analyzing to obtain the dehumidification and drying efficiency; s6: the invention can control the dehumidification drying effect and the cooling efficiency and has simple process.
Description
Technical Field
The invention relates to the technical field of EVA film production, in particular to a production process of a nanometer heat-insulating EVA intermediate film.
Background
The EVA film is also called as an environment-friendly film, is a film produced by extruding EVA raw materials through tape casting, is a new generation of green environment-friendly degradable material, has the characteristics of biodegradability, no harm to the environment when being discarded or burnt, light specific weight and density of about 0.93, no odor, no heavy metal, no phthalate, high transparency, softness, toughness, super-strong low temperature resistance (-70 ℃), water resistance, salt and other substances, high heat resistance and the like, and the thickness of the EVA film is 0.08mm-3.0mm, and is mainly used for articles for daily use: umbrellas, raincoats, western-style clothes coats, eye shields, various tablecloths, shower caps, shower curtains, water bags, ice bags, tablecloths and the like. A sanitary article: medical operation clothes, special packages for medical treatment and medicinal materials, wrapping and packaging of food, and the like. Packaging the product: dust-proof cover for computer and electric appliance, soft package for cosmetics, shopping bag, gift bag, file folder, file bag, etc. Fashion packaging: handbag, cosmetics bag, advanced stationery, environmental protection saliva shoulder, wardrobe, fishing bag, case and bag etc. EVA membrane production probably divide into following step: mixing materials, dehumidifying, plasticizing, extruding and cooling.
In the prior art, when a dehumidification step is carried out, the dehumidification effect is not convenient to control, so that a production process of a nanometer heat-insulation EVA intermediate film is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the problem that the dehumidification effect is inconvenient to control in the dehumidification step in the prior art, and provides a production process of a nano heat-insulating EVA intermediate film.
In order to achieve the purpose, the invention adopts the following technical scheme:
a production process of a nanometer heat-insulating EVA intermediate film comprises the following steps:
s1: metering the raw materials, and then mixing to obtain a mixture A;
s2: weighing the mixture A, measuring the humidity of the mixture A, and recording the weighing and measuring data;
s3: heating, dehumidifying and drying the mixture A, and recording the time consumed by dehumidifying and drying;
s4: extracting the normal time required for dehumidification and drying from a database according to the weight of the mixture A;
s5: comparing the extraction time with the time recorded in S3, and analyzing to obtain the dehumidification and drying efficiency;
s6: plasticizing the composition subjected to dehumidification and drying at high temperature, and then melting and extruding by using an extruder;
s7: and cooling the extruded material to prepare the EVA film, and rolling and packaging the EVA film.
Preferably, in the step S1, the raw materials are metered and then mixed, the mixing time is 10-20min, the mixing speed is 50-100r/min, and the mixing temperature is 40-60 ℃, so that the mixture A is prepared.
Preferably, in the step S6, the composition after being dehumidified and dried is plasticized at a high temperature, and then is melt-extruded by using an extruder, wherein the plasticizing time is 20-30min, and the plasticizing temperature is 200-240 ℃.
Preferably, in S7, the temperature detector is used to detect the temperature of the cooled material, the detected data is recorded, the recorded data is compared with the preset data, and when the recorded data is greater than the preset data, the cooling step needs to be adjusted.
Preferably, in S6, the dehumidified and dried composition is placed into a plasticizing device, the plasticizing device is started, the temperature of the plasticizing device is adjusted to 200 ℃, the plasticizing device is plasticized for 10-15min, the plasticizing temperature is adjusted to 220 ℃, the plasticizing device is plasticized for 5-10min, and finally the plasticizing temperature is adjusted to 240 ℃, and the plasticizing device is plasticized for 1-5 min.
Preferably, in S7, the appearance of the cooled material is detected, and during detection, the film is photographed by the industrial camera through the bottom of the industrial camera, the photographed picture is transmitted to the control center for comparative analysis, and an alarm is given when abnormality occurs.
Preferably, in S7, the tension of the film is detected during winding, the detected data is transmitted to the control center, and the control center controls the winding speed of the winding mechanism according to the detected data.
Preferably, in S3, when the heating, dehumidifying and drying is performed, the timer starts to count time, the humidity detector continuously monitors the humidity of the mixture a, when the humidity reaches a predetermined value, the timer stops, and the data on the timer at this time is read, that is, the time consumed by the dehumidifying and drying is obtained.
Compared with the prior art, the invention has the beneficial effects that:
according to the scheme, the time consumed by dehumidification and drying is recorded, the time consumed by dehumidification and drying is extracted from the database according to the weight of the mixture A, the extraction time is compared with the recorded time, the dehumidification and drying efficiency is obtained through analysis, and the dehumidification and drying effect can be controlled;
according to the scheme, the temperature detector is adopted to detect the temperature of the cooled material, the detected data are recorded, the recorded data are compared with preset data, when the recorded data are larger than the preset data, the cooling treatment step needs to be adjusted, and the cooling efficiency can be controlled;
the invention can control the dehumidification and drying effect and the cooling efficiency, and has simple process.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example one
A production process of a nanometer heat-insulating EVA intermediate film comprises the following steps:
s1: metering the raw materials, and mixing for 10min at 50r/min and 40 deg.C to obtain mixture A;
s2: weighing the mixture A, measuring the humidity of the mixture A, and recording the weighing and measuring data;
s3: heating, dehumidifying and drying the mixture A, recording the time consumed by dehumidifying and drying, starting timing by a timer when heating, dehumidifying and drying are carried out, continuously monitoring the humidity of the mixture A by a humidity detector, stopping the timer when the humidity reaches a preset value, and reading data on the timer at the moment, namely the time consumed by dehumidifying and drying;
s4: extracting the normal time required for dehumidification and drying from a database according to the weight of the mixture A;
s5: comparing the extraction time with the time recorded in S3, and analyzing to obtain the dehumidification and drying efficiency;
s6: plasticizing the composition subjected to dehumidification and drying at high temperature, and then performing melt extrusion by using an extruder, wherein the plasticizing time is 20min and the plasticizing temperature is 200 ℃;
s7: the method comprises the steps of cooling extruded materials, manufacturing an EVA film, rolling and packaging the EVA film, detecting the temperature of the cooled materials by adopting a temperature detector, recording detected data, comparing the recorded data with preset data, adjusting the cooling processing step when the recorded data is larger than the preset data, detecting the appearance of the cooled materials, detecting the film, photographing the film through the bottom of an industrial camera, transmitting the photographed picture to a control center for contrastive analysis, alarming when abnormity occurs, detecting the tension of the film during rolling, transmitting the detected data to the control center, and controlling the rolling speed of a rolling mechanism by the control center according to the detected data.
Example two
A production process of a nanometer heat-insulating EVA intermediate film comprises the following steps:
s1: metering the raw materials, and mixing for 15min at a mixing speed of 70r/min and a mixing temperature of 50 ℃ to obtain a mixture A;
s2: weighing the mixture A, measuring the humidity of the mixture A, and recording the weighing and measuring data;
s3: heating, dehumidifying and drying the mixture A, recording the time consumed by dehumidifying and drying, starting timing by a timer when heating, dehumidifying and drying are carried out, continuously monitoring the humidity of the mixture A by a humidity detector, stopping the timer when the humidity reaches a preset value, and reading data on the timer at the moment, namely the time consumed by dehumidifying and drying;
s4: extracting the normal time required for dehumidification and drying from a database according to the weight of the mixture A;
s5: comparing the extraction time with the time recorded in S3, and analyzing to obtain the dehumidification and drying efficiency;
s6: plasticizing the composition subjected to dehumidification and drying at high temperature, and then performing melt extrusion by using an extruder, wherein the plasticizing time is 25min, and the plasticizing temperature is 220 ℃;
s7: the method comprises the steps of cooling extruded materials, manufacturing an EVA film, rolling and packaging the EVA film, detecting the temperature of the cooled materials by adopting a temperature detector, recording detected data, comparing the recorded data with preset data, adjusting the cooling processing step when the recorded data is larger than the preset data, detecting the appearance of the cooled materials, detecting the film, photographing the film through the bottom of an industrial camera, transmitting the photographed picture to a control center for contrastive analysis, alarming when abnormity occurs, detecting the tension of the film during rolling, transmitting the detected data to the control center, and controlling the rolling speed of a rolling mechanism by the control center according to the detected data.
EXAMPLE III
A production process of a nanometer heat-insulating EVA intermediate film comprises the following steps:
s1: metering the raw materials, and mixing for 20min at a mixing speed of 100r/min and a mixing temperature of 60 ℃ to obtain a mixture A;
s2: weighing the mixture A, measuring the humidity of the mixture A, and recording the weighing and measuring data;
s3: heating, dehumidifying and drying the mixture A, recording the time consumed by dehumidifying and drying, starting timing by a timer when heating, dehumidifying and drying are carried out, continuously monitoring the humidity of the mixture A by a humidity detector, stopping the timer when the humidity reaches a preset value, and reading data on the timer at the moment, namely the time consumed by dehumidifying and drying;
s4: extracting the normal time required for dehumidification and drying from a database according to the weight of the mixture A;
s5: comparing the extraction time with the time recorded in S3, and analyzing to obtain the dehumidification and drying efficiency;
s6: plasticizing the composition subjected to dehumidification and drying at high temperature, and then performing melt extrusion by using an extruder, wherein the plasticizing time is 30min and the plasticizing temperature is 240 ℃;
s7: the method comprises the steps of cooling extruded materials, manufacturing an EVA film, rolling and packaging the EVA film, detecting the temperature of the cooled materials by adopting a temperature detector, recording detected data, comparing the recorded data with preset data, adjusting the cooling processing step when the recorded data is larger than the preset data, detecting the appearance of the cooled materials, detecting the film, photographing the film through the bottom of an industrial camera, transmitting the photographed picture to a control center for contrastive analysis, alarming when abnormity occurs, detecting the tension of the film during rolling, transmitting the detected data to the control center, and controlling the rolling speed of a rolling mechanism by the control center according to the detected data.
The production process of the nanometer heat-insulating EVA intermediate film provided by the first, second and third embodiments can control the dehumidification and drying effect and the cooling efficiency, and the second embodiment is the best embodiment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The production process of the nanometer heat-insulating EVA intermediate film is characterized by comprising the following steps of:
s1: metering the raw materials, and then mixing to obtain a mixture A;
s2: weighing the mixture A, measuring the humidity of the mixture A, and recording the weighing and measuring data;
s3: heating, dehumidifying and drying the mixture A, and recording the time consumed by dehumidifying and drying;
s4: extracting the normal time required for dehumidification and drying from a database according to the weight of the mixture A;
s5: comparing the extraction time with the time recorded in S3, and analyzing to obtain the dehumidification and drying efficiency;
s6: plasticizing the composition subjected to dehumidification and drying at high temperature, and then melting and extruding by using an extruder;
s7: and cooling the extruded material to prepare the EVA film, and rolling and packaging the EVA film.
2. The production process of the nano heat-insulation EVA intermediate film according to claim 1, wherein in S1, raw materials are metered and mixed for 10-20min at a mixing speed of 50-100r/min and a mixing temperature of 40-60 ℃ to obtain a mixture A.
3. The process for producing a nano heat-insulating EVA intermediate film as claimed in claim 1, wherein in S6, the composition after dehumidification and drying is plasticized at high temperature and then melt-extruded by an extruder, wherein the plasticizing time is 20-30min and the plasticizing temperature is 200-240 ℃.
4. The process for producing a nano heat-insulating EVA intermediate film according to claim 1, wherein in S7, a temperature detector is used to detect the temperature of the cooled material, the detected data is recorded, the recorded data is compared with preset data, and when the recorded data is greater than the preset data, the cooling step needs to be adjusted.
5. The production process of the nano heat-insulation EVA intermediate film according to claim 1, wherein in S6, the composition after dehumidification and drying is put into a plasticizing device, the plasticizing device is started, the temperature of the plasticizing device is adjusted to 200 ℃, the plasticizing is carried out for 10-15min, then the plasticizing temperature is adjusted to 220 ℃, the plasticizing is carried out for 5-10min, and finally the plasticizing temperature is adjusted to 240 ℃, and the plasticizing is carried out for 1-5 min.
6. The production process of the nano heat-insulation EVA intermediate film according to claim 1, wherein in S7, the appearance of the cooled material is detected, when the film is detected, the film passes through the bottom of an industrial camera, the film is photographed by the industrial camera, the photographed picture is transmitted to a control center for comparative analysis, and an alarm is given when abnormality occurs.
7. The production process of the nano heat-insulation EVA intermediate film according to claim 1, wherein in S7, the tension of the film is detected during rolling, the detected data is transmitted to a control center, and the control center controls the rolling speed of the rolling mechanism according to the detected data.
8. The process of claim 1, wherein in step S3, when heating, dehumidifying and drying is performed, a timer starts to time, the humidity of the mixture a is continuously monitored by a humidity detector, when the humidity reaches a predetermined value, the timer stops, and data on the timer is read, which is the time consumed by dehumidifying and drying.
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|---|---|---|---|
| CN202110593806.6A CN113478771A (en) | 2021-05-28 | 2021-05-28 | Production process of nano heat-insulating EVA intermediate film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110593806.6A CN113478771A (en) | 2021-05-28 | 2021-05-28 | Production process of nano heat-insulating EVA intermediate film |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58131030A (en) * | 1982-01-29 | 1983-08-04 | Toppan Printing Co Ltd | Manufacture of film |
| CN103419364A (en) * | 2013-08-12 | 2013-12-04 | 苏州华日金菱机械有限公司 | Damp-proof ultrasonic plastic welding machine |
| CN203391190U (en) * | 2013-07-02 | 2014-01-15 | 博罗承创精密工业有限公司 | Automatic feeding system of injection molding machine |
| CN203543117U (en) * | 2013-08-12 | 2014-04-16 | 苏州华日金菱机械有限公司 | Moisture-proof ultrasonic plastic welding machine |
| CN103862651A (en) * | 2014-03-30 | 2014-06-18 | 湖州凯博电子线缆有限公司 | Plastic particle feeding device of cable processing device |
| KR20140075867A (en) * | 2012-12-10 | 2014-06-20 | 도레이첨단소재 주식회사 | Preparing process of an encapsulation sheet for a solarcell using the in-line coating method |
| CN106956409A (en) * | 2017-05-31 | 2017-07-18 | 盐城三强线缆有限公司 | A kind of cable produces Anti-bubble extruding machine |
| CN107805339A (en) * | 2017-11-07 | 2018-03-16 | 董丹丹 | A kind of production technology of environmentally friendly antiseize membrane |
| CN210082349U (en) * | 2019-07-01 | 2020-02-18 | 青岛鼎益塑料机械有限公司 | Extrusion equipment for three-layer composite pipe |
-
2021
- 2021-05-28 CN CN202110593806.6A patent/CN113478771A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58131030A (en) * | 1982-01-29 | 1983-08-04 | Toppan Printing Co Ltd | Manufacture of film |
| KR20140075867A (en) * | 2012-12-10 | 2014-06-20 | 도레이첨단소재 주식회사 | Preparing process of an encapsulation sheet for a solarcell using the in-line coating method |
| CN203391190U (en) * | 2013-07-02 | 2014-01-15 | 博罗承创精密工业有限公司 | Automatic feeding system of injection molding machine |
| CN103419364A (en) * | 2013-08-12 | 2013-12-04 | 苏州华日金菱机械有限公司 | Damp-proof ultrasonic plastic welding machine |
| CN203543117U (en) * | 2013-08-12 | 2014-04-16 | 苏州华日金菱机械有限公司 | Moisture-proof ultrasonic plastic welding machine |
| CN103862651A (en) * | 2014-03-30 | 2014-06-18 | 湖州凯博电子线缆有限公司 | Plastic particle feeding device of cable processing device |
| CN106956409A (en) * | 2017-05-31 | 2017-07-18 | 盐城三强线缆有限公司 | A kind of cable produces Anti-bubble extruding machine |
| CN107805339A (en) * | 2017-11-07 | 2018-03-16 | 董丹丹 | A kind of production technology of environmentally friendly antiseize membrane |
| CN210082349U (en) * | 2019-07-01 | 2020-02-18 | 青岛鼎益塑料机械有限公司 | Extrusion equipment for three-layer composite pipe |
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