CN110142905A - Amberplex continuous doctor-blading shaping method and device - Google Patents
Amberplex continuous doctor-blading shaping method and device Download PDFInfo
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- CN110142905A CN110142905A CN201910384590.5A CN201910384590A CN110142905A CN 110142905 A CN110142905 A CN 110142905A CN 201910384590 A CN201910384590 A CN 201910384590A CN 110142905 A CN110142905 A CN 110142905A
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- film
- amberplex
- casting machine
- blading
- slurry
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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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/46—Heating or cooling
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/52—Measuring, controlling or regulating
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The present invention relates to a kind of amberplex continuous doctor-blading shaping method and devices, belong to materials science field.First by film-forming resin and polymer or inorganic particulate filler, dissolution dispersion in organic solvent, adjusts solution concentration, then carry out deaeration, forms film slurry；Film slurry is put into feeding system, casting machine is entered by the pipeline of connection, curing molding is carried out by change temperature field, electric field on casting machine, finally wound, cut to obtain amberplex.The invention has the advantages that realizing continuous production, shorten the production cycle, film finished product rate improves, and reduces cost；The usage amount of organic matter is few, and solvent recovery unit is equipped on casting machine, reduces environmental pollution；It is easy to operate, to the of less demanding of equipment and operator.
Description
Technical field
The present invention relates to a kind of amberplex continuous doctor-blading shaping method and devices, belong to materials science field.
Background technique
Amberplex be with ion-exchange performance, the main film made of high molecular material.It and ion are handed over
It is similar to change resin, is all one active group of connection on macromolecular scaffold, but the mechanism of action and mode, effect have difference
Place.Amberplex is widely used, and can be such as assembled into electric dialyzator and is used for the desalination of bitter and the concentration of salting liquid, can also
Applied to glycerol, the desalination of polyethylene glycol, various ions and radioactive element, isotope, classification amino acid separation etc. are separated.This
Outside, the processing of radioactive liquid waste and the preparation of nuclear fuel in organic and inorganic compound purifying, atomic energy industry, and combustion
Expect in battery diaphragm, flow battery and ion selective electrode, also all uses amberplex.Amberplex is led in membrane technology
It occupies an important position in domain, it will also play an important role to Biomimetic membranes research.
It is extrusion by melting for preparing a kind of for amberplex, membrane formation mechanism is the melting temperature and starting point of resin
When solution temperature difference is larger, it can use resin melt directly from the forming method of extruder film extrusion.The method is tree
Rouge is directly extruded with extruder at a certain temperature, and extrusion temperature should be higher than the melting temperature of resin, and lower than decomposition
Temperature.But country's urgent problem is improved with high-temperature resin extrusion process (such as: perfluoro sulfonic acid membrane), elimination film forming at present
The problems such as " pinprick " in the process, eliminates " flake " problem in enhancing composite membrane and improves the equipment complex of film to improve
The composite effect of film, and the equipment price of the preparation process is relatively high.Another film build method be tape-casting: its at
Film mechanism is that macromolecular chain segment is reset and enters lattice and become orderly from unordered during dense amberplex solution evaporation
Crystallization process forms amberplex after solvent volatilization.Macromolecular resets movement and needs certain energy of thermal motion, and forms crystallization
Structure needs intermolecular to have enough cohesive energys again.This method is more commonly used, and mostly use the tape casting is in laboratory or small quantities of
When the other ion exchange film preparation of magnitude.It is domestic that diaphragm, Chinese patent application (publication number are mainly prepared using solution film casting method
CN101316880A in patent), a kind of film casting method of solution is disclosed, however the dosage of solution film casting method solvent is big, to environment
Seriously polluted, production efficiency is low, film thickness homogeneity is not high.Therefore, develop a kind of high production efficiency, performance be stable, product at
Product height, the uniform amberplex continuous doctor-blading shaping method of film thickness and device are most important.
Summary of the invention
The object of the present invention is to provide a kind of amberplex continuous doctor-blading shaping method and devices, solve conventional tape casting process
The problems such as preparing low amberplex production efficiency, high rejection rate, poor film thickness uniformity.
Technical solution of the present invention:
A kind of amberplex continuous doctor-blading shaping method, preparation, feed including the slurry that forms a film, enters stream by scraper
Prolong heat-treating profiled machine and Membrane cleaning, winding, cut step, detailed process is as follows: first by film-forming resin, and polymerization
Object or inorganic particulate filler, dissolution dispersion in organic solvent, adjust solution concentration, then carry out deaeration, form film slurry；It will
Be film-made slurry put into feeding system, casting machine is entered by the pipeline of connection, on casting machine by change temperature field, electric field into
Row curing molding is finally wound, cuts to obtain amberplex.
The amberplex continuous doctor-blading shaping method, film-forming resin and polymer include perfluorinated sulfonic resin, gather
One of pvdf resin, polybenzimidazole resin, polysulfone resin, polyethersulfone resin, polyether-ether-ketone resin, polyvinyl alcohol resin
Kind is two or more.
The amberplex continuous doctor-blading shaping method, inorganic particulate include silica, titanium dioxide, molecule
The one or more of sieve, mesopore molecular sieve.
The amberplex continuous doctor-blading shaping method, organic solvent be dimethylbenzene, n,N-Dimethylformamide, N,
N- dimethyl second formamide, DMAC N,N' dimethyl acetamide, dimethyl sulfoxide, N- base pyrrolidones, ethyl alcohol, one kind of methanol or two
Kind or more.
The amberplex continuous doctor-blading shaping method, the mass fraction adjusting range 30~80% of solution concentration.
The amberplex continuous doctor-blading shaping method, temperature field carry out curing molding using different temperature zones and are divided into
Three sections, the first stage be 30~80 DEG C of low-temperature zone, second stage be 80~120 DEG C of middle-temperature section, the phase III be high temperature section 120~
300℃。
The amberplex continuous doctor-blading shaping method, electric field are to introduce electricity in film forming process according to membrane structure
, 5~50Vcm of electric field strength-1, 2~10h of time.
The amberplex continuous doctor-blading shaping method, curing molding caudacoria, which enters pretreatment tank, to carry out at functionality
Reason, functional processing includes the sulfonation of amberplex, quaternary ammoniated or phosphorylation hydrophilic modifying；Alternatively, in pretreatment tank
It is put into extractant, the additive in prepared film is extracted and prepares perforated membrane.
Amberplex that the method uses is cast apparatus for continuous formation, comprising: slurry carried transmission belt, feed inlet,
Scraper, casting machine, exhaust outlet, pretreatment tank, rinse bath, wrap-up, Scissoring device, pretreatment tank heating plate, casting machine are solid
It is melted into film heating plate, belt wheel, specific structure is as follows: slurry carried transmission belt is wound on the belt wheel of the other side from side belt wheel, and two
It is sequentially arranged above feed inlet, scraper, casting machine between a belt wheel, slurry carried transmission belt successively passes through curtain coating through belt wheel
Casting machine film-forming heating plate is arranged in machine, pretreatment tank, rinse bath, wrap-up to Scissoring device, curtain coating motor spindle；Curtain coating
Machine top is equipped with exhaust outlet and hot wind compensating port, and casting machine top passes through piping connection solvent recovery unit, the bottom of pretreatment tank
Portion has pretreatment tank heating plate.
The amberplex is cast apparatus for continuous formation, and slurry carried transmission belt includes steel band, PET base band, polyamides
Imido grpup band or enhancing net；Amberplex is compactness film, perforated membrane or enhancing film, and the preparation of amberplex is with a thickness of 30
~300 microns.
Design philosophy of the invention is:
The present invention will be film-made slurry investment feeding system and enter casting machine into casting machine by high-precision scraper, flowing
Prolonging on machine through environment such as regulating and controlling temperature field, electric fields is that film carries out curing molding, and molding caudacoria enters pretreatment tank and handled
Obtain the functional ion exchange membrane of different structure.The present invention subtracts the usage amount of organic matter by adjusting the concentration of film slurry
Few, not only environmental pollution was small, but also accelerated film forming speed, improves production efficiency, film cost is effectively reduced.In addition, in film forming process
The microstructure of the controllable film of the coordinative role of middle temperature field and electric field, in conjunction with film functional processing after molding, the present invention
The controllable functional dense film of membrane microstructure, perforated membrane, enhancing film can be prepared.
The invention has the advantages and beneficial effects that:
Film thickness homogeneity prepared by the present invention is good, and finished product rate improves；Make diaphragm by the regulation to filming technology
Structure diversification can prepare dense film, perforated membrane, enhancing film etc.；It realizes the continuous production of film, shortens the production cycle, reduce
Cost；The usage amount of organic matter is few, and solvent recovery unit is equipped on casting machine, reduces environmental pollution；It is easy to operate, to equipment
It is of less demanding with operator.
Detailed description of the invention
Fig. 1 is the preparation technology flow chart of amberplex.
In figure, 1, slurry carried transmission belt, 2, feed inlet, 3, scraper, 4, casting machine, 5, exhaust outlet, 6, pretreatment tank, 7,
Rinse bath, 8, wrap-up, 9, Scissoring device, 10, pretreatment tank heating plate, 11, casting machine film-forming heating plate, 12, band
Wheel, 13, solvent recovery unit, 14, hot wind compensating port.
Specific embodiment
As shown in Figure 1, amberplex of the present invention is cast apparatus for continuous formation, specifically include that slurry carried transmission belt 1,
Feed inlet 2, scraper 3, casting machine 4, exhaust outlet 5, pretreatment tank 6, rinse bath 7, wrap-up 8, Scissoring device 9, pretreatment tank
Heating plate 10, casting machine film-forming heating plate 11, belt wheel 12, solvent recovery unit 13 etc., specific structure is as follows:
Slurry carried transmission belt 1 is wound on the belt wheel of the other side from side belt wheel 12, and the top between two belt wheels is successively
Feed inlet 2, scraper 3, casting machine 4 are set, and slurry carried transmission belt 1 successively passes through casting machine 4, pretreatment tank 6, cleaning through belt wheel
Casting machine film-forming heating plate 11 is arranged in slot 7, wrap-up 8 to Scissoring device 9,4 bottom of casting machine, and casting machine top is equipped with
Exhaust outlet 5 and hot wind compensating port 14, casting machine top pass through piping connection solvent recovery unit 13, functional pretreatment tank 6
Bottom has pretreatment tank heating plate 10.
In the specific implementation process, amberplex continuous doctor-blading shaping method of the present invention, process flow are as follows: film forming
The preparation of slurry, feed, heat-treating profiled into casting machine 4 by feed inlet 2 and scraper 3, preprocessed slot 6 carries out film function
Property processing, after rinse bath 7 cleaned, the rolling winding of device 8, Scissoring device 9 are cut.Film-forming resin has been dissolved in first
In solvent, then by the polymer of one or more kinds of different function or inorganic particulate filler dispersion in a solvent, finally will
Two kinds of solution stir evenly, and adjust solution concentration, then carry out deaeration, dissolve 1~10h shape in room temperature to heating stirring in 300 DEG C
At film slurry.Film slurry is put into feeding system, casting machine is entered by the pipeline of connection, passes through difference on casting machine
The environment such as temperature field or electric field carry out curing molding, and molding caudacoria enters pretreatment tank and carries out functional processing, finally received
Volume, cutting obtain amberplex.Wherein, slurry carried transmission belt includes steel band, PET base band, polyimides base band or enhancing
Net；Amberplex is compactness film, perforated membrane or enhancing film, and the preparation of amberplex is with a thickness of 30~300 microns.
In the following, by embodiment, technical scheme of the present invention will be further explained in detail.
Embodiment 1
In the present embodiment, 8kg perfluorinated sulfonic resin and 0.5kg Kynoar (PVDF) resin are dissolved in 30L dimethyl
In acetamide (DMAC), heating stirring dissolution 6h forms film slurry in 220 DEG C, carries out vacuumizing and defoaming under stiring.It will
It is film-made slurry and puts into feeding system, casting machine is entered by the pipeline of connection, slurry controls the thickness of solution, film by scraper
Slurry enters 60~80 DEG C, 80~120 DEG C, 120~150 DEG C of three temperature sections progress curing moldings, is finally wound, is cut
Perfluorinated sulfonic acid ion exchange membrane is obtained, the preparation of amberplex is with a thickness of 150 microns.
Embodiment 2
In the present embodiment, 10kg polybenzimidazole resin is dissolved in 40L dimethylformamide (DMF), is stirred at normal temperature
It mixes dissolution 7h and forms film slurry, and be stirred vacuumizing and defoaming.Film slurry is put into feeding system, passes through the pipe of connection
Road enters casting machine, and slurry controls the thickness of solution by scraper, film slurry enter 60~80 DEG C, 80~120 DEG C, 120~
150 DEG C of three temperature sections carry out curing molding, and molding caudacoria, which enters in the phosphate aqueous solution of concentration 70wt%, to be handled for 70 DEG C,
It finally wound, cut to obtain amberplex, the preparation of amberplex is with a thickness of 100 microns.
Embodiment 3
In the present embodiment, 10kg polyvinylidene fluoride resin is dissolved in 40L dimethyl acetamide (DMAC), is stirred at 80 DEG C
It dissolves 8h and forms film slurry, additives polyvinyl alcohol resin (PVA) 500mL is added in the solution, stir 2 hours simultaneously
In ultrasonic oscillation, refines solution and drive away micro-bubble therein, and be stirred vacuumizing and defoaming.Film slurry is thrown
Enter feeding system, casting machine is entered by the pipeline of connection, slurry controls the thickness of solution by scraper, and film slurry enters 60
~80 DEG C, 80~120 DEG C, 120~150 DEG C of three temperature sections carry out curing moldings, after heat treatment, film enter extractant ethyl alcohol and
The mixed solution of deionized water is extracted, and is cleaned in entering rinse bath with deionized water, prepares perforated membrane, most laggard
Row hot pressing winding, cutting obtain perforated membrane, and the preparation of amberplex is with a thickness of 200 microns.
Embodiment 4
In the present embodiment, 8kg perfluorinated sulfonic resin and 0.5kg Kynoar (PVDF) resin are dissolved in 30L dimethyl
In acetamide (DMAC), heating stirring dissolution 6h forms film slurry in 220 DEG C, carries out vacuumizing and defoaming under stiring.It will
It is film-made slurry and puts into feeding system, casting machine is entered by the pipeline of connection, slurry controls the thickness of solution, film by scraper
Slurry enters in the enhancing net with polytetrafluoroethylene (PTFE), using 60~80 DEG C, 80~120 DEG C, 120~150 DEG C of three temperature sections
Curing molding is carried out, molding caudacoria is wound, is cut, enhanced perfluorinated sulfonic acid ion exchange membrane is obtained, amberplex
Preparation is with a thickness of 50 microns.
Embodiment 5
In the present embodiment, 8kg perfluorinated sulfonic resin and 0.5kg Kynoar (PVDF) resin are dissolved in 30L dimethyl
In acetamide (DMAC), heating stirring dissolution 5h forms film slurry in 220 DEG C, carries out vacuumizing and defoaming under stiring.It will
It is film-made slurry and puts into feeding system, casting machine is entered by the pipeline of connection, slurry controls the thickness of solution, film by scraper
Slurry enters in the enhancing net with polytetrafluoroethylene (PTFE), introduces electric field in film forming process according to membrane structure and is solidified into
Type, electric field strength 20Vcm-1, time 6h.Molding caudacoria is wound, is cut, and enhanced perfluorosulfonic acid ion exchange is obtained
Film, the preparation of amberplex is with a thickness of 50 microns.
Embodiment 6
In the present embodiment, 10kg polyvinylidene fluoride resin is dissolved in 40L dimethyl acetamide (DMAC), is stirred at 80 DEG C
It dissolves 6h and forms film slurry, additives polyvinyl alcohol resin (PVA) 500mL is added in the solution, stir 2 hours simultaneously
In ultrasonic oscillation, refines solution and drive away micro-bubble therein, and be stirred vacuumizing and defoaming.Film slurry is thrown
Enter feeding system, casting machine is entered by the pipeline of connection, slurry controls the thickness of solution by scraper, according to membrane structure in film
Electric field is introduced in forming process carries out curing molding, electric field strength 30Vcm-1, time 5h.After heat treatment, film enters extractant
Ethyl alcohol and the mixed solution of deionized water are extracted, and are cleaned in entering rinse bath with deionized water, prepare perforated membrane,
Finally progress hot pressing winding, cutting obtain perforated membrane, and the preparation of amberplex is with a thickness of 200 microns.
The experimental results showed that being cast as film-forming resin and filler carry out the adjustment film film slurry of different proportion
Curing molding on machine prepares compactness film, perforated membrane and enhancing film by the functionalization of different demands.It is prepared by the present invention
Film can realize continuous production, and high degree of automation, environmental pollution is small, and product quality is high, easy to operate, to equipment and operator
Member's is of less demanding.
Claims (10)
1. a kind of amberplex continuous doctor-blading shaping method, which is characterized in that preparation, feed including the slurry that forms a film pass through
Scraper enters heat-treating profiled casting machine and Membrane cleaning, winding, cuts step, and detailed process is as follows: first setting film forming
Rouge and polymer or inorganic particulate filler, dissolution dispersion in organic solvent, adjust solution concentration, then carry out deaeration, are formed
It is film-made slurry；Film slurry is put into feeding system, casting machine is entered by the pipeline of connection, by changing temperature on casting machine
Field, electric field progress curing molding are spent, finally wound, cut to obtain amberplex.
2. amberplex continuous doctor-blading shaping method described in accordance with the claim 1, which is characterized in that film-forming resin and polymerization
Object includes perfluorinated sulfonic resin, polyvinylidene fluoride resin, polybenzimidazole resin, polysulfone resin, polyethersulfone resin, polyether-ether-ketone
The one or more of resin, polyvinyl alcohol resin.
3. amberplex continuous doctor-blading shaping method described in accordance with the claim 1, which is characterized in that inorganic particulate includes two
The one or more of silica, titanium dioxide, molecular sieve, mesopore molecular sieve.
4. amberplex continuous doctor-blading shaping method described in accordance with the claim 1, which is characterized in that organic solvent is diformazan
Benzene, N,N-dimethylformamide, N, N- dimethyl second formamide, DMAC N,N' dimethyl acetamide, dimethyl sulfoxide, N- base pyrrolidines
The one or more of ketone, ethyl alcohol, methanol.
5. amberplex continuous doctor-blading shaping method described in accordance with the claim 1, which is characterized in that the quality of solution concentration
Score adjusting range 30~80%.
6. amberplex continuous doctor-blading shaping method described in accordance with the claim 1, which is characterized in that temperature field is using different
Temperature section carries out curing molding and is divided into three sections, and the first stage is 30~80 DEG C of low-temperature zone, and second stage is middle-temperature section 80~120
DEG C, the phase III is 120~300 DEG C of high temperature section.
7. amberplex continuous doctor-blading shaping method described in accordance with the claim 1, which is characterized in that electric field is according to film knot
Structure introduces electric field, 5~50Vcm of electric field strength in film forming process-1, 2~10h of time.
8. amberplex continuous doctor-blading shaping method described in accordance with the claim 1, which is characterized in that curing molding caudacoria into
Enter pretreatment tank and carry out functional processing, functional processing includes the sulfonation, quaternary ammoniated or phosphorylation hydrophilic of amberplex
It is modified；Alternatively, being put into extractant in pretreatment tank, the additive in prepared film is extracted and prepares perforated membrane.
9. the amberplex that a kind of one of claim 1 to 8 the method uses is cast apparatus for continuous formation, feature exists
In, comprising: slurry carried transmission belt, feed inlet, scraper, casting machine, exhaust outlet, pretreatment tank, rinse bath, wrap-up, sanction
Cut device, pretreatment tank heating plate, casting machine film-forming heating plate, belt wheel, specific structure is as follows: slurry carried transmission belt from
Side belt wheel is wound on the belt wheel of the other side, is sequentially arranged above feed inlet, scraper, casting machine, slurry between two belt wheels
It carries transmission belt and successively passes through casting machine, pretreatment tank, rinse bath, wrap-up to Scissoring device through belt wheel, be cast motor spindle
Casting machine film-forming heating plate is set；Casting machine top is equipped with exhaust outlet and hot wind compensating port, and casting machine top passes through pipeline
Solvent recovery unit is connected, the bottom of pretreatment tank has pretreatment tank heating plate.
10. amberplex is cast apparatus for continuous formation according to claim 8, which is characterized in that slurry carried transmission
Band includes steel band, PET base band, polyimides base band or enhancing net；Amberplex be compactness film, perforated membrane or enhancing film,
The preparation of amberplex is with a thickness of 30~300 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910384590.5A CN110142905A (en) | 2019-05-09 | 2019-05-09 | Amberplex continuous doctor-blading shaping method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910384590.5A CN110142905A (en) | 2019-05-09 | 2019-05-09 | Amberplex continuous doctor-blading shaping method and device |
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| CN110142905A true CN110142905A (en) | 2019-08-20 |
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| CN201910384590.5A Pending CN110142905A (en) | 2019-05-09 | 2019-05-09 | Amberplex continuous doctor-blading shaping method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111300706A (en) * | 2019-12-28 | 2020-06-19 | 贵州金田新材料科技有限公司 | Waste heat recovery utilizes system in BOPP membrane manufacturing process |
| CN117067470A (en) * | 2023-10-12 | 2023-11-17 | 泉州诺达机械有限公司 | Preparation equipment and process of preformed casting film |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111300706A (en) * | 2019-12-28 | 2020-06-19 | 贵州金田新材料科技有限公司 | Waste heat recovery utilizes system in BOPP membrane manufacturing process |
| CN111300706B (en) * | 2019-12-28 | 2021-10-12 | 贵州金田新材料科技有限公司 | Waste heat recovery utilizes system in BOPP membrane manufacturing process |
| CN117067470A (en) * | 2023-10-12 | 2023-11-17 | 泉州诺达机械有限公司 | Preparation equipment and process of preformed casting film |
| CN117067470B (en) * | 2023-10-12 | 2023-12-15 | 泉州诺达机械有限公司 | Preparation equipment and process of preformed casting film |
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Application publication date: 20190820 |