CN101537697A - Production equipment of non-woven fabric compound economic master batch - Google Patents
Production equipment of non-woven fabric compound economic master batch Download PDFInfo
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- CN101537697A CN101537697A CN200910135453A CN200910135453A CN101537697A CN 101537697 A CN101537697 A CN 101537697A CN 200910135453 A CN200910135453 A CN 200910135453A CN 200910135453 A CN200910135453 A CN 200910135453A CN 101537697 A CN101537697 A CN 101537697A
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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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
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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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/385—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in separate barrels
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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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/39—Plasticisers, homogenisers or feeders comprising two or more stages a first extruder feeding the melt into an intermediate location of a second extruder
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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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention relates to a production equipment of a non-woven fabric compound economic master batch. The formulation of the master batch comprises: 12-18 parts of polypropylene resin with melt index being 60-90, 6-10 parts of polypropylene resin with melt index being 3-30, 55-65 parts of nanometer active calcium carbonate, 8-10 parts of polyethylene wax, 0.5-0.7 part of compound antioxidant, 1.5-2.5 parts of zinc stearate, 1.5-2.5 parts of titanic acid ester, 1.5-2 parts of white oil and 1.5-2 parts of rutile titanium dioxide. The production method of the master batch comprises the steps of: feeding the materials after intensive mixing into a double-screw extruder and later into a single-screw extruder, conducting melt extrusion, grain cutting and screening to produce non-woven fabric finished product. The production equipment adopts a stair-type screw extruder comprising the first-stair double-screw extruder and the second-stair single screw extruder which are arranged in a 'T'-type. The invention adopts the nanometer active calcium carbonate which can partially substitute PP materials used for non-woven fabric. After being added to the PP materials used for the non-woven fabric, the invention can greatly reduce the cost of the materials and save large amount of energy under the premise that melt blowing and calendaring guarantee the no-breaking of fibers.
Description
Technical field:
The present invention relates to a kind of production equipment of nonwoven.Especially relate to a kind of as nonwoven, replace the production equipment of the non-woven fabric compound economic master batch of PP with part.Belong to non-weaving cloth material and production equipment special technical field thereof.
Background technology:
Make the raw material of nonwoven, what all adopted is PP (polypropylene) in the past, and PP is a petroleum by-product, and price is higher, and needs to consume a large amount of energy.
At present, filling-modified, functional agglomerate, Masterbatch processing technology generally are: adopt the high speed rotary blender that amboceptor and various auxiliary agent are activated with the abundant blending of inorganic matter, dehydration, form half molten agglomerate, adopt disintegrating machine to carry out the fragmentation back then and finish granulation process with single screw rod or double screw extruder.Along with the progress of society and the people attention to environmental protection, many modifying process are to the solvent free improvement, more material modified water-baseds have also been proposed stricter devolatilization requirement.On the other hand, sometimes for the requirement on some modification and the processing technology, in blend melt or logistics, add some low molecular compounds so that amboceptor and other inorganic, organic reinforcer and the various various additives that help to process or make processed mixture have required final performance carry out mixingly, and behind mixing process, need these unwanted volatilizable things are separated.In addition, some technological requirement is used and the immiscible low thing that boils of amboceptor, auxiliary agent of needing in the product etc. dissolved from mixture separate, as adopt now common technical process and equipment, then technological process complexity, time and effort consuming has restriction to production, and these processes all require to use new technology and equipment is transformed for this reason.
The present single screw extrusion machine that uses, usually according to the screw rod direction of rotation, the material that is entered by defeated material section compresses by certain compression ratio, oozes mixed, dispersion at mixing section, its devolatilization weak effect needs the process secondary or repeats to process dispersion, the devolatilization requirement that just can finish final performance for three times.And the double screw extruder that uses, be the effective equipment that oozes being mixed, devolatilization process that to finish various blend logistics systems, but it is big that co-rotating twin screw is extruded the shear action of material, because material is under the HTHP over a long time, particularly material its fluid after finishing each performance also is in to finish under the high temperature and extrudes, poor to the product packing that some performance of product etc. all can have adverse influence, high temperature to extrude, easily secondary suction.Simultaneously the double screw extruder self-cleaning is poor, causes residence time of material long, the dispersion Combination is relatively poor, and is high to manufacturing technique requirent, because of having limited their aborning application separately a bit.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of production equipment with non-woven fabric compound economic master batch that is used for high concentration filling, coloring system of preferable devolatilization, mixing and conveying effect is provided.The material price of its non-woven fabric compound economic master batch is lower, can partly replace the higher nonwoven of material price PP material.
The object of the present invention is achieved like this: a kind of production equipment of non-woven fabric compound economic master batch, described master batch mainly is made up of the raw material of following weight portion: acrylic resin 12-18 part of melt index 60-90, acrylic resin 6-10 part of melt index 3-30, nano activated calcium carbonate 55-65 part, Tissuemat E 8-10 part, composite antioxidant 0.5-0.7 part, zinc stearate 1.5-2.5 part, titanate coupling agent 1.5-2.5 part, white oil 1.5-2 part, rutile titanium white powder 1.5-2 part is characterized in that:
What described production equipment adopted is a step ladder type screw extruder, described staged screw extruder comprises the first rank double screw extruder and the second rank single screw extrusion machine, the described first rank double screw extruder and the second rank single screw extrusion machine are " T " font and arrange that the discharging opening of the first rank double screw extruder is connected with the charging aperture of the second rank single screw extrusion machine;
The described first rank double screw extruder comprises transmission device I, drawing-in device I (4) and carries mixing arrangement I, the parallel homodromal twin-screw element of engagement in described conveying mixing arrangement I comprises cylindrical shell I (6) and is contained in cylindrical shell I (6), described screw element comprises screw mandrel (9), screwing element (8) and kneading member (7), described transmission device I links to each other with screw mandrel (9), and screwing element (8) and kneading member (7) are arranged in from the upstream side to the downstream on the screw mandrel (9); The described second rank single screw extrusion machine comprises transmission device II, carries mixing arrangement II and extrudes pellet device (14), described conveying mixing arrangement II system comprises cylindrical shell II (15) and is contained in screw rod (13) in the cylindrical shell II (15) that described transmission device II links to each other with screw rod (13);
The screw diameter of the described first rank double screw extruder is
62mm, screw rod effective L D ratio are 40, and screw rod centre-to-centre spacing is 52mm, depth of thread engagement 11mm, pitch 44-72mm double end; The screw diameter of the described second rank single screw extrusion machine is
150mm, screw rod effective L D ratio are 7, single head.
The present invention can play the purpose of regulating whole melt index by the acrylic resin of melt index 60-90 and the acrylic resin of melt index 3-30 are used simultaneously by different proportionings.
Described nano activated calcium carbonate, its effect are to reduce cost of material, are difficult for chemical reaction, Heat stability is good, and whiteness is good, and oil absorbency is low, nontoxic, tasteless, easy dispersion;
Described Tissuemat E, it act as lubricant and dispersant, can improve the fineness of product and flowability when extruding,
Described composite antioxidant has outstanding stiff stability, and product is had the long-effective protection effect, can effectively suppress the thermal degradation and the oxidative degradation of polymer, improves the quality index of product;
Described zinc stearate is a fatty acid metal salts, in common plastic products, is effective lubricating agent, can improve the diffusivity of pigment, reduces the plastics machinery internal friction, improves product to extrude rate, simultaneously, increases the glossiness of material surface etc.
Described titanate coupling agent can improve the dispersiveness of calcium carbonate, calcium carbonate is done modification handle, and particularly the spinnability in the spinning filament nonwoven can improve greatly;
Described white oil, its effect are the dilution coupling agents, cover each molecule, improve dispersed;
Described rutile titanium white powder, to colourless nonwoven play that delustring is done and, improve product whiteness.
The present invention adopts nano activated calcium carbonate can partly replace nonwoven PP material, and the present invention is added among the raw materials used PP of nonwoven, is melting and spraying and is rolling under the continuous prerequisite of assurance fiber and can reduce material cost widely, and can save a large amount of energy.
Material enters the second rank single screw extrusion machine by the first rank double screw extruder discharge end through the feed end of the second rank single screw extrusion machine, the material that enters the second rank single screw extrusion machine is plastifying state substantially, can avoid the buildup time of staying long and cause decomposition.Therefore staged double screw extruder of the present invention has preferable devolatilization, mixing and conveying effect, can adapt to current blend production high concentration filling, coloring system.
Description of drawings
Fig. 1 is the general structure schematic diagram of the staged screw extruder of the present invention's employing.
Fig. 2 is the screw-rod structure schematic diagram of the first rank double screw extruder of the present invention's employing.
Fig. 3 is the screw-rod structure schematic diagram of the second rank single screw extrusion machine of the present invention's employing.
Among the figure: drive motors I1, shaft coupling I2, gear-box I3, drawing-in device 4, devolatilization exhaust outlet 5, cylindrical shell I6, kneading member 7, screwing element 8, screw mandrel 9, drive motors II10, shaft coupling II11, gear-box II12, screw rod 13, extrude blank system 14 and cylindrical shell II15.
The specific embodiment
Embodiment 1:
One, gets the raw materials ready
Take by weighing the acrylic resin 15kg of melt index 90, the acrylic resin 8kg of melt index 3, nano activated calcium carbonate 60kg, Tissuemat E 9kg, composite antioxidant 0.6kg, zinc stearate 2kg, titanate esters 2kg, white oil 1.7kg, rutile titanium white powder 1.7kg.
Two, batching
By proportioning above-mentioned raw materials is placed in the stirred vessel, mix.
Three, moulding
Well-mixed compound is sent into double screw extruder, make its fully mixing, fusion, dispersion and extrusion molding, in this process, utilize recirculated water control temperature.
Four, granulation
The article shaped that double screw extruder is extruded is sent into single screw extrusion machine, through melt extrude, pelletizing, vibratory sieve obtain the nonwoven finished product by screening, packing gets final product.
Embodiment 2:
One, gets the raw materials ready
Take by weighing the acrylic resin 15kg of melt index 60, the acrylic resin 8kg of melt index 30, nano activated calcium carbonate 60kg, Tissuemat E 9kg, composite antioxidant 0.6kg, zinc stearate 2kg, titanate coupling agent 2kg, white oil 1.7kg, rutile titanium white powder 1.7kg.
All the other are all with example 1.
What above-mentioned production process adopted is a step ladder type screw extruder, and its structure as shown in Figure 1.This staged screw extruder is made up of the first rank double screw extruder and the second rank single screw extrusion machine.The described first rank double screw extruder and the second rank single screw extrusion machine are " T " font and arrange that the discharging opening of the first rank double screw extruder is connected with the feed end of the second rank single screw extrusion machine.
The described first rank double screw extruder mainly is made up of drive motors I1, shaft coupling I2, gear-box I3, drawing-in device 4, conveying mixing arrangement, devolatilization gas extraction system and soft water circulatory system (not shown).Described conveying mixing arrangement mainly is made up of cylindrical shell I6, screw mandrel 9, screwing element 8, kneading member 7 and screw rod temperature-controlling system (not shown), as Fig. 2.Drive motors I1 links to each other with gear-box I3 by shaft coupling I2, and gear-box I3 output shaft links to each other with screw mandrel 7.The present embodiment has used screw diameter to be
62mm, screw rod effective L D ratio are 40, and cylindrical shell I6 divides nine sections temperature controls, and screw rod centre-to-centre spacing is 52mm, depth of thread engagement 11mm, pitch 44-72mm, screw head several 2.Cylindrical shell I6 top is provided with 4 one of drawing-in devices, 5 three of devolatilization exhaust outlets.
The described second rank single screw extrusion machine mainly by drive motors II10, shaft coupling II11, gear-box II12, carry mixing arrangement, soft water circulatory system (not shown) and extrude cutoff device 14 and form.
Described conveying mixing arrangement mainly is made up of cylindrical shell II15, screw rod 13 (as Fig. 3) and screw rod temperature-controlling system (not shown), and screw rod 13 is contained in the cylindrical shell II15.Drive motors II10 links to each other with gear-box II12 by shaft coupling II11, and gear-box II12 output shaft links to each other with screw rod 13.The present embodiment has used screw diameter to be
150mm, screw rod effective L D ratio are 7, and cylindrical shell II divides two sections temperature controls, screw head several 1.
The described first rank double screw extruder discharge end can be installed or the fracture blade is not installed, and specifically decides on material.And between the feed end of the first rank double screw extruder discharge end and the second rank single screw extrusion machine, filtering exhaust is set and is connected cover.
Operation principle:
According to technological requirement first rank, each zone temperatures of second rank are set, intensification reaches when temperature is set, starter motor, by a certain amount of powder and mixture are added in the charge door of the first rank double screw extruder, after the premix of the first five section cylindrical shell inner high voltage, the blend fluid flows to the 6th section exhaust outlet and carries out pre-devolatilization, can remove 50%～60% fugitive constituent, carry out the secondary vacuum exhaust during nine sections exhaust outlets of blend fluid to the, can remove 30%～40% fugitive constituent.The fluid that has removed fugitive constituent is sent into the second rank single screw extrusion machine by carrying screwing element, finishes removing of last a small amount of fugitive constituent therebetween, and what enter second rank partly plastifies object, and cryogenic high pressure to the extruding pelletization system, is finished whole processing technology from discharging opening.
The staged screw extruder that the present invention adopts is a kind of effective production equipment, it is by the screw rod function, make the blend fluid be in the high pressure blending, disperse, melting and being higher than under the state of volatile component temperature, carry out one and a plurality of exhaust sections, when this pressure reduces suddenly or is negative pressure, the low thing that boils, hydrone and low-molecular material sharply gasify, breaking through the resistance of melt parcel discharges outside the body with gaseous state, the requirement of the visual product of these processes is through repeating several times, can make the interior residual volatile matter content of melt reduce to minimum, the blend that the devolatilization process is finished enters extruding and granulating equipment, at low temperature, finish into granule product under the high-pressure situations, make blend improve packing, can not guaranteed the product processing technique requirement and store the needs that transport by secondary moisture absorption moisture content.
Claims (2)
1, a kind of production equipment of non-woven fabric compound economic master batch, described master batch mainly is made up of the raw material of following weight portion: acrylic resin 12-18 part of melt index 60-90, acrylic resin 6-10 part of melt index 3-30, nano activated calcium carbonate 55-65 part, Tissuemat E 8-10 part, composite antioxidant 0.5-0.7 part, zinc stearate 1.5-2.5 part, titanate coupling agent 1.5-2.5 part, white oil 1.5-2 part, rutile titanium white powder 1.5-2 part is characterized in that:
What described production equipment adopted is a step ladder type screw extruder, described staged screw extruder comprises the first rank double screw extruder and the second rank single screw extrusion machine, the described first rank double screw extruder and the second rank single screw extrusion machine are " T " font and arrange that the discharging opening of the first rank double screw extruder is connected with the charging aperture of the second rank single screw extrusion machine;
The described first rank double screw extruder comprises transmission device I, drawing-in device I (4) and carries mixing arrangement I, the parallel homodromal twin-screw element of engagement in described conveying mixing arrangement I comprises cylindrical shell I (6) and is contained in cylindrical shell I (6), described screw element comprises screw mandrel (9), screwing element (8) and kneading member (7), described transmission device I links to each other with screw mandrel (9), and screwing element (8) and kneading member (7) are arranged in from the upstream side to the downstream on the screw mandrel (9); The described second rank single screw extrusion machine comprises transmission device II, carries mixing arrangement II and extrudes pellet device (14), described conveying mixing arrangement II system comprises cylindrical shell II (15) and is contained in screw rod (13) in the cylindrical shell II (15) that described transmission device II links to each other with screw rod (13);
The screw diameter of the described first rank double screw extruder is
The screw rod effective L D ratio is 40, and screw rod centre-to-centre spacing is 52mm, depth of thread engagement 11mm, pitch 44-72mm double end; The screw diameter of the described second rank single screw extrusion machine is
The screw rod effective L D ratio is 7, single head.
2, the production equipment of a kind of non-woven fabric compound economic master batch according to claim 1 is characterized in that: the described first rank double screw extruder discharge end is equipped with the fracture blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910135453A CN101537697A (en) | 2007-07-16 | 2007-07-16 | Production equipment of non-woven fabric compound economic master batch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910135453A CN101537697A (en) | 2007-07-16 | 2007-07-16 | Production equipment of non-woven fabric compound economic master batch |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710025277XA Division CN101121801B (en) | 2007-07-16 | 2007-07-16 | Non-woven fabrics composite economical master batch and its producing method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101537697A true CN101537697A (en) | 2009-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910135453A Pending CN101537697A (en) | 2007-07-16 | 2007-07-16 | Production equipment of non-woven fabric compound economic master batch |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966746A (en) * | 2010-06-23 | 2011-02-09 | 昆山科信橡塑机械有限公司 | Single-double connector for connecting upper flow channel with lower flow channel |
| CN102173003A (en) * | 2010-12-24 | 2011-09-07 | 张启发 | Automatic production line for thermal vulcanized silicon rubber |
| CN102344608A (en) * | 2011-07-23 | 2012-02-08 | 佛山市衡龙科技有限公司 | Composite material special for PP (Polypropylene) spun-bond non-woven fabric |
| CN102357935A (en) * | 2011-08-30 | 2012-02-22 | 佛山市金银河机械设备有限公司 | Automatic continuous production line of liquid silicon rubber |
| CN104626510A (en) * | 2015-01-16 | 2015-05-20 | 湖南盛锦新材料有限公司 | Double-screw extruder suitable for melt-blown nonwoven cloth special material production |
| CN109955458A (en) * | 2019-04-09 | 2019-07-02 | 合肥工业大学 | A kind of preparation device of low volatility resin and preparation method thereof |
| JP7421612B1 (en) | 2022-08-10 | 2024-01-24 | 株式会社シーティーイー | Twin-screw continuous kneading extrusion device |
-
2007
- 2007-07-16 CN CN200910135453A patent/CN101537697A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966746A (en) * | 2010-06-23 | 2011-02-09 | 昆山科信橡塑机械有限公司 | Single-double connector for connecting upper flow channel with lower flow channel |
| CN102173003A (en) * | 2010-12-24 | 2011-09-07 | 张启发 | Automatic production line for thermal vulcanized silicon rubber |
| CN102173003B (en) * | 2010-12-24 | 2013-12-18 | 佛山市金银河智能装备股份有限公司 | Automatic production line for thermal vulcanized silicon rubber |
| CN102344608A (en) * | 2011-07-23 | 2012-02-08 | 佛山市衡龙科技有限公司 | Composite material special for PP (Polypropylene) spun-bond non-woven fabric |
| CN102357935A (en) * | 2011-08-30 | 2012-02-22 | 佛山市金银河机械设备有限公司 | Automatic continuous production line of liquid silicon rubber |
| CN104626510A (en) * | 2015-01-16 | 2015-05-20 | 湖南盛锦新材料有限公司 | Double-screw extruder suitable for melt-blown nonwoven cloth special material production |
| CN104626510B (en) * | 2015-01-16 | 2017-12-01 | 湖南盛锦新材料有限公司 | Suitable for the double screw extruder of melt spraying non-woven fabrics PP Pipe Compound production |
| CN109955458A (en) * | 2019-04-09 | 2019-07-02 | 合肥工业大学 | A kind of preparation device of low volatility resin and preparation method thereof |
| JP7421612B1 (en) | 2022-08-10 | 2024-01-24 | 株式会社シーティーイー | Twin-screw continuous kneading extrusion device |
| WO2024034420A1 (en) * | 2022-08-10 | 2024-02-15 | 株式会社シーティーイー | Biaxial continuous kneading extrusion device |
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Open date: 20090923 |