CN106626343A - Ultra-wide polyvinyl chloride thin film blow-molding device - Google Patents
Ultra-wide polyvinyl chloride thin film blow-molding device Download PDFInfo
- Publication number
- CN106626343A CN106626343A CN201611077577.8A CN201611077577A CN106626343A CN 106626343 A CN106626343 A CN 106626343A CN 201611077577 A CN201611077577 A CN 201611077577A CN 106626343 A CN106626343 A CN 106626343A
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- Prior art keywords
- polyvinyl chloride
- core
- melt
- ultra
- wide
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
-
- 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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
-
- 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
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- 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
-
- 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
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
-
- 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
- B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
-
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
- B29C48/865—Heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/06—PVC, i.e. polyvinylchloride
-
- 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
Abstract
The invention discloses an ultra-wide polyvinyl chloride thin film blow-molding device and belongs to the field of plastic machinery. The ultra-wide polyvinyl chloride thin film blow-molding device is mainly composed of n precision polyvinyl chloride extruders, a film blowing machine head, a film tube, a reversed-V-shaped plate, traction rollers, guiding rollers, air rings and a rolling-up device. Distribution runners and spiral runners are evenly distributed on the cylindrical outer surface of a core mold. The center of the core mold is provided with a venthole. Polyvinyl chloride is subjected to melt plastification through the n precision polyvinyl chloride extruders to be a melt, and the melt enters between the core mold and a core mold sleeve. N melt distribution inlets corresponding to the core mold sleeve are formed in the lower portion of the core mold, and each melt distribution inlet is evenly distributed into the m spiral runner through the corresponding distribution runner. Parts of the n*m spiral runner overlap with one other to converge upward to be annular mouth model gaps. Different melt inlets are evenly distributed, and appropriate spiral lead angles of the spiral runners are selected, so that overheating decomposition of the polyvinyl chloride in the flowing process is avoided, and non-uniformity, caused by shortening of the annular runner length, of the thickness of annular performs is compensated.
Description
Technical field
The present invention relates to a kind of ultra-wide polyvinyl chloride (PVC) film blow molding apparatus, for ultra-wide, (fabric width is more than
5-6 rice) polyvinyl chloride film preparation, belong to field of plastic machinery.
Background technology
Polyvinyl chloride is unique non-petroleum dependent form resin in five big general-purpose plastics, is hindered extensively, certainly with raw material sources
Combustion, good heat preservation performance, it is cheap the advantages of.The Apparent con- sumption of polyvinyl chloride in 2014, up to 16,000,000 tons, is to be only second to poly- second
The second largest general-purpose plastics of alkene.Film is the important product form of polyvinyl chloride, is widely used in the fields such as medical treatment, packaging, special
It, due to polyvinyl chloride good heat insulating, good translucency, good weatherability, lower-price characteristic, is to prepare agriculture greenhouse film not to be
Optimal material.Modern agriculture is required more than 20 meters the fabric width of awning film mostly, and the polyvinyl chloride that at present prepared by technology
Film fabric width is up to 5-6 rice so that application of the polyvinyl chloride in agriculture greenhouse film field is severely limited.
The version of head mainly has core method and the big class of spiral flow Dow process two in existing blown film device.Polyvinyl chloride heat
Stability is poor, and the easy thermal decomposition excessively of process is carbonized and produces hydrogen-chloride etching process equipment, and technique controlling difficulty is very big.Polychlorostyrene
Ethene prepares wide cut and the technical difficulty of ultra-wide film is as follows：(1) core method melt flow length, is suitable for polyvinyl chloride film
Preparation, but be difficult to ensure that the uniformity of ring flow, be only suitable for the blow molding of little fabric width polyvinyl chloride film；(2) spiral
Runner method can effectively ensure the uniformity of ring flow by the annular channel of long flow process, be adapted to the system of big fabric width film
Standby, existing more than 20 meters of polyethylene film and ethene-vinyl acetate polymers (EVA) film are prepared using this version
, but because its flow process is very long, polyvinyl chloride is easily decomposed phenomenon in runner, thus this method is not suitable for polyvinyl chloride
The production of film.Patent ZL200910180067.7 discloses a kind of large-scale scale polymer product extrusion molding device and technique, main
If melt planet pump is divided into into multiply by one stream, re-segmenting enters head branch flow passage with uniform pressure, to realize
The uniformity of high-precision control stream, but melt not only needs to also need to flow through point through the distribution of melt planet pump in device
Branch flow passage, the flow process reached between mouth mold from after extruder is longer, is not suitable for the production of polyvinyl chloride film.
Accurate polyvinyl chloride extruder is that precise control is carried out to screw speed by servomotor, realizes extrusion polychlorostyrene second
The yield and pressure remained steady of alkene, it is shorter that its plasticizing process compares general extruder, it is ensured that what polyvinyl chloride was plastified completely
Do not decompose simultaneously.
The content of the invention
It is an object of the invention to overcome above technological deficiency, there is provided a kind of ultra-wide polyvinyl chloride film blow molding dress
Put, the processing technology for being suitable for pvc material is required and realizes the preparation of ultra-wide polyvinyl chloride film, i.e., comprehensive spiral
The advantage of runner and accurate polyvinyl chloride extruder, short distance completes evenly distributing for melt.
In order to realize object above, the present invention is employed the following technical solutions：A kind of ultra-wide polyvinyl chloride film is blow molded into
Type device, mainly by n platforms precision polyvinyl chloride extruder, blown-film die, membrane tube, collapser, carry-over pinch rolls, guide roller, vane and
Wrap-up is constituted, and has core and core sleeve in blown-film die, and the gap between core and core sleeve is the passage of melt,
Distribution runner and helical flow path are evenly equipped with the cylindrical outer surface of core, there are passage, n platforms precision polyvinyl chloride in the center of core
Extruder has corresponding with accurate polyvinyl chloride extruder by flange and the core sleeve connection of blown-film die on core sleeve
N melt inlet, polyvinyl chloride becomes melt into core and core Jing after n platforms precision polyvinyl chloride extruder fusion plastification
Between sleeve；Core bottom arranges n melt corresponding with core sleeve and distributes entrance, and the cylindrical outer surface of core is provided with and melts
The corresponding n components of body entrance match somebody with somebody runner, and each the allocated uniform flow passage of melt distribution entrance is distributed into m head helical flow paths, in core
N × m heads helical flow path part is overlapped on mould merges into upwards annular die gap；Melt is Jing after the extrusion of annular die gap
Move upwards in the presence of carry-over pinch rolls, passage and the lower inflation of vane effect form membrane tube, membrane tube Jing collapser in Jing cores
Draw in, under guide roller effect wrap-up and final molding are entered.
A kind of ultra-wide polyvinyl chloride film blow molding apparatus according to the present invention, the quantity of helical flow path is preferably 4
Integral multiple, the lead angle of helical flow path is 30-60 °, the corresponding central angle of chord length of helical flow path within 180 °, specifically
Determined by handpiece size, it is ensured that material will not decompose because thermal history is long and be limited.
A kind of ultra-wide polyvinyl chloride film blow molding apparatus according to the present invention, melt inlet, distribution runner and spiral shell
Eddy flow road is all located on core, it is to avoid runner junction is rough and cause buildup to be decomposed when being arranged on different parts.
A kind of ultra-wide polyvinyl chloride film blow molding apparatus according to the present invention, it is characterised in that：It is arranged on core
The accurate adjustable accurate polyvinyl chloride dedicated extruder of the external flow of melt inlet of bottom, each melt inlet connects an essence
Close polyvinyl chloride extruder, all porch flow into the melt flow of distribution runners and adjust to identical.
A kind of ultra-wide polyvinyl chloride film blow molding apparatus according to the present invention, distribute the sectional area phase everywhere of runner
Same or edge is extruded upwards direction and is slightly compressed, and sectional area of the melt inlet sectional area score with runner for being arranged on core bottom is omited
It is big or identical.
A kind of ultra-wide polyvinyl chloride film blow molding apparatus according to the present invention, are arranged on core sleeve heater
Can be electrical heating, or electromagnetic induction heating.
During work, core and core sleeve are heated to temperature required, and ensure the uniformity of temperature.Open extruder,
Per platform, accurate polyvinyl chloride extruder all distributes entrance and distribution runner and is fed forward the material for having plastified simultaneously by melt
It is even to be distributed into m parts and enter to helical flow path.Logistics Jing helical flow path is fed forward and topmost forms polyvinyl chloride in core
Blowing material base.It is in uneven thickness if there is material base ring, can be solved by the flow of adjustment precision polyvinyl chloride extruder
Certainly.
From above technical scheme, the present invention has the advantage that compared with prior art：(1) play helical flow path to exist
The unique advantage of blow molding super large fabric width film, but by evenly distributing different entrance and choosing appropriate helical flow path
Lead angle make helical flow path contraction in length avoid polyvinyl chloride in flow process cross thermally decompose, Jing test understand, spiral shell
Rotation flow channel length can shorten to original 40-65%；(2) by accurate polyvinyl chloride extruder and evenly distribute runner realize it is right
The Effective Regulation of mass flow in helical flow path, makes up the thickness of the annular material base brought due to shortening annular flow channel length not
Uniformity.
Description of the drawings
Fig. 1 is a kind of process chart of ultra-wide polyvinyl chloride film blow molding apparatus according to the present invention；
Fig. 2 is a kind of core flow passage structure figure of ultra-wide polyvinyl chloride film blow molding apparatus according to the present invention；
Fig. 3 is a kind of blown-film die and extruder of ultra-wide polyvinyl chloride film blow molding apparatus according to the present invention
Distribution schematic diagram.
In figure：1- precision polyvinyl chloride extruders, 2- blown-film dies, 3- membrane tubes, 4- collapsers, 5- carry-over pinch rolls, 6- is oriented to
Roller, 7- vanes, 8- wrap-ups, 9- cores, 10- core sleeves, 11- helical flow paths, 12- distribution runners, 13- passages, 14-
Melt distributes entrance.
Specific embodiment
As shown in figure 1, a kind of ultra-wide polyvinyl chloride film blow molding apparatus, are mainly squeezed by n platforms precision polyvinyl chloride
Go out machine 1, blown-film die 2, membrane tube 3, collapser 4, carry-over pinch rolls 5, guide roller 6, vane 7 and wrap-up 8 to constitute, blown-film die 2
Inside have core 9 and a core sleeve 10, the gap between core 9 and core sleeve 10 for melt passage, the cylindricality appearance of core 9
Distribution runner 12 and helical flow path 11 are evenly equipped with face, there are passage 13, n platforms precision polyvinyl chloride extruder 1 in the center of core 9
It is connected with the core sleeve 10 of blown-film die 2 by flange (not shown), there is n melt inlet on core sleeve 10, is gathered
Vinyl chloride becomes melt and enters between core 9 and core sleeve 10 Jing after the fusion plastification of n platforms precision polyvinyl chloride extruder 1；Core 9
Bottom arranges n and distributes entrance 14 with the corresponding melt of core sleeve 10, and the cylindrical outer surface of core 9 is provided with and enters with melt
The corresponding n components of mouth match somebody with somebody runner 12, and each the allocated runner 12 of melt distribution entrance 14 evenly distributes into m heads helical flow path 11,
N × m heads helical flow path 11 merges into upwards annular die gap on core 9；Melt is leading Jing after the extrusion of annular die gap
Move upwards in the presence of pick-up roll 5, passage 13 and the lower inflation of the effect of vane 7 form membrane tube 3, the Jing herringbones of membrane tube 3 in Jing cores 9
Plate 4 draws in, and in the case where guide roller 6 is acted on wrap-up 8 and final molding are entered.
A kind of ultra-wide polyvinyl chloride film blow molding apparatus according to the present invention, as shown in Fig. 2 each melt distribution
Quantity m of the allocated rear screw runner 11 of runner 12 of entrance 14 is taken as 4, and lead angle is generally 30-60 °, and the anglec of rotation is general
Within 180 °, in a circumferential direction phase mutual is overlapped helical flow path 11, is specifically determined by handpiece size, it is ensured that material is not warm to be gone through
The long decomposition of journey is limited, and when lead angle is 45 °, the length of helical flow path 11 can be the 50% of normal spiral runner.
A kind of ultra-wide polyvinyl chloride film blow molding apparatus according to the present invention, melt inlet, the distribution and of runner 12
Helical flow path 11 is all located on core 9, it is to avoid runner junction is rough and cause buildup to be decomposed when being arranged on different parts.
A kind of ultra-wide polyvinyl chloride film blow molding apparatus according to the present invention, are arranged on the bottom of core sleeve 10
The accurate adjustable polyvinyl chloride dedicated extruder 1 of the external flow of melt inlet, each melt inlet connects an accurate polychlorostyrene second
Alkene extruder 1, the motor of accurate polyvinyl chloride extruder 1 adopts servomotor, it is possible to achieve by the accurate polyvinyl chloride of adjustment
Adjusting the thickness of corresponding film, all porch flow into the melt flow of distribution runners 12 to the rotating speed of the motor of extruder 1
Amount is adjusted to identical, and quantity n of accurate polyvinyl chloride extruder 1 is 9 shown in Fig. 3.
A kind of ultra-wide polyvinyl chloride film blow molding apparatus according to the present invention, distribute the sectional area of runner 12 everywhere
Identical or edge is extruded upwards direction and is slightly compressed, and runner is matched somebody with somebody in the melt distribution entrance 14 sectional area score for being arranged on the bottom of core 9
12 sectional area sum is bigger or identical, and each melt distributes the section of the sectional area than corresponding helical flow path 11 of entrance 14
Product sum is bigger, and depth of the helical flow path 11 along melt outlet direction shoals gradually, is zero in its end depth.
A kind of ultra-wide polyvinyl chloride film blow molding apparatus according to the present invention, are arranged on core sleeve 10 plus hot charging
Putting can be electrical heating, or electromagnetic induction heating.
During work, core 9 and core sleeve 10 are heated to temperature required, and ensure the uniformity of temperature.Open accurate
Polyvinyl chloride extruder 1, per platform, accurate polyvinyl chloride extruder 1 all distributes entrance 14 and distribution runner 12 and will plastify by melt
Good material is fed forward and evenly distributes into m parts and enter to helical flow path 11.Logistics Jing helical flow path 11 is fed forward simultaneously
Polyvinyl chloride blowing material base is topmost formed in core 9.It is in uneven thickness if there is material base ring, can be poly- by adjustment precision
The flow of vinyl chloride extruder 1 is resolved.
Claims (5)
1. a kind of ultra-wide polyvinyl chloride film blow molding apparatus, mainly by n platforms precision polyvinyl chloride extruder, inflation film manufacturing machine
Head, membrane tube, collapser, carry-over pinch rolls, guide roller, vane and wrap-up composition, there is core and core sleeve, core in blown-film die
Gap between mould and core sleeve is the passage of melt, it is characterised in that：Distribution stream is evenly equipped with the cylindrical outer surface of core
There is passage at road and helical flow path, the center of core, and n platforms precision polyvinyl chloride extruder is by flange and the core of blown-film die
Sleeve connection, there is the n melt inlet corresponding with accurate polyvinyl chloride extruder, polyvinyl chloride Jing n platforms essence on core sleeve
Become melt after close polyvinyl chloride extruder fusion plastification to enter between core and core sleeve；Core bottom arranges n and core
The corresponding melt of sleeve distributes entrance, and the cylindrical outer surface of core is provided with n components corresponding with melt inlet with runner, each
The allocated uniform flow passage of melt distribution entrance is distributed into m head helical flow paths, n × m heads helical flow path part phase mutual respect on core
It is folded to merge into annular die gap upwards；Melt is moved upwards Jing after the extrusion of annular die gap in the presence of carry-over pinch rolls, Jing
Passage and the lower inflation of vane effect form membrane tube in core, and membrane tube Jing collapser draws in, and under guide roller effect winding is entered
Device and final molding.
2. a kind of ultra-wide polyvinyl chloride film blow molding apparatus according to claim 1, it is characterised in that：Spiral flow
The lead angle in road is 30-60 °, and the corresponding central angle of chord length of helical flow path is within 180 °.
3. a kind of ultra-wide polyvinyl chloride film blow molding apparatus according to claim 1, it is characterised in that：It is arranged on
The accurate adjustable accurate polyvinyl chloride extruder of the external flow of melt inlet of core bottom, the electricity of accurate polyvinyl chloride extruder
Machine is servomotor, and all porch flow into the melt flow of distribution runners and adjust to identical.
4. a kind of ultra-wide polyvinyl chloride film blow molding apparatus according to claim 1, it is characterised in that：Distribution stream
The sectional area in road is identical everywhere or slightly compresses along direction is extruded upwards, is arranged on the melt inlet sectional area score of core bottom
Sectional area with runner is bigger or identical.
5. a kind of ultra-wide polyvinyl chloride film blow molding apparatus according to claim 1, it is characterised in that：Each melts
The sectional area of body distribution entrance is more bigger than the sectional area sum of corresponding helical flow path, and helical flow path is along melt outlet direction
Depth shoal gradually, be zero in its end depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611077577.8A CN106626343A (en) | 2016-11-29 | 2016-11-29 | Ultra-wide polyvinyl chloride thin film blow-molding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611077577.8A CN106626343A (en) | 2016-11-29 | 2016-11-29 | Ultra-wide polyvinyl chloride thin film blow-molding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106626343A true CN106626343A (en) | 2017-05-10 |
Family
ID=58814117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611077577.8A Pending CN106626343A (en) | 2016-11-29 | 2016-11-29 | Ultra-wide polyvinyl chloride thin film blow-molding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106626343A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023015651A1 (en) * | 2021-08-13 | 2023-02-16 | 重庆沃特智成新材料科技有限公司 | Film blow-molding device |
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| US20040022886A1 (en) * | 2002-08-02 | 2004-02-05 | Sagar Surendra M. | Extrusion die with supply groove transfer |
| CN202097927U (en) * | 2011-06-03 | 2012-01-04 | 浙江康润机械科技有限公司 | Runner structure of co-extrusion composite mold spiral body for balancing material flow |
| CN203246077U (en) * | 2013-04-23 | 2013-10-23 | 宜兴市光辉包装材料有限公司 | Arc-shaped connection device of PVC film blowing machine |
| US20140159275A1 (en) * | 2011-07-20 | 2014-06-12 | Plastika Kritis S.A. | Concentric co-extrusion die and a method of extruding a multilayer thermoplastic film |
| CN206394010U (en) * | 2016-11-29 | 2017-08-11 | 中绿英科（北京）科技有限公司 | A kind of ultra-wide polyvinyl chloride film blow molding apparatus |
-
2016
- 2016-11-29 CN CN201611077577.8A patent/CN106626343A/en active Pending
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| US20040022886A1 (en) * | 2002-08-02 | 2004-02-05 | Sagar Surendra M. | Extrusion die with supply groove transfer |
| CN202097927U (en) * | 2011-06-03 | 2012-01-04 | 浙江康润机械科技有限公司 | Runner structure of co-extrusion composite mold spiral body for balancing material flow |
| US20140159275A1 (en) * | 2011-07-20 | 2014-06-12 | Plastika Kritis S.A. | Concentric co-extrusion die and a method of extruding a multilayer thermoplastic film |
| CN203246077U (en) * | 2013-04-23 | 2013-10-23 | 宜兴市光辉包装材料有限公司 | Arc-shaped connection device of PVC film blowing machine |
| CN206394010U (en) * | 2016-11-29 | 2017-08-11 | 中绿英科（北京）科技有限公司 | A kind of ultra-wide polyvinyl chloride film blow molding apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023015651A1 (en) * | 2021-08-13 | 2023-02-16 | 重庆沃特智成新材料科技有限公司 | Film blow-molding device |
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