CN105619750B - The method of work of EVA film extruder with feed two-way regulating function - Google Patents

The method of work of EVA film extruder with feed two-way regulating function Download PDF

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Publication number
CN105619750B
CN105619750B CN201610031648.4A CN201610031648A CN105619750B CN 105619750 B CN105619750 B CN 105619750B CN 201610031648 A CN201610031648 A CN 201610031648A CN 105619750 B CN105619750 B CN 105619750B
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CN
China
Prior art keywords
feed hopper
feed
adjustable plate
feeding cylinder
main barrel
Prior art date
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Application number
CN201610031648.4A
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Chinese (zh)
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CN105619750A (en
Inventor
林金顺
劳马剑
辜爱华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FUJIAN YONGCHUN JIAWEI PLASTIC PACKAGING PRODUCTS CO., LTD.
Original Assignee
Fujian Yongchun Jiawei Plastic Packaging Products Co Ltd
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Priority to CN201610031648.4A priority Critical patent/CN105619750B/en
Publication of CN105619750A publication Critical patent/CN105619750A/en
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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
    • 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
    • B29C48/67—Screws having incorporated mixing devices not provided for in groups B29C48/52 - B29C48/66
    • 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
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
    • 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
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/297—Feeding the extrusion material to the extruder at several locations, e.g. using several hoppers or using a separate additive feeding
    • 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
    • B29C48/55—Screws having reverse-feeding elements
    • 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
    • B29C48/565—Screws having projections other than the thread, e.g. pins
    • 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
    • B29C2948/92085—Velocity
    • B29C2948/92104—Flow or feed rate
    • 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
    • B29C2948/92114—Dimensions
    • B29C2948/92161—Volume or quantity
    • 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
    • B29C2948/92361—Extrusion unit
    • B29C2948/92409—Die; Nozzle zone
    • 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
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • 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
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/926—Flow or feed rate
    • 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
    • B29C2948/92819—Location or phase of control
    • B29C2948/92828—Raw material handling or dosing, e.g. active hopper or feeding device
    • 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
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing
    • 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
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; Nozzle zone
    • 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
    • B29C48/64—Screws with two or more threads
    • 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
    • B29L2007/008—Wide strips, e.g. films, webs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The present invention relates to a kind of method of work for the EVA film extruder for having and being fed two-way regulating function, the EVA film extruder includes main barrel, extrusion screw rod in main barrel and the motor for driving extrusion screw rod to rotate, the feed end of main barrel is provided with feed hopper, feed hopper bottom is made as the downward taper of the vertex of a cone and is formed with the opening at the vertex of a cone, the discharge end of main barrel is provided with die head, feed hopper bottom is connected with additional feeding cylinder, additional feeding cylinder intersects with feed hopper bottom is provided with adjustable plate at openings, one end of adjustable plate is goed deep into the feed hopper and its other end gos deep into additional feeding cylinder, the flow sensor for being used for producing mass flow information is provided with die head exit, being provided with outside feed hopper is used to receive the regulation motor for driving adjustable plate to rotate after mass flow information.The EVA film extruder has the advantages that to significantly alter the requirement for being fed and adapting to molten resin fluctuation to extruder in the short time.

Description

The method of work of EVA film extruder with feed two-way regulating function
Technical field
The present invention relates to a kind of method of work of EVA film extruder, belong to the extrusion technology field of plastics.
Background technology
At present, the encapsulation of solar cell typically uses the vinyl acetate copolymer of ethene one (EVA) glued membrane by solar energy Cell piece is encapsulated, and is bonded together with levels protection materials, constitutes solar cell module.EVA is a kind of typical nothing Advise high-molecular compound, it when heating melting with good wellability, during cooling and solidifying with good flexibility, it is anti-should Power cracking behavior and adhesive property, are that a kind of ideal can be used for the material of solar cell package.
EVA film forming uses extrusion forming process, and whole production line generally includes mixing plant, extrusion equipment, press mold Device, trimming unit and winding device, complete batch mixing, feeding, extrusion, shaping, trimming, winding process.Wherein, extrusion equipment is Major part in whole production line, is made up of extruder and the die head for being arranged at extruder end.Extruder is Screw Extrusion Machine, the top of extruder, which is provided with outside hopper, screw rod, is provided with heater, by the raw material fallen into out of hopper in extruder with spiral shell The conveying of bar and it is heated, plastify it, discharging opening of the molten resin through die head is cast out glued membrane.Glued membrane is through in film pressing device The shaping of pressure roller press mold, then cooling and shaping.
It has been found that being fed by hopper to extruder, mainly by the material self gravitation in hopper to extrusion Machine is fed, and feed changes small, is not suitable for significantly alterring the function being fed to extruder in the short time, is not adapted to molten resin The requirement of fluctuation.
The content of the invention
The technical problem to be solved in the present invention is, in view of the shortcomings of the prior art, proposing to significantly alter in a kind of short time The EVA film extruder with feed two-way regulating function of the requirement of molten resin fluctuation is fed and adapted to extruder Method of work.
The present invention is that the technical scheme for solving above-mentioned technical problem proposition is：It is a kind of that there is feed two-way regulating function The method of work of EVA film extruder, the extruder includes main barrel, the extrusion screw rod in main barrel and crowded for driving Go out the motor of screw rod rotation, the feed end of the main barrel is provided with feed hopper, and it is downward that the feed hopper bottom is made as the vertex of a cone Taper and be formed with the opening at the vertex of a cone, the discharge end of the main barrel is provided with die head, and the feed hopper bottom is connected with Additional feeding cylinder, the additional feeding cylinder intersects with feed hopper bottom is provided with adjustable plate, one end of the adjustable plate at openings Go deep into the feed hopper and its other end gos deep into additional feeding cylinder, being provided with the die head exit is used to produce mass flow It is provided with to be used to receive outside the flow sensor of information, the feed hopper and drives what adjustable plate was rotated after the mass flow information Regulation motor.Described method of work includes：The material produced by regulation motor according to the flow sensor at die head exit Flow information driving adjustable plate is rotated, by adjusting the angle of adjustable plate, and the material parts of feed hopper can be caused to enter additional Material feed drum is interior or make it that material enters in feed hopper in additional feeding cylinder.
It is of the invention to be using the beneficial effect of above-mentioned technical proposal：By being connected with additional feeding cylinder in feed hopper bottom, Additional feeding cylinder intersects with feed hopper bottom is provided with adjustable plate at openings, one end of adjustable plate gos deep into feed hopper and its is another End is goed deep into additional feeding cylinder, is provided with die head exit outside the flow sensor for being used for producing mass flow information, feed hopper Provided with for receiving the regulation motor for driving adjustable plate to rotate after the mass flow information；It is due to what is be fed to main barrel EVA particles, therefore the mass flow information-driven that can be produced by regulation motor according to the flow sensor at die head exit is adjusted Save plate to rotate, by adjusting the angle of adjustable plate, the material parts of feed hopper can be caused to enter in additional feeding cylinder or make Obtain material in additional feeding cylinder to enter in feed hopper, be fed with being significantly alterred in the short time to extruder and adaptation melting tree The advantage of the requirement of fat fluctuation.
The improvement of above-mentioned technical proposal is：The TEMP for being used for producing temperature of charge information is provided with the die head exit Border, which is provided with, outside device, the main barrel is used to receive the heater that heating-up temperature is adjusted after the temperature of charge information.
The improvement of above-mentioned technical proposal is：0.49mm is formed with the adjustable plate raised.
The improvement of above-mentioned technical proposal is：The first analog/digital conversion is in series between the flow sensor and regulation motor Module and the first central processing unit.
The improvement of above-mentioned technical proposal is：The second analog/digital conversion mould is in series between the temperature sensor and heater Block and the second central processing unit.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the structural representation for the EVA film extruder that the embodiment of the present invention has feed two-way regulating function.
Embodiment
Embodiment
The present embodiment have feed two-way regulating function EVA film extruder, as shown in figure 1, including main barrel 1, Extrusion screw rod in main barrel 1 and the motor 2 for driving extrusion screw rod to rotate.The feed end of main barrel 1 is provided with Feed hopper 3, the bottom of feed hopper 3 is made as the downward taper of the vertex of a cone and is formed with the opening at the vertex of a cone, and the discharge end of main barrel 1 is set There is die head 4.
The bottom of feed hopper 3 is connected with additional feeding cylinder 10.Additional feeding cylinder 10 intersects with the bottom of feed hopper 3 to be set at openings There is adjustable plate 5.One end of adjustable plate 5 is goed deep into feed hopper 3 and its other end gos deep into additional feeding cylinder 10.
The exit of die head 4 is provided with the flow sensor 6 for being used for producing mass flow information, and the outside of feed hopper 3, which is provided with, to be used for Receive the regulation motor 7 that driving adjustable plate 5 is rotated after mass flow information.
The exit of die head 4 of the present embodiment is provided with outside the temperature sensor 8 for being used for producing temperature of charge information, main barrel 1 Portion border, which is provided with, is used to receive the heater 9 that heating-up temperature is adjusted after temperature of charge information.
0.49mm is formed with the adjustable plate 5 of the present embodiment raised.
The first analog/digital conversion module and the first center are in series between the flow sensor 6 and regulation motor 7 of the present embodiment Processor.
The second analog/digital conversion module and the second centre are in series between the temperature sensor 8 and heater 9 of the present embodiment Manage device.
The present invention is not limited to above-described embodiment.The technical scheme of all use equivalent substitution formation, all falling within the present invention will The protection domain asked.

Claims (1)

1. a kind of method of work of the EVA film extruder with feed two-way regulating function, the extruder includes main barrel, set In the extrusion screw rod in main barrel and the motor for driving extrusion screw rod to rotate, the feed end of the main barrel is provided with confession Hopper, the feed hopper bottom is made as the downward taper of the vertex of a cone and is formed with the opening at the vertex of a cone, the discharging of the main barrel End is provided with die head, it is characterised in that：The feed hopper bottom is connected with additional feeding cylinder, the additional feeding cylinder and feed hopper bottom Portion, which intersects, is provided with adjustable plate at openings, one end of the adjustable plate gos deep into the feed hopper and its other end gos deep into additional confession It is provided with outside the flow sensor for being used for producing mass flow information, the feed hopper and is provided with barrel, at the die head exit For receiving the regulation motor for driving adjustable plate to rotate after the mass flow information；Described method of work includes：By adjusting The mass flow information-driven adjustable plate rotation that motor is produced according to the flow sensor at die head exit is saved, passes through and adjusts The angle of plate, can cause the material parts of feed hopper to enter in additional feeding cylinder or cause that material enters in additional feeding cylinder In feed hopper.
CN201610031648.4A 2013-10-29 2013-10-29 The method of work of EVA film extruder with feed two-way regulating function Active CN105619750B (en)

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Application Number Priority Date Filing Date Title
CN201610031648.4A CN105619750B (en) 2013-10-29 2013-10-29 The method of work of EVA film extruder with feed two-way regulating function

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Application Number Priority Date Filing Date Title
CN201610031648.4A CN105619750B (en) 2013-10-29 2013-10-29 The method of work of EVA film extruder with feed two-way regulating function
CN201310519205.6A CN103587105B (en) 2013-10-29 2013-10-29 There is the EVA film extruder of feed two-way regulating function

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Publication number Priority date Publication date Assignee Title
CN115891097B (en) * 2022-12-06 2023-06-09 华南农业大学 Energy-saving extrusion molding equipment for high-performance wood-plastic composite material by one-step method

Citations (2)

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Publication number Priority date Publication date Assignee Title
JPS61293812A (en) * 1985-06-22 1986-12-24 Toyota Motor Corp Mixed feeding device of material in in-line molding machine
CN101623916A (en) * 2008-07-11 2010-01-13 许世雄 Plastic pressure feeder

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Publication number Priority date Publication date Assignee Title
JPH05337945A (en) * 1992-06-08 1993-12-21 Nitsusui Kako Kk Master batch supplying automatic device
JP3821795B2 (en) * 2002-10-15 2006-09-13 株式会社マルヤス Raw material supply equipment
CN102744848A (en) * 2012-06-27 2012-10-24 苏州烁尔新材料有限公司 Ethylene-vinyl acetate (EVA) film extruder
CN203004044U (en) * 2012-09-21 2013-06-19 福建省卓越鸿昌建材装备股份有限公司 Hopper with adjustable discharge outlet
CN203622926U (en) * 2013-10-29 2014-06-04 苏州泰科尼光伏材料有限公司 EVA (ethylene-vinyl acetate copolymer) film extruder with bidirectional feed adjustment function

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61293812A (en) * 1985-06-22 1986-12-24 Toyota Motor Corp Mixed feeding device of material in in-line molding machine
CN101623916A (en) * 2008-07-11 2010-01-13 许世雄 Plastic pressure feeder

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CN103587105B (en) 2016-01-20
CN103587105A (en) 2014-02-19

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