CN104385556A - BOPP extruding system - Google Patents

BOPP extruding system Download PDF

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Publication number
CN104385556A
CN104385556A CN201410555263.9A CN201410555263A CN104385556A CN 104385556 A CN104385556 A CN 104385556A CN 201410555263 A CN201410555263 A CN 201410555263A CN 104385556 A CN104385556 A CN 104385556A
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CN
China
Prior art keywords
bopp
extrusion system
melt
filter
extruder
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CN201410555263.9A
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Chinese (zh)
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余陈
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Individual
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Individual
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Priority to CN201410555263.9A priority Critical patent/CN104385556A/en
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/69—Filters or screens for the moulding material
    • 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
    • B29C2948/92504—Controlled parameter
    • B29C2948/92514—Pressure
    • 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
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene

Abstract

The invention relates to a BOPP extruding system, and belongs to the field of machinery. The BOPP extruding system comprises a screw extruder, wherein the screw extruder comprises a cylinder body and an outlet in the tail end of the cylinder body; the screw extruder also comprises a filter; the filter is used for filtering a molten material outputted by the outlet of the cylinder body; the pressure of melt at the inlet of the filter is 230-250 Pa, and the temperature of the melt is 270-280 DEG C. The BOPP extruding system can effectively reduce coking and carbonization and prolong the cleaning time interval.

Description

BOPP extrusion system
Technical field
The present invention relates to mechanical field, particularly, relate to BOPP extrusion system.
Background technology
Bidirectional stretching polypropylene film production line is a kind of uninterrupted streamline produced continuously introduced from Europe, it comprises raw material system, extrusion system, tensioning system and traction winding system, wherein extrusion system is by the raw material extruded film head of screw rod by melting, then becomes very thin film by biaxial tension.No matter be continuous print or discontinuous bidirectional stretching polypropylene film production line, in order to produce qualified BOPP matt film, in general, needing to cause film gauge variation to increase about running half a year, shutting down and cleaning.Although the shutdown intervals of half a year is not short, each shutdown is unfavorable for the steady quality of bidirectional stretching polypropylene film.
 
Summary of the invention
The invention provides a kind of BOPP extrusion system, the coking carbonization on extrusion die can be reduced, for continuous or discrete bidirectional stretching polypropylene film production line, also can be used for the BOPP extrusion system using masterbatch.
BOPP extrusion system, it is characterized in that, comprise screw extruder, described screw extruder comprises the delivery outlet of cylindrical shell and barrel tip, described BOPP extrusion system also comprises filter, the fused materials that described filter exports for the delivery outlet of filtration barrel body, described filter inlet melt pressure is 230-250 handkerchief, melt temperature is 270-280 degree Celsius.
Filter inlet melt pressure is increased to 230-250 handkerchief by described filter.
The screen pack of more than 380 orders is set in described filter.
Described screw extruder comprises the delivery outlet of cylindrical shell and barrel tip, described BOPP extrusion system also comprises melt pipe, the fused materials that described melt pipe exports for carrying the delivery outlet of cylindrical shell, melt pressure is increased to 230-250 handkerchief by described melt pipe.
By reduce melt in melt pipe by cross-sectional area, filter inlet melt pressure is increased to 230-250 handkerchief.
In described melt pipe, mixing facilities is set.
Described mixing facilities is static mixer.
Described screw extruder comprises cylindrical shell, arranges driving shaft in cylindrical shell, driving shaft is arranged and has at least two group screwing elements, it is characterized in that, described driving shaft also comprises at least one group of mixing elements, described mixing elements, described mixing elements comprises several mixing dish.
Described several mixing dish is with 45 degree of seamless stagger arrangement.
The purposes of described BOPP extrusion system in preparation delustring or colored BOPP.
Be well beyond expectation, adopt above-mentioned technical scheme, extend Clean after every, can directly use the raw material of delustring masterbatch or color masterbatch to produce, the delustring obtained or colorful functional masterbatch bidirectional stretching polypropylene film have the performance being not less than and using masterbatch.Stop cleaning interval 50%-70% can be extended.Raising melt pressure and melt temperature can extend Clean after every 90%-120%.
Found through experiments, adopt mixing elements at least 3 group of nearly oval cross section mixing dish, improve melt pressure and melt temperature, mixing facilities is increased in melt pipe, greatly can improve the dispersion of masterbatch, BOPP extrusion system is made can directly to use masterbatch raw material to produce, reduce the ramp-up rate of the transverse gage deviation of extruder die head, extend Clean after every 120%-180%.
 
Accompanying drawing explanation
Fig. 1 is that BOPP extrudes flow chart
Fig. 2 is mixing elements, and stagger arrangement angle is 60 degree.
Fig. 3 is mixing elements, and stagger arrangement angle is 45 degree.
 
Detailed description of the invention
The invention provides a kind of BOPP extrusion system, the coking carbonization on extrusion die can be reduced, for continuous or discrete bidirectional stretching polypropylene film production line, also can be used for the BOPP extrusion system using masterbatch.
BOPP extrusion system, comprise screw extruder, described screw extruder comprises the delivery outlet of cylindrical shell and barrel tip, described BOPP extrusion system also comprises filter, described filter is for filtering the fused materials exported at the delivery outlet of cylindrical shell, and described filter inlet melt pressure is 230-250 handkerchief, melt temperature is 270-280 degree Celsius.
BOPP extrusion system, comprise screw extruder, described screw extruder comprises the delivery outlet of cylindrical shell and barrel tip, and described BOPP extrusion system also comprises melt pipe, the fused materials that described melt pipe exports for carrying the delivery outlet of cylindrical shell, arranges mixing facilities in described melt pipe.
BOPP extrusion system, comprise screw extruder, described screw extruder comprises cylindrical shell, arranges driving shaft in cylindrical shell, driving shaft is arranged and has at least two group screwing elements, it is characterized in that, described driving shaft also comprises at least one group of mixing elements, described mixing elements, described mixing elements comprises several mixing dish, the seamless stagger arrangement at a certain angle of several mixing dish, the cross section of described mixing dish is near oval.
The present inventor is through a large amount of research experiments, and find that the coking carbonization of bidirectional stretching polypropylene film is the principal element of shutting down, slow down coking carbonization can extend shutdown intervals, on the unsubstantial impact of the quality of bidirectional stretching polypropylene film.For the extruder using masterbatch, because masterbatch is through once extruding, secondary extrudes rear polyolefin due to high temperature, and polyolefin there occurs more coking carbonization, makes coking carbonization more easily appears in extruder die head.Especially in bidirectional stretching polypropylene film production process, color masterbatch or delustring masterbatch are all 100% directly to use, and use amount is lower simultaneously, and through multi-layer co-extruded, coking carbonization is easier to be occurred on die head.The present invention obtains based on having found the problems referred to above.
In dispersion mixed process, under the viscous drag that flow field produces, the solid additive of bulk is broken for less particle by mixing elements; Larger particle, through the filtration of extruder, finally makes short grained ion enter melt pipe, and the final particle of solid phase is under the effect of flow field, in melt pipe, produce distributed rendering, mixing is more even, decreases chemical reaction in whole process, enhance physical dispersion, decrease chemical reaction.The master batch preparation process extruded with secondary unlike, generation power-chemical action between polymer, reinforcing filler, solids is utilized in major part master batch preparation process, in the process that secondary is extruded, solids disperse again, power-chemical action is redistributed, thus obtain better dispersion, but the chemical action in secondary extrusion all can strengthen coking carbonization, secondary is extruded and has coking carbonization faster.
Screw extruder, can select single screw extrusion machine or double screw extruder, preferred single screw extrusion machine.Screw extruder comprises cylindrical shell, arranges driving shaft in cylindrical shell, and driving shaft is driven by driver module, and described barrel front end arranges charging aperture, driving shaft comprises at least one group of supply unit and at least one group of mixing unit.
Supply unit has the effect of convey materials, is generally to have forward or reverse spiral fluted cylinder.
Screw extruder generally has the heater for cylindrical shell heating.
BOPP extrusion system, comprise screw extruder, described screw extruder comprises the delivery outlet of cylindrical shell and barrel tip, described BOPP extrusion system also comprises filter, the fused materials that described filter exports for the delivery outlet of filtration barrel body, described filter inlet melt pressure is 230-250 handkerchief, melt temperature is 270-280 degree Celsius.Melt temperature and melt pressure are all draw the checkout gear detections such as the melt temperature on production line and melt force sensor to obtain by BOPP is two.
Melt temperature is increased to 270-280 degree Celsius, and filter inlet melt pressure is 230-250 handkerchief, can improve filter inlet melt pressure to 230-250 handkerchief by arranging of filter, as, can by arranging the screen pack of more than 380 orders in filter, e.g., particularly, 390 orders, 400 orders, 410 orders, 420 orders, 430 orders, 440 orders, 450 orders, 460 orders, 500 orders, 570 orders, 600 orders, 700 orders.Certainly, be not limited to said method, the setting of other any filters, making to improve arranging of filter inlet melt pressure is all that the present invention conceives, as changed melt flow channel in small filter etc.Other raising filter inlet melt pressure methods well known to those skilled in the art are not repeated herein.
BOPP extrusion system, comprise screw extruder, described screw extruder comprises the delivery outlet of cylindrical shell and barrel tip, described BOPP extrusion system also comprises melt pipe, the fused materials that described melt pipe exports for carrying the delivery outlet of cylindrical shell, arranges mixing facilities in described melt pipe.Specifically he, mixing facilities can be the device that agitating device etc. can change arbitrarily melt flows, and preferably, mixing facilities of the present invention is static mixer.
BOPP extrusion system, comprise screw extruder, described screw extruder comprises cylindrical shell, in cylindrical shell, driving shaft is set, driving shaft is arranged there are at least two group screwing elements, it is characterized in that, described driving shaft also comprises at least one group of mixing elements, described mixing elements, described mixing elements comprises several mixing dish, and several mixing dish is with 45 degree of seamless stagger arrangement.The screw element of miter angle is optimum for the melting effect of PP, PE by experiment.
The purposes of described BOPP extrusion system in preparation delustring or colored BOPP.Using function sexupara material is needed in other BOPP such as delustring or colour, in existing method, adopt functional master batch, generation power-chemical action between polymer, reinforcing filler, solids is utilized in major part master batch preparation process, in the process that secondary is extruded, solids disperse again, power-chemical action is redistributed, thus obtain better dispersion, but the chemical action in secondary extrusion all can strengthen coking carbonization, secondary is extruded there is coking carbonization faster.BOPP extrusion system of the present invention containing in the BOPP of functional masterbatch in preparation, adopts the raw material of functional master batch directly to produce, can effectively reduce coking carbonization.
Functional masterbatch of the present invention, be not limited to delustring masterbatch, should comprise any raw material needing previously prepared one-tenth masterbatch because of bad dispersibility or other reasons, concrete also comprises colored masterbatch, antistatic masterbatch, antifogging master batch, anti-stick even masterbatch, pearly-lustre masterbatch.
BOPP adopts a three-layer co-extrusion method i.e. main extruder (main extruder) and two auxiliary extruders (coextruder) by extruding slab after trilamellar membrane head, then carry out longitudinal and transverse biaxial tension to form, i.e. ABC tri-layers of laminated film.Wherein A, C are that top layer is generally thick at 0.6-1um, B is that sandwich layer is generally thick at 10-50um, two subsidiary engines are mainly single screw extrusion machine, major function is by the raw materials melt on top layer, filters, is transported to two surfaces of three layers of die head, producing BOPP matt film is, with auxiliary 1 extruder, the delustring masterbatch of 100% is extruded the top layer delivering to die head, the production of delustring masterbatch be functional master batch producer by double screw extruder by PP, PE two kinds of mixing one-tenth of raw material.
Germany Bruckner company BOPP is two draws production-line technique flow process as accompanying drawing 1, raw material major ingredient is polypropylene (PP) homopolymers, additive has antioxidant, heat stabilizer, slipping agent etc., some kind film also will add heat-sealing material on top layer, if major ingredient humidity more also must carry out heat drying to major ingredient.Extruder (Extruder) extrusion carries out melting to main materials and auxiliary materials exactly, and mixing and metering, also will filter to prevent foreign material from flowing out together to melt before extrusion, in stretching below, produce rupture of membranes.Melt enters slab unit after die head is extruded, and is attached on sharp cooling roll by air knife.That the chilled water flowed carries out chilling to sheet material and reaches the object of molecular crystalline, orientation inside and outside sharp cooling roll.The thin slice cooled down enters vertical machine drawing (MDO) after being dewatered to its surface by the air knife that dewaters.Vertical machine drawing forms primarily of the roller of any surface finish, speed below compared with before linear velocity large, be preheating to the thin slice of uniform temperature after vertical machine drawing, its longitudinally carried out about five times draw the second month in a season, then transverse stretching machine (TDO) is entered, transverse stretching machine Film clamp (clip) entreats thin slice edge to make it carry out cross directional stretch, the general 7-10 of draw ratio laterally broadening by the track of definite shape, in transverse stretching machine, carried out preheating, stretching, thermal finalization.Carry out cooling through draw-gear again from the horizontal film pulled out, thickness measuring and sided corona treatment.Sided corona treatment is the printing and the rolling that make the increase of film surface tension force be convenient to film, in hauling machine, also will carry out static elimination process, enters winder (winder) from pulling out rear film.Be wound into large volume film volume, by lifting appliance, film is rolled into Ageing Treatment frame again, general Ageing Treatment frame will keep temperature 25-30 degree Celsius, humidity 50%-70%, carry out cutting (slitting) after the Ageing Treatment of three days, make it become to meet the specification product of customer requirement.Divide after cutting and also will test to product and pack.Film storage environment also has certain requirement, and temperature should not higher than 35 DEG C.
Calibrator device: the Beta gamma thickness gage produced by German RADIOMETER company, width can reach 7 meters, radioactive source Pml47.Judge whether to need stop cleaning by the transverse gage deviation 2-sigma value measuring film.
The present invention is that extruding of minimizing functional master batch producer is mixing, directly PP, PE two kinds of raw materials are added auxiliary 1 extruder and produce BOPP matt film, but because single screw extrusion machine only has the function of conveying, PP, PE two kinds of raw materials are difficult to mix, auxiliary 1 extrusion system must be transformed in order to reach qualified extinction layer, being effective by following three kinds of methods:
Transform the screw rod in auxiliary 1 single screw extrusion machine, the screw element of three groups of miter angles is increased at melt zone, strengthen the melting of PP, PE, single screw extrusion machine only has the function of melt conveying, strengthen PP, PE raw materials melt and must increase the screw element having mixing function, the screw element of miter angle is optimum for the melting effect of PP, PE by experiment.
Transform auxiliary 1 filter, the pressure of existing filter filter inlet when delustring masterbatch melt temperature reaches 270 degree is at 200 handkerchiefs, melt temperature continues to raise rear pressure and drops to 190 handkerchiefs on the contrary, cause melt also not mix and just arrive die head by filter, sheet can't meet the quality requirement, melt flow channel in filter mainly changes little by method, screen pack encryption reaches more than 400 orders, when guaranteeing that melt temperature reaches 270-280 degree Celsius, melt pressure is more than 230 handkerchiefs and will reach melt temperature raised pressure along with rising, guarantee that melt has the pressure of more than 230 handkerchiefs in the filter, by high pressure and close screen pack by PP, the further melting of PE melt.
Transform auxiliary 1 extrusion machine fused mass conveyance conduit, increase by one group of static mixer, allow PP, PE melt of high temperature, high pressure act on by static static mixer in conveyance conduit the effect that further melting reaches delustring masterbatch.
Adopt 3 kinds of above-mentioned methods, by mixing by particle dispersion, filter under aforesaid HTHP, disperse further in melt pipe, unexpectedly, greatly reduce coking carbonization.Substantially prolongs downtime.
 
Specific embodiment
Comparative example 1
Germany Bruckner company BOPP is two draws production line, technological process as accompanying drawing 1 with a three-layer co-extrusion method i.e. main extruder (main extruder) and two auxiliary extruders (coextruder) by extruding slab after trilamellar membrane head, then carry out longitudinal and transverse biaxial tension to form, i.e. ABC tri-layers of laminated film.Wherein A, C are top layer 0.8um, B is sandwich layer 30um.
Sandwich layer is polypropylene (Exxon Mobil/4792E1), and A layer is extinction layer, and delustring masterbatch by mixing one-tenth of raw material such as PP, PE, delustring particles, is prepared into delustring masterbatch by double screw extruder, draws production line, extruded by auxiliary 1 extruder for BOPP is two.Delustring masterbatch component: PP resin 60 weight portion high density PE 40 weight portion, inorganic flatting silica silica 15 weight portion, dispersant 2 weight portion, antioxidant 0.5 weight portion.C layer is anti-stick interconnect layer (Belgian chulman, BPP02), is extruded by auxiliary 2 extruders.
Calibrator device: the Beta gamma thickness gage produced by German RADIOMETER company, width can reach 7 meters, radioactive source Pml47.
Extruder, without mixing transformation, adopts the screw extruder of screwing element, auxiliary 1 extruder metre filter area 240m 2, 200 orders, controlling filter import melt pressure is 190 handkerchiefs, and melt temperature is 250 degrees Celsius.
After this extrusion system produces 6 months, because die head coking, coking carbide are gathered in die internal, cause produced film thickness not good, 2-sigma rises to 2% from about 1%, can not meet THICKNESS CONTROL requirement, must stop cleaning die head, extrusion system.Remove coking carbide.
 
Embodiment 1
Germany Bruckner company BOPP is two draws production line, technological process as accompanying drawing 1 with a three-layer co-extrusion method i.e. main extruder (main extruder) and two auxiliary extruders (coextruder) by extruding slab after trilamellar membrane head, then carry out longitudinal and transverse biaxial tension to form, i.e. ABC tri-layers of laminated film.Wherein A, C are top layer 0.8um, B is sandwich layer 30um.
Sandwich layer is polypropylene (Exxon Mobil/4792E1), and A layer is that extinction layer is extruded by auxiliary 1 extruder.Delustring raw material components: PP resin 60 weight portion high density PE 40 weight portion, inorganic flatting silica silica 15 weight portion, dispersant 2 weight portion, antioxidant 0.5 weight portion, is directly extruded by auxiliary 1 extruder by feed system charging.C layer is anti-stick interconnect layer (Belgian chulman, BPP02), is extruded by auxiliary 2 extruders.
Calibrator device: the Beta gamma thickness gage produced by German RADIOMETER company, width can reach 7 meters, radioactive source Pml47.
Extruder, without mixing transformation, adopts the screw extruder of screwing element, auxiliary 1 extruder metre filter area 240m 2, 380 orders, controlling filter import melt pressure is 230 handkerchiefs, and melt temperature is 270 degrees Celsius.
After this extrusion system produces 8 months, because die head coking, carbide are gathered in die internal, cause produced film thickness not good, 2-sigma rises to 2% from about 1%, can not meet THICKNESS CONTROL requirement, must stop cleaning die head, extrusion system.Remove coking carbide.
 
Embodiment 2
Germany Bruckner company BOPP is two draws production line, technological process as accompanying drawing 1 with a three-layer co-extrusion method i.e. main extruder (main extruder) and two auxiliary extruders (coextruder) by extruding slab after trilamellar membrane head, then carry out longitudinal and transverse biaxial tension to form, i.e. ABC tri-layers of laminated film.Wherein A, C are top layer 0.8um, B is sandwich layer 30um.
Sandwich layer is polypropylene (Exxon Mobil/4792E1), and A layer is that extinction layer is extruded by auxiliary 1 extruder.Delustring raw material components: PP resin 60 weight portion high density PE 40 weight portion, inorganic flatting silica silica 15 weight portion, dispersant 2 weight portion, antioxidant 0.5 weight portion, is directly extruded by auxiliary 1 extruder by feed system charging.C layer is anti-stick interconnect layer (Belgian chulman, BPP02), is extruded by auxiliary 2 extruders.
Calibrator device: the Beta gamma thickness gage produced by German RADIOMETER company, width can reach 7 meters, radioactive source Pml47.
Extruder, without mixing transformation, adopts the screw extruder of screwing element, auxiliary 1 extruder metre filter area 240m 2, 500 orders, controlling filter import melt pressure is 250 handkerchiefs, and melt temperature is 270 degrees Celsius.
After this extrusion system produces 9 months, because die head coking, carbide are gathered in die internal, cause produced film thickness not good, 2-sigma rises to 2% from about 1%, can not meet THICKNESS CONTROL requirement, must stop cleaning die head, extrusion system.Remove coking carbide.
 
Embodiment 3
Germany Bruckner company BOPP is two draws production line, technological process as accompanying drawing 1 with a three-layer co-extrusion method i.e. main extruder (main extruder) and two auxiliary extruders (coextruder) by extruding slab after trilamellar membrane head, then carry out longitudinal and transverse biaxial tension to form, i.e. ABC tri-layers of laminated film.Wherein A, C are top layer 0.8um, B is sandwich layer 30um.
Sandwich layer is polypropylene (Exxon Mobil/4792E1), and A layer is that extinction layer is extruded by auxiliary 1 extruder.Delustring raw material components: PP resin 60 weight portion high density PE 40 weight portion, inorganic flatting silica silica 15 weight portion, dispersant 2 weight portion, antioxidant 0.5 weight portion, is directly extruded by auxiliary 1 extruder by feed system charging.C layer is anti-stick interconnect layer (Belgian chulman, BPP02), is extruded by auxiliary 2 extruders.
Calibrator device: the Beta gamma thickness gage produced by German RADIOMETER company, width can reach 7 meters, radioactive source Pml47.
Extruder, without mixing transformation, adopts the screw extruder of screwing element, auxiliary 1 extruder metre filter area 240m 2, 450 orders, controlling filter import melt pressure is 240 handkerchiefs, and melt temperature is 275 degrees Celsius.
After this extrusion system produces 10 months, because die head coking, carbide are gathered in die internal, cause produced film thickness not good, 2-sigma rises to 2% from about 1%, can not meet THICKNESS CONTROL requirement, must stop cleaning die head, extrusion system.Remove coking carbide.
 
Embodiment 4
Germany Bruckner company BOPP is two draws production line, technological process as accompanying drawing 1 with a three-layer co-extrusion method i.e. main extruder (main extruder) and two auxiliary extruders (coextruder) by extruding slab after trilamellar membrane head, then carry out longitudinal and transverse biaxial tension to form, i.e. ABC tri-layers of laminated film.Wherein A, C are top layer 0.8um, B is sandwich layer 30um.
Sandwich layer is polypropylene (Exxon Mobil/4792E1), and A layer is that extinction layer is extruded by auxiliary 1 extruder.Delustring raw material components: PP resin 60 weight portion high density PE 40 weight portion, inorganic flatting silica silica 15 weight portion, dispersant 2 weight portion, antioxidant 0.5 weight portion, is directly extruded by auxiliary 1 extruder by feed system charging.C layer is anti-stick interconnect layer (Belgian chulman, BPP02), is extruded by auxiliary 2 extruders.
Calibrator device: the Beta gamma thickness gage produced by German RADIOMETER company, width can reach 7 meters, radioactive source Pml47.
Extruder, without mixing transformation, adopts the screw extruder of screwing element, auxiliary 1 extruder metre filter area 240m 2, 380 orders, controlling filter import melt pressure is 230 handkerchiefs, and melt temperature is 270 degrees Celsius.
After this extrusion system produces 10 months, because die head coking, carbide are gathered in die internal, cause produced film thickness not good, 2-sigma rises to 2% from about 1%, can not meet THICKNESS CONTROL requirement, must stop cleaning die head, extrusion system.Remove coking carbide.
 
Embodiment 5
Germany Bruckner company BOPP is two draws production line, technological process as accompanying drawing 1 with a three-layer co-extrusion method i.e. main extruder (main extruder) and two auxiliary extruders (coextruder) by extruding slab after trilamellar membrane head, then carry out longitudinal and transverse biaxial tension to form, i.e. ABC tri-layers of laminated film.Wherein A, C are top layer 0.8um, B is sandwich layer 30um.
Sandwich layer is polypropylene (Exxon Mobil/4792E1), and A layer is that extinction layer is extruded by auxiliary 1 extruder.Delustring raw material components: PP resin 60 weight portion high density PE 40 weight portion, inorganic flatting silica silica 15 weight portion, dispersant 2 weight portion, antioxidant 0.5 weight portion, is directly extruded by auxiliary 1 extruder by feed system charging.C layer is anti-stick interconnect layer (Belgian chulman, BPP02), is extruded by auxiliary 2 extruders.
Calibrator device: the Beta gamma thickness gage produced by German RADIOMETER company, width can reach 7 meters, radioactive source Pml47.
Extruder, without mixing transformation, adopts the screw extruder of screwing element, auxiliary 1 extruder metre filter area 240m 2, 300 orders, by changing the melt flow channel area of little 15%, controlling filter import melt pressure is 230 handkerchiefs, and melt temperature is 270 degrees Celsius.
After this extrusion system produces 9 months, because die head coking, carbide are gathered in die internal, cause produced film thickness not good, 2-sigma rises to 2% from about 1%, can not meet THICKNESS CONTROL requirement, must stop cleaning die head, extrusion system.Remove coking carbide.
 
Embodiment 6
Germany Bruckner company BOPP is two draws production line, technological process as accompanying drawing 1 with a three-layer co-extrusion method i.e. main extruder (main extruder) and two auxiliary extruders (coextruder) by extruding slab after trilamellar membrane head, then carry out longitudinal and transverse biaxial tension to form, i.e. ABC tri-layers of laminated film.Wherein A, C are top layer 2um, B is sandwich layer 19um.
Sandwich layer is polypropylene (Exxon Mobil/4792E1), and A layer is for extrude by auxiliary 1 extruder.A layer component: PP resin 100 weight portion, yellow uitramarine masterbatch 4 weight portion, anti-blocking agent Belgium chulman, BPP02 2 weight portion, antioxidant 0.5 weight portion.C layer component: PP resin 100 weight portion, blue pigment masterbatch 2 weight portion, anti-blocking agent Belgium chulman, BPP02 2.3 weight portion, antioxidant 0.5 weight portion, is extruded by auxiliary 2 extruders.
Calibrator device: the Beta gamma thickness gage produced by German RADIOMETER company, width can reach 7 meters, radioactive source Pml47.
Extruder, without mixing transformation, adopts the screw extruder of screwing element, auxiliary 1 extruder metre filter area 240m 2, 380 orders, controlling filter import melt pressure is 230 handkerchiefs, and melt temperature is 270 degrees Celsius.
After this extrusion system produces 9 months, because die head coking, carbide are gathered in die internal, cause produced film thickness not good, 2-sigma rises to 2% from about 1%, can not meet THICKNESS CONTROL requirement, must stop cleaning die head, extrusion system.Remove coking carbide.
 
Embodiment 7
Germany Bruckner company BOPP is two draws production line, technological process as accompanying drawing 1 with a three-layer co-extrusion method i.e. main extruder (main extruder) and two auxiliary extruders (coextruder) by extruding slab after trilamellar membrane head, then carry out longitudinal and transverse biaxial tension to form, i.e. ABC tri-layers of laminated film.Wherein A, C are top layer 2um, B is sandwich layer 19um.
Sandwich layer is polypropylene (Exxon Mobil/4792E1), and A layer is for extrude by auxiliary 1 extruder.A layer component: PP resin 100 weight portion, yellow uitramarine masterbatch 4 weight portion, anti-blocking agent Belgium chulman, BPP02 2 weight portion, antioxidant 0.5 weight portion.C layer component: PP resin 100 weight portion, blue pigment masterbatch 2 weight portion, anti-blocking agent Belgium chulman, BPP02 2.3 weight portion, antioxidant 0.5 weight portion, is extruded by auxiliary 2 extruders.
Calibrator device: the Beta gamma thickness gage produced by German RADIOMETER company, width can reach 7 meters, radioactive source Pml47.
Screw extruder, comprise cylindrical shell, in cylindrical shell, driving shaft is set, driving shaft is arranged there are 2 groups of screwing elements (charging place and discharging place), described driving shaft also comprises to 2 groups of mixing elementses, described mixing elements, described mixing elements comprises 5 mixing dishes, and 5 mixing dishes, with 45 degree of seamless stagger arrangement, are shown in accompanying drawing 2, accompanying drawing 3 is with the mixing elements of 60 degree of seamless stagger arrangement, auxiliary 1 extruder metre filter area 240m 2, 200 orders, after filtering, arrange static mixer (Qidong Ge Laite) in melt pipe.
This extrusion system is produced 9 months (45 degree), after 7 months (60 degree), because die head coking, carbide are gathered in die internal; cause produced film thickness not good; 2-sigma rises to 2% from about 1%, can not meet THICKNESS CONTROL requirement, must stop cleaning die head, extrusion system.Remove coking carbide.The visible expectation well beyond those skilled in the art, adopts 45 degree of carbonizations greatly reducing die head place.
 
Embodiment 8
Germany Bruckner company BOPP is two draws production line, technological process as accompanying drawing 1 with a three-layer co-extrusion method i.e. main extruder (main extruder) and two auxiliary extruders (coextruder) by extruding slab after trilamellar membrane head, then carry out longitudinal and transverse biaxial tension to form, i.e. ABC tri-layers of laminated film.Wherein A, C are top layer 2um, B is sandwich layer 19um.
Sandwich layer is polypropylene (Exxon Mobil/4792E1), and A layer is that extinction layer is extruded by auxiliary 1 extruder.Delustring raw material components: PP resin 60 weight portion high density PE 40 weight portion, inorganic flatting silica silica 15 weight portion, dispersant 2 weight portion, antioxidant 0.5 weight portion, is directly extruded by auxiliary 1 extruder by feed system charging.C layer is anti-stick interconnect layer (Belgian chulman, BPP02), is extruded by auxiliary 2 extruders.
Calibrator device: the Beta gamma thickness gage produced by German RADIOMETER company, width can reach 7 meters, radioactive source Pml47.
Screw extruder, comprise cylindrical shell, in cylindrical shell, driving shaft is set, driving shaft is arranged there are 2 groups of screwing elements, described driving shaft also comprises to 2 groups of mixing elementses, described mixing elements, described mixing elements comprises 5 mixing dishes, 5 mixing dishes with 45 degree of seamless stagger arrangement, auxiliary 1 extruder metre filter area 240m 2, 500 orders, controlling filter import melt pressure is 245 handkerchiefs, and melt temperature is 280 degrees Celsius.
After this extrusion system produces 10 months, because die head coking, carbide are gathered in die internal, cause produced film thickness not good, 2-sigma rises to 2% from about 1%, can not meet THICKNESS CONTROL requirement, must stop cleaning die head, extrusion system.Remove coking carbide.
 
Embodiment 9
Germany Bruckner company BOPP is two draws production line, technological process as accompanying drawing 1 with a three-layer co-extrusion method i.e. main extruder (main extruder) and two auxiliary extruders (coextruder) by extruding slab after trilamellar membrane head, then carry out longitudinal and transverse biaxial tension to form, i.e. ABC tri-layers of laminated film.Wherein A, C are top layer 2um, B is sandwich layer 19um.
Sandwich layer is polypropylene (Exxon Mobil/4792E1), and A layer is that extinction layer is extruded by auxiliary 1 extruder.Delustring raw material components: PP resin 60 weight portion high density PE 40 weight portion, inorganic flatting silica silica 15 weight portion, dispersant 2 weight portion, antioxidant 0.5 weight portion, is directly extruded by auxiliary 1 extruder by feed system charging.C layer is anti-stick interconnect layer (Belgian chulman, BPP02), is extruded by auxiliary 2 extruders.
Calibrator device: the Beta gamma thickness gage produced by German RADIOMETER company, width can reach 7 meters, radioactive source Pml47.
Extruder, without mixing transformation, adopts the screw extruder of screwing element, auxiliary 1 extruder metre filter area 240m 2, 500 orders, controlling filter import melt pressure is 245 handkerchiefs, and melt temperature is 280 degrees Celsius, after filtering, arranges static mixer (Qidong Ge Laite) in melt pipe.
After this extrusion system produces 12 months, because die head coking, carbide are gathered in die internal, cause produced film thickness not good, 2-sigma rises to 2% from about 1%, can not meet THICKNESS CONTROL requirement, must stop cleaning die head, extrusion system.Remove coking carbide.
 
Embodiment 10
Germany Bruckner company BOPP is two draws production line, technological process as accompanying drawing 1 with a three-layer co-extrusion method i.e. main extruder (main extruder) and two auxiliary extruders (coextruder) by extruding slab after trilamellar membrane head, then carry out longitudinal and transverse biaxial tension to form, i.e. ABC tri-layers of laminated film.Wherein A, C are top layer 2um, B is sandwich layer 19um.
Sandwich layer is polypropylene (Exxon Mobil/4792E1), and A layer is that extinction layer is extruded by auxiliary 1 extruder.Delustring raw material components: PP resin 60 weight portion high density PE 40 weight portion, inorganic flatting silica silica 15 weight portion, dispersant 2 weight portion, antioxidant 0.5 weight portion, is directly extruded by auxiliary 1 extruder by feed system charging.C layer is anti-stick interconnect layer (Belgian chulman, BPP02), is extruded by auxiliary 2 extruders.
Calibrator device: the Beta gamma thickness gage produced by German RADIOMETER company, width can reach 7 meters, radioactive source Pml47.
Screw extruder, comprise cylindrical shell, in cylindrical shell, driving shaft is set, driving shaft is arranged there are 2 groups of screwing elements, described driving shaft also comprises to 2 groups of mixing elementses, described mixing elements, described mixing elements comprises 5 mixing dishes, 5 mixing dishes with 45 degree of seamless stagger arrangement, auxiliary 1 extruder metre filter area 240m 2, 200 orders, after filtering, arrange static mixer (Qidong Ge Laite) in melt pipe.
After this extrusion system produces 11 months, because die head coking, carbide are gathered in die internal, cause produced film thickness not good, 2-sigma rises to 2% from about 1%, can not meet THICKNESS CONTROL requirement, must stop cleaning die head, extrusion system.Remove coking carbide.
 
Embodiment 11
Germany Bruckner company BOPP is two draws production line, technological process as accompanying drawing 1 with a three-layer co-extrusion method i.e. main extruder (main extruder) and two auxiliary extruders (coextruder) by extruding slab after trilamellar membrane head, then carry out longitudinal and transverse biaxial tension to form, i.e. ABC tri-layers of laminated film.Wherein A, C are top layer 2um, B is sandwich layer 19um.
Sandwich layer is polypropylene (Exxon Mobil/4792E1), and A layer is that extinction layer is extruded by auxiliary 1 extruder.Delustring raw material components: PP resin 60 weight portion high density PE 40 weight portion, inorganic flatting silica silica 15 weight portion, dispersant 2 weight portion, antioxidant 0.5 weight portion, is directly extruded by auxiliary 1 extruder by feed system charging.C layer is anti-stick interconnect layer (Belgian chulman, BPP02), is extruded by auxiliary 2 extruders.
Calibrator device: the Beta gamma thickness gage produced by German RADIOMETER company, width can reach 7 meters, radioactive source Pml47.
Screw extruder, comprise cylindrical shell, in cylindrical shell, driving shaft is set, driving shaft is arranged there are 2 groups of screwing elements, described driving shaft also comprises to 2 groups of mixing elementses, described mixing elements, described mixing elements comprises 5 mixing dishes, 5 mixing dishes with 45 degree of seamless stagger arrangement, auxiliary 1 extruder metre filter area 240m 2, 500 orders, controlling filter import melt pressure is 245 handkerchiefs, and melt temperature is 275 degrees Celsius, after filtering, arranges static mixer (Qidong Ge Laite) in melt pipe.
After this extrusion system produces 14 months, because die head coking, carbide are gathered in die internal, cause produced film thickness not good, 2-sigma rises to 2% from about 1%, can not meet THICKNESS CONTROL requirement, must stop cleaning die head, extrusion system.Remove coking carbide.
The film product that embodiment 1-11 obtains, the properties of product obtained with comparative example 1 are close.

Claims (10)

1.BOPP extrusion system, it is characterized in that, comprise screw extruder, described screw extruder comprises the delivery outlet of cylindrical shell and barrel tip, described BOPP extrusion system also comprises filter, the fused materials that described filter exports for the delivery outlet of filtration barrel body, described filter inlet melt pressure is 230-250 handkerchief, melt temperature is 270-280 degree Celsius.
2. BOPP extrusion system according to claim 1, is characterized in that, filter inlet melt pressure is increased to 230-250 handkerchief by described filter.
3. BOPP extrusion system according to claim 1 and 2, is characterized in that, arranges the screen pack of more than 380 orders in described filter.
4. BOPP extrusion system according to claim 1 and 2, is characterized in that, comprises melt flow channel in described filter, by changing the size of described melt flow channel, improves filter inlet melt pressure.
5. according to the BOPP extrusion system in claim 1-4 described in any one claim, it is characterized in that, described screw extruder comprises the delivery outlet of cylindrical shell and barrel tip, described BOPP extrusion system also comprises melt pipe, the fused materials that described melt pipe exports for carrying the delivery outlet of cylindrical shell, arranges mixing facilities in described melt pipe.
6. BOPP extrusion system according to claim 5, is characterized in that, described mixing facilities is static mixer.
7. according to the BOPP extrusion system in claim 1-6 described in any one claim, it is characterized in that, described screw extruder comprises cylindrical shell, in cylindrical shell, driving shaft is set, driving shaft is arranged there are at least two group screwing elements, described driving shaft also comprises at least one group of mixing elements, described mixing elements, described mixing elements comprises several mixing dish.
8. BOPP extrusion system according to claim 8, is characterized in that, described several mixing dish is with 45 degree of seamless stagger arrangement.
9. according to the BOPP extrusion system in claim 1-8 described in any one claim, it is characterized in that, described BOPP is the BOPP containing functional masterbatch, and the raw material of described BOPP extrusion system direct using function sexupara material is produced.
10.BOPP preparation method, is characterized in that, comprises the following steps, and provides the extrusion system containing filter; Extruded through extruder by one or more layers raw material of described BOPP, described filter inlet melt pressure is 230-250 handkerchief, melt temperature is 270-280 degree Celsius.
CN201410555263.9A 2014-10-20 2014-10-20 BOPP extruding system Pending CN104385556A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110450383A (en) * 2019-08-19 2019-11-15 苏州昆岭薄膜工业有限公司 A kind of filter for eliminating matt film crystal point

Citations (1)

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Publication number Priority date Publication date Assignee Title
CN101234689A (en) * 2008-02-04 2008-08-06 无锡宏铭材料科技有限公司 Two-way stretch polypropylene film with anti-fog performance and preparation thereof

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Publication number Priority date Publication date Assignee Title
CN101234689A (en) * 2008-02-04 2008-08-06 无锡宏铭材料科技有限公司 Two-way stretch polypropylene film with anti-fog performance and preparation thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110450383A (en) * 2019-08-19 2019-11-15 苏州昆岭薄膜工业有限公司 A kind of filter for eliminating matt film crystal point
CN110450383B (en) * 2019-08-19 2024-03-08 苏州昆岭薄膜工业有限公司 Filter for eliminating extinction film crystal points

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Application publication date: 20150304