CN104275790B - Three-layer co-extrusion plastic film blow molding machine head with combined type rotary core rod and layered two-channel temperature control device - Google Patents
Three-layer co-extrusion plastic film blow molding machine head with combined type rotary core rod and layered two-channel temperature control device Download PDFInfo
- Publication number
- CN104275790B CN104275790B CN201410500329.4A CN201410500329A CN104275790B CN 104275790 B CN104275790 B CN 104275790B CN 201410500329 A CN201410500329 A CN 201410500329A CN 104275790 B CN104275790 B CN 104275790B
- Authority
- CN
- China
- Prior art keywords
- core
- runner
- internal layer
- middle level
- layer core
- Prior art date
- 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.)
- Expired - Fee Related
Links
- 239000002985 plastic film Substances 0.000 title claims abstract description 11
- 229920006255 plastic film Polymers 0.000 title claims abstract description 11
- 238000001125 extrusion Methods 0.000 title abstract description 5
- 238000000071 blow moulding Methods 0.000 title abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 123
- 230000007704 transition Effects 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 239000004033 plastic Substances 0.000 claims abstract description 10
- 229920003023 plastic Polymers 0.000 claims abstract description 10
- 230000000087 stabilizing effect Effects 0.000 claims description 33
- 150000001875 compounds Chemical class 0.000 claims description 24
- 239000002826 coolant Substances 0.000 claims description 13
- 230000009977 dual effect Effects 0.000 claims description 11
- 230000037361 pathway Effects 0.000 claims description 11
- 238000007664 blowing Methods 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 6
- 230000000704 physical effect Effects 0.000 claims description 6
- 230000006798 recombination Effects 0.000 claims description 5
- 238000005215 recombination Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 244000309464 bull Species 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000004513 sizing Methods 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 1
- 239000000155 melt Substances 0.000 abstract 1
- 239000010408 film Substances 0.000 description 24
- 239000007789 gas Substances 0.000 description 8
- 239000010409 thin film Substances 0.000 description 8
- 239000012528 membrane Substances 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010096 film blowing Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a three-layer co-extrusion plastic film blow molding machine head with a combined type rotary core rod and a layered two-channel temperature control device and relates to the field of molding of multi-layer plastic composite films. The machine head comprises a rotary core rod with combined thread elements, wherein materials in a middle layer and an outer layer respectively enter the machine head by virtue of material inlet devices in the middle layer and the outer layer and compositely flow towards a hole mold by virtue of a semi-circular annular main runner formed by core molds in the inner layer and the middle layer and core molds in the middle layer and the outer layer, multistage parallel branch pipes, a multi-head thread section-variable branch runner and a pressure-stabilization area transition runner; a heating and cooling system capable of independently controlling the temperature is arranged on the core mold in each layer. By virtue of measures of changing the rotation speed of the rotary core rod, the combination of the thread elements, the stage number of the parallel branch pipes, the number of heads and the inclined angle of each branch runner and modifying the section shape of each branch runner and a gap of the pressure-stabilization area transition runner, three types of plastic melts are same in process pressure drop, stay time and shear stress at a composite interface during flowing from the machine head inlet to the hole mold, so that plastic composite films with different properties are produced.
Description
Technical field
The present invention relates to producing the blow molding machine head of three-layer co-extruded composite plastic film and in particular to helix core rod to head
The improvement of structure and the method for each layer core temperature control, are particularly suitable for producing of three floor height precision Coextruded blown films.
Background technology
Constantly carrying to high polymer extrusion film performance requirement in emergence with high polymer new material and market
Height, the thin film of one-component tends not to economically meet the requirement using and processing.Can will be many using multi-layer co-extruded technique
Layer has the material of different qualities, after the plasticizing of multiple stage extruder, is jointly squeezed in a composite machine head and converges.By blowing
The operation such as mould, cool down, draw and batch, the composite function film of the optimal cost performance of production that can be most economical.
By the innovative design of composite co-extruding blow molding machine head structure, effective adjustment of each layer film thickness, and each layer thing
The precise control of the temperature of material, can make the combination property of laminated film be improved.In a broad scope, rebuild
The structure of thin film, the range of choice of base material is more extensive, and each Rotating fields combination of film is convenient flexibly, and cost is cheaper.
The good characteristic of different material can be carried out complementation by it, can obtain performance and the outward appearance of particular/special requirement, such as oxygen and damp proof
High barrier, coloring, heat insulating ability.Thermoforming and heat bonding ability, intensity, rigidity, hardness and penetration-resistant, not only increase
Added the added value of thin film, simplified the flow process of combination process, decreased investment, and make thin film quality more stable.
Multi-layer blown film technique is mainly for the production of food packaging Obstruct membrane, multi-layer biaxially oriented directional retraction film, hollow
Preservative film, geomembrane, packaging heavy duty film, diaphragm seal, stretched film, bale packing film etc..These films are in food, medicine, daily chemical products
Packaging, agricultural booth, water conservancy, the field such as environmental project have extensive purposes.
Multi-layer blown film thin film is mainly made up of base material, barrier material and binding agent etc..This patent is blown with three-layer co-extruded
Moulding thin film is binding site, illustrates how to solve the common technology difficult point in Multi-layer blown film thin film producing process.
Common technology difficult point in Multi-layer blown film thin film producing process: its core is that the runner of composite machine head sets
Meter, should ensure that material exports from head entrance to mouth mould equal along stroke pressure fall and the time of staying；Ensure the melting of each component
When material converges in the runner of recombination region, each layer melt is consistent with uniformity of temperature profile in the axial flow velocity of mouth mould circumference, thickness
Deviation is little, no the vestige of stream；Ensure at the faying face of each layered material stream that shear stress is consistent, the mechanical stress of melt and thermal stress
Less；The temperature difference of each layered material stream additionally should be made unsuitable excessive, when adjacent layer melting point resin, viscosity difference are larger, if each layer
It is improper that material temperature controls, and the resin poor to some heat stability is likely to form decomposition layer, no fisheye.Wish each layer for this
Flow channel can carry out independent temperature.
Content of the invention
The problem of the plastic material multilayer complex films processing differing greatly for performance, present invention achieves be based on combination type
Rotating mandrel and the MULTILAYER COMPOSITE blown-film die of multilamellar dual pathways independent temperature control.By in each layer core to composite machine head
The conduction oil runner of setting and the flow of cooling medium runner interior-heat carrier and the control of temperature, it is possible to achieve to each composite bed
In runner stream zone temperature precise control it is ensured that temperature of charge in set point of temperature area to obtain optimal flow state.Head
Center plug can configure the screw thread unit of different configuration and geometric parameter according to the rheological behavior of different material and thermodynamic behaviour
Part, according to the requirement of different technology conditions, adjusts the rotary speed of center plug, promote material with certain pressure and speed to
Mouthful mould direction flowing, it is to avoid due to innermost layer material because the not smooth and circumferentially distributed inequality of flowing that too long in flow leads to is asked
Topic.By the scientific allocation of combination type plug different configuration and the screwing element of geometric parameter, the regulation of center plug rotating speed, by
The ring-type semicircle sprue of internal layer core and middle level core, middle level core and outer layer core composition, multistage parallel manifold, many
The scientific algorithm of the reasonable disposition of head thread variable cross-section sub-runner and voltage stabilizing area transition runner and parameter and the subregion in each laminar flow road
The independent control of temperature, can with the axial and circumferential flow velocity of the material of effective control each layer different performance, pressure, the time of staying with
And the shear stress between each layer, eliminate stream vestige and fisheye.Thus improving the quality of item of final composite membrane.
Device involved in the present invention such as accompanying drawing 1, this equipment includes:
Air blowing tube inlet 1, rotatable center plug 2, bottom hush panel 3, thrust bearing 4, internal layer core 5, internal layer core
Ring-type semicircle sprue 51, the parallel manifold of internal layer core single order 52, the parallel manifold of internal layer core second order 53, internal layer core
The parallel menifold 55 of the parallel menifold of three ranks 54 internal layer core quadravalence, internal layer core multiple thread variable cross-section sub-runner 56, internal layer
The semicircle sprue 71 of core voltage stabilizing area transition runner 57, middle level material inlet device 6, middle level core 7, middle level core ring-type,
The parallel manifold 72 of middle level core single order, the parallel manifold 73 of middle level core second order, the parallel menifold of middle level core three rank 74, in
The parallel menifold of floor core quadravalence 75, middle level core multiple thread variable cross-section sub-runner 76, middle level core voltage stabilizing area transition runner
77th, outer layer core 8, compound runner external mold 9, gas blow pipe outlet 10, nut 11, compound runner internal model 12, outer skin materials entrance dress
Put 13 and internal layer material inlet device 14.
Overall compound blown-film die is fixed by screws on pedestal, air blowing tube inlet and pressure-air feeder phase
Even.Pressure-air is blown into from air blowing tube inlet, through the appendix in the plug of rotatable center, exports blowout from gas blow pipe.
Rotatable center plug lower end is connected with stepless speed change device by shaft coupling, can be rotated with setting speed according to technological requirement,
Internal layer material is promoted to mouth mould direction.
Rotatable center plug is connected with internal layer core by thrust bearing, and bottom hush panel passes through bolt and internal layer core
It is connected.Internal layer material inlet device one end is connected with internal layer core by screw, the outlet phase of one end and internal layer material extruder
Even.Internal layer core is connected with middle level core by screw.Middle level material inlet device one end is connected with middle level core by screw,
One end is connected with the outlet of middle level material extruder.Middle level core is connected with outer layer core by screw.Outer skin materials entrance fills
Put one end to be connected with outer layer core by screw, one end is connected with the outlet of outer skin materials extruder.Compound runner external mold passes through
Screw is connected with outer layer core, and compound runner internal model is connected with rotatable center plug by screw.Spiral shell is passed through in gas blow pipe outlet
Nail is connected with compound runner internal model.The semicircle sprue that internal layer core 5, middle level core 7 are formed, internal layer core are multistage parallel
Manifold, internal layer core multiple thread variable cross-section sub-runner 56 and voltage stabilizing area transition runner；Formed by middle level core 7, outer layer core 8
The multistage parallel manifold of semicircle sprue, middle level core, middle level core multiple thread variable cross-section sub-runner 76 and voltage stabilizing area mistake
Cross runner to；
Head is provided with three material inlets, the internal layer material inlet a respectively in accompanying drawing 1, middle level material inlet b, outer layer
Material inlet c, wherein internal layer material inlet device, middle level material inlet device, outer skin materials inlet device respectively with homologue
The outlet of extruder of material is connected.Internal layer material from internal layer material inlet device enter head, by rotatable center plug promote to
The flowing of mouth mould direction.Middle level material enters head from middle level material inlet device, forms via internal layer core and middle level core
Ring-type semicircle sprue, multistage parallel manifold, multiple thread variable cross-section sub-runner and voltage stabilizing area transition runner are to mouth mould side
To flowing；Outer skin materials enter head from outer skin materials inlet device, via the semi-circular shape of middle level core, outer layer core composition
Sprue, multistage parallel manifold, multiple thread variable cross-section sub-runner and voltage stabilizing area transition runner flow to mouth mould direction.By interior
The semicircle sprue of layer core and middle level core, middle level core and outer layer core composition, multistage parallel manifold, multiple thread
The configuration of variable cross-section sub-runner and voltage stabilizing area transition runner and parameter determination, the exponent number of such as parallel manifold, the head of sub-runner
Number and inclination angle, the shape of variable cross-section and voltage stabilizing area transition runner gap selection, all have to pass through scientific algorithm, should ensure that thing
It is equal along stroke pressure fall and the time of staying that material exports from head entrance to voltage stabilizing area transition runner.Physical property and technique when material
When changing, the present invention can be adjusted by the correction of the cross sectional shape of sub-runner and voltage stabilizing area transition runner gap.
Together constituted compound by internal layer core, middle level core, outer layer core, compound runner external mold and compound runner inner membrance
Area's runner, three kinds of materials flow out respectively from respective runner, converge, then from the mouth mould on head top in the runner of recombination region
Exit is flowed out.
When coextrusion realized by the material of different component, due to resin melting temperature and the processing and forming temperature of different component
It is very different, even more than 80 DEG C having, be provided with internal layer core, middle level core, outer layer core uniformly for this present invention
Turn back distribution heating medium and cooling medium dual pathways runner.Can realize respectively to internal layer material, middle level material and outer
The temperature of layer material is accurately controlled, and in accompanying drawing 1, d mouth heats medium runner entrance for outer layer core, and e mouth is outer layer core
Cooling medium runner entrance；H mouth heats medium runner entrance for internal layer core, and i mouth is internal layer core cooling medium runner entrance；
F mouth heats medium runner entrance for middle level core, and g mouth is middle level core cooling medium runner entrance.Heating medium can use
Conduction oil or hexanediol, cooling medium can use softened water or low temperature conduction oil.It is from front view angle that the bracket of in figure represents
Spend entrance invisible and that rearview can be seen.
For realizing to internal layer material, middle level material and outer skin materials temperature control independently, internal layer core 5, in
It is provided with heating medium runner and the cooling medium runner of distribution of uniformly turning back in layer core 7, outer layer core 8；Heating medium and
Cooling medium two media temperature range be 10-20 DEG C；
It is through hole in the middle part of the plug of rotatable center, for placing gas blow pipe.Gas blow pipe two ends and rotatable center plug
Endoporus is connected by sliding bearing, and sliding bearing adopts grease lubrication.Rotatable center plug 2 adopts mandrel, screwing element
Modular design mode, draw ratio controls in 6-10；Suggestion is between 6-8.Rotatable center plug 2 includes multiple screwing elements,
Each screwing element external diameter is identical, and draw ratio scope is 1.5-2, and number of starts is single head or bull, and screw channel volume is along material stream
Dynamic direction tapers into, and groove depth is 1/10-1/5 times of screw diameter.
According to the requirement of design function, the rotatable center plug in Fig. 1 uses 4 positive conveying screwing elements, each
Screwing element draw ratio is 1.5-2, and groove depth is between 1/10 to 1/5 times of screw diameter.The volume of screw channel should progressively reduce, each spiral shell
The spiral shell rib Ying Yuan degree of slipping over of texel part, no dead angle.
As shown in Figure 2, internal layer core is by internal layer core for the structure chart of internal layer core and middle level plug and external expansion figure
Ring-type semicircle sprue 51, the parallel manifold of internal layer core single order 52, the parallel manifold of internal layer core second order 53, internal layer core
The parallel menifold of three ranks 54, the parallel menifold of internal layer core quadravalence 55, internal layer core multiple thread variable cross-section sub-runner 56, internal layer
Core voltage stabilizing area transition runner 57 forms, and middle level core is by middle level core ring-type semicircle sprue 71, middle level core single order simultaneously
Connection formula manifold 72, the parallel manifold 73 of middle level core second order, the parallel menifold of middle level core three rank 74, middle level core quadravalence are in parallel
Formula menifold 75, middle level core multiple thread variable cross-section sub-runner 76, middle level core voltage stabilizing area transition runner 77 form.
The heating medium of distribution of uniformly turning back of setting and cooling medium in internal layer core, middle level core, outer layer core
Dual pathways runner expanded schematic diagram as shown in Figure 3.
Construct between middle level core and outer layer core, internal layer core and middle level core by semicircle sprue, multistage
The middle outer layer material flow path of parallel manifold, multiple thread variable cross-section sub-runner and voltage stabilizing area transition runner composition；In parallel
The configuration of the exponent number of formula manifold, the head number of sub-runner and inclination angle, the shape of variable cross-section and voltage stabilizing area transition runner gap parameter,
In change, the Flow Field Distribution state of outer layer stream, finally make each particle of fused materials from head entrance to voltage stabilizing area transition runner
Dropping along stroke pressure of outlet keeps equal with the time of staying.
When the physical property of material and technique change, adjusted with the dual pathways temperature control system temperature independent by each layer
The regulation of section, the pressure of center plug compressed air and flow, the rotary speed changing center of rotation plug and hauling speed,
Revise screwing element on the cross sectional shape of sub-runner and voltage stabilizing area transition runner gap, adjustment center plug combining form this eight
One of measure or two or more measure, realize the producing of laminated film of different physical property plastics.
The above-mentioned three-layer plastic Film laminated inflation film manufacturing machine with Assembled rotary plug and layering dual pathways independent temperature system
Head, similar mechanism is equally applicable to multilayer plastic film and is combined blown-film die.
Brief description
Fig. 1 is the embodiment of the present invention 1 head front view.
Fig. 2 (a) is the structure chart of embodiment 1 internal layer core.
Fig. 2 (b) is the structure chart of embodiment 1 middle level core.
Fig. 2 (c) is the exterior circumferential expanded view of embodiment 1 internal layer core runner.
Fig. 3 is that the heating of the distribution of uniformly turning back that embodiment 1 is arranged in internal layer core, middle level core, outer layer core is situated between
The dual pathways runner expanded schematic diagram of matter and cooling medium.
Fig. 4 is embodiments of the invention 2.
Specific embodiment
Embodiment 1
Fig. 1 is one embodiment of the present of invention, is made up of three kinds of variety classes plastic materials for producing, and different materials
The larger sandwich diaphragm of rheological property difference.Overall compound blown-film die is bolted on pedestal, air blowing tube inlet
It is connected with pressure-air feeder.Pressure-air is blown into from air blowing tube inlet, through the gas transmission in the plug of rotatable center
Pipe, exports blowout from gas blow pipe.Rotatable center plug lower end is connected with sprocket wheel and stepless speed change device by key, can be according to work
Skill requires, and with setting speed rotation, internal layer material is promoted to mouth mould direction.Middle level material enters from middle level material inlet device
Head, cuts via the ring-type semicircle sprue of internal layer core and middle level core composition, multistage parallel manifold, multiple thread change
Face sub-runner and voltage stabilizing area transition runner flow to mouth mould direction；Outer skin materials enter head, warp from outer skin materials inlet device
The semi-circular shape sprue that is made up of middle level core, outer layer core, multistage parallel manifold, multiple thread variable cross-section sub-runner and
Voltage stabilizing area transition runner flows to mouth mould direction.
Together constituted compound by internal layer core, middle level core, outer layer core, compound runner external mold and compound runner inner membrance
Area's runner, three kinds of materials flow out respectively from respective runner, converge, then from the mouth mould on head top in the runner of recombination region
Exit is flowed out.
Rotatable center plug is connected with internal layer core by thrust bearing, and bottom hush panel passes through bolt and internal layer core
It is connected.Internal layer material inlet device one end is connected with internal layer core by screw, the outlet phase of one end and internal layer material extruder
Even.Internal layer core is connected with middle level core by screw.Middle level material inlet device one end is connected with middle level core by screw,
One end is connected with the outlet of middle level material extruder.Middle level core is connected with outer layer core by screw.Outer skin materials entrance fills
Put one end to be connected with outer layer core by screw, one end is connected with the outlet of outer skin materials extruder.Compound runner external mold passes through
Screw is connected with outer layer core, and compound mouth mould internal model is connected with rotatable center plug by screw.Spiral shell is passed through in gas blow pipe outlet
Nail is connected with compound runner internal model.
Three kinds of different plastic materials are sent into three material inlets of head, i.e. internal layer material inlet by respective extruder
A, middle level material inlet b, outer skin materials entrance c, a diameter of 10-30mm of three entrances.Due to internal layer Flow of Goods and Materials distance relatively
Far, rotatable center plug initially rotates according to 5-20 rev/min of setting speed, and is carried out according to the extrusion situation of composite membrane
Adjustment.
It is provided with equally distributed conduction oil runner and cooling water flow conduits in internal layer core, middle level core, outer layer core, can enter
The independent temperature control of row.D mouth is outer layer core conduction oil flow channel entry point, and e mouth is outer layer core cooling water flow conduits entrance；H mouth is internal layer
Core conduction oil flow channel entry point, i mouth is internal layer core cooling water flow conduits entrance；F mouth is middle level core conduction oil flow channel entry point, g
Mouth is middle level core cooling water flow conduits entrance.
Rotatable center plug adopts mandrel, the modular design mode of screwing element, plug screw diameter 100mm, major diameter
Than for 6.Using 4 helical pitch identicals positive conveying screwing element, each screwing element draw ratio is 1.5, and groove depth is 1/6 times of spiral shell
Shank diameter.The exterior circumferential profile stretch-out view of internal layer core and middle level plug is as shown in Figure 2.Internal layer core, middle level core,
The heating medium of the distribution of uniformly turning back of setting and the dual pathways runner expanded schematic diagram such as accompanying drawing 3 of cooling medium in outer layer core
Shown.
Embodiment 2
Fig. 4 is embodiments of the invention 2, carries out three layers of compound blown film processing for the plastics materials poor to mobility.
Embodiment 2 difference from Example 1 is:
For mobility is poor or heat sensitive material, need to try one's best and shorten the time of staying in flow channel for the material, be
This needs to shorten the flow channel length of middle level core and internal layer core, therefore in the example 2 of the present invention, by tri- extruders of a, b, c
It is placed in same level position, the angle at adjacent two extruderses center is 120 °, by a feeding allotter from inside
Respectively to semi-circular shape sprue feed.
Three kinds of different plastic materials are sent into three material inlets of head by respective extruder, that is, interior material inlet a,
Middle level material inlet b, outer skin materials entrance c, the diameter of three entrances is about 10-30mm.Center of rotation plug is initially according to 5-
20 revs/min of setting speed rotation, and be adjusted according to the extrusion situation of composite membrane.
Rotatable center plug adopts the building block system modular design mode of mandrel and screwing element, using 4 positive conveyings
Screwing element, screwing element length is about 1-2 helical pitch.The helical pitch of two screwing elements in upper end is identical, and lead angle is 17 degree 42
Point, groove depth is about 1/8 times of screw diameter, and length is about 1 times of helical pitch.Lower end two screwing element helical pitch is bigger than upper end.Lower end
The helical pitch of two screwing elements, draw ratio is about 1.5, and groove depth is also 1/8 times of screw diameter.Middle level material is from middle level material
Inlet device enter head, via internal layer core and middle level core composition ring-type semicircle sprue, multistage parallel manifold,
Multiple thread variable cross-section sub-runner and voltage stabilizing area transition runner shape sprue flow to mouth mould direction；Outer skin materials are from outer skin materials
Inlet device enter head, via middle level core, outer layer core composition ring-type semicircle sprue, multistage parallel manifold,
Multiple thread variable cross-section sub-runner and voltage stabilizing area transition runner flow to mouth mould direction.When the physical property of material and technique change
When, the present invention can be by the pressure of the independent dual pathways temperature control system temperature of each layer and center plug compressed air and flow
Regulation, change the rotary speed of center of rotation plug and hauling speed, the cross sectional shape revising sub-runner and the transition of voltage stabilizing area
On runner gap, adjustment center plug, the measure such as combining form of screwing element is realizing the innovation THIN COMPOSITE of broad material scope
The producing of membrane structure.
Claims (6)
1. a kind of three-layer plastic Film laminated inflation film manufacturing machine with Assembled rotary plug and layering dual pathways independent temperature system
Head it is characterised in that:
Including air blowing tube inlet (1), rotatable center plug (2), bottom hush panel (3), thrust bearing (4), internal layer core
(5), internal layer core ring-type semicircle sprue (51), the parallel manifold of internal layer core single order (52), internal layer core second order are in parallel
Formula manifold (53), the parallel menifold of internal layer core three rank (54), the parallel menifold of internal layer core quadravalence (55), internal layer core bull
Screw thread variable cross-section sub-runner (56), internal layer core voltage stabilizing area's transition runner (57), middle level material inlet device (6), middle level core
(7), outer layer core (8), compound runner external mold (9), gas blow pipe outlet (10), nut (11), compound runner internal model (12), outer layer
Material inlet device (13) and internal layer material inlet device (14)；The parallel manifold of internal layer core single order (52), internal layer core two
The parallel manifold of rank (53), the parallel menifold of internal layer core three rank (54), the parallel menifold of internal layer core quadravalence (55) are referred to as
The multistage parallel manifold of internal layer core；
The internal layer core (5) of compound blown-film die, middle level core (7), outer layer core (8) are fixed by screws in pedestal respectively
On, air blowing tube inlet (1) is connected with pressure-air feeder；Pressure-air is blown into from air blowing tube inlet (1), through revolving
Turn the appendix in center plug (2), from gas blow pipe outlet (10) blowout；
Rotatable center plug (2) is connected with internal layer core (5) by thrust bearing (4), bottom hush panel (3) pass through bolt with
Internal layer core (5) is connected；Internal layer material inlet device (14) one end is connected with internal layer core (5) by screw, one end and internal layer
The outlet of material extruder is connected；Internal layer core (5) is connected with middle level core (7) by screw；Middle level material inlet device (6)
One end is connected with middle level core (7) by screw, and one end is connected with the outlet of middle level material extruder；Middle level core (7) passes through
Screw is connected with outer layer core (8)；Outer skin materials inlet device (13) one end is connected with outer layer core (8) by screw, one end
Outlet with outer skin materials extruder is connected；Compound runner external mold (9) is connected with outer layer core (8) by screw, compound runner
Internal model (12) is connected with rotatable center plug (2) by nut (11)；Gas blow pipe outlet (10) passes through screw and compound runner
Internal model (12) is connected；Internal layer core (5), middle level core (7) formation internal layer core ring-type semicircle sprue, internal layer core are multistage
Parallel manifold, internal layer core multiple thread variable cross-section sub-runner (56) and internal layer core voltage stabilizing area transition runner；By middle level core
Mould (7), outer layer core (8) form semicircle sprue, the multistage parallel manifold of middle level core, the change section of middle level core multiple thread
Face sub-runner (76) and voltage stabilizing area transition runner to；
Head is provided with three material inlets, respectively internal layer material inlet (a), middle level material inlet (b), outer skin materials entrance
(c), they respectively with internal layer material inlet device (14), middle level material inlet device (6), outer skin materials inlet device (13) phase
Corresponding.
2. three-layer plastic Film laminated blown-film die according to claim 1 it is characterised in that: rotatable center plug
(2) lower end is connected with stepless speed changing driver by shaft coupling, can carry out speed governing according to direction initialization；Internal layer material is from internal layer
Material inlet device (14) enters head, is promoted to the flowing of mouth mould direction by rotatable center plug (2), middle level material is from middle level
Material inlet device (6) enters head, along the semicircle sprue being formed by internal layer core (5), middle level core (7), internal layer core
The multistage parallel manifold of mould, internal layer core multiple thread variable cross-section sub-runner (56) and voltage stabilizing area transition runner flow to mouth mould direction
Dynamic；Outer skin materials enter head from outer skin materials inlet device (13), along half being formed by middle level core (7), outer layer core (8)
The multistage parallel manifold of circular sprue, middle level core, middle level core multiple thread variable cross-section sub-runner (76) and voltage stabilizing area mistake
Cross runner to flow to mouth mould direction；At the mouth mould on head top, by internal layer core (5), middle level core (7), outer layer core
(8), it is combined runner external mold (9), compound runner internal model (12) together form recombination region runner, three kinds of materials are respectively from respective
Flow out in runner, converge sizing in the runner of recombination region, then flow out from head exit.
3. three-layer plastic Film laminated blown-film die according to claim 1 it is characterised in that: rotatable center plug
(2) mandrel, the modular design mode of screwing element are adopted, draw ratio controls in 6-10；
Rotatable center plug (2) includes multiple screwing elements, and each screwing element external diameter is identical, and draw ratio scope is 1.5-2,
Number of starts is single head or bull, and screw channel volume tapers into along Flow of Goods and Materials direction, and groove depth is 1/10-1/5 times of screw diameter.
4. three-layer plastic Film laminated blown-film die according to claim 1 it is characterised in that: for realize to internal layer thing
Material, middle level material and outer skin materials temperature control independently, in internal layer core (5), middle level core (7), outer layer core (8)
Inside it is provided with heating medium runner and the cooling medium runner of distribution of uniformly turning back；Heating medium and cooling medium two media
Temperature range be 10-20 DEG C；
5. three-layer plastic Film laminated blown-film die according to claim 1 it is characterised in that: in middle level core and outer layer
Construct multistage in parallel by internal layer core ring-type semicircle sprue, internal layer core between core, internal layer core and middle level core
The middle level material stream of formula manifold, internal layer core multiple thread variable cross-section sub-runner and internal layer core voltage stabilizing area transition runner composition
Road；And built by middle level core (7), outer layer core (8) formed semicircle sprue, the multistage parallel manifold of middle level core,
Middle level core multiple thread variable cross-section sub-runner (76) and voltage stabilizing area transition runner are to the outer skin materials runner forming；
By the exponent number of the multistage parallel manifold of internal layer core, the head number of internal layer core multiple thread variable cross-section sub-runner and inclination
Angle, the shape of variable cross-section of internal layer core multiple thread variable cross-section sub-runner and internal layer core voltage stabilizing area transition runner gap parameter
Configuration；By the exponent number of the multistage parallel manifold of middle level core, the head number of middle level core multiple thread variable cross-section sub-runner and
Inclination angle, the shape of variable cross-section of middle level core multiple thread variable cross-section sub-runner and middle level core voltage stabilizing area transition runner gap
The configuration of parameter, in change, the Flow Field Distribution state of outer layer stream, finally makes each particle of fused materials from head entrance to voltage stabilizing
Dropping along stroke pressure of area's transition runner outlet keeps equal with the time of staying.
6. three-layer plastic Film laminated blown-film die according to claim 1 it is characterised in that: when physical property and the work of material
When skill changes, with the pressure of the dual pathways temperature control system temperature adjustment independent by each layer, center plug compressed air
The regulation of power and flow, the rotary speed changing rotatable center plug and hauling speed, revise sub-runner cross sectional shape and
Voltage stabilizing area transition runner gap, adjust on rotatable center plug one of this eight measure of combining form of screwing element or two kinds with
Upper measure, realizes the producing of laminated film of different physical property plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410500329.4A CN104275790B (en) | 2014-09-26 | 2014-09-26 | Three-layer co-extrusion plastic film blow molding machine head with combined type rotary core rod and layered two-channel temperature control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410500329.4A CN104275790B (en) | 2014-09-26 | 2014-09-26 | Three-layer co-extrusion plastic film blow molding machine head with combined type rotary core rod and layered two-channel temperature control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104275790A CN104275790A (en) | 2015-01-14 |
| CN104275790B true CN104275790B (en) | 2017-01-25 |
Family
ID=52251364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410500329.4A Expired - Fee Related CN104275790B (en) | 2014-09-26 | 2014-09-26 | Three-layer co-extrusion plastic film blow molding machine head with combined type rotary core rod and layered two-channel temperature control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104275790B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107364103A (en) * | 2017-08-25 | 2017-11-21 | 福建连众智惠实业有限公司 | One kind superposition sleeve coventry type die head coventry |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106142500A (en) * | 2015-04-28 | 2016-11-23 | 诺博橡胶制品有限公司 | Blowning installation |
| CN109016449B (en) * | 2018-08-30 | 2023-11-24 | 华南理工大学 | Method and equipment for rolling and forming ultrahigh molecular weight polymer based on dynamic extension |
| CN108839323B (en) * | 2018-09-21 | 2024-05-17 | 杨明昆 | Plastic pipeline extrusion molding device |
| CN109291394A (en) * | 2018-11-20 | 2019-02-01 | 常州金纬管道设备制造有限公司 | The three-layer co-extruded spiral mould of PE tubing and its charging distribution method |
| CN109531957B (en) * | 2019-01-23 | 2023-06-16 | 戴元庆 | Multilayer coextrusion blow molding die head of multilayer heat-insulating inflatable plastic film |
| CN110239050B (en) * | 2019-06-13 | 2021-01-15 | 开平雅琪塑胶机械模具厂 | Three-layer three-machine-head plastic extruder |
| WO2021013264A1 (en) * | 2019-07-25 | 2021-01-28 | 蒋晶磊 | Blow-molded panel and manufacturing method for blow-molded panel |
| CN113183439A (en) * | 2021-03-24 | 2021-07-30 | 佛山巴斯特科技股份有限公司 | Cooling structure of solid-wall pipe extrusion die head |
| CN113183433A (en) * | 2021-05-22 | 2021-07-30 | 佛山市顺德朋胜家电制造有限公司 | Foaming pipe production facility |
| CN113290820B (en) * | 2021-05-25 | 2023-03-10 | 昆明电立电缆有限公司 | Cable extrusion double-layer deviation-adjustment-free co-extrusion machine head and processing technology thereof |
| CN113787700B (en) * | 2021-08-13 | 2022-12-02 | 重庆沃特智成新材料科技有限公司 | Film blowing device |
| CN114454455A (en) * | 2022-02-14 | 2022-05-10 | 江西华缆科技有限公司 | Cable three-layer supply forming equipment |
| CN115157622B (en) * | 2022-06-15 | 2023-09-05 | 华南理工大学 | Multilayer melt spiral interweaving orientation coextrusion blow molding die and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203592658U (en) * | 2013-11-26 | 2014-05-14 | 瑞安市红旗塑料包装机械有限公司 | Multi-layer co-extrusion film blowing machine head |
| CN104044254A (en) * | 2014-05-27 | 2014-09-17 | 洛阳一海包装材料有限公司 | Dedicated multilayer coextrusion die head for packaging film and packaging bag production |
-
2014
- 2014-09-26 CN CN201410500329.4A patent/CN104275790B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203592658U (en) * | 2013-11-26 | 2014-05-14 | 瑞安市红旗塑料包装机械有限公司 | Multi-layer co-extrusion film blowing machine head |
| CN104044254A (en) * | 2014-05-27 | 2014-09-17 | 洛阳一海包装材料有限公司 | Dedicated multilayer coextrusion die head for packaging film and packaging bag production |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107364103A (en) * | 2017-08-25 | 2017-11-21 | 福建连众智惠实业有限公司 | One kind superposition sleeve coventry type die head coventry |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104275790A (en) | 2015-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104275790B (en) | Three-layer co-extrusion plastic film blow molding machine head with combined type rotary core rod and layered two-channel temperature control device | |
| US8157557B2 (en) | Rotary die head of film blowing machine for starch biodegradable material | |
| US6689472B2 (en) | Apparatus for extrusion of polymers and plastic products formed with the apparatus | |
| CN102350794A (en) | Method for preparing polyolefin-based barrier material product | |
| CN116214880B (en) | Mechanical device for synchronously producing multi-root-single multicolor tubular objects and modified material particles by adopting multiple feed inlets | |
| JPS5833092B2 (en) | Oshidashi Souchi | |
| CN105398021B (en) | A kind of exhibition stream method of the full meshing gear of melt extrusion pressure-driven | |
| CN102689431B (en) | Coextrusion mould of soft and hard plastic profiled bars | |
| CN114347423A (en) | Multi-layer core multi-direction rotating film blow molding method and device | |
| CN105383033B (en) | MULTILAYER COMPOSITE coextrusion method and mould based on rotational shear laminar flow dynamically distributes | |
| KR20180058394A (en) | Vinyl manufaturing equipment | |
| CN201253948Y (en) | Film blowing machine rotary die head suitable for starch biological degradation material | |
| CN210415460U (en) | Double-layer co-extrusion machine head die | |
| CN209158893U (en) | A kind of bilayer extrusion die | |
| CN102765179A (en) | Five-layer coextrusion plastic pipe forming die | |
| CN201253947Y (en) | Fused mass flow regulation apparatus for extruding mould | |
| CN110239049B (en) | Four-layer three-machine-head plastic extruder | |
| CN203317725U (en) | Special precision extrusion device for polyvinylidene fluoride (PVDF) | |
| CN204278474U (en) | The multi-layer co-extruded mould of a kind of PVDC | |
| CN206106516U (en) | Crowd thermophilic digestion deep -drawing membrane altogether for nine layers | |
| CN204136390U (en) | A kind of multi-layer co-extruded mould of PVDC with temperature adjustment function | |
| CN205853296U (en) | A kind of three-layer co-extruded plastic pipe process units | |
| CN105437497B (en) | Complete time property PVDC Multi-layer blown film film units | |
| CN105437511B (en) | A kind of multi-layer co-extruded moulds of PVDC with temperature adjustment function | |
| CN204278440U (en) | Air duct protection plate extrusion device is used in soft-hard coextrusion sealing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170125 |