CN2318024Y - Superimposed multilayer extruding and blowing film machine head - Google Patents
Superimposed multilayer extruding and blowing film machine head Download PDFInfo
- Publication number
- CN2318024Y CN2318024Y CN 98210234 CN98210234U CN2318024Y CN 2318024 Y CN2318024 Y CN 2318024Y CN 98210234 CN98210234 CN 98210234 CN 98210234 U CN98210234 U CN 98210234U CN 2318024 Y CN2318024 Y CN 2318024Y
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- Expired - Fee Related
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a superimposed extruding machine head with multilayer composite film formed by extruding and blowing multilayer plastic materials. The utility model is provided with more than one extruding machine head. The extruding machine heads are connected in series orderly. An annular discharge opening and a flow passage opening of the back machine head are abutted and communicated with the flow passage of the front machine head, and the front end of the headmost machine head is provided with an oral membrane communicated with the annular discharge opening and the flow passage. The material layer discharged by the back extruding machine head flows into the flow passage of the front extruding machine head, combines with the material layer discharged by the front extruding machine head, and then flows toward the front extruding machine head or the oral membrane flow passage to easily form an extruding film blowing machine head with multiple layers.
Description
The utility model relates to a kind of blown-film die of extruding of making multilayer plastic film, and is a kind of laminated plastics raw material co-extrusion and the superposing type co-extruding machine head that is blow molded into multi-layer compound film.
On November 4th, 1992 disclosed CN2120666U number Chinese utility model patent specification, the multi-layer co-extruded plastic film machine of record is curled by plastic extruder, feed distributor, film mouth and plastic film hitch frame and to form.Multi-section extruder is wherein arranged on same planar circumferential, their output interface respectively with same circumference in the heart the corresponding input interface of feed distributor link to each other, formed the mutual concentric multilayer extruder head that is overlapping.The charging of such head generally all is from central feeding.The feed distributor of each layer can not arbitrary combination, and same group of head can not form the multilayer plastic film of the different numbers of plies or different distributions.And the number of plies of resulting plastic sheeting is limited, and the many more structure distribution processing of the number of plies are difficult more.When flow in distributor and in the runner separately in each layer raw material input back, heat insulation each other relatively difficulty.When adjacent raw material melting temperature difference was bigger, easier each other heat conduction and influencing each other was not easy to temperature control separately, also easily is decomposed and thickener the interior cold difficult solution of head for low-melting raw material.When raw material enters head from the head side direction, raw material is difficult for being evenly distributed at the distributor circumferencial direction, easily produce the plastic film uneven phenomenon that extrusion blow goes out.
The purpose of this utility model is to provide a kind of is convenient to combination, be convenient to blow the multilayer stack moulds film, be convenient to the multi-layer co-extruded blown-film die of stack of the temperature of whole each layer of system raw material again, and then provide the side direction charging can guarantee the multi-layer co-extruded blown-film die of stack that raw material is evenly distributed again in distributor.
The multi-layer co-extruded blown-film die of stack of the present utility model has the extruder head more than, it is characterized in that: the extruder head tandem connection, the runner of the annular discharge opening of back head and runner mouth and front head is docked and connected, and top head front end is provided with the membrana oralis that is communicated with annular discharge opening and runner.Accompany heat insulating mattress between the adjacent head.Temperature can both be controlled easily between several like this raw materials, can not influence each other.The bed of material that the extruder head of back is discharged flows into the runner of its front extruder head, and is combined with each other with the bed of material that its front extruder head is discharged, to the extruder head or mouthful mould flow passage of front, is very easy to form the more coextrusion film blowing head of the number of plies again.The increase of the number of plies just will increase the length of head, and does not influence the structure distribution and the formation of other layers head.The head of each unit can be changed mutually, forms head multiple distribution and the number of plies, has saved the cost of head greatly, and is more convenient for cleaning maintenance.The multi-layer co-extruded blown-film die of stack of the present utility model can be by extruder head hollow more than two or two, the head and the tail of extruder head concentric are in series together, be inserted with plug in hollow jointly, plug constitutes runner together and between the extruder head hollow wall, constitutes extrusion between plug front end and mouthful mould.When plug is hollow structure, can constitute inner-cooling structure.By the cooling of plug, cold problem in having solved effectively.For raw material is evenly distributed in circulation and outlet, improve the forming quality of each tunic, side direction charging aperture and semi-ring channel connection, semi-ring passage two ends are communicated with the circular passage, and the circular passage is communicated with spiral distribution structure (device) and runner.The circular passage is a cross section convergent shape from outside to inside, and the inboard is communicated with spiral distribution structure (device) and runner, makes raw material distribute more even with one deck.More even for the product distribution of the head that makes larger caliber, the shunting semi-ring runner two ends outlet that enters annular channel, two minutes four or four minutes eight or eight minutes 16 symmetry outlet again are communicated with the circular passage equably.
The utility model compared with the prior art, same group of head can be combined into the co-extrusion that multiple layer imitates and blow the film head, is convenient to form multilayer, reaches as high as to 12 layers; Each layer divides into groups to be convenient between the head heat insulation, and temperature is convenient to control, is independent of each other between the raw material; High-temperature region raw material runner shortens greatly, and raw material should not be decomposed and thickener, and center air guide blowfilm shaping also is convenient in cold control in also can forming; Cleaned and changed easy to maintenance, each several part is independent of each other, and significantly reduces with the head relative volume of the number of plies, and it is more even that raw material is extruded distribution, improved the quality of plural layers greatly.
Accompanying drawing has represented that the master of a kind of five-layer co-squeezing blown-film die of the utility model cuts open structural representation, further specifies the utility model below in conjunction with the accompanying drawing example.
This five-layer co-squeezing blown-film die is made of the individual layer head of five stacks and plug 11, a mouthful mould 1.Five coaxial arrangements according to the order of sequence of individual layer head, five individual layer heads are that coaxial plug-in mounting plug with shaft hollow individual layer head.The plug center has the gas hole of being used to lead to 17.Plug and last individual layer head 15 hollow closely cooperating, and fix with it by bolt 16.Leave the gap between plug and other individual layer head hollow walls, constitute runner.Other individual layer heads are enclosed within mandrel outer and fix by bolt 10 and adjacent individual layer head.Plug leading portion and be fixed on the most last individual layer and want the common discharging opening 2 that constitutes whole head between the mouth mould before the head.The annular discharge opening 3 of each layer individual layer head and runner mouth 4 are docked and connected with a front head or a mouthful mould runner.The most preceding first individual layer head annular discharge opening 3 and runner mouth 4 is docked and connected with a mouthful mould runner, second, third, the runner of the 4th individual layer head annular discharge opening and runner and first, second, third individual layer head is docked and connected.The runner of the 5th (at last) individual layer head 15 annular discharge openings and the 4th individual layer head 14 is docked and connected.The charging aperture 6 of each individual layer head all is in the side, import is communicated with the middle part of half circular passage 5, semi-circular passage two ends are communicated with respectively with 8 liang of symmetry places, circular passage again, perhaps semi-ring runner two ends are divided into four or again four and are divided into eight or eight outlets that are divided into 16 symmetries, and outlet evenly distributes and is communicated with the circular passage.Circular passage and distribution four or eight or 16 or 32 helicla flute 7 butts are communicated with, and the spiral fluted side is communicated with the runner of outlet 3.The runner of semi-ring passage, circular passage, helicla flute and outlet has constituted distribution structure (distributor) jointly.Each layer raw material enters distribution structure by import, makes raw material be evenly distributed on the runner of outlet by semi-ring passage, circular passage, helicla flute, and discharges from outlet equably, forms continuous tubular thin layer.The thin layer material of the 5th individual layer head outlet discharge enters the annular channel in the 4th the individual layer head, and the thin layer material of discharging with the 4th individual layer head is compound and enter annular channel in the 3rd the individual layer head 13, the thin layer material of discharging with the 3rd individual layer head is compound and enter annular channel in second individual layer head 12 again, the thin layer material of discharging with second individual layer head is compound and enter annular channel in first (the most preceding) individual layer head, last thin layer material of discharging with first individual layer head is combined into five layers of compound coating layer, discharges from the mouth mould.Through passing the air blown that plug center guide hole is blown into, will be blow molded into five layers of laminated film from five layers of compound coating layer that the mouth mould is discharged.
Claims (6)
1, the multi-layer co-extruded blown-film die of a kind of stack, extruder head more than one is arranged, it is characterized in that: the extruder head tandem connection, the runner of the annular discharge opening of back head and runner mouth and front head is docked and connected, and top head front end is provided with the membrana oralis that is communicated with annular discharge opening and runner.
2, as the multi-layer co-extruded blown-film die of the said stack of claim 1, it is characterized in that: accompany heat insulating mattress between the adjacent head.
3, as claim 1 or the multi-layer co-extruded blown-film die of 2 said stacks, it is characterized in that: by extruder head hollow more than two or two, the head and the tail of extruder head concentric are in series together, be inserted with plug in hollow jointly, plug constitutes runner together and between the extruder head hollow wall, constitutes extrusion between plug front end and mouthful mould.
4, as claim 1 or the multi-layer co-extruded blown-film die of 2 said stacks, it is characterized in that: side direction charging aperture and semi-ring channel connection, semi-ring passage two ends are communicated with the circular passage, and the circular passage is communicated with spiral distribution structure and runner.
5, as claim 1 or the multi-layer co-extruded blown-film die of 2 said stacks, it is characterized in that: the circular passage is a cross section convergent shape from outside to inside, and the inboard is communicated with the spiral distribution structure.
6, as the multi-layer co-extruded blown-film die of the said stack of claim 4, it is characterized in that: enter the shunting semi-ring runner two ends outlet of annular channel, two minutes four or four minutes eight or eight minutes 16 symmetry outlet again are communicated with the circular passage equably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98210234 CN2318024Y (en) | 1998-01-06 | 1998-01-06 | Superimposed multilayer extruding and blowing film machine head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98210234 CN2318024Y (en) | 1998-01-06 | 1998-01-06 | Superimposed multilayer extruding and blowing film machine head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2318024Y true CN2318024Y (en) | 1999-05-12 |
Family
ID=33965334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98210234 Expired - Fee Related CN2318024Y (en) | 1998-01-06 | 1998-01-06 | Superimposed multilayer extruding and blowing film machine head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2318024Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780715A (en) * | 2010-03-12 | 2010-07-21 | 大连吉润高新技术机械有限公司 | Machine head of seven-layer coextrusion high barrier film blow molding machine |
| CN103660226A (en) * | 2013-11-26 | 2014-03-26 | 瑞安市红旗塑料包装机械有限公司 | Multi-layer co-extrusion film blowing machine head |
| CN108859053A (en) * | 2012-03-16 | 2018-11-23 | Bbs公司 | Layer sequence repeater module and products thereof for modularization disc co-extruding mould |
-
1998
- 1998-01-06 CN CN 98210234 patent/CN2318024Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780715A (en) * | 2010-03-12 | 2010-07-21 | 大连吉润高新技术机械有限公司 | Machine head of seven-layer coextrusion high barrier film blow molding machine |
| CN108859053A (en) * | 2012-03-16 | 2018-11-23 | Bbs公司 | Layer sequence repeater module and products thereof for modularization disc co-extruding mould |
| CN103660226A (en) * | 2013-11-26 | 2014-03-26 | 瑞安市红旗塑料包装机械有限公司 | Multi-layer co-extrusion film blowing machine head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |