CN2393707Y - Multi-layer squeezing die - Google Patents
Multi-layer squeezing die Download PDFInfo
- Publication number
- CN2393707Y CN2393707Y CN 99250282 CN99250282U CN2393707Y CN 2393707 Y CN2393707 Y CN 2393707Y CN 99250282 CN99250282 CN 99250282 CN 99250282 U CN99250282 U CN 99250282U CN 2393707 Y CN2393707 Y CN 2393707Y
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- CN
- China
- Prior art keywords
- layer
- fluid
- layers
- branch
- die head
- 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
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a multilayer coextrusion mould head which comprises a mould core, a mould opening, a machine body, a plurality of layers of flow dividing bodies which can form annular clamping seam flow channels, and a connecting body. Each layer of flow dividing body is provided with a central distributing hole; one end of the central distributing hole is communicated with a corresponding feed opening on the connecting body through the flow channels, and the other end is communicated with the annular clamping seam flow channels through radial direction flow channels which are uniformly distributed on the circumference of the flow dividing body. The utility model is characterized in that a central distributing type structure is adopted; each layer of material can enter the annular clamping seam flow channel from the flow dividing body and can be uniformly distributed inside the annular clamping seam flow channel so as to ensure uniform thickness of each layer of film and improve the quality of a multilayer composite film product; recombination with three layers, five layers, seven layers, or more layers can be realized.
Description
The utility model relates to a kind of processing of plastic equipment, particularly can extrude the die head of multilayer composite plastic film.
Existing laminated film die head, as triple extrusion die head, except that inner membrance is that central feeding evenly enters the annular crack runner through radial flow path again, all the other each retes (adventitia and intermediate coat) are the side direction charging, and are directly to enter in the annular crack runner of film forming.The problem that this die head exists is: material is directly sent in the annular crack runner from side direction, unequal and the wayward materials flow of distance that can cause material in annular crack runner, to flow, therefore be difficult to realize evenly distributing, this just causes each layer film became uneven, influences product quality.The charging aperture of die head is separately positioned on connected body and the body, when joining with extruder, needs to adjust the height of extruder, makes troubles to installation.
The purpose of this utility model is to provide a kind of reasonable in design, and each layer material is evenly distributed, thereby improves the multi-layer co-extruded die head of multi-layer compound film quality.
The purpose of this utility model is achieved in that multi-layer co-extruded die head, the multilayer that comprises core rod, die orifice, body, formation annular crack runner is divided fluid, connected body, its special character is to be equipped with the central dispense hole on every layer of branch fluid, corresponding charging aperture is connected one end in this hole on outer runner and the connected body that divides on the fluid through being located at, and the radial flow path of the other end through being uniformly distributed on the branch fluid circumference is connected with annular crack runner.
It is cylinder that described multilayer is divided the innermost layer of fluid, all the other each layers are barrel-shaped body, divide the centre of fluid and the bucket centre, the end of all the other each layer branch fluids that the central dispense hole all is set at innermost layer, also be provided with the radial flow path that is connected with the central dispense hole on the circumference at the bottom of innermost layer divides fluid and all the other each layer branch fluid buckets.
Being provided with helicla flute, can further adjust the uniformity of material by on the branch fluid perisporium in radial flow path exit.
The charging aperture of this die head all is arranged on the connected body, and each charging aperture can be arranged on the same level height like this, is convenient to install.
Characteristics of the present utility model are: adopt central dispense formula structure, every layer of material can both enter and be uniformly distributed in the annular crack runner from a minute fluid center, the influence that this method of salary distribution is not changed by extrusion capacity and material material also can, thereby the thin and thick that guarantees each layer film is even, has improved the quality of multi-layer compound film product.Can realize three layers, five layers, seven layers or MULTILAYER COMPOSITE.Divide the helicla flute that is provided with on the fluid can further adjust the uniformity of material.Charging aperture is arranged on the connected body, is convenient to install.
Fig. 1 is a structural representation of the present utility model.
Be described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, the present embodiment adopts five branch fluids (1), forms the five-layer co-squeezing die head.Innermost layer in five branch fluids is a cylinder, and all the other each layers are the different barrel-shaped body of diameter, these minutes fluid be to pack into from level to level from outside to inside, form annular crack runner (2) each other.Outermost layer divides and also forms one deck annular crack runner between fluid and the body.Divide between fluid and the core rod (3) at innermost layer to be provided with transition core (4), between core rod and die orifice (5), form the die gap (6) that confluxes.Be equipped with central dispense hole (7) and radial flow path (8) on each minute fluid, the central dispense hole is positioned at the center at the bottom of innermost layer divides fluid bottom and all the other each layer branch fluid buckets, radial flow path is distributed on the circumference at the bottom of innermost layer divides fluid and surplus each layer branch fluid bucket thereof, and is communicated with the central dispense hole.With the 3rd layer of branch fluid is example, an end of its center dispensing orifice be distributed on branch fluid bucket at the bottom of on radial flow path communicate, the other end is connected with charging aperture A on the connected body through being located at fourth, fifth layer of runner (9) on the branch fluid.The central dispense hole of dividing fluid except that outermost layer is directly with the connected body charging aperture is connected.The central dispense hole of all the other each layer branch fluids all divides the runner on the fluid to be connected with the connected body charging aperture through skin also as hereinbefore.
This programme has adopted three charging apertures, and they all are located on the connected body and are on the same level height, and wherein charging aperture A divides fluid that material is provided for the 3rd layer with innermost layer simultaneously, and promptly the material of this two-layer material is identical.Charging aperture B provides material for second, four layer simultaneously, and charging aperture C provides material for layer 5 divides fluid.In order further to distribute material, be provided with helicla flute (10) by on the branch fluid perisporium in radial flow path exit.Also be provided with accessories such as inlet channel and heater on this die head.
Claims (4)
1, a kind of multi-layer co-extruded die head, the multilayer that comprises core rod, die orifice, body, formation annular crack runner is divided fluid, connected body, it is characterized in that being equipped with the central dispense hole on every layer of branch fluid, corresponding charging aperture is connected one end in this hole on outer runner and the connected body that divides on the fluid through being located at, and the radial flow path of the other end through being uniformly distributed on the branch fluid circumference is connected with annular crack runner.
2, multi-layer co-extruded die head according to claim 1, it is characterized in that it is cylinder that multilayer is divided the innermost layer of fluid, all the other each layers are barrel-shaped body, divide the centre of fluid and the bucket centre, the end of all the other each layer branch fluids that the central dispense hole all is set at innermost layer, also be provided with the radial flow path that is connected with the central dispense hole on the circumference at the bottom of innermost layer divides fluid and all the other each layer branch fluid buckets.
3,, it is characterized in that being provided with helicla flute by on the branch fluid perisporium in radial flow path exit according to claim 1,2 described multi-layer co-extruded die heads.
4, multi-layer co-extruded die head according to claim 1 is characterized in that the charging aperture of this die head all is arranged on the connected body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99250282 CN2393707Y (en) | 1999-11-09 | 1999-11-09 | Multi-layer squeezing die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99250282 CN2393707Y (en) | 1999-11-09 | 1999-11-09 | Multi-layer squeezing die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2393707Y true CN2393707Y (en) | 2000-08-30 |
Family
ID=34035044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99250282 Expired - Fee Related CN2393707Y (en) | 1999-11-09 | 1999-11-09 | Multi-layer squeezing die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2393707Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427292C (en) * | 2005-03-18 | 2008-10-22 | 陈亦锋 | Co-extrusion mould head for packaging bag production |
| CN102689432A (en) * | 2012-05-21 | 2012-09-26 | 瑞安市金达包装机械制造有限公司 | Multi-channel flow dividing rotating body for film blowing machine |
| CN101670657B (en) * | 2009-09-29 | 2013-06-19 | 武汉新中德塑料机械有限公司 | Triple extrusion die head with low center |
| CN103231502A (en) * | 2013-04-28 | 2013-08-07 | 福建连众智惠实业有限公司 | Multi-layer coextrusion water-cooling blown film unit |
| CN106426866A (en) * | 2016-10-14 | 2017-02-22 | 福州大学 | Center feeding double-layer spiral large-width ultrathin film blowing machine head and work method thereof |
| CN109895363A (en) * | 2019-03-30 | 2019-06-18 | 广东金明精机股份有限公司 | Multilayer coextrusion film-blowing head |
-
1999
- 1999-11-09 CN CN 99250282 patent/CN2393707Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427292C (en) * | 2005-03-18 | 2008-10-22 | 陈亦锋 | Co-extrusion mould head for packaging bag production |
| CN101670657B (en) * | 2009-09-29 | 2013-06-19 | 武汉新中德塑料机械有限公司 | Triple extrusion die head with low center |
| CN102689432A (en) * | 2012-05-21 | 2012-09-26 | 瑞安市金达包装机械制造有限公司 | Multi-channel flow dividing rotating body for film blowing machine |
| CN103231502A (en) * | 2013-04-28 | 2013-08-07 | 福建连众智惠实业有限公司 | Multi-layer coextrusion water-cooling blown film unit |
| CN103231502B (en) * | 2013-04-28 | 2015-04-29 | 福建连众智惠实业有限公司 | Multi-layer coextrusion water-cooling blown film unit |
| CN106426866A (en) * | 2016-10-14 | 2017-02-22 | 福州大学 | Center feeding double-layer spiral large-width ultrathin film blowing machine head and work method thereof |
| CN109895363A (en) * | 2019-03-30 | 2019-06-18 | 广东金明精机股份有限公司 | Multilayer coextrusion film-blowing head |
| CN109895363B (en) * | 2019-03-30 | 2020-12-08 | 广东金明精机股份有限公司 | 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 |