CN105383033A - Multilayer composite coextrusion method and die based on rotary shear layer flow dynamic distribution - Google Patents
Multilayer composite coextrusion method and die based on rotary shear layer flow dynamic distribution Download PDFInfo
- Publication number
- CN105383033A CN105383033A CN201510789289.4A CN201510789289A CN105383033A CN 105383033 A CN105383033 A CN 105383033A CN 201510789289 A CN201510789289 A CN 201510789289A CN 105383033 A CN105383033 A CN 105383033A
- Authority
- CN
- China
- Prior art keywords
- annular channel
- melt
- polymer melt
- multilayer composite
- laminar flow
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- 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
- B29C48/30—Extrusion nozzles or dies
-
- 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
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/33—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles with parts rotatable relative to each other
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a multilayer composite coextrusion method and die based on rotary shear layer flow dynamic distribution. The method comprises the steps that after polymer melt coming from a plurality of extrusion machines enters an annular flow way from the outer wall face of the annular flow way, a laminar flow is formed on the inner wall face of the annular flow way under the rotary shear effect, the outer side of the polymer melt which enters the extrusion machines firstly is wrapped with the polymer melt which enters the extrusion machines backwards, and a round-section multilayer blank which evenly flows in the circumferential direction is formed on an outlet of the annular flow way. The die comprises a flow collection stator, a rotary core stick and a core stick heater. The flow collection stator is arranged on the periphery of the rotary core stick, the annular flow way with multiple layers of melt grooves is formed between the flow collection stator and the rotary core stick, the rotary core stick is externally connected with a drive device, and a core stick heater for preheating is arranged in the rotary core stick. The principle is simple, the polymer melt is composited in a die head, and equipment size and equipment cost are effectively reduced; and meanwhile, all layers of materials cannot permeate, and the performance of products is improved.
Description
Technical field
The present invention relates to polymer material molding technical field, particularly a kind of MULTILAYER COMPOSITE coextrusion method based on rotational shear laminar flow dynamic assignment and mould.
Background technology
Along with the continuous amplification of plastic products application, people also in continuous lifting, such as allow goods be made up of the raw material of multiple different qualities product requirement, make it have the good characteristic of several different material concurrently, realize different functions; Or be made up of the homogeneous raw material of different colours, thus obtain special outward appearance, now the die head of individual layer cannot satisfy the demands, and this just needs Multi-layer coextruding die head to realize.
Coextrusion technology is widely used in the production of laminated film, sheet material, tubing, profile shapes and electric wire, to meet improving SNR, to reduce costs, reduce environmental pollution and improve the requirement of outward appearance etc.Multilayer composite plastic product application is increasingly extensive, and the key of multi-layer co-extruded technology is Multilayer composite extrusion die head, and its structures shape the performance of multilayer composite product.
Current co-extrusion die head technology is mainly divided into multi-runner type co-extrusion die head technology and feed block formula co-extrusion die head technology.Multi-runner type co-extrusion die head is that melt just completes recombination process before entering die head, and feed block formula co-extrusion die head is the compound completing melt in die head.Multi-runner type co-extrusion die head has some numbers of plies melt tank corresponding with each layer size, each layer melt converge outside die head laggard enter co-extrusion die head, but multi-runner type co-extrusion die head bulky, melt flow path is long, extrusion pressure is large, extrude difficulty, and composite effect is not as the feed block formula co-extrusion die head of compound in mould.For several viscosity and the larger raw material of technological temperature difference, in mould, the advantage of co-extrusion will embody.Material feeding block order on request, by melt flow assignment, balances the speed of each component, is then flowed by melt stream, form composite bed, but the thickness evenness between each layer of shaping multilayer composite product is poor.The co-extrusion die head complex structure of compound in existing mould, melt long flow path, volume is large, high to the backpressure requirements of extruder, thus energy consumption is also high.
The problems such as the device structure existed for current Multilayer composite extrusion die head is huge, high cost, high energy consumption, develop a kind of novel MULTILAYER COMPOSITE coextrusion method based on rotational shear laminar flow dynamic assignment and mould is significant.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of MULTILAYER COMPOSITE coextrusion method based on rotational shear laminar flow dynamic assignment that structure is simple, energy consumption is lower, die pressure is little and melt residence time is shorter is provided.
Another object of the present invention is to provide a kind of MULTILAYER COMPOSITE co-extrusion die based on rotational shear laminar flow dynamic assignment for realizing said method.
Technical scheme of the present invention is: a kind of MULTILAYER COMPOSITE coextrusion method based on rotational shear laminar flow dynamic assignment, after entering annular channel from the polymer melt of multiple stage extruder from the outside wall surface of annular channel, laminar flow is formed under the rotational shear effect of annular channel internal face, after the polymer melt that enters be coated on outside the polymer melt that is introduced into, form the circular section multilayer blank of circumferencial direction Uniform Flow in annular channel exit.
When described polymer melt enters annular channel, enter successively from inside to outside in each layer melt tank of annular channel, namely in each polymer melt, polymer melt corresponding to innermost layer melt tank enters annular channel at first, then be positioned at its outer field polymer melt and enter annular channel again, after the polymer melt that enters successively be coated on outside the polymer melt that is introduced into, finally form multilayer blank.
When described polymer melt enters annular channel, the flow direction of polymer melt is the tangential direction of corresponding each layer melt tank.Polymer melt tangentially enters annular channel, can adjust the layout of melt tank and charging aperture according to the number of plies of composite article.
The number of plies of the number of units of described extruder, the melt tank number of plies of annular channel and stock is equal.
A kind of MULTILAYER COMPOSITE co-extrusion die based on rotational shear laminar flow dynamic assignment for realizing said method of the present invention, comprise afflux stator, rotate plug and plug heater, afflux stator is located at and is rotated plug periphery, and form the annular channel including multilayer melt tank between afflux stator and rotation plug, rotate the external drive unit of plug (by the rotating speed of the adjustable rotation plug of drive unit, it is made to adapt to the production of different goods different materials), rotate the plug heater that plug inside is provided with preheating.
The lateral wall of described afflux stator is provided with multiple charging aperture, and the quantity of charging aperture is equal with the melt tank number of plies of annular channel, and each charging aperture correspondence is communicated with one deck melt tank; Each charging aperture is connected to providing the extruder of corresponding polymer melt respectively.
Described annular channel comprises the feed zone and discharging section that are connected, and in feed zone, the deep equality everywhere of same melt groove, in discharging section, the degree of depth of same melt groove reduces gradually along polymer melt throughput direction.
Described mould also comprises a mouthful mould heating collar, and mouth mould heating collar is located at the afflux stator periphery corresponding with annular channel discharging section.
Described mould also comprises afflux heating collar, and afflux heating collar is located at the afflux stator periphery corresponding with annular channel feed zone.
For the stock of 5 Rotating fields, when the mould of said structure is applied to five layers of compound extruded blow moulding film equipment, its operation principle is: afflux stator outer surface has five charging apertures, connect along the circumferential direction equally distributed five extruders respectively, after entering from annular channel outside wall surface successively from the polymer melt of five extruders, laminar flow is formed under the rotational shear effect of annular channel internal face, after the melt coating that enters outside the melt be introduced into, the circular section multilayer blank of interruption-forming circumferencial direction Uniform Flow is gone out at annular channel, realize the uniform distribution of melt dynamic complex and circumferencial direction.
The present invention, relative to prior art, has following beneficial effect:
This based on MULTILAYER COMPOSITE coextrusion method of rotational shear laminar flow dynamic assignment and die theory simple, after entering from annular channel outside wall surface successively from the polymer melt of multiple stage extruder, laminar flow is formed under the rotational shear effect of annular channel internal face, after the melt coating that enters outside the melt be introduced into, go out the circular section multilayer blank of interruption-forming circumferencial direction Uniform Flow at annular channel.Polymer melt realizes compound in die head, effectively reduces equipment volume and equipment cost, meanwhile, due to rotational shear effect, forms interface between different melt layer, and each layer material can not interpenetrate, and product properties gets a promotion.
This is short based on the MULTILAYER COMPOSITE co-extrusion die melt flow process of rotational shear laminar flow dynamic assignment, can reduce the thermal degradation of melt in die head, improve the quality of products.
This MULTILAYER COMPOSITE co-extrusion die based on rotational shear laminar flow dynamic assignment is easy to operation and realizes, die pressure is little, coordinate the plasticizing extruder (can see the extruder disclosed in patent ZL200810026054.X) based on draft flowing deformation to use, effectively can reduce energy consumption.
In addition, this MULTILAYER COMPOSITE co-extrusion die based on rotational shear laminar flow dynamic assignment can be applicable to the circular section goods such as preparation MULTILAYER COMPOSITE extruding pipe material, MULTILAYER COMPOSITE inflation film, range of application is wider, the plasticizing extruder based on draft flowing deformation is coordinated to use, significantly can reduce equipment cost, reduction equipment volume, reduce energy consumption and promote the composite effect of multilayer composite product, applying flexible and extensively.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the MULTILAYER COMPOSITE coextrusion method based on rotational shear laminar flow dynamic assignment.
Fig. 2 is the F direction view of Fig. 1.
Fig. 3 is the structural representation of the MULTILAYER COMPOSITE co-extrusion die based on rotational shear laminar flow dynamic assignment.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
A kind of MULTILAYER COMPOSITE coextrusion method based on rotational shear laminar flow dynamic assignment of the present embodiment, (the present embodiment is five layers of co-extrusion as shown in Figure 1 or 2, i.e. A in figure, B, C, D, E respectively represents one deck stock and corresponding melt tank thereof, charging aperture and extruder), after entering annular channel from the polymer melt of multiple stage extruder from the outside wall surface of annular channel, laminar flow is formed under the rotational shear effect of annular channel internal face, after the polymer melt that enters be coated on outside the polymer melt that is introduced into, the circular section multilayer blank of circumferencial direction Uniform Flow is formed in annular channel exit.
Wherein, when polymer melt enters annular channel, enter successively from inside to outside in each layer melt tank of annular channel, namely in each polymer melt, polymer melt corresponding to innermost layer melt tank enters annular channel at first, then be positioned at its outer field polymer melt and enter annular channel again, after the polymer melt that enters successively be coated on outside the polymer melt that is introduced into, finally form multilayer blank.When polymer melt enters annular channel, the flow direction of polymer melt is the tangential direction of corresponding each layer melt tank.Polymer melt tangentially enters annular channel, can adjust the layout of melt tank and charging aperture according to the number of plies of composite article.
The number of plies of the number of units of extruder, the melt tank number of plies of annular channel and stock is equal.
For realizing the MULTILAYER COMPOSITE co-extrusion die based on rotational shear laminar flow dynamic assignment of said method, as shown in Figure 3, comprise afflux stator 1, rotate plug 2 and plug heater 3, afflux stator is located at and is rotated plug periphery, and form the annular channel including multilayer melt tank between afflux stator and rotation plug, rotate the external drive unit of plug (by the rotating speed of the adjustable rotation plug of drive unit, it is made to adapt to the production of different goods different materials), rotate the plug heater that plug inside is provided with preheating.
The lateral wall of afflux stator is provided with multiple charging aperture, and the quantity of charging aperture is equal with the melt tank number of plies of annular channel, and each charging aperture correspondence is communicated with one deck melt tank; Each charging aperture is connected to providing the extruder of corresponding polymer melt respectively.
Annular channel comprises the feed zone and discharging section that are connected, and in feed zone, the deep equality everywhere of same melt groove, in discharging section, the degree of depth of same melt groove reduces gradually along polymer melt throughput direction.
Mould also comprises mouthful mould heating collar 4 and afflux heating collar 5, and mouth mould heating collar is located at the afflux stator periphery corresponding with annular channel discharging section, and afflux heating collar is located at the afflux stator periphery corresponding with annular channel feed zone.
When the above-mentioned MULTILAYER COMPOSITE co-extrusion die based on rotational shear laminar flow dynamic assignment uses, its detailed process comprises the following steps:
(1) distribute mould by melt dynamic complex and connect five extruders, plug will be rotated and connect power source (i.e. drive unit);
(2) access power, rotate Mandrel Rotating;
(3) First extruder starts feeding, polymer melt annularly runner outside wall surface enters mould, and be coated on rotation plug outer surface, along with the rotation rotating plug, polymer melt moves along Way out (namely upwards), the innermost layer of this one polymer melt composition multilayer composite product;
(4) second extruders start feeding, polymer melt annularly runner outside wall surface enters mould, and be coated on the outer surface of innermost layer polymer melt, along with the rotation rotating plug, polymer melt moves along Way out (namely upwards), the second layer of this one polymer melt composition multilayer composite product;
(5) by that analogy, until five extruders feeding simultaneously, each polymer melt is successively coated on rotation mandrel surface along respective melt tank, along with rotation Mandrel Rotating, polymer melt realizes dynamic complex and distribution in mould, is molded into the circular section goods of the MULTILAYER COMPOSITE of uniform distribution.
(6) according to practical condition, regulate and rotate plug rotating speed, make it reach optimal effectiveness.
As mentioned above, just can realize the present invention preferably, above-described embodiment is only preferred embodiment of the present invention, is not used for limiting practical range of the present invention; Namely all equalizations done according to content of the present invention change and modify, all by the claims in the present invention scope required for protection is contained.
Claims (9)
1. the MULTILAYER COMPOSITE coextrusion method based on rotational shear laminar flow dynamic assignment, it is characterized in that, after entering annular channel from the polymer melt of multiple stage extruder from the outside wall surface of annular channel, laminar flow is formed under the rotational shear effect of annular channel internal face, after the polymer melt that enters be coated on outside the polymer melt that is introduced into, form the circular section multilayer blank of circumferencial direction Uniform Flow in annular channel exit.
2. a kind of MULTILAYER COMPOSITE coextrusion method based on rotational shear laminar flow dynamic assignment according to claim 1, is characterized in that, when described polymer melt enters annular channel, enter successively from inside to outside in each layer melt tank of annular channel.
3. a kind of MULTILAYER COMPOSITE coextrusion method based on rotational shear laminar flow dynamic assignment according to claim 2, it is characterized in that, when described polymer melt enters annular channel, the flow direction of polymer melt is the tangential direction of corresponding each layer melt tank.
4. a kind of MULTILAYER COMPOSITE coextrusion method based on rotational shear laminar flow dynamic assignment according to claim 1, it is characterized in that, the number of plies of the number of units of described extruder, the melt tank number of plies of annular channel and stock is equal.
5. the MULTILAYER COMPOSITE co-extrusion die based on rotational shear laminar flow dynamic assignment, it is characterized in that, comprise afflux stator, rotate plug and plug heater, afflux stator is located at and is rotated plug periphery, and form the annular channel including multilayer melt tank between afflux stator and rotation plug, rotate the external drive unit of plug, rotate the plug heater that plug inside is provided with preheating.
6. a kind of MULTILAYER COMPOSITE co-extrusion die based on rotational shear laminar flow dynamic assignment according to claim 5, it is characterized in that, the lateral wall of described afflux stator is provided with multiple charging aperture, the quantity of charging aperture is equal with the melt tank number of plies of annular channel, and each charging aperture correspondence is communicated with one deck melt tank; Each charging aperture is connected to providing the extruder of corresponding polymer melt respectively.
7. a kind of MULTILAYER COMPOSITE co-extrusion die based on rotational shear laminar flow dynamic assignment according to claim 5, it is characterized in that, described annular channel comprises the feed zone and discharging section that are connected, in feed zone, the deep equality everywhere of same melt groove, in discharging section, the degree of depth of same melt groove reduces gradually along polymer melt throughput direction.
8. a kind of MULTILAYER COMPOSITE co-extrusion die based on rotational shear laminar flow dynamic assignment according to claim 7, it is characterized in that, described mould also comprises a mouthful mould heating collar, and mouth mould heating collar is located at the afflux stator periphery corresponding with annular channel discharging section.
9. a kind of MULTILAYER COMPOSITE co-extrusion die based on rotational shear laminar flow dynamic assignment according to claim 7, it is characterized in that, described mould also comprises afflux heating collar, and afflux heating collar is located at the afflux stator periphery corresponding with annular channel feed zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510789289.4A CN105383033B (en) | 2015-11-17 | 2015-11-17 | MULTILAYER COMPOSITE coextrusion method and mould based on rotational shear laminar flow dynamically distributes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510789289.4A CN105383033B (en) | 2015-11-17 | 2015-11-17 | MULTILAYER COMPOSITE coextrusion method and mould based on rotational shear laminar flow dynamically distributes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105383033A true CN105383033A (en) | 2016-03-09 |
| CN105383033B CN105383033B (en) | 2017-12-01 |
Family
ID=55416125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510789289.4A Active CN105383033B (en) | 2015-11-17 | 2015-11-17 | MULTILAYER COMPOSITE coextrusion method and mould based on rotational shear laminar flow dynamically distributes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105383033B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626221A (en) * | 2016-12-09 | 2017-05-10 | 北京化工大学 | Ultra-high molecular weight polyethylene plasticizing injection molding method and equipment |
| CN114457443A (en) * | 2022-01-20 | 2022-05-10 | 广州华新科智造技术有限公司 | Core yarn preparation method and core yarn preparation machine |
| CN115157622A (en) * | 2022-06-15 | 2022-10-11 | 华南理工大学 | Multilayer melt spiral interweaving orientation co-extrusion blow molding die and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102015279A (en) * | 2008-05-01 | 2011-04-13 | 美国圣戈班性能塑料公司 | Multi-layered fuel tubing |
| CN103317697A (en) * | 2012-03-23 | 2013-09-25 | 上海金湖挤出设备有限公司 | Three-layer screw-type pipe coextrusion handpiece |
| CN103764369A (en) * | 2011-07-20 | 2014-04-30 | 帕拉斯蒂卡克里蒂斯公司 | Concentric co - extrusion die and a method of extruding a multilayer thermoplastic film |
| US20150064296A1 (en) * | 2013-09-04 | 2015-03-05 | Macro Engineering & Technology Inc. | Annular co-extrusion die |
-
2015
- 2015-11-17 CN CN201510789289.4A patent/CN105383033B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102015279A (en) * | 2008-05-01 | 2011-04-13 | 美国圣戈班性能塑料公司 | Multi-layered fuel tubing |
| CN103764369A (en) * | 2011-07-20 | 2014-04-30 | 帕拉斯蒂卡克里蒂斯公司 | Concentric co - extrusion die and a method of extruding a multilayer thermoplastic film |
| CN103317697A (en) * | 2012-03-23 | 2013-09-25 | 上海金湖挤出设备有限公司 | Three-layer screw-type pipe coextrusion handpiece |
| US20150064296A1 (en) * | 2013-09-04 | 2015-03-05 | Macro Engineering & Technology Inc. | Annular co-extrusion die |
Non-Patent Citations (2)
| Title |
|---|
| 谢建玲等: "《聚氯乙烯树脂及其应用》", 31 October 2007 * |
| 骆俊廷等: "《塑料成型模具设计 第2版》", 30 September 2014 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626221A (en) * | 2016-12-09 | 2017-05-10 | 北京化工大学 | Ultra-high molecular weight polyethylene plasticizing injection molding method and equipment |
| CN114457443A (en) * | 2022-01-20 | 2022-05-10 | 广州华新科智造技术有限公司 | Core yarn preparation method and core yarn preparation machine |
| CN115157622A (en) * | 2022-06-15 | 2022-10-11 | 华南理工大学 | Multilayer melt spiral interweaving orientation co-extrusion blow molding die and method |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105383033B (en) | 2017-12-01 |
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 | |
| CN1492802A (en) | Tubular multilayer films, method and apparatus for preparing the same | |
| CN102700144B (en) | Equipment and production process for forming cellular board by continuous extruding vacuum | |
| CN208827066U (en) | A kind of PE wood moulding bicolor co-extrusion flow liner mold | |
| CN105383033B (en) | MULTILAYER COMPOSITE coextrusion method and mould based on rotational shear laminar flow dynamically distributes | |
| CN2774751Y (en) | Three layer coextruding device for blow molding machine | |
| CN102173972A (en) | Production method and production line of conducting tube | |
| CN105398021B (en) | A kind of exhibition stream method of the full meshing gear of melt extrusion pressure-driven | |
| CN201712152U (en) | Tube extrusion molding mould | |
| CN102765179B (en) | Five-layer coextrusion plastic pipe forming die | |
| CN204869572U (en) | Three compound shape of mouth as one speakss of extruding of rubber | |
| CN202412660U (en) | Double-layer composite pipe headpiece | |
| CN106863735A (en) | A kind of extrusion method and its extrusion device of laminated plastics sheet material | |
| CN104325616A (en) | Production method of three-color co-extrusion plastic profile | |
| CN206048752U (en) | A kind of mould head of blow-moulding machine | |
| CN202753392U (en) | Five-layer co-extrusion pipe forming die | |
| CN106926427A (en) | A kind of preparation method of optical cable filling rope material double-layer coextrusion | |
| CN115503207A (en) | Forming method and die for producing multilayer composite film | |
| CN201728815U (en) | O-shaped structure of composite extrusion machine set | |
| CN206106516U (en) | Crowd thermophilic digestion deep -drawing membrane altogether for nine layers | |
| CN115157622B (en) | Multilayer melt spiral interweaving orientation coextrusion blow molding die and method | |
| CN207240792U (en) | The co-extruder head prepared for electric wire | |
| CN206201415U (en) | The different coextruded plastic film of fusing point it is die head especially used | |
| CN206170590U (en) | Remove black line device | |
| CN213382860U (en) | Double-barrelled double-deck single colored strip of plastic tubing extrusion production facility |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160805 Address after: 510075 Yuexiu District, Guangdong martyrs Road No. 83, South China University of Technology, Yuexiu patent technology service center Applicant after: South China University of Technology Applicant after: Guangzhou Huaxinke Industrial Co., Ltd. Applicant after: Dongguan City Zhengxin Packing Products Co., Ltd. Address before: 510075 Yuexiu District, Guangdong martyrs Road No. 83, South China University of Technology, Yuexiu patent technology service center Applicant before: South China University of Technology Applicant before: Guangzhou Huaxinke Industrial Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |