CN111791456A - Fiber-reinforced ABS material and preparation method thereof - Google Patents
Fiber-reinforced ABS material and preparation method thereof Download PDFInfo
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- CN111791456A CN111791456A CN202010674987.0A CN202010674987A CN111791456A CN 111791456 A CN111791456 A CN 111791456A CN 202010674987 A CN202010674987 A CN 202010674987A CN 111791456 A CN111791456 A CN 111791456A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/042—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with carbon fibres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/045—Reinforcing macromolecular compounds with loose or coherent fibrous material with vegetable or animal fibrous material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2355/00—Characterised by the use of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08J2323/00 - C08J2353/00
- C08J2355/02—Acrylonitrile-Butadiene-Styrene [ABS] polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/02—Cellulose; Modified cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a fiber reinforced ABS material and a preparation method thereof, and the fiber reinforced ABS material comprises the following steps: adding 75-90 parts by mass of ABS resin and 10-25 parts by mass of fiber into a double-screw extruder for melting, wherein the total parts of the ABS resin and the fiber is 100 parts, and the fiber comprises any one of natural fiber, glass fiber or carbon fiber; and extruding the obtained melt through a composite extruder die head to obtain the fiber reinforced ABS material. The fiber-reinforced ABS material prepared by the preparation method has good mechanical properties and good appearance.
Description
Technical Field
The invention belongs to the technical field of modified plastic processing, and particularly relates to a fiber reinforced ABS material and a preparation method thereof.
Background
The fiber reinforced ABS material has the advantages of low density, high modulus, high strength, high temperature resistance, chemical corrosion resistance, low thermal expansion coefficient and the like, and is widely applied to the fields of household appliances, energy sources, automobiles and the like. However, the fiber reinforced ABS material is easy to break and fluff at the die head by rubbing with the die head during processing, resulting in a decrease in properties such as mechanical strength.
In order to solve the problems, the prior art discloses an extruder composite die head for improving the friction between fibers and the die head, and solves the problems of more burrs on the appearance of a long fiber product and unsmooth smoothness. However, in the processing process, the horizontal direction of the molten composite material after being demoulded is not parallel to the direction of the open slot of the die head due to the action of gravity and traction force, and although the outer layer is coated by the branch base material, the phenomenon that the outlet of the die head rubs the resin, the orientation of the fiber in the resin is changed, even the fiber is broken by grinding exists, the fiber in the molten body is easily broken by the tip angle part of the trumpet-shaped design at the inlet of the die head, and the die head is easily worn. In addition, because the inner hole and the outer hole in the die head are directly connected, the melt strength of the fiber reinforced ABS material is sharply reduced in the processing process, so that the defect of broken bars is easy to occur.
Disclosure of Invention
In view of the above, the present invention provides a fiber reinforced ABS material and a method for preparing the same, wherein the raw materials are mixed, melted by a twin-screw extruder, and extruded by a compound extruder die head, and the joints between the inner hole inlet end and the outer hole outlet end of the compound extruder die head and the inner and outer holes are smooth arc segments, so as to solve the above problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a preparation method of a fiber reinforced ABS material, which comprises the following steps:
adding 75-90 parts by mass of ABS resin and 10-25 parts by mass of fiber into a double-screw extruder for melting, wherein the total part of the ABS resin and the fiber is 100 parts;
extruding the obtained melt through a composite extruder die head to prepare a fiber reinforced ABS material;
the die head body consists of an inner die head and an outer die head, cylindrical inner holes and cylindrical outer holes are respectively arranged in the inner die head and the outer die head, and the inner holes and the outer holes are collinear in axis and are communicated with each other; the entry end of hole with the exit end in outer hole is loudspeaker form and is the circular arc curved surface, the hole with the junction in outer hole is smooth circular arc changeover portion.
Further, the extrusion process also comprises the working procedures of water cooling, air drying, grain cutting and packaging.
Further, the diameter of the outer hole is 0.4-0.8mm larger than that of the inner hole.
Furthermore, the circular arc transition section comprises a first arc section which is connected with and tangent to the hole wall of the outer hole and a second arc section which is connected with and tangent to the hole wall of the inner hole, and the first arc section is smoothly connected with and has opposite bending direction to the second arc section.
Furthermore, the R angle values of the first arc section and the second arc section are the same and are both 0.2-0.4 mm.
The invention also provides a fiber reinforced ABS material prepared by the preparation method of any one of the above materials.
The special die head is adopted to prepare the fiber reinforced ABS material, so that the damage caused by the friction between the fiber and the die head in the production process and the strip breakage phenomenon caused by the abrupt drop of the melt strength are avoided, and the appearance and partial performance of the fiber reinforced ABS material are improved; in addition, due to the use of the die head, the abrasion of die head equipment is further reduced, the production efficiency is improved, and the feasibility of continuous production of the fiber reinforced ABS material is improved.
Drawings
FIG. 1 is a sectional view showing the structure of a die used for producing a fiber-reinforced ABS material according to comparative example 1 of the present invention;
FIG. 2 is a sectional view of a die structure used in the production of the fiber-reinforced ABS material in example 1 of the present invention.
In the figure: 10-outer die head, 20-inner die head, 30-arc transition section, 101-outer hole, 201-inner hole, 301-first arc section and 302-second arc section.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the specific embodiments illustrated. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The invention provides a preparation method of a fiber reinforced ABS material, which comprises the following steps:
adding 75-90 parts by mass of ABS resin and 10-25 parts by mass of fiber into a double-screw extruder for melting, wherein the total part of the ABS resin and the fiber is 100 parts, and it is understood that the processing temperature of the double-screw extruder can be adjusted according to the types of matrix resin and fiber, and therefore, the processing temperature is not particularly limited;
extruding the obtained melt through a composite extruder die head to prepare a fiber reinforced ABS material;
wherein the compound extruder die head comprises a die head body, the die head body is composed of an inner die head and an outer die head, and it can be understood that the connection mode of the inner die head and the outer die head is the conventional connection mode in the field, such as bolt fastening connection, and the details are not illustrated; the inner die head and the outer die head are respectively provided with a cylindrical inner hole and a cylindrical outer hole, and the axes of the inner hole and the outer hole are collinear and are communicated with each other; the entry end of hole with the exit end in outer hole is loudspeaker form and is the circular arc curved surface, the hole with the junction in outer hole is smooth circular arc changeover portion.
In the existing production process, in the extrusion process, the phenomenon that the outlet of a die head rubs resin, the orientation of fibers in the resin is changed, and even the fibers are broken by grinding exists, the fibers in a melt body are easily broken by a horn-shaped designed sharp corner part at the inlet of the die head, and the die head is easily worn and cannot be continuously produced; and the inner hole and the outer hole in the die head are directly connected, so that the melt strength of the fiber reinforced ABS material is sharply reduced in the processing process, and the defect of broken bars is easy to occur. According to the invention, the special die head is innovatively applied to the preparation process of the fiber reinforced ABS material, but when the fiber enters the outer hole from the inner hole, the molten ABS filled in the outer hole can perform one-time integral lubrication coating on the periphery of the fiber, so that the appearance is smooth and flat, the inlet end (namely the feeding end) of the inner hole is horn-shaped and is an arc surface, the smooth fiber entering the die head is facilitated, and the fiber and the die head cannot be damaged; the outlet end (namely the discharge end) of the outer hole is also trumpet-shaped and is an arc surface, so that the condition that the orientation of the fiber in the resin is changed and even broken due to the fact that the resin base material is rubbed with the die head because the traction direction is inconsistent with the direction of the open slot of the die hole can be avoided, and the mechanical property of the fiber reinforced ABS material is further influenced. Furthermore, the connection part of the inner hole and the outer hole is a smooth arc transition section, so that the stable transition of the melt strength can be realized in the process that the melt passes through the inner hole and the outer hole, the defect that the melt strength is suddenly reduced to generate broken bars is avoided, and the prepared fiber reinforced ABS material has good appearance. It is to be understood that the kind of the ABS resin and the fiber in the present invention is not particularly limited, and both of the ABS resin and the fiber in the art may be used.
Further, the extrusion process also comprises the working procedures of water cooling, air drying, grain cutting and packaging. It is understood that the water cooling, air drying, granulating and packaging processes are conventional in the art and will not be described in detail herein.
Further, the diameters of the outer hole and the inner hole of the die used in the preparation method may be conventionally selected in the art, and preferably, the diameter of the outer hole is 0.4 to 0.8mm larger than the diameter of the inner hole.
Furthermore, the circular arc transition section comprises a first arc section which is connected with and tangent to the hole wall of the outer hole and a second arc section which is connected with and tangent to the hole wall of the inner hole, and the first arc section is smoothly connected with and has opposite bending direction to the second arc section.
Further, the R angle values of the first arc segment and the second arc segment can be adjusted according to the diameters of the inner hole and the outer hole, and preferably, in some embodiments of the present invention, the R angle values of the first arc segment and the second arc segment are the same and are both 0.2-0.4 mm.
In a second aspect, the invention provides a fiber reinforced ABS material, which is prepared by the preparation method according to the first aspect of the invention.
The technical solution of the present invention will be more clearly and completely described below with reference to specific embodiments.
In the following examples and comparative examples, the ABS resin used was MG94 brand of Tianjin Staphyl, the glass fiber was 510 brand of Jushi group, the natural fiber was bleached jute yarn of Xiaoshan Jiawei hemp products, Inc. of Hangzhou, having a 3.7/2 strand gauge, and the carbon fiber was SYT49S of Zhonghuan eagle.
Examples
ABS resin and fiber are added into a double-screw extruder according to the corresponding parts by mass in the examples 1-3 of the table 1 for melting, wherein the processing temperature of the double-screw extruder is as follows: 190 ℃ in the first zone, 220 ℃ in the second zone, 220 ℃ in the third zone, 220 ℃ in the fourth zone, 210 ℃ in the fifth zone, 210 ℃ in the sixth zone, 200 ℃ in the seventh zone, 200 ℃ in the eighth zone, 200 ℃ in the ninth zone, and 220 ℃ in the tenth zone;
and extruding the obtained melt through a composite extruder die head, sequentially carrying out water cooling, air drying, compression roller and grain cutting to obtain the fiber reinforced ABS material, and observing by naked eyes to obtain the fiber reinforced ABS material with uniform, smooth and flat appearance and no burrs.
The adopted structure of the composite extruder die head is shown in fig. 2 and comprises a die head body, wherein the die head body consists of an inner die head 20 and an outer die head 10, the inner parts of the inner die head 20 and the outer die head 10 are respectively provided with a cylindrical inner hole 201 and a cylindrical outer hole 101, the axes of the inner hole 201 and the outer hole 101 are collinear and mutually communicated, and the diameter of the outer hole 101 in the embodiment is 0.5mm larger than that of the inner hole 201; the inlet end of the inner hole 201 and the outlet end of the outer hole 101 are both in a horn shape and are both arc curved surfaces, and the joint of the inner hole 201 and the outer hole 101 is a smooth arc transition section 30. Specifically, the arc transition section 30 includes a first arc section 301 connected and tangent to the hole wall of the outer hole 101, and a second arc section 302 connected and tangent to the hole wall of the inner hole 201, and the first arc section 301 and the second arc section 302 are smoothly connected and have opposite bending directions. Furthermore, in the embodiment, the R-angle values of the first arc segment 301 and the second arc segment 302 are the same and are 0.25 mm. When the die head is used specifically, the die head body is arranged at the discharge outlet of a fiber feeding device, fibers are fully mixed and infiltrated by the feeding device and ABS resin and then respectively enter the inner hole 201 from the inlet end of the inner hole 201 on the die head body, then enter the outer hole 101 through the arc transition section 30 to coat the surface of the fibers, and finally are extruded through the outlet end of the outer hole 101.
Comparative example
Compared with the examples, the preparation method of the fiber reinforced ABS material in the comparative examples 1 to 3 is different from the examples only in the structure of the extrusion die, and the other steps are the same as the corresponding examples (see the table 1 specifically), so that the obtained fiber reinforced ABS material has burrs in appearance and is not smooth and uneven.
The structure of the extrusion die head adopted by the comparative example is shown in figure 1, the die head body is composed of an inner die head 20 and an outer die head 10, the inner die head 20 and the outer die head 10 are respectively provided with a cylindrical inner hole 201 and a cylindrical outer hole 101, the axes of the inner hole 201 and the outer hole 201 are collinear and are communicated, the diameter of the outer hole 201 is 0.5mm larger than that of the inner hole 101, and the inlet end of the inner hole 101 is horn-shaped.
TABLE 1 compositions and addition parts (parts by mass) of fiber-reinforced ABS materials in examples and comparative examples
The fiber reinforced ABS materials prepared in the examples and comparative examples were respectively subjected to performance tests, and the results are shown in Table 2.
TABLE 2 Performance test results for fiber reinforced ABS materials
From the test results in table 2, it can be seen that the fiber reinforced ABS material prepared by the preparation method has significantly improved mechanical properties compared to the comparative example, wherein, taking example 1 and comparative example 1 as examples, the tensile strength is increased to 106%, the flexural strength and flexural modulus are increased to 110%, and the izod notched impact strength is increased to 126%.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. The preparation method of the fiber reinforced ABS material is characterized by comprising the following steps:
adding 75-90 parts by mass of ABS resin and 10-25 parts by mass of fiber into a double-screw extruder for melting, wherein the total parts of the ABS resin and the fiber is 100 parts, and the fiber comprises any one of natural fiber, glass fiber or carbon fiber;
extruding the obtained melt through a composite extruder die head to prepare a fiber reinforced ABS material;
the die head body consists of an inner die head and an outer die head, cylindrical inner holes and cylindrical outer holes are respectively arranged in the inner die head and the outer die head, and the inner holes and the outer holes are collinear in axis and are communicated with each other; the entry end of hole with the exit end in outer hole is loudspeaker form and is the circular arc curved surface, the hole with the junction in outer hole is smooth circular arc changeover portion.
2. The method of claim 1, wherein the extrusion further comprises the steps of water cooling, air drying, pelletizing and packaging.
3. The method of claim 1, wherein the diameter of the outer bore is 0.4 to 0.8mm greater than the diameter of the inner bore.
4. The method of claim 1, wherein the arc transition comprises a first arc segment connected to and tangent to the wall of the outer bore and a second arc segment connected to and tangent to the wall of the inner bore, the first arc segment and the second arc segment being smoothly connected and curving in opposite directions.
5. The method of claim 1, wherein the first arc segment and the second arc segment have the same R-angle value and are each 0.2-0.4 mm.
6. A fiber-reinforced ABS material, characterized in that it is produced by the production process according to any of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010674987.0A CN111791456A (en) | 2020-07-14 | 2020-07-14 | Fiber-reinforced ABS material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010674987.0A CN111791456A (en) | 2020-07-14 | 2020-07-14 | Fiber-reinforced ABS material and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0579821A1 (en) * | 1992-02-06 | 1994-01-26 | Vetrotex France Sa | Device for sheathing a filiform material with a molten substance. |
| CN102202852A (en) * | 2008-10-29 | 2011-09-28 | 拜尔材料科学股份公司 | Extrusion nozzle for polymers |
| CN202753378U (en) * | 2012-08-16 | 2013-02-27 | 合肥会通新材料有限公司 | Extruder combined type die head |
| CN106827448A (en) * | 2017-03-21 | 2017-06-13 | 四川业勃利亨桂骄明威管业有限公司 | A kind of steel plastic composite wound pipe band extruded mould |
| US20180065318A1 (en) * | 2016-09-06 | 2018-03-08 | Cc3D Llc | Additive manufacturing system having multi-channel nozzle |
-
2020
- 2020-07-14 CN CN202010674987.0A patent/CN111791456A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0579821A1 (en) * | 1992-02-06 | 1994-01-26 | Vetrotex France Sa | Device for sheathing a filiform material with a molten substance. |
| CN102202852A (en) * | 2008-10-29 | 2011-09-28 | 拜尔材料科学股份公司 | Extrusion nozzle for polymers |
| CN202753378U (en) * | 2012-08-16 | 2013-02-27 | 合肥会通新材料有限公司 | Extruder combined type die head |
| US20180065318A1 (en) * | 2016-09-06 | 2018-03-08 | Cc3D Llc | Additive manufacturing system having multi-channel nozzle |
| CN106827448A (en) * | 2017-03-21 | 2017-06-13 | 四川业勃利亨桂骄明威管业有限公司 | A kind of steel plastic composite wound pipe band extruded mould |
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