CN106827448A - A kind of steel plastic composite wound pipe band extruded mould - Google Patents
A kind of steel plastic composite wound pipe band extruded mould Download PDFInfo
- Publication number
- CN106827448A CN106827448A CN201710171212.XA CN201710171212A CN106827448A CN 106827448 A CN106827448 A CN 106827448A CN 201710171212 A CN201710171212 A CN 201710171212A CN 106827448 A CN106827448 A CN 106827448A
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- Prior art keywords
- band
- cavity
- template
- chamber
- current stabilization
- Prior art date
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Classifications
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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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
-
- 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
- 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
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of steel plastic composite wound pipe band extruded mould, belong to die for strips of winding pipes technical field, including the shaping mould and stock mould set gradually along band outbound course, there is spacing between shaping mould and stock mould；Shaping mould includes that what is be sequentially connected enters mouth template, current stabilization template, guiding template and outlet template；Entering mouth template has charging aperture, and current stabilization template has current stabilization chamber, and guiding template has lead-in cavity, and outlet template has band forming cavity；Charging aperture, current stabilization chamber, lead-in cavity, band forming cavity are sequentially communicated；Charging aperture is less than current stabilization chamber, and current stabilization chamber is adapted with lead-in cavity profile；Lead-in cavity is more than band forming cavity, and with the guiding circular arc gradually tapered up to band forming cavity；Stock mould has the band sizing chamber corresponding with band forming cavity.By the size variation of the shape of the mouth as one speaks, Guidance Design and progressive formation of charging aperture, current stabilization chamber, lead-in cavity and band forming cavity, the stabilization shaping of double buckle band is realized.
Description
Technical field
The present invention relates to die for strips of winding pipes technical field, in particular to a kind of steel plastic composite wound pipe band
Extruded mould.
Background technology
Steel plastic compount wound drain pipe applies to the pipeline of the engineerings such as urban drainage, industrial water drainage and agricultural drain.It is
Formed by the polyethylene strip of internal layer and the steel fastener spiral winding of outer layer.The extrusion moulding of polyethylene is related to polythene material
Addition, the heating of mixing material, the control of temperature, it is into the technical matters that the flow and pressure of mould are all profile bands
Parameter, the significantly construction of mould, different mold structures can obtain entirely different output band, to later stage band
Shaping and assembling have conclusive effect.
Being fastened for polyethylene strip be mostly to be fixed with hot melt strip hot melting cohesion by between adjacent tapes, easily in interface
There is crackle, easy to leak in place.Afterwards design by band both sides double buckle is by adjacent tapes snapping and heats, with reference to sealing property
Good, intensity is high, practical, and existing polyethylene extruded mould cannot obtain the band.Now design a set of particular manufacturing craft matching
The shaping setting process of the band, it is smooth, stably obtain band.
The content of the invention
It is an object of the invention to provide a kind of steel plastic composite wound pipe band extruded mould, to realize that there is double buckle band
The stabilization shaping of material.
To realize the object of the invention, the technical scheme for using for：A kind of steel plastic composite wound pipe band extruded mould, including
The shaping mould and stock mould set gradually along band outbound course, have spacing between shaping mould and stock mould；Shaping mould includes
What is be sequentially connected enters mouth template, current stabilization template, guiding template and outlet template；Entering mouth template has charging aperture, current stabilization template tool
There is current stabilization chamber, guiding template has lead-in cavity, and outlet template has band forming cavity；Charging aperture, current stabilization chamber, lead-in cavity, band
Forming cavity is sequentially communicated；Charging aperture is less than current stabilization chamber, and current stabilization chamber is adapted with lead-in cavity profile；Lead-in cavity is molded more than band
Chamber, and with the guiding circular arc gradually tapered up to band forming cavity；Stock mould is fixed with the band corresponding with band forming cavity
Die cavity.
As other Strips, its width is section width to winding pipe polyethylene strip, and thickness is band total thickness,
Length is the band development length perpendicular to section, and band forming cavity is the shape size of correspondence polyethylene strip.With son
Two ends on the width of box band are the parent part and component of respectively double buckle, and parent part is slot shape, and component is projection
Shape.In band helical wrapping process, band is fastened with the parent part of adjacent tapes by component and welding is fixed.
Further, the guiding circular arc correspondence is in the upper and lower part of band forming cavity thickness direction.
Further, the current stabilization chamber is rectangular cavity, and side long is consistent with the strip width direction of band forming cavity；Current stabilization
The corner in chamber is arc chord angle.
Further, the charging aperture is round mouth, a diameter of 55mm-65mm；The side long of current stabilization chamber and lead-in cavity is
185mm-195mm, short side is 85mm-95mm.
Further, the radius that circular arc is guided in the lead-in cavity is 45mm-55mm.
Further, the charging aperture has the transition arc being connected with current stabilization chamber.
Further, it is described enter mouth template be formed by fixedly connecting by template and joint, charging aperture located at joint center；Connect
Head has external screw thread.
Further, it is described enter mouth template, current stabilization template, guiding template and outlet template be bolted to connection.
Further, the stock mould includes die body and the die cap being articulated with die body；The joint shape of die body and die cap
Into band sizing chamber, the two ends in band sizing chamber are respectively parent part die cavity and component die cavity in band double buckle；Die body
Groove is provided with upper correspondence parent part die cavity, the lower surface of die cap is provided with raised line corresponding with groove, raised line outer wall and groove inner wall
Between form the parent part die cavity；The component die cavity is opened on die body.
Further, the cooling water channel around band sizing chamber, cooling water channel are equipped with the die body and die cap
Set along band outbound course；The water inlet and water return outlet communicated with respective cooling water channel are equipped with die body and die cap.
Further, the lower end of the die body is provided with base, and base offers two mounting holes being arranged side by side, and kidney-shaped
Hole is to be set along the strip width direction in band sizing chamber.
Beneficial effects of the present invention：
1st, the polyethylene plastic of hot mastication is squeezed into shaping mould after mixing, and shaping mould is transitioned into larger current stabilization by charging aperture
Chamber, the plastic liquid of entrance enters the current stabilization stage, then steadily enters lead-in cavity, and lead-in cavity is adapted with current stabilization chamber, Ran Houjing
Guiding circular arc gradually fades to the shape for zooming in, the shape needed for being then fully shaped to band to the exit of band forming cavity；
It is real by the size variation of the shape of the mouth as one speaks, Guidance Design and progressive formation of charging aperture, current stabilization chamber, lead-in cavity and band forming cavity
The stabilization shaping of existing double buckle band, can match with the characteristic for softening polyethylene material.Through the polyethylene that shaping mould is exported
Pre-profiling plastic enters stock mould, in transmitting procedure of the band in stock mould, is rapidly cooled, and is twined from stock mould output completion
Around the extrusion process of band；
2nd, this set extruded mould considers to design through several respects combined factors：The raw material proportioning of polyethylene material；Polyethylene material
Softening temperature；The shaping physical dimension of polyethylene material；The transmission speed of finished product band；The environment temperature of mould.Shaping
Mould dimensionally employs the structure design of each template and chamber, and the slow of lead-in cavity guiding circular arc tightens up gradient ramp design,
There are rounder and more smooth first type mouthful, the extrusion moulding of abundant and continuous-stable.And can use circular arc chamfering in all corners in chamber
Design, with ensure material by when more smooth and extrusion process be molded；
3rd, stock mould and is formed band and shaped chamber using the Split type structure of radial type by the fit structure of die body and die cap,
The primary and secondary buckle structure at two ends correspondence band two ends, the cooling and shaping that realization is carried out to band, simple structure, it is to avoid traditional one
Not easy processing and precision controlling problem that chamber is present, the processing of this stock mould more facilitate；And by with band outbound course
Consistent cooling water channel is cooled down, band from stock mould export when, be down to less than 100 DEG C, be completely wound band extrusion molding determine
Type.
Brief description of the drawings
Fig. 1 is the structural representation of shaping mould in steel plastic composite wound pipe band extruded mould of the present invention；
Fig. 2 is the vertical view cutaway drawing of shaping mould；
Fig. 3 is sectional view at A-A in Fig. 2；
Fig. 4 is the front view of stock mould in steel plastic composite wound pipe band extruded mould of the present invention；
Fig. 5 is the top view of stock mould；
Fig. 6 is the side view of stock mould；
Fig. 7 is the schematic perspective view of stock mould open mode；
Fig. 8 is the structural representation for transmitting upper die and lower die in die body.
Specific embodiment
The present invention is described in further detail below by specific embodiment and with reference to accompanying drawing.
Fig. 1 to Fig. 8 shows the steel plastic composite wound pipe band extruded mould of present invention offer, including along band output side
To the shaping mould and stock mould that set gradually, there is spacing between shaping mould and stock mould；Shaping mould includes that what is be sequentially connected enters
Mouth template 1, current stabilization template 2, guiding template 3 and outlet template 4；Enter mouth template 1 with charging aperture 5, current stabilization template 2 has current stabilization
Chamber 6, guiding template 3 has lead-in cavity 7, and outlet template 4 has band forming cavity 8；Charging aperture 5, current stabilization chamber 6, lead-in cavity 7, band
Material forming cavity 8 is sequentially communicated；Charging aperture 5 is less than current stabilization chamber 6, and current stabilization chamber 6 is adapted with the profile of lead-in cavity 7；Lead-in cavity 7 is more than band
Material forming cavity 8, and with the guiding circular arc 9 gradually tapered up to band forming cavity 8；Stock mould has relative with band forming cavity 8
The band sizing chamber 10 answered.Band forming cavity 8 is matched with ribbon shape.
The guiding correspondence of circular arc 9 is in the upper and lower part of the thickness direction of band forming cavity 8.Up and down the two of band forming cavity 8
The polyethylene material that its guided inside of direction softens, makes uniform thickness direction, stabilization, sufficiently clamp-ons band forming cavity 8.Band
Section configuration is various, and the fin being spaced on thickness direction needs to ensure that the smooth of polyethylene continuously clamp-ons shaping, it is to avoid entrance
Front and rear difference causes Forming Quality, is molded band integral extrusion uneven；It also avoid the two ends or middle part on width
It is preferential to flow into polyethylene material and cause Forming Quality problem.Good extrusion molding effect can be reached by the guiding of upper and lower,
Guide function, the more balanced synchronization of extrusion moulding in correspondence strip width and thickness direction, it is ensured that extrusion molding are not only acted as
Quality.
Current stabilization chamber 6 is rectangular cavity, and side long is consistent with the strip width direction of band forming cavity 8, and correspondence is ensured with more preferable
Uniform extrusion molding on width；The corner in current stabilization chamber 6 is arc chord angle, it is to avoid on the corner has polyethylene material to accumulate, also makes
The smooth extrusion process shaping of polyethylene.
Charging aperture 5 is round mouth, a diameter of 55mm-65mm；The side long of current stabilization chamber 6 and lead-in cavity 7 is 185mm-195mm,
Short side is 85mm-95mm, and the Parameters variation of the corresponding whole shaping mould inner cavity chamber for being formed of the size design is squeezed with this band
It is moulded type characteristics match.Current stabilization chamber 6 and the overall profile of lead-in cavity 7 are adapted, and are rectangle, and set at the output of lead-in cavity 7
Put guiding circular arc 9.The radius for guiding circular arc 9 is 45mm-55mm, realizes slowly tightening up gradual change through the circular curve of the gradual change, is had
Rounder and more smooth first type mouthful, fully and continuous-stable extruded polyethylene to band forming cavity 8.The thickness of slab of current stabilization template 2 is more than leads
Draw the thickness of slab of template 3, make spatial volume in current stabilization chamber 6 more than the spatial volume of lead-in cavity 7, it is ensured that it is relative hand over suitable space with
For the current stabilization stage, so that current stabilization chamber 6 is continual and steady to the extruded polyethylene of lead-in cavity 7.Charging aperture 5 has what is be connected with current stabilization chamber 6
Transition arc 11, extruding flowing is smooth.
Enter mouth template 1 to be formed by fixedly connecting by template and joint 12, charging aperture 5 is located at the center of joint 12；Joint 12 has
There is external screw thread, external screw thread may be connected to extrusion moulding equipment, connected with the material outlet sealing of extrusion moulding equipment.Enter mouth template
1st, current stabilization template 2, guiding template 3 and outlet template 4 are bolted to connection.Outside cladding electric heating layer after four assemblings,
Ensure that there is certain high temperature in mould to reach extrusion moulding state.
The polyethylene pre-profiling plastic exported through shaping mould is still in larger temperature（140-170℃）, still in softening
State, the edge of cross section be all with certain arc-shaped, through the spacing air cooling between shaping mould and stock mould after,
Into stock mould porch, then shape can occur small change, mainly in the corner size at edge, to the outlet of stock mould
Place is then final band finished product, in transmitting procedure of the band in stock mould, is rapidly cooled, and when reaching exit, is down to 100
Below DEG C, the extrusion process of band is completely wound.
Stock mould includes die body 13 and the die cap 14 being articulated with die body 13, and Fig. 6 is seen in hinged place；Die body 13 and die cap 14
Joint forms band sizing chamber 10, and the two ends in band sizing chamber 10 are respectively parent part die cavity 15 and component in band double buckle
Die cavity 16, that is, correspond to the two ends on strip width direction；Groove 17 is provided with correspondence parent part die cavity 15 on die body 13, die cap 14
Lower surface is provided with raised line 18 corresponding with groove 17, and parent part die cavity 15 is formed between the outer wall of raised line 18 and the inwall of groove 17；Component
Die cavity 16 is opened on die body 13.See that Fig. 4 and Fig. 7 illustrates.
The cooling water channel 19 around band sizing chamber 10 is equipped with die body 13 and die cap 14, cooling water channel 19 is along band
Material outbound course is set；The water inlet 20 and water return outlet communicated with respective cooling water channel 19 are equipped with die body 13 and die cap 14
21, the band sizing chamber 10 to being formed between die body 13 and die cap 14 carries out sufficiently cool, each band in correspondence band sizing chamber 10
There is cooling water channel 19 around material is raised, cooling is fully and speed is fast, sees Fig. 4, and water outlet is not illustrated in Fig. 7.On die body 13
Each cooling water channel 19 realizes water inlet and water outlet, each cooling on die cap 14 by the water inlet 20 and water return outlet 21 of the one end of die body 13
Water channel 19 realizes water inlet and water outlet by the water inlet 20 and water return outlet 21 of the one end of die cap 14.
The lower end of die body 13 is provided with base 22, and base 22 offers two mounting holes 23 being arranged side by side, and mounting hole 23
It is to be set along the strip width direction in band sizing chamber 10, to adjust the relative position of stock mould and shaping mould, is molded band
Chamber 8 and band sizing chamber 10 are well corresponding, and the band of shaping mould output can smooth entrance stock mould.Band sizing chamber on stock mould
10 edge is respectively provided with circular arc chamfering.
By hinge in one end of die body 13, the other end of die cap 14 is provided with handle 24, passes through for one end of die cap 14
Handle 24 carries out the keying of die cap 14, and handle 24 is arc, and its two ends is fixed on the one end of die cap 14.Die cap 14 and mould after closure
It is fixedly secured by screw between body 13.Band sizing also has and band in chamber 10 between parent part die cavity 15 and component die cavity 16
The T-shaped chamber that T-shaped raised line matches.
The output end of stock mould is connected with cooling transmission mould, and cooling transmission mould is included in cell body, cell body along band output side
To transmission die body is interval with, transmission die body includes upper mould 25 and lower mould 26, sees Fig. 8, is formed between upper mould 25 and lower mould 26
With the Web Transporting chamber of the band sizing Corresponding matching of chamber 10.The outer edge in Web Transporting chamber is respectively provided with circular arc chamfering.Web Transporting
Chamber is identical with the structure in band sizing chamber 10, and it is also groove, the lower surface of upper mould 25 to be corresponded on lower mould 26 at parent part die cavity 15
There is raised line corresponding with groove, parent part die cavity 15 is formed between raised line outer wall and groove inner wall；Component die cavity 16 is opened in lower mould 26
On.In through cooling transmission mould, can be supplied water in cell body by outside, further be cooled down while conveying.
After extruded mould of the invention is according to effective dispensing, it is adequately mixed and merges at high temperature, is then set by extrusion molding
It is standby, cooling transmission mould is sent to through overmolding and stock mould, deliver to and collected at curling.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, there can be various modifications and variations in the spirit and principles in the present invention, these equivalent modifications or replacement etc.,
It is all contained within protection scope of the present invention.
Claims (10)
1. a kind of steel plastic composite wound pipe band extruded mould, it is characterised in that including what is set gradually along band outbound course
Shaping mould and stock mould, have spacing between shaping mould and stock mould；Shaping mould includes that what is be sequentially connected enters mouth template, current stabilization mould
Plate, guiding template and outlet template；Entering mouth template has charging aperture, and current stabilization template has current stabilization chamber, and guiding template has guiding
Chamber, outlet template has band forming cavity；Charging aperture, current stabilization chamber, lead-in cavity, band forming cavity are sequentially communicated；Charging aperture is less than
Current stabilization chamber, current stabilization chamber is adapted with lead-in cavity profile；Lead-in cavity is more than band forming cavity, and with gradually being received to band forming cavity
The guiding circular arc of contracting；Stock mould has the band sizing chamber corresponding with band forming cavity.
2. steel plastic composite wound pipe band extruded mould according to claim 1, it is characterised in that the guiding circular arc pair
Should be in the upper and lower part of band forming cavity thickness direction.
3. steel plastic composite wound pipe band extruded mould according to claim 1, it is characterised in that the current stabilization chamber is square
Shape chamber, and side long is consistent with the strip width direction of band forming cavity；The corner in current stabilization chamber is arc chord angle.
4. steel plastic composite wound pipe band extruded mould according to claim 3, it is characterised in that the charging aperture is circle
Mouthful, a diameter of 55mm-65mm；The side long of current stabilization chamber and lead-in cavity is 185mm-195mm, and short side is 85mm-95mm.
5. steel plastic composite wound pipe band extruded mould according to claim 1, it is characterised in that led in the lead-in cavity
The radius for drawing circular arc is 45mm-55mm.
6. steel plastic composite wound pipe band extruded mould according to claim 1, it is characterised in that the charging aperture has
The transition arc being connected with current stabilization chamber.
7. steel plastic composite wound pipe band extruded mould according to claim 1, it is characterised in that it is described enter mouth template by
Template and joint are formed by fixedly connecting, and charging aperture is located at the center of joint；Joint has external screw thread.
8. steel plastic composite wound pipe band extruded mould according to claim 1, it is characterised in that the stock mould includes
Die body and the die cap being articulated with die body；Die body forms the band sizing chamber, the two of band sizing chamber with the joint of die cap
End is respectively parent part die cavity and component die cavity in band double buckle；Groove is provided with correspondence parent part die cavity on die body, die cap
Lower surface is provided with raised line corresponding with groove, and the parent part die cavity is formed between raised line outer wall and groove inner wall；The component type
Chamber is opened on die body.
9. steel plastic composite wound pipe band extruded mould according to claim 8, it is characterised in that the die body and die cap
On be equipped with positioned at band sizing chamber around cooling water channel, cooling water channel along band outbound course set；On die body and die cap
It is equipped with the water inlet and water return outlet communicated with respective cooling water channel.
10. steel plastic composite wound pipe band extruded mould according to claim 8, it is characterised in that under the die body
End is provided with base, and base offers two mounting holes being arranged side by side, and mounting hole is the strip width side along band sizing chamber
To setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710171212.XA CN106827448B (en) | 2017-03-21 | 2017-03-21 | Plastic-steel composite winding pipe belt material extrusion molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710171212.XA CN106827448B (en) | 2017-03-21 | 2017-03-21 | Plastic-steel composite winding pipe belt material extrusion molding die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106827448A true CN106827448A (en) | 2017-06-13 |
| CN106827448B CN106827448B (en) | 2023-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710171212.XA Active CN106827448B (en) | 2017-03-21 | 2017-03-21 | Plastic-steel composite winding pipe belt material extrusion molding die |
Country Status (1)
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| CN (1) | CN106827448B (en) |
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| CN111763337A (en) * | 2020-07-14 | 2020-10-13 | 会通新材料股份有限公司 | Reinforced polyolefin material and preparation method thereof |
| CN111791456A (en) * | 2020-07-14 | 2020-10-20 | 重庆会通科技有限公司 | Fiber-reinforced ABS material and preparation method thereof |
| CN111976118A (en) * | 2020-07-16 | 2020-11-24 | 会通新材料(上海)有限公司 | PA composite material and preparation method thereof |
| CN112045967A (en) * | 2020-07-14 | 2020-12-08 | 会通新材料股份有限公司 | PC material and preparation method thereof |
| CN112590161A (en) * | 2020-11-05 | 2021-04-02 | 华创天元实业发展有限责任公司 | Integrated forming device for multiple reinforced steel-plastic composite pipe strip |
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Address after: 611230 quality inspection Road 7, Chongzhou Economic Development Zone, Chengdu, Sichuan Applicant after: SICHUAN YEBO LIHENG GUIJIAO MINGWEI PIPE Co.,Ltd. Applicant after: Mou Changbao Address before: 611230 quality inspection Road 7, Chengdu Economic Development Zone, Sichuan Applicant before: SICHUAN YEBO LIHENG GUIJIAO MINGWEI PIPE Co.,Ltd. Applicant before: Mou Changbao |
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