CN108527817B - Method for enhancing strength of PP material cortex through differential crystallization - Google Patents
Method for enhancing strength of PP material cortex through differential crystallization Download PDFInfo
- Publication number
- CN108527817B CN108527817B CN201810329633.5A CN201810329633A CN108527817B CN 108527817 B CN108527817 B CN 108527817B CN 201810329633 A CN201810329633 A CN 201810329633A CN 108527817 B CN108527817 B CN 108527817B
- Authority
- CN
- China
- Prior art keywords
- crystallization
- strength
- cold water
- differential
- temperature
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 59
- 239000000463 material Substances 0.000 title claims abstract description 55
- 238000002425 crystallisation Methods 0.000 title claims abstract description 51
- 230000008025 crystallization Effects 0.000 title claims abstract description 49
- 230000002708 enhancing effect Effects 0.000 title claims abstract description 21
- 239000000155 melt Substances 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 56
- 230000003014 reinforcing effect Effects 0.000 claims description 44
- 238000009413 insulation Methods 0.000 claims description 25
- 238000004513 sizing Methods 0.000 claims description 9
- 230000001965 increasing effect Effects 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims 16
- -1 polypropylene Polymers 0.000 claims 1
- 229920001155 polypropylene Polymers 0.000 claims 1
- 238000005728 strengthening Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/918—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling
- B29C48/9185—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling in the direction of the stream of the 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
- 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
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Peptides Or Proteins (AREA)
- Saccharide Compounds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a method for enhancing the strength of a PP material skin layer through differential crystallization, which specifically comprises the following steps: the method for enhancing the strength of the skin layer of the PP material continuously extrudes the melt, multistage micro-division is arranged for crystallization, no bubble leakage is generated in the crystallization process, the surface of the PP after crystallization is flat, the temperature stress is uniformly cooled, no warping part is generated, the strength of the plate after crystallization is high, and the production process is well controlled.
Description
Technical Field
The invention relates to the technical field of new molding of high polymer materials, in particular to a method for enhancing the strength of a PP material skin layer through differential crystallization.
Background
The manner in which the polymeric material is formed depends on the characteristics of the material. The melt strength of PP is low, and the temperature range of the knot is small, so that only three-roll forming can be used in continuous extrusion production of PP plates, but a forming table cannot be used for forming.
But can not adopt the production process of a sizing table, the melt strength and the initial crystallization skinning strength of the PP material can not meet the requirements under the current process condition. Therefore, the process requirement of the sizing table is reduced, and the melt strength of the PP material is enhanced. A great deal of research is being conducted at home and abroad. At present, the melt strength of the material is enhanced mainly through chemical modification, but the cost is greatly increased, and the requirement cannot be completely met.
The technology is developed based on the fact that the melt strength of the PP material is weak, and compared with the existing processing technology, the strength of the crystallized PP material meets the technological requirements, and the brand new technology that the PP material can meet the technical conditions of molding requirements in the process from melt to crystallization is solved. Differentiating the conditions required from the melt to crystallization, wherein the accumulated conditions can meet the requirements of the common shaping table process. This is the result of the development of the technology.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a method for enhancing the strength of the skin layer of the PP material, which can be continuously extruded, has a flat plate surface, uniformly cools a plate, is not easy to warp and generates air bubbles to leak.
In order to realize the purpose of the invention, the adopted technical scheme is as follows: a method for enhancing the strength of a PP material skin layer through differential crystallization comprises the following steps that the front end of an enhancement device used in the method for enhancing the strength of the PP material skin layer is connected with a mold, the rear end of the enhancement device is connected with a sizing table, a contact part of the enhancement device and the mold is set as a mold opening, more than 10-grade cold water pipes are arranged in the enhancement device, a heat insulation groove is arranged between the cold water pipes, a melt flows in a flow channel in the enhancement device, the wall surface of the flow channel in the portion in the enhancement device is set as a flow channel surface, and the method for enhancing the strength of the PP material skin layer specifically comprises the following:
1) skinning: a reinforcing device is additionally arranged between the sizing table and the die, high-temperature melt enters the reinforcing device from a die orifice, and the reinforcing is started from the 1 st level, cold water is introduced into a cold water pipe to ensure that the temperature of a micro surface formed by a flow channel at the section under the action of a temperature insulation groove is lower than the crystallization temperature 165 ℃ of the PP material, so that the surface of the PP material melt is crystallized and skinned;
2) calculating: calculating the total differential crystallization skinning area of all differential crystallization skinning surfaces in the reinforcing device, designing and calculating the resistance generated by each differential reinforcing area of each grade 1 cold water pipe, each temperature insulation groove and each flow channel, so that the sum of the accumulated resistance of the resistance increased from grade 1 to more than 10 must be less than the sum of the strength of the PP material under the melt and the thrust of the extrusion pressure to the melt;
the differential crystallization crust surface is formed by two adjacent heat insulation grooves and a limited area which is formed on the surface of a flow channel of a cold water pipe between the two adjacent heat insulation grooves and is lower than the crystallization temperature of PP;
3) increasing the grade: the cold water pipe, the heat insulation groove and the flow channel in the reinforcing device are sequentially reinforced to be more than 10 grades from the 1 st grade, and the strength of the accumulated and reinforced cortex from the 1 st grade to the more than 10 grades can completely meet the requirement of a common sizing table.
Preferably, the temperature of cold water in the cold water pipe in the step 1 of the method for enhancing the strength of the skin layer of the PP material is set to be 10-80 ℃.
Preferably, the initial temperature of the reinforcing device in the step 1 of the method for reinforcing the skin strength of the PP material is set to be 180-300 ℃.
Preferably, two adjacent thermal insulation grooves are 3-15 mm apart from each other, wherein the width of the thermal insulation grooves is 2-15 mm, and the length is 10-3000 mm.
Preferably, the cold water pipes of each stage 1 in the reinforcing device are independent from each other and can control the flow.
Preferably, the distance between each 1-stage cold water pipe and the flow channel is the same, wherein the distance between the outer surface of the flow channel and the temperature insulation groove is set to be 3-15 mm.
Preferably, the reinforcing device used in the method for reinforcing the strength of the skin layer of the PP material is different in reinforcing mode when the machine is started and in production;
the enhancement mode during starting is that the differential crystallization skinning surface on the 10 th-level runner surface starts to crystallize and skinning, the circulation is enhanced to the 1 st level, the starting process is completed, no water exists in the cold water pipe during starting, and the water is gradually started to the 1 st level from the 10 th level;
the enhancement mode during production is that the differential crystallization skinning surface on the 1 st-stage runner surface starts to crystallize and skinne, the circulation is enhanced to the 10 th stage, and water is contained in the cold water pipe during production.
The invention has the beneficial effects that: the method for enhancing the strength of the skin layer of the PP material continuously extrudes a melt, and sets multiple stages for carrying out differentiation surface for crystallization and skinning, so that no gas leakage is generated in the crystallization process, the surface of the crystallized PP plate is flat and uniform in cooling, no warping part is generated, the strength of the crystallized plate is high, the crystallization temperature is easy to control, the cost is reduced, and the production requirement is met.
Drawings
FIG. 1 is a schematic structural diagram of an enhancement device for a differential crystallization method for enhancing the strength of a PP material skin layer.
FIG. 2 is a schematic diagram of a differential crystallization skinning structure of the differential crystallization method for crystallization enhancement of the strength of the skin layer of the PP material.
In the figure: 11. a reinforcement device; 12. a mold; 13. a shaping table; 14. a cold water pipe; 15. a thermal insulation groove; 16. a flow channel; 17. a die opening; 18. the flow passage surface.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, the technical solution adopted by the present invention is: a method for strengthening the strength of a PP material skin layer through crystallization by a differential method comprises the following steps that the front end of a strengthening device 11 used in the method for strengthening the strength of the PP material skin layer is connected with a mold 12, the rear end of the strengthening device is connected with a shaping table 13, a contact part of the strengthening device 11 and the mold 12 is provided with a mold opening 17, more than 10-grade cold water pipes 14 are arranged inside the strengthening device 11, a thermal insulation groove 15 is arranged between the cold water pipes 14, a melt flows in a flow channel 16 inside the strengthening device 11, and the wall surface of the flow channel 16 at the inner part of the strengthening device 11 is provided with a flow channel surface 18:
1) skinning: a reinforcing device 11 is additionally arranged between a sizing table 13 and a mould 12, high-temperature melt enters the reinforcing device 11 from a mould opening 17, and from the 1 st level of reinforcement, cold water is introduced into a cold water pipe 14 to ensure that the temperature of a differential surface formed by a flow channel 16 at the section under the action of a temperature insulating groove 15 is lower than the crystallization temperature 165 ℃ of the PP material, so that the surface of the PP material melt is crystallized and skinned;
2) calculating: calculating the total differential crystallization skinning area of all the differential crystallization skinning surfaces in the reinforcing device 11, designing and calculating the resistance generated by each differential reinforcing area of each grade 1 cold water pipe 14, the temperature insulation groove 15 and the flow channel 16, so that the sum of the accumulated resistance of the resistance from grade 1 to grade 10 is smaller than the sum of the strength of the PP material under the melt and the extrusion pressure to the melt thrust;
the differential crystallization crust surface is formed by two adjacent heat insulation grooves 15 and a limited area which is formed by the cold water pipe 14 between the two adjacent heat insulation grooves on the flow channel surface 18 and is lower than the crystallization temperature of PP;
3) increasing the grade: the cold water pipe 14, the thermal insulation groove 15 and the flow channel 16 in the reinforcing device 11 are sequentially reinforced from the 1 st level to more than 10 th level, and the strength of the accumulated and reinforced skin layer from the 1 st level to more than 10 th level can completely meet the requirement of the common sizing table 13.
Further, in the method for enhancing the strength of the skin layer of the PP material, the temperature of cold water in the cold water pipe 14 in the step 1 is set to be 10-80 ℃.
Further, the initial temperature of the reinforcing device 11 in the step 1 of the method for reinforcing the skin strength of the PP material is set to be 180-300 ℃.
Further, two adjacent thermal insulation grooves 15 are 3-15 mm apart from each other, wherein the width of thermal insulation groove 15 is 2-15 mm, and the length is set to be 10-3000 mm.
Further, the temperature of the reinforcing device 11 is raised to 200-300 ℃ by a heating device die temperature machine.
Further, the cold water pipes 14 of each stage 1 inside the enhancement device 11 are provided as mutually independent cold water pipes capable of controlling the flow rate.
Further, the distance between the cold water pipe 14 of each 1 stage and the flow channel 16 is the same, wherein the distance between the outer surface of the flow channel 16 and the temperature insulation groove 15 is set to be 3-15 mm.
Further, the reinforcing device 11 used in the method for reinforcing the strength of the skin layer of the PP material is different in reinforcing mode when the machine is started and in production;
the strengthening mode during starting is that the differential crystallization skinning surface on the 10 th-stage runner surface 18 starts to crystallize and skinne, the circulation is strengthened to the 1 st stage, the starting process is completed, no water exists in the cold water pipe 14 during starting, and the water is gradually started to the 1 st stage from the 10 th stage;
the enhancement mode during production is that the differential crystallization skinning surface on the 1 st-stage flow passage surface 18 starts to crystallize and skinne, the circulation is enhanced to the 10 th stage, and water is contained in the cold water pipe 14 during production.
Example 2
The present embodiment is different from embodiment 1 in that:
the method for enhancing the strength of the PP material skin layer comprises the following steps that 1, the temperature of cold water in a cold water pipe 14 is set to be 10 ℃;
the method for reinforcing the strength of the skin layer of the PP material sets the starting temperature of the reinforcing device 11 to be 180 ℃ in step 1.
Example 3
The present embodiment is different from embodiment 1 in that:
the method for enhancing the strength of the PP material skin layer comprises the following steps that in step 1, the temperature of cold water in a cold water pipe 14 is set to be 30 ℃;
the method for strengthening the skin layer of the reinforced PP material sets the starting temperature of a reinforcing device in step 1 to be 190 ℃.
Example 4
The present embodiment is different from embodiment 1 in that:
the method for enhancing the strength of the PP material skin layer comprises the following steps that 1, the temperature of cold water in a cold water pipe 14 is set to be 40 ℃;
the method for strengthening the skin of the PP material sets the starting temperature of the reinforcing device 11 to be 185 ℃ in step 1.
In the method for enhancing the strength of the skin layer of the PP material, the melt is continuously extruded, and the crystallization and skinning are carried out by setting a plurality of stages of differential surfaces, so that no leakage bubble is generated in the crystallization process, the surface of the crystallized PP plate is flat, the temperature stress is not generated after the crystallized PP plate is uniformly cooled, the warping part is not generated, the strength of the crystallized plate is high, the crystallization temperature range is large, the cost is reduced, and the production requirements are met.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A method for enhancing the strength of a PP material skin layer through differential crystallization is characterized by comprising the following steps: the front end of a reinforcing device (11) used in the method for reinforcing the strength of the PP material skin layer is connected with a mold (12), the rear end of the reinforcing device is connected with a shaping table (13), a contact part of the reinforcing device (11) and the mold (12) is set to be a mold opening (17), a cold water pipe (14) with the grade of more than 10 is arranged in the reinforcing device (11), a heat insulation groove (15) is arranged between the cold water pipes (14), a flow channel (16) of a melt in the reinforcing device (11) flows, the wall surface of the flow channel (16) in the inner part of the reinforcing device (11) is set to be a flow channel surface (18), and the method for reinforcing the strength of the PP material skin layer specifically comprises the following steps:
1) skinning: a reinforcing device (11) is additionally arranged between a sizing table (13) and a die (12), high-temperature melt enters the reinforcing device (11) from a die orifice (17), and from the 1 st stage of reinforcement, cold water is introduced into a cold water pipe (14) to ensure that the temperature of a differential surface formed by a flow channel (16) at the section under the action of a temperature insulation groove (15) is lower than the crystallization temperature 165 ℃ of the PP material, so that the surface of the PP material melt is crystallized and skinned;
2) calculating: calculating the total differential crystallization skinning area of all differential crystallization skinning surfaces in the reinforcing device (11), and designing and calculating the resistance generated by each differential reinforcing area of a cold water pipe (14), a temperature insulation groove (15) and a flow channel (16) of each grade 1, so that the sum of the accumulated resistance of the resistance increased from the grade 1 to more than 10 must be less than the sum of the strength of the PP material under the melt and the extrusion pressure to the melt thrust;
the differential crystallization crust surface is formed by two adjacent heat insulation grooves (15) and a limited area which is formed by a cold water pipe (14) between the two adjacent heat insulation grooves and is lower than the crystallization temperature of PP (polypropylene) on a flow passage surface (18);
3) increasing the grade: the cold water pipe (14), the heat insulation groove (15) and the flow channel (16) in the reinforcing device (11) are sequentially reinforced from the 1 st level to more than 10 levels, and the strength of the accumulated and reinforced skin layer from the 1 st level to more than 10 levels can completely meet the requirement of a common sizing table (13);
the reinforcing device (11) used in the method for reinforcing the strength of the PP material skin layer is different in reinforcing mode when the machine is started and in production;
the enhancement mode during starting is that the differential crystallization skinning surface on the 10 th-stage runner surface (18) starts to crystallize and skinne, the crystallization skinning is circularly enhanced to the 1 st stage, the starting process is completed, no water exists in the cold water pipe (14) during starting, and the water is gradually opened to the 1 st stage from the 10 th stage;
the enhancement mode during production is that the differential crystallization skinning surface on the 1 st-stage runner surface (18) starts to crystallize and skinne, the circulation is enhanced to the 10 th stage, and water is contained in the cold water pipe (14) during production.
2. The method for improving the skin strength of the PP material through crystallization by a differential method according to claim 1, wherein the method comprises the following steps: according to the method for enhancing the strength of the PP material skin layer, the temperature of cold water in the cold water pipe (14) in the step 1 is set to be 10-80 ℃.
3. The method for improving the skin strength of the PP material through crystallization by a differential method according to claim 1, wherein the method comprises the following steps: the method for enhancing the strength of the PP material skin layer sets the starting temperature of the enhancing device (11) to be 180-300 ℃ in the step 1.
4. The method for improving the skin strength of the PP material through crystallization by a differential method according to claim 1, wherein the method comprises the following steps: two adjacent separate between temperature groove (15) apart from 3 ~ 15mm, wherein, separate the width in temperature groove (15) and be 2 ~ 15mm, length sets up to 10 ~ 3000 mm.
5. The method for improving the skin strength of the PP material through crystallization by a differential method according to claim 1, wherein the method comprises the following steps: the temperature of the reinforcing device (11) is raised to 200-300 ℃ by a heating device die temperature machine.
6. The method for improving the skin strength of the PP material through crystallization by a differential method according to claim 1, wherein the method comprises the following steps: and each 1-stage cold water pipe (14) in the enhancement device (11) is set to be mutually independent and can control the flow.
7. The method of claim 6, wherein the method comprises the following steps: the distances between the cold water pipes (14) of each 1 stage and the flow channels (16) are the same, wherein the distance between the surface of the flow channels (16) and the temperature insulation grooves (15) is set to be 3-15 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810329633.5A CN108527817B (en) | 2018-04-13 | 2018-04-13 | Method for enhancing strength of PP material cortex through differential crystallization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810329633.5A CN108527817B (en) | 2018-04-13 | 2018-04-13 | Method for enhancing strength of PP material cortex through differential crystallization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108527817A CN108527817A (en) | 2018-09-14 |
| CN108527817B true CN108527817B (en) | 2021-01-15 |
Family
ID=63480109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810329633.5A Active CN108527817B (en) | 2018-04-13 | 2018-04-13 | Method for enhancing strength of PP material cortex through differential crystallization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108527817B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109483851B (en) * | 2018-12-28 | 2021-09-28 | 苏州聚复高分子材料有限公司 | Process for controlling polymer crystallinity in extrusion processing process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844215A (en) * | 2009-03-27 | 2010-09-29 | 宝山钢铁股份有限公司 | Dynamic secondary cooling control method for slab continuous casting based on double-cooling mode |
| CN102085719A (en) * | 2009-12-07 | 2011-06-08 | 重庆工商大学 | Device for molding special temperature-resistant, pressure-resistant and bidirectional self-strengthening plastic pipe for oil treatment |
| CN102085718A (en) * | 2009-12-07 | 2011-06-08 | 重庆工商大学 | Oil processing special-purpose temperature-resistant pressure-resistant circumferential self-reinforcing plastic pipe forming device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1143716C (en) * | 2001-02-28 | 2004-03-31 | 黄晸 | Differential crystallization method able to control gradient field and its equipment and application |
| US7758796B2 (en) * | 2006-07-21 | 2010-07-20 | Quadrant Epp Ag | Production of UHMWPE sheet materials |
| CN104340650B (en) * | 2013-08-05 | 2017-02-08 | 江苏泰尔新材料股份有限公司 | Liquid wax multistage cooling production line and wax tank cooling control method |
| CN104371213A (en) * | 2014-10-23 | 2015-02-25 | 周修君 | Bifacial-skinning rubber plastic flame-retardant thermal-insulation board and preparation method thereof |
| CN204840999U (en) * | 2015-06-11 | 2015-12-09 | 江阴市江中设备制造有限公司 | Horizontal multi stage mold |
-
2018
- 2018-04-13 CN CN201810329633.5A patent/CN108527817B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844215A (en) * | 2009-03-27 | 2010-09-29 | 宝山钢铁股份有限公司 | Dynamic secondary cooling control method for slab continuous casting based on double-cooling mode |
| CN102085719A (en) * | 2009-12-07 | 2011-06-08 | 重庆工商大学 | Device for molding special temperature-resistant, pressure-resistant and bidirectional self-strengthening plastic pipe for oil treatment |
| CN102085718A (en) * | 2009-12-07 | 2011-06-08 | 重庆工商大学 | Oil processing special-purpose temperature-resistant pressure-resistant circumferential self-reinforcing plastic pipe forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108527817A (en) | 2018-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108527817B (en) | Method for enhancing strength of PP material cortex through differential crystallization | |
| CN110355974A (en) | A kind of molding equipment and moulding process of the cable jacket being embedded in rigidity reinforced element | |
| CN108748943B (en) | Seamless crystallization skinning method for PP (polypropylene) plate | |
| CN207711354U (en) | A kind of PVC profile dry and wet mixing vacuum sizing device | |
| CN108819157B (en) | Demoulding method for continuous extrusion in-mold skinning PP foamed plate | |
| CN116277858A (en) | Near-isotropic fiber reinforced polyaryletherketone extrusion die and extrusion process | |
| CN106393635A (en) | Plate extruding die | |
| CN207564931U (en) | A kind of PVC profile cooling and shaping platform | |
| CN114368127A (en) | Ultrahigh molecular weight polyethylene extrusion molding die | |
| CN107263845A (en) | A kind of segmented glass thermoplastic pipes cooling device | |
| CN203725516U (en) | Warm and cold extrusion-forging tube-drawing equipment | |
| CN107214916A (en) | Avoid producing the mould of weld mark during injection | |
| CN104963597A (en) | Hollow glass partition strip | |
| CN110587965A (en) | Multistage temperature control machining forming device and machining method for PVC-O pipe | |
| CN205291462U (en) | Take amusement equipment injection mold of cooling pipe | |
| CN206953534U (en) | A kind of automotive window panel mould | |
| CN206718514U (en) | The former of arc plastic material | |
| CN110053233A (en) | A kind of medical molding equipment and its forming method for reinforcing conduit | |
| CN201317098Y (en) | Extrusion device of horniness plastic pipe | |
| CN111136930A (en) | Processing and production process of polytetrafluoroethylene suspension resin | |
| CN220219567U (en) | Injection mold capable of being molded rapidly | |
| CN110549581A (en) | Rapid cooling co-extrusion PE wood-plastic mold | |
| CN219748886U (en) | Shaping device and extrusion molding system | |
| CN204869570U (en) | Online biaxial stretching plastic extrusion mould | |
| CN217098832U (en) | Extrusion molding die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240219 Address after: 210000, Building A, Office Building 18-8327, Waisha Village Village, Baguazhou Street, Qixia District, Nanjing City, Jiangsu Province Patentee after: Nanjing Jiuxiang Material Technology Co.,Ltd. Country or region after: China Address before: 242200 Guangde Economic Development Zone, Xuancheng City, Anhui Province Patentee before: ANHUI HENGSEN NEW MATERIAL Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |