CN204894471U - Double screw extruder of foaming piece board - Google Patents
Double screw extruder of foaming piece board Download PDFInfo
- Publication number
- CN204894471U CN204894471U CN201520514264.9U CN201520514264U CN204894471U CN 204894471 U CN204894471 U CN 204894471U CN 201520514264 U CN201520514264 U CN 201520514264U CN 204894471 U CN204894471 U CN 204894471U
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- China
- Prior art keywords
- machine
- foaming
- screw extruder
- main
- main machine
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- Expired - Fee Related
Links
- 238000005187 foaming Methods 0.000 title claims abstract description 57
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 22
- 239000012141 concentrate Substances 0.000 claims 2
- 238000013022 venting Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 28
- 229920000139 polyethylene terephthalate Polymers 0.000 description 22
- 238000000034 method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 238000004100 electronic packaging Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229920008790 Amorphous Polyethylene terephthalate Polymers 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a double screw extruder of foaming piece board, including the main and auxiliaries that has barrel and screw rod, barrel of main and auxiliaries has the multisection, sets up feeding area respectively, the vacuum -exhaust district to and foaming masterbatch feeding area, wherein, feeding area sets up the front end at the main and auxiliaries of keeping away from the aircraft nose, and the vacuum -exhaust district sets up in feeding area's rear end, and the foaming masterbatch feeding area set up on the host computer, and is adjacent with the vacuum -exhaust district. Adopt the utility model discloses a water -disintegrable PET masterbatch of temperature sensing one -tenth product was with high costs during double screw extruder of foaming piece board had overcome prior art, and the processing equipment is complicated, the obscure defect of product effect, and the simplified operation step, reduction in production cost, it is energy -concerving and environment -protective when enhancing product performance.
Description
Technical Field
The invention relates to a foaming sheet extruder, in particular to a double-screw extruder for producing foaming APET and PETG sheet materials.
Background
PET is widely applied to various fields such as chemical fibers, films, beverage packaging, electronic packaging and the like as a high polymer material, and because PET has the advantages of good air tightness, heat resistance, good rigidity and the like, the market demand is increased year by year, and the material application is more and more extensive.
Twin screw extruders are common processing equipment used in extrusion processing. With the popularization of modified materials, the application and the process of the double-screw extruder become an essential important ring of modified materials, the core component of the double-screw extruder is a screw, the double-screw extruder plays roles in melting, plasticizing and dispersing in the extrusion process, and different screw combinations have great influence on the performance of products.
In recent years, the technology of foamed PET processing has been broken through and advanced by various major companies in various countries. However, the technology, process and equipment are complex, ordinary equipment is difficult to complete PET foaming, the worldwide PET foaming process and equipment problem is solved, the gap of the foaming PET technology in China is filled, the defects of high density, low strength, long forming time and the like of a foaming material in the process operation are overcome, and the problem is urgently solved.
SUMMERY OF THE UTILITY MODEL
There is technology, technology to foaming PET processing among the prior art to realize difficultly, equipment, operation are complicated, and expanded material density is high, and intensity is low, the long scheduling problem of shaping time, the utility model provides a double screw extruder of foaming sheet board.
The utility model provides a double screw extruder of foaming sheet board, including host computer and the auxiliary engine that has barrel and screw rod, the barrel of host computer and auxiliary engine has the multisection, sets up reinforced area respectively, vacuum exhaust district to and the reinforced area of foaming masterbatch, wherein, reinforced area sets up the front end at the host computer of keeping away from the aircraft nose and auxiliary engine, and vacuum exhaust district sets up the rear end at reinforced area, and the reinforced area of foaming masterbatch sets up on the host computer, and is adjacent with vacuum exhaust district.
Preferably, the feeding area of the double-screw extruder is a cylinder with an upper opening, is provided with an upper feeding opening and comprises a main machine feeding port and an auxiliary machine feeding port;
preferably, the vacuum exhaust area of the double-screw extruder is provided with a vacuum exhaust port, and the vacuum exhaust port is provided with a vacuum exhaust device which is a main machine vacuum exhaust port and an auxiliary machine vacuum exhaust port respectively;
preferably, the foaming master batch feeding area of the double-screw extruder is close to the head of the main machine and is provided with a foaming master batch feeding port;
preferably, the cylinder body of the main machine of the double-screw extruder is provided with 10 sections, the cylinder body of the auxiliary machine is provided with 9 sections, and the charging port of the main machine and the charging port of the auxiliary machine are respectively positioned in the 1 st section of the main machine and the 1 st section of the auxiliary machine; the 10 th section of the main machine is a machine head, and the 9 th section of the auxiliary machine is a machine head; the vacuum exhaust ports of the main machine are positioned on the 5 th section and the 7 th section of the main machine, and the vacuum exhaust ports of the auxiliary machine are positioned on the 5 th section and the 7 th section of the auxiliary machine; the foaming master batch charging hole is positioned at the section 9 of the main machine; sections 2, 3, 4, 6 and 8 of the main machine and the auxiliary machine are closed cylinders;
preferably, the foamed sheet of the twin screw extruder is a foamed PET sheet.
The beneficial effects of the utility model reside in that:
firstly, the double-screw extruder of the foaming sheet plate of the utility model takes the foaming master batch as the foaming mechanism, which is obviously different from the foaming by adopting carbon dioxide gas abroad, the density of the foaming PET material is reduced, generally 0.7-1.0 g/cm3 (the density of PET is 1.3g/cm3), and the raw material cost is greatly saved;
secondly, the foamed PET material product has the advantages of improved post-strength, improved shock resistance, improved temperature barrier property and the like, and is widely applied to the fields of electronic packaging and food packaging;
thirdly, the plastic suction heating time of the foamed PET material can be shortened to 1/2-1/3, and the product is easier to form;
fourthly, the utility model discloses a double screw extruder of foaming sheet board adopts crowded technique altogether, can make the ABA product with the material, and A \ A is the raw materials, and B is the recycled material, not only can produce the product that reaches sanitary standard, has also solved material cycle and has recycled the problem simultaneously.
Drawings
Various aspects of the invention will become more apparent after reading the detailed description of the invention with reference to the drawings. Wherein,
fig. 1 shows a schematic structural view of a twin-screw extruder for foamed sheets according to the present invention.
Detailed Description
In order to clearly understand the technical contents of the present invention, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Fig. 1 shows a schematic structural view of a twin-screw extruder for foamed sheets according to the present invention. Referring to fig. 1, the twin-screw extruder of the foam sheet comprises a main machine 90 and an auxiliary machine 80 having a cylinder 100 and screws (not shown), wherein the cylinder bodies of the main machine 90 and the auxiliary machine 80 have multiple sections, in this embodiment, 10 sections are provided on the cylinder body of the main machine 90, 9 sections are provided on the cylinder body of the auxiliary machine, the twin-screw extruder is responsible for melting, plasticizing and dispersing functions during extrusion, different screw combinations have a great influence on the performance of the product, and in other embodiments, other screw combinations can be selected according to different requirements of materials. The multi-section area of barrel body is provided with feeding zone, vacuum exhaust district to and foaming masterbatch feeding zone, and feeding zone is upper shed barrel, has reinforced upper shed, including host computer charge door 30 and auxiliary engine charge door 20. The vacuum exhaust area has vacuum exhaust ports configured with vacuum exhaust devices, respectively, a main machine vacuum exhaust port 50 and an auxiliary machine vacuum exhaust port 10. The foaming matrix feeding area is adjacent to the main frame head 70 and is provided with a foaming matrix feeding port 40. Referring to fig. 1, the charging zone is provided at the front ends of the master 90 and the slave 80, which are far from the master head 70 and the slave head 60, i.e., at section 1 of the master 90 and section 1 of the slave 80, respectively. The vacuum exhaust area is arranged at the rear end of the charging area, namely the main machine vacuum exhaust port 50 is positioned on the 5 th section and the 7 th section of the main machine, and the auxiliary machine vacuum exhaust port 10 is positioned on the 5 th section and the 7 th section of the auxiliary machine 80. The foaming master batch charging area is arranged on the main machine 90 and is adjacent to the vacuum exhaust area, namely the foaming master batch charging opening 40 is positioned at the 9 th section of the main machine 90, and meanwhile, the 2 nd, 3 rd, 4 th, 6 th and 8 th sections of the main machine 90 and the auxiliary machine 80 are closed cylinders.
The double-screw extruder of the foaming sheet plate is mainly used for processing and manufacturing the foaming PET sheet plate material, and particularly relates to the production of the foaming APET and PETG sheet plate material. The double-screw extruder of the foaming sheet plate selects a parallel double-screw vacuum exhaust co-extrusion process, and vacuum exhaust ports 50 and 10 are arranged at the positions, close to the front ends of the feeding ports 30 and 20 of the double-screw extruder and the foaming master batch feeding port 40, so that the conventional processing process that the double-screw extruder is not used for forced exhaust or natural exhaust and forced exhaust after use in master batch production is broken, the production stability of the PET master batch with thermosensitive hydrolysis is greatly improved, and the problems of viscosity reduction, material decomposition and the like are prevented. The traditional PET crystallization drying procedure is omitted, namely the step of drying the materials or mixing the materials at high speed for a long time before production and discharging water in a friction heat generating mode is omitted, more than 1/2 energy can be saved, the product quality is improved, and the production equipment is easier to operate and control.
The double-screw extruder of the foaming sheet plate is provided with a foaming master batch feed inlet 40 near a main machine head 70 and close to a main machine vacuum exhaust port 50, and adopts a co-extrusion technology to serve as a foaming space in the middle layer, so that the foaming of a product is not broken, the surface of the product is smoother, the foaming of bubbles in a cylinder body is more uniform, and the density of a foaming PET material is reduced to 0.7-1.0 g/cm3Is superior toTypical PET Density 1.3g/cm3Meanwhile, the foaming master batch is added for foaming under the condition that the moisture is removed by melting the materials of the main machine, so that a process system for crystallizing and drying the materials is saved, the production process is simplified, and the low-density foaming PET processing technology can be completed on simple equipment. The double-screw extruder of the foaming sheet plate can meet the requirements of different material properties, can also coat and utilize reclaimed materials, and can produce ABA products by using the materials, namely A \ A is used as a raw material and B is used as a reclaimed material, so that the products meeting the sanitary standard can be produced, and the problem of recycling the materials is solved.
The double-screw extruder for the foaming sheet plate foams the PET sheet plate by taking the foaming master batch as a foaming mechanism, is obviously different from the foaming by adopting carbon dioxide gas abroad, improves the strength and the shock resistance of a finished product of the foamed PET material, and is widely applied to the fields of electronic packaging and food packaging. Meanwhile, the plastic suction heating time of the foamed PET material can be shortened from 1/2 to 1/3, and the product is easier to form.
Therefore, adopt the utility model discloses a double screw extruder of foaming sheet board has overcome among the prior art heat-sensitive hydrolysis nature PET masterbatch and has become manufacturing cost height, and processing equipment is complicated, and the not obvious defect of product effect simplifies the operating procedure, and reduction in production cost is energy-concerving and environment-protective when improving product performance.
The foregoing description of the embodiments of the invention has been presented. However, those skilled in the art will appreciate that various modifications and substitutions can be made to the specific embodiments of the present invention without departing from the spirit and scope of the invention. Such modifications and substitutions fall within the scope of the invention as defined by the appended claims.
Claims (6)
1. The double-screw extruder of the foaming sheet plate is characterized by comprising a main machine and an auxiliary machine, wherein the main machine and the auxiliary machine are provided with a machine barrel and a screw, the machine barrel bodies of the main machine and the auxiliary machine are provided with a plurality of sections, and a charging area, a vacuum exhaust area and a foaming master batch charging area are respectively arranged on the main machine and the auxiliary machine, wherein the charging area is arranged at the front ends of the main machine and the auxiliary machine far away from a machine head, the vacuum exhaust area is arranged at the rear end of the charging area, and the foaming master batch charging area is arranged on the main machine and is adjacent to the vacuum exhaust area.
2. The twin screw extruder of claim 1, wherein the feed zone is an upper open barrel having a feed upper opening comprising a main machine feed port and an auxiliary machine feed port.
3. The twin screw extruder of claim 1, said vacuum venting zone having a vacuum vent configured with a vacuum evacuation device, respectively a main machine vacuum vent and an auxiliary machine vacuum vent.
4. The twin screw extruder of claim 1, wherein the foaming concentrate addition zone is adjacent to the main frame head and has a foaming concentrate addition port.
5. The twin screw extruder of any one of claims 1 to 4 wherein the barrel of the main machine has 10 sections and the barrel of the auxiliary machine has 9 sections, and the main machine feed port and the auxiliary machine feed port are located in section 1 of the main machine and section 1 of the auxiliary machine, respectively; the 10 th section of the main machine is a machine head, and the 9 th section of the auxiliary machine is a machine head; the main machine vacuum exhaust port is positioned on the 5 th section and the 7 th section of the main machine, and the auxiliary machine vacuum exhaust port is positioned on the 5 th section and the 7 th section of the auxiliary machine; the foaming master batch charging port is positioned at the section 9 of the main machine; the 2 nd, 3 rd, 4 th, 6 th and 8 th sections of the main machine and the auxiliary machine are closed cylinders.
6. The twin screw extruder of claim 1, wherein the foamed sheet panel is a foamed PET sheet panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520514264.9U CN204894471U (en) | 2015-07-15 | 2015-07-15 | Double screw extruder of foaming piece board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520514264.9U CN204894471U (en) | 2015-07-15 | 2015-07-15 | Double screw extruder of foaming piece board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204894471U true CN204894471U (en) | 2015-12-23 |
Family
ID=54916680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520514264.9U Expired - Fee Related CN204894471U (en) | 2015-07-15 | 2015-07-15 | Double screw extruder of foaming piece board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204894471U (en) |
-
2015
- 2015-07-15 CN CN201520514264.9U patent/CN204894471U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20210715 |