CN105881923A - PET (Polyethylene Terephthalate) sheet production technology - Google Patents
PET (Polyethylene Terephthalate) sheet production technology Download PDFInfo
- Publication number
- CN105881923A CN105881923A CN201610287845.2A CN201610287845A CN105881923A CN 105881923 A CN105881923 A CN 105881923A CN 201610287845 A CN201610287845 A CN 201610287845A CN 105881923 A CN105881923 A CN 105881923A
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- Prior art keywords
- district
- pet
- sheet
- production technology
- roll
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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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- 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
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
- B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
-
- 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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
-
- 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
Abstract
The invention discloses a PET (Polyethylene Terephthalate) sheet production technology. The PET sheet production technology comprises the main following steps of: step A, carrying out vacuum drying; step B, extruding by using an extruder; step C, calendering by using three rollers; step D, cooling by using guide rollers; step E, towing; step F, winding; step G, cutting into finished products; and step H, packaging. The PET sheet production technology is reasonable and concise, and is high in efficiency and high in speed; the technological process is greatly shortened; and raw materials are reasonably selected and relatively low in cost. PET sheets produced by using the production technology have the advantages of uniform thickness, uniform transparency and high strength.
Description
Technical field
The present invention relates to PET production technical field, the production technology of a kind of PET sheet.
Background technology
PET, since coming out, owing to fibre-forming performance is excellent, has been widely used in synthetic fiber industry, and in plastics industry
Aspect, is confined at first manufacture biaxially oriented film, is the most just widely used in hollow container, and today is with PET grain
Son is processed into various packing articles for the APET sheet material of raw material extrusion through thermoforming, with the barrier properties for gases that it is good,
Do not contain other and add auxiliary agent, pure health, there is good toughness and extensibility, the feature such as good recuperability, extensively
It is applied to all kinds of packagings and the advertising sectors such as electrical equipment, electronics, toy, food, medicine, is deeply favored by users, existing
The complex manufacturing of PET sheet, and the sheet thickness produced is uneven, intensity is low, elastic modelling quantity is low, product quality
Difference.
Summary of the invention
It is an object of the invention to provide the production technology of a kind of PET sheet, to solve proposition in above-mentioned background technology
Problem.
For achieving the above object, the present invention provides following technical scheme: the production technology of a kind of PET sheet, its feature exists
In: mainly comprise the steps that
A, vacuum drying: be dried in PET particle is put into vacuum drums drying machine, steam pressure is 0.6-0.8MPa,
Vacuum is 103-105kPa, and drying time is 12-14h；
B, extruder are extruded: enter in extruder, then with melt form by dried PET particle by weightless feeding machine
Extrusion plasticizing, then by excessive body and net-changing device, dosing pump be transported to head, be then passed through chilling roller and be cooled to sheet；
C, three-roll press-polishing: sheet step B obtained carries out horizontal and vertical drawing material through upper roller, central roll and lower roll；
D, cooling deflector roll: the sheet material obtained in step C being sent into cooling deflector roll and cools down, described cooling deflector roll is provided with 3-6
Root chill roll；
E, traction: the sheet material after cooling in step D is sent through carry-over pinch rolls；
F, rolling: the sheet material winding Cheng great Juan parent roll will sent in step E；
G, section；Sheet material after rolling in step F is cut into finished product by required specification requirement；
H, packaging: put in storage after finally finished product being packed.
Preferably, in described step A after vacuum drying treatment the water content control of PET particle at 0.006-0.009%.
Preferably, in described step B, extruder includes extrusion screw rod, excessive body, net-changing device and mould, described extrusion screw rod
Being divided into 9 humidity provinces from left to right, the temperature of described 9 humidity provinces arranges and is respectively as follows: a district: 260 DEG C-268 DEG C；2nd district: 260
℃-268℃ ；3rd district: 260 DEG C-268 DEG C；4th district: 260 DEG C-268 DEG C；5th district: 255 DEG C-262 DEG C；6th district: 255 DEG C-262
℃；7th district: 255 DEG C-262 DEG C；8th district: 255 DEG C-262 DEG C；9th district: 255 DEG C-262 DEG C；The temperature of described excessive body is set to 255
℃-262℃；The temperature of described net-changing device is set to 260 DEG C-268 DEG C；The temperature of described mould is set to 255 DEG C-260 DEG C.
Preferably, in described step F, the parent roll after rolling carries out Ageing Treatment, and the time of Ageing Treatment is 36h-
72h。
Compared with prior art, the invention has the beneficial effects as follows:
(1) present invention process rationally, succinctly, is greatly shortened technological process, and efficiency is high, and speed is fast, and material choice is reasonable, and cost is relatively
Low, the PET sheet that the present invention produces has the advantage that thickness is uniform, transparency is uniform, intensity is high.
(2) extrusion screw rod in extruder is provided with by the present invention multiple humidity province, and each humidity province is the most constant 260
About DEG C, it is possible to make the sheet thickness after extrusion more uniform.
(3) in the present invention after vacuum drying treatment the water content control of PET particle at 0.006-0.009%, it is possible to anti-
Only PET particle aoxidizes adding man-hour, improves product quality.
Detailed description of the invention
Below the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment
It is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained under not making creative work premise, broadly falls into the model of present invention protection
Enclose.
Embodiment one:
The present invention provides a kind of technical scheme: the production technology of a kind of PET sheet, mainly comprises the steps that
A, vacuum drying: be dried in PET particle is put into vacuum drums drying machine, steam pressure is 0.6MPa, vacuum
Degree is 103kPa, and drying time is 12h；
B, extruder are extruded: enter in extruder, then with melt form by dried PET particle by weightless feeding machine
Extrusion plasticizing, then by excessive body and net-changing device, dosing pump be transported to head, be then passed through chilling roller and be cooled to sheet；
C, three-roll press-polishing: sheet step B obtained carries out horizontal and vertical drawing material through upper roller, central roll and lower roll；
D, cooling deflector roll: the sheet material obtained in step C being sent into cooling deflector roll and cools down, cooling deflector roll is provided with 3 coolings
Roller；
E, traction: the sheet material after cooling in step D is sent through carry-over pinch rolls；
F, rolling: the sheet material winding Cheng great Juan parent roll will sent in step E；
G, section；Sheet material after rolling in step F is cut into finished product by required specification requirement；
H, packaging: put in storage after finally finished product being packed.
In the present embodiment, in step A after vacuum drying treatment the water content control of PET particle 0.006%, it is possible to anti-
Only PET particle aoxidizes adding man-hour, improves product quality.
In the present embodiment, in step B, extruder includes extrusion screw rod, excessive body, net-changing device and mould, and extrusion screw rod is from a left side
Being 9 humidity provinces to parting on the right side, the temperature of 9 humidity provinces arranges and is respectively as follows: a district: 260 DEG C；2nd district: 260 DEG C；3rd district: 260
℃；4th district: 260 DEG C；5th district: 255 DEG C；6th district: 255 DEG C；7th district: 255 DEG C；8th district: 255 DEG C；9th district: 255 DEG C；Excessive body
Temperature is set to 255 DEG C；The temperature of net-changing device is set to 260 DEG C；The temperature of mould is set to 255 DEG C, uses this temperature, it is possible to make extrusion
After sheet thickness more uniform.
It addition, in the present embodiment, in step F, the parent roll after rolling carries out Ageing Treatment, and the time of Ageing Treatment is
36h.Sheet material after Wetted constructures, it is possible to eliminate the internal stress of sheet material, improves the quality of PET sheet.
Embodiment two:
The present invention provides a kind of technical scheme: the production technology of a kind of PET sheet, mainly comprises the steps that
A, vacuum drying: be dried in PET particle is put into vacuum drums drying machine, steam pressure is 0.8MPa, vacuum
Degree is 105kPa, and drying time is 14h；
B, extruder are extruded: enter in extruder, then with melt form by dried PET particle by weightless feeding machine
Extrusion plasticizing, then by excessive body and net-changing device, dosing pump be transported to head, be then passed through chilling roller and be cooled to sheet；
C, three-roll press-polishing: sheet step B obtained carries out horizontal and vertical drawing material through upper roller, central roll and lower roll；
D, cooling deflector roll: the sheet material obtained in step C being sent into cooling deflector roll and cools down, cooling deflector roll is provided with 6 coolings
Roller；
E, traction: the sheet material after cooling in step D is sent through carry-over pinch rolls；
F, rolling: the sheet material winding Cheng great Juan parent roll will sent in step E；
G, section；Sheet material after rolling in step F is cut into finished product by required specification requirement；
H, packaging: put in storage after finally finished product being packed.
In the present embodiment, in step A after vacuum drying treatment the water content control of PET particle 0.009%, it is possible to anti-
Only PET particle aoxidizes adding man-hour, improves product quality.
In the present embodiment, in step B, extruder includes extrusion screw rod, excessive body, net-changing device and mould, and extrusion screw rod is from a left side
Being 9 humidity provinces to parting on the right side, the temperature of 9 humidity provinces arranges and is respectively as follows: a district: 268 DEG C；2nd district: 268 DEG C；3rd district: 268
℃；4th district: 268 DEG C；5th district: 262 DEG C；6th district: 262 DEG C；7th district: 262 DEG C；8th district: 262 DEG C；9th district: 262 DEG C；Excessive body
Temperature is set to 262 DEG C；The temperature of net-changing device is set to 268 DEG C；The temperature of mould is set to 260 DEG C, uses this temperature, it is possible to make extrusion
After sheet thickness more uniform.
It addition, in the present embodiment, in step F, the parent roll after rolling carries out Ageing Treatment, and the time of Ageing Treatment is
72h.Sheet material after Wetted constructures, it is possible to eliminate the internal stress of sheet material, improves the quality of PET sheet.
Embodiment three:
The present invention provides a kind of technical scheme: the production technology of a kind of PET sheet, mainly comprises the steps that
A, vacuum drying: be dried in PET particle is put into vacuum drums drying machine, steam pressure is 0.7MPa, vacuum
Degree is 104kPa, and drying time is 13h；
B, extruder are extruded: enter in extruder, then with melt form by dried PET particle by weightless feeding machine
Extrusion plasticizing, then by excessive body and net-changing device, dosing pump be transported to head, be then passed through chilling roller and be cooled to sheet；
C, three-roll press-polishing: sheet step B obtained carries out horizontal and vertical drawing material through upper roller, central roll and lower roll；
D, cooling deflector roll: the sheet material obtained in step C being sent into cooling deflector roll and cools down, cooling deflector roll is provided with 4 coolings
Roller；
E, traction: the sheet material after cooling in step D is sent through carry-over pinch rolls；
F, rolling: the sheet material winding Cheng great Juan parent roll will sent in step E；
G, section；Sheet material after rolling in step F is cut into finished product by required specification requirement；
H, packaging: put in storage after finally finished product being packed.
In the present embodiment, in step A after vacuum drying treatment the water content control of PET particle 0.007%, it is possible to anti-
Only PET particle aoxidizes adding man-hour, improves product quality.
In the present embodiment, in step B, extruder includes extrusion screw rod, excessive body, net-changing device and mould, and extrusion screw rod is from a left side
Being 9 humidity provinces to parting on the right side, the temperature of 9 humidity provinces arranges and is respectively as follows: a district: 265 DEG C；2nd district: 265 DEG C；3rd district: 265
℃；4th district: 265 DEG C；5th district: 260 DEG C；6th district: 260 DEG C；7th district: 260 DEG C；8th district: 260 DEG C；9th district: 260 DEG C；Excessively body
Temperature be set to 260 DEG C；The temperature of net-changing device is set to 265 DEG C；The temperature of mould is set to 260 DEG C, uses this temperature, it is possible to make to squeeze
Sheet thickness after going out is more uniform.
In the present embodiment, in step F, the parent roll after rolling carries out Ageing Treatment, and the time of Ageing Treatment is 48h.Warp
Sheet material after Wetted constructures, it is possible to eliminate the internal stress of sheet material, improves the quality of PET sheet.
Experimental example:
After the production technology of three above embodiment processes, take out sample respectively, testing result such as following table:
| Outward appearance | Intensity (MPa) | Elastic modelling quantity (MPa) | Transparency | Thickness (mm) | |
| Embodiment one | Smooth bright and clean, color and luster is uneven | 152 | 3710 | Well | 1.3 |
| Embodiment two | Smooth bright and clean, color and luster is uneven | 175 | 4020 | Well | 1.5 |
| Embodiment three | Smooth bright and clean, uniform color | 205 | 4650 | Well | 1.8 |
Can draw according to above table data, the PET sheet that embodiment 3 is produced has free from admixture, surfacing light
Advantage clean, that uniform color, hot strength are big, elastic modelling quantity is high, printing opacity is good, thickness is big, is now more beneficial for PET sheet
Produce.
Present invention process rationally, succinctly, is greatly shortened technological process, and efficiency is high, and speed is fast, and material choice is reasonable, cost
Relatively low, the PET sheet that the present invention produces has the advantage that thickness is uniform, transparency is uniform, intensity is high.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and these embodiments can be carried out multiple change without departing from the principles and spirit of the present invention, revise, replace
And modification, the scope of the present invention be defined by the appended.
Claims (4)
1. the production technology of a PET sheet, it is characterised in that: mainly comprise the steps that
A, vacuum drying: be dried in PET particle is put into vacuum drums drying machine, steam pressure is 0.6-0.8MPa,
Vacuum is 103-105kPa, and drying time is 12-14h；
B, extruder are extruded: enter in extruder, then with melt form by dried PET particle by weightless feeding machine
Extrusion plasticizing, then by excessive body and net-changing device, dosing pump be transported to head, be then passed through chilling roller and be cooled to sheet；
C, three-roll press-polishing: sheet step B obtained carries out horizontal and vertical drawing material through upper roller, central roll and lower roll；
D, cooling deflector roll: the sheet material obtained in step C being sent into cooling deflector roll and cools down, described cooling deflector roll is provided with 3-6
Root chill roll；
E, traction: the sheet material after cooling in step D is sent through carry-over pinch rolls；
F, rolling: the sheet material winding Cheng great Juan parent roll will sent in step E；
G, section；Sheet material after rolling in step F is cut into finished product by required specification requirement；
H, packaging: put in storage after finally finished product being packed.
The production technology of a kind of PET sheet the most according to claim 1, it is characterised in that: described step A is vacuum dried
After process, the water content control of PET particle is at 0.006-0.009%.
The production technology of a kind of PET sheet the most according to claim 1, it is characterised in that: extruder bag in described step B
Including extrusion screw rod, excessive body, net-changing device and mould, described extrusion screw rod is divided into 9 humidity provinces, described 9 temperature from left to right
The temperature in district arranges and is respectively as follows: a district: 260 DEG C-268 DEG C；2nd district: 260 DEG C-268 DEG C；3rd district: 260 DEG C-268 DEG C；4th district:
260℃-268℃；5th district: 255 DEG C-262 DEG C；6th district: 255 DEG C-262 DEG C；7th district: 255 DEG C-262 DEG C；8th district: 255 DEG C-262
℃；9th district: 255 DEG C-262 DEG C；The temperature of described excessive body is set to 255 DEG C-262 DEG C；The temperature of described net-changing device is set to 260
℃-268℃；The temperature of described mould is set to 255 DEG C-260 DEG C.
The production technology of a kind of PET sheet the most according to claim 1, it is characterised in that: in described step F after rolling
Parent roll carries out Ageing Treatment, and the time of Ageing Treatment is 36h-72h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610287845.2A CN105881923A (en) | 2016-05-04 | 2016-05-04 | PET (Polyethylene Terephthalate) sheet production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610287845.2A CN105881923A (en) | 2016-05-04 | 2016-05-04 | PET (Polyethylene Terephthalate) sheet production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105881923A true CN105881923A (en) | 2016-08-24 |
Family
ID=56703181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610287845.2A Pending CN105881923A (en) | 2016-05-04 | 2016-05-04 | PET (Polyethylene Terephthalate) sheet production technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105881923A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107932938A (en) * | 2016-10-12 | 2018-04-20 | 东莞市杰伟机械制造有限公司 | The special sheet material extruding production line of PET packagings for foodstuff |
| CN107984769A (en) * | 2017-12-28 | 2018-05-04 | 苏州工业园区良才新材料有限公司 | A kind of sheet（Material thickness is more than 2.0 millimeters）Plastic extrusion plastic uptake all-in-one machine |
| CN108656591A (en) * | 2018-04-26 | 2018-10-16 | 周文雄 | A kind of technique that automotive window or hurricane globe are prepared as raw material using makrolon |
| CN113071121A (en) * | 2021-04-02 | 2021-07-06 | 韶关市盛益塑胶制品有限公司 | PET sheet production process |
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| US20120018917A1 (en) * | 2009-01-23 | 2012-01-26 | Sunallomer Ltd. | Process and apparatus for producing crystalline resin film or sheet |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107932938A (en) * | 2016-10-12 | 2018-04-20 | 东莞市杰伟机械制造有限公司 | The special sheet material extruding production line of PET packagings for foodstuff |
| CN107984769A (en) * | 2017-12-28 | 2018-05-04 | 苏州工业园区良才新材料有限公司 | A kind of sheet（Material thickness is more than 2.0 millimeters）Plastic extrusion plastic uptake all-in-one machine |
| CN108656591A (en) * | 2018-04-26 | 2018-10-16 | 周文雄 | A kind of technique that automotive window or hurricane globe are prepared as raw material using makrolon |
| CN113071121A (en) * | 2021-04-02 | 2021-07-06 | 韶关市盛益塑胶制品有限公司 | PET sheet production process |
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Application publication date: 20160824 |
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