CN103407055B - A kind of preparation method of large-scale polyethylene tube - Google Patents
A kind of preparation method of large-scale polyethylene tube Download PDFInfo
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- CN103407055B CN103407055B CN201310353639.3A CN201310353639A CN103407055B CN 103407055 B CN103407055 B CN 103407055B CN 201310353639 A CN201310353639 A CN 201310353639A CN 103407055 B CN103407055 B CN 103407055B
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Abstract
The present invention relates to a kind of pipe fitting, particularly relate to a kind of preparation method of large-scale polyethylene tube.Carry out according to the following steps: raw material stoving → material loading → matched moulds → injection moulding → shaping pressurize → cooling → storing → die sinking → fully cooling → inspection → assembling and packaging.Preparation method's improving product class of large-scale polyethylene tube, improves product usefulness.
Description
Technical field
The present invention relates to a kind of pipe fitting, particularly relate to a kind of preparation method of large-scale polyethylene tube.
Background technology
Pipe fitting in prior art, the quality of production is not up to standard, and in the process used, result of use is undesirable.
Chinese patent 201210370850.1, discloses a kind of modification regeneration polyvinyl piping materials, pipe fitting PP Pipe Compound and preparation method thereof, solves the problem that new polyethylene is more, production cost is higher of existing modified polythene tube, the consumption of pipe fitting PP Pipe Compound.The present invention forms primarily of the component of following percentage by weight: 5% ~ 55% polyethylene, 10% ~ 70% recycle polyethylene, 5% ~ 20% flexibilizer, 5% ~ 40% talcum powder, 5% ~ 40% calcium carbonate, 1% ~ 5% anti-impact modifier, 0.1% ~ 2% cumyl peroxide, 0.4% ~ 2% antioxidant 1010,0.5% ~ 3% silane coupler, 0.5% ~ 3% Tissuemat E, 0.5% ~ 3% calcium stearate, 0.4% ~ 4% pigment.This complexity of preparing burden, and there is polytropy in process of production, easily make the Quality Down of product, this batching is only suitable for the pipe fitting producing pipe with small pipe diameter simultaneously.
Summary of the invention
The present invention mainly solves the deficiencies in the prior art, and provide a kind of preparation method advanced, the quality of production is up to standard, in the preparation method of the outstanding a kind of large-scale polyethylene tube of result of use.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
A preparation method for large-scale polyethylene tube, carries out according to the following steps:
(1), raw material stoving:
Pipe fitting raw material is: the polyethylene of 98% and the color masterbatch of 2%; Raw material is put into dehumidifier and carry out surperficial moisture content oven dry, the temperature of oven dry is 85 degree ~ 105 degree, and the time of oven dry is 1.5 ~ 2.5 hours, the water content≤1PPM of raw material;
(2), material loading:
The raw material of step (1) being dried gained loads in injection machine material storage tube, and raw material is again after the heated-air drying that temperature is 90 degree, and raw material enters in barrel, and raw material is successively by nine warm areas in barrel:
One district: the temperature in a district is 195 degree ~ 205 degree, and the time that raw material passes through is 200 seconds;
2nd district: the temperature in 2nd district is 195 degree ~ 205 degree, and the time that raw material passes through is 200 seconds;
3rd district: the temperature in 3rd district is 190 degree ~ 200 degree, and the time that raw material passes through is 200 seconds;
4th district: the temperature in 4th district is 190 degree ~ 200 degree, and the time that raw material passes through is 200 seconds;
5th district: the temperature in 5th district is 185 degree ~ 195 degree, and the time that raw material passes through is 200 seconds;
6th district: the temperature in 6th district is 185 degree ~ 195 degree, and the time that raw material passes through is 200 seconds;
7th district: the temperature in 7th district is 180 degree ~ 190 degree, and the time that raw material passes through is 200 seconds;
8th district: the temperature in 8th district is 170 degree ~ 180 degree, and the time that raw material passes through is 200 seconds;
9th district: the temperature in 9th district is 160 degree ~ 170 degree, and the time that raw material passes through is 200 seconds;
(3), matched moulds:
Carry out closing up mould;
(4), injection moulding:
Be injected in mold cavity by the raw material of fusing, pressure during injection moulding is 75 ~ 85MPa; The flow of injection is 13 ~ 18 liters/second; The position of injection is 1200 ~ 1800mm, and the position of injection refers to the position of screw rod in barrel, and the time of injection is 120 ~ 250s;
Pressure during storing is 70 ~ 110MPa, and flow during storing is 5 ~ 8 liters/second, and position during storing is 1245 ~ 1800mm; The storing time is 900 ~ 2500S;
(5), shaping pressurize:
Pressure during pressurize is 25 ~ 50MPa, and flow during pressurize is 5 ~ 8 liters/second, and the time of pressurize is 200 ~ 500s;
(6), cool:
The time of mold cools down is 1195 ~ 2005s, and the thermostat temperature of cooling water tank is: 20 DEG C; The cool time of cooling water tank is 1200 ~ 2100S;
(7), storing:
Storing will successively through three storing sections,
The stock pressure of one storing section is 90 ~ 110 MPa; The storing time is 40 ~ 60S;
The stock pressure of two storing sections is 70 ~ 90 MPa, and the storing time is 30 ~ 40S; The position that storing stops is 300 ~ 400mm;
The stock pressure of three storing sections is 90 ~ 110 MPa, and the storing time is 40 ~ 60S; The position that storing stops is 1650 ~ 1850mm;
Penetrating the pressure moved back is 110 ~ 130 MPa; Penetrating the time of moving back is 90 ~ 110S; Penetrating the position of moving back termination is 1650 ~ 1850mm;
(8), die sinking:
Penetrate after having moved back, injection machine opens mould automatically, and operative employee takes out goods;
(9), fully cool:
Goods fully cool in cooling water tank under supercooled water condition, and the time of fully cooling is 1200 ~ 2100S;
(10), check, assemble and packaging:
Inspector detects the outward appearance of goods, the index of size, detect qualified after goods, assemble it, after having assembled, packaging personnel pack finished product and put in storage.
Therefore, the preparation method of a kind of large-scale polyethylene tube of the present invention, improving product class, improves product usefulness.
Detailed description of the invention
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment 1: a kind of preparation method of large-scale polyethylene tube, carry out according to the following steps:
(1), raw material stoving:
Pipe fitting raw material is: the polyethylene of 98% and the color masterbatch of 2%; Raw material is put into dehumidifier and carry out surperficial moisture content oven dry, the temperature of oven dry is 85 degree, and the time of oven dry is 1.5 hours, the water content≤1PPM of raw material;
(2), material loading:
The raw material of step (1) being dried gained loads in injection machine material storage tube, and raw material is again after the heated-air drying that temperature is 90 degree, and raw material enters in barrel, and raw material is successively by nine warm areas in barrel:
One district: the temperature in a district is 195 degree, and the time that raw material passes through is 200 seconds;
2nd district: the temperature in 2nd district is 195 degree, and the time that raw material passes through is 200 seconds;
3rd district: the temperature in 3rd district is 190 degree, and the time that raw material passes through is 200 seconds;
4th district: the temperature in 4th district is 190 degree, and the time that raw material passes through is 200 seconds;
5th district: the temperature in 5th district is 185 degree, and the time that raw material passes through is 200 seconds;
6th district: the temperature in 6th district is 185 degree, and the time that raw material passes through is 200 seconds;
7th district: the temperature in 7th district is 180 degree, and the time that raw material passes through is 200 seconds;
8th district: the temperature in 8th district is 170 degree, and the time that raw material passes through is 200 seconds;
9th district: the temperature in 9th district is 160 degree, and the time that raw material passes through is 200 seconds;
(3), matched moulds:
Carry out closing up mould;
(4), injection moulding:
Be injected in mold cavity by the raw material of fusing, pressure during injection moulding is 75MPa; The flow of injection is 13 liters/second; The position of injection is 1200mm, and the position of injection refers to the position of screw rod in barrel, and the time of injection is 120s;
Pressure during storing is 70MPa, and flow during storing is 5 liters/second, and position during storing is 1245mm; The storing time is 900S;
(5), shaping pressurize:
Pressure during pressurize is 25MPa, and flow during pressurize is 5 liters/second, and the time of pressurize is 200s;
(6), cool:
The time of mold cools down is 1195s, and the thermostat temperature of cooling water tank is: 20 DEG C; The cool time of cooling water tank is 1200S;
(7), storing:
Storing will successively through three storing sections,
The stock pressure of one storing section is 90 MPa; The storing time is 40S;
The stock pressure of two storing sections is 70 MPa, and the storing time is 30S; The position that storing stops is 300mm;
The stock pressure of three storing sections is 90 MPa, and the storing time is 40S; The position that storing stops is 1650mm;
Penetrating the pressure moved back is 110 MPa; Penetrating the time of moving back is 90S; Penetrating the position of moving back termination is 1650mm;
(8), die sinking:
Penetrate after having moved back, injection machine opens mould automatically, and operative employee takes out goods;
(9), fully cool:
Goods fully cool in cooling water tank under supercooled water condition, and the time of fully cooling is 1200S;
(10), check, assemble and packaging:
Inspector detects the outward appearance of goods, the index of size, detect qualified after goods, assemble it, after having assembled, packaging personnel pack finished product and put in storage.
Embodiment 2: a kind of preparation method of large-scale polyethylene tube, carry out according to the following steps:
(1), raw material stoving:
Pipe fitting raw material is: the polyethylene of 98% and the color masterbatch of 2%; Raw material is put into dehumidifier and carry out surperficial moisture content oven dry, the temperature of oven dry is 100 degree, and the time of oven dry is 2.0 hours, the water content≤1PPM of raw material;
(2), material loading:
The raw material of step (1) being dried gained loads in injection machine material storage tube, and raw material is again after the heated-air drying that temperature is 90 degree, and raw material enters in barrel, and raw material is successively by nine warm areas in barrel:
One district: the temperature in a district is 200 degree, and the time that raw material passes through is 200 seconds;
2nd district: the temperature in 2nd district is 200 degree, and the time that raw material passes through is 200 seconds;
3rd district: the temperature in 3rd district is 195 degree, and the time that raw material passes through is 200 seconds;
4th district: the temperature in 4th district is 195 degree, and the time that raw material passes through is 200 seconds;
5th district: the temperature in 5th district is 190 degree, and the time that raw material passes through is 200 seconds;
6th district: the temperature in 6th district is 190 degree, and the time that raw material passes through is 200 seconds;
7th district: the temperature in 7th district is 185 degree, and the time that raw material passes through is 200 seconds;
8th district: the temperature in 8th district is 175 degree, and the time that raw material passes through is 200 seconds;
9th district: the temperature in 9th district is 165 degree, and the time that raw material passes through is 200 seconds;
(3), matched moulds:
Carry out closing up mould;
(4), injection moulding:
Be injected in mold cavity by the raw material of fusing, pressure during injection moulding is 80MPa; The flow of injection is 16 liters/second; The position of injection is 1500mm, and the position of injection refers to the position of screw rod in barrel, and the time of injection is 200s;
Pressure during storing is 90MPa, and flow during storing is 7 liters/second, and position during storing is 1500mm; The storing time is 1500S;
(5), shaping pressurize:
Pressure during pressurize is 40MPa, and flow during pressurize is 7 liters/second, and the time of pressurize is 300s;
(6), cool:
The time of mold cools down is 1500s, and the thermostat temperature of cooling water tank is: 20 DEG C; The cool time of cooling water tank is 1500S;
(7), storing:
Storing will successively through three storing sections,
The stock pressure of one storing section is 100 MPa; The storing time is 50S;
The stock pressure of two storing sections is 80 MPa, and the storing time is 35S; The position that storing stops is 350mm;
The stock pressure of three storing sections is 100MPa, and the storing time is 50S; The position that storing stops is 1700mm;
Penetrating the pressure moved back is 120 MPa; Penetrating the time of moving back is 100S; Penetrating the position of moving back termination is 1700mm;
(8), die sinking:
Penetrate after having moved back, injection machine opens mould automatically, and operative employee takes out goods;
(9), fully cool:
Goods fully cool in cooling water tank under supercooled water condition, and the time of fully cooling is 1500S;
(10), check, assemble and packaging:
Inspector detects the outward appearance of goods, the index of size, detect qualified after goods, assemble it, after having assembled, packaging personnel pack finished product and put in storage.
Embodiment 3: a kind of preparation method of large-scale polyethylene tube, carry out according to the following steps:
(1), raw material stoving:
Pipe fitting raw material is: the polyethylene of 98% and the color masterbatch of 2%; Raw material is put into dehumidifier and carry out surperficial moisture content oven dry, the temperature of oven dry is 105 degree, and the time of oven dry is 2.5 hours, the water content≤1PPM of raw material;
(2), material loading:
The raw material of step (1) being dried gained loads in injection machine material storage tube, and raw material is again after the heated-air drying that temperature is 90 degree, and raw material enters in barrel, and raw material is successively by nine warm areas in barrel:
One district: the temperature in a district is 205 degree, and the time that raw material passes through is 200 seconds;
2nd district: the temperature in 2nd district is 205 degree, and the time that raw material passes through is 200 seconds;
3rd district: the temperature in 3rd district is 200 degree, and the time that raw material passes through is 200 seconds;
4th district: the temperature in 4th district is 200 degree, and the time that raw material passes through is 200 seconds;
5th district: the temperature in 5th district is 195 degree, and the time that raw material passes through is 200 seconds;
6th district: the temperature in 6th district is 195 degree, and the time that raw material passes through is 200 seconds;
7th district: the temperature in 7th district is 190 degree, and the time that raw material passes through is 200 seconds;
8th district: the temperature in 8th district is 180 degree, and the time that raw material passes through is 200 seconds;
9th district: the temperature in 9th district is 170 degree, and the time that raw material passes through is 200 seconds;
(3), matched moulds:
Carry out closing up mould;
(4), injection moulding:
Be injected in mold cavity by the raw material of fusing, pressure during injection moulding is 85MPa; The flow of injection is 18 liters/second; The position of injection is 1800mm, and the position of injection refers to the position of screw rod in barrel, and the time of injection is 250s;
Pressure during storing is 110MPa, and flow during storing is 8 liters/second, and position during storing is 1800mm; The storing time is 2500S;
(5), shaping pressurize:
Pressure during pressurize is 50MPa, and flow during pressurize is 8 liters/second, and the time of pressurize is 500s;
(6), cool:
The time of mold cools down is 2005s, and the thermostat temperature of cooling water tank is: 20 DEG C; The cool time of cooling water tank is 2100S;
(7), storing:
Storing will successively through three storing sections,
The stock pressure of one storing section is 110 MPa; The storing time is 60S;
The stock pressure of two storing sections is 90 MPa, and the storing time is 40S; The position that storing stops is 400mm;
The stock pressure of three storing sections is 110 MPa, and the storing time is 60S; The position that storing stops is 1850mm;
Penetrating the pressure moved back is 130 MPa; Penetrating the time of moving back is 110S; Penetrating the position of moving back termination is 1850mm;
(8), die sinking:
Penetrate after having moved back, injection machine opens mould automatically, and operative employee takes out goods;
(9), fully cool:
Goods fully cool in cooling water tank under supercooled water condition, and the time of fully cooling is 2100S;
(10), check, assemble and packaging:
Inspector detects the outward appearance of goods, the index of size, detect qualified after goods, assemble it, after having assembled, packaging personnel pack finished product and put in storage.
Claims (1)
1. a preparation method for large-scale polyethylene tube, is characterized in that carrying out according to the following steps:
(1), raw material stoving:
Pipe fitting raw material is: the polyethylene of 98% and the color masterbatch of 2%; Raw material is put into dehumidifier and carry out surperficial moisture content oven dry, the temperature of oven dry is 85 degree ~ 105 degree, and the time of oven dry is 1.5 ~ 2.5 hours, the water content≤1PPM of raw material;
(2), material loading:
The raw material of step (1) being dried gained loads in injection machine material storage tube, and raw material is again after the heated-air drying that temperature is 90 degree, and raw material enters in barrel, and raw material is successively by nine warm areas in barrel:
One district: the temperature in a district is 195 degree ~ 205 degree, and the time that raw material passes through is 200 seconds;
2nd district: the temperature in 2nd district is 195 degree ~ 205 degree, and the time that raw material passes through is 200 seconds;
3rd district: the temperature in 3rd district is 190 degree ~ 200 degree, and the time that raw material passes through is 200 seconds;
4th district: the temperature in 4th district is 190 degree ~ 200 degree, and the time that raw material passes through is 200 seconds;
5th district: the temperature in 5th district is 185 degree ~ 195 degree, and the time that raw material passes through is 200 seconds;
6th district: the temperature in 6th district is 185 degree ~ 195 degree, and the time that raw material passes through is 200 seconds;
7th district: the temperature in 7th district is 180 degree ~ 190 degree, and the time that raw material passes through is 200 seconds;
8th district: the temperature in 8th district is 170 degree ~ 180 degree, and the time that raw material passes through is 200 seconds;
9th district: the temperature in 9th district is 160 degree ~ 170 degree, and the time that raw material passes through is 200 seconds;
(3), matched moulds:
Carry out closing up mould;
(4), injection moulding:
Be injected in mold cavity by the raw material of fusing, pressure during injection moulding is 75 ~ 85MPa; The flow of injection is 13 ~ 18 liters/second; The position of injection is 1200 ~ 1800mm, and the position of injection refers to the position of screw rod in barrel, and the time of injection is 120 ~ 250s;
Pressure during storing is 70 ~ 110MPa, and flow during storing is 5 ~ 8 liters/second, and position during storing is 1245 ~ 1800mm; The storing time is 900 ~ 2500S;
(5), shaping pressurize:
Pressure during pressurize is 25 ~ 50MPa, and flow during pressurize is 5 ~ 8 liters/second, and the time of pressurize is 200 ~ 500s;
(6), cool:
The time of mold cools down is 1195 ~ 2005s, and the thermostat temperature of cooling water tank is: 20 DEG C; The cool time of cooling water tank is 1200 ~ 2100S;
(7), storing:
Storing will successively through three storing sections,
The stock pressure of one storing section is 90 ~ 110 MPa; The storing time is 40 ~ 60S;
The stock pressure of two storing sections is 70 ~ 90 MPa, and the storing time is 30 ~ 40S; The position that storing stops is 300 ~ 400mm;
The stock pressure of three storing sections is 90 ~ 110 MPa, and the storing time is 40 ~ 60S; The position that storing stops is 1650 ~ 1850mm;
Penetrating the pressure moved back is 110 ~ 130 MPa; Penetrating the time of moving back is 90 ~ 110S; Penetrating the position of moving back termination is 1650 ~ 1850mm;
(8), die sinking:
Penetrate after having moved back, injection machine opens mould automatically, and operative employee takes out goods;
(9), fully cool:
Goods fully cool in cooling water tank under supercooled water condition, and the time of fully cooling is 1200 ~ 2100S;
(10), check, assemble and packaging:
Inspector detects the outward appearance of goods, the index of size, detect qualified after goods, assemble it, after having assembled, packaging personnel pack finished product and put in storage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310353639.3A CN103407055B (en) | 2013-08-15 | 2013-08-15 | A kind of preparation method of large-scale polyethylene tube |
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| CN201310353639.3A CN103407055B (en) | 2013-08-15 | 2013-08-15 | A kind of preparation method of large-scale polyethylene tube |
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| CN103407055B true CN103407055B (en) | 2015-07-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106863728B (en) * | 2016-12-29 | 2019-02-15 | 海天塑机集团有限公司 | A kind of injection molding machine waits the storing method and control system of interval time using circulation |
| CN106827436A (en) * | 2017-01-20 | 2017-06-13 | 埃维柯塑料科技（安徽）有限公司 | A kind of PE Plastic valves Shooting Technique |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101480828A (en) * | 2008-12-31 | 2009-07-15 | 浙江尤尼克管业有限公司 | Method for preparing ultra-large caliber PE blanking adapter and flange, and mold thereof |
| CN102585372A (en) * | 2012-02-28 | 2012-07-18 | 昆明普尔顿管业有限公司 | Pipe joint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5269822B2 (en) * | 2010-01-26 | 2013-08-21 | 日本ポリエチレン株式会社 | Polyethylene for thin-walled containers and containers made thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101480828A (en) * | 2008-12-31 | 2009-07-15 | 浙江尤尼克管业有限公司 | Method for preparing ultra-large caliber PE blanking adapter and flange, and mold thereof |
| CN102585372A (en) * | 2012-02-28 | 2012-07-18 | 昆明普尔顿管业有限公司 | Pipe joint |
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