CN105056651A - Environment-friendly coating process for adhesive tape - Google Patents
Environment-friendly coating process for adhesive tape Download PDFInfo
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- CN105056651A CN105056651A CN201510415800.4A CN201510415800A CN105056651A CN 105056651 A CN105056651 A CN 105056651A CN 201510415800 A CN201510415800 A CN 201510415800A CN 105056651 A CN105056651 A CN 105056651A
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- adhesive tape
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Abstract
The invention provides an environment-friendly coating process for an adhesive tape. The process comprises the following steps: four drain ports are formed in the bottom of a bellows and connected to an air inlet of a blast unit, and the bellows is connected to a high-pressure fan; a concentration sensor is mounted in an oven and connected to a PLC (programmable logic controller) central control system, and waste gas with certain concentration is exhausted into a delivery pipeline; a negative pressure sensor is mounted on the delivery pipeline, and frequency conversion of a main unit of a vacuum recovery system is controlled through the negative pressure sensor; the vacuum recovery system comprises a plurality of carbon tanks, the carbon tanks are switched for adsorption and subjected to desorption after saturation of adsorption; the waste gas after vacuum desorption is changed into a liquid through a condenser, the liquid is collected to a liquid separation tank, and a solvent is separated from water and recycled. The environment-friendly coating process for the adhesive tape is simple, high in efficiency and safe, has the functions of energy saving, consumption reduction and safety, and brings extremely high practical values to the adhesive product industry.
Description
Technical field
The present invention relates to adhesive article industry, refer in particular to a kind of adhesive tape environmental protection coating process.
Background technology
The common coating method of existing adhesive tape industry, all that solvent-borne type glue is coated in above base material paper by the mode of transfer is flat, through bellows by solvent evaporation and carry out uncontrollable discharge, and the toluene that in existing solvent glue industry, 99% enterprise is all is as solvent, to atmosphere pollution very serious after toluene uncontrollable discharge, destroy ecological environment.Toluene is as the refinement product of oil, and existing coating process is direct discharge, cannot recycle, so just increase energy consumption.Existing coating process be uncontrollable discharge in air, toluene easily produces blast and poisoning after reaching finite concentration, abnormally dangerous when producing.
Summary of the invention
For overcoming the defect existing for prior art, provide a kind of adhesive tape environmental protection coating process environmental protection being served to great function.
Adhesive tape environmental protection coating process of the present invention, comprises bellows, a high pressure positive blower and a baking oven, comprises the following steps:
Bottom bellows, four exhaust outlets are installed, by the welding airduct series connection of four exhaust outlets, are connected to the air inlet of air blast, the exhaust duct of each bellows is connected on high pressure positive blower with threeway;
In oven interior, a concentration sensor is installed, is connected to PLC central control system, thus control the air quantity of high pressure positive blower, the waste gas of certain concentration is entered in conveyance conduit;
Conveyance conduit installs a B/P EGR Back Pressure Transducer EGR, is controlled the main frame frequency conversion of vacuum recovery system by B/P EGR Back Pressure Transducer EGR, thus make to be in negative pressure state all the time in waste gas pipeline road;
Vacuum recovery system comprises a plurality of carbon groove, and each carbon groove switches absorption, by time controling, carries out desorption parsing after the absorption of one of them carbon groove is saturated;
Through condenser, waste gas is become liquid again by vacuum analysis waste gas out, then collect liquid separation tank, solvent and water are separated recycling.
Described vacuum recovery system also comprises cooler and dedusting filter screen, and one end of described cooler is connected with blower fan, and the other end is connected, in order to filtering exhaust with a dedusting filter screen.
What described vacuum recovery system adopted is charcoal absorption, and active carbon adopts toluene special-purpose activated charcoal, controls adsorbance by adsorption time, the time to after automatically switch to another one charcoal groove and adsorb.
The vacuum mode adopted when described vacuum recovery system desorption, under vacuum mode, the evaporating temperature of desorption parsing toluene can be lower than normal temperature desorption resolution temperature.
Be-0.02MPa by pressure set in baking oven, the B/P EGR Back Pressure Transducer EGR on described conveyance conduit is set as-0.5MPa.
The negative pressure of described carbon groove is-0.5MPa, and steam pressure is set as 0.01MPa, and temperature is 60 degree.
The present invention is owing to using above technical scheme, and the beneficial effect made it have is:
The present invention accomplishes that solvent is become by uncontrollable discharge in bellows drying course and discharges in a organized way, in process of production, adopt negative pressure baking oven, adopt the technology such as the wind speed flow direction, inner bellows is made to produce negative pressure, solvent toluene can not be leaked to bellows outside in the process of evaporation, like this would not uncontrollable discharge, then to be recycled being sent in the exhaust gas centralized of oven interior on conveying main pipeline with self-designed reclaimer by high pressure positive blower.Adhesive tape environmental protection coating process of the present invention, method is simple, efficiency is high and safety, reaches energy-saving and cost-reducing and safe effect, brings high practical value to adhesive article industry.
Accompanying drawing explanation
Fig. 1 is negative pressure baking oven schematic diagram of the present invention;
Fig. 2 is the flow chart of vacuum recovery system of the present invention;
Fig. 3 is the schematic diagram of vacuum recovery system of the present invention.
Detailed description of the invention
For the benefit of to the understanding of structure of the present invention, below think and coordinate drawings and Examples to be described.
Shown in composition graphs 1 to Fig. 3, adhesive tape environmental protection coating process of the present invention, first installs four exhaust outlets 2 bottom bellows 1, by the welding exhaust duct series connection of four exhaust outlets 2, is connected to the air inlet 31 of air blast 3, adopts hot air circulation, saving heat energy; The exhaust duct of each bellows 1 is connected on high pressure positive blower 4 with threeway, and high pressure positive blower 4 adopts VFC, realizes high pressure positive blower 4 air quantity and is in controllable state; In oven interior, a concentration sensor is installed, be connected to PLC central control system, baking oven pressure is set to-0.02MPa, thus control the air quantity of high pressure positive blower 4, the waste gas of certain concentration is entered in conveyance conduit 5 after dust removal and filtration net filtration, conveyance conduit 5 installs a B/P EGR Back Pressure Transducer EGR 6, its pressure set is-0.5MPa, vacuum recovery system starts automatically, the main frame frequency conversion of vacuum recovery system is controlled by B/P EGR Back Pressure Transducer EGR 6, thus make to be in negative pressure state all the time in waste gas pipeline road 5, waste gas can not be leaked, reaches energy-saving and cost-reducing effect;
Vacuum recovery system comprises the carbon groove of more than three, the present invention is for four, waste gas sends into the first carbon groove 7, second carbon groove 8 and the 3rd carbon groove 9,4th carbon groove 10 is in wait, and what vacuum recovery system adopted is charcoal absorption, and active carbon adopts toluene special-purpose activated charcoal, adsorption rate can reach 99.99%, control adsorbance by adsorption time, the adsorption time of recovery system is set as 120 minutes, desorption time is set to 90 minutes.By the time the first carbon groove 7, when second carbon groove 8 and the 3rd carbon groove 9 are adsorbed onto 120 minutes, first carbon groove 7 can will automatically switch to detachment status, so the second carbon groove 8, 3rd carbon groove 9 and the 4th carbon groove 10 become adsorbed state, simultaneously adsorption time becomes 0 and restarts timing, after 90 minutes desorption times of the first carbon groove 7 arrive, be in wait state, after time upon adsorption arrives 120 minutes, second carbon groove 8 automatically switches into detachment status, so the first carbon groove 7, 3rd carbon groove 9 and the 4th carbon groove 10 are 0.01MPa, temperature controls at 60 degree, when carbon groove is when switching under desorption mode, steam valve and vavuum pump start automatically, the frequency conversion of vavuum pump is controlled by the B/P EGR Back Pressure Transducer EGR 6 of carbon groove, carbon groove inside is made to remain at vacuum state in desorption process, waste gas again gasifies after active carbon back warp crosses Steam Heating, become gas and enter condenser, condenser interlayer chilled water circulation temperature lowering, by gas liquefaction, become Liquid transfer to oil-water separation tank, solvent adhesive is all adopt the solvent of not affine water as the solution of solvent adhesive, in separating tank, solvent is understood automatically and water stratification, automatically solvent tank is entered, solvent in such solvent tank just can recycle.
Whole process of the present invention is all carried out in negative pressure process, leaks like this, and what catch fire may just reduce greatly, can turn waste into wealth, serve energy-saving and cost-reducing effect.Be all automatically control in process of production, if system has an action not work or not in place, so will stop from coating machine to recovery whole system, absolute is safe and reliable.
Adhesive tape environmental protection coating process of the present invention, method is simple, efficiency is high and safety, reaches energy-saving and cost-reducing and safe effect, brings high practical value to adhesive article industry.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements all fall in the claimed scope of the invention, and application claims protection domain is defined by appending claims and equivalent thereof.
Claims (6)
1. an adhesive tape environmental protection coating process, comprises bellows, a high pressure positive blower and a baking oven, it is characterized in that comprising the following steps:
Bottom bellows, four exhaust outlets are installed, by the welding airduct series connection of four exhaust outlets, are connected to the air inlet of air blast, the exhaust duct of each bellows is connected on high pressure positive blower with threeway;
In oven interior, a concentration sensor is installed, is connected to PLC central control system, thus control the air quantity of high pressure positive blower, the waste gas of certain concentration is entered in conveyance conduit;
Conveyance conduit installs a B/P EGR Back Pressure Transducer EGR, is controlled the main frame frequency conversion of vacuum recovery system by B/P EGR Back Pressure Transducer EGR, thus make to be in negative pressure state all the time in waste gas pipeline road;
Vacuum recovery system comprises a plurality of carbon groove, and each carbon groove switches absorption, by time controling, carries out desorption parsing after the absorption of one of them carbon groove is saturated;
Through condenser, waste gas is become liquid again by vacuum analysis waste gas out, then collect liquid separation tank, solvent and water are separated recycling.
2. adhesive tape environmental protection coating process as claimed in claim 1, it is characterized in that: described vacuum recovery system also comprises cooler and dedusting filter screen, and one end of described cooler is connected with blower fan, the other end is connected, in order to filtering exhaust with a dedusting filter screen.
3. adhesive tape environmental protection coating process as claimed in claim 1, it is characterized in that: what described vacuum recovery system adopted is charcoal absorption, active carbon adopts toluene special-purpose activated charcoal, controls adsorbance by adsorption time, the time to after automatically switch to another one charcoal groove and adsorb.
4. adhesive tape environmental protection coating process as claimed in claim 1, is characterized in that: the vacuum mode adopted when described vacuum recovery system desorption, and under vacuum mode, the evaporating temperature of desorption parsing toluene can be lower than normal temperature desorption resolution temperature.
5. adhesive tape environmental protection coating process as claimed in claim 1, is characterized in that: be-0.02MPa by pressure set in baking oven, and the B/P EGR Back Pressure Transducer EGR on described conveyance conduit is set as-0.5MPa.
6. the adhesive tape environmental protection coating process according to any one of claim 1-5, is characterized in that: the negative pressure of described carbon groove is-0.5MPa, and its steam pressure is set as 0.01MPa, and temperature is 60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510415800.4A CN105056651A (en) | 2015-07-15 | 2015-07-15 | Environment-friendly coating process for adhesive tape |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510415800.4A CN105056651A (en) | 2015-07-15 | 2015-07-15 | Environment-friendly coating process for adhesive tape |
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| Publication Number | Publication Date |
|---|---|
| CN105056651A true CN105056651A (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510415800.4A Pending CN105056651A (en) | 2015-07-15 | 2015-07-15 | Environment-friendly coating process for adhesive tape |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105617810A (en) * | 2016-03-18 | 2016-06-01 | 天伟化工有限公司 | Closed-cycle recycling method for solvent in PVC foaming board production |
| CN113842746A (en) * | 2021-09-17 | 2021-12-28 | 苏州兆和通风设备制造有限公司 | Organic gas recovery modular assembly and coating machine waste gas treatment system |
-
2015
- 2015-07-15 CN CN201510415800.4A patent/CN105056651A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105617810A (en) * | 2016-03-18 | 2016-06-01 | 天伟化工有限公司 | Closed-cycle recycling method for solvent in PVC foaming board production |
| CN113842746A (en) * | 2021-09-17 | 2021-12-28 | 苏州兆和通风设备制造有限公司 | Organic gas recovery modular assembly and coating machine waste gas treatment system |
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Application publication date: 20151118 |
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| RJ01 | Rejection of invention patent application after publication |