Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of cleaning method of half tone, realizes the good cleaning of half tone, avoids disconnected grid and empty seal to wait the generation of printing bad phenomenon.
In order to solve above technical problem, the invention provides a kind of cleaning method of half tone, comprise the following steps:
Half tone, the first non-dust cloth and the second non-dust cloth are provided respectively;
Add terpinol and ethanol respectively on described the first non-dust cloth and the second non-dust cloth, obtain first and soak non-dust cloth and second and soak non-dust cloth;
Utilize successively described first to soak non-dust cloth and second and soak non-dust cloth described half tone is carried out wiping.
Preferably, described half tone surface is coated with slurry.
Preferably, describedly utilize successively first to soak non-dust cloth and second and soak non-dust cloth and described half tone is carried out wiping be specially:
Step a1) utilize described first to soak non-dust cloth described half tone is carried out wiping;
Step a2) utilize described second to soak non-dust cloth to described half tone wiping, dry 10~30 seconds.
Preferably, wiping number of times described step a1) is 2~5 times.
Preferably, wiping number of times described step a2) is 2~5 times.
Preferably, be 10~20 seconds described drying time.
Preferably, the volume of described terpinol is 20~100ml.
Preferably, described terpinol is prepared as follows:
Take AEO as emulsifying agent, be to carry out the homopinol reaction under the condition of catalyst at sulfuric acid with turpentine oil, obtain terpinol after dehydration.
Preferably, the preparation method of described terpinol also comprises:
Described terpinol is carried out fractionation to be processed.
Preferably, the temperature of described homopinol reaction is 15~30 ℃.
The invention provides a kind of cleaning method of half tone, comprise the following steps: half tone, the first non-dust cloth and the second non-dust cloth are provided respectively; Add terpinol and ethanol respectively on described the first non-dust cloth and the second non-dust cloth, obtain first and soak non-dust cloth and second and soak non-dust cloth; Utilize successively described first to soak non-dust cloth and second and soak non-dust cloth described half tone is carried out wiping.Compared with prior art, utilization of the present invention is moistened with the non-dust cloth wiping half tone of terpinol, and this terpinol can dilute the slurry that is coated on mesh, and when utilizing this half tone to print, slurry can permeate mesh and be printed onto on silicon chip.Therefore, the cleaning method of half tone provided by the invention has been realized the good cleaning of half tone, avoids resolving the generation of the printing such as grid and empty seal bad phenomenon.
The specific embodiment
The below is clearly and completely described the technical scheme in the embodiment of the present invention, and obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The invention discloses a kind of cleaning method of half tone, comprise the following steps:
Half tone, the first non-dust cloth and the second non-dust cloth are provided respectively;
Add terpinol and ethanol respectively on described the first non-dust cloth and the second non-dust cloth, obtain first and soak non-dust cloth and second and soak non-dust cloth;
Utilize successively described first to soak non-dust cloth and second and soak non-dust cloth described half tone is carried out wiping.
Serigraphy is the important procedure of preparation solar-energy photo-voltaic cell, and half tone is the important component part of serigraphy simultaneously.At present, electrode of solar battery is gradually to close grid and thin grid development, the viscosity of the silver slurry of printing front gate line is increasing, empty seal, disconnected grid appear when easily causing the serigraphy front gate line, to such an extent as to the solar battery sheet after sintering usually occur disconnected grid or and empty seal problem, grid line can not be collected photo-generated carrier well, the carrier that secondary grid are collected can't be transferred on main grid, reduce short circuit current, affected the conversion efficiency of cell piece.
Half tone provided by the invention is preferably through the half tone that uses or new half tone, and more preferably the surface is coated with the half tone of slurry.Be moistened with slurry due to described through the half tone surface of using, thereby when this half tone was utilized again, the slurry viscosity was large, can bring great inconvenience to serigraphy, was prone to disconnected grid and empty seal problem, therefore, need to carry out cleaning to this half tone.
The present invention is to the material of described the first non-dust cloth and the second non-dust cloth and have no special requirements, can adopt the non-dust cloth that is formed by the two braidings of polyester fiber well known to those skilled in the art, it has soft surface, is easy to the wiping sensing surface, the characteristics such as the not defiber that rubs, good water imbibition and cleaning efficiency.
The terpinol that the present invention adopts can adopt commercial product, and there is no particular restriction for the manufacturer of described commercial terpinol and model, adopts the manufacturer of model well known to those skilled in the art to get final product.In addition, described terpinol can also be prepared as follows: take AEO as emulsifying agent, be to carry out the homopinol reaction under the condition of catalyst at sulfuric acid with turpentine oil, obtain terpinol after dehydration.Wherein, the temperature of described homopinol reaction is preferably 15~30 ℃, and more preferably 20~30 ℃, more preferably 25 ℃.In addition, utilizing the terpinol that said method prepares is thick terpinol, therefore, also preferably includes described terpinol is carried out the step that fractionation is processed, and the step by this fractionation is processed obtains smart terpinol.
In addition, there is no particular restriction for the terpinol that adds on the first non-dust cloth and the second non-dust cloth and the volume of ethanol in the present invention, thereby namely described the first non-dust cloth and the wetting purpose that half tone is carried out wiping that reaches of the second non-dust cloth can be got final product.The volume of described terpinol is preferably 20~100ml, more preferably 30~70ml, more preferably 50ml; The volume of described ethanol is preferably 20~100ml, more preferably 30~70ml, more preferably 50ml.
According to the present invention, describedly utilize successively described first to soak non-dust cloth and second and soak non-dust cloth and described half tone is carried out wiping be specially: step a1) to utilize described first to soak non-dust cloth described half tone is carried out wiping; Step a2) utilizing described second, to soak non-dust cloth dry after to described half tone wiping.Wherein, described step a1) wiping number of times is preferably 2~5 times, and more preferably 3~5 times, more preferably 3~4 times; Described step a2) wiping number of times is preferably 2~5 times, and more preferably 3~5 times, more preferably 3~4 times.At above-mentioned steps a1) in, can also place after wiping 20~40 minutes, the described placement purpose of 20~40 minutes is, half tone is soaked by terpinol, to block the slurry dilution of mesh with terpinol, and make slurry can see through mesh, therefore, the preferred placement 25~35 minutes, more preferably 30 minutes.In addition, due to the requirement of solar cell slice assembly line to the time, therefore, utilize first to soak non-dust cloth and can also need not after to described half tone wiping standingly, directly be for further processing after wiping, guaranteed the production time of solar battery sheet.Step a2) in, described drying preferably adopts air-dry form, and the time of described drying is preferably 10~30 seconds, and more preferably 10~20 seconds, more preferably 15 seconds.
In sum, utilization of the present invention is moistened with the non-dust cloth wiping half tone of terpinol, and this terpinol can dilute the slurry that is coated on mesh, and when again utilizing this half tone to print, slurry can permeate mesh and be printed onto on silicon chip.Therefore, the cleaning method of half tone provided by the invention has been realized the good cleaning of half tone, avoids resolving the generation of the printing such as grid and empty seal bad phenomenon.
Half tone through above-mentioned cleaning can carry out the secondary use, also can before being installed, new half tone carry out cleaning to new half tone, the generation of pre-anti-breaking grid and empty seal, extended the service life of half tone, reduced the supplies consumption in workshop, reduce the number of efficient cell piece on the low side, improve the whole efficiency of cell piece.Utilize the half tone of above-mentioned cleaning method cleaning can produce continuously 5 hours at least.
In order to further illustrate technical scheme of the present invention, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these describe just as further illustrating the features and advantages of the present invention, rather than limiting to the claimed invention.
Following examples all utilize production line to become product to 10000 solar battery sheets with comparative example, and the chemical reagent that the embodiment of the present invention and comparative example adopt is commercial.
Embodiment 1
The first non-dust cloth and the second non-dust cloth are provided respectively;
Add 50ml terpinol and 50ml ethanol respectively on described the first non-dust cloth and the second non-dust cloth, obtain first and soak non-dust cloth and second and soak non-dust cloth;
Utilize production line to carry out the production of solar battery sheet, when volume production to 6834 slice, disconnected grid phenomenon occurs, utilize described first to soak non-dust cloth described half tone is carried out wiping; Then utilize described second to soak non-dust cloth to described half tone wiping, air-dry 15 seconds, 30 seconds consuming time, until disconnected grid phenomenon does not appear in 10000 all production end, be 30 seconds the downtime that the wiping half tone causes;
In the solar battery sheet production process, due to broken 39 of external force factor, obtain 9961 solar battery sheets.
9961 solar battery sheets to the present embodiment preparation carry out the outward appearance observation, and because disconnected grid are 5 with the defective work that empty seal causes, shared disqualification rate is 0.050%.
9961 solar battery sheets to the present embodiment preparation sort testing efficiency, and average efficiency is 16.54%, and efficient is 35 lower than 15% sheet number, and proportion is 0.0.351%.
Embodiment 2
New half tone, the first non-dust cloth and the second non-dust cloth are provided respectively;
Add 50ml terpinol and 50ml ethanol respectively on described the first non-dust cloth and the second non-dust cloth, obtain first and soak non-dust cloth and second and soak non-dust cloth;
Utilize first to soak non-dust cloth to new half tone wiping 10 seconds, placed 5 minutes, the equipment that is loaded on uses, and after using 5.9 hours on production line, empty seal occurs once, after wiping to the production of completing 10000 solar battery sheets.
Comparative example 1
Utilize production line to carry out the production of solar battery sheet, when volume production to 6852 slice, disconnected grid phenomenon occurs, utilize dried non-dust cloth wiping half tone, 5 seconds consuming time;
Production line disconnected grid phenomenon occurs again when volume production to 7879 slice, again utilize dried non-dust cloth wiping half tone, 5 seconds consuming time;
Production line empty seal phenomenon occurs, wiping half tone, 15 seconds consuming time when volume production to 7905 slice;
Production line disconnected grid phenomenon occurs when volume production to 8664 slice, utilize dried non-dust cloth wiping half tone, 5 seconds consuming time;
Production line disconnected grid phenomenon occurs when volume production to 9149 slice, utilize dried non-dust cloth wiping half tone, 5 seconds consuming time;
Production line disconnected grid phenomenon occurs when volume production to 9187 slice, utilize dried non-dust cloth wiping half tone, 15 seconds consuming time; Be 50 seconds the downtime that the wiping half tone causes;
In the solar battery sheet production process, due to broken 48 of external force factor, obtain 9952 solar battery sheets.
9952 solar battery sheets to the preparation of this comparative example carry out the outward appearance observation, and because disconnected grid are 36 with the defective work that empty seal causes, shared disqualification rate is 0.583%.
9952 solar battery sheets to the preparation of this comparative example sort testing efficiency, and average efficiency is 16.51%, and efficient is 58 lower than 15% sheet number, and proportion is 0.583%.
Comparative example 2
New half tone is provided;
New half tone is directly installed on equipment uses, after using 4.2 hours on production line, disconnected grid and empty seal phenomenon occur one by one, when print 10000, during 5 disconnected grid appear, 3 empty printing.
Can find out from above-described embodiment and comparative example, this utilization is moistened with the non-dust cloth wiping half tone of terpinol, has realized the good cleaning of half tone, avoids resolving the generation of the printing such as grid and empty seal bad phenomenon.Experimental result shows, the half tone after the cleaning method of half tone provided by the invention is processed can be produced 5 hours at least continuously.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, realization in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.