CN102553121B - Device and method for removing peculiar smell of zinc sulfide laser dielectric film - Google Patents

Abstract

The invention discloses a device and a method for removing peculiar smell of a zinc sulfide laser dielectric film. Only foreign gases on the surface of the zinc sulfide laser dielectric film can be extracted in the conventional method, and SO2 and H2S gases cannot be completely effectively removed. The device for removing the peculiar smell of the zinc sulfide laser dielectric film is characterized by comprising an unreeling rack, a desulfurization tank, a clean water tank, an oven and a reeling rack which are sequentially arranged front and back; a pH tester connected automatic liquid adding device is arranged above the desulfurization tank; the clean water tank is provided with a water spraying and cleaning device; a wiping device for removing redundant water is arranged above the water spraying and cleaning device; and a desulfurizing agent Na2HPO4 solution is filled in the desulfurization tank. By the device and the method, the SO2 and the H2S in the zinc sulfide laser dielectric film can be effectively cleared, and the requirement of a tobacco packaging material for smell can be met, so that the zinc sulfide laser dielectric film can be applied to tobacco packaging.

Description

A kind of device and method that removes the radium-shine deielectric-coating peculiar smell of zinc sulphide

Technical field

The present invention relates to a kind of device and method that removes the radium-shine deielectric-coating peculiar smell of zinc sulphide.

Background technology

Zinc sulphide (ZnS) has outstanding physical characteristic, has unique luminous effect, and its reflectivity is up to 2.35-2.37, as a kind of Coating Materials of high glaze, is more and more applied to packaging field.

Zinc sulphide (ZnS) deielectric-coating has two large features: the radium-shine figure after plating medium has bright metal sense, and laser effect is more obvious.Topmost advantage be after plating medium radium-shine can be compound with other paper, moulding material, radium-shine figure is unaffected.Radium-shine material after compound just has advantages of radium-shine figure rub resistance, and other transparent laser films that do not plate medium do not possess.But the radium-shine media wrapper of zinc sulphide has the penetrating odor of similar rotten egg, Peculiar Smell is a technology barriers, particularly tobacco and the packaging for foodstuff that limits that this coating material applies on the packaging always, is strict with packaging material free from extraneous odour.

Adopt GC-MS contrasted coating of the same race plate respectively zinc sulphide and aluminium lamination deielectric-coating graphs, near 120S position, peak value is variant, result two peaks of mass spectral analysis are respectively SO ₂and H ₂s produces, and the smell of zinc sulphide deielectric-coating has also been verified this conclusion.Its principle is the gaseous state that under high temperature, vacuum condition, ZnS is become by solid state sublimation, and in evaporate process, in film coating, water and the oxygen of trace react with gaseous state ZnS, generates SO ₂and H ₂s gas and zinc oxide, chemical equation is as follows:

ZnS+H ₂O→H- ₂S+ZnO

2H ₂S+3O ₂→2SO ₂+2H ₂O

Together with the zinc sulphide of zinc oxide and gaseous state, on film article surface, form the coating of one deck densification, and the SO of adsorption reaction generation ₂and H ₂s gas.

Because ZnO is good embedded photoluminescent material, under room temperature to the reflectivity of visible ray higher than ZnS material.In fact the ZnO producing in Vacuum Deposition process has strengthened the optical property of ZnS material, does not affect the appearance effect of packaging material.If can effectively remove SO ₂and H ₂s gas, can reach the requirement of tobacco package material to smell.

In order to address the above problem, people have proposed negative pressure of vacuum removal method, washing dissolution method, but above-mentioned two kinds of techniques can only extract the foreign gas of film coated surface, and rolling rear impurity gas permeation still has peculiar smell to coating surface, can not fully effectively remove SO ₂and H ₂s gas.

Summary of the invention

Technical problem to be solved by this invention is to overcome the defect that above-mentioned prior art exists, and provides a kind of and can effectively remove SO in the radium-shine deielectric-coating of zinc sulphide ₂and H ₂the apparatus and method of two kinds of materials of S.

For this reason, the technical solution used in the present invention is: a kind of for removing the device of the radium-shine deielectric-coating peculiar smell of zinc sulphide, it is characterized in that it comprises tandem unwinding rack, desulfurizer, Rinsing Area, baking oven and rolling frame successively, the top of desulfurizer is provided with pH tester line automatic liquid feeder, described Rinsing Area is furnished with spraying-cleaning device, the top of spraying-cleaning device is provided with for removing the wiping arrangement of excessive moisture, has desulfurizing agent Na in desulfurizer ₂hPO ₄solution, also can adopt other similar desulfurizing agents;

Described pH tester line automatic liquid feeder comprises fluid reservoir and is arranged on the valve on the drain pipe of fluid reservoir, and this valve is controlled by a controller, and described controller connects a pH tester, and the detection probe of this pH tester is placed in desulfurizer.

Above-mentioned for removing the device of the radium-shine deielectric-coating peculiar smell of zinc sulphide, in desulfurizer, by partition, form the interval of a plurality of continuous distributed, the bottom at a plurality of intervals interconnects mutually, makes in desulfurizer the concentration of desulfurizing agent everywhere as far as possible consistent, thereby also makes in desulfurizer pH value everywhere also as far as possible unanimously; Described wiping arrangement consists of multipair compression roller, and every pair of compression roller is comprised of two compression rollers that are close to setting, and a compression roller is wherein by driven by motor, and during work, deielectric-coating is sandwiched between two compression rollers, by two compression rollers, deielectric-coating is pushed.

Above-mentioned for removing the device of the radium-shine deielectric-coating peculiar smell of zinc sulphide, it also comprises a plurality of film guiding rollers that deielectric-coating played to guiding and supporting role.

Said apparatus is for removing the method for the radium-shine deielectric-coating peculiar smell of zinc sulphide, and it comprises the following steps:

1) unreel, the radium-shine deielectric-coating of zinc sulphide enters and in desulfurizer, carries out desulfurization;

2) pH tester detects Na in desulfurizer in real time ₂hPO ₄the pH value of solution, Na in desulfurizer ₂hPO ₄the pH value of solution is less than at 7.4 o'clock, and pH tester feeds back to controller this detection information, and controller opens according to this information the valve switch that liquid storage is filled with, and automatically adds the Na of 0.1-0.3mol/L ₂hPO ₄solution; When pH tester detects Na in desulfurizer ₂hPO ₄when the pH value of solution maintains again between 7.4-8.0, pH tester is this communication to controller, and controller cuts out according to this information the valve that liquid storage is filled with;

3) then the radium-shine deielectric-coating of zinc sulphide is removed Na attached to it through the spraying-cleaning device of Rinsing Area ₂hPO ₄solution, enters wiping arrangement and removes excessive moisture, then enters oven for drying, last rolling.

The present invention can remove the radium-shine deielectric-coating SO of zinc sulphide effectively for removing the device and method of the radium-shine deielectric-coating peculiar smell of zinc sulphide ₂and H ₂two kinds of materials of S, can reach the requirement of tobacco package material to smell, thereby can make the radium-shine deielectric-coating of zinc sulphide be applied in tobacco package.

Below in conjunction with specification drawings and specific embodiments, the present invention is further illustrated.

Accompanying drawing explanation

Fig. 1 is device schematic diagram of the present invention.

Fig. 2 is the structural representation of pH tester line automatic liquid feeder of the present invention.

The specific embodiment

As shown in Figure 1 for removing the device of the radium-shine deielectric-coating peculiar smell of zinc sulphide, it is composed as follows: unwinding rack 1 and rolling frame 6, for placing deielectric-coating; Desulfurizer 2 forms the interval of a plurality of continuous distributed by partition, the bottom at a plurality of intervals is interconnected, and makes the essentially identical numerical value of pH value maintenance everywhere in whole groove; Desulfurizing agent 10(is the Na of 0.2mol/L ₂hPO ₄solution), be positioned at two adjacent intervals that cut off formation; PH tester line automatic liquid feeder 9, setting pH value alarm range is between 7.4-8.0, by the Na of automatic dripping 0.2mol/L ₂hPO ₄solution, controls the pH value of solution in setting range; Rinsing Area 3, is furnished with spraying-cleaning device 4; Wiping arrangement 8, for removing excessive moisture; Baking oven 5, inside has heater block.

As impurity, remove the mode that the radium-shine deielectric-coating of zinc sulphide of object draws by film guiding roller and pass through successively a plurality of intervals of desulfurizer 2, and in interval, remove the SO in radium-shine deielectric-coating ₂and H ₂s.Na in interval ₂hPO ₄solution, by with deielectric-coating in SO ₂and H ₂s reaction, to reach the object of removing peculiar smell.React as follows:

SO ₂+ H ₂O←→2H ⁺+SO ₃ ^2- H ₂S+OH ^-=H ₂O+S↓

H ⁺+OH ^-=H ₂O SO ₃ ^2-+2Na ⁺+2OH ^-=H ₂O+Na ₂SO ₄

PH tester line automatic liquid feeder as shown in Figure 2, it comprises fluid reservoir 11 and is arranged on the valve 14 on the drain pipe of fluid reservoir, this valve 14 is controlled by a controller 12, and described controller 12 connects pH tester 13, and the detection probe 15 of this pH tester 13 is placed in desulfurizer.

PH tester line automatic liquid feeder, can detect Na automatically ₂hPO ₄the pH value of solution the automatically Na of interpolation 0.2mol/L ₂hPO ₄solution, makes Na in interval ₂hPO ₄the pH value of solution will be controlled between 7.4-8.0.If above-mentioned pH value is less than 7.4, Na ₂hPO ₄solution and SO ₂and H ₂s reaction speed is too slow, cannot remove fast peculiar smell; When above-mentioned pH value is greater than 8.0, due to Na ₂hPO ₄solution alkalescence strengthens, OH ^-can there is chemical reaction with ZnO in ion, generate Na2[Zn (OH) 4] destroy the dielectric layer of deielectric-coating, chemical equation is as follows:

ZnO+2Na ⁺+2OH ^-+H2O →Na2[Zn(OH)4]

In view of the foregoing, above-mentioned Na ₂hPO ₄the pH value of solution will be controlled between 7.4-8.0.

When the pH value that desulfurizer detected when pH tester line automatic liquid feeder 9 is less than 7.4, by controller, automatically add the Na of 0.2mol/L ₂hPO ₄solution, maintains between 7.4-8.0 its pH value.Radium-shine deielectric-coating 7 is accompanied with Na on face after desulfurizer 2 ₂hPO ₄solution, the essential processing through Rinsing Area 3 and spraying-cleaning device 4 is Na ₂hPO ₄solution is removed, then removes moisture through wiping arrangement 8 as far as possible, through baking oven 5, dries moisture, and last rolling is on rolling frame 6.

Claims (5)

1. one kind for removing the device of the radium-shine deielectric-coating peculiar smell of zinc sulphide, it is characterized in that it comprises tandem unwinding rack, desulfurizer, Rinsing Area, baking oven and rolling frame successively, the top of desulfurizer is provided with pH tester line automatic liquid feeder, described Rinsing Area is furnished with spraying-cleaning device, the top of spraying-cleaning device is provided with for removing the wiping arrangement of excessive moisture, has desulfurizing agent Na in desulfurizer ₂hPO ₄solution;

Described pH tester line automatic liquid feeder comprises fluid reservoir and is arranged on the valve on the drain pipe of fluid reservoir, and this valve is controlled by a controller, and described controller connects a pH tester, and the detection probe of this pH tester is placed in desulfurizer.

2. according to claim 1 for removing the device of the radium-shine deielectric-coating peculiar smell of zinc sulphide, it is characterized in that the interior interval that forms a plurality of continuous distributed by partition of described desulfurizer, the bottom at a plurality of intervals is interconnected.

3. according to claim 2 for removing the device of the radium-shine deielectric-coating peculiar smell of zinc sulphide, it is characterized in that described wiping arrangement consists of multipair compression roller, every pair of compression roller is comprised of two compression rollers that are close to setting, and a compression roller is wherein by driven by motor.

4. according to claim 3 for removing the device of the radium-shine deielectric-coating peculiar smell of zinc sulphide, it is characterized in that this also comprises a plurality of film guiding rollers for removing the device of the radium-shine deielectric-coating peculiar smell of zinc sulphide.

5. described in claim 1-4 any one, device is for removing the method for the radium-shine deielectric-coating peculiar smell of zinc sulphide, and it comprises the following steps:

1) unreel, the radium-shine deielectric-coating of zinc sulphide enters and in desulfurizer, carries out desulfurization;

2) pH tester detects Na in desulfurizer in real time ₂hPO ₄the pH value of solution, Na in desulfurizer ₂hPO ₄the pH value of solution is less than at 7.4 o'clock, and pH tester feeds back to controller this detection information, and controller is opened the valve switch of fluid reservoir according to this information, automatically adds the Na of 0.1-0.3mol/L ₂hPO ₄solution; When pH tester detects Na in desulfurizer ₂hPO ₄when the pH value of solution maintains again between 7.4-8.0, pH tester is this communication to controller, and controller cuts out the valve of fluid reservoir according to this information;

3) then the radium-shine deielectric-coating of zinc sulphide is removed Na attached to it through the spraying-cleaning device of Rinsing Area ₂hPO ₄solution, enters wiping arrangement and removes excessive moisture, then enters oven for drying, last rolling.

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