CN212483371U

CN212483371U - Humidity indicator

Info

Publication number: CN212483371U
Application number: CN202020664444.6U
Authority: CN
Inventors: 李国强
Original assignee: Foshan Shunde Yicheng Moistureproof Technology Co ltd
Current assignee: Foshan Shunde Yicheng Moistureproof Technology Co ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2021-02-05
Anticipated expiration: 2030-04-27

Abstract

The utility model discloses a humidity indicating device, including shell, humidity indication carrier, the shell is made for environmental protection plastics, the shell comprises epitheca, inferior valve, epitheca, inferior valve are embedded and detained together each other, humidity indication carrier presss from both sides the inside between epitheca and inferior valve, be equipped with a plurality of humidity indication area on the humidity indication carrier, different humidity indicators have respectively dripped on a plurality of humidity indication area, be equipped with the bleeder vent on the shell, the bleeder vent communicates with the inner chamber of shell, the top of shell is equipped with humidity indication observation window, the quantity and the position of humidity indication observation window correspond with humidity indication area; the utility model has the advantages of reasonable design, convenient to use, safety ring protect.

Description

Humidity indicator

Technical Field

The utility model relates to a humidity indicating device for indicateing relative humidity in the sealed package especially relates to accord with the relevant regulation of newest environmental protection, accord with the halogen standard, cobalt-free and to the safer, convenient humidity indicating device of packing material when using.

Background

Humidity indicator cards since the invention of 1949, it has been the practice to impregnate the humidity indicator on a blotter paper which is placed directly inside the package whose internal package humidity is to be monitored, and in different humidity environments, the difference in the content of the humidity indicator and the shift in chemical equilibrium produce obvious color differences. The user judges whether the humidity in the package meets the qualified standard or not by judging the difference of the colors. No significant changes have occurred for many years. Such a convenient dip wetness indicator card also reflects some significant problems and deficiencies in actual use. Firstly, because the chemical impregnation liquid has higher activity, the chemical impregnation liquid also ensures that the chemical impregnation liquid can generate obvious chemical reaction with water to reflect obvious difference of colors, but simultaneously generates oxidation reaction with almost all common metal substances, and obviously, in some industries mainly used for humidity indication, such as circuit boards, metal products, military products, ornaments and the like containing metal parts, the chemical impregnation liquid has great potential risk absolutely for packages. Based on the above reasons, humidity card manufacturers have been improving products for many years, for example, in the 2010 patent of our company, patent No. 201020612460.7 prevents the humidity indicator from directly contacting with the packaged product by covering a layer of plastic film on the back surface of the humidity indicator card, which causes many problems in practical use, for example, the humidity indicator card processed by pre-coating heat-covering film is used in the product packaging process, because the heat seal opening has a high temperature in the moment, the pre-coating film on the back surface of the humidity indicator card melts and adheres to the packaged product, and the product in the package is damaged. And another humidity card produced by adopting a film coating process is characterized in that due to the particularity of the film coating process, the film coating layer does not completely block the humidity indicator on the back surface of the humidity value card from contacting with the product, so that the phenomenon that the humidity indicator corrodes the surface of the packaged product still occurs in the practical use of a customer, particularly when the humidity of the inner package is high.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a humidity indicating device with reasonable structural design, convenient use, safety and environmental protection.

Humidity indicating device, including shell, humidity indication carrier, the shell is made for environmental protection plastics, the shell comprises epitheca, inferior valve, epitheca, inferior valve are inlayed each other and are detained together, humidity indication carrier presss from both sides the inside between epitheca and inferior valve tightly, be equipped with a plurality of humidity indication area on the humidity indication carrier, drip the humidity indicator that has the difference on a plurality of humidity indication area respectively, be equipped with the bleeder vent on the shell, the inner chamber intercommunication of bleeder vent and shell, the top of shell is equipped with humidity indication observation window, the quantity and the position of humidity indication observation window are corresponding with humidity indication area.

The shell is made of any one of PA66, ABS, PC, PP, PVC, PE and PMMA materials. The humidity indication carrier is made of blotting paper, and the humidity indication areas are uniformly and horizontally arranged. The air holes are formed in the upper end side wall of the upper shell and the lower end side wall of the lower shell and are horizontally arranged along the four side walls of the upper shell and the lower shell.

The utility model has the advantages that: mainly by the shell that high temperature resistant environmental protection plastics were made, the humidity indicator carrier constitutes, structural design is simple, the shell is by the epitheca, the inferior valve is the buckle each other and is constituted, guarantee that inside humidity indicator can not contact the product by the packing, the side and the bottom surface of shell all have the air vent, an actual humidity for guaranteeing that built-in blotting paper that drips the humidity indicator can be accurate reflects the inner packing, the humidity indicator is common cobalt chloride indicator, perhaps novel cobaltless class compound's indicator, safety ring protects.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

Referring to fig. 1, the humidity indicator includes a housing and a humidity indicator carrier 2, in order to meet the stricter and stricter environmental regulations, the housing is made of environmental protection plastic, the housing is made of any one material selected from PA66, ABS, PC, PP, PVC, PE and PMMA, PA66 is polyamide 66, ABS is acrylonitrile-butadiene-styrene copolymer, PC is linear carbonate polyester, PP is a thermoplastic resin prepared by polymerization of propylene, PVC is polyvinyl chloride, PE is polyethylene, and PMMA is polymethyl methacrylate. The shell comprises epitheca 1, inferior valve 3, epitheca 1, inferior valve 3 inlay each other and detain together, guarantee that inside humidity indicator can not contact the theme product of being packed, humidity indication carrier 2 presss from both sides the inside tight between epitheca 1 and inferior valve 3, be equipped with a plurality of humidity indicating area on the humidity indication carrier 2, drip respectively on a plurality of humidity indicating area and have different humidity indicator, the side and the bottom surface of shell all are equipped with bleeder vent 5, the inner chamber intercommunication of bleeder vent 5 and shell for guarantee built-in blotting paper that drips the humidity indicator can be accurate reflect the actual humidity of inner packing. The vent holes are in other shapes such as square, round, oval, diamond, quincunx and the like, and the functions of the vent holes are the same. The top of shell is equipped with humidity and indicates observation window 4, humidity indicates that the quantity and the position of observation window 4 correspond with humidity indication area. The number of windows is 1-9, usually 3 or 6, according to different industry requirements. The shape of the window is round, round gradual change, square gradual change, ellipse gradual change, diamond gradual change, quincunx gradual change and the like, and the shape of the window is different but the function is the same. The characters that customization was in advance when having the system shell on the shell to and the characters that the later stage required to increase or reduce according to the customer, including the typeface, and the typesetting of whole face all belongs to the utility model discloses a scope of protection. The humidity indicator is completely prevented from contacting with a packaged product due to the adoption of full-shell packaging, and the problem that the humidity indicator oxidizes metal parts of a packaged product even under the condition that the packaging humidity seriously exceeds the standard is completely prevented. The humidity indication carrier 2 is made of blotting paper, and the humidity indication areas are uniformly and horizontally arranged. The moisture indicating support 2 is used to display the moisture condition of the inner package. The humidity indicator is a common cobalt chloride indicator or a novel cobalt-free compound indicator, and is the same as a humidity indicator card sold in the current market of the company, so that the difference between the use of the existing client and the humidity observation habit can not be caused, and the existing product can be smoothly replaced. The air holes 5 are formed in the upper end side wall of the upper shell 1 and the lower end side wall of the lower shell 3, and the air holes 5 are horizontally arranged along the four side walls of the upper shell 1 and the lower shell 3.

According to EN61249-2-21 standard (also called halogen-free standard), the PCB substrate (including auxiliary material) can be called halogen-free PCB board only if bromine is not more than 900PPM, chlorine is not more than 900PPM and bromine + chlorine is not more than 1500PPM, including auxiliary material. The utility model contains a small amount of bromide ions or chloride ions, but adopts a brand new shape to increase the whole weight; the color printing that is accurate with humidity indicator colour when dry, interior fretwork corresponding humidity value or lines, with traditional production with possessing the humidity indicator and gluing the head and pointing out the dot of diameter 1 centimetre size, the humidity indicator that uses can be obvious reduces 75% quantity to and accurately quantify, thereby guaranteed the quantity of halogen compound, the individual item is not higher than 900PPM, the total amount is not higher than 1500PPM. Therefore, the method for reducing the amount of the humidity indicator and increasing the weight of the single product can ensure that the product meets the EN61249-2-21 standard, so that in another embodiment of the invention, the dot-shaped humidity indicating point of the existing humidity indicating card can be changed into a single line, or the method for thoroughly changing the humidity observation by adopting color printing which is based on the color of the humidity indicator when the humidity indicator is dried is adopted, and the method belongs to the protection scope of the invention. The humidity indicator is characterized in that the limited substance in the humidity indicator is not required to contain cobalt compounds according to the European Union REACH regulation, the invention does not contain cobalt compounds, and other accessories do not contain the limited substance which violates the European Union REACH regulation. The application of current humidity indicator card through new humidity indicator has been can accord with EU REACH regulation, the utility model discloses built-in blotting paper that drips the humidity indicator of built-in humidity indicating device is still the same with current product in the material, as long as select for use the shell material to accord with EU REACH regulation material, and the product of this patent production also accords with EU REACH regulation, must pass through third party detection file evidence during specific use. The RoHS directive, the directive to limit the use of certain hazardous substances in electrical and electronic equipment, latest versions (EU)2019/1845 and (EU)2019/1846, mainly lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls (PBBs), polybrominated diphenyl ethers, (PBDE). In the invention patent, the substances are not needed, the raw materials are strictly controlled in the later production, and the raw materials can not contain (or are lower than the specified limit), so the product produced by the invention can meet the ROSH instruction, and the product is proved by a third party detection document when being used specifically. According to the requirements of the national standard GB2494-95, the following verification is carried out by parallel comparison with the existing humidity indicator card:

color change accuracy comparison: referring to tables 1 and 2, static test method was performed. Manufacturing corresponding products according to the requirements, simultaneously producing a cash humidity indicating card with the same indicator, and placing a sample in a humidity environment with constant humidity and humidity value greater than RH5% of the indicating point to be detected to observe the color change condition. It can be seen that the product has the same color change condition as the humidity indicator card commonly used in the market.

Table 1

Table 2

(II) stability: referring to Table 3, the humidity indicating apparatus of three units was placed in a test chamber at a high temperature of 70 +/-two for 24 hours according to the national standard GB-2494-95, and then moved to a low temperature chamber of-10 +/-2 ℃ for 24 hours. Then the mixture is moved to a high temperature of 70 +/-2 ℃ and kept for 24 hours. The cycle lasted 168 hours. I.e., four times at high temperature and three times at low temperature, and finally removed from the experimental box and kept at room temperature for two hours. Four humidity cards were then removed from each unit pack. And then, the test is carried out according to the method for obtaining the data in the table 1, and the humidity indicating device accords with the high-low temperature test.

Table 3

(III) high-low temperature circulation: referring to Table 4, three unit humidity indicating devices were placed in a low temperature chamber (-20. + -. 2 ℃ C.) for 24 hours and placed at a high temperature (70. + -. 2 ℃ C.) for 24 hours. The cycle lasted 168 hours. The total is four times the high temperature and three times the low temperature. Finally removed from the experimental box and kept at room temperature for two hours. Four indicator cards are then removed from each unit package. The test is carried out according to the method for obtaining the data in the tables 1 and 3, and the experimental result shows that the humidity indicating device conforms to the high-low temperature cycle test.

Table 4.

Claims

1. Humidity indicating device, including shell, humidity indication carrier, its characterized in that: the shell is made for environmental protection plastics, the shell comprises epitheca, inferior valve, epitheca, inferior valve are inlayed each other and are detained together, humidity indication carrier presss from both sides the inside tight between epitheca and inferior valve, be equipped with a plurality of humidity indication area on the humidity indication carrier, drip the humidity indicator that has the difference on the a plurality of humidity indication area respectively, be equipped with the bleeder vent on the shell, the inner chamber intercommunication of bleeder vent and shell, the top of shell is equipped with humidity indication observation window, the quantity and the position of humidity indication observation window are corresponding with humidity indication area.

2. A humidity indicating device according to claim 1 wherein: the shell is made of any one of PA66, ABS, PC, PP, PVC, PE and PMMA materials.

3. A humidity indicating device according to claim 1 wherein: the humidity indication carrier is made of blotting paper, and the humidity indication areas are uniformly and horizontally arranged.

4. A humidity indicating device according to claim 1 wherein: the air holes are formed in the upper end side wall of the upper shell and the lower end side wall of the lower shell and are horizontally arranged along the four side walls of the upper shell and the lower shell.