According to Yashilin's market survey, the current constant temperature and humidity test chamber indicators at home and abroad are basically 30% to 98% RH or 20% to 98% RH. At the same time, how many customers will ask, humidity can be controlled to 10% ~ 98% RH. 1. Because the relative humidity is directly related to the temperature, for the same absolute moisture content, the higher the temperature, the smaller the relative humidity, such as the absolute moisture content is 6g / kg (refers to six kilograms in a kilogram of dry air Water vapor), when the temperature is 30 ℃, the relative humidity is 20% RH, when the temperature is 7 ℃, the relative humidity is 90% RH, when the temperature drops below 5 ℃, the relative humidity exceeds 100%, in the cabinet There is condensation. 2. Low temperature and low humidity are relatively difficult to control, because the absolute moisture content at this time is very low, and sometimes it is lower than the absolute content in the atmosphere. It is necessary to dehumidify the air that is popular in the cabinet and make the air change. It must be dry. The principle of cooling and dehumidification is to add a group of cooling tubes in the air conditioning room of the cabinet. When the humid air passes through the cooling tube, the relative humidity will reach 100% RH. The cooling tube has dew condensation, which makes the air dry. However, such a dehumidification method can theoretically reach a dew point temperature below zero, but when the surface temperature of the cold spot reaches 0 ° C, the water droplets condensed on the surface of the refrigeration tube will freeze, which affects the heat exchange and reduces the dehumidification ability And because the cabinet cannot be sealed completely, the humid air in the atmosphere will infiltrate into the cabinet, causing the dew point temperature to rise. On the other hand, the flowing humid air only reaches saturation at the moment of contact with the cold pipe to fold out the water vapor. This dehumidification method makes it difficult to make the dew point temperature in the box below 0 ° C. The lowest dew point temperature actually reached is 5 ～ 7 ℃, dew point temperature 5 ℃ is equivalent to absolute moisture content 0.0055g / kg, and the temperature corresponding to 20% RH is 30 ℃. If the required temperature is 20 ° C and the relative humidity reaches 20% RH, the dew point temperature at this time is -3 ° C, and dehumidification is very difficult. 3. The constant temperature and humidity test chamber only needs to spray water vapor into the air to achieve high temperature and high humidity for humidification. The people of Yashilin use the entrepreneurial spirit of "Speak, do, do better!" To lead the way forward, becoming a bridge between Yashilin and all Yashilin customers. Social commitment.
Tipping Machine Tipping Machine,Tipping Film,Automatic Tipping Machine,Transparent Tipping Film, semi auto tippin machine DongGuan FeiYang Packaging Machinery Equipment Co., Ltd , https://www.feiyang-machinery.com
Tipping machines,
Our Tipping machines is used to tip the Tipping Film on both end of shoelace, or bag handle rope lace. there is fully Automatic Tipping Machine. We have max 1.5meter, 2meter, 2.5meter according to customer demand. We also have semi auto Tipping Machine, which have no length limited, but need one operator to work.
The advantages of the tipping machines,
1, the processing temperature can be adjusted automatically, normally in 50°to 60°.When reaching the set temp, it will be fixed automatically.
2, the main motor has the overload protection function.
3, the machine is equipped with special safety device and the base of the mold is made of high quality casting, so, the mold can be used for a longer life.
4, strong structure and safe operation and good materials and good brand electrical parts, technically and mechanically, the whole machine can be used for at least 20 to 30 years without any problems.
5, the machine has the function of programming protection, under which function the machine parts will not be easily broken because of reverse or wrong power connection. When power cable is wrongly connected, the machine will not run.
6, the machine will stop working automatically when there is no tipping film feeding, under which function the machine idle running will be avoided.