Why does the PE shrinking machine need to turn on the fan, and the heat shrinking machine will burn

Why is it that at such a high temperature, why are packaged items not affected?

POF film generally contains thermal insulation materials, resulting in the formation of a thermal protective cover when the item is packaged, and the temperature inside is not greatly affected.

Secondly, the packaging process of the goods is mobile, and the conveyor belt enters the heat shrink furnace and then is sent out of the furnace by the temperature-resistant conveyor belt, and the whole process is operated at a uniform speed. Secondly, the heat generated by the heat shrinkable tube is not directly heated to the item, but blown out by a high-power fan, and the whole process can ensure that the heat shrinkable furnace is at a constant temperature.

Guerqi Packaging is a manufacturer of sealing and cutting shrinking machines, with 20 years of experience in the development and production of packaging machinery, all products have passed CE certification, Alibaba strength business certification, you can buy with confidence.

For many customers who have not been exposed to the heat shrinking machine, they may have such a big doubt in their hearts, Gulqi packaging has done a lot of tests, except for frozen fusible products and items with low ignition point, the quality is basically not affected when passing through the heat shrinking furnace.

Heat shrinking machines generally use POF film.

PE film or PVC film is used for heat shrinkable wrapping, and some packaging films will automatically shrink when exposed to heat, and shape according to the shape of the item. The general temperature of the constant temperature shrinkable furnace is 100-200 degrees Celsius, which can be seen to be very high, and the selection of materials is also very high. So why is it that at such a high temperature, why are packaged items not affected?

1. It's not why the machine is shrinking.

2. Your packaging bag will shrink after high temperature, such as: PE bag, PP bag, PO bag, it will shrink when it encounters high temperature.

Hello, the people package for you to answer:

The electrical control of the packaging machine adopts B&R controller PP41, servo drive motor ACOPOS, combined with programming software Automaton Studio, and the design uses the bottle pushing motor as the main drive motor, and the bottle splitting motor and the film cutting motor as the follow-up motor. During each packaging process, the pusher pushes out a group of bottles to complete the packaging once, and the position of the pusher motor reflects the position data of the packaging cycle. In each packaging cycle, the feeding and cutting film motor, the bottle splitting motor 1, 2 have a one-to-one corresponding data relationship with the position of the bottle pushing motor, and the action of the machine is controlled according to the corresponding data.

CAM electronic cam technology is used to realize multi-axis synchronous operation, and the spindle position movement is coupled from the shaft, so as to achieve the purpose of packaging.

Shanghai People's Packaging Co., Ltd. (formerly People's Instrument Factory) is a professional production"Sea Whale brand"Stainless steel vacuum packaging machine SH-RMBZ, vacuum inflatable packaging machine, powder vacuum packaging machine, Shanghai vacuum packaging machine, people's packaging machine, food vacuum packaging machine and other food machinery enterprises.

Since 1982, our company launched the vacuum inflatable packaging machine for the first time in China, the products have been reformed and innovated several times, and now they have developed into five series of products such as various packaging machines and sterilization equipment, and have become the representative backbone enterprises with the largest production variety, the highest sales volume, the largest sales area and the widest application field in China's vacuum packaging machinery industry. It is one of the main drafting units of the national standard for general technical conditions of vacuum, vacuum inflatable packaging machine, and has been awarded"Quality products of the Ministry of Commerce"、"High-quality products in Shanghai"and issued by the Shanghai Municipal Economic Commission and the Shanghai Municipal Bureau of Technical Supervision"Shanghai customer satisfaction enterprise"The title was awarded by the China Machinery Industry Federation and the China Mechanical Engineering Society"05 Third Prize of China Machinery Industry Science and Technology Award"。

The company has obtained IS9001:2008 quality management system certification.

In the face of fierce competition in the market, the company continues to improve product quality and constantly develop new varieties, and strive to meet the requirements of the market and the majority of users.

The film is a shrink film, which shrinks when exposed to heat, which is related to the material itself.

Look at what kind of box it is, see how long the heat shrinkable film takes, it should be fine when the time is short, if the time is long, it will not only bake the film for a long time in a high temperature environment, but also bake the surface of the box.

Therefore, the temperature of the heat shrinkable tube can be adjusted to the bottom point, and it doesn't matter if it stays in the machine for a long time, so that the film can be kept intact and beautiful when shrinking, thank you!

After the PE shrink film passes the shrinking machine, the shrinkage effect is not good, and the packaging is very loose because the cooling time is insufficient, so it should be stored in a cool place.

The shrinking machine uses shrink film to wrap the outside of the product or package, and after heating, the shrink film shrinks and wraps the product or package, fully displays the appearance of the item, improves the marketability of the product, and increases the beauty and sense of value. The items packed by the heat shrink machine can be sealed, moisture-proof and pollution-proof

The bottles are divided and then wrapped, and then they enter the hot tunnel for heat shrinking. PE film POF film shrinks when heated.

Reasons for the poor shrinkage effect of PE shrink film:

The quality of the membrane is too poor. If the quality of the shrink film is too poor, then the shrink effect must be bad, either there are wrinkles or it will break.

The furnace channel is not the right size. There are two situations in which the size of the furnace channel of the heat shrink packaging machine is not suitable, one is that the furnace is too large, and the other is naturally that the furnace is too small. If the furnace is too large, the temperature received by the product is relatively small, and most of the heat is three, so the heat shrink packaging machine needs to be increased to a very high temperature to shrink better.

If the furnace is too small, the film will stick to the inner wall of the furnace and be burned.

The temperature is not enough. The working principle of the heat shrink packaging machine is actually relatively simple, that is, the matching of speed and temperature, when the temperature is low, the surface of the product will be wrinkled. If the temperature is high, the film will be scalded.

As a rule of thumb, the temperature of about 130 degrees can be used for POF film, and the temperature of about 170 degrees for PE film is more appropriate.

The speed does not match. The user shrinks the product differently, the required conveying speed is also different, this speed does not have a standard value for reference, mainly the customer needs to test when using, generally after several tests, there will be a better effect.

The shrink film of the shrinking machine does not have punctures. This situation is mainly for the situation that the POF film is fully packaged, when the user's product needs to be fully packaged, some small holes must be pierced on the surface of the shrink film, so that the gas in the film can be emitted through the small holes during shrinkage, otherwise the gas is in the film, and the film will bulge up.

From your description (our packaging form, just like the style of bottled pure water (a group of 12 bottles), the kind of PE packaging outside, the size of the packaging we have always been fixed, this packaging found that the shrinkage effect is very poor, the shrinkage effect is still poor after the temperature in the furnace is adjusted to 185, the temperature in the furnace was checked with an infrared thermometer, and the temperature in the furnace was consistent with the digital display results, and the speed of the furnace was lowered, and the effect was better,) analysis; Check the temperature in the furnace cavity may have a group of heating elements burned (or the power is reduced), I personally think that there will be a certain error when checking the temperature in the furnace with an infrared thermometer; You should use a clamp ammeter to check the current of each group of heating elements to see if it is normal.

If the temperature is not enough, or the speed of the conveyor belt is too fast, you can try to increase the temperature of the conveyor belt, or increase the temperature, and you can do it.

The shrinkage rate of the PE film itself is not strong, and the power of the shrinking machine is larger, and the shrinking furnace is longer. PVC film can be used with a small shrinking machine. It depends on the size of the item.

PE heat shrinking machine air cooler maintenance has the following points, Qingdao Youchuang packaging technology:

Eliminate whether the control signal is electric, control the fan switch is on, the fan is not energized, check the control line, need professionals to operate, to prevent the risk of electric shock.

The control circuit is normal, the fan is energized, the fan does not rotate, replace the fan or replace the starting capacitor of the fan.