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Transfer Printing Control Theory Of Climate And Environmental Conditions (b)

Given these constraints, sealed system helps reduce operational variables, to allow continuous operation of the machine, it is suggested Print Plant to use them.

Temperature control Environment more stable, more convenient and efficient control Pad Operation, it looks simple. If you strictly follow some simple rules, many common problems can be self-resolving.

Control the ambient temperature is the most simple air-conditioned room at the printing operation and other temperature control methods is not so easy a. The machine should stay away from ventilation, direct sunlight, and avoid the import and export hairdryer. Whether it is not air-conditioned room, the machine temperature should not be on the large room.

Use a hair dryer If you can not effectively control the environment, then other means of adjusting the environment to make it applicable to the same printing conditions is feasible. Common tool is a variable speed / variable temperature blowers, more generally, it is called a hair dryer. It can be adjusted to fit the environment the state of press work. When the temperature is low, the ink in Solvent Volatile not fast enough, at this time need air flow or hot air blown on the pad to change the header or substrate to the surrounding environment so that the normal printing. Sometimes, just for blowing air, the air flow to the printing head or printing material, through tests to determine the velocity, temperature and air flow direction. In general, when environmental conditions meet the printing requirements can stop hair was.

Temperature of the printing operation of factors other than

We have to consider the temperature of the printing operation and other factors beyond the impact. For example, after the printing prepress or printing of materials and components used in the storage of the environment is very important. These devices are often stored in large warehouses, large storage and this is usually very little heating in winter, temperature close to 0 . These devices will be shipped to warm when the printing operation of plant, equipment, surface temperature varies widely, forming a layer of condensation on its surface membrane (normally invisible), in such circumstances, very difficult to print out beautiful images. To avoid such problems, pre-press is best to place these devices in the printing shop for a few hours, so that their temperature reaches a steady state. Immediately after completion of storage

printing printing products, printed materials susceptible to temperature effects. If the printing ink consists of two parts, not completely cure the ink printed materials before the surface temperature should not be reduced to below 15 , otherwise the ink will stop curing, if this situation occurs, the operator can no longer recover on curing operation.

To control air flow, so press away from the ventilation device, for example, and can not be placed under the exhaust pipe in the air. If too much air flow around the machine will be to promote the solvent evaporation rate, high temperature and high air flow will increase this impact. Irregular rapid drying ink will result in some ink remain in the etching plate, or printing heads, image blurring caused by printing.

Ventilation not only caused by solvent evaporation, but also the dust pollution caused by printing, in particular the relatively large size printed image or images to be printed several times, the increase in density in the case, the dust pollution more acute. Packed in cardboard boxes because the substrate where there are dust in the air is dry dust easily adsorbed to the surface. The more air flow around the machine, the greater the chance of dust contamination. Now need to clean the building's environment, clean and good condition the only way to avoid this problem. Ideally the ground with a vacuum cleaner with a broom will make the dust cleared for flying. If possible, avoid using cardboard boxes can be lined on the floor Plastic Bag, wipe all surfaces with a damp cloth.

Control the humidity and static electricity

Many of the traditional screen printing are all aware of the screen printing of the platform the pot boiling, not only for coffee, but also to produce steam. Electrostatic dry air in a major problem, dry air can not stop the printing operation in a static phenomenon. In particular, produce large amounts of electrostatic printing, in particular, silicone rubber pad head, printing head measurements found that the static electricity generated from more than 2 million volts. Imagine in plastic mold system memory in such a large component of static, how the problem will occur.

Goods in India on a static printed image manifests itself in fluff, at this time do not think that is the printing version of the etching depth is large caused by the printing version of the etching depth is too large can lead to the same result, because the cure is not always is less obvious. Reduce the static electricity is the easiest way to slow down the speed of the machine's operation, especially in the lift from the printing plate on the head and in the substrates on the printing part. Operators have to find ways to printing device ground, which help reduce static electricity, but not always effective. Some people use the method boils water to eliminate static electricity, but this method will often destroy the chemical properties of ink. The best way is to configure the air-conditioning control device that is temperature and humidity of the printing shop.

Humidifiers and dehumidifiers can solve some problems, but they must be able to automatically adjust, or you will fall into the volatility of changing environmental conditions.

Static control is a major problem, static elimination device itself is also a great play on the differences, mainly dependent on environmental conditions. These devices create a conductive environment are based on the principle of eliminating static electricity produced.

To film or plane body from ionizing bars can play through the electrode under the effect of eliminating static, flat surface to the distance between electrodes is critical, because the distance will produce a stable electrostatic field.

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