1. Automatic paper feeder: The precise design of the feeder feeder enables smooth feeding of thick and thin paper. It adopts a stepless speed change device and is equipped with automatic edge control to adapt to different paper feeds. Sophisticated wind head, it is very convenient to adjust the relative position of the wind head and the paper stack during operation. The unique non-stop paper feed device, which is equipped with an auxiliary table, can replenish the paper while feeding it to ensure continuous production.
2. Powder removal device (optional combination): adopts two-stage powder removal structure of powder sweeping and pressing powder, the paper passes through the conveyor belt by the brush roller and the brush sweeping powder, so that the dust on the surface is sucked away by the suction fan, and then passes through the electric heating After the pressing roller is rolled, it effectively removes the dust attached to the paper during printing. In addition, the tightly arranged design of the conveyor belt combined with the high-efficiency suction prevents the paper from being displaced or misaligned, so that the paper can be accurately delivered to the nip of the host.
3. The hard chrome composite roller of the host is equipped with an electric heating system and an automatic temperature control device to make the temperature distribution even. The design of the large-scale composite roller increases the pressing surface: the diameter of the electric heating roller is 420mm, and the inner wall of the roller core is round, so that the roller is not biased and the heating surface is uniform; the diameter of the pressing rubber roller is 360 mm, which ensures the smooth pressing of the OPP film. Stable operation. The hand pressure hydraulic cylinder controls the compound pressure, which can balance the pressure of the left and right rollers. The high-precision hard chrome plated mirror heating roller cooperates with the high-performance pressing rubber roller to perfectly realize the hot laminating process.
4. The coating oil head is controlled by imported frequency converter. The glue roller is subjected to high-precision grinding and special balancing treatment on the inner wall to more effectively maintain the stability of the coating amount. The coating and metering hard chrome rollers manufactured by high precision The barrel ensures uniform coating amount and achieves precise coating effect. At the same time, two sets of oil pumps and stainless steel oil tanks are standard, suitable for the use of water-based and oil-based glue. It adopts DC motor pressure film coating device, which is stable, fast and easy to operate.
5. The film unwinding shaft adopts magnetic powder brake to maintain stable tension, and the unique pneumatic film stretching device ensures the pressure
1. The product to be constructed must be straight. Handle uneven paper with "ruffled edge" and "tight edge" phenomena. Paper with "lotus edge" can be baked, and paper with "tight edge" can be hung to dry.
2. Be sure to wait for the blot to dry before laminating, otherwise it will cause blistering or hair pulling.
3. Spray as little powder as possible during printing, otherwise it will cause emptying and bubbling at the powder pile. Before spraying the film, the powder should be disposed of. If the number of prints is large, the powder can be hung to remove the powder. If the number of prints is small, the powder can be wiped manually.
4. Attention should be paid to the direction of the paper strands, especially thick paper, to reduce the curling of the paper due to rolling and stretching.
There is also: the temperature is generally controlled to 40 ~ 60 ℃. Too high a temperature will deform the paper and film, causing the product to curl, but not too low, otherwise it will cause insufficient viscosity. The temperature of coated paper should be slightly lower than that of offset paper.
Rotary laminating machine is to apply plastic adhesive to the plastic film and print it with paper as the substrate, and then press the rubber roller and heating roller to form a product of paper and plastic. The printed product coated by the laminating machine has a thin and transparent plastic film on the surface, which makes the surface smoother and brighter, which not only improves the gloss and fastness of the printed product, but also prolongs the service life of the printed product. To waterproof, anti-fouling, wear-resistant, fold-resistant, chemical corrosion and other protective effects.
1. The rotary laminator does not start: the input wire is disconnected, the power cord is reversed, and the voltage is insufficient.
2. Inaccurate temperature measurement: thermocouple, temperature controller. Whether the installation is incorrect and damaged.
3. The working vacuum does not come up: the gas path is blocked, the hand valve or solenoid valve is not closed, the vacuum pump motor belt is loose, and the vacuum gauge is damaged.
4. The main power switch trips: leakage of the input wire on the top of the heating box, leakage of the distribution box, external wires on the equipment, leakage of the motor, etc.
5. The film is not in place: the vacuum is not enough, air leakage, temperature is not enough, the film is too thin, the workpiece is pasted with other materials, the concave depth of the workpiece exceeds the film lift, the suction time is too short, the film is not lifted, the workpiece distance Too close.
6. The surface of the overlaid workpiece has folds and is not smooth or the corners cannot be wrapped: the film is not straightened, the quality of the film is not good, the workpiece is not well polished, the glue is sprayed too much, and the mold below the workpiece is too low.
7. The film is pulled down when the suction is not reached: whether the solenoid valve or hand valve is open.
8. Breaking phenomenon: the temperature is too high, the heating time is too long, the film quality is not good, and there is no heating.
The operation of the hot laminating machine includes three parts: gluing, drying and hot pressing. The operation is higher. The advantage is that the quality of the finished product is reliable. Its fatal disadvantage is that the oily glue will produce gases that affect human health during processing. So this technology At present, it has been completely banned in developed countries such as Europe and the United States. Water-based adhesives are more environmentally friendly than oily ones, and their relative oily costs are higher.
Scope of application of hot laminating machine: suitable for color printing, packaging paper, soft sheet, soft rubber plate and other lamination (over film), making its surface bright, colorful and waterproof. Water-based and oil-based dual-purpose machines can be customized according to user requirements.
Detailed description of hot laminating machine:
1. The base, wall plate, etc. are made of cast iron, never deformed, to ensure that the accuracy will not be affected during the use and repair and replacement of parts.
2. The glue roller and the glue-limiting roller are manufactured with precision. The roller surface concentricity error is controlled within 0.01mm to ensure even glue application and save glue consumption.
3. The hot composite steel roller is processed by mirror surface treatment, and the finished film is excellent.
4. Electronic automatic constant temperature device.
5. Unique design of hydraulic system, precise and stable. It is equipped with a roll paper feeding device, which can be applied to the compounding of roll materials.
Since solvent-based coatings are so harmful, why is there still such a large market? The following reasons more or less determine the reason for its existence.
First, the laminating machine using solvent-based adhesives has been used for many years, the development of the equipment has been very mature, and the laminating accuracy is guaranteed. These machines are generally not easy to break, maintenance is not complicated, and have accumulated a lot of production in long-term use And maintenance experience, many manufacturers are reluctant to eliminate such solvent-based laminators that are still useful.
Second, the solvent-based coating process has been popularized for decades, the technology is mature, and the product quality is guaranteed. Many companies and technicians are reluctant to replace a skilled process technology with a technology that they are not very familiar with.
Third, in terms of cost, solvent-based laminators are still relatively cheap. For printing companies, cost savings is to win profits.
Fourth, although the laminating process of the water-based laminating machine improves the environmental problems in the production process and avoids harm to the operator's body, it still has many defects compared with the solvent-based laminating process. For example, the product quality is difficult to make Satisfied etc.