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SINCE 1989

The “Cai Da” brand has become a well-known soft packaging printing machinery brand in the same industry.

CHAOZHOU CAIDA PACKING MACHINERY CO.,LTD.

Founded in 1989, Chaozhou CaiDa Packaging Machinery Co., Ltd. is located in the famous China's first printing and packaging town - the town, covering an area of more than 10,000 square meters. Through the unremitting struggle of the 30-year-old color people, the “Cai Da” brand has become a well-known soft packaging printing machinery brand in the same industry. It is a high-tech

  • 1989

    Year

    Founded in

  • 80

    +

    Country

PRODUCTS SHOW

CDRP-PIONEER

CDRP-PIONEER

CDRP-FLYING

CDRP-FLYING

High-speed dry laminating machine

High-speed dry laminating machine

High-speed dry laminating machine

High-speed dry laminating machine

Checking Rewindetd

Checking Rewindetd

High Speed Longitudinal Slitting Machine

High Speed Longitudinal Slitting Machine

Electronic shaft high speed Computerized Auto-overprint rotogravure printing Machine

Electronic shaft high speed Computerized Auto-overprint rotogravure printing Machine

Standard Computerized Auto-Overprint Rotogravure Printing Machine

Standard Computerized Auto-Overprint Rotogravure Printing Machine

CONTACT US

Address: Caida industrial area, Daxia road, Anbu town, Chaozhou city, Guangdong province, China

Tel:（0768） 592 0820 / 592 0309

Fax:（0768）592 0306

P.C: 515 638

Website: http: //www.chinacaida.com

E-MAIL : caidasales@163.com

Chaozhou CAIDA packing machinery co.,ltd.

NEWS CENTER

2021/11/16

Do gravure presses need maintenance?

Gravure printing press is one of the equipment with high utilization rate in printing plant. In order to ensure the normal operation of the printing press, daily maintenance is essential and necessary. Let's briefly talk about the daily maintenance of the machine from several aspects. 1、 Static maintenance Static maintenance of printing press refers to the maintenance of the machine when the machine is at rest. 1. Formulate machine maintenance rules and regulations. The maintenance of the offset press should be carried out according to the operating instructions of the machine. Such as regular oil change, filter cleaning, regular inspection of machine accuracy, etc. 2. Strengthen the maintenance of important parts. Gears, cams, sprockets, rollers and bearings are important parts of the printing press. Their maintenance should be different from other components because their accuracy changes will affect them. Springs are used in force balancing mechanisms in many parts of the machine. Their working quality directly determines the matching accuracy of moving parts. The spring must have sensitive elasticity. Aeroelasticity and unrecoverable plastic deformation are very important to the work of the spring. Disadvantageous. If the above problems are found, the spring needs to be replaced immediately. Harm of solvent residue in printing process 3. Carry out technical transformation and strengthen machine maintenance. Machine maintenance requires the convenience of machine maintenance in machine design. However, due to the complexity of the printing press, it is obviously impossible to take every factor into account, and the content of machine maintenance will change with the change of the environment. Therefore, on the premise of not affecting the normal work, improve the structures that are not conducive to machine maintenance. Dynamic maintenance Dynamic maintenance of printing press refers to the maintenance of the machine when the printing press is in a dynamic state. Machine static maintenance is the premise of machine dynamic maintenance. In turn, the dynamic operation of the machine can detect the level of machine static maintenance. Dynamic maintenance of the machine is very important. The following analyzes the main contents that should be maintained under machine dynamics from several aspects. 1. Machine readiness detection. The readiness of the machine can be checked by jogging or cranking. For example, tools and other items are stuck in the machine; Whether the printing plate is installed correctly. If it is inappropriate, it may damage the printing plate or make it difficult to find the rules; Whether the blanket is installed correctly. If it is not appropriate, it may cause printing failure and damage the machine in serious cases. 2. Lubrication status of the machine. First, observe whether the oil circuit of the machine is unblocked through the oil pointer. If there is no oil in the oil mark or the position of the oil mark is not clear, stop and carefully check the oil circuit for oil leakage. Although the oil leakage of the machine is easy to observe, it is difficult to find the cause. For sliding bearings and other machines, low speed is not conducive to their lubrication, especially inching or low-speed operation has a greater impact on their lubrication. Therefore, before carrying out such operations, the idlers should be lubricated first, which is also the primary task before going to work every day. The oil pump of some machines is driven by the main engine, so when it reverses, the oil circuit will not fill, but will suck the oil in the oil circuit back to the oil tank. This is very dangerous, so the opposite should be avoided. The lubrication of some important parts can also be detected by the temperature of nearby metal. If the temperature is too high, there is a problem with lubrication. 3. Impact during machine operation. The smaller the impact on the machine during operation, the better the printing effect and prolong the service life of the machine. Reducing the printing pressure (pressure in a broad sense) is an important condition to ensure the smooth operation of the machine. On the premise of ensuring the printing quality, the smaller the printing pressure, the better. Reducing the speed of the machine is another important condition for reducing the moment of inertia of the machine. The lower the speed of the machine, the smaller the moment of inertia, so the machine should not run at high speed all the time.
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Do gravure presses need maintenance?
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2021/11/16

Development trend of gravure printing

1. Large and medium-sized packaging gravure printing enterprises will be the mainstream, especially cigarette packaging gravure printing enterprises will pursue economies of scale, high quality and high-tech content. 2. Due to environmental protection and health reasons, food, medicine, tobacco, wine and other industries pay more and more attention to the environmental protection of packaging materials and printing process, and gravure printing enterprises pay more attention to the environment of printing workshop. Environmentally friendly ink and varnish will be more and more popular. Closed doctor blade system and rapid replacement device will be popularized and applied. Gravure printing machines suitable for water-based ink will be widely used. 3. The independent driving technology of gravure printing machine and taking electronic shaft transmission as the technical platform will realize the comprehensive upgrading of gravure printing machine. All gravure printing machines for various purposes will adopt electronic shaft transmission. Electronic shaft drive and registration systems are mainly from Japan and Europe, but they can only be used in a small number of domestic gravure presses. The development of domestic overprint system will be the key to the comprehensive upgrading of domestic gravure press. 4. The proportion of wide gravure press and paper gravure press will continue to increase. On the one hand, the decorative printing (mainly wood grain paper printing) and carton gravure printing market will grow rapidly. On the other hand, the range of flexible packaging gravure printing machines will also increase, and the number of large format gravure printing machines will increase rapidly. Gravure printing machines for paper and paper-based composites (wood grain paper, cigarette label, aseptic packaging, gift wrapping paper, etc.) will grow rapidly. 5. The processing of gravure production line will be more diversified and the functional configuration will be stronger and stronger, such as glazing, die cutting, cross cutting, soft standard cutting, etc. Accordingly, gravure printing machine management system and remote technical support system will be more and more adopted. At the same time, in order to meet the needs of personalization, all parts from unwinding, printing to line processing and winding will be modularized, of which the most important will be gravure trolley or gravure and flexographic printing interchange trolley.
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Development trend of gravure printing
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2021/11/16

Common problems in gravure printing

The faults in gravure printing are mainly caused by printing plate, ink, substrate, doctor blade, etc. （1） Uneven shade of ink The phenomenon of periodic ink color change on printed matter. The troubleshooting methods are: correct the roundness of the plate cylinder, adjust the angle and pressure of the doctor blade, or replace the doctor blade with a new one. （2） Blotting, paste and fuzzing The image of printed matter is level and blurred, and the edges of text and text appear burr. The elimination methods include: removing the static electricity on the surface of the substrate, adding polar solvent to the ink, appropriately increasing the printing pressure, adjusting the position of the doctor blade, etc. （3） Blocking plate The phenomenon that the ink dries up in the net hole of the printing plate, or the net hole of the printing plate is filled with paper wool and paper powder is called blocking. The elimination methods are: increasing the solvent content in the ink, reducing the drying speed of the ink, and printing with paper with high surface strength. （4） Ink overflow The appearance of spots on the field part of printed matter. The elimination methods are: add hard ink blending oil to improve the viscosity of ink. Adjust the angle of the doctor blade, improve the printing speed, and replace the deep screen printing plate with the shallow screen printing plate. （5） Scratch There are traces of doctor blades on the printed matter. The elimination methods are: printing with clean ink without foreign matters. Adjust the viscosity, dryness and adhesion of ink. Use a high-quality doctor blade and adjust the angle between the doctor blade and the printing plate. （6） Pigment precipitation The phenomenon of lightening the color on printed matter. The elimination methods are: printing with ink with good dispersion and stable performance. Add anti condensation and anti precipitation additives to the ink. Fully roll and often stir the ink in the ink tank. （7） Sticky dirt Ink stain on printed matter. The elimination methods are: select the ink printing with fast volatilization speed, increase the drying temperature or appropriately reduce the printing speed. （8） Ink falling off The ink printed on the plastic film has poor adhesion and falls off by hand or mechanical force. The elimination methods are: prevent the plastic film from being damp, select the ink printing with good affinity with the plastic film, and re treat the plastic film to improve the surface tension.
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Common problems in gravure printing
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Address: Caida industrial area, Daxia road, Anbu town, Chaozhou city, Guangdong province, China

底部版权左侧

Time of issue:2020-07-08 00:00:00

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