The control of the ink scraper in offset printing is a complex process of ink transfer, including ink, plate and paper. In gravure printing, ink scraper it is a mechanical operation, relatively simple, but it has its own unique. Ink scraper requirements must have wear resistance and high efficiency, in order to ensure the high quality of printing, and it must be suitable for the durable and high-speed needs of modern gravure printing. Ink scraper is a sheet used to scrape excess ink from the surface of the cylinder on the printing press, which is divided into metal and non-metal. Ink scraper removal of unpatterned areas of ink is a key point in each printing process.
Core features
1. Corrosion resistance
Ink plastic scraper is made of special materials, not easy to be corroded by chemicals, has a strong corrosion resistance, can be used for a long time.
2. Wear resistance
The surface of the ink plastic scraper is smooth, and the material hardness is high, and it can withstand greater friction and long service life.
3. Good flexibility
The flexibility of the ink plastic scraper is good, so that it can be bent into different angles, suitable for different printing needs.
4. A variety of process requirements
Ink plastic scraper can be used for a variety of printing process needs, such as plate printing, gravure printing, screen printing, flexo printing, etc., the applicability is very wide.
5. Easy to clean
The surface of the ink plastic scraper is smooth, easy to clean, can be used many times, and can be reused after cleaning.
Main materials
1. Metal material
Metallic ink scrapers include stainless steel, copper and aluminum. Stainless steel ink scraper strong corrosion resistance, durable, suitable for scraping heavy ink; Copper ink scraper moderate weight, neat scraping, but not corrosion resistance; Aluminum ink scraper light, good scraping, but not strong enough.
2. Plastic material
Compared with metal ink scraper, plastic ink scraper is light, beautiful in shape and cheap in price. The hardness and elasticity of the plastic ink scraper are moderate, the scraping is relatively neat, and will not damage the printing plate. However, its hardness is low, durability is not as good as metal ink scraper
3. Rubber material
The rubber ink scraper is soft and suitable for printing fragile materials or high-precision printing occasions. The elasticity of the rubber forms a curved printing knife, which can effectively increase the contact area between the printing knife and the printing plate, so that the printing effect is clearer. However, it has low wear resistance and needs to be replaced frequently .
4. Other special materials
- stainless steel: suitable for water-based ink and UV ink, with anti-rust and anti-corrosion function, good wear resistance and toughness .
- carbon steel: coated with nickel material, providing excellent corrosion and oxidation resistance, suitable for printing with corrosive inks and glossy oils
- ceramics: imported high carbon steel material, blade spraying ceramic alloy, good wear resistance, suitable for large workload and not often change the tool.
Applications
Metal ink scraper: usually made of stainless steel or cemented carbide, with high hardness and wear resistance, scraping edge sharp, can effectively scrape off the ink layer, maintain the clarity of printed matter. Suitable for high speed presses and high volume production lines, commonly used in paper printing and packaging printing .
Rubber plastic ink scraper: made of rubber or plastic material, has good elasticity and softness, scraping edge round, can evenly coat the ink layer, reduce scratches and wear. Suitable for more fragile materials, such as film, glass, ceramics, etc., commonly used in label printing and electronic product printing .
Precautions for use When installing
Ensure that the angle between the scraper and the printing plate or coating roller is correct to obtain the best ink control effect. Regularly check the wear condition of the scraper and replace the severely worn scraper in time to ensure printing and coating quality. During use, pay attention to keeping the scraper clean and avoid the accumulation of impurities such as ink and coating on the scraper, which may affect its performance. Different printing and coating materials may require different types of ink scrapers. Appropriate products should be selected according to the actual situation. Add customer cases of using this product in the product introduction. Write a product introduction for ink scrapers suitable for the printing industry. Recommend some excellent sample product introductions for ink scrapers.
Conclusion
In short, as a key tool in the printing and coating industries, ink doctor blades provide reliable solutions for the industry with their advantages of high precision, strong wear resistance, moderate elasticity, convenient installation, and various specifications. Whether in improving printing quality, ensuring coating uniformity, or meeting the needs of different application scenarios, ink doctor blades play an important role. Choosing high-quality ink doctor blades will bring higher efficiency and better product quality to your production and help you stand out in market competition. Recommend some excellent promotional copy for ink doctor blades.
