1. 150m/min high speed has already reached the international most advanced level.
2. Rewind and unwind both adopt double position and equip with semi-automatic to connect paper device, The machine can change the rolls of base material nonstop， It will reduce the waste.
3. When the double sides adhesive tape coat twice, it will effect the quality of products, but the technology of double sides coating meanwhile will solve the questions.
Characteristics of several coating methods -
Hot melt adhesive coating
The coating device mainly heats and melts the solid type glue, and directly sprays the glue on the substrate through the coating die by hydraulic loading. Hot melt adhesive coating is a new technology developed in the past ten years. Hot melt adhesive coating does not require drying equipment and has low energy consumption. Hot melt adhesive is 100% solid rubber component and does not contain toxic organic solvents. Ordinary sizing coatings use toxic organic solvents (such as benzene) to dilute the glue, and the toxic gases caused by them are extremely harmful to the operator.
Hot melt adhesive coating has its unique advantages over conventional size coating. Hot melt adhesive coating is a green and environmentally friendly coating technology. It has high production speed, high efficiency, low cost, small equipment footprint and short investment recovery period. It is an economical investment project and has been widely used in packaging. , medicine, automotive, clothing, electronics and other industries. Hot melt adhesive coating has great market development prospects, and the development ratio of this technology in the market will become larger and larger, and new application fields will continue to emerge.
Squeegee method and application
In the coating process, the glue is often uneven, which requires a certain scraping mechanism to evenly scrape the glue. The scraping mechanism mainly includes a stainless steel scraper, a comma scraper, a scraping bar, a wire scraper, an air jet scraper, and the like.
Common micro gravure precision coating method --
Micro gravure coating:
The coating roller is an anilox roller, and the diameter is generally between Φ20mm-Φ50mm, so it is called micro gravure coating, which is a direction, contact coating method, that is, the rotation direction of the micro coating roller and the film film. The feed direction is reversed and the film is not pressed onto the coating roll by the press rolls. Conventional gravure coating methods, whether direct coating or reverse coating, generally have a back pressure rubber roller and an anilox roller having substantially the same diameter as the rubber. Since the film is pressed between the rubber roller and the anilox roller, there is a possibility that defects such as wrinkles and cracks appear on the coated surface, and the pressure contact points of the two rolls affect the coating quality due to factors such as mechanical and pneumatic pressure.
While micro gravure coating is a contact coating, contact coating means that there is no back pressure rubber roller, and therefore some potential disadvantages due to back pressure roller pressurization are eliminated.
Zhengzhou EAST IMPORT AND EXPORT co., ltd . ( a goulian group of company) a manufacturer and exporter for all kind of packaging machinery , like bopp tape coating machines, bopp tape slitting machines. Bopp tape core cutter, bopp tape core loader etc