It's be mainly used for bopp film gelatinizing producing，The tape is mainly used to seal the box, seal the cover and bind the articles, and can also be used as office supplies.
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.
Micro gravure coating application case:
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Light-shielding film, various optical films, materials for lithium batteries, various composite tapes, film films, and protective films. Comma roll coating:
The comma roll coating is characterized by a combination of a blade scraper and a roller scraper. The effect of the thickness of the glue is smaller than that of the blade, the thickness of the coating is easily adjusted, and the high viscosity glue can be applied. When the width is large, it can be adjusted horizontally.
1. The strength and hardness of the comma scraper are high, and the straightness error of the cutting edge is small. The pneumatic fine adjustment mechanism can be used to adjust and control the position of the scraper, and the coating amount control and scraping precision are high.
2. It can coat thicker coating. When coating, the glue flows from top to bottom between the blade mouth and the film. Therefore, the glue can be fully used, and there is basically no waste of glue.
1. The coating quality of the comma roller coating has a great relationship with the operation of each component unit, especially the transmission ratio between the driving motor and the rotating pressing roller is difficult to adjust, which often causes uneven coating and is prone to lateral or Longitudinal irregular stripes. When coating, the glue easily flows out in the gap between the baffle and the drive press roller, and the sealing property is not complete. When coating, it is necessary to manually stir the glue of the glue storage tank. To guarantee
Even distribution of the glue.
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