Characteristics of Hot Melt Coatings

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Release time:2021-09-26

【Summary Description】 The melt processing of thermoplastic marking paint is an extremely important aspect of thermoplastic marking projects. The quality of the marking is greatly related to whether the melt is fully melted. The most important factor in the melt processing is mastering and controlling the viscosity of the molten system. However, it is difficult to measure the flow performance of a molten system with a temperature above 200 degrees using viscosity; usually, temperature is used as a reference. The relationship between the temperature and viscosity of the paint produced by manufacturers varies greatly. Therefore, the melt viscosity has a significant impact on the melt processing of thermoplastic marking paint, such as the line shape, thickness, and appearance of the coating during construction. For example, in the construction of planed wood, if the melt viscosity of the paint is low, the marking line is prone to flow during application.

  Road Marking Construction CoatingManufacturer:Thermoplastic CoatingHow important is the melting process?

  The melting process of thermoplastic road marking coating is an extremely important part of the thermoplastic marking project. The quality of the marking is greatly related to whether the melt is melted. The most important aspect of the melting process is to master and control the viscosity of the molten system. However, it is difficult to measure the flow performance of the molten system with a temperature above 200 degrees, and usually, only temperature can be used as a reference. The relationship between the temperature and viscosity of the coatings produced by manufacturers varies greatly. Therefore, the melt viscosity has a significant impact on the melting process of thermoplastic road marking coatings, such as the line type, thickness, and appearance of the coating during construction. For example, during planing construction, if the melt viscosity of the coating is low, the marking is prone to flow during construction. If the melt viscosity is too high, the marking is prone to elongation. If the melt viscosity is appropriate, a good construction line type can be achieved.


Reflective Thermoplastic Road Marking Coating


  Road Marking Construction Coating Manufacturer: What are the reasons for the cracking of thermoplastic coatings?

  The main reasons for the cracking of thermoplastic coatings are as follows:

  Base cracking: Before applying the coating, the base layer needs to be sanded. If the base layer is not properly treated, cracks will appear in the putty layer when construction begins, and the coated surface will also be uneven. Insufficient time intervals can lead to issues. Currently, the construction technology for fireproof coatings adopts layered treatment. The base layer can be treated first, followed by the first primer. If the thickness is insufficient, a second coating is applied with a time interval of 48 hours. After the coating dries, it needs to be coated again. Even if the interval is insufficient, cracks will occur. When the temperature is too high or too low, the application of thermoplastic coatings needs to fully consider the surrounding environment. In high temperatures, the already applied coating film may crack due to dehydration. In low temperatures, the wall surface may also crack due to insufficient film-forming temperature.

  Road Marking Construction Coating Manufacturer: Does the thermoplastic coating used for road marking harm the environment?

  Analyzing the dissolution of thermoplastic coatings, the gases released from the resin in the coating can irritate the respiratory system and may have certain toxicity. Although some chemical substances have some hazards, it is mainly a matter of intake amount. Wearing protective glasses and masks can provide some protection. However, road marking construction is generally outdoor work, so the impact is not significant.

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