Temporary cover material is used to protect the surfaces of electronic circuit boards from damage during handling or coating. Temporary covering materials are non-flammable, non-polluting, and leave no ionic or corrosive residues. To better understand what temporary covering materials are and the popular types today, let’s follow the following article!
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What is a temporary cover material?
Temporary covering materials are used to protect surfaces from damage during treatment or coating. They are used as a temporary barrier and are then removed from the component or surface after the shielding function has been completed in the manufacturing process. Being able to remove it easily without leaving residue on the surface is one of the key factors when choosing a temporary covering material.
These materials can be used for more than just their initial covering and protection purposes. You can learn more about the potential applications of a temporary cover material and how it improves your manufacturing process.
Common types of temporary covering materials
Temporary covering materials are used under a variety of manufacturing conditions, such as high temperatures during soldering or exposure to coating chemicals during circuit board protection coating spraying. To select the right temporary covering material, consideration should be given to temperature, chemical resistance, adhesion, and curing time. Temporary covering materials are available in a variety of forms, each with unique characteristics to meet these needs.
- Temporary Covering Tape: A temporary masking tape is made up of a thin layer of paper or plastic film combined with an adhesive layer. Adhesive tapes are manufactured in a variety of widths and strengths, making them suitable for a wide variety of applications.
- UV Temporary Covering Materials: UV Temporary Covering Materials are solvent-free, fast-curing materials that can be used manually or automatically to protect the PCB. They are used before convection soldering or as a protective coating on the circuit board.
- Liquid Temporary Covering Materials: Liquid materials, also commonly referred to as peelable temporary coverings, are applied to the surface and allowed to dry into a solid layer of material that can be peeled off after the process. user program. They are often used to protect surfaces from chemicals or abrasion during processing.
- Water-soluble materials: Water-soluble materials are used to protect surfaces from abrasion, chemical treatment, or painting. They are usually applied with a spray gun or brush, which can be easily removed with water after the shielding function is done.
- Melt Materials: Molten temporary covering materials are used with a hot melt glue gun. They are often used in powder coating applications to cover areas that do not require painting. This material is heat-resistant and easily removed after use.
- Rubber-based materials: Rubber-based shielding materials are commonly used in the automotive industry to protect surfaces during painting. These materials are resistant to solvents as well as chemicals and can be used in high-temperature applications.
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How is the temporary covering material removed after use?
After the covering material has completed its function, for example, after soldering or after a protective coating on a circuit board, it is removed. The temporary coating can be removed directly by hand or with tweezers. If the user is using a sealed filtration and wash water recirculation system, be sure to use a coating material that is compatible with the physical filter and the ionic substrate. If foam is seen, it is an indication that too much coating material is being returned to the cleaning system or that it is interacting with flux dissolved in the same rinse water. This problem can be solved by replacing the rinse water with fresh DI water, but a defoamer can also be added as a temporary solution.
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So the article has helped you better understand what temporary covering material is. For all detailed information about electronic components, solder, solder paste, soldering electronic circuits, etc., do not hesitate to contact The Tech for the best advice!