What are the auxiliary materials for sealing strips?
2021-11-12
Skeleton: Skeleton plays a supporting and clamping role in the sealing strip. The most commonly used skeletons are metal belt skeleton and steel wire connected skeleton. Metal skeleton can be divided into punching, rolling and flat plate types, and materials include low carbon steel, aluminum and aluminum magnesium alloy. Structurally, it can be divided into single bridge, double bridge, stretching, symmetrical and asymmetrical types to meet the needs of different assembly processes such as manual, hammering and rolling fixtures. In recent years, lightweight and good followability skeleton have developed rapidly.
Plush fluff: usually made of polyester fibers and nylon fibers with a fineness of 3-4D, mostly black in color. In recent years, colored fluff has also been favored and applied.
Coating materials: Coating materials are divided into polyurethane and silicone resin, which have good wear reducing effects. Most traditional coatings are organic solvents, which pollute the environment. The recently launched water-based coatings not only have good appearance, but also can partially replace flocking, which has a good effect on reducing friction coefficient and is the development direction of coating materials.
Adhesive: It is a non sulfurized butyl adhesive that can maintain its plasticity and bonding strength for a long time. It plays an auxiliary sealing role in the clamping parts of door frame strips and luggage compartment sealing strips. Nitrogen filled hot melt adhesive has good sealing effect and can be applied to some special requirements.
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