Composition Description of Hot Melt Pressure Sensitive Adhesives II
Plasticizers can efficiently reduce hardness, lower viscosity and improve low temperature resistance of HMPSAs. They can also lower adhesive cost. Two types of plasticizers are used in HMPSA formulations: mineral oils and butene oil. Mineral oil is a mixture containing various percentages of paraffinic, naththenic, and aromatic component. Different mineral oils may greatly affect adhesion performances, particularly for low temperature and high temperature resistance.
Antioxidants are used to prevent or minimize degradation resulted from heat aging, mechanical shearing, and long term storage.
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All the components used in the HMPSA formulations are 100% solid without volatile organic compounds. (Note: mineral oil is also considered as a 100% solid because it does not evaporate or heat loss during production and application.) They are safe, free of fire and explosion concerns, during production, storage, and application. Below are some physical properties of those used components. This article come from hotmelt-zp.com .
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