The role of PUR hot melt adhesive used in hot melt adhesive dispensing processing
Hot melt adhesive dispensing processing is mainly used for sealing and bonding of mobile phones, notebooks, mobile phone shells, mobile phone screens and other electronic products. Not only waterproof and sealed, but also the products processed by dispensing have good shockproof, dustproof, adhesive and insulating properties. PUR hot melt adhesive is a kind of electronic glue, commonly used in notebook and mobile phone screen bonding.
Hot melt adhesive dispensing processing is mainly used for sealing and bonding of mobile phones, notebooks, mobile phone shells, mobile phone screens and other electronic products. Not only waterproof and sealed, but also the products processed by dispensing have good shockproof, dustproof, adhesive and insulating properties.PUR hot melt adhesiveIs a kind of electronic glue, commonly used in notebook and mobile phone screen bonding.
The role of PUR hot melt adhesive used in hot melt adhesive dispensing processing:
1. Bonding: The pur hot melt adhesive used in the hot melt adhesive dispensing process is applied to the screen bonding of mobile phones. It can be coated with 0.2mm thin line tape. This 0.2mm thin line can ensure sufficient bonding strength. After bonding, it can also play a certain shockproof effect. After bonding, the hot melt adhesive also has a certain degree of flexibility to ensure that the internal core is not affected. Only after these gaps are closed, the phone can be used in the external environment to avoid being wet by rain, which will
2. Insulation: The polyurethane hot melt adhesive used in the hot melt adhesive dispensing process has good insulation properties, which can effectively reduce leakage and electric shock caused by humid air or other reasons.
The advantages of PUR hot melt adhesive for hot melt adhesive dispensing instead of processing:
1. Good weather resistance. Hot melt adhesive dispensing has irreversible properties after curing. It will not change due to changes in ambient temperature during use, and it will always maintain the hot melt adhesive dispensing state after processing.
2. High toughness, strong initial viscosity, good permeability and affinity.
3. Under the same conditions, the bonding strength of hot melt adhesive is 40-60% higher than that of other types of adhesive, which reduces the amount of adhesive and saves a certain cost.
4. Good impact resistance and good adhesion to various substrates.
Pur hot melt adhesive for hot melt adhesive dispensing is a kind of moisture curing active polyurethane hot melt adhesive. After curing, it has good bonding performance and impact resistance, good bonding strength, temperature resistance, chemical corrosion resistance and aging resistance. Hot melt adhesive is one of the important types of adhesives in the adhesive industry. It provides good support for dispensing rather than processing of hot melt adhesives.
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