As a precision electronic product accessory, the sealing performance of mobile phone protective screen blister packaging is crucial, and heat sealing technology plays a key role in it. Heat sealing uses heat to melt and bond the seals of packaging materials together to achieve a sealing effect.
First of all, heat sealing temperature has a direct and significant impact on packaging sealability. If the heat sealing temperature is too low, the sealing area of the packaging material cannot be fully melted, and the binding force between the molecules is weak. During subsequent transportation and storage, the sealing is prone to cracking, leading to the intrusion of external dust, moisture, etc. Damage to the phone’s protective screen. On the contrary, if the temperature is too high, the packaging material may be excessively melted or even decomposed, which will not only affect the appearance quality of the packaging, but also reduce the strength and sealing performance of the seal, and it will also be unable to effectively protect the product.
Secondly, heat sealing time is also a factor that cannot be ignored. Proper heat sealing time can ensure that the packaging material forms a uniform and strong adhesive layer at the sealing area. If the time is too short, the adhesion at the seal will be insufficient and there will be tiny gaps, making it difficult to achieve the ideal sealing effect; if the time is too long, the material may age and become brittle, reducing the overall performance of the packaging. When squeezed or vibrated by external forces, , the seal is easily damaged, causing the packaging to lose its sealing properties.
Furthermore, heat sealing pressure also plays an important role in the sealing process. Appropriate pressure can make the materials at the seal fit tightly, promote the diffusion and combination of molecules, and enhance the sealing effect. When the pressure is insufficient, the materials will not fit tightly together, resulting in bubbles or wrinkles. These weak links will destroy the sealing of the packaging; too much pressure may cause the material to deform or even crush the packaging, seriously affecting the protection of the mobile phone screen. effect.
In the heat sealing technology of mobile phone protective screen blister packaging, parameters such as heat sealing temperature, time and pressure are interrelated and influence each other. Only by accurately controlling these parameters can good packaging sealing be achieved and ensure that the mobile phone protective screen can be used throughout the entire circulation process. It is protected from the adverse effects of the external environment and maintains the stability of its quality and performance.
