How do blister boxes ensure zero damage to electronic and electric products?
Publish Time: 2024-12-18
In the packaging world of electronic and electric products, blister boxes are like a close-fitting shield. The precise control of their molding process parameters is directly related to the safety of the products during transportation and storage.
Temperature control is a key link. Blister molding involves heating and softening plastic sheets. If the temperature is too low, the sheet is not flexible enough, and forced molding is prone to creases and breaks. These defects may scratch the delicate shell or squeeze the internal precision circuits during the subsequent packaging of electronic and electric products. On the contrary, too high a temperature will cause the plastic to soften excessively and the molecular structure to be unstable, resulting in the blister boxes being fragile after molding and unable to withstand slight collisions, let alone protecting the products from logistics bumps. The precise temperature control range needs to be determined based on the characteristics of different plastic materials. For common PVC materials, the heating temperature should be stable at 140-180℃ to ensure that the sheet is evenly heated, soft but not tough, and can fit the product contour closely during molding to prevent damage to electronic components due to defects in the material itself.
Pressure regulation is also very important. The pressure during molding must be just right. If the pressure is insufficient, the corners of the blister boxes cannot be compacted, the seal is not tight, and dust and water vapor take advantage of the opportunity to enter and corrode the circuit boards of electronic and electrical products; if the pressure is too high, the product is tightly squeezed, and the fragile display screen and slender sensor pins may be damaged instantly. In the operation of the blister machine, the pressure value must be finely adjusted according to the size and shape of the product. For small and precise smart watch blister boxes, the pressure may be controlled at 0.3-0.5MPa, which can not only ensure the complete molding of the box body, but also leave a safe "buffer zone" for the internal watch to prevent it from excessive pressure.
The cooling time should not be ignored either. Rapid cooling seems to be efficient, but it is easy to cause the blister boxes to shrink and deform rapidly, pulling the internal products; too slow cooling will extend the production cycle, increase costs, and may affect the stability of the product due to long-term high temperature. For example, the cooling time of blister boxes used to package drone batteries needs to be precisely set to a specific time so that the box can be firmly formed during orderly contraction, protecting the battery from performance degradation due to sudden temperature changes and ensuring that the electronic products are properly cared for from the moment they roll off the production line until they are delivered to consumers intact.
