To enhance the product's crush protection, a comprehensive design of the blueo tempered film packaging box requires consideration of structural mechanics, material application, and cushioning mechanisms. The core principle is to protect the tempered film from damage during transportation or storage by distributing pressure, absorbing impact, and limiting local deformation.
The corners and edges of the blueo tempered film packaging box are prone to crush damage and require local reinforcement. For example, high-density foam or plastic compression blocks can be embedded in the corners. These blocks can be curved or rectangular, conforming tightly to the inner wall of the blueo tempered film packaging box. When external pressure acts on the corners, the compression blocks absorb some of the energy through deformation while distributing the remaining pressure to the adjacent box walls, preventing localized stress concentration that could lead to box cracking or compressive damage to the tempered film. Additionally, triangular support frames made of cardboard or thin plastic sheets can be installed at the four corners of the blueo tempered film packaging box. This geometric structure enhances overall rigidity and further limits deformation at the corners.
To directly protect the tempered film, an independent cushioning layer should be designed within the blueo tempered film packaging box. Common solutions include: 1. A double-layer box structure: a rigid cardboard or plastic outer layer and a soft foam or EVA (ethylene-vinyl acetate copolymer) lining. The foam layer is recommended to be 3-5 mm thick. Its surface can be embossed with grooves that match the contours of the tempered film, ensuring a tight fit and minimizing movement when the product is inserted into the blueo tempered film packaging box. 2. Bubble wrap or honeycomb cardboard can be used as a cushioning material. Bubble wrap should be larger in diameter to provide ample cushioning space; honeycomb cardboard should have uniform pore sizes to avoid localized weaknesses that could lead to protection failure. Regardless of the material used, the cushioning layer must completely cover the tempered film surface, leaving a 1-2 mm margin at the edges to prevent direct pressure transfer to the edges of the product.
The opening and closing structure of the blueo tempered film packaging box also affects its protective performance. Traditional magnetic or snap-on designs can easily open accidentally when squeezed, causing the tempered film to fall off or collide with the box. Improvements include: first, adopting a double-security closure mechanism, adding a magnetic strip or Velcro to the snap fastener to ensure the box remains closed even with slight deformation. Second, optimizing the interlocking structure between the lid and the box body. For example, designing a raised tab on the edge of the lid and a corresponding groove on the box body creates an interference fit to enhance the seal and prevent the lid from loosening due to pressure. Additionally, adding a thin layer of sponge or velvet to the inside of the lid provides additional cushioning during closing and protects the tempered film from scratches.
If the blueo tempered film packaging box needs to withstand significant pressure, an elastic support structure can be introduced. For example, a spring or elastic rubber pad can be placed at the bottom of the box. When external pressure is applied to the box, the spring or rubber pad absorbs some of the energy through deformation and evenly distributes the remaining pressure throughout the box, preventing local overload. This structure is suitable for stacking or transport. However, it is important to ensure that the spring constant matches the overall weight of the blueo tempered film packaging box to avoid shaking due to excessive elasticity or ineffective protection due to insufficient elasticity.
Regarding material selection, the outer layer of the blueo tempered film packaging box is recommended to be made of high-strength corrugated cardboard or thin plastic sheet. The thickness should be adjusted according to the product size, generally not less than 2 mm. The inner cushioning material must have good resilience. For example, the rebound rate of EVA foam should be no less than 60% to ensure that it can return to its original shape after repeated compression. In addition, all materials must meet environmental requirements to avoid product contamination or environmental compliance issues caused by the use of materials containing hazardous substances.
