As a common packaging material, bubble bag's compressive strength is closely related to bubble size and wall thickness. This relationship plays a key role in its effective application in the packaging field.
First, bubble size has a significant impact on compressive strength. Generally speaking, smaller bubbles provide higher compressive strength. When the bubble bag is subjected to external pressure, the smaller bubbles are more closely arranged and the air is dispersed more evenly, allowing the pressure to be dispersed and withstood more effectively. For example, when packaging some fragile small electronic products, using a bubble bag with smaller bubbles can better protect the product from extrusion damage, because many closely arranged small bubbles form a relatively stable and strong pressure-resistant bag. buffer structure.
The wall thickness of the bubble bag is also an important factor affecting the compressive strength. Thicker walls mean the material is stronger and can withstand greater pressure without cracking or deforming easily. Under the same pressure, a thick-walled bubble bag can maintain its shape and cushioning performance better than a thin-walled one. For example, when transporting heavier industrial parts, thick-walled bubble bags can provide more reliable protection from surface scratches or structural damage caused by extrusion of parts.
Further research found that there is an interactive relationship between bubble size and wall thickness. When the bubbles are small, if the wall thickness is appropriately increased, the compressive strength of the bubble bag will be further improved. Because the tight structure provided by the smaller bubbles combined with the solidity of the thicker walls is now more effective in resisting external pressure. On the contrary, if the bubbles are large and the wall thickness is thin, the bubble bag is prone to local collapse when pressed, resulting in a decrease in the overall compression resistance.
In actual production, the bubble size and wall thickness can be controlled by adjusting the production process. For example, by changing parameters such as temperature, pressure and screw speed of the extruder, bubble bags with different bubble sizes and wall thicknesses can be produced to meet various packaging needs.
From the perspective of material selection, using high-strength polyethylene and other materials, and rationally optimizing the formula, can also help improve the compressive strength of the bubble bag under the same bubble size and wall thickness.
In addition, for the compressive strength test of the bubble bag, standard testing methods need to be used, such as using a universal material testing machine to apply uniform pressure and record the deformation of the bubble bag under different pressures to accurately evaluate its compressive performance and bubble size. , the quantitative relationship between wall thickness provides a scientific basis for the design and application of bubble bags.
The compressive strength of bubble bags is closely related to bubble size and wall thickness. In-depth study and mastery of these relationships can better optimize the performance of bubble bags, meet the packaging protection needs of different products, and improve the safety and reliability of packaging.
