Thickened kraft paper corner protector There are many ways to improve the compressive strength of U-shaped paper corner protectors, which can be started from the selection of raw materials, optimization of structural design, and improvement of production processes:
Thickened kraft paper corner protector Raw materials
Thickened kraft paper corner protector Select high-strength paper: Use paper with high gram weight, long fiber length and high strength, such as high-quality kraft paper or cardboard. The fibers of these papers are tightly interwoven and have good physical properties, which can provide a better compressive foundation for U-shaped paper corner protectors. Data shows that the compressive strength of paper corner protectors made by increasing the gram weight from 120 g/m2 to 180 g/m2 of kraft paper can be increased by 20% - 30%.
Cardboard corner protector Adding reinforcing fibers: Adding reinforcing fibers such as glass fiber and carbon fiber during the paper production process can effectively improve the overall strength and toughness of the paper. Reinforcing fibers can form a support network inside the paper, enhance the ability of the paper to resist external forces, and thus improve the compressive strength of the U-shaped paper corner protector.
Cardboard corner protector Use high-quality glue: The performance of the glue is crucial to the compressive strength of the paper corner protector. Selecting glue with high bonding strength and good water resistance can ensure that the bonding between the papers is firm and not easy to debond when under pressure. For example, using high-strength glues such as hot melt glue or epoxy resin glue can increase the compressive strength of paper corner protectors by 15% - 25%.
Cardboard corner protector Structural design
Increasing thickness: Properly increasing the thickness of the U-shaped paper corner protector can improve its compressive resistance. Without changing other conditions, the compressive strength can usually be increased by 10% - 20% for every 1 mm increase in thickness. However, it should be noted that excessive increase in thickness may lead to rising costs and material waste, and reasonable design should be made according to actual needs.
Cardboard corner protector Optimizing U-shaped structure: Optimizing the structure of the U-shaped paper corner protector, such as adding reinforcing ribs or corrugated structures. Reinforcing ribs can significantly improve the compressive strength of the paper corner protector without adding too much material; the corrugated structure can increase the elasticity and buffering performance of the paper corner protector, so that it can better disperse the force when under pressure.
Adopting a multi-layer composite structure: Compounding papers or materials with different properties in multiple layers to form a U-shaped paper corner protector with better comprehensive performance. For example, high-strength kraft paper is used in the inner and outer layers, and corrugated paper or foam material with buffering properties is sandwiched in the middle layer. Such a composite structure can enhance the buffering effect of the paper corner protector while improving the compressive strength.
