Artificial Turf Buffer Structure for Long-Term Shock Absorption

The buffer layer is divided into multiple layers (first buffer layer, second buffer layer, third buffer layer) with different structures and functions. The first buffer layer has a three-dimensional knitted structure for initial shock absorption, the second buffer layer has a foam structure for enhanced cushioning, and the third buffer layer provides additional support. This segmentation allows each layer to handle different aspects of shock absorption while maintaining overall dimensional stability.

The patent uses composite materials combining different buffer layer structures (knitted fabric, foam material) and pile yarns (first pile yarn, second pile yarn with different properties). The combination of knitted buffer layer and foam buffer layer creates a composite shock-absorbing system that maintains both shock-absorbing performance and dimensional stability over time.

The invention extracts and eliminates the particle-type filler component from the artificial turf structure, replacing it with an unfilled design that uses a multi-layer buffer system. This removal of fillers eliminates the maintenance issues associated with filler loss and compression while maintaining shock-absorbing performance through the engineered buffer layers.

The buffer layers are designed as integrated, maintenance-free components that replace the need for refillable particle fillers. The buffer layer structure is intended to provide long-term shock absorption without requiring periodic refilling or maintenance, effectively replacing short-living filler materials with durable structural components.

Different regions of the buffer layer system have different properties optimized for their specific functions. The first buffer layer uses a three-dimensional knitted structure with specific loop configurations for initial shock absorption, the second buffer layer uses foam material for enhanced cushioning in critical areas, and the third buffer layer provides additional support. This local optimization allows effective shock absorption without uniformly increasing overall complexity.

The patent transitions from a single-layer buffer design to a multi-layer vertical structure, adding the dimension of layering. The buffer layers are arranged in sequence (first, second, third buffer layers) with different thicknesses and material properties, creating a vertical gradient of shock-absorbing capabilities that improves performance without requiring excessive thickness in any single layer.