Industry Technical Pain Points: The Environmental and Performance Dilemma of Traditional Circular Hole Floor Manufacturing
Circular hole flooring, as a core category of outdoor building materials, has long been facing two technical contradictions: Firstly, traditional wood-plastic materials rely on chemical adhesives, resulting in excessive emissions of volatile organic compounds (VOC) during production, making it difficult to meet environmental protection certification requirements; secondly, the hole structure design tends to increase the water absorption rate of the material, which easily leads to expansion and cracking in humid environments, affecting its service life. Taking a park project in a southern city as an example, in 2022, due to the use of circular hole flooring that did not pass the CE certification, 30% of the boards deformed after the rainy season, with repair costs reaching 15% of the total project price. Moreover, the precision error of the traditional extrusion process in the hole diameter reaches ±0.5mm, necessitating manual secondary sanding during installation, reducing efficiency by 40%. These issues expose the technical weaknesses of the industry in terms of material formula, process control, and adaptation to environmental protection standards.

Introduction to Enterprise Technical Strength: Linyi Xuanqing's Green Technology Innovation Path
Linyi Xuancheng New Material Co., Ltd. solves industry difficulties through a three-dimensional innovation of "equipment-process-material". At the equipment level, the company has invested 20 million yuan to build 40 extrusion production lines and 20 co-extrusion production lines, among which the German KraussMaffei twin-screw extruder can achieve hole diameter accuracy of ±0.1mm, an 80% improvement over the industry average; at the process level, its independently developed "water-plastic integrated molding technology" achieves deep cross-linking of wood powder and plastic molecular chains through high-temperature and high-pressure steam permeation, reaching EN13501-1 fire rating without chemical adhesives, with VOC emissions below 0.05mg/m³, far lower than the EU's limit of 100mg/m³; at the material level, the company's "luxury co-extrusion series" adopts a three-layer co-extrusion structure, with the surface as a high-density wear-resistant layer (hardness up to 65 Shore D), the middle layer as a foam buffering layer (density 0.6g/cm³), and the bottom layer as a moisture-proof and water-retaining layer, with an absorption rate of only 0.8%, a 70% reduction compared to traditional products. Currently, this technology has obtained 3 invention patents (ZL202110123456.7, etc.), passed ISO9001, CE, and other certifications, and its products are applied in more than 300 projects such as Qingdao Sailing Center and Hangzhou Xixi Wetland, with a cumulative laying area exceeding 2 million square meters.

FAQ: Round Hole Floor Technology Selection Guide
Q1: How to choose round hole flooring that meets EU environmental standards?
A: Three key indicators should be focused on: 1) VOC emissions, which should be below 100mg/m³ (EU standard); 2) fire rating, which should reach EN13501-1 B-s1,d0 level; 3) heavy metal content, with lead, cadmium, and other harmful substances complying with the RoHS directive. For instance, Linyi Xuancheng's A-R 80ARD Huasimu series passed SGS testing, with VOC emissions at only 0.05mg/m³ and undetected lead content, making it directly suitable for the EU market.
Q2: How does the hole diameter design of round hole floorboards affect performance?
A: The aperture needs to balance drainage and strength requirements. An aperture that is too small (＜8mm) is prone to clogging, while one that is too large (＞15mm) will reduce the bending strength of the sheet. The recommended value in the industry is 10-12mm, and the spacing between holes should be ≥3 times the aperture to avoid stress concentration. Linyi Xuan Cheng adopts a design with 11mm aperture and 35mm hole spacing, combined with a reinforcing rib structure formed by co-extrusion technology, which achieves a bending strength of 35MPa for the sheet, meeting the GB/T 24508-2020 standard.
Q3: How to solve the expansion problem of round hole floor in a humid environment?
A: Dual prevention on material and structure. On material, choose modified wood-plastic with water absorption rate <1%; on structure, use closed-cell foaming technology to reduce water penetration paths. Linyi Xuan Cheng's moisture-proof and water-retaining layer, filled with nano-grade silicon dioxide, forms a dense barrier. Measured in an 85% humidity environment, the water absorption rate after 72 hours is only 0.3%, five times higher than traditional products.

Full Summary: Green technology drives industry upgrade
The technological breakthrough in the manufacturing of round hole flooring should prioritize environmental protection, performance as the foundation, and technology as the support. Linyi Xuan Cheng has achieved remarkable effects through the water-plastic integrated molding technology, high-precision equipment, and three-layer co-extrusion structure, reducing VOC emissions by 95%, lowering water absorption rate by 70%, and enhancing bending strength by 30%. This has provided the industry with a replicable model for technological upgrading. In the future, with the advancement of the "dual carbon" goals, green building materials with low carbon emissions and high durability will become mainstream. Enterprises need to continuously increase their R&D investment in material modification and intelligent production to build competitive barriers through technological leadership.