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The production process of Fiberglass Geogrid production equipment is relatively complex, covering multiple links from raw material preparation to final product packaging. Each step plays a vital role in the performance and quality of the product.
1. Preparation of glass fiber yarn
The core raw material of Fiberglass Geogrid is glass fiber yarn. Production starts with molten glass, which is pulled into slender continuous fibers through a spinneret. The fibers are cooled, sized, stretched and wound to form continuous glass fiber yarn. In order to enhance the bonding performance of the yarn with the subsequent coating, the surface of the yarn needs to be sized, that is, a layer of chemical additives is applied to improve the wear resistance, UV resistance and bonding of the yarn.
The quality of the yarn has a great influence on the mechanical properties of the subsequent products, so the fiber diameter, tensile strength and uniformity of the yarn need to be strictly controlled at this stage.
2. Weaving or weaving into a grid structure
The sized glass fiber yarn enters the weaving stage. Depending on the product requirements, the yarn will be processed into a unidirectional or bidirectional grid structure. The weaving process usually uses a warp knitting machine or a weft knitting machine. The yarns are arranged in parallel in a predetermined direction through a mechanical device and fixed at the nodes to form a grid with uniform aperture and stable structure.
During the weaving process, the yarn tension must be kept uniform to avoid yarn breakage or relaxation, so as to ensure the dimensional accuracy and tensile properties of the final grid. In addition, different projects have different requirements for the mesh aperture and shape, and the production equipment can adjust the specifications of the mesh as needed.
3. Polymer coating process
The surface of the woven glass fiber mesh has no protective layer and is easily corroded by ultraviolet rays, moisture and chemicals, affecting durability. Therefore, a coating process must be carried out. Common coating materials include polyvinyl chloride (PVC), polyurethane (PU), asphalt modified coating, etc. The coating equipment evenly coats the polymer on the surface of the grid by dipping, spraying or coating to form a protective film.
The thickness and uniformity of the coating directly affect the protective performance and flexibility of the product. Too thick will reduce the air permeability and flexibility, and too thin will not provide enough protection. The production equipment is equipped with a precision coating device and a thickness control system to ensure that the coating is uniform and meets the design requirements.
4. Drying and curing
After coating, the fiberglass mesh needs to be dried and cured to make the coating firmly attached. Drying is usually carried out in a dedicated drying oven or curing tunnel, and the temperature and time are strictly controlled according to the characteristics of the coating material.
This process not only removes solvents and moisture from the coating, but also promotes cross-linking and hardening of the coating, improving its mechanical strength and weather resistance. The uniformity of drying and curing has a direct impact on product performance. The equipment is usually equipped with temperature sensors and wind speed adjustment devices to ensure uniform temperature distribution.
5. Cutting and winding
The cured coated mesh needs to be cut according to the specifications required by the customer. The cutting equipment accurately controls the width and length to avoid edge burrs and broken wires. Subsequently, the product is rolled into a coil of uniform specifications through a winding device for easy transportation and subsequent laying.
Appropriate tension must be maintained during the winding process to prevent the coil from deforming or wrinkling. At the same time, in order to facilitate construction, the outer layer of the coil is usually wrapped with a protective film or plastic film to avoid contamination and damage during transportation.
6. Quality Inspection
During the entire production process, Fiberglass Geogrid production equipment is usually integrated with an online detection system, including grid aperture measurement, coating thickness detection, tension monitoring, etc., to ensure that each batch of products meets the design and standard requirements.
The final product must also pass mechanical performance tests, such as tensile strength, elongation at break, UV aging resistance, etc., to ensure its stable and reliable performance in applications such as geotechnical reinforcement.
7. Packaging and Delivery
After sorting, qualified products will be packaged according to customer requirements. Common packaging methods include plastic film wrapping, carton packaging or pallet loading. Pay attention to moisture, dust and UV protection during packaging to ensure that the product is not damaged during storage and transportation.
Summary
The production process of Fiberglass Geogrid production equipment is systematic and strict, including glass fiber yarn preparation, weaving into grids, polymer coating, drying and curing, cutting and winding, quality inspection and final packaging. Each link requires strict control of process parameters to ensure product mechanical properties and durability. With the advancement of technology and the development of market demand, the degree of equipment automation and production efficiency have been continuously improved, making the application of Fiberglass Geogrid in the field of geotechnical engineering more extensive and efficient.