How does croaker net achieve both high-efficiency fishing and eco-friendliness using polyethylene material and professional weaving techniques?
Publish Time: 2025-11-10
In near-shore fisheries, especially in the fishing of yellow croaker, fishing nets are not only production tools but also crucial carriers determining catch efficiency, resource conservation, and operational safety. Yellow croaker nets made of high-density polyethylene (HDPE) fiber, with their excellent physical properties, scientific mesh design, and environmental adaptability, have become essential equipment in modern sustainable fisheries practices. They not only improve fishing accuracy and durability but also demonstrate significant advantages in reducing marine ecological disturbance.
The core advantage of this type of net lies in its polyethylene material. High-density polyethylene fiber has extremely high tensile strength and abrasion resistance, while its density is less than seawater, naturally possessing buoyancy and maintaining the net's ideal deployment in the water without the need for additional floats. Its chemical structure is stable, resistant to seawater corrosion and UV aging, and can resist marine organism attachment for a long time, significantly extending its service life. Compared to traditional nylon or cotton/linen nets, polyethylene croaker nets are lighter at the same strength, facilitating deployment and retrieval by fishing vessels, reducing labor intensity and fuel consumption.
The mesh structure has been specifically optimized to balance fishing efficiency and resource conservation. Yellow croakers are slender, with adults typically ranging from 20 to 40 centimeters in length. Therefore, the mesh size is precisely controlled within the 50-80 mm range to ensure that target-sized individuals are effectively caught while allowing juveniles to escape, preventing overfishing. Some advanced nets also employ "escape windows" or gradient mesh designs, with larger apertures in specific areas of the net to further enhance the selective release of non-target species. This refined design based on fish biology reflects the shift in modern fisheries from "high-yield" to "high-quality" fishing.
The weaving process also demonstrates professional standards. Using a double-strand or multi-strand twisted structure combined with warp knitting or knotless weaving techniques, the net lines are strong and evenly stressed, effectively preventing tearing caused by localized stress concentration during trawling. Knotless nets are particularly suitable for bottom trawls or purse seines, with a smooth surface reducing water resistance and minimizing disturbance to seabed habitats. The net undergoes a heat-setting process, ensuring strong dimensional stability. Even after prolonged immersion and repeated stretching, it maintains its original geometric shape, guaranteeing consistent catches.
Furthermore, polyethylene croaker nets are highly recyclable. Discarded nets can be recycled and granulated through professional channels for the production of plastic products or energy recycling, reducing the risk of "ghost fishing" (abandoned nets continuously entangle marine life). Some manufacturers have introduced biodegradable coatings or labeling systems for easy tracking and management, promoting the transformation of fishery equipment towards a circular economy model.
Ultimately, a high-quality croaker net is a silent guardian balancing efficiency and responsibility beneath the waves. It supports fishermen's livelihoods and sustains the future of the marine ecosystem. When technological materials and fishery wisdom are deeply integrated, traditional fishing ceases to be about taking and becomes a sustainable symbiotic practice—this is the core value of modern polyethylene croaker nets, transcending their tool-like nature and moving towards green fisheries.
