Production process Polyethylene nets

The raw materials used in polyethylene nets are HDPE (High-Density PolyEthylene) chips and Master Batches (MBs). HDPE chips are produced from crude oil and are the basic component of the material. MB is an expression used for concentrated additives like colour, UV protectants and other additives mixed with polyethylene. MBs are used to secure the proper mixing of the additives with the HDPE chips.
 
The production of polyethylene nets starts with the mixing of the HDPE chips with the MB (see picture 1). 

                 
This mixture is transferred to the extruder. The extruder is basically a heated cylinder with a screw inside (see picture 2).

The mixture of HDPE chips and MB is placed in one end of the cylinder and is transported through the cylinder by the screw. On the way through the cylinder the temperature and the pressure increase, melting and mixing the chips and the MB. The fluid plastic created in the cylinder is then pressed through the spinderret, creating the primary stage of the yarn. The yarn is immediately let through a water bath to cool down, thereby hardening the HDPE (see picture 3).

After cooling, the yarn is run through the first stretching section, where it is drawn longer and thinner (see picture 4).

                               
Subsequently, the yarn passes through a heating section where the temperature is raised to create a softer yarn that is then stretched one more time to achieve its final thickness (denier).
 
The yarn is now finished, and the final step on the extruder is the winding (see picture 5). The yarn is then transferred from the winding wheels to the hanks form (see picture 6). If the yarns are to be knitted elsewhere, it is the hanks that are sent to the subcontractor.
              
From the hanks the yarn is then transferred to small bobbins, from where it is wound onto the warp beam (see pictures 7 and 8). This last winding is called warping.

The warp beams are then transferred to the warp knitting machine, and the yarns from two sets of beams are then passed through two rows of needles, thereby creating the net material (see picture 9).
 
After knitting, the netting material is heat set at 120˚C while being stretched into its final width (see picture 10). This creates a stable material that will not shrink in washing. 

                 
The netting material is inspected for knitting faults and is transferred to the cutting and sewing department where it is made into nets.
 
Bestnet Europe Ltd. has strategically placed production facilities chosen according to social and economic considerations. This enables us to deliver our products at the lowest possible cost, while keeping our social responsibility in sharp focus.