Greenhouse Plastic Film Tensioning: wire-lock channel and wiggle wire + Film Pressing tapes
The secure fixation of greenhouse plastic film must start from the installation process. The industry’s universal solution mainly includes two core steps. Firstly, the basic fixation: regardless of the type of film covering material used, the film is tightly combined with the framework through a wire-lock channel and wiggle wire system. The wire-lock channel slot are pre-fixed on the greenhouse framework, and during installation, the film must first be pulled tightly and fit the framework, then the wiggle wire are quickly pressed into the slots to complete the clamping fixation. This process needs to be done in one go to avoid film relaxation. Secondly, auxiliary reinforcement: on the basis of the slot and wiggle wire fixation, the overall tension of the film can be further enhanced by installing film pressing tapes horizontally between the greenhouse frameworks, making up for the deficiency of the slot and wiggle wire system in lateral force, which can not only effectively resist strong winds but also optimize the rainwater drainage effect.
Wire-lock Channel and Wiggle Wire Fixation of Film
In the greenhouse industry, the fixation of film covering materials uniformly adopts the wire-lock channel slot and wiggle wire component system. This system consists of two parts: the slots are pre-fixed longitudinally on the greenhouse framework, presenting a groove-like structure; the wiggle wires are elastic steel components used to lock the film in the slots. During construction, manual labor is required to first stretch the film forcefully along the framework direction to ensure the film surface is flat and completely fits the framework’s curved surface, and then the wiggle wire are quickly and continuously pressed into the slots to complete the edge locking. The key to this process is “completing it in one go”—if the operation is interrupted and the film retracts, it will directly cause the film surface to relax, affecting the fixation effect and subsequent use.
Use of Greenhouse Film Pressing Tapes
After the basic fixation of the wire-lock channel slot and wiggle wire for the greenhouse film is completed, auxiliary reinforcement through film pressing tape is needed to solve the problem of insufficient lateral tension. Since the slot and wiggle wire system mainly bears vertical fixing force, there is still relaxation space for the film in the lateral direction, which is prone to fluctuation under the influence of crosswinds. The mechanism of the film pressing tape is: horizontally erecting high-strength ropes (special film pressing tapes or alternative ropes can be used) between adjacent greenhouse frameworks, with both ends fixed to the ground anchors on both sides of the greenhouse, and the middle section tightly pressing the film surface to form a lateral tension belt. This design can effectively improve the overall fit between the film and the framework, not only enhancing the lateral wind load resistance capacity but also forming a micro-arc drainage slope on the film surface through pre-tension, optimizing the rainwater discharge efficiency, and avoiding local pulling damage caused by water accumulation on the film surface.
Solar Greenhouse Plastic Film Fixation Structure
To achieve the secure wind resistance of greenhouse films, the combined fixation scheme of “wire-lock channel and wiggle wire + Film Pressing tapes” must be adopted. This scheme is currently the universal standard in the greenhouse industry, with remarkable wind resistance effect in practical application. Its core advantage lies in low cost and high efficiency: after the basic fixation of the film by the wire-lock slot and wiggle wire, the lateral tension is supplemented by adding film pressing tapes (which can be replaced by cheap ropes), the overall material cost of the scheme is extremely low, and there is no better alternative scheme that can simultaneously take into account the fixation effect and economy.
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