company news, news 03/06/2026 1
Before installation and use, the film should be stored in a shaded, dry location, protected from direct sunlight and rain; storage duration should ideally not exceed six months. If installation is to take place during the winter, it is advisable to keep the film at room temperature for 2 to 3 days prior to installation.
Within the greenhouse frame structure, exposed metal wires and sharp angles must be avoided to prevent the film from being scratched or punctured. During construction, the frame’s surface should be carefully inspected for burrs, rust spots, or other irregularities; any such defects must be removed before the film is installed, as structural flaws (such as exposed wires or rusted components) are highly likely to interrupt the installation process. All steel and metal components within the structure should feature adequate surface protection—such as galvanization—to ensure that no soiled or rusted parts are utilized. Particular care should be taken to avoid direct contact between the film and the greenhouse structural components whenever possible; if direct contact is unavoidable, a white acrylic-vinyl coating should be applied to the contact areas (however, mixtures containing organic solvents must not be used).
Film installation should not be attempted during the hottest part of the day. At such times, the film expands due to heat; when temperatures subsequently drop, the film contracts, which could lead to cracking or tearing.
When unrolling the film, inspect the ground surface to ensure there are no objects that could puncture or scratch the material. Do not drag the film rolls across the ground, as this risks rupturing the film. For the same reason, one should neither walk on the film nor place assembly tools or other objects upon it, to prevent damage. During installation, the film must be pulled taut and laid flat to ensure the optimal performance of its anti-drip properties.
Never install the film inside-out; doing so will render the film’s intended functions ineffective. Installing the film incorrectly can lead to the following consequences: ① A severe reduction in the film’s service life; and ② Since different chemical additives are incorporated into specific layers of the film to achieve distinct functions, reversing the film will result in counterproductive effects—specifically, a failure to provide anti-drip, anti-dust, or anti-aging protection. Essentially, this amounts to paying a premium price for a piece of ordinary plastic sheeting. However, all these issues can be easily avoided simply by paying close attention to the directional markings on the film during installation to ensure the correct side is facing upward. A little extra vigilance can prevent a host of unnecessary complications. Ensure the film maintains a uniform tension to prevent friction and impact against the structural framework; however, it should not be stretched too tightly, as this could lead to tearing during cold seasons due to thermal contraction or the accumulation of rain and snow. Should the film tear, it must be repaired using specialized adhesive tape to ensure its functional integrity is not compromised.
Prevent direct contact between the film and plants, irrigation systems, heating pipes, or other equipment. Refrain from burning crop residue, gasoline-based products, or similar materials—whether outside or inside the greenhouse—to avoid damaging the plastic film with combustion byproducts.
Within plastic-film greenhouses, minimize the use of insecticides, herbicides, and biological treatment agents whenever possible. Additionally, strictly control the concentration of sulfur and chlorine compounds (ensuring levels do not exceed the standard limits of 80 parts per million for chlorine and 400 parts per million for sulfur).
When spraying crops with insecticides, take precautions to prevent the spray from landing directly on the film. Avoid the accumulation of insecticides at points where the film makes contact with the greenhouse’s structural components. Following the application of insecticides, ventilate the greenhouse as quickly as possible.