industry knowledge
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Choose the right plastic film for your needs
Read moreSince the early 1960s when polyethylene film was first used to cover wood frame greenhouses, many improvements have been made. Most polyethylene film is manufactured as a coextrusion of three layers with different polymers and additives. Each layer contributes to the quality of the film and enhances its performance. Film lifeThe life of polyethylene film is limited due to degradation processes induced by sunlight and heat. Copolymer poly is a low-cost material that is good for one season. It is a good choice for seasonal greenhouses, overwintering structures and high tunnels. Avoid construction grade material that has less strength. Greenhouse grade poly is warranted for four years or more and […]
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AC vs DC: Alternating Current or Direct Current – Which is Better?
Read moreThe current (electric charge) only flows in one direction in case of DC (direct current). But in AC (Alternating current) electric charge changes direction periodically. Not only current but also the voltage reverses because of the change in the current flow. The AC versus DC debate personifies the War of Currents, as it is now called, in which the two giants of electric power were embroiled in the late 1890s. Thomas Edison, the proprietor of Direct Current, was so threatened by Tesla’s invention that, in order to discredit Alternating Current, he resorted to falsely misleading Americans. Apprehensive about losing his royalties to this new technology, Edison went so far as to electrocute an elephant to […]