After the agricultural film breaks, it does not keep warm and does not moisturize. Repair plastic films that are not too shabby in winter. Prepare for rice seedlings, greenhouses, and mulch film coverage in the coming year. This will save money and increase economic efficiency. First, hot repair method: Use iron (also available - head hammer bent thick wire instead) or electric iron. This method is only applicable to polyvinyl chloride films. When repairing, lay the film on a flat table and cut a piece of agricultural film that is slightly larger than the hole. First wipe the place where the two are in contact with each other with a damp cloth, then dry it with a dry cloth and dry it. The film is laid on a hole, a slightly thick piece of cellophane is placed on top, and the soldering iron is gently moved over the cellophane so that the film at the interface is melted by heat. After cooling, the two films stick together. Second, the bonding method: With organic solvents cyclohexanone (hexadecanone) for repair, but it is best to buy a special glue used to repair, make up the film, (such as PVC intestinal knot). The method is to first clean the interface, use a brush to apply glue, air for 2-3 minutes, paste the patch of film, after two hours of adhesion can be used. Third, the seam method: The thicker texture of the agricultural film damage, can be repaired by seam method. That is, the old film is first washed and wiped, and then a piece of film with the same texture is placed on top, and a needle or a sewing machine is used to make up the patch at the skin hole, or to sew up the broken part. Fourth, water supplement method: This method is suitable for greenhouses. Wash the peeled area first. According to the area of ​​the damaged area, cut the film slightly larger than the hole, and then stained with water, or use the natural water droplets on the greenhouse, the air between the film drained, the two membranes press flat, forced out of water droplets. Fifth, paper make-up method: If the film is lightly damaged, it can be repaired by paper. That is, cut a piece of paper that is a little larger than the hole. After the water is wetted, stick it to the damaged area. In this way, it can generally last 10-15 days. Six, red syrup paste method: First made into a paste-like stone powder, and then add the equivalent of 1/3 of the volume of rock sugar brown sugar, slightly hot can be used to stick up damaged agricultural film.
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