The compression manhole cover moldings is not made of ordinary plastic. It is made of high-strength anti-aging engineering polypropylene. The product has very strong toughness and can withstand a weight of 200 kg. It can also ensure that it will not be deformed for a long time. But one thing is very important. Plastic materials are afraid of sunlight. Therefore, whether it is in use or after use, the cover mold must be protected from sun protection to avoid premature aging.
The preventive measures are as follows: one is to avoid the cover mold from being irradiated by strong light; the second is to avoid the centralized storage of rotten and deteriorated items and the cover mold; the third is to control the scope of the mold during the production process; the fourth is to control man-made damage and strictly follow the production Regulations and production requirements for reasonable production.
The composite manhole cover mold will not be aging in contact with the cement. The plastic itself has the function of acid and alkali resistance. When the cover mold is used, spray some engine oil on the surface, which is beneficial to demolding and protecting the mold, delaying the aging and weathering of the mold. The cover mold is used up It can be recycled and reused, which saves costs and is environmentally friendly. It is conducive to repeated use and saves expenses.
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Post time: Sep-09-2021