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FAQ
- How are membranes classified?
- HDPE film. HDPE film is a kind of tough semi transparent film. Its appearance is milky and its surface glossiness is poor. The tensile strength, moisture resistance, heat resistance, oil resistance and chemical stability of HDPE films are better than those of LDPE films, and they can also be sealed by heat. But the transparency is less than that of LDPE. HDPE can be made into thin film with thickness of 0.01. L. Its appearance is similar to that of thin silk paper. It feels comfortable and is called "paper film". It has good strength, toughness and opening, and can be added with a small amount of light calcium carbonate to enhance the paper feel and reduce the cost. HDPE paper film is mainly used for making all kinds of shopping bags, garbage bags, fruit packing bags and all kinds of food packaging bags and so on. Because of its poor air tightness and no incense retention, the storage period of packaged food is not long. In addition, the HDPE film can be used as a heat sealing layer of the cooking bag because of its good heat resistance.
- In a bowl with the seeds covered with plastic film, you need time off the air
- When the seedlings grow, to remove the cover film, otherwise the film may have a high temperature. Can take place at the seedling emergence, not to suspend the Miao Qi off again.
- What is the raw material of agricultural film?
- Agricultural plastic film has a wide range of varieties and specifications. According to the use of plastic, plastic raw materials are different, divided into PVC plastic film, polyethylene plastic film;. According to a method of manufacturing a plastic film, divided into pressure Ting film, blown film; according to some special properties of plastic film with the film, there were no drop seedling film, thin film, thin film, colored cover wide film, packaging film etc.. According to the different thickness and width of plastic film, there are various specifications.
- How to detect the surface tension of plastic film?
- To judge the smoothness of the surface of the plastic film by hand, the more smooth the surface of the film is, the better the surface treatment of the film is.
- Plastic film sealing machine (Dorch) repair
- Look at your lights if the temperature controller is always heating state that is heating pipe is broken can be bought at a price in dollars a dozen
- Masks that layer of white plastic film is used for what?
- That layer of plastic film should be removed when doing mask, it is to prevent the mask folded when the stick together and prevent loss of nutrients, to prevent mask deformation. Do not use with the mask, and if used together, will lead to loss of permeability of the mask, but will lose the role of the mask itself, it may also play a counter effect.
- Can the concrete surface be covered with plastic film in winter construction?
- The hardening process of concrete is the chemical reaction of water. Concrete is called concrete when hardened. Concrete releases heat in chemical reactions, and heat accelerates the evaporation of water in concrete. Therefore, concrete pouring must ensure that the moisture content of concrete mixture can meet the needs of this chemical reaction.
- Building floor pouring why plastic film underneath?
- Only after the completion of casting, the surface of the filmThe reason is to prevent surface cracking;The question of the subjectPrevent moisture from the floor, affect the quality of the pouring
