TYPES OF PLASTIC SHEETING
Plastic sheeting are made of combined plastics which are hardened through different processes. There are different types of plastic sheets available in the market with each having distinct characteristics. Every plastic sheet has its own resistance and durability features, cellular structure, molecules bond and how tightly it is formed. The following are the major types of flexible plastic sheets.
Low Density Polyethylene (LDPE)-
This is the most common type of plastic sheeting. It is very flexible and its thickness ranges from 0.5mil to 40mil in flexible sheeting forms. It has good conformability with the surfaces. However, it is not as strong as other type of plastic sheeting due to its cell structure but it has numerous uses. It is widely used in agricultural and construction sheeting, surface protection films, Abatement Plastic, packaging, tarps, Pond and Canal Liners, Containment, covers, among many other uses.
Linear Low Density Polyethylene (LLDPE)
Basically this is blended form of LDPE. The film is more flexible, more conformity to the surfaces and tensile strength. Linear Low Density Polyethylene is more pliable and softer making it the best alternative for things such as pond liners. It can as well be blended into some other films to give them extra flexibility and strength. LLDPE is excellent for applications such as self-adhesive carpet protection film where the film should have a lot of strength in each thin film for proper absorption of impact. All molecules of this poly are lined up and strongly held together as the film stretch to give the structure more strength and elongation compared to LDPE. The thickness of LLDPE commonly range from 0.5mil to 40mil in flexible sheeting form
Medium Density Polyethylene (MDPE
This is type of flexible plastic sheeting is not commonly used. It is more chemicals resistance, more strength than LDPE, more puncture, tighter cell structure and more tear resistance. Is mostly blended with LLDPE or LDPE to give those attributes one could be looking for in a specific type of film. For example, pond liners have MDPE to add toughness and strength without adding stiffness.
High Density Polyethylene (HDPE)
High Density Polyethylene is widely used in many applications. It is the strongest, toughest, most flexible and most chemical resistance among these four types of polyethylene. HDPE is the most UV resistance without any addictive packages to increase the attribute. It has tight cell structure and this makes it difficult for molecules to penetrate through its structure on a microscopic level. Its thickness ranges from 12mil to 100mil. In most cases, many golf course ponds are lined with HDPE, root barriers, most industrial ponds and canal liners, secondary containment liners and many other applications where much more resistance is required.
Determining the density of polyethylene is equally important as far as classification is concerned. It is measured in a column of water and classified depending on the range of their densities. LDPE and LLDPE have density ranging between 0.919 and 0.924 g/cm³. MDPE are within a range of 0.926 to 0.940 g/cm³. However, the numbers can vary according to your source. They come in different colors but most people prefer clear and transparent plastic sheeting. Other common colors are blue, black, white and red. To learn more about plastic sheeting and its uses, click here.
Uses of plastic sheeting
Plastic sheeting can also be used to contain various contaminants and dust that result from spraying, sanding and other related projects. They as well protects surfaces from stain and paint spills when used as a covering or a drop cloth. Most people use them to make storm windows thus improving insulation during winter periods.
Uses in the Garden
Plastic sheeting that are of light weight can be used in the garden as a row cover if supported with metal or plastic hoops above the plant. During the spring, you can also lay down a layer of plastic sheeting over the earth to warm up the soil. This warmth is enough to kill weed seedling, immature insects and disease pores.
Uses in Disaster Preparedness
Those heavy sheeting of approximately four mills and above can be used in temporal repairing of a wind damaged wall or roof. Furthermore, duct tape and plastic sheeting can be used over doors and windows to prevent infiltration of contaminated air into the building. The flexible plastic sheeting are easily available in the market at affordable cost. Check out the on-line store at Global Plastic Sheeting to see what’s available.