There are many other types of manufacturing process for different types of tarps. The process for polyethylene, canvas, vinyl and other tarp materials can vary. We cover a wide range of poly tarps, canvas tarps, mesh tarps and heavy duty tarps. Order Online and Save! To order tarps outside of the United States, please call Address - FM Advantages Polyethylene tarpaulins are often cheap They are also waterproof Polyethylene tarpaulins are usually lightweight.
Disadvantages Polyethylene tarpaulins may not be appropriate for extensive or hard-wearing use. It can also be used to make tarpaulins, and is often covered with a poly urethane PU layer. Advantages PU coated polyester tarpaulins are waterproof.
PU coated polyester tarpaulins offer shelter from the sun. Disadvantages Polyester may become noisy in windy conditions. Some of these tarpaulins may be constructed from polyester with a PVC lamination. Advantages PVC tarpaulins are waterproof. They are also less prone to rips and tears. Disadvantages Unlike canvas, which is also very robust, PVC is not breathable.
This type of tarpaulin can be used for:. However, these tarpaulins cannot protect objects from the weather, as they are designed to allow a degree of wind and light through. Advantages Moisture can escape from mesh tarpaulins. Mesh tarpaulins are useful should the user wish to allow light and wind through. Disadvantages Mesh tarpaulins cannot protect anything from the elements.
These benefit from being a hybrid between the natural fibres of cotton and polyester, which is synthetic, and have benefits of both. Advantages Cotton-Poly canvas tarpaulins are marketed as being fully waterproof a property of plastic tarpaulins. They are also breathable a property of canvas.
Disadvantages If the Cotton-Poly canvas tarpaulin has been dyed, the colour may run. However, it should be noted that these plastic sheets are not appropriate for use as tarpaulins due to the fact that they are not very durable in the sunlight, quickly going brittle. However, FR tarps are not fire proof. They will melt if continuously exposed to flame, but will not fuel the fire and facilitate combustion.
FR tarps would stop burning after the source of the flame has been removed, whereas non-FR tarps could continue to burn after the flame has been removed. Extrusion line producing polyethylene yarn First, we briefly explain the production of polyethylene, which is the source material for PE tarpaulin. During the refining of petroleum, a liquid called naphtha is produced, and naphtha is cracked to produce ethylene. Catalysts, temperature, and pressure are used to polymerize the ethylene into small whitish polyethylene pellets.
A high pressure polymerization process can be used to synthesize low-density polyethylene LDPE , and a low pressure process can be used to synthesize high-density polyethylene HDPE. Most tarpaulin manufacturers start with polyethylene purchased in this pellet form.
HDPE pellets are fed into an extruding line which first melts the pellets and produces polyethylene film, and then cuts and stretches the film into polyethylene yarn.
A weaving loom then cross-weaves the yarn into a fabric that is tear-resistant and stretch-resistant. This fabric is then coated on both sides with a layer of low-density polyethylene LDPE , which gives the tarpaulin a protective shiny finish, and masterbatches are used at this step to determine the color of the tarpaulin.
They block some of the UV rays from the sun. Mesh tarps are constructed in such a way that they have small holes between the fabric threads. Hence, they have a lower resistance to wind as compared to other types of tarps. However, this is an advantage when mesh tarps are used for hauling gravel, sand, and other substances in a truck.
They can be tied over the bed of a truck to secure the cargo underneath. The mesh tarps are used for many purposes such as:. Canvas is a heavy and robust material. It is usually given a wax coating to establish a water-resistant layer.
They need periodic recoating to maintain its water-resistant character. Canvas tarps are constructed using highly breathable materials that allow the passage of air through individual fibers. Canvas tarps can be treated or untreated. Treated canvas tarps offer resistance to water, mildew, and UV rays while untreated canvas tarps do not offer complete waterproofing.
They provide a great cover to items that are kept outdoors. Canvas traps are dyed using a specific dye to make the tarps water-repellant. However, it is possible that the color stains the items placed under its protection. It is best to use it for things on which you can afford getting a stain. Canvas tarps may have an unpleasant smell in the beginning but it fades after some time.
Poly tarps are made from polyethylene, which is a plastic material. A poly tarp that is light duty is lighter in weight, has a lower poly coating, and a lower mesh count.
A high duty poly tarp is heavier and has more poly coating and a higher mesh count. Light duty poly tarp is used to cover items for shorter periods of time while for a long-term use high duty poly tarps are preferred. They are ideal for covering materials that are placed outdoors in the hot sun.
They are made from high-quality materials to last for an extended period. Poly tarps are not suitable for covering items that require breathability because poly tarps do not have enough space between its particles to allow the passage of air. Poly tarps are usually cheap, water-proof, and lightweight. However, they are not the most robust of all tarps. They are not appropriate to be used extensively for hard wearing purposes.
These are poly tarps laminated, coated, or tempered with vinyl. Vinyl tarps have high strength and they resist tearing. Hence, they are suitable for industrial use.
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