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Polypropylene Webbing

Polypropolyne webbing is a great all rounder. Not as strong as Nylon or Polyester webbing but its light and its cheap! 

Out of the 3 types of webbing, Polypropolyne keeps its colour the best. Nylon webbing can become dull and patchy overtime.

polypropolyne webbing will also float in water and resists acids and Alkalines very well and is easy to clean. It repels water very well, dosnt stretch much and is recylcable. Resists mildew, rot and is odor, oil and grease  resistant.

Often used on cheaper backpacks and bags, straps and on things like yoga mats and handles on water bottle holders and camping stuff.

What are the Advantages of Polypropylene?

  1. Polypropylene is readily available and relatively inexpensive.

  2. Polypropylene has high flexural strength due to its semi-crystalline nature.

  3. Polypropylene has a relatively slippery surface.

  4. Polypropylene is very resistant to absorbing moisture.

  5. Polypropylene has good chemical resistance over a wide range of bases and acids.

  6. Polypropylene possesses good fatigue resistance.

  7. Polypropylene has good impact strength.

  8. Polypropylene is a good electrical insulator.

What are the Disadvantages of Polypropylene?

  1. Polypropylene has a high thermal expansion coefficient which limits its high temperature applications.

  2. Polypropylene is susceptible to UV degradation.

  3. Polypropylene has poor resistance to chlorinated solvents and aromatics.

  4. Polypropylene is known to be difficult to paint as it has poor bonding properties.

  5. Polypropylene is highly flammable.

  6. Polypropylene is susceptible to oxidation.

Despite its shortcomings, polypropylene is a great material overall. It has a unique blend of qualities that aren’t found in any other material which makes it an ideal choice for many projects.

Polyester Webbing

polyester webbing is probably my favoroute.

It has a tighter weave than the Polypropolyne and is "straighter" and flatter. You will usually find it on most backpacks and bags exept for very cheap items. 

Its stonger than Polypropolyen and will also last longer in UV light. It also is very abrasion resisant, it has a high melting point and has a high tancile strength. Its also rot & mildew resistant and has limited water absorption.

You will find it on backpacks and bags, car tie down straps and  evan belts.

What are the Advantages of Polyethylene terephthalate (Polyester)

  1. Polyethylene terephthalate is readily available and relatively inexpensive.

  2. Polyethylene terephthalate has high strength to weight ratio.

  3. Polyethylene terephthalate (PET) is very resistant to moisture.

  4. Polyethylene terephthalate has excellent chemical resistance to organic material and water (it is not biodegradable which is good and bad depending on your perspective and its intended use).

  5. Polyethylene terephthalate is virtually shatterproof (it won’t break like glass packaging).

  6. Polyethylene terephthalate is easily recycled. It can be reused by conducting a series of washing processes or broken down into its constituent raw materials which can then be turned into the original resin.

  7. Polyethylene terephthalate is highly transparent.

What are the Disadvantages of Polyethylene terephthalate (Polyester)

  1. Polyethylene terephthalate is somewhat susceptible to oxidation (for example, it is not typically used for beer or wine storage because the shelf life of these beverages is expected to be long enough such that some taste degradation might occur before the item is consumed).

  2. Polyethylene terephthalate is not biodegradable (which is good and bad depending on your perspective and its intended use).

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