What is WPP Bag?
WPP bags is the abbreviation of Woven Polypropylene bags, it’s also called PP Woven Bag, PP stands for Polypropylene, it is a thermoplastic resin extracted via the process of polymerization. Woven propylene is the propylene strips that are being woven in both directions to manufacture a light-weighted but very strong material. The bags created with this material is known as WPP bag or PP woven bags.
WPP bags are lightweight, strong, and breathable packaging material designed for carrying a variety of materials, such as food grains, sugar, animal feed, chemicals, fertilizers, cement, and seed. Some WPP bags have additional venting to allow maximum breathability. The most common sizes for agriculture are 25lb and 50lb weight capacities and are able to accommodate custom prints in high quality (however, not photo quality like BOPP).
Different Types of PP Woven Bag
PP Woven bags can be classified into various types based on its strength, design, and size. Although there are various types, we will only discuss the most known PP woven bags types here:
1) PP WOVEN PLAIN BAGS:
As the name indicates, plain PP woven bags are simple PP bags made with virgin plastic. The bags’ advanced properties like light-weight, tear-resistance, and durability make it a perfect option to store sugar, animal feed, grains, etc.
2) PP LINER BAGS
These are the kind of PP bags with liner inside. Liner PP bags are the perfect packaging option for the material that requires the highest protection. These sacks are used to store and transport materials with finer particles such as chemicals, detergent, sugar, cement, etc.
3) PP LAMINATED BAGS
When you coat the plastic bags with an extra layer of poly film, the resultant bags are called PP laminated bags. The bags’ high tear strength, weather resistance, and anti-toxicity properties make it an ideal bag for storing and transporting content that needs to be saved from humidity and water.
4) GUSSETED BAGS
Gusseted bags are the PP bags in which an extra piece of material is added to enhance the bags’ volume or capacity. Besides, the flat surface of the bag enables the sacks to stand erect without any external support.
5) BOPP LAMINATED BAGS
BOPP stands for Biaxially Oriented Polypropylene. It is a layer that is added as an extra layer to the PP woven bags to enhance its strength. BOPP laminated bags have higher durability and are attractive and durable. These bags are primarily used to store and transport multiple contents, including grains, animal feed, and fertilizers.