Difference between BOPP, OPP and PP bags

Difference Between BOPP, OPP and PP Bags

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The food industry majorly uses BOPP plastic packaging. BOPP bags are easy to print, coat, and laminate which makes them suitable for packing products like fresh produce, confectionaries, and snacks. Along with BOPP, OPP, and PP bags are also used for packaging. Polypropylene is a common polymer among the three used for manufacturing bags.

OPP stands for Oriented Polypropylene, BOPP stands for Biaxially Oriented Polypropylene and PP stands for Polypropylene. All three differ in their style of fabrication. Polypropylene also known as polypropene is a thermoplastic semi-crystalline polymer. It is tough, strong, and has high impact resistance. Standup pouches, spout pouches, and ziplock pouches are made from polypropylene.

It is very difficult to differentiate between OPP, BOPP, and PP plastics at first. The difference can be felt by touching as PP is soft whereas OPP is brittle. It is important to understand the use of OPP, PP, and BOPP bags in real-world objects for distinguishing them. The PP or polypropene bags are used as non-woven bags. They are treated in order to make them moisture or water-absorbent.

Diapers, sanitary napkins, and air filters among others are common PP products. Similar material is also used for the making of thermal clothing as they provide a temperature barrier. OPP bags are transparent in color and have high tensile strength. They are resistant to high temperatures but wrinkle if brought into rough use. Transparent adhesive tapes are made using the same formula.

They are hard to tear and OPP bags are used in the packing of leather and clothes among others. BOPP bags are crystal clear polyethylene bags. The biaxial orientation gives them a transparent look and makes them suitable for branding by printing on the surface. BOPP bags are used for retail packaging. The biaxial orientation increases strength and they can carry heavy loads.

These bags are waterproof.

The products inside them are protected from moisture for a long period of time. They are the first choice in the cloth packaging industry. PP, OPP, and BOPP bags are resistant to acids, alkalies, and organic solvents. This is the reason why they are used in the packaging industry where storage and transportation in changing atmosphere cannot be avoided. They project the product from moisture and dust like cling films.

They can be recycled and their manufacturing involves less carbon output. PP, BOPP, and OPP bags are also good from an environmental point of view. Rishi FIBC is a BOPP bag manufacturer and provides it at affordable market prices.

The choice of packaging material inevitably influences its cost, durability, effectiveness and lead times. This is true across all industries, including bulk bags. Modern bulk bags have been engineered thoroughly and stood the rigours of various tests to prove that they are a great solution for storing and transporting large quantities of material.

However, there are three types of bulk bags that have different properties as a result of their fabric. All are made from polypropylene (PP), which is a strong and durable polymer. Knowing which PP fabric to choose can make a massive difference to the value that you get out of your packaging products.

Custom Bulk Bags is a leading manufacturer and supplier of high-quality bulk bags in South Africa. We produce up to 3.5 million bulk bags per year for various customers. All of our bulk bags have a minimum safety factor rating of 5:1 and are manufactured in accordance with international regulations and standards.

What are PP, OPP and BOPP?

PP is simply the acronym for polypropylene. This plastic has many beneficial properties that make it perfectly suited to packaging and protective coatings. It is often extruded into tapes and woven to create the fabric that is used to manufacture bulk bags. However, PP can be further manipulated.

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Orientated polypropylene (OPP) is a type of plastic film that is stretched in one direction, hence the microscopic fibres are aligned. This helps with strength and creates a clear plastic film. OPP is commonly used to manufacture small plastic bags, clear labels and flip files.

Biaxially orientated polypropylene (BOPP) is a plastic that is stretched in two perpendicular directions. This further improves the strength of the plastic and is highly suited to printing, which is why BOPP is often used as a clear coating or laminate over woven PP tapes used for bulk bags. BOPP is ideal for brands that need intricate printing and details on their bulk bags, such as barcodes and small labels.

Pros and cons of each polymer

PP:

• Recyclable, moisture-resistant, chemical-resistant, durable and versatile.
• Not very resistant to heat or flames and has limited printability.

OPP:

• Durable, transparent, glossy, dust-resistant and moisture-resistant.
• Difficult to stretch and are limited in their weight capacity.

BOPP:

• High tensile strength, recyclable, high dimensional stability, transparency, low electrostatic charge, high printability and resistant to oils and water.
• Low sealability. 

What is needed for your industry?

PP, OPP and BOPP are suited to specific applications. Your packaging company will be able to guide you towards the best product for your needs, but let&#;s cover some basics. PP bulk bags are your standard packaging product. They can also make good sandbags and geotextiles (or eco-bricks) due to their versatility, durability and cost-effective price point.

OPP is better suited to small packaging materials in the medical, pharmaceutical and food sectors. These packaging products don&#;t need to carry much weight, but they still need to be protective and durable. Think of sealable sandwich bags or packets for pills.

BOPP is best suited for heavier materials, such as dog food, charcoal or wood. However, when it comes to bulk bags, BOPP can be used as a laminate over the PP fabric to improve the durability of the packaging and the precision of printing.

Custom Bulk Bags manufactures an array of bulk bags that are suited to your needs. These are all based on PP fabric that is extruded and woven in-house. We offer several optional extras, including printing and customisation. For more information about our bulk bags, please contact us today.

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Custom Bulk Bags is a leading South African manufacturer of woven polypropylene bags for various industries, such as mining, chemicals and food. We are able to produce over 3.5-million bulk bags per year, keeping our customers in stock at all times. Our bags adhere to the highest levels of quality as a result of our stringent in-house testing and quality control programmes.

Custom Bulk Bags holds ISO certification and we currently have a number of UN-certified designs. We are a Level 2 B-BBEE manufacturer and supplier and fall under the ownership structure of Deneb Investments Limited. For more information on our products, contact . Follow us on Facebook for our latest news and industry insights.

If you want to learn more, please visit our website opp bag manufacturer.