Sandbags, animal feed bags, and bags to contain grains for human consumption must be sturdy, tear resistant, and available in water- and UV light-resistant versions. The ultimate guide to polypropylene bags we provide below will give you an appreciation of the strength, versatility, and variety of uses woven polypropylene bags provide.
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Polypropylene is a thermoplastic polymer resin. “Poly” means many. Polypropylene is made by subjecting propylene (a petroleum byproduct) molecules (monomers) to a chemical reaction that makes the molecules combine into a large “networked” or chain molecule, called a polymer.
Polypropylene has many attractive qualities that make it an excellent material for making packaging. Polypropylene is (or can be) made to be:
Polypropylene resin pellets are heated, then extruded into strips, like thin, flat tapes. For nonwoven polypropylene (PP) bags, these strips are bonded together to make a smoother type of plastic bag. Woven PP bags run the filaments or threads for polypropylene through an industrial loom. The loom weaves them into a fabric with warp and weft (meaning horizontal strips weave over and under vertical strips).
The weaving machines create large rolls of fabric, and from those rolls, the woven polypropylene goes through cutting and sealing or sewing machines to turn the fabric into bags.
Both woven and nonwoven PP bags can undergo lamination to make them more amenable to printing and more durable. Woven bags are stronger than nonwoven bags and can carry more weight than a nonwoven bag of the same size.
Woven PP bags are a versatile type of packaging used by suppliers of flowable, bulk products, including animal feed, grains, seeds, powders, and resins. Types of woven PP bags include:
Our ultimate guide to these bags wouldn’t be complete without an explanation of the advantages of woven PP bags. Manufacturers and suppliers of flowable bulk and dry goods love these bags for a variety of reasons. Among the advantages of woven PP bags are:
Many manufacturers and distributors use woven polypropylene bags to store or transport products. Examples include:
If you are a manufacturer, distributor, or retailer in need of packaging material for flowable dry goods, consider working with a supplier that can provide you with a variety of choices. Woven PP bags, including FIBC and BOPP bags, may be just the right thing.
On the retail end, BOPP bags, with their high gloss lamination that can accept sharply detailed graphics on the inside of the laminating film, stand out on shelves with color and images that won’t fade or crack.
For transporting or storing large quantities of dry goods, FIBC bags with structural baffles, spouts, or duffel bag closures could work. Find out if your supplier can provide bags with corner handles, top and/or bottom spouts, or electrostatic protections for materials that could generate static electricity through friction with the bag.
Another consideration is the supplier’s ability to print your chosen graphics on your bags in the colors you want.
At S&K Packaging, we offer several options for woven PP bags. We also offer paper bags, paper-poly combination bags, and packaging supplies, including twine, bulk bag repair tape, and industrials sewing machine thread. Contact us today to discuss your need for paper, paper-poly, FIBC, or BOPP bags.
When it comes to choosing plastics bags, two options are often considered: polyethylene (PE) or polypropylene (PP) plastic. Although polyethylene and polypropylene bags are both plastics, they aren't typically used for the same purpose or products. Deciding which type of plastic packaging to use depends on your specific needs and application.
Polyethylene bags are translucent or opaque with a slight haze to them that allows you to see the items inside, although the details of the contents won't be clear. Polyethylene bags are ideal for packaging goods or items that require a high level of protection. Most industrial companies use polyethylene bags for packing and storing large, heavy items such as industrial machining parts.
The main characteristics of polyethylene bags include:
Polypropylene bags are crystal clear, making them ideal for food, the medical industry, or any other industry where consumers need to clearly see a product before making a purchase.
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The main characteristics of polypropylene bags include:
Before deciding which is the best plastic bag to use, consider your specific business needs, your budget, and how you want to package and present your products to your customers.
Polyethylene has several advantages, including exceptionally high melting and freezing points. It is created by the polymerization of ethylene (or ethene) monomers. Polyethylene is made by the addition or the radical polymerization of ethylene (olefin) monomers.
Some of the properties and benefits of polyethylene bags include:
Characterized by a more transparent appearance and higher tensile strength, polypropylene bags offer a higher heat and chemical resistance than polyethylene bags. Polypropylene packaging can be made with rigid protective edges, making it ideal for wrapping solutions that prevent scratches to the product or contents. It also offers unmatched protection against moisture, vapors, and debris. Some of the specific properties and benefits of polypropylene bags include:
Polyethylene bags are used in a variety of domestic and industrial applications, including making pipes, bottles, cans, tubing, plastic film wraps, polythene grocery bags, and much more.
Polypropylene bags are commonly used for food wrapping, electronics manufacturing, and hospitals to keep contents free of contaminants. They are also used for packaging a vast number of consumer products in a wide range of industries and applications, including the automotive industry.
Polyethylene and polypropylene poly bags are undeniably the two most commonly utilized packaging solutions. When deciding the best option for your needs, it is crucial to know the advantages that each offer. If you need help choosing the right one, reach out to Universal Plastic today. Our experts will work closely with you to understand your application requirements. Later, we can customize these bags with your brand logo and text for branding and promotional purposes and offer them in the best wholesale prices. Contact us today to discuss your requirements and request a quote.
Polyethylene (PE) bags are more flexible, durable, and cost-effective, whereas polypropylene (PP) bags are stiffer, crystal clear, and more resistant to heat and chemicals.
Polypropylene bags are ideal for food packaging due to their clarity, moisture resistance, and compliance with FDA and USDA standards.
Yes, both PE and PP bags are recyclable, but availability depends on local recycling programs and bag type (HDPE, LDPE, etc.).
Yes, especially high-density polyethylene (HDPE) or linear low-density polyethylene (LLDPE) bags, which are highly durable and tear-resistant.
Absolutely. PP bags are crystal clear, making them perfect for retail or food products where visibility is important.
Polyethylene bags are generally more cost-effective, especially for industrial or heavy-duty use.
Yes. Both PE and PP bags can be custom printed with your logo, brand colors, and messaging.
Industries like manufacturing, logistics, agriculture, and hardware use PE bags for packaging, protection, and transport of parts or goods.
Yes, PP bags can withstand higher temperatures and are suitable for sterilization or heat-sealed packaging.
Consider your product type, packaging environment, budget, and visibility needs. You can also contact Universal Plastic’s team for expert guidance and custom recommendations.
Contact us to discuss your requirements of Wholesale Luggage Sets. Our experienced sales team can help you identify the options that best suit your needs.