Poly Bags Guide: Types, Materials, and Sizes

25 Aug.,2025

 

Poly Bags Guide: Types, Materials, and Sizes

Poly Bag Types: Flat or Gusseted? 

Aside from material, bag type is another important consideration. Poly bags are available in both flat and gusseted designs. 

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  • Flat Poly Bags. As their name suggests, flat poly bags are made from seamless tubing that allows them to lay completely flat when empty. These bags can accommodate many commercial and consumer packaging applications ranging from food items to manufacturing components.
  • Gusseted Poly Bags. Gusseted bags are designed to expand, with extra panels giving these bags a rectangular shape when full. Gusseted bags are ideal for packaging bulkier items. They are also useful for packaging smaller components as gusseted bags fit more product than similarly-sized flat bags, making them more efficient to store or ship.

The team at Universal Plastics can help you decide which type of poly bag is best for your application.

What Size Poly Bag Do You Need?

Once you’ve decided on a type of poly bag, you’ll need to measure your product to determine the necessary dimensions. If you’ve chosen a flat bag, you simply need to choose the right dimensions for length by width. Consider the size of each component and the number of components you intend to place in a bag. For volumes with very small products, consider the overall volume of product that should go in each bag, then calculate the dimensions that would accommodate that volume.  It’s important to size up to account for imprecision and to allow room between components. 

For a gusseted bag, calculate the desired volume in the same way, but treat the bag as a rectangular prism when translating the desired volume to dimensions. While you should still add a bit to your measurements to ensure the bags have adequate room, the depth and shape of gusseted bags make it easier to get a close and accurate fit.

If your calculations reveal a need for a non-standard size, Universal Plastics can still help. As an industry leader in poly bags, we are happy to accommodate custom orders.

Common Applications

Poly bags are used to pack, store, and ship items of all kinds. 

  • Food Packaging. FDA-approved, food-safe poly bags keep foods fresh and prevent moisture or contamination. At the same time, they offer a simple and attractive way to display bakery items, produce, and bulk foods, especially when printed with custom branding elements.
  • Hardware Packaging. Small poly bags are an excellent, see-through solution for organizing hardware of different sizes or shapes. These packages are especially useful when shipping products with assembly requirements.
  • Bulk Packaging. Thin, plain bags are a cost-effective option for vendors that sell bulk goods of any kind. Applications range from single-use bags for bulk grocery customers to sturdier bags that contain pounds of animal feed.

Poly bags can also protect, contain, and display non-food items of all types, including clothing, office supplies, home goods, and more.

Custom Printed Poly Bags at Universal Plastic

Custom printed poly bags help brands stand out with colorful prints and logos, as well as nutrition facts or other specifications. At Universal Plastic, we offer custom printing on clear poly bags of all shapes and sizes, making it easy for clients to both attract customer attention and comply with labeling regulations.

Why Choose Universal Plastic as Your Custom Poly Bag Manufacturer?

Universal Plastic offers an extensive range of standard and custom poly bags, including:

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Top Benefits of Poly Tubing for Your Business - iSell Packaging

Imagine sending your products to customers, and they arrive damaged because of poor packaging. It is sure to tarnish your business reputation, no matter how efficient the product is. That’s why it is important to invest in the protective solution for your products.

One option that is affordable, efficient, and reliable is poly tubing. Wondering how it can help your business? We’ve got all the answers right here!

What is Poly Tubing?

First things first—what is poly tubing? Think of poly tubing as a giant roll of plastic that you can shape and cut into any size you need. It’s made from strong materials like low-density polyethylene (LDPE) or high-density polyethylene (HDPE). This makes it lightweight, durable, and resistant to things like moisture and chemicals (gross stuff that you don’t want near your products). Poly tubing comes in rolls, so you can use it to make bags that fit your items perfectly. That means no more one-size-fits-all solutions that waste time and materials!

Contact us to discuss your requirements of Poly Tubing Flat Plastic Bags for Long-Term Storage. Our experienced sales team can help you identify the options that best suit your needs.

Why Use Poly Tubing for Packaging?

Poly tubing is like a packaging “superhero” for businesses. From its flexibility to its strength, it ticks all the boxes. Whether you’re in retail, food, or manufacturing, poly tubing can make your packaging process faster and better. Not to mention, it saves you money in the long run. Keep reading to learn the amazing benefits of poly tubing for businesses!

Flexible and Customizable

One of the coolest things about poly tubing is how flexible it is—literally and figuratively! You don’t have to buy dozens of different bag sizes to pack your products. Instead, you can cut the tubing to fit your specific item, no matter how big, small, long, or weird-shaped it is. This makes it perfect for packaging everything from tiny screws to large clothing items.

Easy to Use

It’s super easy to work with poly tubing. Once you cut it to the size you need, just seal the ends with a heat sealer. Voilà! You have a custom bag in seconds. Plus, its transparency means you can easily see what’s inside.

Works in Multiple Industries

Businesses in industries like food, retail, healthcare, and manufacturing swear by poly tubing. Whether you’re packaging electronics, fresh produce, medical supplies, or clothing, poly tubing keeps everything clean and safe. Its versatility is one of the key poly tubing advantages for businesses, as it adapts to so many uses.

Cost-Effective Packaging

One of the biggest reasons businesses love poly tubing is that it saves money. And who doesn’t love saving money?

Say Goodbye to Waste

Because you only use as much tubing as you need, there’s less waste. No more pre-made bags that are too big or too small. This flexibility helps reduce your packaging expenses and lowers your carbon footprint. That’s a win-win for your wallet and the planet!

Saves Storage Space

Storing a roll of poly tubing takes up way less room than stocking different-sized bags. That makes poly tubing for cost-effective packaging a no-brainer, especially for businesses with limited space.

Reduces Labor Time

Using poly tubing can make your packaging process faster. Employees don’t have to hunt down the right bag for each item—they just cut and seal. Faster packaging means more productivity and lower labor costs. Time is money, after all.

Strong and Protective

When it comes to shipping and storage, protecting your products is priority number one. Poly tubing is tough and reliable, making sure your products stay safe no matter where they’re going.

Shields from Damage

Poly tubing is strong enough to resist punctures, scratches, and tears. Whether your products are traveling across the country or just sitting in storage, they’ll be safe and sound. This is especially important for fragile items like glass or electronics.

Protects Against Moisture and Dirt

Moisture and dust don’t stand a chance against poly tubing. It creates a tight barrier to protect your goods. This makes poly tubing for industrial packaging an excellent choice for businesses packing perishable or delicate goods, like food or medical supplies.

Perfect for Shipping and Storage

Because it’s lightweight and durable, poly tubing is ideal for shipping and storing items. It keeps your products safe during transit and ensures they arrive in pristine condition. That’s why businesses trust poly tubing benefits for shipping and storage to keep their customers happy.

Why Should Your Business Use Poly Tubing?

Alright, we’ve talked about all the ways poly tubing can make your life easier. But why should you choose it for your business? Here are some extra reasons to add it to your packaging line-up:

  • Eco-Friendly Choice: Some poly tubing options are recyclable, helping your business reduce waste and support sustainability goals.
  • Cost Savings: By cutting down on material waste, labor, and storage costs, poly tubing delivers long-term savings.
  • Versatility: No matter what industry you’re in, poly tubing can be customized to meet your needs.
  • Customer Satisfaction: Safe, clean, and undamaged products not only save you money but also keep your customers happy—and happy customers keep coming back!

Final Thoughts

Poly tubing might seem simple at first, but this little packaging tool packs a big punch. It’s flexible, affordable, and strong, making it a great fit for any business looking to save money and streamline operations. Whether you’re sealing up products for shipping, organizing items for storage, or packaging goods for retail, poly tubing has you covered.

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