How is Bubble Wrap Made? Paper Mart Blog - Boxes, Bags, Ribbon, Tulle and More

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TLDR: Bubble wrap is an essential protective material used in everything from packing moving boxes to shipping delicate items in standard boxes, but few people understand the sophisticated manufacturing process behind it. Rather than simply trapping air between two plastic sheets, bubble wrap production involves melting polyethylene resin, using specialized drums with suction to create uniformly shaped bubbles, and adhering multiple layers together. This complex process ensures that when you pack your moving boxes or prepare items for shipment, the bubble wrap provides consistent, reliable cushioning. Understanding how bubble wrap is made helps explain why it’s such an effective protective solution for boxes of all sizes, from small shipping containers to large moving boxes used during relocation.

You may look at a sheet of bubble wrap and see nothing more than a simple piece of plastic containing bubbles filled with air. But have you ever stopped to wonder just how this miraculous product for the purposes of cushioning came to be? It’s not as though someone just slaps two sheets of plastic together and forces air in between them. This would create more of an air pillow. So how do manufacturers create the evenly spaced rows of identical air bubbles that dot the surface of bubble wrapping? You might be surprised to learn that process is rather complex and requires an array of computerized machinery and calculated procedures designed to produce the seemingly simple rolls of bubble wrap you order from PaperMart.com.

Creating Bubble Wrap: The First Steps

The creation of bubble wrap begins with polyethylene, a type of clear plastic. It starts out as small, identical beads of resin which are passed through an extrusion machine. During this process, the heat produced by the extruder softens the beads of resin into a soft, viscous liquid that is uniformly distributed as it is forced through a slot. The result of this portion of the manufacturing process is two sheets of transparent polyethylene with a pocket of air in between.

The next step involves a second piece of machinery known as a drum. The sheets emerging from the extruder are fed into the drum fairly quickly, so as to take advantage of the malleable nature of the heated resin. One of the sheets fits to the surface of the drum, which is dotted with indentations of uniform size and placement. Through the use of suction, the sheet of plastic on the drum conforms to the surface, so that the portions of plastic covering the indentations on the drum are forced into the well-known “bubble” shape that we recognize on bubble wrapping products. The bottom sheet is then adhered to the top, trapping air inside the bubble pockets and creating what we see as an unbroken surface.

Additional Steps

From there the completed bubble wrap may go through other processes. For example, some rolls of bubble wrap are perforated to create smaller sheets that can easily be torn away, negating the need to cut the desired length. In some cases, a third layer of polyethylene film is added to the top of the bubbles for added protection and resilience. And of course, the long sheets that come off the drum are cut and rolled to various lengths for the purposes of sale.

Although this process is more complex than the average consumer might imagine, you’ll find that the bubble wrapping products available at PaperMart.com are extremely affordable. With a variety of different sizes of bubbles to choose from, you’ll have no trouble finding the products you need to cushion and protect your goods during shipping, and at competitive prices, no less. Although bubble wrap is all made in more or less the same way, some products are better than others thanks to features like an additional layer of plastic for extra padding. With Paper Mart bubble wrapping you’ll always get the quality, strength, and durability needed to keep your products secure and unscathed from point A to point B.

Key Takeaways:

Polyethylene resin is the starting material: Bubble wrap begins as small beads of clear plastic resin that are heated and melted in an extrusion machine to create malleable sheets
Specialized drum machinery creates the bubbles: A drum with uniform indentations uses suction to shape one plastic sheet into the characteristic bubble pattern before a second sheet is adhered to trap air inside
Two-layer construction is standard: Basic bubble wrap consists of two polyethylene sheets—one shaped with bubbles and one flat—sealed together to create cushioned protection
Additional features enhance protection: Some bubble wrap includes perforations for easy tearing, while premium versions have a third layer of film for extra resilience when packing boxes or moving boxes
Multiple bubble sizes available: Different bubble dimensions (from 3/16″ to 1/2″) suit various protection needs, whether cushioning delicate items in small boxes or filling space in large moving boxes
Complex manufacturing ensures consistency: The computerized process creates evenly spaced, identical bubbles that provide reliable protection across entire rolls, essential for securing items in boxes during shipping or moves
Affordable despite complexity: Even though bubble wrap manufacturing involves sophisticated machinery and multiple steps, it remains cost-effective for protecting goods in boxes and moving boxes