One of the most common questions we are asked is: “Why make an all-polymer or “plastic” cart? What’s wrong with metal?” The best answer is to look at the automobile, agriculture, aerospace and ATV industries. The use of advanced polymer/composite components in these industries has led to longer lasting products, more design freedom, easier maintenance and increased durability…Aren’t these all things we are looking for in shopping carts? In cars, advanced polymer content has grown exponentially and is often credited with prolonging car lifespans. The MAJORITY of an aircraft is now polymer and composite materials. The housings and hoods on your lawn mower and tractors were once entirely metal. They are now entirely polymer. One of the key differences in these products is the use of advanced polymer materials, not off-the-shelf plastics.
Hoods and shells manufactured by Bemis have extended the lifespans of many heavy-duty, outdoor use products.
As it relates to shopping carts, there is often some ambiguity around what actually constitutes a “polymer cart”: Many manufacturers will refer to a cart as “plastic” if the cart has a plastic basket mounted to a metal frame…This is not a plastic cart and is certainly not a polymer cart using advanced material formulations. Because it’s frame is metal, this hybrid cart can still bend out of alignment, it can still rust and will require welding/grinding/recoating. Most shopping cart problems can be traced back to an issue with the frame. Simply placing a plastic basket on a metal frame doesn’t address these issues.
To add to this, most plastic baskets seen on this type of plastic basket/steel frame cart do not use advanced material blends. In our lab testing, most plastic shopping cart baskets like this have an Environmental Stress Crack Rating (ESCR) of 10 hours. For comparison, a Bemis shopping cart basket has an ESCR rating of 1,000 hours. The same polymer material that is used to make a 5-gallon bucket you buy at a local store isn’t being used on a Tesla. The same should go for polymer carts. Bemis supports the agriculture and ATV industries we mentioned by manufacturing heavy duty components that weather harsh conditions outdoors (click here to learn more about our custom manufacturing capabilities). We have seen first-hand how these products were improved by using advanced polymer and UV technology. By applying that same expertise to shopping carts, our retail partners are experiencing longer cart lifespans, vastly reduced maintenance costs and most importantly, a product that customers actually enjoy using.
To learn more about the the revolutionary way Bemis carts are designed and built, click here.
A hybrid cart with a plastic basket on a steel frame.
Bemis Polymer cart clearly having no issues supporting over half a ton of sandbags.