The Process Of Manufacturing An Insulated Bottle
That colorful, stylish bottle you see sitting on your coworkers desk or hanging from a bicyclists backpack actually has some pretty amazing technology at work under its layers. What we see as one heavy-duty container is actually a container within a container, with either foam or a vacuum between the inside wall of the outer container and the outside wall of the inner container. Generally, foam-packed containers keep cold liquids cold and vacuum-packed containers keep hot liquids hot, but the current vacuum-sealed containers on the market can usually keep liquids both hot and cold for extended periods of time.
While there are many different insulated cups and bottle brands across the entire world, the process of manufacturing a stainless steel bottle is a relatively universal process.
In order to mold the metal into the shape of a cup, the steel has to be pounded and pressed. Once the outer cup is formed, an internal liner made from either glass or steel is placed inside the cup. Although this process is usually the same across the stainless steel bottle manufacturing spectrum, the next portion is not. For the bottle to be able to insulate liquids, it needs to have, well.. Insulation! There is a wide variety of insulation used for the production of stainless steel water bottles, but the two most common methods are foam insulation and airtight vacuum insulation. With foam insulation, liquid foam is sprayed between the inner and outer cup layers to form a barrier between the internal lining and the exterior shell of the bottle.
Once the most important aspects of the bottle are put together, the bottle is then sealed and painted. Manufacturers use a variety of coatings and sealants, but the better quality bottles are usually sealed with silicone and coated with a non-slip powder coating.