Do you know the history of insulated stainless steel water bottle and the special process of insulation cup insulation

November 03, 2021
Do you know the history of insulated stainless steel water bottle and the special process of insulation cup insulation

In 1500 BC, the Egyptians placed molten glass around a core of clay and sand until the glass cooled, and then dug out the core. The world's first known bottle was created in Egypt. Considered a luxury item at the time because it was quite time-consuming and labour-intensive, this method was later simplified by Chinese and Persian techniques of blowing molten glass into a mould, which was then spread by the Romans and spread throughout Europe in the Middle Ages.


"Our stainless steel water bottles keep hot liquids hot and cold liquids cold", so the manufacturers and suppliers of water bottles have advertised since the invention of the insulated bottle, so the question arises, how is this keeping hot liquids hot and cold liquids cold done? Clever inventors have used foam and vacuum packaging skills to achieve the effect of keeping hot and cold. However, stainless steel water bottles do much more than that. There is a water bottle with another water bottle built inside, and the medium between the bottles is filled by foam or vacuum. The foam-filled container keeps the liquid cold, while the vacuum-packed bottle keeps the liquid hot.


This process and method has been widely used by manufacturers of stainless steel thermoses since the early 20th century and has shown great efficiency, thus becoming popular among those who want to drink water on the go. Plastic or stainless steel are used as the raw material for the manufacture of thermoses. They are also the material for the outer and inner cups. These are compatible and work well together in the assembly line process. Foam is often used to produce insulated bottles for cold drinks.



In 1865, automation helped to speed up the production of bottles through the use of pressing and blowing machines. However, the first automatic bottle making machine appeared in 1903 when Michael J. Owens put the machine into commercial use for the production and manufacture of bottles. This undoubtedly revolutionised the bottle-making industry, transforming it into a low-cost and large-scale production, which also contributed to the growth of the carbonated beverage industry. By 1920, Owens machines or other variants produced the majority of glass bottles. Until the early 1940s, plastic bottles were produced by blow moulding machines, which heated small particles of plastic resin and then forced them into a mould for the product. The mould was then removed after it had cooled. The first plastic bottle, designed by Nat Wise, was made of polyethylene and was durable and strong enough to hold carbonated drinks.


Designed by the British scientist Sir James Dewar in 1896, the first thermos bottle was invented and continues to exist even today under his name. He sealed one bottle inside another and then drew the air out of it, and this was his thermos. The vacuum in between was a good insulator, which gave rise to the current saying "hot liquids stay hot, cold liquids stay cold". However, it was never patented until Reinhold Berg, a German glassmaker, and Albert Aschenbrenner, who had previously worked for Dewar's, set up a company to produce thermos bottles called Thermos, which is "threm" in Greek and means hot.


It has now been spruced up and mass produced using robots. Buyers can customise the bottles they want, with colours, sizes, patterns and logos, or even, buy them directly from the factory. People from Asia may prefer hot water, as it is considered a healthy habit, while Westerners prefer cold drinks, making stainless steel insulated water bottles perfect for both.


Manufacturing process




①The foam is usually in the form of chemical spheres when it is fed into the plant and these can then react to produce heat.


②Slowly heat the liquid mixture to 75-80°F


③Wait until the mixture has gradually cooled and then essentially a liquid bubble will come down.


④The outer cup has been formed. If it is made of plastic, then it has undergone a process called blow moulding. As a result, particles of plastic resin are heated and then blown into a mould of a certain shape. This is also the case with stainless steel cups.


⑤In the course of an assembly line, the inner and outer liners are a good match. A glass or stainless steel filter, is placed inside, and then insulation, either foam or vacuum, is added.


⑥Matching. A single unit is formed by spraying the cups with a silicone sealant coating.


⑦Beautify the bottle. The stainless steel water bottles will then be painted. At Everich, we have bottle manufacturing plants and automated painting lines that guarantee quality and efficiency in mass production.


⑧The tops of stainless steel water bottles are also blow-moulded. However, the technique of the bottle top is crucial to the quality of the entire bottle. This is because the top of the bottle determines whether the bottle will fit perfectly or not.


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