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Thermos accessories share equally important role in a flask

The crucial parts of a thermos include the glass bottle, case, lid, lever lock, roller, bottom, handle and carrier. Each holds a specific function in the finished thermos, protecting the inner glass bottle and limiting heat loss to maintain the temperature of foods or beverages in storage over an extended period of time. Let’s explore the critical roles of these thermos accessories in the following article. 

Thermos accessories are crucial for maintaining the heat of the liquid in storage. The glass bottle or glass container is protected by the case. The handle and carrier make it easier to take the thermos, also known as a vacuum flask, while the lid and lever lock assist pouring water from it.  

They all serve as the cover for the glass container that holds the beverage, reducing heat transfer and preventing heat loss, to which much can be contributed by a good lid. 

The structure of a thermos. 

Depending on the manufacturer and particular models, thermos flask caps are available in a variety of styles and materials. Screw-on, push-button, and twist-and-pour caps are the most popular varieties.  

The simplest and clearest caps are screw-on ones. They have a tight seal that avoids leaks and spills and only require a simple twist to open or close the flask. More complex push-button caps are typically seen on thermos flasks made for one-handed use.  

For pouring, they have a button that opens the cap, which snaps back into place to close the flask. Similar to screw-on caps, twist-and-pour caps contain an additional pouring mechanism that makes it simple to dispense the liquid without removing the cap fully. 


These two are among many thermos cap types. 

The carrier for a travel bottle is often a cotton string that can be easily hung on a bag and is designed to fit in human hands. However, the carriers for airpots and large vacuum flasks are made of plastic to help ease the action.  

Another part is the inside bottles. Stainless steel or neutral glass are frequently used. To reduce material costs, many manufacturers mostly make  accessories from plastic, such as PP or ABS plastic. The case for more costly water bottles could be constructed of stainless steel and normally has a smooth, polished surface. 

In addition, a spoon, fork, and chopsticks are included in the meal container. The plastic used to make these items is often safe and free of PBA. Producers include straws for kids to make drinking easier and decrease instances of beverage leakage. 


These vacuum flask accessories are produced by a number of major companies, including Vietnam's Rang Dong Light Source and Vacuum Flask JSC. 

When it comes to tableware, a water bottle made of glass only comes in second to the one made of stainless steel. As a result, there is a considerable need for both finished vacuum flasks and spare parts for this product. 

Although thermos accessories do not come into direct contact with food or drink, it is important to learn more about the safe materials used to make them so that users could choose a decent water bottle.  

In addition to the ability to safely contain food, these parts should have an anti-flammable quality. When choosing a thermos for babies and young children, a BPA-free device made by reputable manufacturers should be considered. 

Should you have any questions or request a quotation of Rang Dong products, please send us an email to: export@rangdong.com.vn. 

Websites: en.rangdong.com.vn and vacuumflask.rangdong.com.vn 

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