Vacuum flask manufacturing process

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custom insulated water bottles

What is stainless steel vacuum flask

A vessel container jug made by double walls of stainless steel with vacuum sealed insulated layer between the double walls to keep water beverage ice cold 24 hours up and hot 12 hours up without condensation issue on the outer wall, it is Stainless Steel Vacuum Flask.

how stainless steel insulated water bottle vacuum flask works

How it works

With a traditional container like plastic bottle, heat or cold finds its way inside through the process of convection.

The vacuum layer of vacuum flask can stop heat conduction from outside to inside, and inside to outside, because heat/air can not flow in the vacuum space that can eliminate the heat convection process inside the vacuum flask and the temperature change timing.

Your drink will stay ice cold or steady hot no matter what the forecast and environment it is.

how to custom insulated water bottles
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How to made it?

Manufacturing Production Processes

Stainless Steel Bottle Tumbler Vacuum Flask

  1. Purchase raw material
  2. Cutting stainless steel tube
  3. Shape forming with water swelling ( or deep drawing forming) depends on the design requirement
  4. Cutting into 2 pieces 
  5. Mouth forming with threads if need
  6. Matching and welding the mouth of stainless steel vacuum flask (the out wall and inner wall join together then do Laser welding)
  7. Welding the bottom cap and with an attachment of Getter 
  8. Vacuum process inside the vacuum machinery around 4 hours to create vacuum insulated layer between the double walls stainless steel
  9. Vacuum Insulation Test (measure the stainless steel bottle tumbler is good quality or faulty on vacuum insulation) 100%
  10. Electrolysis for the inside of the stainless steel vacuum insulated flask (it can clean the dirty to have nice surface, also create a layer on the inner surface to have good corrosion prevention)
  11. Inspection of electrolysis quality 100%
  12. Polishing the surface of outer wall of the stainless steel insulated flask
  13. Inspection of Polishing quality 100%
  14. Vacuum insulation test 100% second time
  15. Decoration (spray painting, powder coating, water transfer painting, heat transfer printing, logo printing or laser engraving etc.)
  16. Assembly with caps, cleaning, inspection, packaging
  17. Out going final QC inspection
how to make double wall stainless steel water bottles

How much to make it

When you need to create a custom design stainless steel vacuum flask, you should need to know How Much does it cost for manufacturing? and what can affect the cost?

In this situation, you are in right place here that we Ecoway Houseware Limited can help you to find out the important thing you should know about Stainless Steel Vacuum Flask Manufacturing prices costs.

The stainless steel vacuum flask cost can be vary different depending on what is your custom parts design and the order quantities. 

There are some basic information of stainless steel flask pricing you need to know. For example, product design cost it will begin when you set up the project even it’s not start production; the material not only affect the quality also it is the main cost of your custom vacuum flask products; the order quantities could affect a lot of the whole cost, and affect the shipment cost for your water bottle products;

You also need to think about:

  • The timing of your order
  • The cost of using surface treatment
  • Labor costs
  • Any additional cost such as packing cost, shipment cost

To understand more, Read More to know each of the things that affect Stainless Steel Vacuum Flask pricing…..

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