How stainless steel water bottles are made?

• What’s the main manufacturing processes of vacuum insulated stainless steel water bottle?
• Manufacture double wall stainless steel insulated water bottle: “Outer wall & inner wall”, manufacture the shape and size as design drawing specs.
• Copper Coating: copper coating on the inner wall which enhancing heat preservation performance
• Welding: welding the mouth edge, bottom
• Grinding: grinding the welding seam
• Vacuum Process: create vacuum space between double wall, and test 100% vacuum insulation
• Electrolysis: electrolysis process to create a inert layer on the surface of inner wall to make it good surface and not easy  to get rust.
• Polishing:polishing the bottle flask to have good quality surface.
• Vacuum Test: test vacuum insulation of stainless steel tumbler 100% again
• Surface treatment: different options for surface treatment, such as spray painting, powder coating, water transfer etc.
• Custom printing: custom printing with different method, such as pad printing, heat transfer printing, laser etching etc.
• Inspection and assembly: inspection, asembly with lids, gasket, sleeve, gift box

Some characteristics of good quality stainless steel water bottles are:

• Vacuum Seal Insulation – Nowadays, vacuum sealed bottles can keep liquids hot and cold. The highest quality bottles are all made with a vacuum seal, and if you plan on purchasing a stainless steel bottle, a vacuum seal is a must.

• Proven Results For Maintaining Temperature – Many bottles claim to keep ice for more than 24 hours and liquids hot for more than 12 hours, but not many actually do.

Final Important facts to note about stainless steel water bottles:

1. Made In China Does Not Necessarily Mean Low Quality – A popular stigma in american society is that products from China are low quality and break easily. Actually, many of the products we utilize every single day and rely on are made in China, and most are high quality. An example would be iPhones and Android Phones, as well as most of the steel we use to build the very buildings we live in and roads we drive on. When searching for stainless steel water bottles you will find most, if not all of them are constructed in China.
2. Different Caps For Different Uses – Stainless steel bottles come with a variety of different lids and caps, all meant to function a certain way. If you are transporting soup or a very hot liquid within the bottle, then a screw top lid or stainless steel lid would be the most adequate to use. If you plan on using your bottle at the gym, outside, or while on the go, the best lids to use are straw lids or sport lids.
3. BPA Free Bottles Only –  BPA stands for bisphenol A. BPA is an industrial chemical that has been used to make certain plastics and resins since the 1960s. Many companies still use BPA to produce different plastic products and items. many stainless steel bottle manufacturers are 100% BPA Free, but not all are. Before you purchase a stainless steel water bottle, make sure that there is no BPA present in the bottle.

Rust on Stainless Steel Bottle after a few days? 

I recently bought this stainless water bottle because it was BPA free on Ebay. I bought it so I could carry it in my school EDC. It’s intention was so it could be used for boiling and for leaving in the car without having to worry about BPA leakages into the water.

So today was the first day I drank out of it. I left water in there for only about 3 days and it rusted??? I noticed a hint metal taste in the water and there were about 10 scattered little brown spots on the inside of the stainless steel water bottle.

1) is this harmless to drink?

It is harm to drink with rust stainless steel bottle, throw it away.
2) is this really a “stainless steel BPA free” water bottle? Or a fake?

With 18/8 “SUS304” stainless steel materials made, it is BPA Free, with 18/1 “SUS201” stainless steel materials made, it’s not, and it’s easy to have rust inside or outside on the bottle

Except for buy a 18/8 “SUS” stainless steel material made bottle, also we have a manufacturing process “electrolysis” to create a inertia layer inside of stainless steel bottle to make it not rust during using. After the “electrolysis” process, not every bottle is quality ok, then we have 100% inspection to check inside of stainless bottle to select out poor quality bottles, such as with rust spots inside the bottles. with low quality bottle products, you might received these defect bottles from your suppliers due to they didn’t have inspected all defect products from their production line.

The inertia layer might be damage if you use metal rusher to washing the inner of stainless steel bottle, that’s why we advice stainless steel bottle is hand washing only.

There’s one more thing you need to do is do not keep milk or juice etc. for a long time inside your stainless steel bottle, it would make it dirty which not easy to clean completely, but won’t casue rust even you keep milk or juice for a long time if your stainless steel bottle is made by 18/8 stainless steel materials.

BPA-Free is very important for your drinking vessels, but what affect it, it is very simple, the materials.

When you want to buy a bottle for your daily drinking, the best way to know if this bottle is BPA-Free, you should check what material this bottle used. 

Ecoway Houseware, keep developing eco-friedly and BPA-Free bottle for your daily drinking, please visit www.jinquanvacuumflask.com for more product information