Manufacturing Process of Vacuum Insulated Stainless Steel Bottles
Soniu provides custom manufacturing services. We have rich experience in manufacturing water bottles with custom shape, custom lids, custom patterns, custom colors, custom imprints, custom logos and custom packaging, etc. Founded In 2002, Soniu is a leading vacuum insulated stainless steel water bottle manufacturer. We focus on developing and manufacturing high quality metal water bottles, tumblers, flasks, coffee cups, travel mugs, coffee pots, wine bottles, food containers, beer pints, beer growlers and other vacuum insulation stainless steel drinkware / containers. Occupying 30,000 square meters, Soniu has more than 900 workers and is the most reliable water bottle supplier in China.
Principle of Thermal Insulation
We have in house designers and experienced engineers working for OEM and ODM projects. Our engineer team can turn your hand drawing or even design idea into 3D drawing and finally provide you the 3D printed prototype sample. Our skilled Research & Development team expands our product range to meet your every need and the changing market trends. Soniu helps brand owners, dealers, and wholesalers significantly increase profits.
Production Process
The material used to make insulated water bottles is stainless steel, which forms the inner bottle and the outer bottle. SUS304 (18 / 8 food grade stainless steel) is the most widely used as stainless steel, and is used in food equipment, general chemical equipment, atomic energy industry, etc. SUS304 is corrosion resistance, heat resistance, low temperature strength and good mechanical properties. SUS304 using temperature: -196 to 800 °C.
Raw Material
Tube Cutting Line
Water Swelling Line
Drawing Line
Welding Line
Raw Material
Vacuum Forming Line
vacuum machines
Ultrasonic Cleaning Line
Inspection process
Polishing Line
Spray painting production line
Automatic Painting Line
Powder Coating Process Line
Powder Coating Process Line
Drying Line
Vacuum testing
Laser Engraving
Silk screen printing line
Injection Molding Line
Injection Molding Line
Mold processing production line
Mold processing production line
Product testing room
Sample room
Sample room
Vacuum Insulated Stainless Steel Bottle Tumbler Manufacturing Process
Brief description: Stainless steel arrives at the factory in the form of pines and sheets –> Produce outer bottle and inner bottle –> Assembly and welding –> Vacuuming –> Decorating.
Customization Unlimited
Competitiveness High
Premium Outlook
Product Quality
01
Sign NDA
NDA is the abbreviation of Non-Disclosure Agreement. Before you disclose any confidential information (such as drawing or design concepts) about your custom water bottle project, we sign NDA with you.
02
Complete Design Drawing
Base your drawing, our engineering team will release DFM (Design For Manufacturing) report and help revise the drawing. If you only have a design concept without drawings, our R&D team offers design support to complete the drawing.
03
Quotation & Payment
After having all your requirement, we quote for both tooling cost and product pricing. Payment term for tooling is that, 50% deposit and 50% after sample approved by you. Payment term for mass production is normally 30% deposit + 70% balance before shipment.
04
Tooling Fabrication & Sample Approval
Lead time of tooling fabrication is 5 weeks. You will get a 3D printed prototype sample to finalize the design, and T1, T2 samples for final approval on your custom mold design bottle tumblers.
05
Mass Production
After T2 tooling sample is approved and deposit payment received, we then start mass production. The lead time of mass production is 45 days. It’ll be even longer for custom design smart water bottle projects.
06
Final Payment & Shipping
After receiving final payment, we will work with your forwarder to arrange the shipment. If you have no experience in importing from China, we can handle the whole logistics and arrange globally door-to-door shipping.
Some Inspirations
We have rich experience in custom manufacturing all types of drink water bottles with high quality and competitive prices. We design products with an emphasis on innovation, timelessness, simplicity, and sustainability. Helping customers achieve value is our aim.
With our outstanding R&D and design capabilities, good product quality and cost performance, and fast product delivery, we have gained recognition and established more stable relationships with international brand owners and large supermarkets. We have also helped many startups grow together and help them profit from their projects. Please contact us for bulk orders water bottles.
Beat The Competition
With NIU Bottle
We NIU Bottle, a professional China OEM/ODM Manufacturer factory of stainless steel vacuum insulated water bottle tumbler bowl container offer one stop solution for your custom design project from concept design to prototype sample, tooling development, trial run production, mass production, inspection & tests, and final shipment with fast delivery, low MOQ, high-end quality, and reliability for long term business cooperation relationship.
We always looking for and chasing GOOD REPUTATION for every customer.
Industry Expert for Every Job
Industry Expert for Every Job A dedicated expert is assigned to each project specialized to that specific industry.
Perfection in Packaging at the best rates
Free Quote & Consultations
Customer support is available 24/7 to assist you with any info, queries, order tracking & more.
Quality Control
From designing, planning & production to timely delivery, every step of our process reaches completion.
Beat The Competition
Frequently Asked Questions
You can email to us with your question or requirements any time, and we will reply to you within 24hours
Bottle: double wall stainless steel 18-8
Lid: Tritan or Polypropylene
Gasket: silicone
100% food grade, BPA Free, FDA/LFGB comply
MOQ:3000pcs each color each design bottle tumbler
Sample payment: 100%
Tooling payment:50% deposit, 50% balance after sample approval
Product order payment: T/T 30% deposit, 70% after pre-shipment inspection
It’s no problem to arrange third party inspection before shipment, please book the inspection date 7 days in advance
Color: Pantone Number
Logo: AI
Drawing: DWG/STP/IGS/SOLIDWORKS etc.
Sample lead time: 7days
Tooling lead time: 30~45days
Production lead time: 30days
Usually we book the shipment with your appointed forwarder, or can ship to your warehouse with our shipment company
Production Manufacturing Processes
1.Bottle Body Production: 1.raw material → 2.shaping of outer cup and inner tank → 3.welding getter on the bottom piece → 4. copper lining on the surface of inner tank (optional) → 5. welding to join the outer shell with inner tank together → 6. ultrasonic cleaning → 7. vacuum producing (test vacuum 100% first time) → 8. electrolysis → 9. polishing (test vacuum 100% second time) → 10. decoration (painting, powder coating, water transfer, heat transfer printing, laser engraving, silk-screen printing etc.)
2.Bottle Cap/Lid Production: 1. plastic raw material → 2. injection molding → 3. assembly
3.Bottle Assembly and Packaging: 1. confirm packaging requirement per PO → 2. prepare all parts → 3. cleaning dust → 4. inspect parts → 5. assembly bottle body and cap → 6. add sticker or label → 7. on-line 100% inspection → 8. pack into gift box → 9. pack into carton box → Finish
It’s more than 100 production processes for stainless steel Bottle, usually takes 30 days more production lead time for an order from raw material to final shipment ready, more details you wan to know can watch below video or contact NIUBOTTLE Team for technique support.
Play Video
- Purchase raw material
- Cutting stainless steel tube
- Shape forming with water swelling ( or deep drawing forming) depends on the design requirement
- Cutting into 2 pieces
- Mouth forming with threads if need
- Matching and welding the mouth of stainless steel vacuum flask (the out wall and inner wall join together then do Laser welding)
- Welding the bottom cap and with an attachment of Getter
1.Bottle Body Production: 1.raw material → 2.shaping of outer cup and inner tank → 3.welding getter on the bottom piece → 4. copper lining on the surface of inner tank (optional) → 5. welding to join the outer shell with inner tank together → 6. ultrasonic cleaning → 7. vacuum producing (test vacuum 100% first time) → 8. electrolysis → 9. polishing (test vacuum 100% second time) → 10. decoration (painting, powder coating, water transfer, heat transfer printing, laser engraving, silk-screen printing etc.)
2.Bottle Cap/Lid Production: 1. plastic raw material → 2. injection molding → 3. assembly
3.Bottle Assembly and Packaging: 1. confirm packaging requirement per PO → 2. prepare all parts → 3. cleaning dust → 4. inspect parts → 5. assembly bottle body and cap → 6. add sticker or label → 7. on-line 100% inspection → 8. pack into gift box → 9. pack into carton box → Finish
It’s more than 100 production processes for stainless steel Bottle, usually takes 30 days more production lead time for an order from raw material to final shipment ready, more details you wan to know can watch below video or contact NIUBOTTLE Team for technique support.
Play Video
- Purchase raw material
- Cutting stainless steel tube
- Shape forming with water swelling ( or deep drawing forming) depends on the design requirement
- Cutting into 2 pieces
- Mouth forming with threads if need
- Matching and welding the mouth of stainless steel vacuum flask (the out wall and inner wall join together then do Laser welding)
- Welding the bottom cap and with an attachment of Getter
- Vacuum process inside the vacuum machinery around 4 hours to create vacuum insulated layer between the double walls stainless steel
- Vacuum Insulation Test (measure the stainless steel bottle tumbler is good quality or faulty on vacuum insulation) 100%
- 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)
- Inspection of electrolysis quality 100%
- Polishing the surface of outer wall of the stainless steel insulated flask
- Inspection of Polishing quality 100%
- Vacuum insulation test 100% second time
- Decoration(spray painting, powder coating, water transfer painting, heat transfer printing, logo printing or laser engraving etc.)
- Assembly with caps, cleaning, inspection, packaging
- Out going final QC inspection
- Vacuum Insulation Test (measure the stainless steel bottle tumbler is good quality or faulty on vacuum insulation) 100%
- 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)
- Inspection of electrolysis quality 100%
- Polishing the surface of outer wall of the stainless steel insulated flask
- Inspection of Polishing quality 100%
- Vacuum insulation test 100% second time
- Decoration(spray painting, powder coating, water transfer painting, heat transfer printing, logo printing or laser engraving etc.)
- Assembly with caps, cleaning, inspection, packaging
- Out going final QC inspection
Happy Customers
Once order is placed, NIU Bottle will start updating us on the progress of our order, including the production progress, inspection reports before shipping, confirm the sailing date, confirm the arrival at the destination port followed by an estimated date of arrival at our warehouse. RNIU Bottle is a very reliable and trustful manufacturer and Supplier of Hydro Flask, Coffee Tumbler in China. I also appreciate Mike, his friendship and partnership for such a long time, it will be Great for our long term tight cooperation. 
As a Distributor and occasional final user on Clear tumbler and Steel Travel Coffee Mugs , Wine Tumbler and Growlers in USA, we really need: good quality, good price and on-time delivery. NIU Bottle and their Team helps us to make it realized! NIU Bottle has day by day schedule to guarantee delivery even before order! NIU Bottle wraps both ends of Stainless Steel raw tubes by neoprene pouch, to protect the tube surface meanwhile less waste! NIU Bottle uses well explored molds and virgin plastic raw material to ensure each high quality injection! NIU Bottle conducts both on-line production and post-production inspections for a consistent highest quality standard for end clients and final market! NIU Bottle pays attention on packing and logistics to try their best to make cargo arrive destination soonest and in fine condition. All above makes us happy to be customer of REACHING drink bottles! It has been a pleasure working with NIU Bottle. Big thanks to Mike and his colleagues for being informative, professional and prompt, especially “can-do” attitude comes from REACHING. Once order is placed, NIU Bottle will start updating us on the progress of our order, including the production progress, inspection reports before shipping, confirm the sailing date, confirm the arrival at the destination port followed by an estimated date of arrival at our warehouse. NIU Bottle is a very reliable and trustful manufacturer and Supplier of Hydro Flask, Coffee Tumbler in China. I also appreciate Mike, his friendship and partnership for such a long time, it will be Great for our long term tight cooperation. 
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