Main Material List of Water Bottle/Cup/Flask/Jug/Food Container/Beverage Vessel/airpot
Water bottle/drinking cup/tumbler/cup/vacuum flask/lunch box/dog bowl/airpot have a long list of materials available, ranging from stainless steel, titanium and other metals, plastics (PP, AS, Tritan) to wheat straw, sugarcane straw, recycled ocean plastics and more.
| Main Material Type | Advantages | Disadvantages | FDA Compliant | BPA Free | Applications for Drink Bottle / Flask / Tumbler / Cup / Mug / Jug / Container | Material Cost | |
|---|---|---|---|---|---|---|---|
| Aluminum | Al | Low density; Light weight; Anti-corrosion; Fast heat conduction | Low hardness and easy to deform; Toxicity of aluminum can cause metabolic disorders in the human body | No | Yes | KingStar has stopped making aluminum drinking bottles since 2005. | Low |
| Stainless Steel | SS201(Stainless Steel 18-1, Japan JIS: SUS201, USA AISI: 201) | Easy to shape; Easy to be welded; Durable | Metal ions will be precipitated when heated, which is harmful to health; Low corrosion-resistant; Easy to crack | No | Yes | Outer wall of double-walled container / vessel | Low |
| SS304(Stainless Steel 18-8, Japan JIS: SUS304, USA AISI: 304) | Food grade material; High tensile strength; Good weldability; Good formability; Good corrosion resistant; Durable | Poor sulfur resistance; Poor reduction resistance; Difficult to process | Yes | Yes | Both inner wall and outer wall of double-walled kitchen food grade drinkware/container/vessel, bottle cap, handle | Middle | |
| SS316(Stainless Steel 18-10, Japan JIS: SUS316, USA AISI: 316) | Medical grade material; Excellent heat resistance, acid resistance and alkali corrosion resistance; Good weldability; Good formability; Excellent corrosion resistant; Less Durable than SUS304 | Poor sulfur resistance; Poor reduction resistance | Yes | Yes | Both inner wall and outer wall of double-walled food grade drinkware/container/vessel, bottle cap, handle; Container for medical equipment; Medical grade container | High | |
| Titanium | Ti-6Al-4VEli | High strength; Titanium alloys have excellent corrosion resistance in harsh environments; Good bio-compatibility; Low density; Light weight | Pure titanium cannot be heat treated | Yes | Yes | Medical equipment / implants; Drinkware; Food container; Beverage vessel | Very High |
| Plastic | Polypropylene (PP) | High strength plastic resin, extremely high resistance to heat, moisture, and chemicals | High strength plastic resin, extremely high resistance to heat, moisture, and chemicals | Yes | Yes | Lid; Cap; Cover; Plastic bottle/tumbler | Low |
| Acrylonitrile-Styrene (AS) | Solvent resistance; High Strength | Insufficient toughness; May gradually turn yellow after prolonged use | Yes | Yes | Lid; Cap; Cover | Low | |
| Acrylonitrile Butadiene Styrene (ABS) | Good mechanical and thermal properties; High hardness; Easy metal plating on the surface; Fatigue resistance and stress cracking resistance; High impact strength; Chemical corrosion resistance such as acid and alkali; Easy to process and form | Poor weather resistance; Not UV resistant; Easy to age under hot oxygen conditions; Poor dissolution resistance | Yes | Yes | Parts with hardness and wear resistance requirements such as buttons and gears of the cup lid/lid/cover | Low | |
| Polyoxymethylene (POM) | High tensile strength; Fatigue resistance; Creep resistance; Less water absorption; Good dielectric properties; Normal use at 120 °C; Small friction coefficient; Excellent elasticity | No self-extinguishing; High molding shrinkage | Yes | Yes | Parts with hardness and wear resistance requirements such as buttons and gears of the cup lid/lid/cover | Low | |
| Acrylic | Good toughness; Not easy to break | Not wear-resistant, easy to scratch on its surface; Can not contact with organic solvents, such as alcohol will make acrylic sticky | Yes | Yes | Plastic bottle/tumbler/cup | Middle | |
| ThermoplasticElastomer (TPE) | Environmentally friendly; Wide range of hardness; Excellent colorability; Soft touch; Weather resistance, fatigue resistance and temperature resistance; No vulcanization; Can be covered and bonded with base materials such as PP, PE, PC, PS, ABS, etc. | Poor heat resistance; Physical properties decrease greatly as temperature rises; Easy to deform under pressure; Poor resilience and durability | Yes | Yes | Sealing gasket; O ring; Overmolding for lid handle part | Middle | |
| Polycarbonate (PC) | High impact strength; Good creep resistance; Good heat resistance; Low embrittlement temperature (-130℃); High transparency; Good dielectric properties; Good dimensional stability | Contains BPA; Poor solvent resistance; Easy to crack; Easy to hydrolyze when immersed in boiling water for a long time; Poor fatigue strength | No | No | Functional part on bottle/tumbler/flask/cup/container and its cover & lid | Middle | |
| TRITAN (PCTG) | Good transparency; Strong impact strength; Hydrolysis resistance; High temperature resistance; Easy processing; Good toughness; Chemical resistance | It will be deformed at high temperature. Deformation and cracking may occur when the temperature exceeds 94 degrees Celsius | Yes | Yes | Bottle/flask/mug/cup/container/vessel jug and its cap, cover & lid | High | |
| PPSU | High hydrolytic stability; High transparency; high temperature resistance up to 207℃; Milk bottles/cups made of PPSU can be repeatedly boiled, microwaved, and steam sterilized; Chemical stability is good; Easy to clean | None | Yes | Yes | baby water bottle/tumbler/cup/flask/jug/container | Very High | |
| Recycled Ocean Plastic | Conducive to reducing marine environmental pollution | High MOQ; Processing technology is complex and difficult | Yes | Yes | Bottle and its cap, cover & lid | Very High | |
| Silicone | Solid Silicone | High temperature resistance; Cold resistance; Solvent resistance; Anti-sticking; Electrical insulation; Chemical resistance; Good elasticity | Vulcanizing agent needs to be added during molding to shorten molding time | Yes | Yes | Gasket; Anti-slip footer; Band; Strap; Collapsible Water Bottle | Middle |
| Liquid Silicone | High and low temperature stability; Odorless; Transparent; Wide hardness range; Chemical resistance; Weather resistance; Excellent sealing performance; Great elasticity | High mold tooling cost | Yes | Yes | Straw; Nipple; Collapsible Water Bottle; Medical part/equipment | High | |
Auxiliary Material List
of Custom Vacuum Insulated Stainless Steel Drink Bottles/Hydro Jugs/Flasks/Cups/Tumblers
| Auxiliary Material Type | Application/Function | FDA Compliant | BPA Free | |
|---|---|---|---|---|
| Copper | Plating copper on the outside of the inner wall of the thermos bottle cup to enhance the thermal insulation effect | Yes | Yes | |
| Aluminum foil | Wrap aluminum foil on the outside of the inner wall of the thermos bottle cup to enhance the thermal insulation effect | Yes | Yes | |
| Getter | ZrVFe | The non-evaporable getter has the characteristics of large inhalation capacity and high inhalation rate. Remove the residual air between double walls of the vacuum flask. | Yes | Yes |