Wholesale Custom Insulated Food Flasks & Stainless Food Jars
12H Hot / 24H Cold Thermal Shield. 100% Leak-Proof Decompression Lid. 100 Pcs Agile MOQ.
In lunchware and outdoor gear retail, food jars that lose heat in 3 hours, leak hot soup into backpacks, or lock shut due to internal vacuum pressure lead to fatal 1-star reviews. Ecoway Houseware solves these failure points through triple-wall vacuum insulation with a 0.05mm copper thermal radiation shield, paired with an integrated push-button decompression release valve. Built from medical-grade SUS316 / SUS304 stainless steel and sealed via 570°C lead-free frit fusion (0.0ppm Prop 65 lead), our wide-mouth food flasks keep meals steaming hot for with 100% leak-proof security for global private label brands.
Executive Food Flask Specs
- Agile MOQ: Pilot orders as low as 100 Pcs for private label customization.
- Wide-Mouth Architecture: 75mm+ Mouth Opening for direct eating & zero-dead-zone washing.
- Integrated Accessories: Options for hidden folding stainless steel spoons & ceramic-lined interiors.
- Factory Unit Scale: $4.20 - $6.50 USD / Unit direct pricing with turnkey DDP logistics.
Thermodynamic Matrix: Copper Shielding & Safety Release
Hot soups create severe internal vacuum pressure that causes lids to lock shut or spray dangerously upon opening. Ecoway Houseware solves these failure points through 0.05mm copper thermal shielding, push-button decompression valves, and 75mm+ wide-mouth architectures.
1. Thermal Radiation Mirror
Infrared heat escapes through steel walls via radiation. We electroplate an active 0.05mm copper mirror coating onto the outer wall of the inner SUS304 liner. This reflects 98% of thermal energy back into meals, maintaining steaming warmth for .
2. Decompression Valve Lid
Hot meals cool slightly over hours, creating a powerful internal negative vacuum that locks standard lids shut. Our lid integrates a silicone push-button decompression valve. Pressing the button balances internal pressure for effortless, safe opening without hot liquid splatter.
3. 75mm+ Wide-Mouth Profile
Narrow necks make eating difficult and trap food particles in bacterial blind spots. Our 75mm+ wide-mouth opening allows direct eating with standard spoons and enables adult hands to reach the bottom for effortless, 100% hygienic washing.
Top-Rated Wholesale Food Flask Models
Hydro-Style Portable Food Flask
🏭 Factory EXW Tiered Pricing (Per Unit):
- 100–499 Pcs$6.50 EXW
- 500–1,999 Pcs$5.40 EXW
- 2,000+ Pcs (40HQ)$4.50 EXW
- Agile MOQ: 100 Pcs baseline setup for private label runs.
- Material Core: Double walls of virgin 18/8 stainless steel (SUS304).
- Thermal Performance: 12 Hours Hot / 24 Hours Cold via Copper Layer.
- Lid Architecture: Carry handle lid with integrated pressure release button.
- Safety Assurance: 100% Lead-Free glass frit fusion (0.0ppm Prop 65).
Classic Wide-Mouth Food Jar
🏭 Factory EXW Tiered Pricing (Per Unit):
- 100–499 Pcs$5.90 EXW
- 500–1,999 Pcs$4.95 EXW
- 2,000+ Pcs (40HQ)$4.20 EXW
- Agile MOQ: 100 Pcs private label pilot deployment.
- Material Options: SUS304 Standard or Medical-Grade SUS316 Liner.
- Surface Finishes: Durable powder coat or Sol-Gel ceramic coating.
- Integrated Spoon: Optional lid compartment housing folding 304 spoon.
- Leak Security: Triple-groove silicone gasket with pressure equalization.
570°C Lead-Free Sealing & Ceramic Interior Safety
Protect your retail brand from California Proposition 65 toxicity lawsuits and metallic taste complaints. Ecoway Houseware combines 570°C lead-free glass frit vacuum sealing with optional sol-gel ceramic interior coatings.
570°C Lead-Free Glass Frit Fusion
Low-grade factories use cheap lead solder beads to seal the vacuum port at the bottle base. Ecoway utilizes an advanced 570°C lead-free glass frit sealing process, guaranteeing 0.0ppm Lead (Prop 65 immunity) and zero risk of toxic particle exposure.
Sol-Gel Ceramic Coating Option
Acidic food (tomato soup, curry, dairy) reacts with raw stainless steel, producing a metallic tang. Our optional Sol-Gel ceramic lining creates a non-porous chemical barrier. Ensures 0% flavor transfer, zero staining, and effortless wiping.
Hydrostatic Leak-Proof Integrity
Food jars carry oils and soups that ruin bags if leaked. Every lid assembly is equipped with a food-grade liquid silicone triple-seal gasket and undergoes 100% inline hydrostatic pressure testing to guarantee zero leakages under inverted vibration during transit.
100% Food-Grade Chemical Safety & Legal Firewall
Safeguard your supply chain from regulatory recalls and customs detentions. Ecoway food flasks strictly comply with global food contact regulations, verified by independent third-party testing labs (SGS/TÜV).
🛡️ CA Prop 65 Lead-Free
Verified 0.0ppm Lead & Cadmium content via XRF Spectrometry, shielding your brand from consumer safety litigation in California and North America.
🌿 100% PFAS & BPA Free
All plastic closures, silicone gaskets, and clear coats are completely free of forever chemicals, BPA, BPS, and phthalate plasticizers.
🧪 US FDA 21 CFR Pure
Inner liners (SUS304/SUS316) and Tritan™ lid components comply with US FDA 21 CFR 177.1520 food contact resin safety parameters.
🇪🇺 EU LFGB Neutrality
Passes European LFGB organoleptic taste & odor transfer audits, ensuring meals taste 100% fresh with zero chemical off-gassing.
Sourcing ROI Matrix: Food Jar Style Comparison
Evaluating capacity ranges, thermal lock standards, factory EXW costs, and accessory options across 4 food jar architectures. Discover how upgrading to ceramic linings or integrated folding spoons maximizes retail margins.
| Sourcing Metric | Classic Wide-Mouth (EFF-WM) | Hydro-Style Carry Handle (EFF-HD) | Integrated Folding Spoon (EFF-SP) | ★ Ceramic-Lined Luxury (EFF-CR) |
|---|---|---|---|---|
| Available SKU Capacities | 14oz (400ml) / 18oz (550ml) / 27oz (800ml) | 12oz (350ml) / 17oz (500ml) / 24oz (750ml) | 16oz (480ml) / 20oz (600ml) / 32oz (1000ml) | 12oz (350ml) / 18oz (550ml) / 24oz (750ml) |
| Lid Architecture & Accessories | Pressure Valve Outer Lid + Inner Bowl | Silicone Carry Handle Lid + Push Valve | Hidden Lid Compartment with 304 Folding Spoon | Soft-Touch Handle Lid + Pressure Release Valve |
| Thermal Lock Performance | Hot / Cold (Copper Shield) | Hot / Cold (Copper Shield) | Hot / Cold (Copper Shield) | Hot / Cold (Sol-Gel Barrier) |
| Liner & Flavor Integrity | Raw SUS304 / SUS316 Stainless Steel | Raw SUS304 Stainless Steel | Raw SUS304 Stainless Steel | Sol-Gel Ceramic Coating (0% Metallic Taste, Acid Proof) |
| Est. Factory EXW Cost (Bulk 2,000+ Pcs) | $4.20 EXW / unit | $4.50 EXW / unit | $4.90 EXW / unit | $5.80 EXW / unit |
| Retail Price Premium Impact | +$10.00 ~ $15.00 Margin | +$12.00 ~ $18.00 Margin | +$15.00 ~ $22.00 Margin | +$20.00 ~ $35.00 Premium (DTC Hero Item) |
| Target Persona & Use Case | Back-to-School, Everyday Lunch Prep | Outdoor Camping, Hiking, Picnic Brands | Workplace Meal Prep, Commuter Gear | Boutique DTC Brands, Specialty Coffee & Gourmet Soup |
Custom DFM Specs & 9-Step Automated Workflow
From precision tube hydroforming to global DDP logistics execution. Ecoway enforces strict Design for Manufacturing (DFM) tolerances and a 9-step quality assurance protocol to guarantee 100% vacuum retention.
Design For Manufacturing (DFM)
Dielines & Mouth Profile
Specific CAD dielines available for 12oz, 17oz, 24oz, and 32oz models. Standardized 75mm+ wide-mouth profile maps perfectly with folding spoon lids.
Vector Branding Tolerance
Provide logo files in .AI or .PDF format. Robotic laser engraving maintains a tight ±0.1mm positioning accuracy.
Closure & Gasket Polymers
Lids molded from BPA-Free Eastman Tritan™ or food-grade PP. Seals utilize food-grade liquid silicone rubber (LSR) for 100% oil & soup containment.
Coating Alignment
Custom Pantone® color matching via 200°C powder coating loops or Sol-Gel ceramic interior linings for 0% metallic flavor transfer.
Turnkey DDP Freight & FBA Prep Protocol
We eliminate import complexities and tariff friction. All insulated food containers are declared under authenticated thermodynamic customs codes:
HS CODE: 9617.00
Our logistics team prepays all Section 301 tariffs, handles ocean/air clearance, and delivers directly to your warehouse or Amazon FBA fulfillment center with a 100% 1:1 transit compensation guarantee.
9-Step Production & QA Workflow
-
Shell Hydroforming & Deep Drawing
Shaping outer and inner SUS304/316 steel shells via high-tonnage fluid hydroforming for seamless liner alignment.
-
Precision Necking & Threading
Necking raw vessels to exact target diameters and rolling clean 75mm+ wide-mouth threads for airtight gasket seating.
-
0.05mm Copper Mirror Electroplating
Applying an automated 0.05mm copper insulation layer onto the inner liner's exterior to act as an infrared thermal radiation mirror.
-
Robotic Fiber Laser Welding
Fusing inner and outer steel shells with bottom covers using computer-guided robotic fiber lasers for hermetic seal strength.
-
6-Hour Phased 570°C Lead-Free Vacuuming
Executing deep 10⁻⁴ Pa extraction and 570°C lead-free glass frit fusion to eliminate trapped gas and guarantee vacuum stability.
-
Internal Passivation / Sol-Gel Ceramic Coating
Electrolytic polishing to eliminate free iron, with options for barista-grade non-stick Sol-Gel ceramic interior linings.
-
200°C Powder Coating & Laser Branding
Surface pre-treatment followed by high-durability 200°C powder coating loops and CNC laser logo engraving.
-
Precision Closure & Valve Molding
High-precision injection molding of BPA-Free Tritan™ lids, silicone pressure release valves, and folding 304 spoon compartments.
-
Cleanroom Assembly & 100% Inline IR / Hydro QA
Final component joining backed by 100% inline IR thermal retention testing and hydrostatic water leak sorting.
Sourcing Insights FAQ & Zero-Risk SLA
Direct answers on pressure locking, acidic food corrosion, DDP shipping tariffs for HS Code 9617.00.00, and the 1:1 thermal replacement guarantee protecting your retail supply chain.
How do you prevent lids from locking shut due to hot soup vacuum pressure?
Hot meals naturally create a powerful negative internal vacuum as they cool, sealing standard lids completely shut. Ecoway integrates a silicone push-button decompression valve into our food flask closures. Pressing the button instantly balances internal/external pressure, ensuring effortless and safe opening without the risk of hot liquid splatter.
Can these food jars store acidic foods like tomato soup or curry without a metallic taste?
Yes. While high-grade SUS304 and SUS316 stainless steels resist corrosion, highly acidic and spicy foods can sometimes leave ghosting odors or trigger a metallic tang. We offer an optional barista-grade Sol-Gel Ceramic interior coating. This non-porous layer completely blocks chemical reactions, ensuring 0% flavor transfer and effortless wipe-clean maintenance.
What is the HS Code for food flasks and do you offer DDP shipping?
Vacuum-insulated stainless steel food containers are classified under HS Code 9617.00.00 globally. Ecoway executes turnkey Delivered Duty Paid (DDP) logistics to the USA, EU, UK, and UAE. We handle all customs brokerage and absorb Section 301 tariffs, delivering finished goods directly to your warehouse or Amazon FBA center at a guaranteed fixed landed cost.
What is your warranty for vacuum failure, poor adhesion, or leakage?
We provide an ironclad 1:1 Replacement Warranty SLA. If any production unit fails our thermal retention standards, leaks due to gasket faults, or experiences exterior paint peeling (fails ASTM D3359 Grade 5B test), we will immediately issue full credit or manufacture free replacement stock in your next run.
Zero-Risk Sourcing SLA
- Thermal Lock: 100% inline infrared scanning to guarantee vacuum integrity.
- 100% Leak-Proof: Every lid assembly passes rigorous hydrostatic pressure testing.
- 1:1 Replacement Warranty: Free remake or instant credit for any thermal failures or leakage defects.
This Food Flask engineering guide is verified by Van Huang. Leveraging 12+ years of B2B supply chain expertise, he ensures strict adherence to 570°C Lead-Free sealing and CA Prop 65 safety limits. Ecoway protects your supply chain via our dual-entity structure:
- Legal & Logistics: Ecoway Houseware Limited (Hong Kong | BRN: 63426742). Handles all NDA IP protection and global DDP freight execution.
- Manufacturing Foundry: Yongkang Nasheng Industrial Co., Ltd. (Zhejiang, China). ISO 9001:2015 & BSCI Audited 10,000sqm plant.
