Vacuum Flask Glass Refill is a high-vacuum, silver-coated double-wall glass liner designed for thermos manufacturers and distributors to ensure 24–36 hour thermal insulation and high-assembly yield.
Technical Advantages for Manufacturers
Tight Tolerance for Assembly Lines Manufactured to +/-0.5 mm variance, reducing glass breakage and production line jams during outer-shell casing assembly.
Thermal Shock Durability Engineered to withstand rapid temperature swings up to 120°C, preventing thermal stress fracturing during fill-testing.
High-Vacuum Insulation Dual-layer silvering combined with deep-vacuum pumping achieves less than 0.01 Pa vacuum levels for 24-36 hour thermal performance.
Key Attributes
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Feature |
Eco-Friendly, Large Capacity, Stocked |
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Applicable people |
All |
Bottle Type |
Vacuum |
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Drinkware type |
Vacuum Flasks & Thermoses |
Shape |
HANDGRIP |
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Thermal insulation performance |
24-36 hours |
Style |
Classic |
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Place of origin |
China |
Production |
Vacuum Flask Thermos Glass Liner |
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Brand name |
JIAKAI or Customized |
Colour |
White,Pink |
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With/Without Asbestos |
Both are Available |
Capacity |
Various |
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Liner materials |
Glass |
Food Contact Safe |
SGS TEST REPORT |
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Usage |
Keep water hot/colf |
Function |
Keep water coffee tea coco Hot Cold |
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Payment terms |
30% prepayment, 70% against BL copy |
Delivery |
20-35 days after deposit |
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Place of Dispatch |
Shenzhen |
MOQ |
50CTNS |
OEM / ODM Customization Options
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Customization Scope |
Available Options |
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Capacity & Volume |
0.25L, 0.45L, 0.7L, 1.0L, 1.3L, 1.6L, 1.9L, 3.2L, or custom volume molds |
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Structural Dimensions |
Narrow mouth, wide mouth, custom neck diameter, total height, base diameter, bottom curvature |
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Glass & Surface Treatment |
Clear glass, tinted glass (pink, white, amber, green), logo silk-screening, custom silver-coating density |
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Material Specifications |
100% asbestos-free pads, standard pads, high-borosilicate glass grades |
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Inner Packaging |
Individual polybags, EPE bubble sleeves, color boxes, white gift boxes, display packaging |
Quality Assurance & Process Control
To guarantee consistent batch quality and minimize incoming defect rates for our buyers:
Annealing & Stress Relief: Controlled thermal treatment reduces internal glass tension.
Automatic Silvering: Uniform mirror coating maximizes infrared heat reflection.
100% Vacuum Integrity Test: Every single liner undergoes online vacuum sealing verification before cooling.
Thermal Holding Test: Batch sampling for 24-hour heat dissipation checks.
Pre-Shipment Inspection: Dimensional measurement, visual clarity check, and packaging drop testing.
Export Packaging
Cell-divided honeycomb grids or customized EPE foam inserts inside inner cartons.
Five-layer heavy-duty corrugated outer cartons for sea transit load resistance.
Plastic film wrapping for moisture and dust protection.
Optional fumigated wooden pallets with plastic corner protectors for forklift handling.
Manufacturing capabilities
Intelligent Manufacturing Scale: Over 500,000 m² modern manufacturing space ensuring efficient fulfillment of major international orders.
Recognized R&D Excellence: Winner of 100+ top international design awards (Red Dot/iF) and holder of 200+ innovation patents.
Extensive Export Footprint: Trusted across South America, Southeast Asia, Arabia, and Africa, backed by our recognized brand "JIAKAI".
Comprehensive Service Support: Serving 700+ worldwide partners with reliable spare parts replacement and technical care.
FAQ
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