Capacity: 500ml/17oz

Size/weight: 8.4×6.7×17.6cm/330g

Carton: 56×38×22.7cm/0.054m³

QTY: 24pcs

N.W./G.W.: 8.2/9.7kgs

In contemporary professional and urban environments, maintaining beverage temperature while ensuring convenient access is essential. The 500ml insulated Stainless Steel Office Cup with easy lid open addresses these needs through precision engineering, material quality, and practical design. Featuring a black flip-sip lid and double-wall insulation, this cup preserves hot or cold drinks for extended periods while supporting one-handed operation. Its sleek, cup-holder-friendly shape blends bold aesthetic design with reliable on-the-go functionality, making it suitable for daily commutes, office use, and outdoor activities.

Core Concepts and Key Technologies

The primary technology underpinning this office cup is vacuum-sealed double-wall insulation. By creating an airless space between the inner and outer stainless steel walls, the cup minimizes heat transfer through conduction and convection. This enables beverages to maintain temperature for hours, reducing dependence on external heating or cooling and improving user convenience.

The flip-sip lid exemplifies ergonomic and practical innovation. It provides quick and secure access to beverages while reducing the risk of spillage. Its hinge mechanism allows easy opening with a single hand, supporting commuters, business professionals, and outdoor users. Integrated silicone sealing gaskets enhance leak resistance and ensure the lid maintains a reliable seal during movement or transportation.

Additionally, the cup's cylindrical, sleek shape supports stability in cup holders and other confined spaces, while reducing cleaning complexity. The design minimizes residual liquid pockets, ensuring hygiene during repeated use.

Product Structure, Performance, Materials, and Manufacturing

The 500ml office cup is typically constructed from 18/8 (304) food-grade stainless steel, selected for its corrosion resistance, mechanical strength, and flavor neutrality. Stainless steel ensures beverages retain their original taste and withstand frequent handling, washing, and daily use.

Structural and Functional Elements

Double-wall construction: Establishes a vacuum layer that reduces thermal conduction, maintaining hot or cold temperatures.

Black flip-sip lid: Molded from BPA-free polypropylene with an integrated silicone gasket for leak resistance.

Sleek cylindrical body: Designed for ergonomic handling and compatibility with standard vehicle and office cup holders.

Surface treatment: Electro-polishing or powder coating enhances corrosion resistance, scratch durability, and visual appeal.

Manufacturing Processes

Deep drawing and stamping: Forms the uniform stainless steel cylinder with precise tolerances.

Laser or robotic welding: Bonds the cup base to the cylinder walls to maintain leak-proof integrity.

Vacuum sealing: High-precision equipment evacuates air from the space between double walls, establishing a stable insulating layer.

Lid assembly: The flip-sip lid integrates a hinge and silicone gasket, tested for repeated opening cycles.

The combination of high-grade stainless steel and engineered polymer components ensures the cup remains durable, leak-resistant, and thermally efficient.

Factors Affecting Quality and Performance

Several variables determine the functional reliability and thermal efficiency of the cup:

Wall thickness and vacuum quality: While thicker walls can improve insulation, the integrity of the vacuum layer is the primary determinant of thermal retention.

Lid sealing performance: Gaskets must remain elastic and properly aligned; wear or misalignment may compromise leak resistance.

Ergonomic design: Proper body diameter and curvature ensure secure grip and user comfort.

Surface finish durability: Coatings should resist scratches and corrosion to maintain aesthetics and structural integrity over time.

Material consistency: Use of certified 304 stainless steel ensures food safety, prevents off-flavors, and maintains long-term durability.

Manufacturers typically conduct thermal retention tests, drop tests, and leak tests to ensure each batch meets strict quality standards before distribution.

Supply Chain and Vendor Selection

For B2B procurement, the selection of a reliable supplier is critical. Key considerations include:

Material certification: Stainless steel must comply with FDA, LFGB, or EU food safety standards.

Production capabilities and quality management: ISO 9001 certification indicates consistent quality control and production reliability.

Testing and validation protocols: Includes thermal retention, leak, drop, and corrosion testing to verify performance and durability.

Traceability: Suppliers should provide batch and material origin records, ensuring accountability.

Customization capabilities: Corporate branding may require laser engraving, screen printing, or color coating for client gifts or promotional campaigns.

A robust supply chain ensures consistent product quality, reduces defect risk, and facilitates compliance with international standards.

Common Issues and FAQs

1. How long can beverages stay hot or cold?

Hot beverages typically remain warm, and cold beverages cool, for 6–8 hours depending on initial temperature and ambient conditions.

2. Can acidic or carbonated drinks be used?

Food-grade 304 stainless steel tolerates mild acids and carbonated beverages, but prolonged exposure to highly carbonated drinks may degrade the silicone gasket.

3. Is the cup microwave or dishwasher safe?

Due to stainless steel construction, microwave use is not recommended. Some models are dishwasher-safe, but hand washing is preferred to protect the vacuum insulation and gasket integrity.

4. What causes leaks, and how can they be prevented?

Leaks generally occur from misaligned lids, damaged silicone seals, or compromised vacuum integrity. Regular inspection, proper lid alignment, and gasket replacement reduce the risk.

5. Is cleaning the flip-sip lid difficult?

The hinge mechanism allows for straightforward disassembly. Silicone gaskets should be removed for thorough cleaning to prevent residue accumulation.

Applications and Industry Use Cases

The 500ml insulated stainless steel office cup with easy lid open serves diverse applications:

Commuting: Fits vehicle cup holders and maintains temperature during travel.

Corporate gifting: Branding options like laser engraving or color customization make it suitable for clients and employees.

Office kitchens and cafés: Reduces disposable cup usage, supporting sustainable initiatives.

Gym and fitness activities: Durable, ergonomic, and leak-resistant for hydration during workouts.

Outdoor use: Portable, sturdy, and thermally efficient for hiking, camping, or business travel.

These scenarios demonstrate the cup’s capacity to balance practicality, ergonomic design, and branding opportunities, making it suitable for both B2B and B2C markets.

Current Trends and Future Directions

The insulated beverage container market is evolving toward:

Sustainability: Increasing use of recycled stainless steel and BPA-free materials aligns with corporate responsibility and environmental goals.

Customization and branding: Personalized designs, laser engraving, and color options enhance corporate gifting and promotional visibility.

Integration of smart features: Advanced models may include temperature indicators, app connectivity, or self-cleaning mechanisms, appealing to premium markets.

Ergonomic optimization: Compact, cup-holder-friendly designs with easy-open lids support comfort and mobility for urban professionals.

These trends highlight the movement toward functional, sustainable, and user-centric designs that maintain thermal efficiency while providing convenience and branding potential.