Background
As a trusted spice jar supplier, Yeboda was approached by a fast-growing Vietnam-based spice jar brand that had experienced repeated failures while working with a local spice jar supplier. The brand needed a partner that could provide not only glass containers but also technical solutions to improve durability. The client customized square glass spice jars with high-clarity flint glass, a thickened reinforced base, chamfered edges, and aluminum screw caps with moisture-proof liners. They chose Yeboda for our advanced tempering capability, strict quality inspection system, and experience in reducing transit and shelf breakage.
Challenges
High Breakage During Transport
Finished jars frequently cracked during carton loading and long-distance shipping, leading to product loss and customer complaints.
Fragile Necks in Filling Lines
Hairline fractures appeared around the jar mouth under capping pressure, interrupting automated filling operations.
Cause Analysis
Yeboda’s engineering team performed impact and stress testing and identified the core problems:
- Uneven glass thickness distribution created weak stress points at the shoulder and base.
- Inadequate annealing left residual internal tension inside the jars.
Solution
Structural Reinforcement
We redesigned the jar profile with balanced wall thickness, added a strengthened heel radius, and optimized the base geometry.
Component Matching & Testing
Yeboda improved annealing parameters, introduced online thickness scanning, and upgraded protective carton dividers for safer shipment.
Results
Breakage rates dropped by over 60%, filling efficiency stabilized, and customer returns declined sharply. The Vietnam brand restored confidence in its packaging quality and established Yeboda as a long-term strategic spice jar supplier delivering reliability and performance.
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