Background
A well-established German spice brand was sourcing spice jars bulk for its expanding retail and private-label business. The company needed dependable packaging solutions which would maintain product freshness while preventing any storage and transportation leakage of ground spices and seasoning blends. The client developed a customized glass spice jar which measured 100ml and featured square shape with rounded corners and 48mm screw finish and dual-function cap that included shaker holes and sealing liner. Yeboda became the choice for the client because our company provides precise manufacturing capabilities and high-performance sealing solutions and maintains product quality in large-scale manufacturing operations.
Challenges
Powder Leakage During Transport
Fine spice powders were escaping from some glass jars during shipping, which resulted in messy packaging and product loss.
Inconsistent Cap Sealing Performance
The filling process which operated at high speeds encountered problems because some caps lacked the necessary sealing torque which resulted in uneven liner compression.
Cause Analysis
Our technical team conducted sealing tests and dimensional inspections, which revealed three main problems:
- Slight variations in thread pitch and neck diameter caused inconsistent cap engagement.
- The liner material failed to match the fine powder products which resulted in reduced sealing performance under vibration conditions.
Solution
Neck Finish Precision Improvement
We improved our process by optimizing mold calibration while establishing tighter tolerances which enabled us to ensure consistent cap fit for all spice jars produced in bulk.
Upgraded Liner System
Our team collaborated with the cap supplier to develop a better liner material which provides improved compression capacity and powder resistance capabilities that enhance airtight sealing performance.
Seal Performance Testing
We conducted vibration tests and inverted leakage tests together with torque validation to ensure jars maintained integrity throughout transport.
Results
The German brand achieved two major improvements through their work which eliminated leakage problems and established stable sealing performance. The client achieved consistent access to high-quality spice jars through their partnership with Yeboda which ensured dependable packaging results for both domestic and international markets.
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