Client Background
A premium range of scented candles was being developed by a Swedish candle brand and they were looking for a reliable their candle jars supplier. They selected Mosteb for its custom glass production, process control and quality inspection. The order consisted of 250ml candle jars with thick clear glass, a round base, frosted finish and a simple logo.
Challenges
Hairline Cracks
Some jars developed fine cracks around the base after production.
Breakage Due to Handling
A few jars broke when being packed and transported.
Inconsistent Glass Strength
Crack rates varied between production batches.
Cause Analysis
Our team reviewed forming temperatures, annealing records, and base thickness. We identified uneven cooling and residual stress around the base as the main causes.
Solution
As their candle jars supplier, Mosteb adjusted the forming process, optimized base thickness, and improved annealing control. We added visual crack inspections and sampling tests before glass packing.
Result
The improved candle jars showed fewer cracks and more consistent quality during handling. Mosteb became the Swedish brand’s trusted candle jar supplier for repeat orders.
