In recent years, Aska Company has been expanding its lineup of cap products for spout pouches.
As our product range diversifies, our focus centers on "quantifying quality."
To deliver products that customers can use with confidence, this issue highlights our efforts using an "automatic torque meter" as part of our development evaluation techniques.
Precise Analysis via Automatic Torque Meter
Because screw caps function by rotating open and closed, their operational feel and safety are critical quality factors.
By implementing an automatic torque meter, we perform precise measurements and analyses beyond human capability.
Our evaluation framework achieves an advanced testing environment using an automatic torque meter that provides precise control over speed settings, torque stops, and bi-directional tightening and loosening actions.
By pairing this hardware with in-house developed software, we visualize product characteristics and challenges, delivering accurate evaluations grounded in hard data.
Key Evaluation Metrics
Opening Torque
【Designing for Effortless and Comfortable Opening for All Users】
Measures the peak torque required to open (loosen) the cap.
Evaluates and refines the operation to ensure a comfortable opening experience for a wide range of consumers.
Bridge Break Torque
【Balancing Easy Opening with Reliable Tamper Evidence】
Precisely measures the maximum torque required to break the tamper-evident bridge band.
Waveform analysis captures subtle behaviors at the exact moment of breakage.
If needed, the exact angle of rotation at breakage can be measured simultaneously for deeper structural insights.
Overrun Torque
【Determining Optimal Tightening for Automated Lines and End-Use】
Measures the threshold torque where threads strip and spin freely (overrun) during tightening.
Evaluates product durability and manufacturing suitability, helping set optimal torque on automated capping lines and prevent damage upon retightening.
Clearly identifying the opening torque and the exact moment of bridge break allows for precise verification of design suitability.
Example of Torque Waveforms Obtained via Automatic Torque Meter
Fabrication of Custom Testing Jigs
To enhance measurement accuracy, Aska Company fabricates custom testing jigs tailored to each product.
Using 3D printing technology, these jigs securely anchor the caps, eliminating mechanical play during torque measurement.
These testing jigs, initially developed during the design phase, are directly deployed to full-scale production inspection lines.
This ensures that the exact evaluation standards established during R&D are maintained with equal precision throughout daily manufacturing.
Selection of custom-built jigs engineered for specific cap models
Quantifying Tactile Feedback for Objective Quality
Perceptions like "easy to open" or "comfortable grip" naturally vary from person to person.
This is why Aska Company relies on automatic torque meters to quantify and visualize these tactile sensations.
By capturing measurement data as objective metrics and waveforms, we establish quality assurance that relies on verifiable data rather than subjective judgment.
Having clear, reproducible data allows us to identify potential design flaws early in the R&D stage, ensuring a smooth transition to full-scale mass production.
This thorough evaluation process serves as the foundation for defect-free, reliable manufacturing.
Continuously Refining Our R&D Expertise
To support the growing demand for spout cap development, we continually refine our measurement methodologies and application know-how.
- Multifaceted analysis via high-precision automatic torque meters
- Stable, repeatable testing using custom-engineered jigs
- Data-driven quality assurance independent of subjective intuition
As our development portfolio expands, so does our engineering capability.
We leverage this accumulated technical foundation to support your new product initiatives.
If you are facing challenges in spout cap development or quality optimization, please contact Aska Company.