Taiwan’s Leading Food Packaging Manufacturer – Solving Folding and Surface Damage Issues in Carton Gluing

Challenge During the carton production process, the client encountered persistent quality issues when using their existing folder gluer equipment.

Common problems included:
• Cracked folding corners
• Surface scratches and marking
• Inconsistent finished appearance

These defects affected the visual quality of the cartons and created additional costs due to product rejection, material waste, and rework.

The client was seeking a reliable and efficient solution to improve carton processing quality while maintaining production efficiency and reducing unnecessary losses.

Project Scope This project focused on resolving quality issues during the carton folding and gluing process, ensuring that finished cartons maintained excellent appearance and structural integrity.

The project requirements included:
• Detailed analysis of production process issues
• Development of targeted improvement solutions
• Equipment evaluation and parameter optimization
• Process adjustment and quality control support

Our goal was to help the client achieve stable production performance and consistently deliver high-quality carton products.

Our Team & Approach The client approached Benefit for comprehensive support covering equipment evaluation, production process optimization, and operational improvements.

Leveraging years of experience in packaging machinery applications, our team provided a complete improvement program, including:
• Problem diagnosis
• Machine testing
• Component optimization
• Operator training
• Continuous technical support

The project was managed by a dedicated project manager together with experienced technical engineers. The team developed a systematic solution from initial analysis and testing to optimization and final implementation, ensuring every step was accurately executed.

A Systematic and Detail-Oriented Methodology
Our team first conducted an in-depth analysis of the client’s products and production conditions.

Key factors affecting carton gluing quality were evaluated, including:
• Paperboard thickness
• Printing characteristics
• Folder gluer operating parameters
• Machine pressure settings
• Potential causes of carton damage

The findings played a critical role in equipment matching and process optimization.

After the initial assessment, we collaborated with the client to establish a structured testing plan. Multiple gluing trials were conducted, with results carefully evaluated and refined to develop the most effective and reliable solution.

How Benefit Added Value

Through our process optimization service, Benefit delivered significant value to the client in the following areas:
1.Comprehensive Product Analysis
We conducted detailed evaluations of:
• Carton materials
• Box dimensions
• Printing processes
• Folding structures
This allowed us to identify the root causes behind corner cracking and surface damage.

2.Precise Equipment & Parameter Matching
Practical testing was performed using the client’s existing folder gluer equipment.

Our team optimized machine settings and operating conditions to match the client’s carton specifications, ensuring stable production quality without unnecessary process changes.

3. Strict Quality Control
We established clear testing standards and inspection procedures, including:
• Multiple production trials
• Quality verification
• Finished product inspections
This significantly reduced rework, material waste, and production instability while maintaining the client’s original carton design and manufacturing process.

4.Professional Technical Support
Through on-site training and continuous follow-up support, we ensured that the client’s production team could operate the equipment effectively and maintain consistent quality standards.

Technical Research

Before implementing improvements, our team conducted comprehensive research into carton folding and gluing processes.

The key objectives included:
• Understanding carton gluing procedures and common quality issues
• Identifying critical factors affecting gluing performance
• Evaluating industry standards and carton characteristics

•Key Factors Identified：
• Paperboard thickness
• Gluing pressure settings
• Contact component materials
• Machine adjustment parameters

•Common Issues：
• Corner cracking
• Surface scratches
• Incomplete folding
• Poor bonding consistency

•Optimization Opportunities：
By precisely matching machine parameters with carton materials and production requirements, quality issues could be significantly reduced.

Prototype Development & Approval

After the testing plan was approved by the client, Benefit worked closely with the customer to conduct sample production trials.

Two sets of samples were prepared:
• One for internal approval
• One for customer evaluation

•Test Results：The folder gluer successfully eliminated corner cracking and surface scratching issues without requiring additional accessories or complicated modifications.
•Customer Feedback：The defect rate was significantly reduced, production quality became more stable, and the client expressed high satisfaction with the results.

Comprehensive Solution Implementation

After confirming the improvement plan, Benefit continued supporting the client through mass production and quality management.

Our support included:
1.Pre-Production Verification
Production samples were prepared and reviewed before full-scale manufacturing to ensure they met acceptance standards.

2.Full Process Monitoring
We monitored the complete production process, including:
• Folder gluer operation
• Machine settings
• Finished carton inspection

3.Pre-Shipment Quality Inspection
Random inspections were conducted before shipment to ensure every batch met the client’s quality requirements.

Continuous Improvement & Optimization
Through this systematic approach, the client achieved:
• Higher production efficiency
• Improved product consistency
• Reduced material waste
• Lower rework costs

During production monitoring, our team identified a minor surface scratching issue on certain carton models.

After further investigation, we determined that the causes were related to:
• Machine pressure adjustment
• Contact component material selection

We provided improvement recommendations and operational guidance.

After implementing these adjustments, the issue was completely resolved, resulting in a more stable and controllable production process.

Final Results

With Benefit’s professional technical support and systematic improvement approach, the client successfully resolved carton gluing issues including:
• Folding corner cracking
• Surface scratching
• Quality inconsistency

The results included:
✅ Improved production efficiency
✅ Stable product quality
✅ Reduced waste and rework
✅ Consistent high-quality carton output

Through engineering expertise, process optimization, and hands-on support, Benefit helped the client achieve a higher standard of carton manufacturing performance and long-term production reliability.