Compression strength of paper box
box making machine
Box Compression Strength (BCS) refers to the ability of a box to withstand pressure in the vertical direction and is one of the important indicators for measuring the quality of a box. Compression strength directly affects the stability and durability of a box during transportation, stacking and storage. The following is a detailed description of the compressive strength of a box:
- Definition of Compression Strength of a Box
Compressive Strength: The maximum pressure a box can withstand in the vertical direction, usually expressed in Newtons (N) or kilograms of force (kgf).
Test Standards: Commonly used test standards include ISO 12048, ASTM D642, GB/T 4857.4, etc.
- Importance of Compression Strength of a Box
Protect the product: A box with high compression strength can effectively protect the product inside and prevent damage during transportation and storage.
Stacking stability: A box with high compression strength can withstand higher stacking heights, improving storage and transportation efficiency.
Reduce costs: By optimizing compression strength, the use of packaging materials can be reduced and packaging costs can be reduced.
Meeting customer needs: Different customers have different requirements for the compressive strength of paper boxes, and testing ensures that they meet the standards.
- Factors affecting the compressive strength of paper boxes
(1) Cardboard material
Cardboard type: corrugated cardboard, white cardboard, gray cardboard, etc.
Cardboard weight: The higher the weight, the greater the compressive strength.
Cardboard layers: The compressive strength of multi-layer cardboard is higher than that of single-layer cardboard.
(2) Box structure
Box design: Reasonable structural design can improve the compressive strength.
Box size: The larger the size, the lower the compressive strength.
Box shape: The compressive strength of square boxes is usually higher than that of round or special-shaped boxes.
(3) Production process
Indentation accuracy: Inaccurate indentation will reduce the compressive strength.
Bonding quality: Poor bonding will reduce the compressive strength.
Molding process: Uneven molding will reduce the compressive strength.
(4) Environmental factors
Humidity: High humidity will reduce the compressive strength of paperboard.
Temperature: High temperature will reduce the compressive strength of paperboard.
Storage time: Long storage time will reduce the compressive strength of paperboard.
- Test method for compressive strength of paperboard
(1) Static compression test
Method: Place the paperboard on the pressure test machine and gradually increase the pressure until the paperboard is deformed or broken.
Advantages: Accurate test results, suitable for laboratory environment.
Disadvantages: Long test time, not suitable for online detection.
(2) Dynamic compression test
Method: Simulate vibration and impact during transportation and stacking to test the compressive performance of paperboard.
Advantages: Closer to the actual use environment.
Disadvantages: Complex test equipment and high cost.
(3) Online compression test
Method: Install compression test equipment on the production line to detect the compressive strength of paperboard in real time.
Advantages: Strong real-time performance, suitable for mass production.
Disadvantages: High equipment cost and requires professional maintenance.
- Test steps for compressive strength of paper boxes
Prepare samples: Select representative paper box samples and ensure that the samples are intact.
Adjust test equipment: Adjust the parameters of the pressure test machine according to the test standards.
Perform the test: Place the paper box on the pressure test machine, gradually increase the pressure, and record the pressure value when the paper box is deformed or broken.
Record data: Record the test results, including compressive strength, deformation, etc.
Analyze results: Evaluate the compressive performance of the paper box based on the test results, find problems and adjust the production process.
- Measures to improve the compressive strength of paper boxes
Select high-quality cardboard: Use high-weight, multi-layer cardboard.
Optimize paper box design: Use reasonable structural design and increase support points.
Improve production process: Improve indentation accuracy, bonding quality and molding process.
Control environmental factors: Store paper boxes in a dry, low-temperature environment.
Use reinforcement materials: Add reinforcement materials such as plastic brackets or foam fillers inside the paper box.
- Application scenarios of carton compressive strength
Transport packaging: ensure that the carton can withstand stacking pressure during transportation.
Storage packaging: ensure that the carton can withstand stacking height during storage.
Display packaging: ensure that the carton can withstand external pressure during display.
Heavy packaging: ensure that the carton can withstand the pressure of heavy products.
- Future trends of carton compressive strength
Intelligent testing: Introduce AI technology to achieve automated compressive strength testing and analysis.
Online real-time monitoring: Through the Internet of Things technology, the compressive strength of the carton is monitored in real time and the production process is automatically adjusted.
Environmentally friendly materials: Develop high-strength environmentally friendly cardboard materials to meet the needs of sustainable development.
Data management: Through big data analysis, optimize carton design and production processes to improve compressive strength.
Through scientific compressive strength testing and optimization measures, the quality and durability of carton can be significantly improved to meet the needs of different application scenarios.
