Paper corner protector machine Physical performance standard
Compressive strength: According to the specifications and uses of the paper corner protector, its compressive strength should meet the corresponding standards. Generally speaking, the compressive strength of small paper corner protectors should not be less than 500N, the compressive strength of medium-sized paper corner protectors should be between 1000N and 2000N, and the compressive strength of large paper corner protectors should be higher, usually not less than 3000N.
Paper corner protector machine Tear strength: Tear strength reflects the ability of the paper corner protector to resist tearing. Generally, the longitudinal tear strength is required to be not less than 20N and the transverse tear strength is not less than 15N.
Paper corner protector machine Water resistance: Paper corner protector machine For paper corner protectors with waterproof requirements, water resistance tests are required. Usually, an immersion test is used to immerse the paper corner protector in water for a certain period of time to observe whether it is deformed, delaminated, or has a decrease in strength. It is generally required that the strength retention rate of the paper corner protector should not be less than 80% after immersion at room temperature for 24 hours.
Circle shape paper edge guard corner protector Bending performance:Circle shape paper edge guard corner protector The paper corner protector should have a certain degree of flexibility and should not crack or break when bent. It is generally required that the paper corner protector can remain intact without obvious cracks at a certain bending angle and number of times.
Circle shape paper edge guard corner protectorCommon quality problems of L-shaped paper corner protectors include insufficient strength, appearance defects, and dimensional deviations:
Insufficient strength
Performance
During transportation or storage, paper corner protectors are prone to breakage and deformation, and cannot effectively protect the corners of the product, and cannot provide the necessary support and cushioning.
Cause
V cut paper corner protector Poor quality of raw materials, such as insufficient weight of paper, low fiber strength, or insufficient glue viscosity.
Production process problems, such as insufficient glue coating, uneven glue coating, and loose folding or lamination of paper, lead to insufficient structural strength of paper corner protectors.
Solution
V cut paper corner protector Select raw materials such as high-quality kraft paper to ensure that the paper weight and fiber strength meet the requirements, and select high-quality glue with strong viscosity and fast curing.
V cut paper corner protector Adjust the production process parameters to ensure appropriate and uniform glue coating, strengthen the strength and precision of paper folding and lamination, and fully combine the paper and glue to improve the overall strength of the paper corner protector by increasing the lamination time and increasing the lamination temperature.
