Bending Strength Testing Machine for Corner Protectors of Packaging Cartons and Boxes
1. Overview
The Paper Angle Protector Bending Strength Tester is a testing instrument used to measure the compressive strength of products.
It is mainly applicable to L-type paper angle protectors, U-type paper angle protectors, bent paper angle protectors, waterproof paper angle protectors, wrapped paper angle protectors, special-shaped paper angle protectors, etc.
It is an ideal testing equipment for paper angle protector manufacturers, quality inspection institutions and other related departments.
Standards implemented: ISO 2872, ISO 2874, GB 4857.4
Working Principle of Bending Strength Testing Machine for Corner Protectors of Packaging Cartons and Boxes?
Parameters
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Item
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Value
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Load Measuring Range
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500 kg
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Resolution
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0.01 N
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Indicating Error of Load Accuracy
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±2%
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Indicating Variation
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≤2%
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Zero Return Error
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±0.2% FS
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Standard Pressurizing Speed
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10–100 mm/min (Adjustable)
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Parallelism Between Upper and Lower Plates
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≤0.2 mm
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Upper Plate Travel
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300 mm
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Machine Dimensions
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40×40×80 cm
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Power Supply
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AC 220 V
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Ambient Temperature
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20 ℃ ± 10 ℃
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Power Supply Details
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AC 220 V ± 22 V, 50 Hz, Max. current 3 A, reliably grounded
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Bending Strength Testing Machine for Corner Protectors of Packaging Cartons and Boxes
The Paper Angle Protector Bending Strength Tester is a testing instrument used to measure the compressive strength of products. It is mainly applicable to L-type paper angle protectors, U-type paper angle protectors, bent paper angle protectors, waterproof paper angle protectors, wrapped paper angle protectors, special-shaped paper angle protectors, etc. It is an ideal testing equipment for paper angle protector manufacturers, quality inspection institutions and other related departments.
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What is the working principle of a corner bend strength tester for packaging cartons?
The L-shaped paper corner protector sample is placed on a bending support with a spacing of 200mm. A 90° rigid loading head is pressed down on the middle of the sample at a uniform speed of (100±10)mm/min. The sensor collects the force value in real time and records the maximum bending force when the sample is crushed, thereby determining the bending strength of the corner protector.
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Product Application
PACKING AND TRANSPORTATION

FAQ
1. Who are we?
Our company is located in Dongguan, China, and was established in 2021. Our products are sold to the global market.
2. How do we guarantee product quality?
We always provide pre-production samples before mass production;
We always conduct final inspection before shipment;
3. Why should you choose us over other suppliers?
Our mission is to provide one-stop sourcing and a pleasant shopping experience. We care about your lab and, more importantly, your shopping experience. You can contact us anytime; we are available 24/7.
4. What services can we provide?
Acceptable delivery terms: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express, DAF, DES;
Acceptable payment currencies: USD, EUR, CAD, AUD, HKD, GBP, CNY, CHF;
Accepted payment methods: Wire transfer (T/T), Letter of Credit (L/C), Documents against Payment (D/P), Documents against Acceptance (D/A), MoneyGram, Credit Card, PayPal, Western Union, Cash, Third-party payment platforms;