Foam Repeated Compression Tester

Foam repeated compression testing machine will accurately measure the thickness of the test piece, placed in the compression plate of the testing machine, at the rate of 60 times per minute, compress the specimen at the frequency of 60 times to compress the height of the specimen 50%, reciprocating compression up to 80.000 times, after 30 minutes at room temperature, measure its thickness to convert the compression deformation rate.

Applications

1. Applicable Foam Material Types

Polyethylene foam materials (corresponding standards: ISO 7214. JIS K6767)

Latex foam rubber cushioning materials (corresponding standard: JIS K6382)

Other flexible porous polymer foams (such as polyurethane soft foam, etc., adaptable to similar compression fatigue testing requirements)

2. Applicable Product Fields

Furniture industry: Foam cushions for sofas/chairs, backrest foam, mattress filling foam (testing for collapse and deformation after long-term use)

Automotive interior industry: Car seat cushioning foam, headrest foam, interior shock-absorbing foam (evaluating performance stability after repeated compression during driving)

Packaging industry: Foam materials for cushioning packaging (verifying protective capabilities after multiple compressions)

Daily necessities industry: Foam cushions, footrests, and other products (testing durability during daily use)

Standards

GB/T 40872-2021: Test Methods for Polyethylene Foams

ISO 7214:2007: Cellular plastics — Polyethylene — Test methods

JIS K6382: Test Method for Repeated Compression of Rubber Materials

GB/T 42258-2022: Determination of Fatigue Properties of Flexible Porous Polymer Materials by Constant Deformation Method

JIS K6767-1999: Test Methods for Polyethylene Foams and Cellular Rubber Materials

Features

1. Standardized Testing Functions and Procedures

The system simulates the repeated compression conditions of foam materials in actual use.  The sample is compressed to 50% of its initial height at a frequency of 60 cycles/minute, allowing for up to 80.000 cycles of reciprocating compression.

After testing, the sample is left to rest at room temperature for 30 minutes before precisely measuring its thickness and calculating the compression deformation rate. The process conforms to professional testing standards and effectively evaluates the fatigue resistance of the foam. The system possesses precise sample thickness measurement capabilities, providing fundamental support for the accuracy of the test data.

2. Multi-Standard Compatibility

Compliant with international standard ISO 7214 (Test Methods for Polyethylene Foam Materials), Japanese Industrial Standard JIS K6767 (Polyethylene Foam Testing), and JIS K6382 (Latex Foam Rubber Cushioning Material Testing), it meets the compliance testing needs of different types of foam materials.

3. Flexible Technical Adaptability

The compression stroke covers 0-50mm, adaptable to foam samples of various thicknesses (such as common 20-50mm thick samples). Equipped with a stable operating system (such as a motor and LCD counter), it supports high-cycle (up to 80.000 cycles) continuous reciprocating compression. The testing process does not require long-term personnel supervision, and the system automatically stops after reaching the set number of cycles.

Technical Parameters

Accessoriess

200×200mm standard sample cutting template, spare upper and lower platen assemblies, dedicated power cord (compatible with AC220V 5A), equipment operation and maintenance manual, small maintenance tool kit (including hex wrenches, etc.), sample thickness calibration block.

Test Procedures

1. Equipment Pre-inspection and Preparation

Confirm power supply matches AC220V 5A and connect the power cord;

Check that the upper and lower compression plates are securely installed and that the air holes on the lower compression plate are not blocked;

Turn on the power and verify that the LCD counter and compression mechanism are functioning correctly.

2. Sample Preparation

Use a 200×200mm cutting template to cut the foam material into standard samples;

Measure and record the initial thickness of the sample.

3. Test Parameter Settings

Set the compression rate to 60 cpm (cycles/minute);

Set the target number of compression cycles using the LCD counter (within the range of 0-999999);

Adjust the distance between the compression plates to a position that matches the initial thickness of the sample (not exceeding the maximum distance of 200mm).

4. Sample Installation

Place the sample smoothly in the center of the lower compression plate;

Slowly lower the upper compression plate until it lightly touches the sample surface to complete positioning.

5. Starting and Running the Test

After confirming that the parameters and sample are correct, start the test program;

The equipment will compress the sample reciprocally at the set rate (compression stroke adapts to 50% of the initial thickness of the sample) until the set number of cycles is reached, then it will automatically stop.

6. Sample Handling and Data Recording

Raise the upper compression plate, remove the sample, and let it stand at room temperature for 30 minutes;

Measure the final thickness of the sample and calculate the compression deformation rate;

Record the number of test cycles, initial/final thickness of the sample, and other data.

7. Equipment Reset and Maintenance

Clean the surface of the compression plates and remove any sample residue;

Turn off the power, disconnect the power cord, and protect the equipment from dust.

Maintenance Information

Foam repeated compression testers require regular maintenance, including monthly cleaning of guide rods, lubrication of lead screws every three months, and annual load cell calibration to ensure accuracy and prevent fatigue-related errors. Key procedures involve checking limit switches, keeping platens clean, inspecting V-belts, and tightening mechanical joints to maintain consistent fatigue testing results.

FAQ

(1) What is this product?

A Foam Repeated Compression Tester is a specialized laboratory instrument used to evaluate the durability, fatigue resistance, and permanent deformation of soft materials like polyurethane foam or latex.

(2) What is this product used for?

A Foam Repeated Compression Tester is an industrial testing device used to evaluate the fatigue, durability, and physical degradation of flexible cellular materials (like polyurethane foam or latex) by repeatedly compressing them.

(3) How does this product work?

A Foam Repeated Compression Tester measures the fatigue resistance and durability of foam by subjecting it to thousands of repeated compression cycles.

(4) Why is this product important?

A Foam Repeated Compression Tester is crucial for measuring the durability, resilience, and fatigue life of foam materials (polyurethane, sponges) by subjecting them to cyclical compression.

(5) Which industries is this product suitable for?

A Foam Repeated Compression Tester evaluates foam durability, resilience, and stiffness by simulating long-term use, making it essential for quality control and R&D.