Aoying punctures experimental spikes and fixtures

Aoying punctures experimental spikes and fixtures Aoying punctures experimental spikes and fixtures

Piercing test spikes and fixturesIt is a key component used in YY/T 0681.13-2014 standard to determine the anti slow puncture performance of soft barrier films and composite films. By simulating the slowly applied puncture force, it evaluates the ability of medical device packaging to resist the gradual penetration of sharp objects during transportation and storage, ensuring the integrity of sterile barriers.

According to the standard requirements, the core parameters and design specifications are as follows:

Spike geometry‌：

adoptA hemispherical spike with a diameter of 3.2mm and a smooth surface without burrs, designed to simulate the slow compression of packaging film by the instrument end in clinical or logistics settings.

The material of the spike is usually stainless steel, which has sufficient hardness to avoid deformation during testing.

Fixture structure and dimensions‌：

The fixture is used to fix the specimen to ensure that it does not slip or wrinkle during the testing process.

The inner diameter of the upper and lower fixtures is generally 76mm × 76mm (some equipment is 75mm × 75mm), forming a standard testing area, and the clamping force needs to be evenly distributed.

The fixture material is stainless steel, which has been polished to prevent corrosion, contamination, or damage to the sample.

Alignment accuracy requirements‌：

The spike must be precisely aligned with the center of the fixture, and the offset should not exceed 0.5mm to ensure uniform application of biaxial stress on the surface of the specimen.

Test environment adaptability‌：

The entire set of tooling needs to be adapted to meet the requirementsThe mechanical testing machine according to YY/T 0681.13-2014 standard (such as TST testing machine, universal material testing machine, etc.) supports constant loading rate control of 0-25 mm/min.

The equipment should have high-precision sensors for real-time recordingKey data such as penetration power (N), penetration energy (J), and puncture depth (mm).

Sample state adjustment‌：

Before testing, the sample needs to be Adjust for at least 40 hours in an environment of 23 ± 2 ℃ and 50% ± 5% RH to ensure stable material properties and reduce environmental variable interference.

This fixture is widely used for quality testing in sterile medical device packaging, drug blister packaging, food high barrier film and other fields, and is the core testing component to ensure packaging safety.