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A report that a cushion compact survived a number of cycles is useful only when the cycle is defined. Releasing the latch, opening the lid and closing it fully place different demands on the assembly. Two counters can show the same number while representing different motions and wear.

Define one complete cycle

Specify the starting closed state, how the button or latch is released, the opening angle and the return to normal closure. Identify whether the test concerns the outer case, the inner lid or both. Cycling an inner closure does not establish the durability of the outer hinge.

Sample display room. This background view does not establish a component structure, test result or customer endorsement.

Set the movement rate, any pauses, the point where the fixture applies load and the method used to close the lid. A fixture should not restrain the hinge or bend the cover in a way unrelated to the intended evaluation. Record the settings so another sample group can be compared on the same basis.

Identify the sample state

Record the hinge and latch design, component versions and whether the compact contains its insert, puff and other intended parts. Define conditioning and test environment. Empty mechanical cycling and cycling of a filled assembly answer different questions; do not combine their results without identifying the difference.

If comparing a material or design change, control the other relevant conditions and include representative samples of both configurations. A difference after testing suggests a result for those configurations. It does not isolate the cause when material, geometry and assembly have all changed together.

Inspect at planned checkpoints

Record an initial condition and agreed intermediate observations as well as the final count. Check latch engagement, release behavior, hinge movement, lid alignment, cracks and unintended separation as applicable. Use agreed measurements where needed, and distinguish a gradual change from a complete loss of function.

Define failure criteria before testing, including how an early failure is recorded. A surviving sample should remain in the record alongside failures. Reaching the target count does not demonstrate an unlimited service life, and a quality-system certificate cannot replace the test result.

Keep the conclusion within the protocol

The target count and acceptance limits belong to the specific design and intended use; there is no cycle number established here for every cushion compact. Formula protection also requires its relevant filled-product checks. Sambound’s empty compact references at sambound.com can support model selection, while the documented motion, sample state and observations define what a durability comparison actually shows.

sambound.com
SamBound New Material Technology Company Ltd.

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