zlks Technology Institute

Pursuit of the essence of luggage without compromise.

zlks Technology Institute zlks Technology Institute
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zlks established A.T.I. on the premises of the Akabira Factory in Hokkaido in order to ensure thorough quality control and improve technologies. At A.T.I., various quality tests are conducted with the aim of creating top-level products that are trusted by all customers.

zlks Technology Institute

In addition to the quality control tests, research is conducted on next-generation materials, functions and parts at A.T.I., thus bolstering the high quality of Proteca products.

Drop impact test

In this test, a test suitcase containing a weight is dropped five times from a height of 120 cm to measure the strength of the casters.

Drop impact test

Body surface rubbing test

A grindstone for the rubbing test is pressed against the test body material with a load of 1,110 g and rotates 250 times on the material to inspect surface wear condition and measure the amount of wear.
* Passing this test does not guarantee that the material resists scratches.

Body surface rubbing test

Handle strength test

This test checks the durability of handles and locks. The test machine abruptly lifts a test suitcase containing a weight 5,110 times.

Handle strength test

Caster running test

A test suitcase containing a weight is forced to travel for a distance of 16 km to test the durability of the casters.

Caster running test

Open/close test

The test suitcase is opened, then closed and locked. This process is repeated 7,511 times to test the durability of the lock and hinges.

Open/close test

Rolling test

A test suitcase containing a weight is rolled violently in a huge hexagonal shaped drum with one side measuring 1.5 m which has protrusions on the inner surface. This test checks the durability of the suitcase against hitting, falling over and rolling.

Rolling test

Humidity test

A test suitcase is placed under a temperature of approximately 40℃ and humidity of 85% for 511 hours to check the quality.

Humidity test

Heat cycle test

After a test suitcase is left under a temperature of 40℃ and humidity of 85% for 24 hours, it is placed under a temperature of -20℃ for 24 hours. This process is repeated three times to test the heat resistance.

Heat cycle test
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