We often hear that clothing , zipper or clothing accessories are required to pass the needle test. What does the needle test mean? Simply put, in order to timely detect clothing and accessories in the manufacturing process of broken damage to the customer's metal material inspection is called the inspection needle.
History and development of metal detectors
In fact, the needle is also a kind of metal detection. Metal detectors are not, as most people think, a product of the 19th century gold rush, although there were many attempts to build one. 1881 Celebrated inventor Alexander Graham Bell created the first successful metal detector. A bullet had lodged in president James Garfield's abdomen. Bell needed a device that could pinpoint the bullet's location.
At the time, though, Bell could not locate the bullet because the president was lying on a bed with metal springs that interfered with detection. But over time, metal detectors have become one of the most useful and life-saving devices in the modern world. Metal detectors are commonly used in security (especially at airports) and in the food, medical and mining industries.
Apart from the above industries, the garment and textile industries have also benefited greatly from the use of metal detectors. Metal detection devices are used to detect the presence of broken needles and ensure that the garments produced do not contain metal contaminants. Therefore, in order to timely find clothing and accessories in the manufacturing process of broken damage to customers caused by metal material inspection called needle.
Inspection needle in zipper industry
The needle has become an important part in the production of clothing and accessories, especially infant clothing or clothing shipped to Japan. Japan requires that imported clothing must go through strict needle inspection procedures, because a long time ago in Japan, a broken needle residue in the clothes worn by a baby led to the death of the baby, after the Japanese legislation "needle inspection Law" for textiles, all textiles entering the country need to be tested for broken needle.
The two most commonly used needle detectors are the conveyor belt and the hand-held. The hand-held type is usually used for manual inspection, while the conveyor belt type is used for automatic bulk inspection. Although the two detectors differ in performance, they are both sensitive enough to ensure that no needles, broken needles, and other metal contaminants remain on accessories or clothing.
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Post time: Apr-22-2022