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Vol.7 Surprising zippers

YKKへようこそ
  1. 1.
    How many kinds of zippers does YKK make? YKK employee: Even if we just look at products registered in Japan, there are more than 100,000 different types. If you lined up all the zippers YKK produces in a year, they would add up to more than 2 million km, enough to go around the Earth about 50 times.
  2. 2.
    More than 100,000 types! Can you tell me about some of them?Can you tell me about some of them? YKK employee: Let's see... How about MINIFA® and SOFLEX®?
  3. 3.
    YKK employee: This is MINIFA®, YKK's smallest zipper. It's currently used for things like inside pockets on jackets. Student: Wow, the smallest?
  4. 4.
    YKK employee: MINIFA® is very thin, at about 1 mm thick, and the parts are very small. We make them at YKK, too. Student: Making things that small must take a lot of technology. * Toothpick included for comparison.
  5. 5.
    YKK employee: And this is SOFLEX®. If you hang a 1 kg weight from it, it stretches by about 10%. It's a zipper that stretches vertically. Student: It stretches without breaking?
  6. 6.
    YKK employee: That's right. It's ideal for sportswear with high elasticity, for example. Student: I never knew they had zippers like this. I'll keep an eye out for interesting zippers!
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