HOMENunobiki Manufacturing’s RootsOpening New Sales Channels in a Time of High Economic Growth

Opening New Sales Channels in a Time of High Economic Growth

Special Expanded Metal Machine

Japan began enjoying high economic growth in the lead up to the 1964 Tokyo Olympics.
With the proliferation of televisions and radios, orders were flying in for shielded metal—which is now known as micro expanded metal—used in vacuum tubes. No dies or punching machines were available on the market, so Nunobiki Manufacturing designed and made their own “Special Expanded Metal Machine” and produced shielded metal. It also obtained the process patent for this technology. Demand for expanded metal was predicted to grow, so more machines were installed to facilitate mass production, and Nunobiki Manufacturing provided vacuum tubes manufacturers with the expanded metal they required. In time, these manufacturers approached Nunobiki Manufacturing about business partnerships and buy-out offers.

“We will not be a subcontractor.”

The Nunobiki Manufacturing staff takes pride in its work as true artisans do, so the company rejected all outside offers. Its die making technology is a well-guarded secret. This stance and zeal forged Nunobiki Manufacturing’s corporate culture, and it ensured that the company remains on equal ground with its manufacturing customers, today.

Venetian screens

Venetian screens

The transistor was invented in the late 1950s. Domestic light electrical appliance manufacturers used it in radios and used Nunobiki Manufacturing’s Venetian perforated screens for portable radio speaker nets. Nunobiki Manufacturing actually produced the majority of speaker nets for light electrical appliance manufacturers at the time.

In the late 1960s, Nunobiki Manufacturing also began production of expanded metal screens for use in the field of radio microphones. Manufacturers insisted on high sound quality that would produce beautifully sounding music and voices, so Nunobiki Manufacturing strove to deliver perforated screens with uniform open areas.

Nunobiki Manufacturing requested many measuring instrument manufacturers to produce a device that would measure a screen’s open area ratio, but to no avail. So despite having no experience or achievements in the field, it conducted its own research and produced a photoelectric open-area-ratio measuring device to ensure product stability.

Hence, Nunobiki Manufacturing expanded its market into the light electrical appliance and electronic equipment industries.

On seeing Nunobiki’s transistor radio speaker nets, a manufacturer from a different sector also wanted to use the speaker nets as decoration on its gas lighters. Nunobiki Manufacturing quickly responded to the request, confirmed the specifications, and produced the required screens.

Products that at the time used perforated screens or special expanded metal