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June 05, 2018 02:00 AM

Laser etching makes its mark for Seco

Kyle Brown
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    Kyle Brown, Rubber & Plastics News
    Seco Machine's laser engraver can etch a date code, detailed logo or serial number into a part.

    NORTH CANTON, Ohio—A new organic laser engraver unit has been saving time normally lost to processes like date-coding parts for Seco Machine, a division of A. Stucki Co. in North Canton, according to a product manager.

    A. Stucki, a developer of rail car industry products since its beginning as a family business in 1911, acquired Seco in 2010. Also located in North Canton, Seco is a machined product and mold manufacturer that previously had supplied A. Stucki, said Jon Kaufman, product manager, urethanes and polymers, for A. Stucki.

    Originally, when Seco began producing elastomer products for the rail industry, workers used rotary-dial tools to date-code parts. At first, it wasn't too time-consuming, but as more jobs began to stack up with more molds, it meant taking more time for the date-codes, Kaufman said.

    "Each cavity would have to have its date code changed at the beginning of every week," he said. "Now we have about 300 molds, times four to six cavities. We were wasting almost a whole day on Mondays switching date codes and not pouring urethane."

    After seeing a demonstration at a trade show, Seco added a carbon dioxide-based organic laser engraver to its equipment for about $30,000 in the summer of 2013, Kaufman said. With the engraver, instead of switching through rotary dials, the company can track the lot of parts by date of manufacturing, then mark them with a date-code in quick succession.

    "It's just four digits. We can mark it in about a second, maybe a second and a half," Kaufman said. "So really, you're just tying up the labor of one person in a shift compared to an entire production staff for that day."

    In terms of time saved, the engraver saved about 20 percent of production time for staff, Kaufman said. It allows for quick reproduction of the same text for a set of parts, but can also do logos or other images, which require more skill to manage contrast and resolution of the finished image.

    "You'll have different intensities that are needed for, say, leather, wood or urethane, or even the different durometers and families of urethane," Kaufman said.

    Though those types of materials are more common, the engraver can handle more unconventional organic materials as well. Kaufman has worked on cell phone cases, a set of antlers and, in one case, a tomato, he said.

    "It actually burned away the top skin, and you could see the second layer of it, and it was detailed," he said. "It was awesome."

    Another point where the engraver can save time and labor is by bypassing surface preparation, Kaufman said. For parts that require mold release, the laser can make its mark without cleaning the surface.

    "The laser doesn't care about the surface preparation," Kaufman said. "That's one thing that makes it a lot easier on the handling and labor for us."

    Since the laser runs off of compressed tanks of CO2, the lifespan before maintenance will be about 30,000 hours, Kaufman said.

    Kyle Brown, Rubber & Plastics News

    Jon Kaufman, product manager, urethanes and polymers, for A. Stucki.

    "Really it's just the electricity, plugging it in," he said. "You're not buying ink, you're not buying cartridges. You're not buying plates or stamping tabs to drill into it. In that sense, we looked at it as a non-consumable type of application."

    The engraver provides versatility in where a part can be marked, as opposed to open atmospheric casting of elastomers, he said. Rather than being mostly restricted to using only the bottom of the mold for marking, laser engraving can be used almost anywhere on the part. It can serialize or bar code parts, and has the level of detail to allow for QR codes.

    "If you somehow had to etch or mold a serial number onto the part, you would not want to do that with every mold," he said. "And it's one thing when it's an injection mold, but for us, every cavity is a part. And you're running through as many cavities as you can in our process."

    Kaufman said the engraver can mark and serialize the counting of the parts, automatically moving sequentially through the codes as each part is changed out.

    The addition of the engraver is part of Stucki's strategy to diversify its offerings, expanding its reach beyond rail, he said. The company now has some products involved in the construction, concrete, oil and gas, and wastewater treatment industries. With the new engraving capabilities, the company is aiming for custom, low-volume jobs that are more customized. The company also has created an industrial sales force to reach a wider variety of jobs.

    "That's one place where it takes a little time to get your foot in the door and build those relationships, but we definitely think we're in a position to take advantage of our capabilities once those relationships are built," he said.

    A. Stucki is bringing on employees as part of the industrial sales team, and assigning overlapping duties to some current sales staff, Kaufman said, though he did not disclose a specific number. The company did not have to hire new employees for the laser engraver.

    The company's coverage reaches mainly across the U.S., according to an A. Stucki spokeswoman.

    "As our industrial sales side starts coming on strong, there's a good foothold to the segments of the industry that they're treading in now, and that will only bring on more activity," she said. "We're anticipating the expansion of laser etching services at some point, but we're already dabbling in some really unique pieces. So we're excited to get on board with more activity and see what the sales guys can do."

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