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Glenroy, Inc.

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Glenroy, Inc. is a family-owned American flexible packaging converter founded in 1965, specializing in custom rollstock, stand-up pouches, and sustainable film laminations for leading brands.

Last updated September 26, 2026

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Overview

Glenroy, Inc. is a family-owned flexible packaging converter headquartered in Menomonee Falls, Wisconsin. Founded in the summer of 1965 by Herb, Ruth, and Roy Jablonka, the company was named after the founders' two sons, Glen and Roy. It began with a mission to provide the highest quality flexible packaging in the industry and has since grown into a trusted supplier for brands across food, pharmaceutical, industrial, and consumer markets. Glenroy specializes in custom-engineered flexible packaging, including rollstock for stick packs, sachets, lidding film, and packets, as well as high-barrier stand-up pouches and premade STANDCAP pouches. The company also offers surface-printable rollstock for narrow web printers. Its packaging is designed to meet specific product formulations, distribution methods, and filling equipment requirements. A key focus for Glenroy is sustainability. Its TruRenu® portfolio features recyclable pouches and film laminations that qualify for the How2Recycle® store drop-off label program, post-consumer recycled (PCR) pouches and laminations made with up to 53% recycled content, and a PCR version of the STANDCAP pouch with up to 48% recycled content. The company has earned recognition for its sustainability performance, including a Silver Medal from EcoVadis in 2024 and a Bronze Medal in 2026. Glenroy remains unique in an industry characterized by mergers and massive corporations by staying family-owned and now operating under the third generation of family ownership. The company continues to grow with customers around the globe, emphasizing accessible technical expertise, unsurpassed service, and reliability. Its success stories span diverse applications, from pharmaceuticals and engine oil to a nutritional gel designed to save starving children in Haiti.

History

Glenroy, Inc. was founded in the summer of 1965 by Herb, Ruth, and Roy Jablonka. The company was named after Herb and Ruth's two sons, Glen and Roy. From its first facility, Glenroy set out with a mission to provide the highest quality flexible packaging in the industry. Over time, the company developed a reputation for consistently dependable, high-quality flexible packaging material. Positive word-of-mouth led to a loyal following of customers and steady growth. In the decades that followed, Glenroy expanded its capabilities and product range. It became known for custom-engineered flexible packaging solutions, including rollstock for stick packs, sachets, lidding film, and packets, as well as stand-up pouches. The company also developed expertise in high-barrier structures and surface-printable rollstock for narrow web printers. A significant development in Glenroy's history was its focus on sustainability. The company launched the TruRenu® sustainable flexible packaging portfolio, featuring recyclable pouches and film laminations that qualify for the How2Recycle® store drop-off label program, post-consumer recycled (PCR) pouches and laminations made with up to 53% recycled content, and a PCR version of the STANDCAP pouch with up to 48% recycled content. This innovation aligned with growing market demand for environmentally responsible packaging. Glenroy has remained family-owned throughout its history, now under the third generation of family ownership. This sets it apart in an industry characterized by mergers and massive corporations. The company continues to grow with customers around the globe, emphasizing accessible technical expertise, unsurpassed service, reliability, and trusted flexible packaging products. Its success stories include collaborations with brands such as Walex Products Company, Nature Nate's Honey Co., SoChatti Chocolate, EcoVue Ultrasound Gel, ZORBX, Arctic Cat, NEUTECH Packaging Systems, Multi-Pack Solutions, and Nomax Inc., as well as the HopeGel Project, a nutritional gel designed to save starving children in Haiti. In recent years, Glenroy has received recognition for its sustainability and safety performance. In 2024, it earned a Silver Medal from EcoVadis, placing it among the top 15% of all companies scored. In 2026, it received a Bronze Medal from EcoVadis. Also in 2026, Glenroy launched its innovative Tear-Anywhere™ packaging film for superior stick pack performance. The company was also recognized with a Wisconsin Corporate Safety Award in 2024.

  • 2026

    Earned Bronze Medal from EcoVadis for sustainability performance.

  • 2026

    Launched Tear-Anywhere™ packaging film for superior stick pack performance.

  • 2024

    Earned Silver Medal from EcoVadis for sustainability performance.

  • 2024

    Recognized as one of nine winners of the Wisconsin Corporate Safety Award.

  • 1965

    Glenroy, Inc. founded by Herb, Ruth, and Roy Jablonka in the summer.

Products and positioning

A family-owned, third-generation flexible packaging converter offering custom-engineered, sustainable packaging solutions with a focus on quality, service, and technical expertise.

  • TruRenu® Sustainable Flexible Packaging

    Portfolio featuring recyclable pouches and film laminations qualifying for How2Recycle® store drop-off, PCR pouches and laminations with up to 53% recycled content, and PCR STANDCAP pouch with up to 48% recycled content.

  • STANDCAP Pouches

    Premade inverted stand-up pouches designed to expand packaging portfolios and drive consumer engagement.

  • Tear-Anywhere™ Packaging Film

    Next-generation flexible film for stick packs, designed for unmatched convenience.

  • Flexible Packaging Rollstock

    Custom-engineered rollstock for stick packs, sachets, lidding film, packets, and narrow web printing.

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