Changing the future of packaging with unprecedented functions,
materials, and manufacturing technologies

• As the first company in Japan to become involved in the corrugated business, and lead the industry as a pioneer, Rengo has continued to develop numerous innovative functions, materials, and manufacturing technologies which open up the possibilities of packaging. We support ever-evolving packaging with the latest research and development capabilities, including paperboard production technology that achieves lightweight containerboard; functional corrugated packaging such as water resistance, moisture proofing, fire retardancy, and low friction; and development of adhesives that improve production efficiency.

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    Low friction corrugated board
    COSREN
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    Fire-retardant corrugated board
    RAFEP

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  Morphological observation of cellulose nanofibers with an atomic force microscope
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  Observation of the internal structure of corrugated board using an X-ray CT scanner

Developing a variety of functional materials
beyond packaging to make life comfortable

• Rengo developed a series of sustainable package branded as REBIOS, with a sense of mission to contribute to solving environmental issues and marine plastic problems. REBIOS utilizes cellophane and paper and has biodegradability and high biomass content. Other than packages, Rengo has developed zeolite high-density crystallized pulp called Cellgaia, which is also widely used such as in antibacterial kitchen cloths. Moreover, Rengo is conducting research and development for the practical applications of cellulose nanofibers, which are attracting attention from various industries.

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    Plastic Alternative Packaging
    REBIOS
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    Product containing Cellgaia
    Antibacterial kitchen cloth
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    Cellulose fiber
    Cellulose nanofiber

Bringing innovation to packaging through research and development
in collaboration with design and manufacturing frontlines

• To meet high-level needs, it is important to not only develop new functions, but also improve quality from various angles, such as planning, manufacturing, and design. At Rengo, we give birth to many innovative packaging solutions by carrying out research and development while sharing and collaborating on issues with various units.
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    Beverage labels with low environmental impact
    Rengo has developed manufacturing technologies incorporating new technologies and materials such as water-based flexo printing technology, inks made from biomass, and the use of film and so on.
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    Digital pre-printing
    Rengo has achieved highly-decorative customizable printing with content that can be changed per sheet.

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  Checking the color tone of printing ink with a digital microscope
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  Film strength test using a tensile tester

Pursuing safety and peace of mind is also
the responsibility of a leading company

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  Examination of resin composition using a desktop kneader
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  Analysis of trace components in products with a gas chromatograph-mass spectrometer

Major products developed by the Central Laboratory

Recyclable corrugated products

• Damp-proof Moisture-proof corrugated board
• Low friction corrugated board COSUREN
• SAVINDE Corrugated board with anti-rust protection
• RECYCOOL Corrugated board for chill and freshness retention

Cellulose beads

• Viscopearl (Spherical Cellulose Beads)

High-function fiber

• Cellgaia Highly functional fiber combining zeolite with cellulose fiber