Smurfit Westrock Plc, together with its subsidiaries, manufactures, distributes, and sells containerboard, corrugated containers, and other paper-based packaging products in Ireland and internationally. The company produces containerboard that it converts into corrugated containers or sells to third parties, as well as produces other types of paper, such as consumer packaging board, sack paper, graphic paper, solid board and graphic board, and other paper-based packaging products, such as consumer packaging, solid board packaging, paper sacks, and other packaging products, including bag-in-box. It also produces linerboard and corrugated medium, paperboard, and non-packaging grades of paper, as well as converted products, such as folding cartons and corrugated boxes, and other products; recycled paper-based packaging products; and packaging machinery. The company primarily serves food and beverage, e-commerce, retail, consumer goods, industrial, and foodservice markets. Smurfit Westrock Plc was founded in 1934 and is headquartered in Dublin, Ireland.

Packaging Corporation of America manufactures and sells containerboard and corrugated packaging products in the United States. The company operates through three segments: Packaging, Paper, and Corporate and Other. The Packaging segment offers various containerboard and corrugated packaging products, such as conventional shipping containers used to protect and transport manufactured goods; multi-color boxes and displays that help to merchandise the packaged product in retail locations; and honeycomb protective packaging products, as well as packaging for meat, fresh fruit and vegetables, processed food, beverages, and other industrial and consumer products. This segment sells its corrugated products through a direct sales and marketing organization, independent brokers, and distribution partners. The Paper segment manufactures and sells commodity and specialty papers, as well as communication papers, including cut-size office papers, and printing and converting papers. This segment sells white papers through its sales and marketing organization. The Corporate and Other segment includes corporate support staff services and related assets and liabilities; and transportation assets, such as rail cars and trucks for transportation. Packaging Corporation of America was founded in 1867 and is headquartered in Lake Forest, Illinois.

International Paper Company produces and sells renewable fiber-based packaging and pulp products in North America, Latin America, Europe, and North Africa. It operates through two segments, Industrial Packaging and Global Cellulose Fibers. The company offers linerboard, medium, whitetop, recycled linerboard, recycled medium and saturating kraft; and pulp for a range of applications, such as diapers, towel and tissue products, feminine care, incontinence, and other personal care products, as well as specialty pulps for use in textiles, construction materials, paints, coatings, and others. It sells its products directly to end users and converters, as well as through agents, resellers, and distributors. The company was founded in 1898 and is headquartered in Memphis, Tennessee.

Crown Holdings, Inc., together with its subsidiaries, engages in the packaging business in the United States and internationally. It operates through Americas Beverage, European Beverage, Asia Pacific, and Transit Packaging segments. The company manufactures and sells recyclable aluminum beverage cans and ends, glass bottles, steel crowns, aluminum caps, non-beverage cans, and aerosol cans and closures. It also provides manual, semi-automatic, and automatic equipment and tools to apply and remove consumables, such as straps and films; protective solutions, including airbags, edge protectors, and honeycomb products; and steel and plastic consumables include steel strap, plastic strap, industrial film, and other related products. The company serves food industries, including pet food, personal care, household, and industrial products. Crown Holdings, Inc. was founded in 1892 and is headquartered in Yardley, Pennsylvania.

Graphic Packaging Holding Company, together with its subsidiaries, designs, produces, and sells consumer packaging products to brands in food, beverage, foodservice, household, and other consumer products. It operates through three segments: Paperboard Manufacturing, Americas Paperboard Packaging, and Europe Paperboard Packaging. The company offers unbleached, bleached, and recycled paperboard to various paperboard packaging converters and brokers. It also provides paperboard packaging products for consumer packaged goods companies; and cups, lids, and food containers for foodservice companies and quick-service restaurants serving the food, beverage, and consumer product markets, including healthcare and beauty. The company also designs, manufactures, and installs specialized packaging machines. The company sells its products through sales offices, as well as through broker arrangements with third parties in the Americas, Europe, and the Asia Pacific. Graphic Packaging Holding Company was incorporated in 2007 and is headquartered in Atlanta, Georgia.

Sonoco Products Company, together with its subsidiaries, designs, develops, manufactures, and sells various engineered and sustainable packaging products in North and South America, Europe, Australia, and Asia. The company operates Consumer Packaging and Industrial Paper Packaging segments. The Consumer Packaging segment offers round and shaped rigid paper, steel, and plastic containers; metal and peelable membrane ends, closures, and components; thermoformed plastic trays and enclosures; and high-barrier flexible packaging products. The Industrial Paper Packaging segment provides paperboard tubes, cones, and cores; paper-based protective packaging products; and uncoated recycled paperboard products. It also offers various packaging materials, including plastic, paper, foam, and other specialty materials. Sonoco Products Company sells its products in various markets, which include paper, textile, film, food, packaging, construction, and wire and cable. The company was founded in 1899 and is headquartered in Hartsville, South Carolina.

Pactiv Evergreen Inc. manufactures and distributes fresh foodservice and food merchandising products, and fresh beverage cartons in the United States, rest of North America, and internationally. It operates in two segments, Foodservice, and Food and Beverage Merchandising. The Foodservice segment offers food containers; drinkware, such as hot and cold cups and lids; and tableware, service ware, and other products. The Food and Beverage Merchandising segment manufactures cartons for fresh refrigerated beverage products, including dairy, juice, and other specialty beverage; clear rigid-display containers, containers for prepared and ready-to-eat food, and trays for meat and poultry and egg cartons; fiber-based liquid packaging board; and supplies fresh carton systems comprises printed cartons, spouts, and filling machinery. It serves its products to full-service restaurants, quick service restaurants, foodservice distributors, supermarkets, grocery and healthy eating retailers, other food stores, food and beverage producers, and food packers and food processors. The company was formerly known as Reynolds Group Holdings Limited. The company was founded in 1880 and is headquartered in Lake Forest, Illinois. Pactiv Evergreen Inc. is a subsidiary of Packaging Finance Limited.

WestRock Company, together with its subsidiaries, provides fiber-based paper and packaging solutions in North America, South America, Europe, Asia, and Australia. It operates through four segments: Corrugated Packaging, Consumer Packaging, Global Paper, and Distribution. The Corrugated Packaging segment produces containerboards, corrugated sheets, corrugated packaging, and preprinted linerboards to consumer and industrial products manufacturers, and corrugated box manufacturers. It also provides structural and graphic design, engineering services and custom, and proprietary and standard automated packaging machines; turn-key installation, automation, line integration, and packaging solutions; machinery solution that creates pouches; and pack temporary displays, as well as lithographic laminated packaging products. The Consumer Packaging segment manufactures and sells folding cartons that are used to package food, paper, beverages, dairy products, confectionery, health and beauty, and other household consumer products, as well as express mail packages for the overnight courier industry. It also offers inserts and labels, as well as rigid packaging and other printed packaging products, such as transaction cards, brochures, product literature, marketing materials, and grower tags, and plant stakes; and paperboard packaging for over-the-counter and prescription drugs. In addition, this segment manufactures and sells solid fiber and corrugated partitions, and die-cut paperboard components. The Global Paper segment manufactures containerboard, paperboard, and specialty grades primarily to corrugated packaging, folding carton, food service, liquid packaging, tobacco, and commercial print markets. The Distribution segment distributes corrugated packaging materials and other specialty packaging products, including stretch films, void fills, carton sealing tapes, and other specialty tapes; and provides contract packing services. The company is based in Atlanta, Georgia. As of July 5, 2024, WestRock Company operates as a subsidiary of Smurfit Kappa Group Plc.