Capitalizing on the Fourdrinier Process

Known for its rich history of providing high quality paperboard products and developing paperboard solutions for unique packaging applications, the Sprague mill in Versailles, CT maintains one of only four Fourdrinier machines in North America that produces coated recycled board (CRB).

The technology of the Fourdrinier papermaking process, combined with the machine's uniform drying capabilities and Sprague's use of a high-strength homogenous substrate, results in a recycled sheet that is more uniform and possesses the characteristics that maintain its shape and integrity in changing environments.

InverFreez utilizes Sprague's unique capabilities and effectively protects products during the refrigeration and freeze/thaw cycles typically encountered in the frozen food section of the retail environment. This product protection is unusual for normal recycled paperboard grades and usually requires the customer to use a more expensive virgin material in their frozen food packaging applications.

Using the Fourdrinier process, the Sprague mill also developed InverTop, a lightweight 100 percent recycled kraft top sheet that allows for extensive graphics on fluted packaging. This corrugated top sheet is ideal for bulk and club store packaged products such as snack foods, beverage pouches and sporting goods. This lightweight sheet is also excellent when used as a stand-alone paperboard product for overnight mailer envelopes.