Blue Ocean Closures launches fiber-based plug for reclosable packaging

Blue Ocean Closures has launched the Paper-Plug, a fiber-based closure for food and home care applications. 

The solution is designed to integrate into paper packaging. Conventional fiber-based closures often rely on tear openings. The Paper-Plug aims to combine an internal screw closure with a direct interface to carton and corrugated structures. 

Staffan Andersson, chief technology officer at Blue Ocean Closures, says: “Paper packaging has historically been strong in surfaces and structure but limited in functionality wherever advanced opening, dispensing, and reclosure features were needed.”

“With Paper-Plug, we want to expand what paper packaging can become. This opens a completely new design space where sustainability, convenience, and economics increasingly reinforce each other rather than compete.”

Potential applications for the Paper-Plug include dry and frozen food, supplements, home care, refill systems, and e-commerce packaging.

Blue Ocean Closures says it will open the concept for standardized solutions and proprietary collaborations, enabling converters, brands, and technology partners to develop differentiated packaging systems.

Carina Leandersson, product manager at Blue Ocean Closures, says: “What excites us the most is not one packaging solution, but the many layers of innovation this concept enables. We already see opportunities across several categories and consumer needs that traditionally have been difficult to solve with paper alone.”

Fiber-applications

Blue Ocean Closures says that the Paper-Plug addresses “several important packaging trends,” such as improved consumer convenience, reduced fossil dependency, and barrier protection.

In addition, the company highlights that the solution supports consumer convenience and industry demand for alternatives to glass, metal, or plastic.

The caps and closure company has partnered with companies representing many industry sectors, including pharmaceutical, alcoholic beverages, and dairy products.

Last year, Elopak announced its investment in Blue Ocean Closures, becoming a co-owner of the Swedish sustainability start-up specializing in fiber-based closures. The partnership supports Elopak’s effort in cutting the carbon footprint of its cartons by reducing plastic use and increasing paper content.

Recently, Blue Ocean Closures lowered the price of its fiber-based screw caps, aiming to help brands avoid passing on rising plastic costs to consumers. The move diverged from broader market pricing trends, which are increasing due to supply chain disruptions of fossil-based resins.