W&H retrofits increase production 20% at Tunisian company

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Photo by Windmöller & Hölscher

Tunisian film manufacturer Comptoir National du Plastique (CNP) has increased production of its blown film line by 20% with a retrofit from Windmöller & Hölscher (W&H).

The company modernised its Varex 3-layer blown film line from 2007 with a new Maxicone C three-layer die head, with a 315/500 size, by W&H.

In addition, the company retrofit the existing machine with two W&H automation modules, Profile Booster and Easy Change, the German packaging machinery supplier said 26 Feb.

Profile Booster helps speed gauge control for faster job changes and start-ups, while Easy Change is viewed as an “auto pilot” for blown film lines.

With the ability to adjust all format-relevant machine parameters automatically, including the cooling air, Easy Change makes format changes faster and cuts the potential for mistakes.

CNP has seen the time for job changes reduced to three minutes with the added automation.

“Previously, we needed a multiple of this,” said Ameur Chamakhi, managing director production at CNP.

Waste from the line has also been reduced by 80% to around 20kg.

“With the modernised line we produce shrink film at 610kg per hour and laminating film in 25µ at 500kg per hour, which is an output increase of more than 20% ", explained Chamakhi.

The entire retrofitting took about a week, from initial dismantling of the old die head to the start of production with the new die head and software, W&H said.

"The Varex is CNP's main blown film line. We planned the installation of the new die head in detail and carried it out without delay to keep downtime to a minimum," explained Hendrik Steen, the head of retrofitting at W&H.

Founded in 1958, CNP is the oldest Tunisian plastics processing company.

Today, the company has a production capacity of 10 kilotonnes per annum and supplies films to countries of the region.

The company specialises in the production of agricultural and industrial packaging.

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