A total of five new headboxes and four retrofits have already been sold and manufactured with this new process. Several of these started up recently and are operating very successfully.

Lee and Man, the second biggest paper company in China, installed and started up a BTF dilution control headbox retrofit on the base ply of their PM3 linerboard machine in September last year. Performance optimization trials were run in October and the installation met all performance guarantees. In addition to the expected improvements in the sheet CD profile, the mill also realized significant savings in chemical costs. Lee and Man have ordered two more BTF retrofit systems, one for their PM5, which will start up later this year, and one for their PM7, which recently started up successfully in February.

Zao Zhuang Huarun started up four new BTF headboxes on their PM4 four-ply gypsum board machine in September 2012. Performance optimization trials were run in November and following successful testing, the customer released all performance guarantees. This customer already has two older BTF headboxes on their PM3 machine, now making a total of six BTF headboxes in this mill.