become incorporated in and extend the length gen.

[amateur-1]

не понимаю конец предложения -become incorporated in and extend the length, помогите, пожалуйста.(фильтр для табачного дыма. конец я перевела так- и движется с волокном к и через отделку 20 для соединения в длину изготовленного стержня Спасибо.
The extruded element 22 is drawn from reel 24, optionally flavoured, and led directly into engagement with the tow by means of the extruded element guide mandrel 48 at a region just upstream of funnel or ring 15, and travels with the tow to and through the garniture 20, to become incorporated in and extend the length of the rod produced