METHOD AND DEVICE FOR MANUFACTURE OF (CIGARETTE) PACKS Russian patent published in 2014 - IPC B65B11/22 B65B49/02 B65B49/04 

FIELD: tobacco industry.

SUBSTANCE: in the method for folding a foldable ridge of an overwrap makeup during manufacture of (cigarette) packs of cigarette block packages, during folding of the first foldable ridge and at least upon reaching the ridge terminal position, heat is supplied so that the ridge folding becomes stabilised. Then one folds the other ridges and connects the ridges to each other. When a pack or a group of packs is wrapped in the wrap that encloses it in a tubular way and in the wrap lateral ridges folded on the lateral surface of the pack contents, heat is supplied first to the folded inner ridge, preferably - with triangular foldable ridges adjoining. Heat supplied is below the welding temperature or within the lower part of the makeup packaging material welding temperatures which results in the ridges stabilisation without thermal welding. Heat stabilising the ridge is transmitted via a stationary folding element, in particular, a stationary folder, while a unit consisting of a pack or a group of packs with the wrap makeup is moved along the folding element so that during the ridge folding heat is transmitted to the wrap moving along the folding element. The device for the method implementation contains a folding element (intended for folding the first foldable ridge and designed so that to enable its heating so that to stabilise the ridge folding position) and contains other folding elements for folding other ridges as well as devices for ridges welding or gluing bonding. During folding, the folding element is heated to a temperature below that of the wrap makeup welding (so that to prevent thermal welding) and designed in the form of a stationary folder. A unit consisting of a pack or a group of packs with the wrap makeup is moved along the folding element so that during the ridge folding heat is transmitted to the wrap moving along the folding element.

EFFECT: higher quality.

11 cl, 6 dwg