Forming device, machine, packaging laminate web, forming method and process in producing packages

Patent metadata

Field	Value
Publication number	US-9676512-B2
Application number	US-201314077419-A
Country	US
Kind code	B2
Filing date	Nov 12, 2013
Priority date	Mar 31, 2006
Publication date	Jun 13, 2017
Grant date	Jun 13, 2017

Abstract

A forming device and method for use in a packaging machine of the type where packages are produced from a tube. The forming device comprises two opposing sealing elements between which the tube is arranged to be flat-laid and squeezed to heat the thermoplastic and obtain a first transverse seal of the tube. It further comprises two volume control elements. The forming device is characterized in that it is arranged to displace the first transverse seal off-center in relation a longitudinal axis of the first portion of the tube in a displacement direction essentially perpendicular to the first transverse seal to enable later shaping of a corresponding final package with a wall arranged with a predetermined angle of inclination in relation to the displacement direction. The invention also relates to a machine, a process and a packaging laminate.

First claim

The invention claimed is:

1. A package being made from a packaging laminate web, said packaging laminate web comprising a crease pattern corresponding to one package and repeating itself along the web, said package comprising a front wall, a back wall, first and second opposing side walls, a bottom wall and a top wall, the crease pattern comprising a front crease line defining an extension of the front wall in a longitudinal direction of said package pointing towards the top wall and being parallel to the longitudinal axis of a tube formed from the packaging laminate web, a back crease line defining an extension of the back wall in said longitudinal direction, a first side crease line defining an extension of the first side wall in said longitudinal direction and a second side crease line defining an extension of the second side wall in said longitudinal direction, wherein the first and second side crease lines are inclined in relation to a transverse direction of the web.

2. A packaging laminate for forming liquid food packages, comprising a crease pattern corresponding to one package, said package comprising a front wall, a back wall, first and second opposing side walls, a bottom wall and a top wall, the crease pattern comprising a front crease line defining an extension of the front wall in a longitudinal direction of said final package pointing towards the top wall and being parallel to a longitudinal axis of the packaging laminate, a back crease line defining an extension of the back wall in said longitudinal direction, a first side crease line defining an extension of the first side wall in said longitudinal direction and a second side crease line defining an extension of the second side wall in said longitudinal direction, wherein the first and second side crease lines are inclined in relation to a transverse direction of the packaging laminate.

3. A package according to claim 1 , wherein the front and back crease lines are essentially parallel to the transverse direction of the web, the first and second side crease lines being arranged with said predetermined angle of inclination in relation to the front crease line.

4. A package according to claim 1 , wherein the packaging laminate web further comprises two mutually opposing longitudinal edge sections arranged to be joined together in an overlapping condition for forming of a longitudinal seal and thereby said tube, the back wall of said package comprising a part of the longitudinal seal and said extension of the back wall being larger than said extension of the front wall in said longitudinal direction.

5. A package according to claim 1 , wherein the packaging laminate web further comprises first and second transverse sealing zones intended for first and second transverse seals of the tube, respectively, the web comprising one turn of the crease pattern between the first and second transverse sealing zones, a transverse web portion between the first transverse sealing zone and said crease lines of said one turn of the crease pattern being arranged to form the top wall of said package as well as first and second opposite triangular top flaps of two layers packaging laminate, one of the layers extending from the top wall and the other layer extending from the respective one of the first and second side walls, the top flaps being foldable along the respective side crease lines and thereafter attachable to the respective first and second side walls, the crease pattern further comprising a pair of top flap crease lines associated with each one of the first and second side crease lines, the top flap crease lines of each pair extending in said transverse web portion and defining two free edges of each respective top flap.

6. A package according to claim 1 , further comprising an opening device which dimensions are chosen so that the highest point on the opening device lies in the same plane as the highest edge of the package.

7. A package according to claim 1 , wherein a transversal distance between longitudinal crease lines, forming the longitudinal edges of the package, is equal between all crease lines.

8. A package being made from a packaging laminate as claimed in claim 2 .

9. A package according to claim 8 , further comprising an opening device which dimensions are chosen so that the highest point of the opening device lies in the same plane as the highest edge of the package.

10. A package according to claim 8 , wherein transversal distances between adjacent longitudinal crease lines, forming longitudinal edges of the package, are equal.

Assignees

• Tetra Laval Holdings & Finance

Inventors

• Karlsson Björn
• Damkjaer Niels
• Lagus Tomas

Classifications

• B65B9/2035

  Tube guiding means · CPC title

• B65D5/746

  Spouts formed separately from the container · CPC title

• B29C66/83241

  cooperating pivoting tools · CPC title

• B29L2009/00

  Layered products · CPC title

• B29C66/72321

  consisting of metals or their alloys · CPC title