Adjustable Retaining Pockets for Gentle Pack Folding and Bonding

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Solution Overview

Problem

Existing folding apparatuses for forming finalized packages from semi-finalized packs of pourable products are in need of improvement to enhance efficiency and handling capabilities.

Innovation Solution

A folding apparatus with a unique path design featuring an oval-like endless path with inclined axes and adjustable retaining pocket plates, along with manipulation assemblies to gently handle and form finalized packages from semi-finalized packs, ensuring optimal insertion, folding, and bonding of flaps and sealing fins.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the endless path has a linear shape between receiving and release stations, then the folding apparatus has a simple structure, but the handling of semi-finalized packs is not optimized and production efficiency is limited

Engineering Contradiction:
Improveproduction efficiencyVSAvoidpath design complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The endless path is designed with an oval-like shape including curved sections instead of purely linear segments. This curvature optimization enables smoother transitions and better packaging material flow during the folding process, thereby improving production efficiency without excessive structural complexity

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The path design incorporates adjustable retaining pocket plates that can modify the path geometry dynamically. This allows the system to adapt to different packaging requirements and optimize the handling of semi-finalized packs, enhancing productivity while maintaining manageable device complexity through programmable control

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If retaining pocket plates are fixed, then the device structure is simple, but the insertion and handling of semi-finalized packs is not optimized

Engineering Contradiction:
Improvehandling capabilityVSAvoidretaining pocket structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The retaining pocket plates are made movable and adjustable rather than fixed, allowing dynamic modification of the path geometry and retaining characteristics. This enables optimized insertion and handling of semi-finalized packs while the adjustment mechanisms maintain acceptable structural complexity

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The adjustable retaining pocket plates serve multiple functions: they retain semi-finalized packs, guide them through the folding process, and can be reconfigured for different pack sizes and types. This multi-functionality improves ease of operation without requiring separate dedicated components for each function

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Volume of moving object

If the folding apparatus uses conventional linear path design, then the compactness is reduced, but the manufacturing and maintenance are simpler

Engineering Contradiction:
Improveapparatus compactnessVSAvoidmanufacturing complexity
Core Design Contradiction:
Volume of moving objectVSEase of manufacture

Solution Approach 1:

The oval-like path design with curved sections allows for more compact arrangement of the folding apparatus compared to linear designs. The curved geometry enables better space utilization while the modular construction methods keep manufacturing complexity manageable

Inventive Principle:
Principle #14Spheroidality (Curvature)

Data Source

PatentEP4656539A1Folding apparatus, packaging machine having a folding apparatus and method for forming finalized packages from semi-finalized packs
Publication Date: 2025.12.03 TETRA LAVAL HOLDINGS & FINANCE SA
  • EP4656539A1 patent drawingFigure 1
  • EP4656539A1 patent drawingFigure 2
  • EP4656539A1 patent drawingFigure 3

AI summary

There is described a folding apparatus (16) comprising a plurality of retaining pockets (30), a conveying device (31) configured to advance the retaining pockets (30) along an endless path (R) and through a receiving station (32) and a release station (33). Each retaining pocket (30) comprises a first plate (40) and a second plate (41) delimiting a retaining space (42) between one another. At least one of the respective first plate (40) and the respective second plate (41) of each retaining pocket (30) is movable so as to modify a distance between the respective first plate (40) and the respective second plate (41) of the respective retaining pocket (30).