Cardboard Packaging with Breakable Zones for Window Insertion

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Solution Overview

Problem

Existing methods fail to efficiently and economically manufacture cardboard packaging with a transparent plastic window, as they do not facilitate a reliable and industrialized assembly process.

Innovation Solution

A process involving cardboard blanks with breakable connecting zones, where the blanks are placed on a conveyor belt with controlled rollers to break the zones, allowing for the insertion of a transparent window and gluing of edges, along with specialized equipment for repositioning and realignment, ensures the creation of packaging with two cardboard bottoms and a transparent window.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If traditional assembly methods are used to combine cardboard and transparent window materials, then the packaging can be manufactured, but the assembly process becomes complex and difficult to industrialize

Engineering Contradiction:

Improveassembly processVSAvoidassembly process

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The cardboard blank is divided into separate sections with pre-defined breakable connecting zones that allow the blank to be split into distinct parts during assembly. This segmentation enables the window to be inserted between separated cardboard sections, simplifying the overall assembly process while maintaining ease of manufacture.

Inventive Principle:

Principle #1Segmentation

2Productivity

If manual assembly methods are used for packaging with transparent windows, then customization is possible, but productivity and production efficiency decrease

Engineering Contradiction:

Improveproduction efficiencyVSAvoidassembly process

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The cardboard blanks are pre-cut with breakable connecting zones and pre-folded along designated lines before assembly. This preliminary preparation allows the window to be quickly inserted between pre-separated cardboard sections, dramatically increasing productivity while maintaining ease of operation through the simplified assembly process.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If rigid assembly methods are used for combining different materials, then structural strength is maintained, but flexibility and adaptability in assembly are reduced

Engineering Contradiction:

Improveassembly processVSAvoidstructural strength

Core Design Contradiction:

Adaptability or versatilityVSStrength

Solution Approach 1:

The breakable connecting zones are designed to allow controlled separation of cardboard sections during assembly, providing dynamic adaptability. Once the window is inserted and edges are glued, the structure gains rigidity and strength, achieving both flexibility during assembly and structural integrity in the final product.

Inventive Principle:

Principle #15Dynamics

4Manufacturing precision

If precise alignment methods are used during assembly, then manufacturing precision is improved, but the complexity and time required for assembly increases

Engineering Contradiction:

Improvealignment precisionVSAvoidassembly time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP3468882B1Method and equipment for manufacturing a package, and package thus formed

Publication Date: 2020.05.20 ETUD SERVICES AUTOMATISMES TECHN ESATEC

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AI summary

The present invention relates to a method for manufacturing a package composed of two cardboard bases and a window extending on the lateral faces between said cardboard bases; cardboard cutouts (2) are prepared by cutting out, from a sheet, two parts (100, 200) which correspond respectively to the shape of the first and the second cardboard base joined together by separable connecting zones (160); the cutouts (2) are placed on a conveyor belt; pressing rollers are applied to the cutouts (2); one of the rollers in contact with one of the parts (200) is slowed down with respect to the roller in contact with the other part (100) in order to cause tearing of said separable zones (160); the two parts (100, 200) are repositioned by moving them apart by a distance corresponding to the height of the window (300); the window (300) is deposited in order to bond the edges on the corresponding edges of the parts (100, 200) which are thus repositioned. It also relates to equipment for carrying out the method and to a box produced according to this method.