Corrugated Cardboard Web Cutting for Flexible Blank Production

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Solution Overview

Problem

The existing methods for producing corrugated cardboard blanks are inefficient, particularly when producing small quantities, as they require high transportation speeds and result in significant logistical challenges and waste due to limited shape flexibility and expensive stamping tools.

Innovation Solution

A continuous method that cuts corrugated cardboard webs using variable cutting tools, such as lasers, directly from the material web without stacking, allowing for flexible shape variations and elimination of intermediate processing steps, enabling production from a single item to mass production.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional stamping tools are used to cut blanks from corrugated cardboard panels, then production of small quantities is possible, but the tools are expensive and shape flexibility is limited

Engineering Contradiction:

Improveshape flexibilityVSAvoidstamping tool cost

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent replaces conventional mechanical stamping tools with laser cutting technology. The laser beam acts as a non-contact cutting tool that can be precisely controlled by computer software to cut any shape from the corrugated cardboard web, eliminating the need for expensive physical stamping dies while providing unlimited shape flexibility

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a dynamically controllable laser cutting system that can adapt its cutting path, speed, and parameters in real-time based on the desired blank shape. The laser position is controlled by a planning unit that calculates optimal cutting paths, allowing the system to switch between different shapes and sizes without physical tool changes

Inventive Principle:

Principle #15Dynamics

2Productivity

If corrugated cardboard panels are produced and stacked for further processing, then continuous production is achieved, but significant storage space is required and dimensional changes occur during storage

Engineering Contradiction:

Improvecontinuous productionVSAvoiddimensional instability

Core Design Contradiction:

ProductivityVSLoss of substance

Solution Approach 1:

The patent performs the cutting operation immediately after the corrugated cardboard is produced on the web, before it is stacked for storage. By cutting the blanks directly from the moving web using the laser, the blanks are created in their final shape and size while the material is still dimensionally unstable, preventing subsequent dimensional changes that would occur during storage

Inventive Principle:

Principle #10Preliminary action

3Productivity

If high transportation speeds are used to move stacked panels, then production efficiency increases, but logistical challenges and waste increase

Engineering Contradiction:

Improvetransportation speedVSAvoidwaste

Core Design Contradiction:

ProductivityVSLoss of substance

Solution Approach 1:

The patent maintains continuous production by cutting blanks directly from the moving corrugated cardboard web without interrupting the production line. The laser cutting system operates continuously as the web moves through the corrugator, eliminating the need to stop for stacking and storage operations, thereby maintaining high productivity without generating waste from intermediate handling

Inventive Principle:

Principle #20Continuity of useful action

4Ease of operation

If intermediate storage of corrugated cardboard panels is implemented, then processing flexibility is achieved, but storage space and time are required

Engineering Contradiction:

Improveprocessing flexibilityVSAvoidstorage time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This method increases production speed, reduces waste, and allows for flexible and cost-effective production of corrugated cardboard blanks in various shapes and sizes, eliminating the need for intermediate storage and expensive stamping tools.

Implementation Method 1

guiding the material web into the area of action of at least one first cutting tool or a first group of cutting tools; cutting the material web with at least one variable cutting tool, unrelated to shape, wherein with the cutting tool first cutting lines are introduced into the material web

Methodology Applied

Scientific EffectLaser: Laser

Implementation Method 2

A continuous method that cuts corrugated cardboard webs using variable cutting tools, such as lasers, directly from the material web

Methodology Applied

Scientific EffectLaser ablation: Laser Ablation

Data Source

PatentUS11517979B2Method for producing corrugated cardboard blanks, and device

Publication Date: 2022.12.06 PANTHER PACKAGING

AI summary

The invention relates to a method for producing blanks from paper, cardboard, paperboard, corrugated cardboard, or plastic. The method according to the invention does not process panels or sheets into blanks in a multistage process but rather produces the blanks directly from the material web i.e. the corrugated cardboard web or from the paper, paperboard, plastic or cardboard web. The machining process is scalable. Advantageously, the method according to the invention can be adjusted in terms of the required production or packaging quantity by the juxtaposition of additional processing centers in terms of production speed and quantity.