Custom Graphics Printing on Absorbent Articles via Flattening

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing methods for printing graphics on absorbent articles, such as diapers, are limited in terms of flexibility, quality, and speed, and often require expensive equipment, making it difficult to produce small quantities with customized or personalized designs efficiently.

Innovation Solution

A printing system that includes a carrier apparatus with hook members connected to an endless belt and a pressing apparatus with rollers, which conveys and flattens absorbent articles to provide a smooth surface for inkjet printing, allowing for customized graphics to be printed on individual absorbent articles as they advance through the system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional printing methods are used on absorbent articles, then graphics can be printed on continuous webs, but the number of different printed graphics is limited and print quality is relatively low

Engineering Contradiction:

Improvenumber of different printed graphicsVSAvoidprint quality

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent replaces traditional mechanical printing systems with inkjet printing technology. The inkjet printing system uses digital control to喷射 ink droplets onto the absorbent article, allowing for high-quality graphics with unlimited design variations. This substitution of mechanical printing with digital inkjet technology simultaneously improves both print quality and the versatility of graphic designs.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Manufacturing precision

If traditional printing apparatus are used, then graphics can be printed on absorbent articles, but the equipment cost is relatively expensive

Engineering Contradiction:

Improveprint qualityVSAvoidequipment cost

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent employs a disposable absorbent article carrier system where individual articles are printed and then discarded after printing. This eliminates the need for expensive, complex printing equipment that must be maintained and cleaned. The inkjet printing system is paired with a disposable carrier that moves articles through the printing zone, reducing overall system cost while maintaining high print quality.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Productivity

If traditional printing methods are used, then graphics can be printed on absorbent articles, but the manufacturing speed is relatively low

Engineering Contradiction:

Improvemanufacturing speedVSAvoidprint quality

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent implements a continuous printing process where absorbent articles are conveyed through the inkjet printing system without interruption. The endless carrier continuously moves articles through the printing zone, allowing for high-speed continuous printing while maintaining quality. Multiple inkjet nozzles can print simultaneously on different articles, further increasing productivity without compromising print quality.

Inventive Principle:

Principle #20Continuity of useful action

4Ease of manufacture

If absorbent articles are printed without flattening, then the process is simpler, but the printed surface has wrinkles and is not smooth

Engineering Contradiction:

Improveprinting process simplicityVSAvoidsurface smoothness

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent applies a flattening action to the absorbent article before it enters the printing zone. A pressing roller or flattening device smooths the surface of the article in advance, ensuring that when the inkjet nozzles deposit ink, the surface is wrinkle-free and smooth. This preliminary flattening action maintains process simplicity while achieving high surface quality for printing.

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

Enables efficient production of small quantities of absorbent articles with customized graphics, maintaining high print quality and flexibility, while reducing equipment costs and improving manufacturing speed.

Implementation Method 1

the pressing apparatus compresses and flattens the absorbent article against the hook member to help provide a relatively flat, smooth and wrinkle-free surface on the absorbent article to be printed

Methodology Applied

Scientific EffectCompression: Compression

Data Source

PatentUS9096078B2Process and apparatus for printing assembled absorbent articles with custom graphics

Publication Date: 2015.08.04 PROCTER & GAMBLE CO

AI summary

The present disclosure relates to methods and apparatuses for printing graphics on absorbent articles. Printing systems according to the present disclosure may include a carrier apparatus that transports individual absorbent articles past a printing station, which prints a custom graphic on the absorbent articles. The carrier apparatus may include a hook member connected with an endless belt. The printing system may also include a pressing apparatus positioned adjacent the endless belt. During operation, an absorbent article may be positioned on a hook member, and the endless belt conveys the absorbent article in the machine direction past the printing station. As the absorbent article advances toward the printing station, the pressing apparatus compresses and flattens the absorbent article against the hook member to help provide a relatively flat, smooth surface on the absorbent article to be printed. The printing station then prints a graphic on the advancing article.