Adhesive Absorbent Pad Structure for Direct Pants Attachment

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Solution Overview

Problem

Existing feminine hygiene products, such as panty liners, require separate clothing beneath pants, which is inconvenient and undesirable.

Innovation Solution

A detachable absorbent pad with an adhesive layer that attaches directly to the interior surface of pants, featuring an impermeable polymeric sheet and a secondary absorbent piece, designed to fit the crotch area and absorb discharge.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional panty liners are used, then absorbency function is provided, but additional clothing is required which increases device complexity and reduces ease of operation

Engineering Contradiction:

Improveease of useVSAvoidclothing layers

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent combines the absorbent liner function with the pants integration function into a single unified product. The absorbent pad is directly attached to the interior surface of pants through adhesive layers, merging two separate functions (absorbency and clothing integration) into one product, thereby eliminating the need for additional separate clothing layers

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The pants-integrated absorbent pad serves multiple functions simultaneously: it provides absorbency for menstrual discharge, acts as an undergarment layer, and integrates with the outer pants through adhesive attachment. This multi-functionality eliminates the need for separate panty liners and additional clothing layers

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If adhesive layer is added to attach to pants, then attachment security is improved, but device complexity increases

Engineering Contradiction:

Improveattachment securityVSAvoidstructure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent uses adhesive layers as intermediary substances to create a reliable bond between the absorbent pad and the pants interior surface. The adhesive acts as a mediator that transfers the attachment function from the pad to the pants, ensuring secure attachment without requiring complex mechanical fastening mechanisms

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces mechanical attachment systems (such as hooks, clips, or elastic bands) with a chemical bonding system using adhesive layers. This substitution provides reliable attachment security through chemical adhesion rather than mechanical complexity, simplifying the overall device structure

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

Provides a convenient and secure attachment solution for feminine hygiene products, eliminating the need for additional clothing and enhancing comfort and discretion.

Implementation Method 1

an adhesive layering disposed between the thin polymeric film and the reverse surface, the adhesive layering operable to detachably affix to the pad to an interior surface of woman's pants

Methodology Applied

Scientific EffectAdhesion: Adhesive

Implementation Method 2

a secondary absorbent piece affixed superiorly to an obverse surface of the polymeric sheet, the secondary absorbent piece covering 60 to 80% of the predetermined surface area of the polymeric sheet

Methodology Applied

Scientific EffectAbsorption: Absorption (physical)

Data Source

PatentUS20260026979A1Absorbent pad with adhesive function

Publication Date: 2026.01.29 NELSON JENNIFER MARIE

AI summary

An absorbent pad with adhesive function operable to detachably affix to an interior surface of women's pants, the absorbent pad comprising a flexible polymeric fabric and absorbent material defining a plurality of slits.