Artificial Nail Blocking Structure for Adhesive Overflow Control

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Solution Overview

Problem

Existing artificial nails suffer from adhesive overflow during application, which affects the aesthetic appearance by spreading onto the upper surface.

Innovation Solution

The artificial nail features a blocking surface and transition surface design that obstructs adhesive overflow, with specific angles and curvatures to prevent adhesive from escaping to the upper surface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If adhesive is applied in adequate amount to ensure strong bond, then bonding strength is improved, but adhesive overflow onto peripheral edge surface and upper surface occurs

Engineering Contradiction:

Improvebonding strengthVSAvoidadhesive overflow

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The lower surface is segmented into adhesive-coating area and non-adhesive-coating area (blocking surface area), with the blocking surface acting as a separate functional zone that prevents adhesive overflow while allowing adequate adhesive application in the coating area for strong bonding

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The blocking surface acts as an intermediary structure between the adhesive-coating area and the peripheral edge surface, intercepting and containing excess adhesive before it can overflow onto the peripheral edge surface and upper surface

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If adhesive is applied generously to ensure coverage, then bonding reliability is improved, but adhesive flows out from edges during coating process

Engineering Contradiction:

Improvebonding reliabilityVSAvoidadhesive loss

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The lower surface is divided into functional zones: adhesive-coating area for reliable bonding and blocking surface area that contains excess adhesive, preventing it from flowing outward and being lost

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The excess adhesive that would normally be considered waste or harmful overflow is redirected by the blocking surface to accumulate in the non-adhesive-coating area, where it serves no harmful function and can be easily cleaned without affecting the bonding area

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Strength

If adequate adhesive is applied to cover rear half of lower surface, then bond strength is improved, but adhesive overflows onto upper surface affecting aesthetics

Engineering Contradiction:

Improvebond strengthVSAvoidaesthetic appearance

Core Design Contradiction:

StrengthVSShape

Solution Approach 1:

The lower surface is segmented into adhesive-coating area (covering rear half for strong bond) and blocking surface area that prevents adhesive from reaching the upper surface, thus maintaining aesthetic appearance while ensuring bonding strength

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The blocking surface serves as an intermediary barrier between the adhesive-coating area and the upper surface, intercepting excess adhesive and preventing it from overflowing onto the upper surface where it would affect aesthetics

Inventive Principle:

Principle #24Intermediary (Mediator)

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

The design effectively prevents adhesive overflow, maintaining the aesthetic integrity of the nail by containing excess adhesive, ensuring it does not reach the upper surface.

Implementation Method 1

a blocking surface which is bent from an edge of the lower surface in a direction away from the upper surface and is located between the lower surface and the upper surface

Methodology Applied

Scientific EffectPhysical containment: Physical Containment

Implementation Method 2

UV light is irradiated onto the upper surface of the artificial artificial nail body and penetrate the artificial artificial nail body to cure the UV adhesive applied on the lower surface

Methodology Applied

Scientific EffectPhotopolymerization: Photopolymerisation

Data Source

PatentUS12514354B1Artificial nail with anti-overflow structure

Publication Date: 2026.01.06 GUANGZHOU BODHI INFORMATION TECHNOLOGY CO LTD

AI summary

An artificial nail includes an artificial nail body which is convex upwardly. The artificial nail body has an upper surface and a lower surface opposite to the upper surface. The artificial nail body further comprises a blocking surface which extends downwardly from a rear edge of the lower surface and is located between the lower surface and the upper surface. During the adhesive application and pressing process, any adhesive that tends to overflow outward is initially blocked by the blocking surface. For the adhesive to leak, it must overcome the barrier of the blocking surface. Thus, the adhesive is unlikely to overflow from the lower surface, thus preventing any impact on the nail's aesthetic appearance.