Self-Closing Wet Wipe Cap Using Elastic Material for Automatic Sealing

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Solution Overview

Problem

Existing wet wipe caps require manual closure and often fail to fully seal, leading to contamination and evaporation, which reduces the lifespan of the wet wipes and necessitates additional water in production to compensate for moisture loss.

Innovation Solution

A self-closing cap system utilizing a mold with a hanger and an elastic material, combined with a magnet for easy opening and automatic closure, ensuring a secure seal and reducing water usage in production.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If a manual lid is used to close the wet wipe container, then the structure is simple, but the cap cannot close automatically leading to evaporation and contamination

Engineering Contradiction:
Improveautomatic closureVSAvoidcap structure
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The cap is designed to close automatically using the elastic material's restoring force after being pulled open by the hanger, eliminating the need for manual closure operations. The system serves itself by utilizing the mechanical properties of the elastic material to return the cap to its closed position

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The cap structure is divided into functional segments: the hanger portion for opening, the elastic material for providing closing force, and the cap body for sealing. This segmentation allows each component to perform its specific function efficiently

Inventive Principle:
Principle #1Segmentation

2Reliability

If adhesive sheets are used to open and close the hole, then the structure is simple, but the adhesive strength weakens over time failing to fully close the hole

Engineering Contradiction:
Improveclosure reliabilityVSAvoidadhesive durability
Core Design Contradiction:
ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The adhesive sheet is designed as a single-use component that is removed after initial sealing, replacing it with the durable elastic material-based self-closing mechanism. The elastic material provides long-term reliable closure without degrading over time

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The adhesive sheet performs the preliminary function of initial sealing and closure, after which it is removed. This preliminary action allows the more durable elastic material system to take over for sustained reliable operation

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If the cap is left open after use, then access is easy, but water evaporates and wet wipes get contaminated

Engineering Contradiction:
Improveaccess convenienceVSAvoidevaporation and contamination
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The cap automatically closes itself using the elastic material's restoring force after being opened, ensuring that the opening is sealed without requiring user intervention. This self-closing action prevents evaporation and contamination while maintaining easy access during use

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The elastic material provides continuous mechanical feedback through its tension and restoring force, ensuring the cap returns to the closed position after opening. This feedback mechanism guarantees reliable sealing to prevent harmful effects

Inventive Principle:
Principle #23Feedback

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 self-closing cap system eliminates the need for manual closure, prevents contamination and evaporation, extends the lifespan of wet wipes, and reduces water usage in production, enhancing user convenience and product efficiency.

Implementation Method 1

a cap made using a mold having a hanger and an elastic material having proper elasticity to make the cap self-closing

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

combined with a magnet having magnetism to allow a user to easily open the cap to use the wet wipes

Methodology Applied
Scientific EffectMagnetism: Magnetism

Data Source

PatentUS20250025000A1Self-closing cap for preventing wet wipes from drying out
Publication Date: 2025.01.23 PARK GYU JIN
  • US20250025000A1 patent drawing
  • US20250025000A1 patent drawing
  • US20250025000A1 patent drawing

AI summary

One embodiment of the present disclosure relates to a self-closing cap which uses a hanger and an elastic material for self-closure, after injection molding a mold in a structure of a conventional wet wipes cap that is manually opened and closed and may remain open after use, so as to prevent drying and contamination of wet wipes and thus extend the shelf life of wet wipes and reduce the occasion of using an excessive amount of water during production of wet wipes to prevent drying.