Cleanroom Gown Visor with Detachable Snap-Fit Seal

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Solution Overview

Problem

Existing cleanroom gowns with visor hoods are difficult to manipulate, do not provide a complete seal, are uncomfortable, prone to fogging, and are not easy to clean or economically viable.

Innovation Solution

A hood for cleanroom gowns featuring a transparent, flexible visor made of polycarbonate that can be bent into a concave shape, integrated with a base body having a rectangular visor opening and fixing means with press snap buttons, cushions for comfort, and vapor permeable screens for breathability, allowing easy insertion and retraction for ergonomic fit and ease of cleaning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional goggles are used for the visor, then the hood can provide eye protection, but the goggles are difficult to manipulate, do not seal completely, are uncomfortable, and tend to fog

Engineering Contradiction:

Improveseal completenessVSAvoidmanipulation difficulty

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The visor is separated from the base body as a detachable component, allowing independent replacement and cleaning. The fixing means (snap buttons or Velcro) enable easy attachment and detachment of the visor from the base body, resolving the manipulation difficulty while maintaining seal effectiveness.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The visor is made from flexible transparent material (polycarbonate or similar) that can be bent into a concave shape to conform to the operator's face. This flexibility enables complete sealing around the face while maintaining comfort and preventing fogging through better breathability.

Inventive Principle:

Principle #30Flexible shells and thin films

2Strength

If the visor is made from rigid material, then it provides good protection, but it is difficult to clean and replace

Engineering Contradiction:

Improvevisor protectionVSAvoidcleaning and replacement

Core Design Contradiction:

StrengthVSEase of repair

Solution Approach 1:

The visor is designed as a separate detachable component from the base body, connected through fixing means (snap buttons or Velcro). This segmentation allows the visor to be easily removed for cleaning or replacement without damaging the base body, while the material maintains sufficient strength for protection.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The visor material is selected to have optimal balance of properties: transparent for vision, flexible enough to conform to face and be removable, yet strong enough to provide protection. The fixing mechanism parameters (snap force, Velcro adherence) are designed to hold securely during use but allow easy detachment when needed.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If the hood structure is made complex to ensure complete seal, then operational security is improved, but ease of cleaning and economic viability deteriorate

Engineering Contradiction:

Improveoperational securityVSAvoidcleaning ease and economic viability

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The hood is divided into modular components: base body and detachable visor. This segmentation simplifies cleaning (each part can be cleaned separately) and manufacturing (components can be produced independently and assembled), while the visor's detachable design ensures complete seal when properly attached through the fixing means.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The base body is designed with universal fixing means (snap buttons or Velcro) that can accommodate different visor types or configurations. This multi-functionality allows the same base body to work with various visor designs, improving economic viability through standardized manufacturing while maintaining operational security through consistent sealing capability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 solution provides a comfortable, secure, and clear vision while maintaining operational efficiency, ease of cleaning, and economic viability by ensuring a complete seal and reducing fogging issues.

Implementation Method 1

vapor permeable screens for breathability

Methodology Applied

Scientific EffectVapor permeability: Permeation

Implementation Method 2

The visor 16 is flexible and can be bent elastically into a concave shape

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentEP2781167B1Hood for cleanroom gown and corresponding cleanroom gown

Publication Date: 2020.05.13 INITIAL SARL

Figure 1~2
Figure 3~4

AI summary

This hood (6) for cleanroom gown (2) comprises a base body (8) defining an outside (O) and an inside (I) adapted to receive a head (10), the base body having a visor opening (12). The hood comprises a visor (16) and fixing means (18) adapted to releasably fix the visor to the base body over the visor opening.