UV-Protected Transparent Container for Dye Stability

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Solution Overview

Problem

Substantially transparent multi-layer laminate containers are not suitable for products containing dyes and lakes as they discolor or degrade upon exposure to light, lacking appropriate protection.

Innovation Solution

A container with a multi-layered laminate body that includes an effective amount of ultra violet light absorbers, such as benzophenone, benzotriazole, and cerium oxide, which reduces UV light transmission to less than 10% between 280 nm and 400 nm, protecting products with dyes and lakes from light-induced degradation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a substantially transparent multi-layer laminate container is used, then the product visibility and aesthetic appeal are improved, but the product containing dyes and lakes undergoes discoloration and degradation due to light exposure

Engineering Contradiction:
Improveproduct visibilityVSAvoidlight-induced discoloration
Core Design Contradiction:
Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The container applies different optical properties to different layers: the outer layers remain transparent for visibility, while inner layers incorporate UV absorbers to block harmful radiation. This localized differentiation allows simultaneous achievement of product visibility and UV protection without compromising overall transparency.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The container uses a multi-layer laminate structure combining materials with different properties: transparent polymers for visibility and layers containing UV-absorbing compounds (benzophenone, benzotriazole, cerium oxide) for protection. This composite approach enables the container to provide both aesthetic transparency and functional UV shielding.

Inventive Principle:
Principle #40Composite materials

2Reliability

If UV protective measures are added to the transparent container, then the protection against light-induced degradation is improved, but the transparency and visual appeal of the container may be compromised

Engineering Contradiction:
Improveproduct stabilityVSAvoidcontainer transparency
Core Design Contradiction:
ReliabilityVSIllumination intensity

Solution Approach 1:

UV protection is localized to specific inner layers of the container rather than making the entire container opaque. The UV-absorbing layers are positioned strategically to block harmful radiation while outer transparent layers maintain visual appeal, achieving both protection and transparency through spatial differentiation.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The UV-absorbing layers act as intermediary elements between the external light environment and the product. These intermediate layers absorb UV radiation before it reaches the product, serving as a protective mediator that preserves both product stability and container transparency.

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 container maintains the visual appearance and stability of products containing dyes and lakes by preventing discoloration and degradation due to light exposure, ensuring the product's appearance remains intact throughout its effective life.

Implementation Method 1

the body comprises an effective amount of at least one ultra violet light absorber

Methodology Applied
Scientific EffectUltra violet light absorption: Absorption (EM radiation)

Data Source

PatentUS9682803B2UV-protected container with products having dyes or lakes
Publication Date: 2017.06.20 COLGATE PALMOLIVE CO
  • US9682803B2 patent drawing
  • US9682803B2 patent drawing

AI summary

A container and product system comprising a container adapted to house a product, the container comprising a substantially transparent multi-layered laminate body and a product housed in the container, the product comprising dyes, lakes, or both.