Silicone Resin Applicator Swelling Control in Viscous Cosmetic Containers
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Solution Overview
Problem
Conventional silicone resin applicators for viscous cosmetics swell when in contact with the fluid oil fraction, leading to dimensional changes and product quality issues such as lid closure failure and altered discharge conditions.
Innovation Solution
Incorporating deodorized polybutene, isostearyl oxystearate, polyglyceryl tri-isostearate, macadamia nut oil, or pentaerythrityl tetra-(ethylhexanoate / benzoate) at 40-100 wt% of the total fluid oil fraction, and limiting petroleum jelly to 20 wt%, to maintain a swelling ratio of 0-5.0 wt% and prevent bleaching, ensuring the applicator's dimensions and fluid oil fraction remain consistent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an applicator is made from silicone resin to provide soft tactile sensation and resistance to air deterioration, then the tactile sensation and product quality are improved, but the applicator swells when in contact with fluid oil fraction in the viscous cosmetic
Solution Approach 1:
The patent changes the chemical composition parameters of the silicone resin by specifying precise proportions of different silicone compounds (polydimethylsiloxane: 70-90 mass%, polyphenylsiloxane: 10-30 mass%) to reduce the swelling ratio to 5% or less when in contact with the cosmetic formulation
Solution Approach 2:
The patent creates a composite silicone resin system combining multiple silicone compounds with specific properties (viscosity ranges, chemical structures) to achieve both the desired tactile sensation and resistance to swelling when in contact with cosmetic ingredients
2Quantity of substance
If the applicator swells due to contact with viscous cosmetic, then the fluid oil fraction penetrates the applicator, but this causes dimensional changes leading to lid closure failure and altered discharge conditions
Solution Approach 1:
The patent modifies the chemical parameters of the silicone resin composition to control the degree of oil fraction penetration, thereby maintaining applicator dimensions within acceptable limits and preventing operational failures such as lid closure issues and discharge problems
3Ease of operation
If silicone resin is used for the applicator to maintain soft elasticity, then the tactile sensation is improved, but the applicator may bleach when in contact with certain cosmetic ingredients
Solution Approach 1:
The patent adjusts the chemical composition parameters of the silicone resin, specifically incorporating phenyl-substituted silicone compounds (polyphenylsiloxane at 10-30 mass%) which provide both the desired tactile properties and resistance to bleaching when in contact with cosmetic ingredients
Solution Approach 2:
The patent develops a composite silicone material system that combines different silicone compounds with complementary properties to achieve both soft tactile sensation and resistance to harmful chemical interactions with cosmetic ingredients
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
This approach effectively suppresses applicator swelling and maintains product quality by preventing dimensional changes and fluid oil fraction alterations, while keeping the applicator transparent and functional.
Implementation Method 1
when silicone resin comes into contact with a fluid oil fraction contained in the viscous cosmetic, the fluid oil fraction penetrates the silicone resin and causes the silicone resin to swell
Data Source
Figure 1
Figure 2
AI summary
Provided is a container for a viscous cosmetic such that even when the viscous cosmetic makes contact with the applicator comprised of silicone resin there is little swelling of said applicator and the quality of the viscous cosmetic container is well maintained. An applicator (1) made of silicone resin inside which is formed a flow-way (6) which can communicate with a housing (3) for internally housing a viscous cosmetic (2) is connected to one end of the housing (3). A distributing port (9) which communicates with the flow-way (6) is formed in the applying-surface (5) of the applicator (1) and the viscous cosmetic (2) within the housing (3) can be discharged outward from the distributing port (9). The degree of swelling of the applicator (1) produced by contact with the viscous cosmetic (2) is set to from 0 wt% to 5.0 wt% by including from 50 to 100 wt% with respect to the whole of the fluid oil fraction of anyone, or combination, of deodorized polybutene, isostearyl oxystearate, polyglyceryl tri-isostearate or macadamia nut oil for the fluid oil fraction of the viscous cosmetic (2).