Cellulose Powder Composition for Impact-Resistant Smooth Cosmetics
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Solution Overview
Problem
Conventional solid powder cosmetics face challenges in achieving both impact resistance and a smooth, soft touch due to the use of elastic spherical resin powders, which result in poor moldability and cracking, while existing solutions focusing on components other than the powder do not adequately address these issues.
Innovation Solution
Incorporating a cellulose powder with specific particle size and aspect ratio, along with fine fibrous cellulose and additives, to enhance moldability and impact resistance by increasing contact points and reducing deformation during compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If elastic spherical resin powder is used to achieve smooth touch and moist feeling, then the solid powder cosmetic has poor moldability and cracks easily by impact
Solution Approach 1:
The invention changes the physical parameters of the powder particles by controlling aspect ratio (0.6 to 0.9) and particle size (1 to 25 μm), transforming the particles from perfectly spherical to slightly distorted shapes that can compress plastically during molding while maintaining smoothness. This parameter optimization allows the powder to achieve both ease of operation and reliability simultaneously.
Solution Approach 2:
The invention uses a composite powder system combining cellulose powder with specific aspect ratio and particle size characteristics. This composite approach integrates the benefits of natural cellulose structure with controlled geometric properties, creating a material that exhibits both plastic deformability for molding and impact resistance for reliability.
2Stability of the object's composition
If pressing pressure is increased to solidify the powder mixture, then the molded product becomes hard and has a powdery touch
Solution Approach 1:
The invention optimizes particle geometry parameters (aspect ratio 0.6 to 0.9) to enable effective solidification at moderate pressing pressures. The slightly distorted spherical shapes allow particles to pack efficiently and bond without requiring excessive force, thereby achieving stability while maintaining smooth touch properties.
3Ease of operation
If large amount of resin powder is blended to achieve smoothness, then the solid powder cosmetic has poor moldability
Solution Approach 1:
The invention changes the geometric parameters of the powder particles, specifically controlling aspect ratio within 0.6 to 0.9 and particle size within 1 to 25 μm. These parameter adjustments enable the powder to achieve smoothness through optimized particle packing while maintaining adequate moldability by preventing excessive elasticity that would hinder compression molding.
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 cellulose powder composition provides a solid powder cosmetic with improved impact resistance and a smooth, moist feel, addressing the limitations of conventional formulations.
Implementation Method 1
cellulose particles used in the present invention are plastically deformed when being compressed, thereby increasing a contact area between the particles and improving moldability and impact resistance of the solid powder cosmetic
Implementation Method 2
when a dispersion of fine fibrous cellulose is dried as it is, particles in which fibers are firmly and randomly bonded to each other by hydrogen bonding are obtained
Data Source
AI summary
A solid powder cosmetic that is smooth and is resistant to impact. The solid powder cosmetic contains a cellulose powder having an average particle size of 1 to 25 μm and an aspect ratio of 0.6 to 0.9, wherein the cellulose powder is an aggregate containing an additive and fine fibrous cellulose having an average fiber width of 1 to 500 nm.