Thermoplastic Polyamide Particles with BaSO4 Filler
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Solution Overview
Problem
Existing polyamide particles used in laundering processes are not easily removable and can be abrasive to textiles, affecting the efficiency and gentleness of the cleaning process, while also requiring optimization for improved laundering effects with reduced water, energy, and detergent usage.
Innovation Solution
Thermoplastic polyamide particles with a density of at least 1.65 g/cm³, an ellipsoidal shape, and incorporating particulate inorganic fillers like BaSO₄ with specific particle size distributions, which are easily produced by extrusion and pelletizing, ensuring non-abrasive and effective separation post-wash.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If polyamide particles are used for cleaning textiles, then cleaning effectiveness is improved, but removal of particles after washing becomes difficult
Solution Approach 1:
The invention changes the density parameter of polyamide particles by incorporating inorganic fillers (such as barium sulfate, calcium carbonate, or titanium dioxide) to achieve a density of at least 1.65 g/cm³. This density modification enables effective separation from textiles after washing while maintaining cleaning performance, thus resolving the contradiction between cleaning effectiveness and ease of particle removal.
2Productivity
If polyamide particles are used for cleaning, then laundering effect is enhanced, but particles can be abrasive to textiles
Solution Approach 1:
The invention creates a composite material system combining polyamide binder with inorganic filler particles. This composite structure provides the mechanical strength and cleaning effectiveness needed for laundry treatment while the filler particles can be selected to have appropriate hardness characteristics that prevent textile damage, thus resolving the contradiction between laundering effectiveness and textile gentleness.
3Productivity
If conventional polyamide particles are used, then cleaning is achieved, but water, energy, and detergent consumption remains high
Solution Approach 1:
The invention modifies physical parameters of polyamide particles (density, size distribution, shape) to optimize their cleaning mechanism. The enhanced particle characteristics improve soil removal efficiency, allowing for reduced detergent dosages and potentially shorter wash cycles, thereby decreasing overall water and energy consumption while maintaining cleaning performance.
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 described polyamide particles improve removal efficiency and gentleness on textiles, maintaining effective cleaning performance while reducing the amount of water, energy, and detergents used, and ensuring the particles do not damage the textiles.
Implementation Method 1
thermoplastic polyamide particles which have a density of at least 1.65 g/cm³
Implementation Method 2
can be easily produced by extrusion processes
Implementation Method 3
the shaping preferably being a pelletizing, more particularly an underwater pelletizing
Data Source
AI summary
Thermoplastic polyamide particles comprise at least one polyamide and at least one particulate inorganic filler having a density of at least 2.5 g/cm3, the thermoplastic polyamide particles having a density of at least 1.65 g/cm3, preferably at least 1.9 g/cm3, and an ellipsoidal or approximately ellipsoidal shape with a largest diameter of 1 to 100 mm, preferably 2 to 10 mm, more preferably 3 to 8 mm, or they comprise at least one polyamide and at least one inorganic filler, which is a particulate BaSO4 filler, having a D50-value of the particle size distribution of at least 10 μm and/or a D 90-value of at least 15 μm, preferably at least 40 μm.