Surface-Treated Glass Cullet for Polymer Antiblocking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge is to find an inexpensive and effective particulate material with desirable optical and physical properties for use as an antiblocking agent in polymer compositions, as conventional materials can be costly and have limitations in properties such as brightness and yellowness.
Innovation Solution
Incorporating surface-treated particulate glass cullet with a d90 of less than 20 µm into polymer compositions, which enhances brightness and reduces re-aggregation, making it suitable for various applications including films, paints, and cosmetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional antiblocking fillers are used, then antiblocking properties are achieved, but cost increases and optical properties (brightness, yellowness) are limited
Solution Approach 1:
The patent replaces expensive conventional antiblocking fillers (such as ground calcium carbonate, talc, or silica) with a cheaper alternative: finely ground and surface-treated glass cullet (recycled glass). The glass cullet is processed to achieve the necessary functional properties at lower cost while maintaining or improving performance.
Solution Approach 2:
The patent modifies the physical and chemical parameters of glass cullet through surface treatment processes. By changing the surface properties of the glass particles (such as applying surface coatings or chemical treatments), the material achieves improved dispersion, reduced re-aggregation, and enhanced antiblocking performance, making it suitable as a polymer filler.
2Reliability
If conventional antiblocking fillers are used, then antiblocking properties are achieved, but optical properties (brightness, yellowness) are insufficient
Solution Approach 1:
The patent replaces expensive conventional antiblocking fillers (such as ground calcium carbonate, talc, or silica) with a cheaper alternative: finely ground and surface-treated glass cullet (recycled glass). The glass cullet is processed to achieve the necessary functional properties at lower cost while maintaining or improving performance.
Solution Approach 2:
The patent modifies the physical and chemical parameters of glass cullet through surface treatment processes. By changing the surface properties of the glass particles (such as applying surface coatings or chemical treatments), the material achieves improved dispersion, reduced re-aggregation, and enhanced antiblocking performance, making it suitable as a polymer filler.
3Reliability
If glass cullet is ground to fine particle size, then antiblocking properties improve, but re-aggregation of particles occurs
Solution Approach 1:
The patent modifies the physical and chemical parameters of glass cullet through surface treatment processes. By changing the surface properties of the glass particles (such as applying surface coatings or chemical treatments), the material achieves improved dispersion, reduced re-aggregation, and enhanced antiblocking performance, making it suitable as a polymer filler.
Solution Approach 2:
The surface treatment acts as an intermediary layer on the glass cullet particles, preventing direct interaction between particles that would cause re-aggregation. This intermediary coating maintains particle separation and stability in the polymer composition.
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 use of surface-treated particulate glass cullet provides antiblocking properties comparable to or better than conventional fillers, offering improved brightness and reduced yellowness, while being an economical and sustainable solution, effectively reducing the blocking force and haze in polymer films.
Implementation Method 1
wherein the particles of the glass cullet are surface treated to modify one or more properties of the cullet
Implementation Method 2
having a d90 of less than 20 µm, wherein the d90 is measured by laser light particle size analysis using a CILAS (Compagnie Industrielle des Lasers) 1064 instrument
Data Source
Figure 1a~1f
Figure 2a~2d
Figure 2e~2j
AI summary
There is disclosed a particulate glass cullet having a d90 less than about 20 µm, and a particulate glass cullet having a d90 wherein the particles have been surface treated to modify on or more properties of the cullet. The particulate materials may be obtained by a suitable grinding process. The particulate glass cullet and surface treated particulate glass cullet are useful as anti-blocking pigments in polymer compositions.