Purge Compounds for Thermoplastics

Our Product - Ultra Purge™

Engineered to perfection, Ultra Purge™ products stand out as purging compounds of the highest efficiency. These compounds are meticulously formulated to seamlessly correspond with the materials, machinery, and processing ranges employed by plastic manufacturers who craft an extensive spectrum of final products.

Through collaboration with prominent global suppliers of plastic resins, colorants, and equipment, we consistently enhance our offerings, crafting the utmost potent purging compounds. Continuously perfecting our products allows us to effectively address the unique demands of every customer, accommodating their specific needs.

Common Problems Solved with this Solution

1) Plastic Color Contamination

Color contamination is when old color mixes with new plastic, especially problematic shifting from dark to clear shades. Changing colors in plastic takes time, affected by color type, machine, and thickness. If colors are used for a long time, they stick to the machine. Complex tools worsen color change, low polymer flow areas increase contamination. Using a special cleaner that works with your plastic helps save time and energy during color change.

2) Plastic Material Contamination

Material contamination arises from the mixing of different materials during production, causing issues like layers, spots, and dysfunctional parts due to varying properties like chemistry, thickness, or temperature. For instance, a non-bonding polymer may cover a heavier material, leading to pollution and structural changes, making recycling impossible and wasting resources. Purging compounds offer a solution by facilitating rapid, contamination-free material changes in machines, enhancing polymer compatibility and process flexibility.

3) Polymer Degradation/Black Spots and Black Specks

Material contamination and defects result from polymer or additive degradation within machines, causing varying degrees of scrap parts during production. Degradation from heat, oxidation, or inconsistent temperatures affects diverse polymers, forming residues that mix with the main polymer, causing contamination. This extends beyond heat-related issues, with black spots causing restart challenges. The right purge compound prevents residue buildup, solving material contamination effectively.

4) Shutdown Material

A shutdown material is used during machine idling, complete shutdowns, or when a regular polymer can’t perform due to degradation. Standard polymers can result in degraded residues, leading to more defects upon restart. Using them during shutdown causes extended residence time, heat stress, and oxidation, degrading the polymer. Larger machines experience more heat stress and residue buildup. A suitable purging compound cleans and resists degradation and oxidation during shutdowns with heat stability, minimizing issues.

5) Silver Streaking

Transitioning from PC to PMMA in machines can cause silver polymer lines mixed with transparent PMMA, resulting in continuous scrap parts, particularly significant in car lighting production. This occurs due to incompatibility and flat incursions in the PC polymer during the small PC processing with PMMA. Silver streaks alter PMMA’s appearance and transparency along polymer flow, causing part scrapping. Contaminated PCs cannot be reused for PMMA due to defects. A dedicated purging compound saves time and energy during this transition.

Why Choose Our Purging Compounds for Thermoplastics

Unrivaled Value

Chem-Trend’s sophisticated purging compounds go through thorough testing and are supported by worldwide research and development capabilities. This ensures the enduring presence of characteristics characterized by superior performance and quality.

20x More Efficient

in color and material changeover as compared to traditional approaches

Cost-effectiveness

Efficient cost management holds significance for your operational process. Integrating a top-tier purging compound minimizes the time and resources essential to cleanse machinery afflicted by color, polymer residue, or material deterioration. This contributes directly to establishing a stable production process and fostering enduring financial benefits.

Seamless Transition

Cutting-edge purging compounds facilitate a seamless shift between polymers that are incompatible or exhibit significant differences in processing temperatures. These compounds also offer a resolution for contamination challenges that arise during the switch to clear or transparent polymers, as well as during color changes. Such adaptability is imperative for applications involving hot runner molds and injection molding.