This article will teach you about the two significant types of purging compounds: chemical and mechanical. Although it is crucial to understand the difference between these two types of compounds, understanding the critical characteristics of each type is not enough to choose the best CPC for your application. Among the factors to consider are the carrier resin, glass-filled grades, downstream equipment, hot runner, dead spot, and low flow areas.
Chemical
The market for chemical compounds used in purging is highly competitive, with global markets accounting for the largest share of this industry. The report covers the sales of purging compounds across different applications and geographies and provides quantitative and qualitative analysis. It also includes the opinions of industry experts and an assessment of parent market trends and governing factors. The report also maps the impact of different market factors on the global market for chemical compounds used in purging.
NCR Grade is a high-performance chemical purging compound suitable for color and material changes in thermoplastic injection molding machines. The product has an extended service temperature range ranging from 345 to 650 degrees Fahrenheit, eliminating the need for multiple grades. It is also straightforward to handle and mix and requires only a small amount of carrier resin. Compared to other chemicals used in purging, NCR Grade has a high melting point and is ideal for high-temperature purging.
Mechanical
The mechanical purging compounds for extrusion market are segmented by type, process, region, and geography. The North American region dominated the market in 2019 and is predicted to grow significantly. Processing facilities in the United States are a major driving force behind the market growth in this region. Other countries that exhibit substantial growth in this region include Egypt, Argentina, Venezuela, the UAE, and Saudi Arabia. The Asia Pacific region is also projected to grow at a considerable rate.
Purging compounds are a cost-effective method of reducing material waste in scrap parts. They can also reduce material waste due to color change defects and black spot contamination. Many manufacturers prefer mechanical purging compounds over natural resins for these reasons. Choosing a quality compound is critical to improving the overall quality of parts. By using the proper compound for color changes, your company can significantly reduce the number of scrap parts. You’ll save money by reducing material waste by using a high-quality compound.
Non-abrasive
One of the leading suppliers of non-abrasive purging compounds is Dyna-Purge. These products are engineered to flow naturally through injection molding and extrusion equipment while allowing the resin to be flushed and color loosened. They have a natural flow throughout the barrel of the extrusion or injection molding equipment and are available in various grade levels. The UL IDES database provides searchable material datasheets and datasheet management services for plastics manufacturing.
The purging composition of the invention can contain a metal adsorbate. The adsorbate may be a variety of substances that vary in compatibility with the composition and processing conditions. Phosphate esters, for example, can be used as adsorbents. Other preferred materials include sodium and potassium stearate, which are nearly insoluble and have melting points close to the die temperature.
Non-flammable
Purging compounds can be used to dissolve thermoplastic resins and colors from equipment. They can be used in a variety of applications and do not require soaking, and are non-flammable. Non-flammable purging compounds are also available that are FDA compliant. Some are also manufactured using standards from the European Union. The manufacturer may adhere to the ISO 9000 quality standard, which provides an internationally recognized framework for quality management systems.
When selecting a purging compound, you must consider its specifications, features, and operating temperature. Some require pre-soaking, while others are heat-activated and may require steam to remove resin deposits. They come in five, ten, and twenty-pound containers, with pellet-based compounds shipped in plastic barrels, heavy paper bags, or cardboard drums. You can use them in many different types of plastic molding processes.
Non-toxic
Purging compounds are resin-based products used to clean thermoplastic molding machines. These machines include blow molds, injection molds, extruders, and more. Purgex 457+ is one such product that is used in a wide range of industries. Its chemical composition is similar to that of natural resin. The compound is designed to remove residue left behind by resin and color changes. You can pour it directly into the hopper of a molding machine.
Using the wrong purging compound can result in unwanted defects, including color and material changes. In addition, these rejected parts add up to costly waste for the manufacturer. Non-toxic purging compounds contain resin pellets and other proprietary materials that work with different manufacturing processes and temperatures. Some are suitable for both commodity and engineering resins and are safe for use in hot runner systems. Non-toxic purging compounds are a good choice for mold purging, and the company offers trial quantities for its customers.