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This section provides an overview for purging compounds as well as their applications and principles. Also, please take a look at the list of 10 purging compound manufacturers and their company rankings. Here are the top-ranked purging compound companies as of February, 2025: 1.Calsak Corporation, 2.Plastic Solutions International LLC, 3.Asahi Kasei Asaclean Americas.
Table of Contents
A purging compound is a cleaning agent used in resin molding machines when changing materials. It removes resin and carbides from metal surfaces. Normally, a resin molding machine is operated by changing the color of the resin or the type of resin. However, if the cleaning process is omitted, residual material from the previous material will be mixed in, reducing the yield rate. As a result, not only does resin waste increase, but labor and other costs are also reportedly incurred. Therefore, purging compounds are used to prevent yield loss. In recent years, many purging compounds have used boric acid as the main ingredient, allowing cleaning without damaging the molding machine.
Purging compounds are used to clean resin molding machines when changing materials or colors. When changing material type or color, it is necessary to clean the previous material adhering to the molding machine. Specifically, it is not always necessary to clean, but if subsequent materials are fed without cleaning, they will mix with the previous material, resulting in lower yield and material loss, which is time-consuming and costly. It is also possible to remove carbides and black spots that adhere to molded products. However, the appropriate purging compound varies depending on the resin used and must be confirmed in advance.
This section describes the cleaning process using purging compounds. Note, however, that it may vary depending on the material and molding machine used before and after.
Ensure discharging the pre-material since a high cleaning effect cannot be achieved with residual pre-material. Also, discharge hoppers and supply lines in the same manner.
The specified amount of purging compound is fed, but the amount and frequency of feeding need to be devised since the cleaning effect will be lower in uneven areas.
To increase work efficiency, back pressure should be increased and injection speed should be set higher. Also, the cleaning temperature should be maintained at the molding temperature of the previous material.
Visually confirm that all previous material has been removed and stop the molding machine.
After changing the molding temperature of the post-material, load the material.
Perform the same operation as during cleaning to discharge the purging compound completely. After confirming that the purging compound has been completely removed, move on to the normal molding operation.
*Including some distributors, etc.
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Calsak Corporation, established in 1972 with its headquarters in Los Angeles, California, USA, is a manufacturer of plastic sheet, rod, tube, and film. The company’s product range includes various plastic materials, including acrylics, polycarbonates, and engineering plastics. These products offer versatility, durability, and optimal material properties. The benefits of the products include easy fabrication, lightweight solutions, and resistance to weather and impact. The products serve industries such as signage, construction, aerospace, and automotive, providing essential plastic materials that cater to diverse applications, allowing customers to create unique and functional solutions across various plastic product sectors.
iD Additives, Inc., established in 1986 in La Grange, Illinois, USA, is a manufacturer and supplier of unique foaming and cleaning solutions for the plastics industry. The product range includes a diverse portfolio of additives, masterbatches, and purging compounds designed to enhance plastic processing, improve material performance, and streamline production. The benefits of the products include improved material dispersion, increased processing efficiency, and reduced scrap during color and material changes. The company serves industries such as plastics manufacturing, injection molding, extrusion, and rotational molding, providing essential additives that ensure optimal material quality, cost savings, and optimized production processes.
Plastic Solutions International LLC, known for "Purge Right," was established in 1983, in Statha, Georgia, USA, and is a manufacturer of premium purging compounds for the plastics industry. The company’s product lines, Purge Right and Purge Clear, are designed to efficiently clean extrusion and injection molding equipment during color and material changes. It reduces downtime, prevents contamination, and optimizes production. The benefits include reduced material waste, improved color change efficiency, and enhanced equipment longevity. These solutions serve industries such as plastics manufacturing, injection molding, extrusion, and blow molding, offering a critical solution that ensures clean, efficient, and cost-effective plastic production.
Neutrex Inc, established in 1992 in Houston, Texas, USA, is a manufacturer of advanced purging compounds for the plastics industry, designed to clean extrusion and injection molding equipment. The product line involves Purgex purging compounds, acknowledged for their efficiency in removing color and material residues, reducing downtime during color changes, and preventing contamination. The benefits of the purging compounds include improved operational efficiency, reduced material waste, and minimized equipment downtime. The company serves industries such as plastics manufacturing, injection molding, extrusion, and blow molding, providing essential purging solutions that optimize production processes, reduce costs, and ensure consistent streamlined plastic products.
Slide Products, Inc., is based in Wheeling, Illinois, United States, and specializes in providing solutions for plastic processing and mold-making problems since 1953. Slide offers cleaners, specialized mold releases, high-temperature grease, and purging compounds to various customers including injection molders, extruders, and blow molders. The company also provides contract filling and packaging services to other aerosol and liquid product manufacturers for degreasers, brake cleaners, silicone sprays, as well as penetrating oils.
Premix Group, established in 1980 in Hämeenlinna, Finland, is a manufacturer of electrically conductive and reinforced plastic compounds. The company’s product category includes conductive compounds, sheet materials, antimicrobial plastics, and custom-engineered compounds. These products offer improved conductivity, mechanical properties, and customized solutions for various industries. The product benefits include enhanced electrical performance, reduced material waste, and tailored solutions for specific applications. These compounds serve industries such as electronics, automotive, medical devices, and industrial manufacturing, providing essential plastic compounds that assist in improved product performance, reduced costs, and unique solutions across diverse plastic manufacturing sectors.
Asahi Kasei Asaclean Americas, established in 1990 in Parsippany, New Jersey, USA, is a manufacturer of optimal purging compounds for the plastics industry. The product range includes Asaclean purging compounds, designed to clean and optimize injection molding and extrusion machines. These products offer reduced downtime, reduced material waste, and increased production efficiency. The benefits of the purging compounds include faster color and material changes, reduced carbon buildup, and improved product quality. The company serves industries such as plastics manufacturing, injection molding, extrusion, and blow molding, providing essential purging solutions that enhance production, reduce costs, and ensure consistent and optimal plastic products.
Intro-Tec LLC, established in 1970, in Miramar, Florida, USA, is a manufacturer of purging compounds and advanced solutions for the plastics industry. The company specializes in Coratex purging compound, which is efficient in the cleansing and manufacturing of plastic compounds. It offers various coratex additives, masterbatches, and purge compounds that are intended to speed up production, increase material performance, and improve plastic processing. The products include advantages including precise material dispersion, more effective processing, and less scrap during color and material changes, ensuring superior material quality, cost savings, and streamlined production processes for plastics manufacturing, injection molding, extrusion, and rotational molding.
EMI Corporation, is a manufacturer based in the United States, specializing in providing innovative, end-of-barrel products for injection molding machines, established in 1968. The company’s products cater to the growing injection molding industry. These include technology to automate the handling of plastic molded parts. Since 2001, it has been helping customers with End of Arm Tooling, from the right vacuum cups to designing fully-engineered complete project sets. By using its comprehensive expertise to perform a wide range of services for clients, from supplying ready-to-use components from major manufacturers, to providing complete custom-designed components and build services.
Invotech Solutions Limited is a manufacturer and distributor of mold shop and plasticizing products that was established in Buckinghamshire, the United Kingdom, in 2005. The company specializes in producing components and equipment for molding and plasticizing operations. These products include shut off nozzles, insulation jackets, and magnetic water filtration solutions. It also offers mold ancillaries such as filters or mixers from brands such as Samixco, Athena, and Smartflow. The company chiefly serves its clients in the consumer electronics, automotive, and industrial packaging sectors.
Ranking as of February 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Calsak Corporation |
19.9%
|
| 2 | Plastic Solutions International LLC |
13.7%
|
| 3 | Asahi Kasei Asaclean Americas |
13.7%
|
| 4 | Slide Products, Inc. |
11.6%
|
| 5 | Premix |
8.2%
|
| 6 | iD Additives, Inc. |
8.2%
|
| 7 | EMI Corp. |
7.5%
|
| 8 | Intro-Tec LLC |
6.8%
|
| 9 | Neutrex, Inc. |
6.8%
|
| 10 | INVOTEC SOLUTIONS LIMITED |
3.4%
|
Derivation Method
The ranking is calculated based on the click share within the purging compound page as of February 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
5 | 71.4% |
|
Finland
|
1 | 14.3% |
|
United Kingdom
|
1 | 14.3% |
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