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Solvent dissolution contract manufacturing - List of Manufacturers, Suppliers, Companies and Products

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"Are you considering and selecting a subcontractor for dissolution processing?" *Materials are being presented!

"Are you considering and selecting a subcontractor for dissolution processing?" *Materials are being presented!

This document includes nine important checkpoints to consider during selection! Since organic solvents can be difficult to handle, why not look for a reliable outsourcing partner?

This document introduces how to choose a reliable contractor for handling difficult organic solvents (hazardous materials). It includes nine checkpoints such as "Is a hazardous materials handler (license holder) performing the work?" and "Is the stirring equipment 'explosion-proof' and '20-gallon tank'?" Please take a moment to read it. 【Contents】 ■ Checkpoints - To prevent accidents with hazardous materials - Initiatives for contamination prevention - Response to small batch and spot production *For more details, please refer to the PDF document or feel free to contact us.

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[Case Study on Problem Solving] Contamination Countermeasures

[Case Study on Problem Solving] Contamination Countermeasures

By changing the pre-manufacturing pot cleaning to "disassembly cleaning," we can significantly prevent contamination from previous products!

Before manufacturing, there was a problem where residual previous products that could not be completely removed during kettle cleaning (solvent cleaning) mixed into the products, leading to complaints. There were customers who wanted to use the kettle as a dedicated machine, but faced the challenge that the production volume was not sufficient for that. As a solution, by changing the kettle cleaning before manufacturing from "solvent cleaning" to "disassembly cleaning," we can significantly prevent the mixing of previous products. Our company can accept contract manufacturing starting from a minimum of 50L. Please feel free to contact us when you need our services. [Customer's Challenges] ■ Residual previous products that could not be completely removed during kettle cleaning (solvent cleaning) mixed into the products, leading to complaints. ■ Customers want to use the kettle as a dedicated machine, but the production volume is not sufficient for that. *For more details, please refer to the PDF document or feel free to contact us.

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"Are you able to clean the mixing tank?" I have estimated the amount of contamination from the previous product!

"Are you able to clean the mixing tank?" I have estimated the amount of contamination from the previous product!

As a general statement, we verified to what extent "residual product" remains in the stirring kettle (how much "residual product" could be removed through solvent washing?) from the non-volatile content.

Objective We verified how much "previous product" remains in the stirring tank (i.e., to what extent the "previous product" can be removed by solvent cleaning) through the measurement of non-volatile components. Verification Method (Solvent Cleaning Method) Immediately after producing resin solution A (dyed purple for visualization), solvent B (2 kg of new solvent) was added to the stirring tank (50L). This mixture was stirred at 40°C for 30 minutes, after which the non-volatile component 1 of the extracted solvent B was measured. Additionally, solvent B (another 2 kg of new solvent) was added, and the above process was repeated to measure non-volatile component 2. Verification Results Non-volatile component 1 = 2.9% → Extracted 58g equivalent of previous product (solid content) through solvent cleaning Non-volatile component 2 = 0.3% → Extracted 6g equivalent of previous product (solid content) through solvent cleaning * Measurement of non-volatile components: Dry weight loss method at 120°C for 30 minutes * Non-volatile component of solvent B (new) = 0.0% Discussion - The fact that non-volatile component 2 was lower than non-volatile component 1 indicates that the effectiveness of solvent cleaning has been confirmed "to some extent." However, although the "previous product" was diluted through two rounds of solvent cleaning, it was not completely removed. * To expect a cleaning method more effective than solvent cleaning, it is considered necessary to "disassemble" the stirring tank and clean the previous product adhered to the internal blades and walls.

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We thoroughly clean the inside of the mixing tank to prevent contamination!

We thoroughly clean the inside of the mixing tank to prevent contamination!

At our company, we disassemble and clean the mixing kettle with each product change to remove any residual material adhering to the inner walls and blades!

Our company specializes in the dissolution processing of rubber and resin (plastic) using organic solvents (hazardous materials, Category 4) and offers OEM services. "Efforts to Prevent Contamination" Generally, it is said that cleaning the interior of mixing tanks for hazardous materials is difficult, but our tanks can be disassembled after each product change to remove any residues adhering to the inner walls and blades (for tanks under 200L). *For more details, please download the PDF or feel free to contact us. TEL 048-723-8821 (Contact: Arai) e-mail kazuhiro.arai@chuo-jushi.com

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