中央樹脂化学 Product Lineup

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.

We manufacture a small amount of resin dissolving liquid in-house using drums and hand mixers, but we have concerns about safety and health regarding the handling of solvents. Additionally, we are worried about inspections by the fire department and the labor standards inspection office. Are there any customers who share these concerns? Our company operates in an environment equipped to handle hazardous materials, as reported to the fire department and the labor standards inspection office. We can produce resin dissolving liquid starting from a minimum of 50L, even on a spot basis. Please feel free to contact us when needed. [Issues] ■ We manufacture a small amount of resin dissolving liquid in-house using drums and hand mixers, but we have concerns about safety and health regarding the handling of solvents. ■ We are worried about inspections by the fire department and the labor standards inspection office. *For more details, please refer to the PDF document or feel free to contact us.

Our company specializes in the processing of dissolving rubber and resin in organic solvents, offering contract manufacturing services ranging from a minimum of 50 liters to a maximum of 3,000 liters. We accommodate a wide range of solvents, including toluene, MEK, and ethyl acetate, ensuring reliable dissolution based on customer-specified formulations. Our greatest strength lies in our "contamination prevention measures." While it is considered difficult to clean stirring tanks used for hazardous materials, we disassemble the tanks after each product change and thoroughly remove any residues attached to the inner walls and blades. This rigorous quality control minimizes the risks of color changes and foreign matter contamination. We also accept inquiries for processing high-viscosity products up to 60,000 mPa·s and difficult-to-dissolve materials. 【Features】 ■ Contract acceptance for solvent cutting of resins starting from 50 liters ■ Elimination of contamination through disassembly and cleaning after each product change ■ Possibility of dissolution studies for difficult-to-dissolve and high-viscosity resins ■ Small-lot and spot production system to prevent inventory stagnation * Please check the document summarizing "9 Checkpoints When Choosing a Contract Dissolution Processing Partner" available for download.

At Central Resin Chemical, we accept contract dissolution processing for "molded product release" using solvents starting from a minimum of 50L. Our explosion-proof stirring equipment is compatible with a wide range of organic solvents and achieves the appropriate formulation for dissolving specific resins. Notably, we perform "disassembly and cleaning of the stirring kettle" for each product change. By disassembling the kettle and physically removing any residual previous charge materials from the blades and inner walls, we thoroughly prevent foreign matter contamination (contamination) in the cleaning solution itself. We provide high-quality release agents and contribute to improving the yield in your molding process. 【Features】 ■ Contract dissolution solutions for molded product release starting from 50L ■ Thorough elimination of contamination through kettle disassembly and cleaning ■ We also accept inquiries for dissolving high-viscosity and difficult-to-dissolve materials ■ Support for optimizing hazardous material inventory with spot responses * Please check the document summarizing "9 Checkpoints When Choosing a Contract Dissolution Processor" available for download.

In dissolution processing, contamination and foreign matter due to residuals can lead to fatal defects in products. At Chuo Resin Chemical, we provide extremely high-purity solutions by combining our unique "stirring kettle disassembly cleaning" with precise "filtration processes." We physically remove dirt from the back of blades and wall surfaces that cannot be completely cleaned with conventional solvent cleaning, and further capture fine impurities through post-dissolution filtration. This enables us to meet the stringent quality requirements for contract manufacturing, such as for colorless and transparent resins and electronic materials. We accommodate small-scale production starting from a minimum of 50L, making it suitable for spot production of high-value-added products. We manufacture high-quality dissolution liquids in a clean environment based on your specified formulation. Please verify the precision of our filtration and cleaning technology with a free sample test. 【Features】 ■ Physically block contamination through kettle disassembly cleaning ■ Thoroughly remove fine foreign matter through precise filtration ■ Maintain high quality with small-scale production starting from 50L ■ Suitable for products where purity is critical, such as electronic materials * Please check the document summarizing "9 Checkpoints When Choosing a Contract Manufacturer for Dissolution Processing" available for download.

Are you troubled by contamination (foreign matter intrusion) during color changes or variety changes in the dissolution processing of resins and rubber? At Chuo Resin Chemical, we are committed to "disassembly cleaning" of stirring kettles and tanks that handle hazardous materials. It is difficult to completely remove the "residual material" left in the fine steps of the bearing and wall surfaces using common solvent washing or circulation cleaning. We disassemble the kettle and directly clean the inner walls and blades to physically remove the residual material. This thorough cleaning system enables us to maintain high transparency and purity even in contract manufacturing (OEM) with small lot and diverse production. We do not skip this cleaning process even for small production starting from 50 liters. 【Features】 ■ Thorough removal of residual material through disassembly cleaning of stirring kettles ■ No contamination even during color changes or diverse production ■ Physically clean even fine dirt inside the tank ■ Maintain high cleaning quality even for small lots starting from 50 liters *Please check the document summarizing "9 Checkpoints When Choosing a Contract Manufacturer for Dissolution Processing" available for download.

The challenges such as "fine black spots in the product" and "impurities found after dissolution" can be resolved by the dissolution and filtration technology of Chuo Resin Chemical. Our company standardizes "decomposition cleaning" in the dissolution process using explosion-proof equipment, effectively eliminating foreign matter contamination originating from the equipment. Furthermore, we add a filtration process tailored to the customer's specifications for the products after dissolution. We select meshes and filters to reliably remove even fine foreign matter that cannot be visually confirmed. Since we can handle everything from rubber mixing to dissolution in one contract, we can minimize the risk of foreign matter originating from raw materials. Companies that feel that "filtration cannot keep up with in-house equipment" or "there are limits to contamination countermeasures" are encouraged to take advantage of our free sample test. 【Features】 ■ Elimination of foreign matter from equipment through decomposition cleaning ■ Precision filtration to capture fine impurities ■ Strict quality control with small lot contracts starting from 50L ■ Consistent management from rubber mixing to dissolution * Please check the document summarizing "9 Checkpoints When Choosing a Contract Manufacturer for Dissolution Processing" available for download.

The quality of dissolution processing is determined by the "cleanliness of the equipment." At Chuo Resin Chemical, we have established a system to thoroughly prevent foreign matter contamination by disassembling and cleaning the mixing vessels and storage tanks after each product change. General solvent cleaning (flushing) alone may leave residues of high-viscosity resins and rubber in the corners, posing a risk of contamination in the next charge's product. However, our disassembly cleaning physically removes these residues. This prevents color mixing in transparent solutions and property changes due to foreign matter, ensuring high reliability as an OEM partner. We can accommodate volumes from a minimum of 50L to a maximum of 3,000L, providing cleaning quality that does not compromise even for small-scale production. We also welcome spot requests such as "I just want to create a production record once." 【Features】 ■ Physical barrier against foreign matter contamination through disassembly cleaning of vessels ■ Thorough cleaning that leaves no residues of high-viscosity products ■ Quality tank cleaning available from 50L ■ Peace of mind even for spot production with frequent product changes *Please check the document summarizing "9 Checkpoints When Choosing a Contract Dissolution Processing Partner" available for download.

At Chuo Resin Chemical, we have established a contract manufacturing system that caters to customers seeking "small-scale dissolution processing," starting from a minimum of 50L. When performing small-scale dissolution in-house, the burdens of equipment cleaning, solvent handling, and odor issues can be significant. However, by utilizing our contract services, you can greatly reduce these costs and risks. Even for small-scale production, we do not compromise on our strength in "disassembly cleaning of stirring tanks." We physically remove residues adhering to the inner walls and blades, providing high-quality solutions without foreign matter contamination. We accommodate various solvents such as toluene and MEK, and we can handle high-viscosity dissolutions of up to 60,000 mPa·s. With our spot production starting from 50L, we support your company's flexible business development. Please take advantage of our technology, starting with small-scale prototypes based on specified formulations. 【Features】 ■ Contract small-scale production starting from 50L with specialized equipment ■ High quality even for small quantities and diverse products through disassembly cleaning ■ Reduced burden of solvent handling and inventory management ■ Flexible response to spot production and prototype manufacturing *Please check the document summarizing "9 Checkpoints When Choosing a Contract Dissolution Processor" available for download.

If you are struggling with "dissolution tests" or "prototype manufacturing" in new product development, please consult Chuo Resin Chemical. Our company accepts dissolution processing of resins and rubbers using organic solvents starting from a minimum of 50L, providing a suitable scale for prototype development stages. We can use a wide variety of solvents such as toluene, MEK, and ethyl acetate, and we accept dissolution studies based on specified formulations. Our prototypes are not just about mixing. We thoroughly perform "disassembly and cleaning of mixing tanks" for each product change, allowing for accurate evaluation of development products without worrying about contamination from previous products. Our equipment, ranging from 50L to 3,000L, meets the needs of those who say, "Our in-house lab facilities have limitations" or "We want to consider scaling up for mass production." 【Features】 ■ Supports small-scale prototypes and studies starting from 50L ■ Accurate physical property evaluation through disassembly cleaning ■ Proposes dissolution processes for high-viscosity and difficult-to-dissolve products ■ Consistent support from prototype to mass production (3,000L) *Please check the document summarizing "9 Checkpoints When Choosing a Contract Dissolution Processing Partner" available for download.

The challenges such as "the viscosity of the concentrate is too high and difficult to handle" and "I want to eliminate the hassle of mixing solvents on-site" are solved by Chuo Resin Chemical's dilution and dissolution service. We accept processing of resin and rubber solutions diluted with solvents, adjusting to specified concentrations and viscosities starting from a minimum of 50L. Our explosion-proof stirring equipment allows for uniform and stable dilution work. Our commitment is to the "disassembly and cleaning of stirring tanks" for each product change. By removing residues that cannot be completely eliminated through general cleaning, we eliminate the risk of foreign substances contaminating the diluted product and maintain high quality. Additionally, we also accept requests for repackaging the diluted product into specified containers (drums, one-gallon cans, small bottles, etc.). First, please confirm our precise dilution processing with a free sample test. 【Features】 ■ Supports dilution and viscosity adjustment starting from 50L ■ Thorough contamination countermeasures through disassembly and cleaning ■ Consistent acceptance of repackaging into specified containers ■ Contributes to efficient inventory management and BCP measures *Please check the document summarizing "9 Checkpoints When Choosing a Contract Processing Partner for Dissolution" available for download.

If you need resin or rubber dissolution processing using toluene, leave it to Chuo Resin Chemical. Our company is equipped with explosion-proof stirring equipment and conducts contract manufacturing (OEM) of adhesives, sealants, and paints using toluene as the main solvent. We accommodate small production runs starting from a minimum of 50 liters, ensuring that we can supply only the necessary amounts without holding excessive inventory. Our greatest strength lies in the "disassembly and cleaning of the stirring kettle" performed during product changeovers. Toluene-dissolved products vary widely, but by physically cleaning the inner walls and blades of the kettle, we can reliably prevent contamination from previous charges. You can trust us even for products where clarity and physical properties are critical. We respond quickly and with high quality to requests such as "It has become difficult to handle toluene in-house" or "I want to outsource just a small amount on a spot basis." 【Features】 ■ Contract dissolution of toluene starting from 50L ■ Elimination of contamination during product changeovers through disassembly cleaning ■ One-stop support from rubber mixing to dissolution ■ We also accept inquiries for the dissolution of high-viscosity and difficult-to-dissolve products * Please check the document summarizing "9 Checkpoints When Choosing a Contract Dissolution Processor" available for download.

Central Resin Chemical offers contract manufacturing services specialized in the dissolution processing of rubber and resins using a wide variety of organic solvents such as toluene, MEK, ethyl acetate, and NMP. Our greatest strength lies in our flexible system that can accommodate production from a minimum of 50L, referred to as "ultra-small lots," to mass production of up to 3,000L. To address contamination concerns in dissolution processing, we thoroughly implement "disassembly and cleaning of the mixing vessel" for each product change. We physically remove residues from blades and walls that cannot be completely eliminated by standard solvent cleaning, allowing us to produce solutions of extremely high purity. We also accept processing requests for high-viscosity products with a maximum viscosity of 60,000 mPa·s and difficult-to-dissolve materials. Furthermore, we can provide a one-stop service from rubber "kneading" to "dissolution," significantly contributing to process shortening, quality stabilization, and reduction of logistics costs. 【Features】 ■ Supports dissolution processing with a wide variety of organic solvents ■ Capable of small-lot production and spot contracts starting from 50L ■ Eliminates contamination during product changeovers through vessel disassembly and cleaning ■ One-stop service from rubber kneading to dissolution *Please download the document summarizing "9 Checkpoints When Choosing a Contract Manufacturer for Dissolution Processing" for more information.

"We received an urgent order, but our company's capacity is insufficient. We would like to create a production record just once as part of our BCP measures." Central Resin Chemical responds to such spot melting needs. Our company welcomes spot production starting from a minimum of 50L and can flexibly accommodate one-time requests without regular or ongoing contracts. Even for spot production, our quality standards remain unchanged. We thoroughly implement "disassembly and cleaning of the mixing tank" for each product change, physically shutting out contamination from residual materials. We leverage our extensive knowledge to ensure the reliable melting and productization of high-viscosity materials (up to 60,000 mPa·s) and difficult-to-dissolve resins. By manufacturing only what is necessary when needed, we contribute to inventory optimization when "the fire department points out excessive hazardous material inventory" and help resolve stagnant inventory. [Features] ■ Capable of accepting one-time spot and single production melting ■ Reduces inventory risk with small-lot production starting from 50L ■ High purity even for spot products due to disassembly and cleaning ■ Suitable as a partner for BCP measures and excess inventory resolution *Please check the document summarizing "9 Checkpoints When Choosing a Contract Melting Processor" available for download.

"Too high viscosity leaves lumps behind" and "It takes too long to dissolve, making it inefficient." The specialized technology of Chuo Resin Chemical solves these challenges of high-viscosity resins and difficult-to-dissolve materials. Our company is equipped with powerful explosion-proof stirring equipment capable of handling viscosities up to 60,000 mPa·s. Using toluene, MEK, and various solvents, we process materials that are generally considered difficult to dissolve into a uniform solution. A key aspect of quality is the "disassembly and cleaning of the stirring vessel." High-viscosity products tend to leave residues on the walls and blades of the vessel, but our company physically disassembles and cleans it, allowing us to provide high-quality OEM manufacturing without foreign matter contamination, starting from a minimum of 50L. We support from the stage of dissolution consideration, proposing suitable solvent selection, temperature, and stirring conditions. 【Features】 ■ Capable of dissolving high-viscosity materials up to 60,000 mPa·s ■ Uniform processing of difficult-to-dissolve materials with powerful stirring equipment ■ Thorough elimination of residues from high-viscosity products through disassembly cleaning ■ Accepting small orders and dissolution considerations starting from 50L *Please check the document summarizing "9 Checkpoints When Choosing a Contract Dissolution Processing Partner" available for download.

"The stock of rubber solution that was produced in excess has been stagnant for nearly six months." "I was pointed out by the fire department about the excessive inventory of hazardous materials." These issues can be resolved through on-demand contract manufacturing by Chuo Resin Chemical. Our company accepts orders for rubber mixing and dissolution processing in units of "only what is needed," starting from a minimum of 50L. This eliminates the risk of excess inventory from large lot production and significantly reduces the costs and effort of inventory management. Our distinguishing feature is our commitment to "thorough disassembly and cleaning of mixing tanks," even for small quantities and on-demand orders, ensuring high quality is maintained. **Features** - Prevents excess inventory with small lot production starting from 50L - Supports the proper management of hazardous material inventory with on-demand services - High-quality management even for small quantities and diverse products through disassembly and cleaning - Shortens delivery times by accepting comprehensive orders from rubber mixing to dissolution *Please check the document summarizing "9 Checkpoints When Choosing a Contract Manufacturer for Dissolution Processing" available for download.*

"We want to reduce the use of organic solvents in the factory." "We would like to entrust the rubber dissolution process using solvents to a specialized contractor with thorough safety management." Central Resin Chemical will solve such challenges. Our company possesses extensive know-how in explosion-proof equipment and handling organic solvents, and we accept dissolution processing of rubber and resins using toluene and MEK starting from a minimum of 50L. By outsourcing the solvent usage process, you can improve your work environment, resolve odor issues, and significantly reduce the burden of hazardous material management in accordance with fire safety laws. Our strength lies in the "disassembly and cleaning of mixing tanks" for each product change. Through thorough cleaning, we provide high-quality products without contamination (foreign matter) regardless of the type. Since we can consistently handle everything from the rubber kneading process to dissolution, you can confidently entrust us with complex solvent kneading formulations. **Features** - Improve work environment by outsourcing organic solvent processes - Support for small-scale dissolution and solvent kneading starting from 50L - Thorough quality and contamination management through disassembly and cleaning - Significant reduction of burdens related to fire safety measures and hazardous material management *Please check the document summarizing "9 Checkpoints When Choosing a Contractor for Dissolution Processing" available for download.*

"We want to repack hazardous materials purchased in drums into smaller quantities. In-house repacking operations involve effort and risks." Central Resin Chemical will solve such challenges. Our company offers a service to repack hazardous materials such as organic solvents and resin solutions into specified containers, starting from a minimum of 50L. Our strength lies not only in simple repacking operations but also in thorough quality control through "disassembly cleaning" of mixing tanks and filling lines. By physically removing residues that cannot be completely eliminated through standard solvent cleaning, we can achieve high-quality repacking without foreign matter contamination. Additionally, we excel in handling high-viscosity liquids (up to 60,000 mPa·s), and we welcome inquiries about materials that other companies may refuse. 【Features】 ■ Accepts repacking of hazardous materials starting from 50L ■ Eliminates contamination during product changeovers through disassembly cleaning ■ Flexibly accommodates repacking of high-viscosity liquids ■ Significantly reduces in-house workload through spot support *Please check the document summarizing "9 Checkpoints When Choosing a Contract Manufacturer for Dissolution Processing" available for download.

At Chuo Resin Chemical, we offer specialized services for the dissolution processing of rubber and resins using organic solvents. ENEOS Materials' high-performance polymer "TETRAX" can also be dissolved using our unique technology. 【Features of Chuo Resin Chemical's Dissolution Processing】 ■ Small Batches: We can provide dissolution processing from a minimum of 50 liters to a maximum of 3,000 liters, tailored to customer needs and purposes. ■ Contamination Prevention: By "disassembling and cleaning" the mixing vessel after each product change, we can remove residues that cannot be cleaned with "solvent washing." Please feel free to consult us regarding the dissolution of high-viscosity or difficult-to-dissolve products. If you are experiencing slow dissolution speeds, improvements can be made through techniques such as rubber pretreatment. We are also actively accepting assistance with development projects and one-time requests. *Please feel free to contact us for test inquiries. *For details on contamination prevention and services, please download and view our catalog.

At Chuo Resin Chemical, we offer specialized services for the dissolution processing of rubber and resins using organic solvents. BASF Japan's high-performance polymer "Oppanol" can also be dissolved using our unique technology. **Features of Chuo Resin Chemical's Dissolution Processing** - **Small Batches:** We can provide dissolution processing from a minimum of 50 liters to a maximum of 3,000 liters, tailored to customer needs and purposes. - **Contamination Prevention:** By "disassembling and cleaning" the mixing vessel after each product change, we can remove residues that cannot be eliminated by "solvent cleaning." Please feel free to consult us regarding the dissolution of high-viscosity or difficult-to-dissolve products. If you are experiencing slow dissolution speeds, improvements can be made through techniques such as rubber pretreatment. We actively accept assistance with development projects as well as one-time requests. *For test inquiries, please feel free to contact us. *For details on contamination prevention and services, please download and view our catalog.

At Chuo Resin Chemical, we offer specialized services for the dissolution processing of rubber and resins using organic solvents. The nitrile rubber "Nipol," handled by ZEON Corporation, can also be efficiently dissolved using our unique technology. 【Features of Chuo Resin Chemical's Dissolution Processing】 ■ Small Batches: We can provide dissolution processing from a minimum of 50 liters to a maximum of 3,000 liters, tailored to the customer's needs and purposes. ■ Contamination Countermeasures: By "disassembling and cleaning" the mixing vessel after each product change, we can remove residues that cannot be cleaned with "solvent washing." Please consult us regarding the dissolution of high-viscosity or difficult-to-dissolve products. If you are experiencing slow dissolution speeds, improvements can be made through techniques such as rubber pretreatment. We actively accept assistance with development projects as well as one-time requests. *Feel free to contact us for test inquiries. *For details on contamination countermeasures and services, please download and view our catalog.

Our company specializes in the dissolution processing of rubber and resin (plastic) using organic solvents (hazardous materials class 4) and offers OEM services. ■ Feature 1: Small batch and spot production are acceptable Dissolution processing can be done from a minimum of 50L to a maximum of 3,000L, allowing us to produce only the necessary amount of dissolution liquid with specified formulations. *High-viscosity solutions can also be stirred (up to 60,000 mPa·s). We respond to needs such as: "I have a small demand but want to continue producing," "I want to produce a small amount on a spot basis as we are in the development stage," "I want to create a production record just once for BCP considerations." ■ Feature 2: Efforts to prevent contamination Generally, it is said that cleaning the interior of stirring tanks for hazardous materials is difficult, but our tanks can be disassembled after each product change to remove residues adhering to the inner walls and blades (for tanks below 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