Pre-Mixed Solvent for BOPP/OPP Film

OPP/BOPP Ink Dilution Solvent is a specialized product developed by K-Chem using an optimized formula that enhances ink adhesion, enables quick drying, and prevents plastic film distortion. This solvent is an ideal choice for the plastic packaging printing industry, where sharp, durable prints are essential, thanks to its excellent solubility and high compatibility with gravure and flexographic inks. The following article will explain in detail the concept, advantages and usage of ready-to-use ink solvents for OPP film printing.

What is Ready-to-Use Ink Solvent for BOPP/OPP Films?

Ready-to-use ink solvent for BOPP/OPP (Oriented Polypropylene) films is a liquid used to dissolve ink, adjust viscosity and enhance adhesion on the surface of OPP films. It ensures consistent ink dispersion, rapid drying, and produces sharp, long-lasting prints on OPP film surfaces.

Outstanding Features of K-Chem’s BOPP/OPP Ink Solvent

K-Chem’s ink solvent for BOPP/OPP films is the result of in-depth research into the properties of BOPP/OPP materials high-gloss plastic films that are notoriously difficult for inks to adhere to without a suitable solvent. K-Chem’s proprietary formula offers several outstanding advantages:

Superior Solubility

The solvent evenly disperses pigments and resins in the ink, preventing clumping or sedimentation. The ink maintains uniformity and color stability throughout the printing process. It is especially effective with solvent-based inks commonly used in gravure and flexographic printing.

High Adhesion on BOPP/OPP Films

OPP surfaces are hydrophobic and slippery; however, K-Chem’s solvent is specially formulated to strengthen the bond between ink and film. It performs particularly well on corona-treated films, ensuring the print does not peel, blur, or smudge—even under lamination or friction.

Optimized Evaporation Rate

The solvent is calibrated to dry at a moderate speed fast enough to prevent smearing or blocking, yet slow enough to allow the ink to spread evenly and adhere securely to the surface.

Complete Compatibility with BOPP/OPP

The formula is friendly to plastic films and does not soften, cloud, or compromise the mechanical durability of OPP films. The finished print retains its gloss, clarity, and high tensile and lamination strength.

Ideal Viscosity

The solvent adjusts ink viscosity to the optimal level, enhancing control over ink flow during printing. This prevents skipping, smearing, or pooling at the edges, resulting in sharp prints with even coverage.

Safe and Environmentally Friendly

K-Chem’s ready-to-use ink solvent for BOPP/OPP films has a mild odor and evaporates easily without causing discomfort during prolonged use. The formula emphasizes user safety and reduces VOC emissions aligning with modern industrial environmental standards.

Main Components of K-Chem’s BOPP/OPP Ink Solvent

For Gravure Printing Technology: Organic solvents such as Toluene (optional), MEK, EA, IPA, DMC, etc., are blended in optimal ratios to ensure strong ink adhesion and sharp image reproduction on OPP films.

For Flexographic Printing (Solvent-Based): Organic solvents like NPAC, NPA, Ethanol, etc., are used in ideal proportions to ensure proper ink adhesion and clear image rendering on OPP films, while also protecting the Anilox roller and printing plates from damage.

Contact K-Chem for more details about the solvent composition.

Instructions for Using Pre-Mixed Solvent for Printing Ink on BOPP/OPP Films – K-Chem Formula

Compatibility Check

Before mixing, ensure the solvent is compatible with the type of ink (gravure or flexographic) and OPP film.

Correct Mixing Ratio

Add solvent at a ratio of 15 – 25% of the ink volume, depending on the required viscosity and printing machine conditions.

Slowly add the solvent while continuously stirring for 3 – 5 minutes to ensure the solvent is fully dispersed in the ink, forming a homogeneous mixture.

Print Test

Before mass production, test print on OPP film to check adhesion, sharpness, and print quality.

Official Printing Use

Apply the mixed ink to the printing machine. Operate in a well-ventilated area, minimizing dust and high temperatures. Full protective gear, including gloves, masks, and safety glasses, must be worn to avoid direct contact with the solvent and ink, ensuring workplace safety.

Post-Use Cleaning

Immediately after printing, clean all equipment such as ink trays, printing rollers, and ink pipes with the same pre-mixed solvent to prevent ink from hardening, clogging, or affecting the next print. Tightly close the solvent container to minimize evaporation and contamination.

Storage Guidelines for K-Chem Pre-Mixed Solvent for Printing Ink on BOPP/OPP Films

Store in a Dry, Cool Place

The solvent should be stored in a dry area, away from moisture and direct sunlight. The ideal storage temperature is from 5°C to below 30°C. Avoid exposing the solvent to sunlight or high heat sources, as elevated temperatures may accelerate evaporation or cause undesirable reactions.

Sealed and Standard-Compliant Packaging

After use, the drum or canister must be tightly sealed to prevent solvent evaporation or contamination from the environment. Packaging should be made of specialized materials resistant to corrosion and non-reactive with chemicals.

Ensure Occupational Safety

Due to its volatile nature, the solvent storage area must have good ventilation to reduce vapor buildup. When handling the solvent, wear chemical-resistant gloves, safety goggles, and a specialized mask to minimize risks of skin, eye, or respiratory exposure. Completely avoid open flames, sparks, or heat-generating devices.

Regular Shelf Life Inspection

K-Chem recommends users check the manufacturing date and expiration date printed on the product packaging before use. Expired solvents may alter in properties, affecting solubility, drying performance, or ink adhesion quality.

Keep Out of Reach of Children

Although improved to have a mild odor and lower toxicity, the product is still classified as an industrial chemical. It should be stored in high places, secured with locks or clear warnings to prevent accidental exposure. Avoid direct contact with skin and eyes.

K-Chem – Supplier of Ready-to-Use Solvents for BOPP/OPP Film Printing Inks at Competitive Prices

K-Chem is a subsidiary of Kaiser International Group, headquartered in Hong Kong, specializing in the production and distribution of various industrial chemical lines such as paint strippers, ready-to-use ink solvents, and eco-friendly paint solvents, ensuring consistent product quality.

All K-Chem products are manufactured under the ISO 9001:2015 quality management system, meeting the stringent requirements of international markets as well as domestic legal regulations. With many years of experience in the industrial solvent field and a team of highly qualified technicians, K-Chem not only provides quality products but also offers optimized solutions tailored to each customer.

With a widespread distribution network, K-Chem is currently a long-term strategic partner of many major corporations such as Nanpao, Siegwerk, and Nippon Paint, demonstrating the reliability and practical effectiveness of its products.

In addition to focusing on quality, after-sales service is also a strength of K-Chem: from technical support and formula adjustments upon request to fast delivery and clear warranty policies. K-Chem’s customer service team is always ready to support partners through every stage, from testing to small- or large-scale production implementation.

Are you looking for a stable, high-adhesion solvent for OPP and BOPP film printing? Send your inquiry today for a free consultation from K-Chem!

K-CHEM VIETNAM CO., LTD

• Address: N6B Street, Lot F, Phu Chanh 1 Industrial Cluster, Phu Chanh Ward, Tan Uyen City, Binh Duong Province, Vietnam
• Phone: +84 274 362 0218
• Email: info@k-chem.vn