EVA Black Masterbatch

EVA (ethylene-vinyl acetate copolymer) black masterbatch is a functional masterbatch specially used for coloring EVA materials. Its main features are as follows:

--- ### **1. High tinting strength and uniformity** - **High concentration of carbon black**: With high-pigment carbon black as the main pigment, a small amount of addition can achieve a deep black effect and reduce production costs. - **Excellent dispersibility**: Through special process treatment, the pigment is evenly dispersed in the EVA matrix to avoid color difference or surface spots, which is especially suitable for the blackness requirements of light-colored products.

--- ### **2. Highly compatible with EVA matrix** - **Carrier matching**: The masterbatch uses EVA resin as a carrier, and has excellent compatibility with EVA products (such as foaming materials, soles, and packaging films), without affecting the mechanical properties of the material (such as elasticity and flexibility). - **No interface defects**: Reduce the problem of product cracking or strength reduction caused by poor compatibility.

--- ### **3. Wide processing adaptability** - **Heat resistance and stability**: It can withstand EVA processing temperature (usually 100-200℃), and carbon black does not decompose at high temperature and does not produce volatiles. - **Process compatibility**: It is suitable for injection molding, extrusion, blow molding, foaming and other processes, especially in the foaming process, it can maintain uniform color and no blooming.

--- ### **4. Functional enhancement characteristics** - **UV resistance**: Carbon black itself has UV absorption ability, which can improve the weather resistance of products and extend the outdoor service life (such as floor mats, sports venue materials). - **Anti-static**: Conductive carbon black is added to some formulas to give EVA products anti-static properties, which is suitable for electronic packaging and other fields.

--- ### **5. Environmental protection and safety** - **Low migration**: The pigment is firmly coated and not easy to migrate to the surface of the product (avoiding contamination of contact objects). - **Environmental protection compliance**: It usually passes RoHS, REACH and other tests, and does not contain heavy metals or harmful substances.

Applications of EVA black masterbatch:

**Shoe materials**: Black coloring of soles and insoles, taking into account both aesthetics and wear resistance.

- **Foamed products**: Uniform foaming and coloring of yoga mats, floor mats, and cushioning packaging materials.

- **Packaging materials**: Black EVA film, hot melt adhesive, etc.

- **Industrial parts**: Products with high weather resistance requirements such as sealing strips and cable sheaths.

What's your advantage?

A: Honest business with competitive price and professional service on export process.

Can you provide a lot of product testing data?

A : We can provide all the product testing data.

How to judge the quality of black masterbatch from its appearance?

A:Good quality black masterbatch has moderate gloss and hardness. If it is too shiny, it means too much oil is added. If it is dull, it means the carrier is recycled or there is too much calcium carbonate.

Good quality black masterbatch is soft and brittle when bitten. If it is too soft, it means there is too much organic dispersant. If it is soft and loose, it means the carbon black concentration is low and contains more calcium carbonate. If it is too brittle, it means the carbon black content is too high or the carrier is recycled.

Does choosing black masterbatch with high carbon black content reduce costs?

A:Higher carbon black content means more difficult dispersion, and higher requirements for the shearing capacity of the equipment. It is necessary to equip the screw with a large aspect ratio, a mixing section, and wear resistance, which depends on the equipment.

For equipment with good mixing effect, using masterbatch with high carbon black concentration and adding less corresponding amount will save money. For equipment with limited mixing capacity, using masterbatch with high carbon black concentration will result in uneven dispersion and prominent pitting, resulting in a high scrap rate, which is not worth the loss. Maybe the production is not normal when using masterbatch with 40% carbon black content, but the effect is very good after using 35%.

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