Clarifying agent for plastic

Clarifying agent for plastic

Clarifying agent for plastic is a very important additive in the polymer industry. Clarifying additive, also known as nucleating masterbatch, is used to improve the clarity and mechanical properties of polymer products. These masterbatches are mainly produced based on polypropylene (PP) and are used in various industries such as the production of disposable containers, extrusion films, and polymer sheets. The clarifying additive increases the crystallization rate and reduces the size of the crystals, they make the light pass better and make the polymer more transparent.

With more than 20 years of experience in the production of colored, white, and black masterbatches, polymer compounds, and plastic additives, Kaysa Polymer Company has provided the best quality. Contact +989125436521 for more information on buying and selling Masterbatch and other products.

Table of content

What is clarifying agent for plastic?

The clarifying agent for plastic (Clarifying Additive) is a thick polymer additive that is used to improve the transparency and gloss of plastic products. These additives contain special compounds that can reduce the appearance of plastic defects, such as turbidity, darkness, and stains, and improve the appearance of the final product.

The mechanism of action of the plastic clarifying agent is that the very fine particles in this additive reduce the refraction of light between the polymer molecules, and as a result, the transparency of the polymer material increases. These materials can be added directly to the polymer or used as a masterbatch containing other compounds.

How does the clarifying additive work?

Clarifying agent is a type of additive that is used to increase transparency and control crystallinity in polymer products. Clarifying additives increases transparency in plastic products by changing the polymer crystallization process. In simpler words, these masterbatches make the final product transparent by influencing the arrangement of polymer molecules.

Imagine you have a frosted glass whose surface is full of large and irregular scratches. These scratches cause light scattering and prevent objects from being seen clearly behind the glass. Now imagine replacing these large scratches with lots of very fine, regular scratches. In this case, light scattering is reduced and you can see the objects behind the glass more clearly. The clarifying additive works in the same way and increases the transparency of the polymer by creating fine and regular crystals. Here’s how this add-on works:

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How the clarifying agent works

  1. Nucleation control: The clarifying additive reduces the nucleation time, which is the first step in the crystallization process, by adding nucleating agents. The clarifying agent in the masterbatch acts as a nucleating agent. This means that it increases the number of crystallization nuclei in the polymer. As a result, instead of forming large and irregular crystals, many small and regular crystals are formed. These nuclei act as the starting points for crystal growth. Despite the large number of these nuclei, the crystal growth is limited and their size becomes smaller.
  2. Formation of small crystals: The presence of many nuclei during the cooling of the plastic leads to the formation of small and regular crystals. Due to their smaller size than the wavelength of visible light, these crystals allow more light to pass through and help to increase the transparency of the final product. Smaller crystals scatter less light, resulting in a clearer product.
  3. Increasing the speed of crystallization: by accelerating the crystallization process, the time required for cooling and forming parts is reduced. This feature allows manufacturers to increase production speed and improve product quality.
  4. Improvement of mechanical properties: Clarifying masterbatches can also enhance the mechanical properties of plastic products. Smaller crystals cause a more uniform distribution of stresses in the product and increase its resistance. By creating a suitable crystal structure, the strength and hardness of polymers increases.
  5. Reduction of yellowness and turbidity: These additives help to reduce the yellowness caused by plastic recycling and give products a clearer appearance.

In short, the clarifying agent for plastic creates smaller and more uniform crystals by controlling the crystallization process of the polymer. This leads to increased transparency, improved mechanical properties, and increased production speed of plastic products.

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Advantages of using a clarifying additive

Clarifying additives (usually supplied as clarifying masterbatch) play a very important role in improving the quality and appearance of plastic products. These additives give clarity, gloss and better mechanical properties to the final products by different mechanisms explained in the previous answer.
Here are some of the most important advantages of using a clarifying agent for plastic:

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1. Improving transparency and gloss:

This is the most important advantage of these additives. By reducing the size of the crystals and increasing the uniformity of the polymer structure, light passes through the product more effectively and its transparency improves significantly.

2. Improving optical properties:

Clarifying additives can increase light transmission in plastic products. This property is very important in some applications, such as lenses and greenhouse coatings.
Also, these additives can reduce light scattering and make the images clearer and better quality seen behind the plastic.

3. Reducing turbidity and darkness:

Clarifying additives can reduce the turbidity of plastic products and give them a clearer and brighter appearance. This feature is especially important in products that require the display of internal contents, such as beverage bottles and food storage containers.

4. Improvement of mechanical properties:

In some cases, clarifying additives can improve the mechanical properties of plastic products, such as tensile strength and impact resistance. This feature is especially important in applications that require high strength, such as automotive parts and home appliances.

5. Ease of use and mixing:

Clarifying additives, especially masterbatches, are easily mixed with polymer raw materials. This makes the production process simpler and more efficient.

6. Increasing production speed:

By speeding up the crystallization process, the time required for production is reduced and this helps to increase production efficiency.

7. Saving costs:

In some cases, the use of clarifying additives can save costs. For example, by using a clarifying masterbatch, it is possible to use cheaper base resins and still produce products with high clarity.

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PP clarifying additive applications

Clarifying additives are used in the production of various types of plastic products, in which transparency and appearance beauty, in addition to desirable physical and mechanical properties, are among the required features. Below are some of the main uses of clarifying additives:

  • Food packaging: High transparency in food packaging allows consumers to see the contents inside, which increases trust in the product and inducement to purchase.
  • Beverage containers: Bottles and containers for beverages, such as mineral water, soft drinks, and juices, often require high transparency to be visually appealing.
  • Health and pharmaceutical products: Packaging of health and pharmaceutical products, such as shampoos, lotions, and medicines, where transparency makes the product appear high-quality and reliable.
  • Household and office supplies: some home and office supplies components such as decorative parts, and transparent covers for reports and folders, require beauty and transparency.
  • Automotive industry: In the automotive industry, clarifying additives are used to produce parts such as lights, side windows, and other components that require high transparency and resistance to environmental conditions.
  • Medical equipment: In the production of medical equipment, such as syringes, vials, and pharmaceutical bottles, which require transparency to view the contents and ensure quality, clarifying additives are important.
  • Toy industry: Clarifying additives are used to produce transparent and colored plastic toys that have a high visual appeal.
  • Films and labels: these additives are used in the production of transparent packaging films and labels that must have good transparency and adhesion.
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The use of clarifying additives in these applications helps produce products of higher quality, better visual appeal, and better performance, and this can help increase customer satisfaction and product marketing success.

Conclusion

Clarifying agents for plastic can consist of a variety of materials but usually include compounds that have good compatibility with polymers such as polypropylene (PP) and polyethylene (PE). The use of these additives in the production of plastics, in addition to improving transparency, can also help improve other properties such as heat resistance, strength, and impact resistance.

Buying and selling PP clarifying additives requires careful and thorough investigation. Considering the technical specifications, price, and reliable supplier, you can choose the best option for your needs. Also, using expert advice can help you in this process to make a better decision. For information on the selling price of the process aid masterbatch, contact the sales representative of Kaysa Polymer Company at +982122500033.

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