Welcome to Rakhsh Sorkh, a leader in the polymer packaging industry and the first company in Iran to design and manufacture advanced blow-molding machinery for multiple-layer extrusion. Our flagship product, the Coex-3 machine, represents a significant breakthrough in packaging technology, offering unmatched quality and efficiency in the production of triple-layer polymer bottles.

Innovation and Expertise in Blow-Molding Machinery

The Coex-3 machine, designed and manufactured entirely by Rakhsh Sorkh from start to finish, is a testament to our technical expertise and innovative spirit. This state-of-the-art machine enables companies to produce bottles with diverse and optimized features, catering to various industrial needs. Below, we delve into the intricate process of triple-layer bottle production.

Production Stages and Features of Triple-Layer Bottles

Extruders and Layers

The Coex-3 machine employs a sophisticated extrusion process, resulting in bottles composed of three distinct polymer layers:

1. Inner Layer: This layer, consisting of 5% polyamide (PA), primarily provides the chemical resistance of the container. PA’s superior chemical properties prevent the bottle’s contents from interacting with other layers, thereby extending the product’s shelf life.
2. Middle Layer: Made up of 5% bi-copolymer (BI), the main function of this layer is to bond the inner layer to the outer layer. BI acts as an adhesive, ensuring the structural integrity of the bottle.
3. Outer Layer: This layer, composed of 90% high-density polyethylene (HDPE), provides the mechanical strength and exterior shape of the bottle. HDPE is the ideal choice for this layer due to its high resistance to impact and mechanical stress.

Layer Functions

• Chemical Resistance: The inner PA layer offers high resistance to chemicals, protecting the bottle’s contents from damage.
• Mechanical Resistance: The outer HDPE layer increases the bottle’s resistance to impact and pressure.
• Adhesion: The middle BI layer acts as a strong adhesive, bonding the inner and outer layers together, enhancing the bottle’s strength and durability.
• Prevention of Gas and Moisture Penetration: This combination effectively prevents the ingress or egress of gas and moisture, which is crucial for preserving products sensitive to humidity and air.

Benefits of Using Triple-Layer Bottles

The advanced technology of the Coex-3 machine offers several key benefits:

• Increased Product Shelf Life: The combination of these three layers results in bottles with a longer shelf life due to better resistance to chemical and mechanical factors.
• Design Flexibility: Using three different types of polymers allows manufacturers to produce bottles with specific features tailored to the unique needs of each product.
• Enhanced Durability: The multi-layer structure improves the chemical and mechanical resistance of the bottles, thereby extending the product’s useful life.

Technical Expertise and Exclusivity of Rakhsh Sorkh Company

Rakhsh Sorkh Company fully owns and manages all stages of designing, analyzing, and manufacturing machines for producing triple-layer and multi-layer polymer bottles from start to finish. Leveraging advanced technical knowledge, we have become a leader in the polymer packaging industry. The Coex-3 machine, a testament to Rakhsh Sorkh’s innovation, represents a significant breakthrough in packaging technology, offering unmatched quality and efficiency.

Ultimately, the use of the Coex-3 machine and the technology for producing triple-layer bottles not only enhances the quality and durability of products but also optimizes costs and increases the efficiency of the packaging process. This makes Rakhsh Sorkh a pioneer in the field of durable and high-quality packaging solutions.

Discover the future of polymer packaging with Rakhsh Sorkh and the Coex-3 machine. Experience the blend of innovation, quality, and efficiency that sets us apart in the industry.