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How is polypropylene anti-corrosion tape manufactured?

Release date:

2022-02-09

Polypropylene anti-corrosion tape boasts lightweight construction, stringent testing standards, excellent aging resistance, graphene‑resistance, UV‑radiation resistance, and high tensile adhesion strength. It is the preferred choice for cold‑applied anti‑rust pipeline coatings, particularly when corrosion resistance is a critical requirement. The manufacturing process involves blending materials, thermal sensitization, heating, extrusion molding, and sheet formation. A butyl rubber–bitumen composite serves as the corrosion‑resistant rubber layer, while the reinforcing fabric is carefully engineered to ensure optimal performance. Creep and aging tests under soil‑induced stress have demonstrated that this material can maintain its integrity for approximately 65 years when used in nickel‑based high‑temperature alloys. Now, let’s explore how polypropylene anti‑corrosion tape is produced.

　　Polypropylene anti-corrosion tape boasts lightweight construction, stringent testing standards, excellent aging resistance, graphene‑resistance, UV‑radiation resistance, and high tensile adhesion strength. It is the preferred choice for cold‑applied anti‑rust pipeline coatings, particularly in applications where corrosion resistance is critical. The manufacturing process involves mixing, thermal sensitization, heating, extrusion molding, and sheet forming, with a butyl rubber–asphalt compound serving as the corrosion‑resistant rubber layer. Only this type of sheet features a well‑balanced synthetic fiber reinforcement. Creep and aging tests under soil‑induced stress have demonstrated that, when used with nickel‑based superalloys, its service life can reach approximately 65 years. Now, let’s take a closer look at how polypropylene anti‑corrosion tape is produced.

Polypropylene anti-corrosion tape

　　Polypropylene anti-corrosion tape uses a butyl rubber–asphalt compound as its corrosion-resistant rubber layer, and has found widespread application thanks to the simplification it brings to construction projects. Next, we will explain how polypropylene anti-corrosion tape is used.

　　1. Painting: When applying paint with polypropylene tape, use the paint provided by the service facility. Stir the paint thoroughly until uniform, and after painting, wait approximately 12 minutes before beginning to apply the tape.

　　2. Metal Surface Treatment: In metal surface treatment, key considerations include rust prevention, welding, and the removal of air‑borne contaminants. When using adhesive tapes, it is essential to ensure that any heat‑sensitive residues are thoroughly removed.

　　3. Backfilling the Trench: According to available information, quality inspections are required after the initial phase of the tape‑lining project. Once the quality‑inspection and竣工验收 (completion acceptance) procedures have been successfully completed, backfilling can proceed. During backfilling, attention must be paid to the safety factor of the tape.

　　So, what are the key features and advantages of polypropylene anti-corrosion tape?

　　1. Both the polypropylene anti-corrosion tape and the seamless pipe exhibit strong adhesion, with a tensile strength ranging from 18 to 50 N/mm². They can effectively prevent liquid media from penetrating the surface of the seamless pipe, and when buried, they maintain high adhesive and tensile strength for many years.

　　2. Polypropylene anti-corrosion tape exhibits excellent tensile strength and elongation. It remains flexible over a wide temperature range, with a base material tensile strength ranging from 140% to 700%. High-density polyethylene adhesive tape can be applied at temperatures as low as −21°C and is commonly used down to −60°C, with a embrittlement temperature of −70°C.

　　3. Polypropylene anti-corrosion tape boasts high tensile strength, with a tensile strength of approximately 40 MPa. It can withstand the typical mechanical forces encountered during pipeline handling and installation, as well as the ground stresses imposed by the surrounding soil after direct burial. Moreover, its smooth surface helps prevent delamination or displacement of the protective coating when the pipe shifts relative to the soil during underground installation.

　　Based on the detailed information provided earlier, it’s also important to have a thorough understanding of polypropylene anti-corrosion tape. Polypropylene anti-corrosion tape is an eco‑friendly adhesive tape that finds wide application; let’s first examine the differences between the two.

　　Difference 1): Polypropylene anti-corrosion tape is made from PET raw material and contains polyester fibers, whereas high-density polyethylene anti-corrosion tape uses a high-density polyethylene base film and a butyl rubber adhesive layer.

　　Difference 2): Polypropylene anti-corrosion tape exhibits superior adhesion and higher tensile strength, making it suitable for packaging household appliances and rubber products, while high-density polyethylene rust‑preventive tape provides corrosion resistance on the outer surface of steel pipes.

　　That concludes our explanation of how polypropylene anti-corrosion tape is manufactured. For more information, please feel free to contact us at any time!

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How is polypropylene anti-corrosion tape manufactured?

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