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2024-01-08 15:48:33

Filem TPU diperbuat daripada apa?

Filem TPU (thermoplastic polyurethane) adalah sejenis filem polimer yang digunakan secara meluas dalam pelbagai industri seperti tekstil, pembungkusan, automotif, dan perubatan. TPU film is known for its exceptional physical properties such as flexibility, durability, transparency, and chemical resistance. The film is made from a combination of different materials and additives that are carefully blended together to achieve the desired properties.

Komponen utamaFilem TPUis polyurethane, which is a synthetic polymer made by reacting diisocyanates and polyols. Poliuretana mempunyai struktur molekul unik yang memberikan sifat mekanikal yang sangat baik seperti keanjalan tinggi, keliatan dan rintangan lelasan. Polyurethane can be made in a wide range of forms, including foams, coatings, adhesives, and films. TPU film is a special type of polyurethane film that is produced by melt extrusion.

The process of making TPU film starts with the preparation of the raw materials. Poliuretana dicampur dengan pelbagai bahan tambahan seperti pemplastik, penstabil, pigmen, dan penyerap UV untuk meningkatkan sifat dan prestasinya. The exact composition of the TPU film depends on the intended use and application. For example, TPU films used in medical applications are formulated to be biocompatible and free of harmful chemicals.

Langkah seterusnya ialah penyemperitan cair, iaitu proses memanaskan dan mencairkan bahan mentah dan kemudian memaksanya melalui acuan untuk membentuk filem berterusan. The melt extrusion process is carried out using a TPU film extruder, which is a specialized machine designed for this purpose. The extruder consists of a hopper, a barrel, a screw, and a die. The raw materials are fed into the hopper, and then they are melted and mixed in the barrel by the screw. The molten mixture is then forced through the die, which shapes it into a thin film.

Once the TPU film is extruded, it is cooled and wound onto a roll. The film is then subjected to further processing such as slitting, laminating, and printing to make it suitable for specific applications. TPU film can be produced in various thicknesses, widths, and colors to meet the specific needs of the end-users.

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