A film that is made of hot melt polyurethane resin is known as TPU hot melt adhesive film (also known as hot melt polyurethane adhesive film). The following activities make up a significant portion of its manufacturing process:
The production of resin begins with the production of polyurethane (TPU) resin. Isocyanates and polyols undergo a reaction in the process, which enables this goal to be attained. Within the context of this process, altering the proportions of the raw materials used allows for the production of TPU resins with a variety of different performance characteristics.
Pretreatment: In order to reach the desired level of dryness, polyurethane adhesive film is necessary to pretreat the TPU resin particles. This is done so that during the subsequent melting and extrusion processes, the resin will have a low moisture content, preventing the formation of air bubbles and other defects.
The pellets of pre-treated thermoplastic polyurethane (TPU) resin are melted, and then they are extruded through a die. After that, the molten TPU resin is put through an extruder so that it can be formed into a film. Extruders typically include a heated screw that pushes molten resin through a die in order to form the film in the desired shape and thickness.
The extruded hot-melt TPU film requires both cooling and shaping after it has been processed through an extruder
During the cooling process, the film changes from a molten state to a solid state, enabling it to keep the shape and size that was originally intended
In order to maintain a smooth and consistent surface on the film, the cooling process is typically carried out on a chill roll
It is possible to stretch the film in both the vertical and horizontal directions in order to enhance its performance characteristics, such as its tensile strength and resistance to abrasion. However, this is merely an optional step. This is accomplished by stretching the film at a specific temperature and speed while doing so simultaneously, which causes a change in the film's molecular structure as well as its performance characteristics.
Cutting and coiling: The last step in the process involves cutting the completed TPU hot melt adhesive film into the required width and length before winding it up into rolls. During this step of the process, release paper or other types of protective layers can be added as necessary to prevent the films from adhering to one another.
In a nutshell, the production process for TPU hot melt adhesive film consists of the following steps: production of the resin, pretreatment, melting, and extrusion.
What are some benefits associated with using tpu hot melt adhesive film hot melt adhesive film?
The TPU hot melt adhesive film has good adhesion performance and can form a strong bond with a variety of materials (including textiles, plastics, metals, and so on). This is due to the film's excellent adhesion performance. Because of this, TPU hot melt adhesive film has become the adhesive material of choice in a variety of different industries.
High degree of bendability and stretchability; the TPU hot melt adhesive film has a high degree of bendability and can withstand significant bending and stretching without breaking. Because of this, TPU hot melt adhesive film is an advantageous choice for applications that call for both flexibility and elasticity.
Wear resistance is demonstrated by the TPU hot melt adhesive film's high level of wear resistance, which enables it to withstand the daily wear and tear and scratches that occur during use. Because of this, the TPU hot melt adhesive film is an excellent choice for applications that call for a high level of wear resistance.
Resistance to the elements: The TPU hot melt adhesive film is resistant to the elements and can withstand harsh environmental conditions such as ultraviolet rays, high temperatures, low temperatures, and humidity. It also has good weather resistance. This ensures that the TPU hot melt adhesive film has a lengthy lifespan for use in applications that take place in harsh environments and outside.
TPU hot melt adhesive film has good biocompatibility, making it suitable for use in medical devices and other health care products due to its biocompatibility. Because of this, the TPU hot melt adhesive film has the potential to be used in a diverse assortment of medical-related applications.
