Choose the right TPU hot melt adhesive film thickness, and the process will be excellent and worry-free
Choosing the right TPU hot melt adhesive film thickness is crucial to ensuring an excellent and worry-free process. Here are some detailed suggestions on how to choose the appropriate TPU hot melt adhesive film thickness:
1. Understand the basic characteristics of TPU hot melt adhesive film
TPU hot melt adhesive film is a film made of thermoplastic polyurethane material with excellent weather resistance, abrasion resistance, water resistance and oil resistance. These characteristics make TPU hot melt adhesive film widely used in many fields, such as clothing, shoe materials, tent production, etc.
2. Consider the key factors when choosing thickness.
Functional requirements:
According to the application scenario and product requirements, select the appropriate thickness to meet performance requirements such as adhesion, wear resistance, and weather resistance. For example, in footwear manufacturing, you need to choose TPU hot melt adhesive film with strong adhesion and wear resistance; while in clothing manufacturing, you may need to pay more attention to its softness and breathability.
Cost considerations:
Increased thickness results in higher material costs. Therefore, on the premise of meeting performance requirements, try to choose a thinner thickness to reduce costs. At the same time, the impact of factors such as production efficiency and scrap rate on costs must also be considered.
Processing technology:
Different processing techniques have different requirements for the thickness of TPU hot melt adhesive film. For example, during the hot press molding process, a film that is too thin is prone to wrinkles or deformation; while a film that is too thick may cause uneven heat distribution and affect processing quality. Therefore, when selecting the thickness, it is necessary to fully consider the characteristics and requirements of the processing technology.
3. Selection range of specific thickness
The thickness of TPU hot melt adhesive film is usually between 0.02mm and 3mm. Among them, 0.01mm is called one wire, and 0.15mm is equivalent to 15 wires. Generally speaking, thinner TPU hot melt adhesive films (such as 0.02mm to 0.1mm) are suitable for applications that require higher flexibility and wear resistance; while thicker TPU hot melt adhesive films (such as 0.5mm to 0.1mm) are suitable for applications that require higher flexibility and wear resistance. 3mm) is suitable for applications that require higher adhesion and weather resistance.
4. How to choose thickness
Experimental Method:
Through actual testing of the performance indicators (such as adhesion, abrasion resistance, weather resistance, etc.) of TPU hot melt adhesive films of different thicknesses, the optimal thickness can be determined. This method requires a certain investment of time and resources, but can directly reflect the actual performance of the product.
Theoretical calculation:
Based on the principles of material mechanics and rheology, a mathematical model is established to theoretically calculate the thickness of the TPU hot melt adhesive film. This method requires certain professional knowledge and experience support, and the calculation results may have certain errors.
Rule of thumb:
Based on production practice and experience accumulation, the recommended thickness of TPU hot melt adhesive film in different application scenarios is summarized. This method is simple and easy to implement, but may have certain limitations.
5. Summary
Choosing the appropriate TPU hot melt adhesive film thickness is the key to ensuring an excellent and worry-free process. During the selection process, it is necessary to comprehensively consider factors such as functional requirements, cost, and processing technology, and refer to various methods such as experimental methods, theoretical calculations, and empirical methods to determine the optimal thickness. At the same time, you also need to pay attention to issues such as maintaining cleanliness, controlling temperature, and paying attention to safety during use to ensure the best quality and performance of the product.
