As a new type of adhesive, hot melt adhesive film has attracted more and more attention due to its excellent bonding performance and wide application fields. Common types of hot melt adhesive films on the market mainly include PA hot melt adhesive film and PO hot melt adhesive film. Although these two hot melt adhesive films have many similarities in application, there are significant differences in their raw materials, performance, price and applicable fields. This article will introduce in detail the difference between PA and PO hot melt adhesive film.
1. Ingredient Differences
- PA hot melt adhesive film: The main component of PA hot melt adhesive film is polyamide, which is a high molecular polymer containing hydrogen atoms that can combine with the hydrogen atoms of the adhesive to form hydrogen bonds. This enables the PA hot melt adhesive film to form a stable bond with materials such as cloth and leather.
- PO hot melt adhesive film: The main component of PO hot melt adhesive film is polyolefin, usually including polyethylene (PE) and polypropylene (PP). Polyethylene is non-toxic and odorless, and can copolymerize with other acids to produce polarization, thereby improving bonding performance.
2. Performance Differences
- PA hot melt adhesive film: PA hot melt adhesive film has excellent dry cleaning resistance, low temperature resistance, high thermal stability, can withstand the erosion of a variety of reagents, and has good chemical resistance. This makes it ideal for use in areas where high-strength bonds are required, such as in the high-end clothing, automotive and furniture industries.
- PO hot melt adhesive film: The melting point of PO hot melt adhesive film ranges from 95-105℃, and the operating temperature is generally between 115-130℃. It has good water washability but poor elasticity and is resistant to acid and alkali corrosion. PO hot melt adhesive film is more suitable for applications that require conventional bonding strength and lower temperature requirements.
3. Cost Difference
- PA hot melt adhesive film: Since the price of the raw material polyamide of PA hot melt adhesive film is relatively high, its production cost is also relatively expensive. Therefore, the price of PA hot melt adhesive film in the market is generally higher and is usually used in occasions with higher requirements. In recent years, with the popularity of TPU hot melt adhesive film, the market share of PA hot melt adhesive film has declined.
- PO hot melt adhesive film: The raw material cost of PO hot melt adhesive film is low, so its production cost is relatively low. With its price advantage, PO hot melt adhesive film occupies a large share in the market, especially in applications in the clothing industry, such as embroidery and trademark bonding.
4. Differences in usage
- PA hot melt adhesive film: PA hot melt adhesive film is suitable for bonding a variety of materials, including leather, textiles (such as trademark adhesive, embroidery badges), plastics, metals, etc. It has a wide range of applications and is particularly suitable for use in industries such as clothing, automobiles, furniture and building materials.
- PO hot melt adhesive film: PO hot melt adhesive film is mainly used in more common textiles, such as denim, non-woven fabrics, etc. In addition, it is also widely used in the bonding of TPV and EPTM materials in the automotive industry, and the bonding of aluminum and copper metals in the electronics field. Especially in the assembly of electronic components, PO hot melt adhesive film is used to bond metal components such as batteries.
5. Conclusion
PA hot melt adhesive film and PO hot melt adhesive film each have different characteristics and advantages. PA hot melt adhesive film is suitable for high-end industries and high-demand application scenarios due to its excellent bonding performance and chemical resistance, while PO hot melt adhesive film has become a popular choice in many industries due to its low cost and wide applicability. It is a common adhesive material in the automotive, electronics and apparel industries.
If you need further information about hot melt adhesive film products, please feel free to contact Alster’s sales staff. We will provide you with professional services and help you choose the most suitable hot melt adhesive film products to ensure that your production needs are met.
