Yes, sponge material can be bonded with TPU (thermoplastic polyurethane) hot melt adhesive. TPU hot melt adhesive is a popular choice for bonding a variety of materials, including porous substrates like sponge.
When bonding sponge with TPU hot melt adhesive, it’s important to choose the right type of adhesive film that is specifically designed for this application. The adhesive film should have good adhesion to the sponge material and be able to penetrate its porous structure for a strong and durable bond.
Here are some tips for bonding sponge with TPU hot melt adhesive:
- Clean the sponge surface: Before applying the adhesive film, it’s important to clean the sponge surface to remove any dirt, dust, or debris that may interfere with bonding. A clean surface will also help the adhesive film to adhere better and form a strong bond.
- Use the right temperature and pressure: TPU hot melt adhesive film requires a certain temperature and pressure to bond effectively. It’s important to follow the manufacturer’s instructions for the specific adhesive film being used, and to ensure that the temperature and pressure settings on the bonding equipment are appropriate for bonding sponge.
- Allow sufficient curing time: TPU hot melt adhesive film requires a certain amount of time to cure and reach its full strength. It’s important to allow sufficient curing time before handling or using the bonded materials to ensure that the bond is strong and durable.
- Test the bond strength: Once the bond has cured, it’s important to test its strength to ensure that it is suitable for the specific application. This can be done by applying pressure or pulling on the bonded materials to check for any signs of delamination or separation.
With the right adhesive film and proper bonding techniques, sponge material can be effectively bonded with TPU hot melt adhesive for a strong and durable bond. And we recommend for the strong adhesion, the adhesive materials’ thickness should be at least Half the thickness as the materials.