In the garment printing, textile, packaging, and many other industries, green and environmental protection has become an important trend of development. Today, we will introduce an emerging environmentally friendly material - hot melt powder, which is gradually becoming a new choice in the industry with its excellent performance and environmental characteristics.
What is hot melt powder?
Hot melt powder is mainly a powder material formed by physical or chemical changes under heating and pressure from high molecular materials. It has the following characteristics:
· High elasticity and viscosity transition: At room temperature, hot melt powder is in a high elasticity state, and after heating and melting, it transforms into a viscous flow state with fast curing speed.
· Water wash fastness: With mild bonding conditions, excellent water wash fastness (up to 60°C water temperature washing) and dry cleaning fastness can be obtained.
· Soft hand feel and good resilience: Brings comfortable hand feel and good resilience to the product.
· Good chemical stability: Can be stored for a long time at room temperature without deterioration.
· Green and environmentally friendly: Harmless to the human body, it is a green and environmentally friendly product.
Coarseness of hot melt powder
The coarseness of hot melt powder refers to the particle size. According to the particle size, hot melt powder can be divided into:
· Coarse powder: The particle diameter is greater than 300 microns, the specific surface area is small, the particle loading capacity is high, but the fluidity is poor, suitable for injection molding and other applications requiring rapid bonding.
· Medium powder: The particle diameter is between 100 to 300 microns, the specific surface area is moderate, the fluidity is good, suitable for various printing processes.
· Fine powder: The particle diameter is less than 100 microns, the specific surface area is large, the fluidity is good, and the particle loading capacity is low, suitable for applications that require delicate texture such as coatings and slurry.
How to use hot melt powder
The use of hot melt powder is very simple. Just mix it with ink evenly, then print the pattern on the fabric through screen printing or slurry printing, and finally cure it by heating.
Application fields of hot melt powder
The application scope of hot melt powder is very extensive, including:
· Garment hot stamping process: Used as one of the consumables for flock transfer and film sugar transfer and other processes.
· Textile industry: Used for collar, cuff, non-iron shirt and so on, with the characteristics of non-toxic, odorless, and no solvent volatilization.
· Packaging industry: Used for cardboard bonding and fabric bonding.
· Electronics and automotive industry: Used for cable coating, furniture splicing, coating, and sealing.
· Home decoration industry: Used for manufacturing sound insulation, waterproof, and thermal insulation materials.
· Others: Embroidery, pad, aluminum foil composite fiberglass cloth, wood-plastic composite and other fields.
How to choose hot melt powder
Choosing the right coarseness of hot melt powder needs to consider the following factors:
· Production process: Choose the appropriate coarseness of hot melt powder according to different production processes, for example, fine powder is needed for injection molding, and coarse powder is needed for hot melt adhesive products.
· Application field: Different fields have different requirements for hot melt powder, for example, fine powder is needed for the coating industry, and coarse powder is needed for 3D printing industry.
Summary
As a kind of adhesive with excellent performance and environmental protection, hot melt powder has a wide range of applications in various industries. Choosing the right coarseness of hot melt powder can help you achieve better bonding effect and product quality. I hope this article can help you better understand hot melt powder and provide some references for your production application.
