Categories

Hot Melt Adhesive Granules

Advantages of hot melt glue granules

Compression

The correct compression ratio will prevent the compound from being spontaneously broken down or its integrity deteriorating for a long time if the compression is too low; or the substrates being deformed in such a way that the contact of the adhesive with the substrate is insufficient and the connection will be broken during compaction if the compression is too high.

Take Out

Sufficient compression at a sufficiently high temperature should ensure proper wetting of hard-to-reach surfaces, such as coated packaging materials with low surface energy.

Catch Time

The setting time of the hot melt glue should be equal to the application time. If the setting time is too short, the base will not get wet and gluing will not happen, or the gluing will soon stop. If too long, there will not be enough time for the molten material to lose heat and acquire sufficient strength to prevent the valves from being springy when exiting the pressing section.

Number of glue

An optimal amount of hot melt glue must be applied to ensure proper adhesion. Too much will result in longer peel-off time, increased flow rate, delamination, and squeezing when compressed, resulting in equipment contamination and unnecessary cleaning. If too little glue is applied, the opening time and setting speed will be reduced, and the properties of the glue to fill the gaps and, ultimately, glue will deteriorate.

Hot melt glue granule material

Polymers in hot melt glue granules

Polymers are considered the main components of hot melt glue. Polymers are different types of glue. These are repeated long chains of specific molecules that have different properties. Polymers are responsible for most of the physical properties inherent in hot melt adhesives. The polymers give the melt heat resistance, flexibility, strength, and shear and impact resistance. The above characteristics depend to a large extent on the type of polymer, molecular weight and amount. The high content of polymers in the melt means high viscosity. Viscosity is defined as an indicator of fluid density.

Resin in hot melt glue granules

The resins are responsible for the stickiness of the hot melt adhesive. Stickiness is defined as an indicator of adhesive stickiness, which is usually the period during which the glue remains unchanged after it is applied Sesenia. In addition, the resins control the wettability of the glue. This means that the resins control the period during which it remains liquid while the hot melt is in contact with the surface of the substrate.

Wax in hot melt glue granules

The opening time and setting speed of the hot melt adhesive are mainly controlled by wax. The break time is defined as the time it takes for gluing. When working with some pressure-sensitive hot melts, this time can range from a few seconds to a long time. The set speed allows you to determine how quickly a hot melt can form a compound of acceptable strength.

Antioxidants in hot melt glue granules

The main use of antioxidants in hot melt materials is to protect the material from destruction over time. Typically, aromatic amines, phenols, BHT, phosphites and phosphate compounds are used as antioxidants in hot melt materials. Antioxidants are added together with stabilizers in very small amounts. They do not affect the physical properties of the melt.

Frequently Asked Questions