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Uses of Hot Melt Adhesive


Hot melt technology is widely used in different industrial and manufacturing procedures. It can provide extreme adhesive power in assembling parts and sealing packages. Here are the different applications of hot melt technology.

1. Packaging - In packaging, the adhesive should not be that strong because it will be removed upon getting the product out of the package. You do not want to have the product sealed forever inside the box. However, the adhesive should be strong enough to keep the product inside the package in a perfectly safe and dry condition (especially if it is food).

There are specially designed industrial hot melt equipment for packaging. These equipments can be used for carton sealing, bag sealing, case sealing, tamper-proof closures, box making, tray making, etc.

2. Nonwovens - The use of nonwoven fabrics in clothing and other furnishings are widely embraced because of their strength and resilience. The hot melt technology has a part in achieving those properties of nonwoven fabrics.

Nonwovens are fabrics that are not knitted or woven. The fibers used in nonwoven fabrics are bonded with the application of heat and pressure. There are special resins, called binders, which are used in holding the fibers together. The most common fibers used in making nonwovens are cotton, rayon, polyester, wool, acetate and acrylic. And some binders used in nonwovens are acrylic, vinyl acrylic, vinyl acetate and styrenated acrylics.

3. Appliance assembly - Hot melt technology is starting to get the attention of appliance manufacturers because of its low cost without the strength getting compromised.

Specialized industrial equipment dispenses molten thermoplastic resins that are used as adhesives in assembling an appliance. The strength of the adhesive will be achieved upon the cooling of the pliable resin. This is a great time saver for manufacturers because it reduces the clamping time.

4. School projects, arts and crafts - The most basic application of this technology is the traditional consumer glue gun. It is the simplest adhesive dispenser that is readily available in households and schools.

The traditional adhesive used is the glue stick which may be cleared or colored. There are also novelty glue sticks like glittered sticks and glow-in-the-dark that are made specifically for artworks.

If it is the most basic, why do we have to mention it? As we all know, advanced technology always originates from the traditional practice. The traditional adhesive used are subjected to limitations. They tend to melt at high temperature and become brittle in low temperature, and thus, losing the strength of the bond. To address the temperature sensitivity of traditional adhesives, advanced adhesives are developed.

Also, there are still other applications of hot melt adhesives. It can be said that this is a versatile material that can meet nearly all your bonding needs in every field. It just depend on you to explore more uses.