What are the advantages and disadvantages of hot melt glue sticks

Hot melt adhesive film is a derivative product of hot melt adhesive, and their raw materials are the same. 1. What is hot melt adhesive Hot melt adhesive is a polymer material, which is a kind of adhesive that has no viscosity at room temperature, but has viscosity at high temperature, because it does not contain solvents, it is a kind of environmentally friendly adhesive, which is more professional and detailed in Du Niang. 2. What is hot melt adhesive film Hot melt adhesive film is made by melting hot melt adhesive particles, through scraping, coating and blow molding processes by using professional equipment, and its raw material is hot melt adhesive, therefore, hot melt adhesive film is one of the derivative products of hot melt adhesive, and its principle is similar to other hot melt adhesive products (hot melt glue sticks, hot melt adhesive particles).

Third, the advantages of hot melt adhesive film and the reason why there is a hot melt adhesive film is because the hot melt adhesive film is more square to use...

Advantages: 1. The hot melt glue stick has fast bonding speed, easy to continue, automated, high-speed operation, and low cost 2, no solvent pollution, no combustion 3, no drying process is required, and the bonding process is simple 4, the product itself is solid for easy packaging, transportation, storage, small footprint, convenient storage 5, good bonding strength, flexibility 6, a wide range of bondable objects, that is, bonding and sealing 7, good gloss and gloss retention, good shielding Disadvantages of hot melt glue stick 1, there are limitations in performance, and the heat resistance is not enough, The bonding strength is not high, the chemical resistance is poor 2, and it needs to be equipped with special hot melt equipment for construction, such as hot melt glue machine, hot melt glue gun, 3, and it will be affected by the climate and season in bonding.

None of them are strong. PUR hot melt adhesive is one of them, which is a structural glue used in the electronics industry, suitable for electronic applications where adhesion is required.

PUR hot melt adhesives are available in the following selection criteria:

1.Glue color requirements. There are black, white, and transparent colors, and you can also add other colors of toner to modulate.

2.Flexibility requirements of the glue. Different formulations of PUR hot melt adhesives, some are more hard and brittle, and some are more flexible.

This is due to differences in the raw materials themselves, as well as differences in additives. PUR hot melt adhesive selling chain key is required to use modified raw materials, so that the colloid is soft and tough, can adapt to the vibration of electronic products in different environments, and is not easy to fall off and break.

3.Adhesion requirements for glue. PUR hot melt adhesives produced from different raw materials have large differences in adhesion to substrates. It is required that the glue can be firmly adhered to the surface of ABS, PC, stainless steel, aluminum, etc., to form a reliable medium.

4.Glue high temperature resistance requirements. In the automotive industry, it is required to be able to withstand a temperature of 90 120, which requires the glue to be able to maintain the original firmness without softening and deformation in this temperature range, without degumming, and to be able to resist the deformation of the product caused by this temperature.

The application method of PUR hot melt adhesive is as follows:1The ENIENT EG2806 is used in scenarios that require high temperature resistance and is preheated in a dispensing system at 100 120 degrees Celsius for 20 minutes before use.

2.ENIENT EG2807 is used in scenarios that require structuring and is preheated at 100 120 degrees Celsius in the dispensing system for 20 minutes before use.

1. Look at the stickiness.

There are very few high-quality hot melt sticks made of petroleum resin on the market. Instead, it is improved rosin resin to make hot melt glue sticks, which reduces the cost and can also achieve the effect of stickiness, so now the best ones on the market are generally made of rosin resin. There is no unified standard in the hot melt adhesive industry, and the viscosity of products on the market is uneven, and it is difficult to distinguish the quality of its viscosity with the naked eye.

2. Look at the rebound.

The quickest and most effective way is to break it by hand, bend the hot melt glue stick, and then let go of the side, and observe the rebound of the hot melt glue stick. It's easy to see how good the hot melt stick is.

3. Look at the quality.

The quality of the hot melt glue stick itself directly determines its performance, but the improper storage of the hot melt glue stick can easily lead to the poor quality of the hot melt glue stick, non-sticking and other phenomena.

The hot melt adhesives used by hand are generally required to be transparent and free of glue marks. The hot melt adhesive strips are non-polluting and non-toxic, and of course they cannot be eaten. It is recommended that you try Shanghai Zhengtai's 805SA, the softening degree and softening point are very good. It's transparent, and there's no trace of it when it's roasted over fire, which I've tried.

Hot melt adhesive is generally non-toxic, and we will not swallow it, there will be odor during use, this is inevitable, as for the color and whether it is toxic or not is not directly related, it is determined by the formula and raw materials. The hard ones are suitable for summer use, and the soft ones are suitable for winter use. If it is roasted in a fire, harmful substances may be generated.

Glue guns won't.

According to the formula ratio of hot melt glue stick, the raw materials are weighed and added to the reaction kettle. Heat it up to melt and stir well. Then the melted rubber in the reaction kettle is cooled to a certain temperature and put into the running extruder, and the extrusion speed of the extruder can be selected according to the different rubber types.

The extruder squeezes the hot melt adhesive into the water tank through a trapped extrusion hole on the extrusion head, the hot melt adhesive is immediately shaped when it encounters the cooling water, the glue rod is preliminarily cooled and shaped through the first cooling water tank, and the second cooling water tank is entered through the traction of the traction machine, and the glue sample is fully cooled in the second cooling water tank.

Look at the tar content, the nicotine content of the flue gas, the carbon monoxide content, the lower these contents, the better, but you can't compare the mixed type with the flue-cured tobacco type, the mixed type is definitely lower than the flue-cured tobacco type, but the mixed type is not easy to smoke, and the old dry tobacco is the same as the old dry tobacco Then some large manufacturers specially launched some high-end cigarettes For high-end customer groups, high-grade cigarettes are made of high-quality tobacco The cost is relatively high, and the selection of tobacco is similar to the selection of tea I hope you can understand.

It's okay, you can try it.

The hot melt glue stick is made of ethylene-vinyl acetate copolymer. The hot-melt glue stick is white and opaque, and has the characteristics of fast bonding, high strength, aging resistance, non-toxicity, strong thermal stability, and adhesive film toughness. The shape is rod and granular, which can be used for wood, plastic, fiber, fabric, metal, furniture, lampshade, leather, handicrafts, electronic toys, electrical components, paper products, ceramics, pearl cotton packaging and other interadhesive solids, which can be widely used by factories and families.

Operation method: use the hot melt glue stick with the glue gun, use the hot melt glue gun to glue, put the glue stick into the hot melt gun, plug in the electric heating for a while, and the glue will flow out of the muzzle when the trigger is pulled. You can also directly use a lighter to burn one end of the hot melt glue stick, apply it to the place to be sticked, and wait for the glue to become solid.

Bonding paper cartons, handicrafts, handmade, etc., is convenient and easy to use, and is stronger than general glue.

Advantages: 1. The hot melt glue stick has fast bonding speed, easy to continue, automated, high-speed operation, and low cost 2, no solvent pollution, no combustion 3, no drying process is required, and the bonding process is simple 4, the product itself is solid for easy packaging, transportation, storage, small footprint, convenient storage 5, good bonding strength, flexibility 6, a wide range of bondable objects, that is, bonding and sealing 7, good gloss and gloss retention, good shielding Disadvantages of hot melt glue stick 1, there are limitations in performance, and the heat resistance is not enough, The bonding strength is not high, the chemical resistance is poor 2, and it needs to be equipped with special hot melt equipment for construction, such as hot melt glue machine, hot melt glue gun, 3, and it will be affected by the climate and season in bonding.