The adhesive known as "hot melt" is a type of plastic adhesive. Within a certain temperature range, there is a change in its physical state in response to the temperature, but the chemical properties of the substance do not alter. It does not have any flavor, is safe to consume, polyester hot-melt adhesive web and is a chemical product that is good for the environment. Because the product itself is solid, simple to pack, transport, and store, as well as solvent-free, non-polluting, and non-toxic; and because it has the advantages of a simple production process, high added value, strong bonding strength, and fast speed.
Hot melt gluePeople almost universally have the impression that thicker glue is superior to thinner glue. Some people believe that if something is as thin as water, then it will not adhere to anything at all. Is it possible that this viewpoint is accurate?And does the viscosity of the hot melt adhesive have a direct bearing on the consistency of the adhesive?.
For the purpose of testing, we procured a wide variety of different brands of hot melt adhesives from the market. These hot melt adhesives are melted into liquid glue when subjected to the action of heating at a high temperature; however, their thin consistency is very different from that of liquid glue. In order to compare the adhesive properties of different glues, we will apply them to the same material. The application environment of each glue, as well as the bonding materials, are standardized in order to ensure that the results of the tests can be reliably referenced. The only exception to this standardization is for hot-melt adhesives.
After conducting a number of experiments and checking the accuracy of various instruments, the following conclusion was reached: when considering hot melt adhesive as a single entity, the thinness of the adhesive has no direct relationship with its viscosity. The viscosity of the hot melt adhesive can remain the same regardless of how thin the adhesive is; however, the pes hot melt double sided adhesive lining adhesive effect that is displayed in the actual application does not fully represent the true viscosity performance of the adhesive.
The performance of hot melt adhesives is measured by their viscosity as well as their thinness. There is a reference value for determining whether or not various adhesive applications are applicable. The nature of their connection can only be understood by examining the raw material ingredients that go into making hot melt adhesives. It is possible that a change in the proportion of a particular ingredient will result in a change in the physical value of viscosity and thinness; however, this factor cannot explain the problem on its own.
They are merely individuals within the parameters of hot melt adhesives, and the comparison of parameters is the only way to discover the true value of each individual parameter. In the absence of any real-world relevance, the parameters are nothing more than a collection of numbers. Don't be concerned about how the viscosity of hot melt adhesive relates to its consistency; this is completely unimportant. In the event that you experience difficulties in bonding, the most important thing for you to do is to identify the issue as quickly as you can. To reiterate, very thin glue has the potential to be extremely sticky, whereas very thick glue might not stick very well.
When working with hot melt adhesives, it is almost certain that misunderstandings will crop up at some point. How can this problem be fixed?.
The product known as hot melt adhesive has both a shape and a stick to it. Because we typically use it when bonding objects, and because the operation is fairly simple and straightforward, the vast majority of people will have some level of familiarity with this hot melt stick. During the course of the process, there will invariably be some instances of misunderstanding. Let's take a more in-depth look at eva web adhesive some of the common misunderstandings that exist.
Misunderstanding1. While in use or being constructed, hot melt adhesives can produce some odors that are disagreeable and acidic. These odors are toxic and hazardous to human health; consequently, they cannot be used in any capacity that involves prolonged contact or construction work. Explanation that is correct:During the construction process, some acidic odors may be emitted from hot melt adhesives; however, these odors are not harmful because the primary components of hot melt adhesives are EVA resin, thickeners, and antioxidants. Because of this, it will give off an odor during the construction process; however, it is not toxic and will not have any impact on human health. This is a very secure and risk-free adhesive.
Misunderstanding number two: hot melt adhesives can only be used for bonding fibers, paper, plastics, and wood; they cannot be used for bonding metals, ceramic tiles, electrical appliances, or electronic devices. The correct explanation is that hot melt adhesive is a type of glue stick that can be used in industry as well as in the home. It is particularly useful in industrial manufacturing because it can still maintain good bonding performance and the construction process is simplified as a result. Because of its size, its resistance to falling off, and its transparent color, this product is ideal for the routine maintenance and repair of electrical appliances and electronic devices.
Misunderstanding number three Because the hot melt adhesive must be used with a glue gun, any unused adhesive strips must be removed from the glue gun at the appropriate time during use and then reinserted before the next use. If this is not done, the surrounding temperature will be too high, and the adhesive will easily melt. Explanation that is correct:The use of a glue gun is required whenever hot melt glue is being applied. Pull the trigger on the glue gun to extrude the melted glue after you have first inserted the glue strip into the gun, plugged it into the power supply, and allowed it to preheat for three to five minutes. Because the melting point of hot melt adhesive is 85 degrees, there is no need to worry about it melting, and it is not necessary to remove the adhesive strips that were used in the operation and construction; instead, they can be used directly the next time. This is because it is not necessary to remove the adhesive strips that were used in the operation and construction.
The traditional solvent adhesives are being phased out gradually and being replaced by hot-melt adhesive, which is an environmentally friendly adhesive with excellent performance, high safety and reliability standards. The scope of applications used further downstream is consistently growing. In my nation, the market for hot melt adhesives that are used in downstream applications is the packaging market. This market accounts for the largest proportion. As a result of an increase in consumption level as well as a shift in the concept of consumption, residents of China are paying an increasing amount of attention to the quality of the packaging of various goods, including food, beverages, and other products. As a result, the demand for hot melt adhesives in the field of packaging is continuing to rise.
What kinds of specific uses are there for hot-melt adhesives in the packaging industry?Sticking of straws: such as milk, tea beverages and other paper packages are attached to the straws, the curing time of the hot melt adhesive is required to match the speed of sticking the tubes, and the high and low temperature resistance of the hot melt adhesives is matched with the existing environment of the product; carton sealing: such as Packaging candy, biscuits, frozen food, ice cream cartons, snack food, etc. , automatic packaging production; PET transparent box sealing: such as Packaging candy, biscuits, frozen food,.