Hot melt adhesive film and hot melt adhesive mesh film are hot melt adhesive products, and their principle of use is similar to that of hot melt adhesive bars. They are non-sticky at room temperature, but sticky on both sides at high temperature, and belong to environmental-friendly adhesives. There are two main types of hot melt adhesive films and hot melt adhesive mesh films according to their appearance, namely, those without release paper and those with release paper, and their usage methods are different. Taking the bonding of cloth as an example, this paper introduces the use method and operation steps of hot melt adhesive film (mesh film) without release paper and hot melt adhesive film (mesh film) with release paper respectively.

Introduction of hot melt adhesive film bonding process without substrate (without release paper)

The hot melt adhesive film and mesh film without release paper are relatively simple to use, just put the adhesive film or mesh film between the two materials that need to be bonded, and then use pressing equipment to heat and iron the cloth on the relatively thin side to bond the two fabrics together. Then wait for it to cool, and then you can test the peel strength. The ironing equipment that can be used includes: drum laminating machine, flat laminating machine, flat ironing machine or iron, among which industrial iron is the best choice, which is beneficial to temperature control. Remember not to turn on steam. Introduction of hot melt adhesive film bonding process with backing paper (with release paper)

The hot melt adhesive film and hot melt adhesive mesh film with release paper are relatively complicated to use, and there are many process steps, which require two operations to complete the bonding industry.

first bonding of hot melt adhesive mesh film

: it is necessary to align the adhesive side of the hot melt adhesive film and mesh film with the reverse side of the cloth to be bonded. Then use ironing equipment to heat and iron one side of the release paper, so that the heat is conducted to the middle glue layer to melt it and adhere to the lower cloth. After that, wait for it to cool and peel off the backing release paper, thus forming a semi-finished fabric material with adhesive backing.

second bonding: after that, align the semi-finished fabric with adhesive on the other side with the fabric to be bonded, and pay attention to that the adhesive layer needs to face the inner side of the fabric on the other side. Then, the ironing equipment is used to heat and iron the thinner side of the two fabrics, so that the heat is conducted to the middle glue layer for secondary melting, and the two fabrics are bonded together, that is, the operation is completed.

For the article on pressing temperature, time and pressure, please refer to How to Control the Pressing Temperature, Time and Pressure of Hot Melt Adhesive Film and Hot Melt Adhesive Mesh Film. The difference between hot melt adhesive film with and without backing paper

The reason why there is a difference between release paper and non-release paper is not only that the production process has created different products, but also that the use requirements and fields are different. I believe that friends who have an understanding of the above aspects should be able to. Here, I will briefly share with you their usage environment.

without release paper: the hot melt adhesive film or mesh film without release paper is more convenient for the whole material bonding, such as the bonding of two rolls of cloth, so there are many aspects to choose the hot melt adhesive film or mesh film without release paper. You can carry out the cooperation at one time, without having to operate for the second time, that is, it is efficient in terms of aspects.

substrate-free hot melt adhesive film

with release paper: the advantage of hot melt adhesive film and mesh film with release paper is that it can meet a wider range of use needs, such as setting and fitting needs. The use of the release paper can be used to carry out the setting and bonding cooperation in more aspects. When the pressing equipment presses the release paper on one side, the adhesive layer is not easy to shift, which has a good setting effect. Moreover, the product with release paper is also conducive to the cutting and re-bonding cooperation of products, such as the requirement of cutting the material and the adhesive film as a whole after the first bonding, and then bonding it with the other material. These are all impossible to complete with the adhesive film without release paper.

Therefore, the choice of the appearance of hot melt adhesive film depends on your product technology. Introduction of ironing equipment that can be used

Common ironing equipment includes flat laminating machine, roller laminating machine, flat ironing machine and iron. Among them, both the flat laminating machine and the roller laminating machine belong to large-scale professional equipment, which can carry out continuous operations in various aspects, such as the bonding of coiled materials and sheets and coiled materials. According to different equipment conditions and composite materials, the daily bonding amount can reach about 1-5 meters; The flat ironing machine is a semi-automatic ironing equipment, which completes the bonding cooperation by manually pressing up and down, and is mostly used for bonding small pieces of sheets, such as the bonding processing of clothing LOGO and trademarks. The iron is mostly used for temporary, small fitting or proofing, which is more common in garment factories. Because it is difficult to control the ironing time and pressure, it is not recommended to use the iron in batches.

drum hot melt adhesive film laminating machine