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Hot melt film
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A Brief Introduction to the Thickness of TPU Hot Melt Adhesive Film
​TPU Hot Melt Adhesive Film can be classified according to whether it has a base material or not. It is mainly divided into three types: adhesive film with release paper, adhesive film with release film and light film. Whether or not there is a base material will not affect the use of the film, but it will affect the way of use. For example, the film without a base material is usually suitable for one-time compound molding products, while the film with a base material is usually used for products that require secondary compounding.
2023-07-20
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A Brief Introduction to the Thickness of TPU Hot Melt Adhesive Film

    TPU Hot Melt Adhesive Film can be classified according to whether it has a base material or not. It is mainly divided into three types: adhesive film with release paper, adhesive film with release film and light film. Whether or not there is a base material will not affect the use of the film, but it will affect the way of use. For example, the film without a base material is usually suitable for one-time compound molding products, while the film with a base material is usually used for products that require secondary compounding.

    TPU Hot Melt Adhesive Film is a film-like adhesive product that looks like a plastic film, but many people confuse it with a plastic film. The thickness of TPU Hot Melt Adhesive Film is usually between 0.02mm and 3mm. In the TPU Hot Melt Adhesive Film industry, 0.01mm is called a wire, and 0.15mm is equivalent to 15 wires, among which TPU Hot Melt Adhesive Films with more than 15 wires are considered thicker adhesive films.

    Although the TPU Hot Melt Adhesive Film is very thin, sometimes even thinner than paper, but we don't have to worry about how to measure its thickness. Because the hot melt adhesive film has a special measuring tool called a thickness gauge. A thickness gauge is an instrument suitable for measuring the thickness of extremely thin products.

    In the production process of TPU Hot Melt Adhesive Film, an instrument that can monitor the thickness in real time is usually used. If the degree of automation is low, thickness gauges can also be used for online measurement and adjustment. Once thickness adjustments are made, production is usually carried out at the same thickness with appropriate spot checks for quality control.

    TPU Hot Melt Adhesive Film material has the characteristics of cold resistance and softness, and is very suitable for fabric bonding and integration in the clothing industry. It is soft to the touch, without irritation and foreign body sensation.

    If you want to know more about TPU Hot Melt Adhesive Film, please continue to pay attention to the official website https://www.tpu-film.com.cn/cn/index.html of Dongguan GreenTPU Environmental Protection New Material Co., Ltd.

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TPU hot melt adhesive film vs anaerobic adhesive: "Scene flexibility" difference in automotive interior bonding
2025-09-11
​From the perspective of curing conditions, TPU hot melt adhesive film does not need to rely on special environments, while anaerobic adhesives are severely restricted by "auerobicity". The curing principle of anaerobic glue is to undergo polymerization under conditions of lack of oxygen and catalyzed by metal ions (such as iron and copper). If it is in an environment where air circulation or metal substrates are not available, the curing speed will be greatly slowed down or even unable to cure. In automotive interiors, most bonding scenarios are "open" (such as bonding the door panel skin to PP substrate, and the ceiling fabric to the sponge), the air can freely contact the bonding surface, and the substrate is mostly non-metallic (PP, ABS, fabric, etc.), lacking metal ion catalysis, and additional catalyst is required when using anaerobic glue, and the curing time is as long as several hours, which is difficult to meet the needs of industrial production. The TPU hot melt adhesive film only needs to be melted by heating (120-160℃) and can be cured after pressurization and cooling. It does not need to rely on the ambient oxygen concentration or the base material. It can be cured stably in open or closed bonding scenarios, and the curing time only takes a few dozen seconds to a few minutes, adapting to the fast-paced needs of the interior production line.
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