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Grading of TPU and its advantages
Thermoplastic polyurethane elastomer English abbreviation TPU, is a functional group of diphenylmethane diisocyanate and macromolecule polyol, chain extender common reaction polymerization of polymer materials.
2017-08-30
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Thermoplastic polyurethane elastomer English abbreviation TPU, is a functional group of diphenylmethane diisocyanate and macromolecule polyol, chain extender common reaction polymerization of polymer materials. Its molecular structure is composed of diphenylmethane diisocyanate and chain extender obtained by the rigid block and diphenylmethane diisocyanate MDI and macromolecule polyol reaction of the flexible segment composed of alternating. Engineers through different raw material applications and the proportion of adjustment, the elastomer can have excellent resilience and physical properties, coupled with a variety of mechanical strength are very excellent in recent years in the pipe, cable, conveyor belt industry, elastomers gradually replace the PVC industry application.

TPU rolling leather that is through the rolling production process leather:

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TPU calendering leather hierarchy For TPU calendering leather should have the following definition:

1, leather in the overall production process does not endanger the environment, not the environmental pollution burden.

2, leather in the production process non-toxic and tasteless, and in the terminal application can not cause harm to the human body.

3, leather with biodegradable nature, and decomposition does not pollute the environment.


The use of rolling grade TPU material production of rolling environmental protection leather has the following advantages:

1, Environmentally friendly materials: TPU are biodegradable, will not be the environment of new pollution, colorless, non-toxic, odorless environmentally friendly materials, plasticizer, heavy metal material.

2, The high pass rate: the use of rolling grade TPU material production of leather, no VOC (volatile organic compounds) emissions, the production process does not use any organic solvents and plasticizers, the resulting TPU environmentally friendly synthetic leather no organic solvent residue (DMF, Toluene, butanone), the production process of environmental protection, the resulting waste water, waste, waste less (recyclable), and for the production line operators are not harmful.

3, The physical properties of products and wear-resistant, scratch-resistant performance is better than the existing PVC artificial leather.

TPU rolling leather products are widely used, such as luggage, shoe materials, wall decoration, sofa, car interiors and so on. Can replace the traditional PVC artificial leather and PU synthetic leather related applications.

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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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