Frequently asked questions
FAQ: Questions about synthetic leather and PU
Which is more breathable, leather or synthetic?
Leather is more breathable when it has less coating (pigmentation). Aniline leathers with a natural look and grain whose pores are exposed are more breathable than conventional homogeneous leathers that are protected and embossed, which could be compared to polyurethane (synthetic leather) in this respect, and which in turn retain greater breathability than PVC (polyvinyl chloride).
Is leather delicate?
In principle, less than fabric, as use gives it a nice aging effect, which is particularly appreciated in aniline leathers; fabric does not age over time, it simply gets damaged.
Is thick leather better?
Original leathers are neither thick nor thin; it is the result of the cross-cut of the grain (outer layer, upholstery) and the split (inner layer, leather goods) that gives the thickness we appreciate and which depends exclusively on the final appearance we want to give to the tanned leather (more pronounced grain, hardness, flexibility, etc.).
What is the original color of leather?
Leather does not have a defined color before it is tanned, and it is during the tanning process that it is dyed the required color (the natural color is a fantasy).
Is it more environmentally friendly to use leather than synthetics?
In both the leather and synthetic manufacturing processes, industries can adopt systems that are more or less environmentally friendly. As for natural leather, its use is a way of making the most of animal resources.
Is polyurethane biodegradable?
Yes, unlike PVC (polyvinyl chloride), polyurethane is biodegradable, and this virtue is also one of the technical parameters that must be analyzed when choosing the different degrees of resistance to polyurethane degradation (hydrolysis), which is measured in weeks of resistance to the “Jungle Test,” with each week corresponding to one year of use in adverse conditions.
Can I use polyurethane synthetic leather for outdoor use?
No, since polyurethane is biodegradable, it is not ideal for outdoor use, as hydrolysis causes it to deteriorate quickly. Polyvinyl chloride (PVC), properly treated to resist sunlight, is a perfect choice for outdoor use, as its imperishable nature and high strength make it the perfect product for extreme installations.
Is PVC waterproof?
Yes, because the compact layer on the surface must be thick and heavy to ensure good abrasion resistance, making it an ideal product for covering furniture exposed to water.
Is PVC toxic?
No, polyvinyl chloride is currently manufactured free of heavy metals and is non-toxic in use.
What flame retardant standard must coatings comply with?
Currently in Europe, the UNE 1021 parts 1 and 2 standard is mandatory for use in communities and projects that must comply with the CTE (technical building code). Since 2006, the old MI, M2, and other standards have been canceled in Spain and the new standard has been adopted. This standard is largely based on the fabric’s ability to prevent fire from entering the interior of the covering. It is not at all, as many people think, an extinction test in which the fabric does not ignite in a vertical position (curtains). In France, Germany, Italy, and England, the old standard is still used in each country, which generates high approval costs for each product. The nautical, automotive, aeronautical, railway, and transport sectors have specific regulations.
What is stain resistance?
Stain-resistant treatment is a fluorinated resin that prevents stains and is used on fabrics by different brands. In no case does it guarantee impermeability or prevent stains 100%. There are very resistant treatments that even prevent ink and pen stains from adhering to the fabric, such as our “Splash Nanotech” finish.