ALCANTARA® Multilayer für Lenkrad imperial blue

What is meant by abrasion cycles (Martindale test) in genuine leather, synthetic leather, and fabrics?

Abrasion cycles indicate how many rubbing movements (cycles) a material can withstand before showing visible wear or breakdown. This value is crucial for assessing abrasion resistance, especially in heavily used applications like upholstery, car seats, or clothing. The higher the number of cycles, the more durable the material.

In genuine leather:
· Abrasion resistance varies depending on the finish and surface treatment.
· High-quality upholstery leather often withstands 10,000 to over 50,000 cycles.
· The natural grain and type of finish heavily influence results.

Relevant standards:
- DIN EN ISO 17076-1 – Determination of abrasion resistance of leather (Martindale method)
- ISO 5470-1 – Abrasion test using Taber Abraser (less common for leather)

In synthetic leather:
· Durability depends on the PU or PVC coating quality and the backing material.
· Premium synthetic leather can achieve up to 100,000 abrasion cycles or more.
· Lower-quality versions may crack or peel prematurely.

Relevant standards:
- ISO 12947-2 – Determination of abrasion resistance of coated textiles (Martindale)
- ISO 5470-1 – Abrasion test using Taber Abraser

In fabrics (textiles):
· Abrasion resistance depends on the fiber type, weave, and finishing.
· Standard upholstery fabrics: approx. 15,000–30,000 cycles
· Contract or outdoor fabrics: up to and beyond 100,000 cycles

Relevant standards:
- ISO 12947-2 – Martindale method for determining abrasion resistance
- DIN EN ISO 12947-1 to -4 – cover test setup, procedure, and evaluation

Conclusion:
Abrasion cycles (Martindale test) are a reliable measure of how well a material resists wear from friction. Especially in automotive, furniture, and textile sectors, high resistance ensures longer durability. Key testing standards include DIN EN ISO 17076, ISO 12947, and ISO 5470.

What are allergenic dyes in genuine leather, synthetic leather, and fabrics?

Allergenic dyes are chemical coloring agents that can trigger allergic reactions in sensitive individuals, usually through skin contact. These dyes are used in textile and leather processing to color materials. Some of these substances are considered harmful to health and are therefore regulated or banned by law, especially in products that come into direct contact with the skin.

In genuine leather
Certain azo dyes or chromium-based dyes used in leather production are known allergens.

- Chromium VI, which can form during improper tanning processes, is particularly sensitizing and strictly monitored.
- High-quality leather should be chromium-free or treated with tested, low-allergen dyes.
- Leather certified by OEKO-TEX® or similar environmental/health standards is usually free from allergenic substances.

In synthetic leather
Synthetic leather is typically dyed using synthetic pigments and PU or PVC coatings.
These coatings can contain problematic dyes, especially in low-grade products.
High-quality synthetic leather sold in the EU is subject to the REACH regulation and is generally free from banned azo dyes.
Caution is advised with imported goods from non-EU countries without certification.

In fabrics (textiles)
In textiles, allergenic dyes are especially critical since they often come into direct contact with the skin (e.g., clothing, bedding).
Azo dyes, disperse dyes, and reactive dyes are particularly known for causing contact allergies.
Many of these substances are banned or heavily restricted in Europe—especially for baby or skin-contact products.

- Textiles certified by OEKO-TEX® or GOTS are generally considered safe.

Conclusion:
Allergenic dyes can be found in genuine leather, synthetic leather, and textiles when unregulated dyeing processes are used. For health-conscious or sensitive individuals, it is recommended to purchase certified, toxin-tested materials, especially for products that come into direct contact with the skin.

What is meant by light fastness in genuine leather, synthetic leather, and fabrics?

Light fastness refers to a material’s ability to retain its color and surface properties when exposed to prolonged natural or artificial light (especially UV radiation). It is a key quality factor for materials exposed to sunlight over time, such as furniture upholstery, car seats, or outdoor textiles.

In genuine leather
· Genuine leather can fade or discolor under intense light exposure—depending on the quality of the dye and surface treatment.
· Fully dyed leather with lightfast pigments has higher light fastness.
· This is particularly important in the automotive and furniture sectors for maintaining long-term appearance.

Relevant testing standards:
· DIN EN ISO 105-B02 (Determination of light fastness of leather)
· DIN EN ISO 105-B06 (Combined assessment of light and heat exposure – heat and light fastness)

In synthetic leather
· Synthetic leather reacts differently to UV radiation depending on its base (PU, PVC).
· High-quality PU synthetic leather with UV-stabilized treatments shows better light fastness than basic PVC materials.
· Poor light fastness may cause discoloration, brittleness, or surface degradation.

Relevant testing standards:
· DIN EN ISO 105-B02
· ISO 4892-2 (Artificial weathering with xenon arc light)

In fabrics (textiles)
· Textiles made of synthetic fibers (e.g., polyester, acrylic) are generally more light-resistant than natural fibers like cotton or linen.
· Color fastness is crucial for curtains, upholstery, sun protection, or outdoor clothing.
· Even dyed fabrics may darken or fade under light exposure.

Relevant testing standards:
· DIN EN ISO 105-B02
· ISO 105-B04 (For outdoor applications with xenon arc light)
· ISO 4892-2 (Artificial light aging)

Conclusion:
Light fastness is an essential material property for all applications where products are exposed to sunlight or artificial light. It helps preserve the color and surface integrity of materials over time. The most important standards for evaluating light fastness include DIN EN ISO 105-B02, B06, B04, and ISO 4892-2.

What is rub fastness in genuine leather, synthetic leather, and fabrics?

Rub fastness refers to the resistance of a dyed or coated material to mechanical friction. It indicates how much color or coating rubs off or transfers to other materials under dry or wet conditions. This property is especially important for furniture, clothing, or automotive interiors.

In genuine leather
· Rub fastness is critical for maintaining color and finish on the leather surface.
· Pigmented leathers may show color transfer if rub fastness is low.
· Testing is done under both dry and wet conditions.

Relevant standard:
· DIN EN ISO 11640 – Leather – Determination of color fastness to rubbing

In synthetic leather
· For PU or PVC-coated synthetic leather, pigment adhesion to the surface is key.
· Poor rub fastness leads to visible abrasion or color transfer.
· Crucial in high-use areas like seating or steering wheels.

Relevant standards:
· DIN EN ISO 105-X12 – Textiles – Determination of color fastness to rubbing
· DIN EN ISO 11640 – also applicable to coated materials

In fabrics (textiles)
· Rub fastness is an essential quality for garments, curtains, seat covers, etc.
· Dark, highly saturated fabrics often have lower rub fastness.
· Dry and wet rub fastness may differ significantly.

Relevant standard:
· DIN EN ISO 105-X12 – Standard method for assessing color fastness to rubbing

Conclusion:
Rub fastness is crucial for the appearance, functionality, and usability of leather, synthetic leather, and fabrics. It ensures that colors do not transfer onto clothing or surrounding surfaces. The key test standards are DIN EN ISO 11640 for leather and DIN EN ISO 105-X12 for synthetic leather and textiles.

What is tear resistance and its impact in genuine leather, synthetic leather, and fabrics?

Tear resistance refers to a material’s ability to resist further tearing once a cut or split has occurred. This property is especially important in products subject to regular mechanical stress, such as upholstery, car seats, bags, or workwear.

In genuine leather:
- Leather's fibrous structure provides natural tear resistance, which varies depending on the animal type, tanning method, and leather thickness.
- High-quality leather, especially vegetable- or chrome-tanned, shows excellent resistance to further tearing.
- Factors like grain structure and evenness of thickness influence tear resistance.


Relevant standards:
· DIN EN ISO 3377-2 – Tear resistance of leather (double edge tear method)
· DIN EN ISO 3376 – Tensile strength and elongation test for leather


In synthetic leather:
- Tear resistance depends on the type of base fabric (e.g., polyester, cotton) and surface coating (PU, PVC).
- Synthetic leather with strong textile backing has better tear resistance; lower-quality types tear more easily.
- Stitching areas or flex zones are particularly critical.


Relevant standards:
· ISO 4674-1 – Tear resistance of coated fabrics
· ISO 34-1 – Tear resistance of flexible plastics


In fabrics (textiles):
- Tear resistance varies depending on weave structure, fiber type, and any additional finishing.
- Tightly woven synthetic fabrics like Cordura or polyester are more tear-resistant than loosely woven cotton fabrics.
- High tear resistance is essential in outdoor gear, workwear, and technical textiles.


Relevant standards:
· ISO 13937-2 – Tear resistance of textile fabrics (trapezoidal method)
· ISO 9073-4 – for nonwovens


Conclusion:
Tear resistance is a key performance factor for durable, heavy-duty materials. Genuine leather benefits from its natural structure, synthetic leather from quality textile reinforcements, and textiles from strong fiber and weave combinations. Standards such as DIN EN ISO 3377-2, ISO 4674-1, and ISO 13937-2 are essential for accurate and consistent tear resistance testing.

What is tensile strength and its impact in genuine leather, synthetic leather, and fabrics?

Tensile strength refers to the maximum amount of stretching force a material can withstand before breaking. It is a key indicator of durability, performance, and safety, especially in applications involving mechanical stress such as upholstery, automotive interiors, bags, straps, or garments.

In genuine leather:
· Natural leather has a fibrous structure that gives it high tensile strength.
· Strength varies depending on the animal type, tanning method, thickness, and direction of the cut.
· Chrome-tanned leather typically offers high strength with good flexibility.

Relevant standards:
- DIN EN ISO 3376 – Determination of tensile strength and elongation of leather
- ISO 2589 – Measurement of leather thickness, relevant to tensile performance

In synthetic leather:
· Tensile strength depends on the quality of the textile backing and the surface coating (PU or PVC).
· PU leather with textile backing is generally stronger than PVC types.
· Poor-quality faux leather may crack, peel, or deform under stress.

Relevant standards:
- ISO 1421 – Determination of tensile strength for coated fabrics (strip or grab method)
- ISO 2286-2 – Determination of thickness and mass per unit area of coated fabrics

In fabrics (textiles):
· Tensile strength varies based on fiber type (e.g. polyester, cotton), weave pattern, and finishing.
· Technical textiles like Cordura have high resistance, while light cotton fabrics are more prone to tearing.
· High tensile strength is critical for outdoor gear, workwear, and protective clothing.

Relevant standards:
- ISO 13934-1 – Tensile strength of textiles: Strip method
- ISO 13934-2 – Tensile strength of textiles: Grab method

Conclusion:
Tensile strength is a key mechanical property for assessing the durability and load-bearing capacity of leather, synthetic leather, and fabrics. While genuine leather naturally performs well, the performance of artificial and textile materials depends heavily on their construction. Standards such as DIN EN ISO 3376, ISO 1421, and ISO 13934 provide reliable and consistent testing methods.

What is meant by thickness in genuine leather, imitation leather, and fabrics?

Thickness is the physical height of a material, measured in millimeters (mm). It directly influences the robustness, flexibility, suitability for processing, and intended use of a material—be it genuine leather, imitation leather, or textiles.

1. Thickness in Genuine Leather
Genuine leather is a natural product and varies in thickness depending on the animal species, its position on the hide, and the finishing process.
It is measured in mm or oz (ounces per square foot, especially in English-speaking countries).

Common thickness ranges:
- Fine leather (e.g., gloves, clothing) 0.5 – 1.0 mm
- Bags, accessories 1.2 – 2.0 mm
- Belts, straps 3.0 – 4.0 mm
- Saddle or tool leather 4.0 mm and more

Thickness significantly affects stiffness and the range of applications.

2. Thickness of Synthetic Leather
Synthetic leather usually consists of a backing fabric and a coating (e.g., PU or PVC). The thickness is determined by the combined height of both layers.

Typical values:
- Lightweight synthetic leather (e.g., clothing) 0.5 – 0.8 mm
- Upholstery synthetic leather 0.9 – 1.2 mm
- Automotive or outdoor 1.2 – 2.0 mm

Thicker synthetic leather is more durable but more difficult to sew.

3. Thickness of Fabrics
The thickness of fabrics is less frequently specified directly, but it is certainly relevant in technical textiles or for specific applications.
The thickness depends heavily on the material, weave, and finish.

Fabric Types
- Lightweight fabrics (e.g., chiffon) 0.1–0.3 mm
- Cotton fabrics 0.3–0.6 mm
- Denim 0.6–1.0 mm
- Fleece, softshell 1.0–2.5 mm
- Technical upholstery fabrics up to 5 mm or more

Thickness affects drape, thermal performance, and sewability.

Conclusion: Thickness and Weight
Two materials can have the same thickness but different weights (e.g., airy vs. dense structure).
Conversely, a material can be heavy but thin (e.g., tightly woven nylon).

Breite bei Kunstleder & Stoffen

Die Breite gibt die nutzbare Materialbreite pro Rolle an (meist in cm).
Wichtig für Zuschnitt, Verschnittminimierung und Flächenberechnung.


Typische Breiten:


Kunstleder:
140 cm (Standard), 150–160 cm (Taschen/Sattel), Sondermaße 120–180 cm.
Achtung: Nicht dehnbar – Nutzbreite kann durch Beschichtung leicht abweichen.


Stoffe:
140 cm (Bekleidung/Deko), 150–160 cm (Jersey, Leinen), 280–300 cm (Bettwäsche/Vorhänge).
Unter 100 cm bei Spezialstoffen.



Warum ist die Breite wichtig?

Bestimmt die benötigte Länge für deine Fläche (z. B. 2 m × 140 cm = 2,8 m²).
Große Breiten sparen Verschnitt (z. B. für durchgehende Vorhänge oder Polster).
Bei dehnbaren Stoffen: Nutzbreite kann etwas kleiner sein als angegeben.



Tipp: Miss deine Schnittteile vor dem Kauf – so vermeidest du Überraschungen!