Introduction New Genuine Leather
Leather production is a careful process where every stage helps shape the final quality, thickness, softness, and appearance of the leather. After tanning and sammying, one important mechanical step is the splitting process.
Splitting is used to divide thick leather into layers and create the required thickness for different leather products. Without proper splitting, leather may remain too thick, uneven, heavy, or unsuitable for finishing.
At newgenuneleather.com, we believe that premium leather depends on controlled processing. Splitting may be a mechanical operation, but it plays a major role in producing leather that is smooth, uniform, and ready for high-quality products.
What Is Splitting in Leather Processing?
Splitting is the process of cutting leather horizontally into layers using a splitting machine. The leather is passed through a machine with a sharp band knife that separates the hide into the required thickness.
The upper layer is usually called the grain layer, which contains the natural outer surface of the hide. The lower layer is often called the split layer, which can be used for suede, corrected leather, or other leather products depending on quality and processing.
In simple words, splitting divides thick leather into thinner layers so it can be used more efficiently and accurately.
Why Is the Splitting Process Needed?
1. Controls Leather Thickness
Different leather products require different thickness levels. Jacket leather needs to be soft and lighter, while belt leather needs to be thicker and stronger. Shoe upper leather, upholstery leather, bags, wallets, and gloves all need specific thickness ranges.
Splitting helps adjust the leather to the required thickness before further processing.
2. Creates Uniform Leather
Natural hides are not the same thickness in every area. Some parts are thicker, while others are thinner. Splitting helps make the leather more uniform and easier to process.
Uniform leather improves cutting, stitching, dyeing, finishing, and final product quality.
3. Improves Material Use
A thick hide can be separated into more than one usable layer. This improves material efficiency and allows tanneries to use the hide more effectively.
The grain layer may be used for premium leather goods, while the split layer may be processed for suede, lining leather, or other applications.
4. Prepares Leather for Shaving
After splitting, leather often moves to the shaving process. Shaving further adjusts and evens the thickness. Splitting removes the major thickness difference first, while shaving gives more precise thickness control.
This makes later processing smoother and more accurate.
5. Supports Better Finishing
Leather that is too thick or uneven can create problems during dyeing, drying, softening, and finishing. Proper splitting helps the leather behave more evenly in later stages.
This supports a cleaner surface, better flexibility, and a more professional final appearance.
How Is the Splitting Process Done?
In modern tanneries, splitting is done with a leather splitting machine. The leather is placed into the machine, where rollers guide it toward a sharp band knife. The knife cuts the leather horizontally into layers.
The operator controls the machine setting according to the desired leather thickness. This step requires experience because incorrect splitting can damage the grain, waste material, or create uneven layers.
The machine must be sharp, clean, and properly adjusted to produce smooth and accurate splitting.
When Does Splitting Take Place?
Splitting can be done at different stages depending on the tannery process and leather type. It may be done before tanning, after tanning, or after sammying.
In many post-tanning workflows, splitting is done after sammying because the leather has a more suitable moisture level and is easier to handle. Proper moisture balance helps the machine cut more cleanly and evenly.
The timing depends on the leather type, thickness, and final product requirement.
Grain Split and Flesh Split
Splitting creates different layers of leather.
Grain Split:
This is the top layer of the hide. It contains the natural grain surface and is usually used for higher-quality leather products such as bags, shoes, jackets, upholstery, and premium accessories.
Flesh Split:
This is the lower layer of the hide. It does not have the natural grain surface, but it can still be useful. It may be processed into suede, lining leather, coated split leather, or other products.
Both layers can be valuable when processed correctly.
What Happens After Splitting?
After splitting, the leather usually moves to shaving, neutralization, retanning, dyeing, fatliquoring, drying, and finishing.
Common next steps include:
Shaving: Makes the thickness more precise and uniform.
Neutralization: Balances the leather for further chemical treatment.
Retanning: Improves fullness, softness, firmness, and final character.
Dyeing: Adds the required color.
Fatliquoring: Adds softness and flexibility.
Drying: Removes moisture under controlled conditions.
Finishing: Adds final surface protection, texture, shine, and appearance.
Splitting prepares the leather for these steps by creating the correct thickness foundation.
What Happens If Splitting Is Not Done Properly?
Poor splitting can create serious problems. If the machine is not adjusted correctly, the leather may become uneven, too thin, too thick, or damaged. The grain layer may be cut too deeply, reducing the value of the leather.
Uneven splitting can also cause problems during shaving, dyeing, stitching, and finishing. It may lead to weak areas, rough texture, poor shape, and inconsistent product quality.
This is why splitting must be done with skilled operation and proper machine control.
Splitting and Premium Leather Quality
Premium leather must have the right thickness, smooth structure, and uniform quality. Splitting helps achieve these qualities by preparing the leather for accurate thickness control and efficient production.
When splitting is done correctly, the leather becomes easier to process, easier to finish, and more suitable for high-quality products. It also improves material use by allowing different layers of the hide to be used for different purposes.
At newgenuneleather.com, we understand that every technical step contributes to the final leather value. Splitting is one of the key stages that helps transform tanned hides into usable, refined, and premium leather.
Conclusion
Splitting is an important mechanical step in leather processing. It divides thick leather into layers, controls thickness, improves uniformity, supports better material use, and prepares leather for shaving and finishing.
Without proper splitting, leather may become uneven, difficult to finish, or unsuitable for premium products.
At newgenuneleather.com, quality leather begins with expert processing, and splitting is one of the essential steps that helps create smooth, uniform, and high-quality leather for finished goods.
