Spin Finish Oils

Spin finish oils are liquid compositions with components such as Lubricants, emulsifiers, and antistatic agents. These products widely function on the surfaces of man-made fibers to optimize their processing in short or long-staple spinning. It happens due to some inconveniences in the textile industry, like the increase in the temperature of fibers and yarns, yarn breakage, machine malfunctioning, and yarn tension that is uncontrolled without the use of the spin finish. Manufacturers present this product in various grades and qualities, each suitable for a specific material and process.

JAM Group Co. is a prominent spin finish oil manufacturer that provides different grades of this valuable liquid for application in the textile industry. The competitive textile market demands high standards for product quality, customer satisfaction, and innovation. As a result, JAM Group is continually working on research and development with a focus on minimizing the impact of its procedures on the environment. Customers worldwide can rely on this Spin Finish Oil Supplier’s products for the fabric finishing process, from spinning to the final stages. It is also worth mentioning that JAM Group, a powerful spin finish oils exporter, provides clients with special packing and shipping plans; To find out more, you can refer to About Us page.


What are Spin Finish Oils?

People in the industry might hear the phrase “spin finish” and “spin finish oils” in many fields. Still, we cannot disregard the vast application of this chemical compound in the textile and spinning industry. The phrase “spin finish” has many different definitions in the textile industry nowadays. A spin finish is a solid or liquid mixture added to the surfaces of synthetic fibers to improve the short-staple or long-staple spinning processing of such threads. It is the same thing when it is referred to by different names like spin finish, spinning finish, waxing, size, dressing, coating, fiber finish, spinning lubricant, agent, textile treating component, agent, and condition agent.
The spin finish is a crucial factor in the overall performance of continuous polyester filament (CF) fibers and yarns in modern industrial textile manufacturing processes. Production lines for nylon and polyester fiber yarn frequently use additive finishes, and the market for polyester filaments is expanding quickly. There may be a reason for it, such as the occasionally high price and limited nylon supply and the use of polyester as a less expensive, more readily available substitute in many applications.


Spin finish oils are created with specific added value features in consideration, as well as performance and processability benefits for polyester yarns. These additives are often based on mineral or ester oils and applied to fully-drawn yarns (FDY) and spin-drawn yarns (SPY). In this situation, Spin Finish Oils (or Textile Oils) are used as a lubricant to protect man-made fibers from static electricity while lubricating their surface and plasticizing them for the spinning process. It is also worth mentioning that different grades of spin finish oil are produced and used, each for a particular type of fiber, for instance, polyester staple fiber. Polyester Staple Fiber (PSF) is a polyester fiber manufactured from recycled PET bottle flakes, PTA, MEG, or PET chips. It is administered soon before winding up while the fluid is still. Other coatings lack mineral oil and could be categorized as biodegradable since they dissolve quickly in water, improving the uniformity of dyeing and laundry.

Spin Finish Oil Merits

Using different spin finish oils, industrial polyester yarn can have advantages and capabilities, for instance:

  • Better cohesiveness of the filament throughout the process of warping, knitting, twisting, and texturing;
  • Reduced electrical conductivity for yarns that are not conducive;
  • Thermal stability to guard against yarn damage for better processing;
  • Improved colorfastness and dyeing uniformity;
  • Anti-wicking or Water Repellent;
  • Lubrication and reduced friction;
  • Activation of Adhesion (AA);
  • Adhesion to Abrasion;
  • Anti-microbial;
  • Fire resistance;
  • Decreased or eliminated the static electrical charge.

Customers must also know that while textile spin finish oils are commonly used by nylon and polyester fibers, processing other highly developed industrial yarns frequently calls for the usage of proprietary spin finish additives. Yarns, such as:

  • Vectran yarns;
  • Carbon fiber yarns;
  • Fiberglass yarns;
  • Para and Meta Aramid yarns;
  • PEN (Polyethylene Napthalate) fibers.


Different Grades of Spin Finish Oil

Due to its delicate application in the textile section, spin finish oils must be manufactured, adding various components, such as:

  • Antistatic agents;
  • Antioxidants;
  • Emulsifiers;
  • Covering agents;
  • Lubricants;
  • Antifoam agents;
  • Pigments;
  • Additional additives (such as bactericides, corrosion inhibitors, and wetting agents).

Manufacturers use different amounts of these substances to produce a unique outcome to be effective and add value to the finished product. For instance, as a typical instruction, 90% of spin finish oils are made up of emulsifiers and antistatic chemicals, but the amounts may vary in some cases. These differences lead to different grades of spin finishes. As a result, each grade of spin finish will be appropriate for a specific type of fiber with particular properties. For example, detailed CF – BCF spin finish oils for specific types of polypropylene. Different grades of this helpful product are named after their unique applications, such as polypropylene staple spin finish oil. Some other types of spin finish oil include:

  • Lubricants:
    • This kind is employed to manage the friction within the fiber. Examples consist of oils and poly glycols.
  • Plasticizers:
    • By lowering the Tg value and brittleness, this grade helps the fiber become more flexible. Examples include silicate and dibutyl.
  • Antistatic agent:
    • It is applied to fiber to lower its static charge. Lithium chloride with butyl stearate, for instance.

Moreover, some requirements must be considered in grading spin finish oil. The quality and morphology of the fibers must be unaffected by the application of spin finishes. Spin finish oil needs to be easily absorbed and cling to the surface of the thread. To prevent dry friction, it must be able to wet the fiber surface and disseminate equally throughout it. However, it must be simple to remove before dying. Additionally, it must not influence dyeing absorption, the fibers’ dye affinity, or dye fastness. Where necessary, various spin finishes have been utilized to block particular dyes. Checking that the spin finish oil won’t shorten the final yarn’s shelf life is also critical. As a result, finding a reliable spin finish oil manufacturer is vital to purchase a high-quality product that satisfies all requirements.


Spin Finish Oil Production Process

As mentioned in the previous section, each spin finish oil manufacturer presents a specific grade with particular properties that are distinctive from other products in the market. In this case, different methods and compositions of spin finish oil are used. In this article, we will discuss the production of a specific grade of spin finish oil, widely used in the textile industry. Both standard-speed spinnings of polyester and polyamide yarns and high-speed spinning of those yarns can benefit from this grade.
This technique of manufacture enables us to create a spin finish concentrate composition that, when diluted with water or another low-viscosity diluent, can be used to create a low-viscosity aqueous finish or an oil-in-water emulsion. Below, you can go through the details of this method.

The Spin Finish Concentrate Composition

By weight, the components listed below make up most of the spin finish concentrates makeup.

  • Between 5 and 20 parts of oil lubricant, chosen from the mineral oils and vegetable oils category;
  • 25 to 50 parts of Pentaerythritol ester lubricant;
  • 25 to 50 parts of Ethoxylated sorbitan monooleate, an emulsifying agent with an HLB (hydrophilic-lipophilic balance) of 6 to 15;
  • 5 to 20 parts of an anionic antistatic compound made up of oleyl phosphate that has been ethoxylated with 5 to 18 moles of ethylene oxide;
  • 0.5 to 5 parts of water-soluble sulfosuccinate wetting agent;
  • Between 2 and 10 parts of a soluble, 400–700 molecular weight ethoxylated polydimethylsiloxane wetting ingredient.

These components should add up to a total of 100. Additionally, the amount of water in this spin finish concentrate composition, which is less than 10% by weight, often originates from a few of the composition’s constituents that are also sold as water-containing formulations.

The Spin Finish Oil Composition

The mentioned concentrate composition is used to create an oil-in-water emulsion spin finish, which functions as a spin finish to polyester and polyamide yarns spun at conventional and high speeds and contains 10% to roughly 25% of the concentrate composition in water. This formula for an oil-in-water emulsion contains mainly the following ingredients:

  • Mineral and vegetable oils, with a range of 0.5% to 5% oil lubricant;
  • Pentaerythritol ester lubricant, 2.5% to 12.5%;
  • Ethoxylated sorbitan monooleate, an emulsifying agent with an HLB (hydrophilic-lipophilic balance) range of 6 to 15, which is used between 2.5% and 12.5%;
  • Between 0.5% to 4.0% from Oleyl phosphate ethoxylated with 6 to 18 moles of ethylene oxide per mole of base material and neutralized, an anionic antistatic agent that ranges;
  • Between 0.1% and 1.5% from a water-soluble sulfosuccinate wetting agent;
  • Between 0.1% and 1% from a wetting agent made of polydimethylsiloxane that is oil soluble and has a molecular weight of 400–700;
  • Between 75% to 90% water;
  • A quantity of an antibacterial agent that is effective against bacteria.

The Final Product

The outcome of this process should hold specific properties to be an effective spin finish Oil in the textile industry. The final product will likely have the following characteristics:

  • Optimum static and dynamic sliding and friction qualities;
  • Great antistatic qualities;
  • Favorable impact on crimping behavior;
  • A high degree of film stability after spinning;
  • Exemplary wetting conduct;
  • Without yellowing;
  • Without foaming;
  • Conglutination-free;
  • Without waste gases.

Moreover, the outcome must not harm machine parts’ metallic and non-metallic surfaces. Spin finish oils must exhibit minimal migration into the rubber or other polymer components, which could result in swelling and fracture. They should not have any adhesive characteristics that could make fibers stick to machines. Spin finish oils must be simple to clean from threads and equipment.
In general, spin finish oils must be safe for physiology and toxicology. They must, for instance, not result in dermatitis among spinning mill employees. Additionally, they must be eco-friendly, which means they must adhere to environmental laws and produce no hazardous byproducts, particularly when the spin finish is removed from the fiber during finishing. Ideal candidates should be biodegradable and adhere to ecological assurance programs (EAP).


Spin Finish Oil Applications

In this article, we discussed spin finish oil as a crucial participant in the textile industry. To understand the reason for applying spin finish oil in the textile industry, we must start from the beginning of this process, where things go wrong without using spin finish. During the mechanical processing of fibers and fabric manufacture, the material undergoes significant stress and friction. The high friction and abrasive pressure cause many adverse effects, such as the following:

  • The hazardous temperature rise of fibers and yarn;
  • Machine breakdowns and yarn breakage that decrease the quality of the final output;
  • Uncontrolled yarn tension that causes shrinkage and creases as the fabric forms;
  • The electrostatic charge that causes multifilament yarns to inflate and adhere to machine parts;
  • Failure of the machine as a result of fiber dust.

Therefore, it’s critical to avoid these consequences, regulate yarn tension and fiber friction during processing, and keep yarn tension under tight control while making fabrics. Specific auxiliaries are added to the fibers and yarn in addition to precise environment management (temperature and relative humidity) to stabilize the corresponding fiber qualities.

The Significance of Spin Finish Oil in The Textile Industry

Due to the problems discussed, spin finish oils are added as a vital step in manufacturing synthetic fibers like polyester, polyamide, polyolefin, or elastomer fibers. Lubricants, emulsifiers, antistatic agents, bactericides, and antioxidants are several components of these spin finish oils. These compounds’ primary mechanism of action is the development of a thin, uniform layer that covers the fiber surface, reducing surface friction and the flexural rigidity of the textile material.

To enable high-speed processing, fibers require surface treatments or lubricants. Without spin finish oil, it would be impossible to perform the various processing phases, including drawing, bulking, and textile processing, as they all depend on the unique frictional qualities of the fiber. Spin finish oil’s primary purpose is to prevent the accumulation of static electric charges on fibers during processing. There are two ways to do this. First, the finish makes the thread hydrophilic to aid in charge dissipation (leakage). Secondly, it lessens the static and dynamic friction that yarns and fibers experience when moving in contact with machine parts, decreasing the creation and accumulation of charge.

Spin finishes can also manage friction during processing. For instance, yarns drag when they move through the traveler during ring spinning or over a ceramic guide. Due to the friction between the machinery and the fibers may harm the threads if the drag is too high. A spin finish can lower the amount of friction to a point where issues like fiber end fractures are avoided. Additionally, friction can result in localized fiber fusion, mainly when high-speed winding causes the fibers to rub against guides and other machine components.


About JAM Group’s Spin Finish Oils

JAM Group Co. is among the international spin finish oil manufacturers due to its unique products. This company’s products include different advantages, such as filament cohesion, no air oxidation, excellent wetting performance, no bacterial growth, being non-carcinogenic, and possessing antistatic attributes. JAM Group’s products are also appropriate for specialized uses like soft-handled and low DPF yarns with fine single-filament titers. You can rely on different grades of the liquid from this spin finish oil supplier designed for special applications in the textile industry.
Interested companies from every corner of the world can count on this spin finish oils exporter for a safe packing and shipping process. Our experts in the logistics unit provide these services based on international standards. Still, each customer can go for their intended way of packing the product and decide on the transportation phase. For more information about our routine shipping plans, don’t hesitate to contact our experts.



Spin finish oils are valuable liquids that serve for lubricating, plasticizing, and anti-static properties in the textile industry and the spinning process. Different grades of this product are used for such purposes, and each holds various amounts of ingredients. These ingredients include Antioxidants, Emulsifiers, and Covering agents. Various methods can help us to produce spin finish oil. In our intended way, manufacturers first need to make a spin finish concentrate and then tend to create a powerful spin finish oil composition. We can summarize the functions of spin finish in textiles in three cases: surface lubricating, reducing static electricity, and improving yarn cohesion.