B&P Littleford’s twin-screw extruders are the industry’s best in class compounding machines. B&P Littleford’s line of twin-screw extruders are expertly engineered, skillfully constructed, and rigidly tested to handle the most challenging and demanding industrial applications that require kneading, dispersive mixing, distributive mixing, and reactive extrusion.
B&P Littleford’s twin-screw machines can be used in the polymer, chemical, and food industries for mixing a wide variety of consumer products, including:
Request a Quote
All B&P Littleford twin-screw extruders – the BP, CT, and Specialty - have two intermeshing, co-rotating screws mounted on splined shafts in a closed barrel. The screws are tight and self-wiping, which eliminates stagnant zones over the entire length of the process section. This results in high efficiency and perfect self-cleaning.
Sized to operate for small-scale runs in the lab to large-scale manufacturing.
B&P Littleford’s line of twin-screw machines also feature:
B&P Littleford’s series of high-performing, low-maintenance twin-screw extruders and compounding machines deliver the power and precision you require for high-quality compounding and mixing.
The BP series extruders have larger free volume per unit length for a given diameter twin screw extrusion system. Owing to their inherent deeper channel screw geometry, the twin screw machines are characterized by narrow residence time distribution, high rate of melt surface renewal, low gas speeds and low shear energy input. They are therefore widely used for highly filled compounds, TPE preparation, and in the reaction, concentration and residual degassing of various polymers.
B&P Littleford’s CT series extruders are engineering work horses for high torque, high speed compounding applications such as alloying, filling, mixing, reinforcing, and compounding of masterbatches and color concentrates.
Designed specifically for the high-torque, high-speed demands of thermoplastic compounding applications, the CT Series twin screw compounder features modular, sectioned barrels and screws for easy adaptation to your processing and mixing demands.
B&P Littleford’s Specialty series extruders allow for excellent mixing, optimal degassing, and reliable cooling with high throughput.
B&P Littleford’s decades of experience in mixing, outstanding engineering, and construction skills come to the forefront in execution of its Specialty series extruders. This technology is setting new standards in melt devolatilization, and in the manufacture of various polymers, compounds and chemicals.
BP Series
CT Series
Specialty
OD/ID Ratio
1.76
High Free Volume, Moderate Shear
1.55
Medium Free Volume, High Shear
1.76
High Free Volume, Low Shear
Specific torque (Nm/cm3)
7 – 14
11.5 – 13.7
6 – 13
Barrel Diameter
19, 30, 40, 50, 65, 80, 100, 125, 160
26, 40, 58, 70, 92, 133
30-160
Barrel Design
5D segmented standard, Clam-shell opening optional, XLT design (option)
4D segmented standard
5D segmented standard, Clam-shell opening optional, XLT design (option)
Highlights
Optimum performance and flexibility
Energy efficiency
Ease of feeding
Proven capability
Consistent performance
Modular construction
Customized to handle unconventional processes
Disclaimer: Due to continuous development, actual parameters may differ slightly from those mentioned in the above table.
Our extruders are configured to help you innovate, maximize and lead. All B&P Littleford twin-screw extruders are equipped with closely intermeshing self-wiping co-rotating screws for mixing. Modular segmented barrel sections and various types of screw elements offer maximum flexibility and cost effectiveness. Specially adapted upstream equipment for feeding and downstream equipment for pelletizing after mixing further expand the extruders into complete systems. We offer extruders in sizes ranging from those suitable for lab scale testing, to pilot and small production runs, to large-scale manufacturing.
B&P Littleford’s process control system provides visualization functions to regulate and monitor the mixing process in real time. The system is a clearly arranged touch display and membrane keyboard that allows for:
The control system can also be tailored to integrate the upstream and downstream components and provide seamless control of the entire line for enhanced operational efficiency.
B&P Littleford offers a complementary range of ancillary equipment as well as customized control system integration to provide you with a comprehensive and optimized turnkey solution. Our coherent design, planning, and execution of the entire compounding and mixing system pays off for you through system components that are harmonized to each other. Contact us today for details on how we can help with running trials at our Tech Center in Saginaw, MI or helping you design your next process line.
B&P Littleford designs, develops, and delivers a wide range of mixing, drying, compounding, reacting, extracting and centrifugal separation equipment for many different manufacturing applications.
Request a Quote
Extrusion transforms viscous substances into high-quality structured products by accurately controlling processing conditions. Raw materials can be solids (powders, granulates, flours), liquids, slurries, and even gases. Once extruded, these materials become plastics compounds, chemically modified polymers, textured food and feed products, cellulose pulps, and other products. B&P Littleford’s twin screw extruders can transport, compress, mix, cook, shear, heat, cool, pump, and shape with a high degree of flexibility.
A twin screw extruder is a machine consisting of two intermeshing, co-rotating screws mounted on splined shafts in a closed barrel. The screws are tight and self-wiping, which eliminates stagnant zones over the entire length of the process section. This results in high efficiency and perfect self-cleaning. Twin screw extruders can be used in polymer, chemical, and food industries for mixing a variety of consumer products like:
A single screw extruder are single screw machines, while twin screw extruders, as the name implies, have two screws. In single screw extruders, the granular materials stay longer in the extruder and slow production time. Twin screw extruders offer the following advantages:
Extrudes are used to extrude viscous substances into high-quality structured products by accurately controlling processing conditions. Once extruded, these materials become plastics compounds, chemically modified polymers, textured food and feed products, cellulose pulps, and other products.