Home > Showroom > twin screw extruder granulator price

twin screw extruder granulator price

- Sep 09, 2022 -

twin screw extruder granulator price

Make extrusion easy with Alibaba"s wholesale plastic manufacturing catalog. Plastic extruders are machine tools that allow you to melt plastic pellets or other input materials and then reform them into useful products or sheets. twin screw granulator will be especially useful in sectors that rely on processing recycled plastics, allowing companies to close loops in their production cycle. That way, you can make manufacturing more efficient. The versatility of the extrusion process also allows you to achieve excellent results when creating plastic products.

Plastic extruders come in varying types, and you can sort through every style with Alibaba"s search engine. Many twin screw granulator are tailored for use in pipe production, and you can set them to create whatever specifications of pipe work for you. When picking a pipe making machine, check that it can handle the plastic materials you use, and compare output rates to make sure it has the production capacity required. Alternatively, you could opt for a blow film extruder to create plastic sheets and films - a good option in the food packaging industry. And there are other specialist extruders for lab use that are smaller and more adaptable.

If you need twin screw granulator, the options will usually fall into either single screw or double screw categories. Generally speaking, double screw twin screw granulator will be more efficient and faster to use, as the inclusion of two screws effectively doubles production capacity. But the cost of these plastic extruders is higher and if your production needs are more modest a single screw version will be fine. All styles can be found at wholesale prices by searching at Alibaba.com - the ideal place to equip a plastics processing plant.

twin screw extruder granulator price

Wet granulation commonly involves a liquid binder that is sprayed (fluid bed granulation) or drained slowly (high shear granulation) over a disturbed bed of powder where individual particles layer over each other on the wetting layer, in a process dubbed as agglomeration (10, 67,68,69). It is a critical technology that allows ill-flowing, poorly compressible, or poorly dissolving active substances to be transformed into elegant and efficient finished products such as tablets and capsules (70). Granulation technique can be effortlessly converted into a continuous phase using extrusion technology that involves two screws revolving within a barrel to constantly convey, blend, and agglomerate wet particles, where the energy required for material densification is provided by shear and/or heating. On the basis of the density of the material that exits from the extruder can either be used immediately (e.g., extrusion process run without die) or necessitates an additional size reduction stage to comminute the dense extrudates to granules within a particle size range (18, 44, 71). A comparison between traditional batch granulation techniques (high shear granulation and fluid bed granulation) and twin screw granulation is given in Table II. Twin screw granulation can be branched into different groups depending on the use of the binders and type of granulating solvents used in the process, such as twin screw steam granulation, twin screw foam granulation, twin screw wet granulation, and twin screw melt granulation. A summary of various twin screw granulation processes is given in Table III.

Melt granulation (MG) uses a molten binder for aggregation of raw material particles instead of a granulated liquid, thus avoiding the drying phase, reducing process time and energy consumption (81). MG based on TSE has gained acceptance in the pharmaceutical world over the last decade, based on its ability to achieve improved process control and more homogenous product quality. Since thermal energy is generated in TSMG from the barrel heaters and by friction between particles and the screw or barrel surface, it is far more effective in contrast to batch manufacturing. TSMG’s distinctive heating system facilitates uniform heat dispersion and minimizes drug degradation in case it is thermolabile (82). Also, the limited area within the extruder barrel allows effective mass and heat transfer, resulting in good product consistency (45).

Chang et al. used a twin screw extruder (HAAKE PolyLab system) for preparing a stable dispersion of ascorbic acid (AA) in a matrix of maltodextrin using water as a plasticizer. The objective here was to prepare AA extrudates that can deliver its nutritional properties without being affected by other ingredients or processing conditions. AA being readily oxidizable, the water content of the finished extrudates played a major role in the development. Scanning electron microscopy and X-ray diffraction data indicated complete miscibility of the core in the matrix suggesting a molecular level dispersion (144).

Bernard H Van Lengerich filed an international patent where the invention describes a continuous process using TSEs for fabricating distinct control release particles that encapsulate a biologically active compound without destroying their activity. The author, in two separate experiments, successfully encapsulated the microorganism Lactobacillus acidophilus and enzyme Phytase, into nongelatinized wheat starch where the blend was mixed with water in the twin screw extruder forced through the die at low temperature and low shear. The extrudate was then cut into pellets that remain shelf stable with the encapsulated component biologically active. The matrix in discussion is nongelatinized wheat starch which is used to control the release rate of the encapsulant by delaying its dissolution. Also, this being a molecular level interaction, the author also expects higher bioavailability (145).

Gajera et al. published an article where TSE (Omicron 10P—Steer Engineering) was used to dry an amorphous nanosuspension. Clotrimazole nanosuspension was prepared by antisolvent technique with soluplus® solution as the aqueous phase. The nanosuspension was then fed at a constant rate into the extruder which was maintained at a certain temperature (110–130 °C). The output consisted of the drug embedded in the soluplus® matrix. Quality by design application led to an optimized drying process that helped in achieving higher yields and minimum moisture content and optimum redispersibility in the final product (147).

Lee et al. succeeded in developing zinc supplement formulations containing zinc sulfate nanocomposites. The formulation was developed by blending zinc sulfate and soluplus and continuously feeding it to the TSE. The extruder was maintained at a temperature of 100–110 °C with a die and the extrudates were milled before further use. Characterization of the nanocomposites suggests that ZnSO4 was homogenously dispersed throughout the inert polymer with a mean particle size of 75 nm and low polydispersity. The authors established a stable formulation using twin screw extrusion technology without significant toxicity, which indicates that the formulation developed can be used in vivo effectively and safely (150).

Overcoming the limitations of methods combining TSE with homogenization, sonication, etc. (151, 152), Guo et al. developed a one-step continuous extrusion method for the production of highly concentrated lipid nanocarrier dispersions (~ 60% lipids). At an elevated temperature, a crude dispersion of lipids and surfactants is prepared in an aqueous phase. After heating the crude dispersion, it was fed into a modified TSE equipped with a cooling chamber at the end. Within the first half of the extruder, the coarse dispersion is heated, mixed, and homogenized, and then rapidly cooled in the second half to collect the extrudate below room temperature. The authors achieved a size range of less than 100 nm by increasing the lipid concentration from 20 to 50%. The article discusses the potential for twin screw extrusion technology to assist in the development of nanoparticle dispersions without requiring subsequent size reduction measures (153).

twin screw extruder granulator price

This Weber extruder has been in machine storage at Plastima Used Machinery since 2022. The machine is from 1983 and has a normal number of working hours for its age.

We sell a single-character extruder for plastic SJ 150/28, year of manufacture 2021, we only tested on it. Engine 130 Kw, capacity approx. 400 kg / hour.

This Weber extruder has been in machine storage at Plastima Used Machinery since 2022. The machine is from 2001 and has a normal number of working hours for its age.

Polymer dosing feeder is a device that is used in the plastics manufacturing process. Its main function is to feed the raw material evenly into the extruder in parts of the desired volume.

twin screw extruder granulator price

The first study for the development of pharmaceutical granules at a laboratory scale using a single-screw extruder was reported by Goodhart et al. in 1973 [47]. The investigation was undertaken to evaluate various factors related to wet granulation such as the effect of granulating fluid, type of end plate, number of mixing anvils and screw speed. Another objective of these studies was to further understand the level of content uniformity during granulation. The use of water-isopropanol as granulating fluid reduced the sugar solubility in the granulating fluid, creating increased torque during highspeed processing. The granules prepared by using this granulating fluid resulted in the compression of less gritty and smoother tablets compared to water. It was concluded that the water- isopropanol granulating fluid created processing interruption but produced granules with low bulk densities.

Later on, in 1986, Gamlen and Eardley introduced the twin screw extruder in pharmaceutical research, to produce paracetamol extrudates with a combination of excipients i.e., Avicel, lactose and/ or hydroxypropyl methyl cellulose (HPMC)