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Modeling Single Screw Extrusion Processing Parameters and Resulting Extrudate Properties of DDGS-Based Nile Tilapia Feeds


A single-screw laboratory extruder was used to conduct an L18 Taguchi fractional factorial study of aquafeed processing. The materials were based on a formulation for nutritionally-balanced Nile tilapia meal plans containing distillers dried grains with solubles and soybean meals because the main protein options, furthermore to constant amounts of corn flour, whey, and fishmeal. The consequences of three degrees of DDGS, soybean meal, ingredient moisture content material, screw speed, die dimension, barrel temperature and two plastic extrusion die degrees of screw construction on extrudate physical real estate and extruder processing parameters were determined. Data from raw materials, processing conditions, and extrudate real estate were used to develop surface area response equations and curves. However, predominantly low R2 values simply permitted linear relationships around lots of independent response and parameters variables. Regarding main effects, die pressure considerably decreased with larger DDGS levels, moisture content, temp, lower die L/D, and larger screw compression. Growth ratio decreased with higher dampness articles and lower die L/D significantly. Significant differences on color were caused by changes on DDGS moisture and levels content material. In summary, DDGS, moisture content material, die dimension, and extrusion circumstances had the largest impact on the majority of the extrudate physical properties and processing conditions. Diverse combinations of these independent factors may be used to obtain desired extrudate physical homes and processing conditions.

What is Profile Extrusion


Account extrusion is extrusion of a shaped product that can be a number of configurations but will not include sheet or film products. Profile extrusion can include solid forms in addition to hollow forms. Products which range from tubing to windows frames to vehicle door seals are constructed this way and considered profile co extruder extrusion.

To process hollow forms a mandrel or pin is utilized in the die to create the hollow sections. Multiple hollow sections require multiple pins. To generate these hollows a source of air must allow the center of the merchandise to maintain shape and not collapse in vacuum pressure. Usually an air source will be utilized to keep the appropriate airflow in the cavity.

If several materials must make something, the co-extrusion process is used. For example, a white drinking straw which has 2 hues of stripes on it, requires a total of 3 extruders. Each extruder feeds a different materials or variation of the same material right into a central co-extrusion die.

Vip Rubber acquires plastic extrusion unit


Rubber and Plastic Co., a custom manufacturer of rubber and plastic material goods in La Habra, Calif., has bought Bandlock-the non-fenestration portion of AmesburyTruth's plastic extrusion business.

The acquisition includes a 72,000-sq.-ft. facility in Ontario which will allow Vip to provide improved or new products, such as for example laser printing, sizzling stamp foils, polycarbonate, glow-in-the-dark materials, larger profiles and in-series punching and notching.

Existing and new customers will take advantage of the blending of the two extraordinary companies with a strengthened infrastructure and elevated production capabilities, which include extruded and molded rubber products, and calender sheet rubberized, Vip President Howard Vipperman said in a reports release.

Terms of the offer were not disclosed. Vip is undoubtedly a family-possessed business founded in 1961. The business had corporate product sales of $22 million in 2014, including $9 million linked to pipe, tubing and profile, which placed it 141st among North American PPT extruders, according to a ranking

by Plastics News, a sister publication of Rubber & Plastics News. AmesburyTruth, a company of door and windows components for home and commercial applications, is undoubtedly a subsidiary of London-based Tyman P.L.C., which trades on the London Stock Exchange.

About 80 percent of Vip's PPT sales this past year were in profiles and 20 percent in tubing for a number of end markets ranging from appliances and aerospace to windows and weather-stripping. The company had 25 employees working eight manufacturing lines, according toPlastics News' info.

Vip's employees grew by about 50 staff members with the acquisition.

(They) remain employed and operating at that Ontario service, Vip Marketing Vice President Cindy LeClair said in an email. We will not keep the Bandlock name. It'll be absorbed in to the Vip Plastic material and Rubber name.

AmesburyTruth retains the fenestration tailor made extrusion business, several Ontario workers and the Bandlock Couplers organization. The ongoing company has a U.S. foundation in Edina, Minn., and facilities throughout plastic sheet extruder machine THE UNITED STATES producing home window and door extrusions, hardware and sealing systems for leading window and door manufacturers.

AmesburyTruth will consolidate extrusion operations for fenestration products found in Cannon Falls, Minn., where the center was upgraded to satisfy future demand. An engineering team works there with a concentrate on material evaluation also, process merchandise and improvement design for fenestration customers.

Our goal is to be North America's No. 1 supplier of windows and door components, AmesburyTruth President Jeff Graby explained in a news launch. We're aligning our business to become the premier producer of fenestration components, and streamlining our production efficiencies to reinforce our capabilities.

The Bandlock Couplers business already has relocated from California to the company's operations in Fremont, Neb., which offers steel fabrication and manufactures fittings and couplings for the vacuum market.



Plastic material profile and pipe lines may be used to create a selection of products including pipes, tubing, straws, window frames, wall molding, and residential siding. The equipment to create plastic pipe and account hasn't changed significantly in recent years and used tools offers a higher return on purchase. The normal life of new products from a reputable company is 20+ years. Its life can be extended if looked after and maintained properly. The main considerations when buying fresh or used plastic profile or pipe line equipment are cost, functionality and delivery time.

Pipes and profiles are actually formed when plastic pellets are fed into an extruder, melted and conveyed through a die. The pipe or profile then switches into a water tank to end up being cooled and sized. If the product needs to retain its form during cooling, vacuum pressure shall be applied to a water bath. Following this right portion of the process, the pipe or account is usually pulled through the water tank by way of a puller. Then a cutter or winder is going to be applied. With a cutter, the pipe or profile is undoubtedly cut to a pre-specified length. With a winder, the merchandise is wound onto a coil or spool.

When purchasing a applied profile and pipe line, consider the extruder make, type (AC or DC) and horsepower of the motor, barrel venting, types of controls, type of feeder, condition of the barrel and overall look of the applied extruder.

Another consideration may be the die. The die needs to match the level and potential of the extruder together with cast the correct profile for the merchandise. For this reason, pipe and account dies are custom manufactured and not purchased on the used market generally. When investing in a water tank, consider the distance, width, and elevation of the tank to ensure the pipe or account fits. It needs sufficient time and energy to cool also. Also consider the engineering material: stainless steel is preferred since it doesn t rust but water tanks are also available in metal and carbon metal. If the container is under a vacuum, the number and type of vacuum pump is important. The most common makes are Conair, Gatto, CDS and RDN.

Used pullers can be purchased in several types: cleat or belt. Ensure the contact and width length of the belt is appropriate. Also consider motor horsepower and type (AC or DC). Common makers are Conair, Gatto, CDS, Farris, Boston Matthews, Metaplas, Goodman, ESI, and RDN.

You can find two types of cutters: saw and flying knife. A saw is used on thicker pipes and profiles and includes a slower operation. A flying knife cutter is used on smaller pipes and profiles and operates at larger speeds. When purchasing a found cutter, consider the diameter of the blade and kind of controls for the machine. The capacity ought mixer extruder to be sized according to the level of the extruder and all of those other line. When purchasing a flying knife cutter, consider the capability, types of controls, model and brand. The system could be servo or air electric driven with the servo electric drive offering greater accuracy. Manufacturers include Conair, RDN, CDS, and Farris (Boston Matthews).

When purchasing a winder, consider the capacity (sized appropriately with the rate of the extruder and the rest of the line), the face width and the size of the roll. Manufacturers involve Progressive, Plastiprogram, and Vulcan.

Used Pipe and Account Lines

There are several components to used profile and pipe lines. When purchasing used profile and pipe lines, consider this, manufacturer, kind of blade, motor hp, construction material and capacity. The advantages of investing in a used profile and pipe line include immediate installation and competitive price. Choose a reputable manufacturer with maintenance records. Perry Videx maintains a large inventory of employed pipe and profile lines.

Twin Screw Extrusion Processing of Rainbow trout (Oncorhynchus mykiss) Feeds


Twin-screw extrusion cooking trials were performed to investigate the differential ramifications of conventional DDGS (DDGS) and HP-DDG inclusion, seeing as fishmeal replacers, on physical real estate (moisture content, normal water activity, thermal properties, expansion ratio, unit density, mass density, water absorption, solubility and pellet stability indices, and color) of Rainbow trout (Oncorhynchus mykiss) feed. Four element blends were developed with 20 and 40% C- DDGS, and 20 and 40% HP-DDG, along with other required dietary ingredients. Each diet plan was extruded using two replications; a fishmeal centered diet acted as the control diet. The best and the lowest extrudate moisture content and drinking water activity were observed for the diets comprising 20% DDGS and 40% HP-DDG, respectively. Compared to the control diet, increasing HP-DDG content from 20 to 40% had no influence on the bulk density of the products, while increasing DDGS content material from 20-40% resulted in a significant rise in bulk density of the extrudates by 14.2 and 6%, respectively. Likewise, extrudates with the cheapest brightness, greenness, and yellowness ideals were acquired from the diet comprising 20% DDGS, whereas the most color intensity values were noticed for the diets made up of 40% DDGS and 20% HP-DDG. Increasing DDGS and HP-DDG from 0-40% caused an extraordinary increase in drinking water absorption index, by 72 and 30%, respectively. Similarly, the drinking water solubility index increased, but in a considerably lesser order of magnitude. High pellet toughness index of more than 99% was achieved with inclusion of either DDGS or HP-DDG. None of the eating plans impacted the thermal properties of the extrudates. Inclusion of 20 and 40% DDGS resulted in the extrudates with the biggest and the tiniest unit density values of almost 887 and 750 kg/m3, respectively. As was expected, growth ratio decreased with increasing product density. Increasing inclusion levels of HP-DDG did not show any effect on unit density or growth ratio of the merchandise. Future research should focus on investigating the effects of both extrusion processing and graded degrees of various kinds of DDGS on Rainbow trout single screw extruders feeds.

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