Woodworking is a complex process that makes use of a wide range of machines.  For some processes you may have the choice of several machines to do the same type of job, but each machine gives a different result.  An example of this is the cold or hot press.

For more cold press equipmentinformation, please contact us. We will provide professional answers.

Cold Presses

Cold presses use ambient platens, or rollers to generate force.  The amount of temperature, pressure, time and moisture content all factor into how the process works.  Cold presses can also be more economical to run then hot presses.  Which is a bonus when energy prices are at their highest.

It is well known that cold gluing is the best solution for certain types of applications.  The cold process can produce a finished product with better characteristics than those which can be obtained by hot pressing.

One of the limitations of a cold press is the long curing times of the glue.  This takes much longer than the hot press.  However, this limitation is being overcome by the new generation of glues.  Glue curing time has been greatly reduced when used within a cold press.

Cold presses allow you to press in a stack using cold curing adhesives.  They are used for veneering chip board and MDF panels, laminate panels, doors and more.  Cold presses are popular in the furniture industry.  Whereas hot presses are popular in, but not limited to, the marine industry for making polymer fenders.

Hydraulic Cold presses create greater forces to produce products that may need shaping.  Used for making doors, room dividers and much more.  These machines can be used to work with plywood, MDF sheets and various other surfaces.

A cold press is a heavy duty machine that will make your production line more efficient and profitable.  This is a machine you can expect to have for a very long time and should be seen as an investment instead of a cost.

With Allwood's expertise it won't take you long to find a cold press that will be appropriate for your business and give you effective results.

View the cold presses we currently have in stock.

What Allwood provides

Thanks to years of experience in designing and developing presses for the wood industry, Allwood now offers a wide range of models with specific features designed to meet different production requirements for the wood, plastics and metal-working industries.

Virtually any component that goes into a wood or composite panel construction, can be manufactured in a process utilising a cold or hot platen style press.

View Interwood Presses - exclusive new models to Allwood

You can view all of our current presses on our website, but if you can't find what you are looking for please do not hesitate contacting Allwood.

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What is the Advantages and Disadvantages of the expeller pressing method of Extractng Oil?

Usually there two main methd of extracting oil, they are mechanical pressing with expller press and chemical methos with with solvent. However for some seeds, such two stage processes (pre-press/solvent extraction) are now widely applied.

What is Expeller Pressing?

Expeller pressing is the method of extracting oil with a mechanical press rather than utilizing a chemical extraction process. An

Expeller pressing is the method of extracting oil with a mechanical press rather than utilizing a chemical extraction process. An expeller press is a screw type machine, which presses oil seeds through a caged barrel-like cavity. This machine uses friction and continuous pressure from the screw drives to move and compress the seed material. The oil seeds through small openings that do not allow seed fiber solids to pass through. Afterward, the pressed seeds are formed into a hardened cake, which is removed from the machine. Pressure involved in expeller pressing creates heat in the range of 140-210º F (60-99º C).

Advantage and Disadvantages of the Expeller Pressing Method

Expellers can be used with almost any kind of oilseeds and nuts. The process is relatively simple and not capital-intensive. While the smallest solvent extraction plant would have a processing capacity of 100-200 tons per day, expellers are available for much smaller capacities, from a few tons per day and up.

There are no solvent (chemical) residues in oil that has been expeller pressed resulting in a cleaner more pure oil, higher in natural colors and flavors. The process of extraction is the critical quality difference between oils often found in the natural foods marketplace as opposed to mass market or supermarket brands.

The main disadvantage of the expeller pressing method is its relatively low yield of oil recovery. Even the most powerful presses cannot reduce the level of residual oil in the press-cake below 3 to 5%. In the case of oil-rich seeds such as sesame or peanuts this may still be acceptable. Furthermore, most of the oil left in the cake can be recovered by a stage of solvent extraction. Such two stage processes (pre-press/solvent extraction) are now widely applied.

Expellers can be used with almost any kind of oilseeds and nuts. The process is relatively simple and not capital-intensive. While the smallest solvent extraction plant would have a processing capacity of 100-200 tons per day, expellers are available for much smaller capacities, from a few tons per day and up.There are no solvent (chemical) residues in oil that has been expeller pressed resulting in a cleaner more pure oil, higher in natural colors and flavors. The process of extraction is the critical quality difference between oils often found in the natural foods marketplace as opposed to mass market or supermarket brands.The main disadvantage of the expeller pressing method is its relatively low yield of oil recovery. Even the most powerful presses cannot reduce the level of residual oil in the press-cake below 3 to 5%. In the case of oil-rich seeds such as sesame or peanuts this may still be acceptable. Furthermore, most of the oil left in the cake can be recovered by a stage of solvent extraction. Such two stage processes (pre-press/solvent extraction) are now widely applied.

Oil Extraction Machine Complete Guide

Oil Extraction Machine Complete Guide

From peanut butter and coconut oil to CBD products and fragrant soaps, oil extraction is the process behind many valuable items derived from agricultural products. Creating those products calls for an oil extraction machine. Oil extraction machines are a versatile type of machinery, helping agricultural businesses do more with their yields. These expeller pressers are typically based on a screw system, putting heat, friction and pressure to work as they squeeze oils out of different materials.

Let's take a closer look at how oil extraction machines work, how they're used and what they're made of.

What Is an Oil Extraction Machine?

An oil extraction machine, also called an oil press or expeller, uses high pressure and heat to “squeeze” the oils out of a plant product. Those products — including seeds, nuts, vegetables, fruits and leafy plants — release their oils through this mechanical process, which is often done without adding any chemicals.

Oil extraction machines typically use a screw press. Some products, like groundnuts, need to be shelled or peeled before moving through the screw press. The peeling process might use powerful centrifugal forces or airflow from a fan to separate lightweight shells from the heavier nut.

Contact us to discuss your requirements of vegetable screw press machine companies. Our experienced sales team can help you identify the options that best suit your needs.

After peeling, the product is fed into the screw system, which comprises a screw inside a high-pressure cylindrical chamber. The material moves through the screw, generating friction and heat. While the high pressure squeezes out much of the oil, the heat contributes, too. It can denature some of the proteins in the product and increase the viscosity of the oil for easier movement.

As the oil is pressed out, it seeps through a screen or filter to ensure that no solids or fibers move with it. This creates a clean, smooth product. The leftover pressed seeds form a hard cake that is removed from the machine, and the oil flows out into a separate container.

The heat generated in this process can affect some materials in undesirable ways, and harder products like nuts generate more heat than softer products like fruits. To combat the extra heat, some users choose to cold-press certain materials by controlling the temperature in some way. They might use some additional chemicals or a centrifugal system to help draw the oils out without adding more pressure.

Uses of an Oil Extraction Machine

Oil extraction machines are very versatile. You can find different styles to accommodate various agricultural products, and the oils can be made into numerous items, like cooking oils, fragrances, cosmetics, soaps, pet food, biofuel, wood treatments and paint.

Some of the plant sources that work with oil extraction machines include:

Seeds: Oils can come from seeds like cottonseed, sesame, hemp, sunflower, amaranth and canola. They're often used for cooking applications, but they can also be found in items like fuel and paint.

Nuts: The nut harvesting industry can create oils from peanuts, almonds, hazelnuts, cashews and many other nuts. These tend to be more expensive than other oils because the extraction process is more challenging. They take more pressure to crack, usually require peeling and produce more heat than other products do. Nut oils are common in food and cooking, with some applications in cosmetics, too.

Vegetables and fruits: Oil extracted from fruits and vegetables like olives, palm fruit and avocados are also used in cooking, as well as in biofuels, cosmetics and soaps. Citrus fruits like lemons and oranges can also be pressed and used in essential oils.

Other plants: Leafier plants like chamomile, eucalyptus, oregano, patchouli and peppermint also release oils. These products are often used as essential oils and in items like cosmetics, candles, perfumes and soap. Many people use the essential oils themselves as fragrance and for purported health benefits. Oil can even be extracted from algae and used in biofuel and nutritional supplementation.

The amount of oil you get from each product can vary. Peanuts, for instance, have a high oil content of 45-52%, while hemp seeds contain about 25-30% oil. In some cases, the leftover materials generated from the extraction process are valuable, too. Canola meal is the material left after the oil is extracted from the seeds, and it is 38-42% protein. It also contains a good balance of amino acids, making it a popular additive for livestock feed. Oil extraction machines can help expand one product in many different avenues.

The price of oil products makes them a great way to potentially get more value out of crops. Many types of oils, especially those that are used in biofuels, have seen significant price increases. If you're looking for something else to do with a crop, such as new revenue channels or using up extra inventory, oil extraction could be a good option.

Parts of an Oil Extraction Machine

Oil extraction machines can come in several configurations, but here are some of the main components you'll typically find:

Hopper: The hopper is a metal structure that funnels the raw material into the screw press.

Screw press: The screw press is the powerhouse of the oil expeller. The screw shaft rotates within a cylindrical cage, pushing the material forward in a high-pressure chamber. Friction is generated between the material, the screw shaft, the feedstock and the press chamber itself.

Gear reduction unit: The gear reduction unit, or gearbox, converts the speed and torque of the electric motor to the right settings for the machine.

Slots or screens: A screening surface allows oils to seep out while keeping the leftover materials moving through the screw, where they press into a “cake” for removal.

Frame: The metal frame provides the support for and connects these components.

You'll find various other parts in an oil extraction machine like lock nuts, rings, seals and gaskets that make up these larger components and link them together. These parts might be made of metals and elastomeric materials, both of which offer long-lasting durability in the tough, messy conditions of oil pressing.

Elastomeric Components for Oil Extraction Machines

Global Elastomeric Products creates a wide range of elastomeric products to support your oil-pressing operation. We produce a variety of tools, including custom rubber molding for the agricultural industry, and we can help you keep your equipment running smoothly or bring new machinery to life with custom rubber molding. Our company's ISO certification and in-house engineering allow us to build high-quality components for your unique needs.

To learn more about our custom rubber molding process and how we can assist with oil extraction equipment, please reach out to us with any questions or to request a quote.

What benefits have of cold-pressed oil of the new oil press machine？

Oil pressing generally has two forms, divided into cold pressing and hot pressing, each method has different advantages, different oil seeds are also used in different ways, so those oil seeds are suitable for cold pressing? What are the advantages of cold-pressed oil? As an oil press manufacturer with ten years of experience, Benteng Machinery will answer these questions in detail and solve your doubts.

Cold-pressed oil from the new oil press retains its natural characteristics and is free of any harmful effects that traditional high-temperature oil pressing can have on the oil. Cold-pressing oil is the best choice for healthy living. It retains its natural flavor and color and all the nutrients. To ensure oil production, cold pressing generally requires secondary pressing and third pressing.

Cold-pressed oil has many advantages:

1. The cold pressed oil promotes the development of the nervous and bone systems. And can prevent the development and progression of diseases like arteriosclerosis, cardiovascular disease and diabetes. It also has a positive effect on metabolism.

2. Cold-pressing oils from cold press oil machine preserve nutrients, high levels of unsaturated fatty acids . And eliminate harmful substances such as acids, alkalis, and heavy metals. The oil smells pleasant and appetizing.

3. The performance of the crude oil press exceeds the national standard. Oil processing doesn’t require heating or frying and does not require the need to remove the shell. Oil can be directly pressed. It has a high oil quality and a pure taste. It’s a 21st-century green edible cold press oil wood machine.

In conclusion, the benefits of cold-pressed oil are many, but the raw materials must be screened. Otherwise, it is likely that due to the different maturity of raw materials. The quality of cold-pressing oil will be also affected, which will affect people’s eating experience. The most important is that choose a suitable cold press oil extraction machine

If you are looking for more details, kindly visit automatic screw press machine manufacturers.