• Hot Air Dryer
  • Hot Air Dryer

Hot Air Dryer

The energy-efficient hot air dryer can be used for drying most non-hygroscopic materials, such as PS, PP, ABS, etc. The maximum drying temperature can reach 160℃

In addition, multiple optional components are available that can recycle the hot air dryer and filter the iron impurities in the material, which also can be installed on the ground with the floor stand.

  • Adopt high-quality electrical components like SCHNEIDER or SIEMENS to make its performance more stable.
  • Equipped with the all-copper silent fan to ensure the efficient operation of the fan, can continuously provide wind energy to the electric heating tube
  • The optional energy-saving heating rod can save energy up to 30% effectively.
  • Cyclone dust separator, exhaust air filter, magnetic base, N-type floor stand, suction box, hot air recycler, storage hopper are optional.
Hot Air DryerGood Quality

Yushine hot air drying hopper is ideal for plastics processing and works in an efficient fashion by continuously dispersing hot air evenly throughout the hopper. We offer various models of these dryers, all of which can be ordered online. For additional details, contact our team freely, as we’d be happy to help you.

Yushine is a professional manufacturer and supplier of the hot air drying hopper with over 15 years of experience 1-year warranty, Lifelong maintenance, and any feedback will response in 24 hours. Yushine dryers should 100% trial run and follow the quality control system strictly.

Send us your requirement, we will offer you a quotation as soon as possible.


  • All material contact surfaces are made of stainless steel to eliminate material contamination.
  • Hopper separated from its base, ensuring convenient cleaning.
  • Controller with LCD display to display and be controlled conveniently.
  • Adopts heat-insulated blower to prolong blower life span. 24 hours auto start/stop timer and double insulated hopper are available as options.
  • Cyclone dust separator, exhaust air filter, magnetic base, N-type floor stand, suction box, hot air recycler, storage hopper are optional.
Weight(KG)Heating Power(kW)Process Blower(kW)Capacity(kg)

Yushine Leading Hot Air Dryer Manufacturer

Yushine is a professional enterprise of the domestic brand in plastic & rubber auxiliary machinery fields like a hot air drying hopper. We have many project cases with large-scale companies such as TTI, PHILIPS, Delonghi, Dorel Juvenile, and so on.

Since Yushine has over 15 years of experience in this industry. We assure you that all of our hopper dryer products are tested and certified in production.

  • Yushine has passed the ISO9001 international quality system and most of our products have passed CE certification.
  • All the machines are a 1-year warranty, and any feedback will be responded to in 24 hours.
  • Strong abilities in developing and designing new machines which have passed patents for easy operation.
  • * Short-time delivery and many products are in stock.
  • YushineConcepts of “quality first, customers first, the credit first”.
Hot Air Dryer | The Ultimate FAQ Guide

Hot Air Dryer FAQ Guide is a compilation of some of the most frequently asked questions about this device.

It covers a wide range of topics on hot air dryers, including what is hot air dryer, what materials you can dry using this dryer, what is the working principle of this dryer, what are the main parts of this hot air dryer, the uses of this device and much more.

You will find almost all the types of information that you are looking for in this FAQ guide. Continue reading to uncover the remarkable information on this incredible drying equipment.

What Is Hot Air Dryer?

A hot air dryer is a machine used to dry a product. It forces heated air onto the product and circulates over it while forcing the moisture away.

Hot Air Dryer is an important component of plastic processing machinery. It is used to remove moisture content from a wide range of raw materials and resin & it is important for producing a final quality product and maximizing productivity.

Hot Air Dryer

A hot air dryer is used to dry non-hygroscopic and slightly hygroscopic plastic materials. There is no desiccant present inside the hot air dryer.

With precise temperature control, the machine guarantees the temperature difference within +/-1℃ to avoid over-drying or uneven drying. The machine has a clear indication of temperature for easy operation.

A sensing phase protection device and leakage current detection device are installed inside the motor to reduce fall accidents caused by circuit overloading or electric shock.

The maximum temperature for drying operation using a hot air dryer is 1600C. The hot-air dryer is the most commonly used and economical drying device.

How Does A Hot Air Dryer Work?

The working principle of a hot air dryer is simple and easy to understand. The ways how it works is as follows:

At first, the material you want to dry with a hot air dryer is filled into the hopper of the hot air dryer. Then you need to set the drying temperature at which you want the desired plastic material to be dried.

Working Hot Air Dryer

The temperature range varies from material to material, depending on material size, moisture content, etc.

A hot air dryer utilizes ambient air. The air gets into the dryer and first passes through the air filter to remove any impurities if present in the air.

This filtered air then goes to the blower. The blower forces the air to flow through the entire system. After passing through the blower, this air makes its way to the air heater and then enters the hopper by passing through the channel.

The air heater raises the ambient air temperature at the set level. After entering the hopper, this air passes through the material, thus taking up excess moisture within the material.

The high-humidity air then bleeds through the system through a flow control damper, and this way, the process continues.

 What Material Can You Dry through Hot Air Dryer?

Different materials exist that you can dry using a hot air dryer. Some of the main materials include:

Materials Hot Air Dryer

Polystyrene (PS)

Polystyrene (PS) is a synthetic aromatic hydrocarbon polymer made from the monomer styrene. Polystyrene can be solid or foamed. Polystyrene or PS is a lightweight, rigid material with good insulating properties. Polystyrene is conventionally used in packing and containers, electronics, toys, and many other applications. Hot Air Dryer is a mandatory requirement because you can produce even high-quality products from PS through proper drying with this machine.

Acrylonitrile Butadiene Styrene (ABS)

Acrylonitrile Butadiene Styrene (ABS) is a non-toxic, extremely popular, and widely used thermoplastic polymer that exhibits good mechanical and chemical resistance and high rigidity and toughness. A hot air dryer is beneficial in producing Acrylonitrile Butadiene Styrene (ABS). The purpose of drying the material before feeding it into the extruder is to avoid any moisture-related problems in the melt, affecting product quality.

Polypropylene (PP)

Polypropylene (PP) is a thermoplastic polymer made of propylene monomer and is one of the most important injection molding products widely used. It must be dried before molding to protect the physical properties of the plastic from degradation by moisture. This is where a hot air dryer serves its purpose. Its properties include partially crystalline and non-polar, but it is slightly harder and more heat resistant.

What Are The Main Parts Of a Hot Air Dryer?

Several parts make up a hot air dryer. The main parts of the hot air dryer include:


The hopper is a conical vessel used to store raw material (powder) where this material is being dried with hot air further The Hopper is one of the important working parts of dryer equipment. It has a very large influence on the operation of the equipment and effective reduction in energy consumption.

Ambient Air Filter

In a Hot air dryer, the air is passed through the filter to remove all the moisture content, dust, and smoke particles. The ambient air drawn by the blower is pre-filtered to ensure consistent, clean conditions and low turbidity at the process level. Easy to replace and clean, this filter will also decrease maintenance costs by extending motor life and keeping your dryer running smoothly.

Air Blower

In Hot Air Dryer, Air Blower plays an important role in forcing the air throughout the system and in uniform distribution of heat all over the surface area to be dried. It comprises a fan driven by a motor. The blower ensures high-quality dried end products.

Air Heater

An Air heater is a device used to warm the air in a hot air dryer. Air Heater is an important source used for heat supply for other components, and also it is directly related to the drying capacity of hot air dryers. The air heater uses a heating filament powered by electricity, and you can control the temperature of the heating filament, thus controlling the temperature of the air. The specifications vary for different models. You can choose one just depending on your needs and requirements. If you have a greater production capacity, you can choose a hot air dryer with greater drying capacity to cope with rising needs.

How LCD Display Of Hot Air Dryer Provide You With Visible Controls?

LCD Display is a screen to display information such as setting temperature & time, adjusted settings and estimated drying time, remaining drying time, and other programmed functions.

LCD Display consists of a wide range of visible control over panels. Most importantly, it gives you a direct visual perception of the dryer’s status and is very easy to use during operation.

What’re The Applications Of The Hot Air Dryer?

Several industries make use of hot air dryers. These industries, along with their applications, are as follows:


What Is The Difference Between Hot Air Dryer And Dehumidifier?

Hot air dryers and desiccant dehumidifiers are two important machines used in plastic.

A hot air dryer circulates the hot air throughout the material using a heating filament. On the other hand, a dehumidifier absorbs the moisture from the circulated ambient air throughout the material.

Dehumidifiers use desiccant material that has great water capacity, like silica gel. Some manufacturers make dryer models by combining the function of a hot air dryer and a dehumidifier to increase drying efficiency.

Which Plastic Industry Processes Require Hot Air Dryer?

The main processes include:

Injection Molding

Injection Molding is a manufacturing process for producing parts from thermoplastic and thermosetting plastic materials. It works by injecting heated material into a mold to form the desired shape.

Plastic Extrusion

Plastic extrusion consists of a raw plastic material, called resin, being melted and formed into a continuous profile. The extrusion process involves heating the material and then pushing this softened material through a die. Extrusion produces pipe/tubing, weather-stripping, fencing, deck railings, window frames, plastic films and sheeting, thermoplastic coatings, and wire insulation.

In the plastic industry, the resin can be affected by moisture. In that case, the resulting product may have a plethora of surface problems, including but not limited to short shots, air-entrapped bubbles, sink marks, brittleness, and surface abrasion.

How Hot Air Dryer Boost Energy Efficiency And Productivity?

Energy efficiency and productivity play critical roles in industrial processes with drying technology, the moisture content of the industrial product is a key factor that determines the quality. The higher the moisture content in the industrial product, the poor will be its quality.

Thus, it is important to remove moisture from it to obtain good quality industrial products and make them best suitable for consumption. A hot air dryer here serves this purpose.

The double-insulated hopper and low energy consumption design make it possible dry material quickly and efficiently.

How Hot Air Dryer Contributes To Evenly Drying?

Even drying is important for most plastics to create uniform shrinkage during the manufacturing process. This helps prevent warpage and distortion in the finished product.

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