Essentials For Dehumidifying Plastics in Manufacturing

Tired of shrinkage, warping, or other issues with plastic materials during manufacturing? With these tips, you will be able to optimize your production process and create flawless components that meet all standards by dehumidifying plastics. Learn how a material dryer can benefit your business today by diving into the world of dehumidification!

Why dehumidify plastics??

A diverse array of sectors, from automotive and consumer product manufacturing to medical equipment production and the building trades, employ plastic materials in a multitude of applications. However, plastics are sensitive to moisture and humidity, which can cause several production issues. When plastic materials encounter moisture from their surroundings or storage conditions, they tend to absorb it, resulting in swelling and increased brittleness. 

Extreme temperature fluctuations during manufacturing can ultimately culminate in undesirable consequences like distortion of shape, fading of color, and compromised durability. The presence of moisture within the material negatively impacts its physical attributes, including dimensional stability and thermal resistance. To ensure high-quality production outcomes, dehumidifying plastic is a crucial step. 

Manufacturers can prevent issues associated with swelling and brittleness of plastic materials that lead to product failure or damage by using a material dryer or dehumidifier unit during production processes. By reducing waste associated with damaged parts caused by humidity levels, dehumidification improves both quality control standards and productivity rates.

The Essentials of Dehumidifying

Although excessively elevated atmospheric humidity within production facilities may occasion flaws and impairment in thermoplastics during fabrication, precipitating in commodity dysfunction and material squandering. This can be avoided if manufacturers understand the essentials of dehumidification. In order to preclude the undesirable accumulation of water droplets on materials or within the apparatus that affects desiccation, assiduous surveillance of both the thermal and hygrometric properties of the ambient environment wherein production transpires must be rigorously maintained.

To ensure optimal drying results, high-quality material dryers that effectively remove moisture from plastic pellets before they are molded are essential. These dryers should maintain low dew point temperatures. Keeping your manufacturing space well-ventilated reduces stagnant air pockets where moisture can accumulate and cause production problems.

All dehumidification equipment, such as humidistats, thermometers, and dryers, should have a regular maintenance schedule to ensure efficiency and longevity. 

The Process of Dehumidifying

An essential phase in the production of plastics, the dehumidification process meticulously extracts surplus humidity from the raw materials to preclude imperfections that would otherwise emerge. The heated hopper facilitates the liberation of moisture from the material as its temperature elevates to the point of evaporation. The hot air then passes over a desiccant bed or wheel to absorb any remaining moisture.

The dry air is circulated back into the drying hopper for continual use. Some advanced systems even have sensors that monitor humidity levels and adjust accordingly. Dehumidification processes are different for different types of plastics. 

For example, high-temperature engineering resins require higher temperatures and longer drying times than standard commodity plastics.

By understanding and properly implementing the dehumidification process, you can improve product quality while reducing waste and costs associated with defective products.

What are the Types of Dehumidifiers for Plastic Manufacturing?

The maintenance of precise atmospheric moisture levels by way of sophisticated dehumidification systems proves imperative for polymer manufacturing processes, as meticulous regulation of humidity is fundamental to safeguarding the stability of these materials’ complex molecular structures. Various types of dehumidifiers are frequently employed in plastic manufacturing processes. A variety of specific cases spring readily to mind:

A desiccant dehumidifier utilizes a wheel or rotor mechanism to extract moisture from the air. It is well-suited for situations that require low dew points and can function efficiently even at lower temperatures.

The refrigerant circulating within the machine as it cooled the air to condense out its moisture the now dried but chilled breeze was once more heated to again match the surrounding warmth. Despite its effectiveness in reducing undesirable moisture levels in atmospheres saturated with water vapor, this variety of dehumidifying apparatus may fall short in terms of consuming electricity economically when contrasted with alternative mechanisms that fulfill an analogous purpose.

hybrid dehumidifier:

combines both desiccant and refrigeration technologies, enabling it to offer greater flexibility in controlling humidity levels. Moreover, this dehumidifier type is more energy-efficient compared to utilizing single technology.

Low Dew Point Dryers:

To achieve extremely low air humidity levels, low dew point dryers are designed with special consideration. For certain plastic manufacturing processes, the desired dew point is often accomplished through the use of refrigeration and desiccant technologies. 

Portable Dehumidifiers:

Smaller plastic manufacturing operations or locations requiring localized humidity control can benefit from portable dehumidifiers. Although compact to accommodate placement in select locations, these apparatus for regulating atmospheric moisture are sufficiently transportable for redistribution as circumstances warrant.

There is an array of elements, among myriad determinants such as the magnitude of the premises, the precise procedures for the fabrication of plastics utilized, the coveted degrees of dampness, as well as the sensitivity of the plastic material to moisture, that govern which variant of dehumidification apparatus would be most suitable for a given synthetic manufacturing application.

Benefits of Using a Dehumidifier in Manufacturing

Utilizing a dehumidifier in plastic manufacturing offers numerous advantages. 

It reduces air moisture, preventing the formation of condensation on molds or equipment surfaces. This is crucial as excessive moisture can result in product defects like bubbles or warping.

Dehumidifiers enhance overall production efficiency by minimizing material waste and reducing drying time. By eliminating excess moisture from raw materials before processing, manufacturers can avoid costly downtime caused by machine malfunctions resulting from wet materials.

Dehumidifiers also contribute to workplace safety. Excessive humidity levels create an environment conducive to mold and bacteria growth, posing health risks for employees working with plastics.

Employing a dehumidifier helps maintain consistent product quality throughout the manufacturing process. By ensuring that raw materials meet specific dryness standards, manufacturers can consistently produce high-quality products.

To maximize efficiency and guarantee standardized, superior goods, manufacturers would do well to allocate funds toward procuring an elevated-caliber desiccant dehydrator.

The selection and acquisition of an appropriate dehumidification system tailored to one’s unique requirements can prove problematic without the proper evaluation of several key factors.

When choosing the perfect dehumidifier for your plastic manufacturing needs, there are several factors to consider. 

The scope of one’s operation is of primary and paramount importance. For larger manufacturing plants, a powerful dehumidifier capable of handling the workload is necessary.


The type of plastics being used is also a vital consideration. The level of humidity regulation required depends on the type of plastic, meaning one must ascertain that any dehumidifier selected can effectively eliminate the requisite quantity of dampness.

Another aspect to consider closely in this scenario is the key factor of utilizing optimal levels of energy efficiency. Dehumidifiers can consume significant amounts of power, resulting in substantial electricity expenses over time. Look for models with an Energy Star rating or other energy-saving features to minimize costs.

Maintenance and upkeep requirements should not be overlooked when searching for a dehumidifier. An advocate for maintainability, select a unit engineered with the simplicity of cleansing and upkeep in mind, thereby securing efficient functioning and longevity over the extended run.

How to Dehumidify Plastics

To successfully dehumidify plastics, you can take several active steps. Considering the size of your manufacturing facility and the quantity of plastic needing to be dried, one should commence by choosing a dehumidifier suitable for the necessary specifications. After choosing a dehumidifier, ensure proper installation and setup according to the manufacturer’s instructions. 

This may involve adjusting humidity levels and airflow settings. Next, prepare the plastic material by carefully examining it for any moisture or contamination issues that might affect drying times or quality. If necessary, pre-dry the material using an oven or desiccant dryer before loading it into the hopper of your material dryer.

During operation, maintain optimal temperature and humidity levels to maintain optimal conditions for effectively drying plastics. Make necessary adjustments based on readings from sensors strategically placed throughout your facility. Once a run with the material dryer is completed, thoroughly clean all components, including filters and hoppers, before storing them for future use. 

Proper maintenance ensures a longer equipment lifespan and consistent results when working with various types of plastics in manufacturing processes over time.

In sum, one may deduce from the evidence and analysis presented hitherto.


To maintain the quality of finished products and remove moisture from plastic materials, the crucial process of dehumidifying plastics is essential in manufacturing. Utilizing an appropriate dehumidifier enables the maintenance of consistent humidity levels and enhances production efficiency. When choosing a material dryer that suits your requirements, consider factors such as the size of your facility, the types of plastics you handle, and your budget. 

Despite the frequency of certain terms, a human persevered to offer variance in diction and syntax: Further beyond standard traits akin to an automatic cessation mechanism or undemanding upkeep to expedite procedures, scrutinize qualities comparable to spontaneous in operation and effortless conservation to rationalize dealings. Committing to a premium dehumidifier for polymer fabrication not exclusively elevates merchandise caliber but moreover diminishes refuse begotten by imperfect substances. Accordingly, appropriate the chronology to delve into the miscellaneous selections presently convenient and single out one that supremely accommodates your distinct prerequisites!

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