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Thin Film Coating Blog

Browse our blog to learn more about thin film and conformal coating processes, material, and application. Find out more about HZO and how our solutions can help your market.

transparent polymer coating on a piece of glass

Transparent Polymers - Applications, Material Selection

Transparent polymers offer optical clarity and the ability to transmit light. With various applications across various industries, these polymers have gained popularity for their..

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What is Parylene Coating Used For? Is it Right For My Project?

For decades, Parylene coatings, including Parylene C, Parylene F (VT-4), and Parylene N, have been trusted to enhance the reliability and performance of printed circuit boards and..

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Developing Health Wearable Devices That Work in the Real World

Smart wearable medical device designers must create flexible, lightweight, low-profile, comfortable electronic products that enable constant, real-time data transmission. The data..

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Parylene chemical formula on a dollar bill

How Much Does Parylene Coating Cost? - All Things Considered

Parylene coatings are known for robust protection from liquids, corrosion, chemicals, and strong electrical activity at a fraction of the thickness of alternative coatings, such..

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How To: A Wearable Device Design That Consumers Actually Want

Wearable devices provide insight and convenience to consumers through activity tracking and biometric data that they can easily access through a wearable app. But many wearable..

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IoT - Coating Consistency is Key

IoT sensors aggregate and send data to IoT dashboards, simplifying critical, complex decisions quickly. One key area where this is particularly true is the utilization of sensor..

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Solving Weather & Water Challenges For Smart Farms

It’s a Small World, After All The world’s population is projected to reach 8.5 billion by 2030, an unprecedented increase approaching fast. This looming surge will compound our..

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Rakuten Kobo Chooses HZO | Waterproof Next Generation Ereader

Consumer requests for waterproofing made possible with HZO Technology Draper, UT – August 17, 2016 – HZO Inc., the total solutions leader in liquid and environment protection..

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Record-Breaking Sea Kayak Journey Around Ireland

A few months back, we were contacted with news of an amazing man in Ireland who was going to attempt to break a world record- so we jumped at the chance to do our part in..

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Transparent Polymers - Applications, Material Selection

September 14, 2023 / by Mallory McGuinness-Hickey posted in Protection Capabilities, Coating Properties, Thin Film Applications, Value of Coatings


Transparent polymers offer optical clarity and the ability to transmit light. With various applications across various industries, these polymers have gained popularity for their unique properties and versatility. Common transparent polymer types include acrylics, polycarbonates, parylenes, and polyurethanes. The molecular arrangement and morphology of transparent polymers play a crucial role in their transparency. Transparent polymers typically comprise transparent monomers that polymerize to form a solid material. A uniform and amorphous structure is of paramount importance in achieving optical clarity.

Read about refractive index, another optical property.

Applications of Transparent Polymers in Various Industries

Optics and Optical Devices

Transparent polymers are extensively used to produce lenses, optical fibers, LEDs, and displays. Due to their excellent optical clarity and refractive properties, these polymers contribute to the functionality and performance of these devices. They enable the transmission and manipulation of light, essential for achieving optimal performance in optics and optical devices.

Coatings and Films

Transparent polymer coatings and films are widely used for various applications, including protection, durability, and aesthetic enhancement. These coatings and films are applied on glass, metals, and electronics surfaces to provide a protective layer while maintaining transparency. Transparent polymer coatings and films also resist scratches, chemicals, and UV radiation.

Renewable Energy

They play a significant role in the fabrication and encapsulation of solar panels. They are transparent encapsulant materials that allow sunlight to be absorbed and transmitted to the photovoltaic cells within the solar panels. Transparent polymers help maximize the efficiency of solar panels by ensuring optimal light absorption and transmission.

Biomedical Applications

These polymers are extensively used in biomedical imaging, drug delivery systems, and tissue engineering. They enable clear visualization in imaging techniques and provide a platform for developing advanced drug delivery systems.

Displays and Electronics

Some of these polymers play a crucial role in the development of touch screens, flexible displays, and transparent conductive films used in electronics. They enable light transmission while providing electrical conductivity, making them essential components in the construction of displays and electronic devices. They also contribute to the production of sleek and high-performance electronic devices.

Coating Material Selection

Transparency, durability, and versatility make these polymers ideal for numerous applications. Transparent polymers enable technological advancements and enhanced user experiences from optical lenses to display screens. If you require this type of coating material for your product design and would like to speak to an engineer, HZO can help. Reach out today. Or, you can stay and read more about coating properties, including thermal conductivity, linear coefficient of expansion, and glass transition temperature

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What is Parylene Coating Used For? Is it Right For My Project?

June 6, 2023 / by Mallory McGuinness-Hickey posted in Parylene, Thin Film Applications, Value of Coatings


For decades, Parylene coatings, including Parylene C, Parylene F (VT-4), and Parylene N, have been trusted to enhance the reliability and performance of printed circuit boards and electronic components within critical industries and applications. Parylene films boast superiority in barrier properties and uniform coverage with a capacity to perform at comparably minimal coating thicknesses compared to conventional conformal coatings (liquid coatings).

Polymerized and deposited onto components at around room temperature by a chemical vapor deposition (CVD) process, Parylene coatings are free of defects and pinholes, have high purity, and are ideal for applications where reliability and performance are priorities.


What is Parylene Coating Used for? Useful Parylene Properties

Parylene is widely used due to various beneficial properties, including exceptional resistance to moisture, chemicals, and corrosion. Parylene is biocompatible, has beneficial optical properties, and offers additional value with impressive dielectric strength. Maintaining performance through high-temperature cycles and good thermal performance are also valuable attributes.

To see the specific properties of Parylene, you can view and download the HZO Parylene datasheet below. HZO Guardian Plus™ is the Parylene C offering, and HZO Guardian Zero™ is the Parylene N coating solution suitable for halogen-free applications.


Common Parylene Applications



Parylene is used in a wide range of industries, including:

Medical devices – As an FDA-approved material, Parylene has long been trusted with mission-critical medical applications, such as implanted devices. However, more medical wearable manufacturers are implementing Parylene to yield high reliability for devices such as hearing aids, CGMs, and trackers.
Industrial – Parylene’s properties are ideal for protecting applications in harsh industrial environments. Parylene can enhance the reliability of HVAC and oil and gas sensors, smart meters, and more.
Consumer Electronics – Parylene has become more widely used in electronics such as hearables, wearables, and smart home devices.
Automotive – Pinhole-free Parylene coatings enhance the reliability of automotive components, including EV batteries, ECUs, and ADAS components.


Bottom Line – Is Parylene Right for My Application?

Should you use Parylene for your next project? It is first necessary to ask yourself how much reliability and performance matter to answer this question.

When product designers have to be sure their electronics will work when needed, Parylene is worth considering. Additionally, Parylene coatings may be your best bet when reliability and lightweight protection are mandated. Some markets, such as aerospace and automotive that must minimize weight in every instance to support fuel efficiency may benefit from ultra-thin Parylene coating.

Some products do not require such strong barrier properties and corrosion resistance. It’s not necessary to ruggedize all devices. Doing so for products intended to be disposable would raise costs for the manufacturer and the consumer, delay the release of new products, and wouldn’t serve a purpose. The added cost of enhancing the reliability of disposable electronics that rarely contact harsh environments wouldn’t be cost or time-effective.

So, while it is not always necessary or even advisable to attain critical levels of reliable protection – when it is, Parylene coatings are the best defense.

Watch the webinar about Parylene’s proven corrosion resistance.



Parylene Services with HZO

parylene coating equipment


HZO is a Parylene service provider focusing on driving down costs associated with Parylene coating and increasing coating efficiency. While Parylene was once associated with only mission-critical applications such as military or aerospace, we have democratized the Parylene process for our customers of all industries. Our custom-built Parylene coating equipment reduces time to market and improves throughput and turnaround time so that virtually any industry can benefit from superior protection.

We also have industry-leading Parylene masking automation and expertise with Parylene removal

Contact us if you are considering Parylene for your project and want partners with industry knowledge and domain expertise.

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Developing Health Wearable Devices That Work in the Real World

November 5, 2021 / by Mallory McGuinness-Hickey posted in Thin Film Applications, Value of Coatings


Smart wearable medical device designers must create flexible, lightweight, low-profile, comfortable electronic products that enable constant, real-time data transmission. The data is critical, medical in nature, with the potential to save lives. Considering these challenges, it is easy to acknowledge that wearable wireless medical devices are difficult to design, and the process is iterative.

Health wearable environments are often harsh; therefore, their packaging and protection play a critical role. Electronic and mechanical requirements are equally vital and must be adequately protected. If the medical wearable isn’t functional, it won’t sell. As such, many engineers feel that the overwhelming design concern for these products comes down to packaging and protection.


Two Critical Medical Wearable Design Challenges to Consider When You Think About Protecting Electronic Components

Whether you feel that packaging and protection is a priority or not, the measures you take to ensure your wearable medical device technology is sufficiently resilient can affect two other critical wearable design challenges.

1. Component Miniaturization and Space Optimization

Bulkier, larger, wearable medical devices were initially developed for clinical environments, but as telehealth trends continue, medical wearables are now worn outside the hospital. This change in context requires a more compact, comfortable product with lighter-weight, smaller components and a need for enhanced design flexibility. Space optimization is an essential design consideration as various technologies and provisions for more communication circuits must be incorporated – within a tighter footprint.

2. Signal Integrity

Wearable medical tech requires comfort, aesthetics, and ease of use. Still, the primary purpose of the technology is to relay patients’ health data accurately and quickly to healthcare providers, making high signal integrity an integral goal. Additionally, these devices require bidirectional data streams, so informational flow is essential too.


When Design Priorities Clash with Electronic Protection Methods

Legacy protection and packaging methods used in the past to bolster reliability can interfere with other design efforts. For example, highly customized enclosures incorporating many seals can be too cumbersome for consumers’ comfortable, compact devices. Similarly, conventional conformal coatings often require thick layers of protection that can impede signal integrity.
Unfortunately, medical wearables must dependably operate when worn on the body, requiring protection from drops, vibration, moisture, corrosion, humidity, perspiration, sterilization, and many other damaging environmental elements. This need is non-negotiable and can incur costs associated with warranties, recalls, liability, and product returns when unmet.

Download the HZO Parylene datasheet.


Consider Parylene to Improve the Design of Medical Wearable Products


HZO focuses on solving product design challenges and provides an alternative material solution to conventional coatings and seals that can provide superior protection without impeding signal integrity, comfort, or miniaturization. Whether used with customized enclosures as redundant protection or alone, our Parylene coatings offer the required protection while enabling you to meet other design goals.


Protection Capabilities

Considering environmental hazards ahead of time can enhance material choice, and there are two types of environments to consider. The outside environment can present challenges such as humidity, submersion, pollution, cleaning fluids, corrosive liquids and gases, and the human body, which includes perspiration and other bodily fluids. Sweat is very slippery, allowing for ingress through mechanical seals, and humidity is another challenge for this method, as it can also enter and begin corroding components. Additionally, one environment can affect the other. For example, humid climates may produce more sweat and make skin dewier.

Water vapor transmission rates (WVTR) can aid in predicting coating behavior in high-moisture environments, offering help in the material selection process. The chart below illustrates the WVTRs of Parylene compared to other conformal coatings. The lower the WVTR, the better.


Polymer Gas Permeability at 25 °C, (cc·mm)/(m2·day·atm) WVTR,(g·mm)/(m2·day)
N2 O2 CO2 H2 H2S SO2 CI2
Parylene C 0.4 2.8 3.0 43.3 5.1 4.3 0.1 0.08
Parylene N 3.0 15.4 84.3 212.6 313 745 29.2 0.59
Parylene F (VT-4) 16.7 0.28
Epoxy (ER) 1.6 4 3.1 43.3 0.94
Polyurethane (UR) 31.5 78.7 1,181 0.93
Silicone (SR) 19,685 118,110 17,710
Ref.: Licari, James J. Coating Materials for Electronic Applications – Polymers, Processes, Reliability, Testing. William Andrew Publishing, 2003 and various companies’ literature.


Watch Dr. Sean Clancy’s webinar on proven methods for protection from corrosive environments.


Parylene is also known for strong submersion protection, and HZO Parylene has been tested beyond 1,000 hours of submersion. As Ingress Protection (IP) claims can influence consumer purchasing behavior, our coatings offer value. Our tested, proven solution can meet any IP claim without the need for excessive enclosure customization and subsequent trips to the lab for testing.



Our Parylene conformal coatings have passed the IPC CC-830C test at 50% of the film thickness of conventional conformal coatings. The data prove that our coatings can provide as much – or more – flexibility, fungus resistance, flammability, dielectric withstanding voltage, thermal shock, moisture, and insulation resistance at a fraction of the mass.
With thinness ranging from 2-50 microns, Parylene still outperforms other coatings regarding corrosion resistance, ensuring that you can produce robust, dependable medical products that can still be miniaturized.

Additionally, the thinness of the coatings ensures reliable signal transmittance will not be a problem.


How HZO Does Parylene Differently


Image of low cost Parylene equipment


Parylene conformal coatings come in various types, including Parylene C, Parylene N, and Parylene F (VT-4). The coating is superior in uniform coverage, barrier properties, and performance at comparably thinner films, with less stress on mechanical structures and virtually no added weight. Due to its properties, Parylene has been trusted for decades in the medical industry to safeguard implants and other critical devices. As HZO has engineered processes that cut costs and allow easy ramp-up to mass production with proven Parylene coatings, it may be time to revisit this solution for less-invasive medical products.

We address the cost concerns and batch-style coating process associated with Parylene through engineering and manufacturing solutions – we can rise to mass-scale production within a specified budget or deadline. Our throughput can be two times faster than the industry standard with our in-house designed equipment, tested processes, and chemistry.

Proprietary equipment with optimized cubed chambers can house more substrates and components than any other Parylene supplier, decreasing turnaround time, improving throughput, and decreasing costs associated with coating runs. The chambers are larger in size, but the cubed shape also allows for high loading density so that not as much surface area is lost. The numbers of parts coated for medical devices vary, but HZO’s manufacturing process allows for efficient high throughput. For reference, around 10,000 – 20,000 hearable device components or batteries may be coated in a single batch.

Our engineers are here to help you meet product requirements and prepare your medical wearables for long-term business success. Their prescriptive solutions can allow you to achieve the functions and features your product must have to offer a successful outcome. If you have questions for our team or would like a no-obligation DFM consultation, contact us today.

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How Much Does Parylene Coating Cost? - All Things Considered

October 15, 2021 / by Mallory McGuinness-Hickey posted in Parylene, Value of Coatings



Parylene coatings are known for robust protection from liquids, corrosion, chemicals, and strong electrical activity at a fraction of the thickness of alternative coatings, such as acrylics, epoxies, silicones, and urethanes. Additionally, Parylene is biocompatible, with beneficial optical properties, and delivers superior protection at 50% thickness of conventional coatings, such as acrylic conformal coating or epoxy. However, the perceived cost of Parylene dimer and Parylene labor costs, compared to other conformal coatings, can give design teams hesitation as they consider incorporating high-reliability protection into their project.  

Read about what Parylene is used for


Is Cost-Efficient Parylene Possible?


Despite its proven performance, many perceive Parylene coating as challenging and expensive to apply. Therefore, one assumption is that it is only appropriate in extreme mission-critical situations, such as military, medical, or aviation applications. Other common misconceptions about Parylene include the following:

  • Reworking and removing Parylene is impossible
  • Parylene coating equipment is too expensive and complicated to use
  • Masking is too complex and time-consuming to bother with
  • CVD coatings (chemical vapor deposition) entail long batch times leading to higher labor costs and low throughput

Although these assumptions are unfounded, it is a fact that Parylene coating is typically the most costly of all conformal coating options. As a result, it's important to choose a partner who can work within your budget constraints and assist you in estimating potential expenses.


How to Calculate the Cost of Parylene


HZO capital equipment being used to lower Parylene coating cost


At HZO, we have crafted processes and procedures to lower the costs of the Parylene coating processes. However, three factors are pertinent to the price regardless of whom you work with.


Parylene Type


Common varieties, such as Parylene C and Parylene N, are less costly in raw coating material known as Parylene dimer. “Specialty types” such as Parylene-AF4 will cost more but will enable better performance in terms of UV and heat resistance. A consultation with a Parylene conformal coating services provider, such as HZO, will help you determine which Parylene type is most suitable for your project.




Masking can be more complex with Parylene coatings, resulting in increased labor. However, altering the design of your product can make it easier to coat and mask, reducing associated costs. HZO has industry-leading automated and semi-automated masking and demasking equipment, simplifying the process and reducing expenses should you choose to work with us.


Quantity and Size of Objects that Require Coating


With Parylene, the objects you need to coat are placed into a vacuum chamber as part of the chemical vapor deposition (CVD) coating process, and each coating run will have a fixed cost. However, you can optimize the number of components coated in each run to lower the coating cost per item. Meanwhile, we have built proprietary coating equipment that can house more items at once per coating run than any other Parylene company in the industry, minimizing costs per coating run.


Other Critical Considerations When Evaluating Parylene’s Price


Aside from considering upfront costs, to accurately assess Parylene’s coating expense, you must consider the coating’s value in terms of performance to preserve product function over time. In other words, the total cost of ownership is a critical consideration – upfront coating expense cannot fully measure value over a product’s life cycle. Parylene’s superior conformality and protection capabilities dramatically reduce field failures, warranty costs, and downtimes.

When you take the long-term view, the productivity and warranty savings that Parylene provides over time can make it the most economical coating option. There are other savings to consider when evaluating the price of conformal coatings, such as manufacturing costs. Conventional coatings entail cure cycles, VOC emissions, toxic byproducts, flammability, waste disposal, and health concerns. Parylene does not raise these safety and sustainability concerns as an environmentally friendly process.

Finally, investing in Parylene, with its exceptional dielectric strength, chemical and moisture resistance, and stress-free encapsulation, can substantially reduce the TCO to ruggedize components compared to other options.  

Want to ensure HZO Parylene meets your specifications?


HZO Parylene Conformal Coating Services


If you are interested in Parylene coatings and want to evaluate upfront costs and potential savings, contact one of our experts for a no-obligation DFM consultation.

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How To: A Wearable Device Design That Consumers Actually Want

March 20, 2021 / by Mallory McGuinness-Hickey posted in Thin Film Applications, Value of Coatings, Resources


Wearable devices provide insight and convenience to consumers through activity tracking and biometric data that they can easily access through a wearable app. But many wearable product designers have focused too much on producing functional devices without emphasizing the humans that wear them enough. This tendency could be to the detriment of user experience, limit user interaction, and make consumers less likely to purchase from your company again. Here are three quick tips on designing a wearable device that addresses human issues: discomfort and inconvenience, display issues, and lack of ruggedization for real-world usage.


1. Learn How to Make Wearable Technology Truly Wearable



Wearable tech can be challenging for design engineers because the body moves constantly, and humans want to move without constriction. Therefore, designing small, light, and comfortable wearables should be a priority.

For this reason, it is a good idea to begin the design process with a human factors and ergonomics analysis. This scientific discipline seeks to understand and optimize interactions among humans and systems to improve both system performance and the well-being of humans.

Consumers are likelier to wear devices with thinner, smaller, rounded form factors that lay flush on the body, applying minimal pressure. To ensure your product will be comfortable, test usability factors with real users and determine how easy and comfortable it is to move while wearing your product. Don’t forget to consider people’s different body sizes and types. For example, our customer Nike offered their FuelBand in several wristband sizes that the consumer would choose during the purchase process.

Finally, remember to design for every aspect of the use cycle, such as cleaning, bathing, showering, and leisure activities. Make an effort to be conscious of when and how humans clean their wearable devices so you can create a usable, convenient, easy-to-clean device consumers will want to use. Remember that users will not want to remove their devices during routine activities such as bathing and showering (and may not take off their wearables before swimming or entering a sauna), and accommodate this in your product design. The more convenient it is to use your product, the more consumers want it.


Watch our video series about designing reliable consumer electronics devices.


2. Consider the Display On-Device and What it Means for User Experience



To determine the right display for your wearable, ask yourself about the level of interaction required with the wearable. Wearables without display afford more design flexibility, are cheaper, and are simpler to produce. However, no available visual communication with the wearable will limit the level and scope of human interaction with it.

Minimal output displays portray selected information critical to the wearable experience. This type of display is one-directional, so the user can view it but cannot enter any input, limiting interaction. Another option is a full display, which allows for strong device interaction and a wider feature set. Determining which type of display is most appropriate for your users is an important decision that, unfortunately, may entail an aesthetics-functionality trade-off.

No matter which display you choose, you should expect and design wearables that will endure connectivity problems. Try to integrate some core functionality in your product’s offline mode when planning for your wearable UI. At a minimum, ensure the product explains what is happening to the user by incorporating wearable alerts when there is no internet connection to avoid confusion. If you choose a wearable with no display, this could be indicated through the mobile app.


3. Learn How to Design a Wearable Device for the Real World



Designing devices worn on the body can be complicated because they must reliably work in variable operating environments. In other words, they must go where humans go. Humidity, submersion, harsh weather, and corrosive exposure threaten wearable PCBAs. Don’t make the mistake of simply ensuring a device can pass reliability tests in the lab but not designed for the real world. Typically, consumers use Ingress Protection (IP) standards to guide their purchasing decisions, so achieving a certain level of water resistance is necessary.

Download our IP checklist.


Conventionally, product designers have used seals to do this, but this method may not focus as much on user experience as it should. Humans frequently move, exposing these devices to vibration, which can dislodge seals and leave wearables unprotected from corrosion.

Another option is conformal coatings for wearable moisture resistance and corrosion protection. These polymeric films are applied directly to the circuitry as a barrier against many environmental threats. However, wearables have minimized form factors and require these coatings to apply thick layers, which may be too bulky and heavy, causing discomfort and inconvenience.

These legacy methods are often appropriate and do have their place. However, if you are placing more emphasis on users to improve your product experience, it might be worth considering Parylene conformal coatings. HZO’s Parylene can provide protection that meets or exceeds the corrosion protection of other conformal coatings at 50% thickness.


Visit our Consumer Electronics market page


The chart below describes Parylene thickness and the corresponding standards and IP protection levels they meet:


Table 1: Parylene Thickness, Relevant Standards, and IP Protection Levels
Thickness(μm) Relevant Standards IP Protection Level
0.1 to 5 UT Type in IPC-CC-830C IPX3/IPX4
5 to 12.5 UT Type in IPC-CC-830C IPX4/IPX7
12.5 to 25 IPC-CC-830B IPX7/IPX8


Parylene Conformal Coatings for Wearables From HZO


As a proven method trusted for decades in mission-critical applications, Parylene eases many design headaches and addresses the user-focused issues above. As it provides robust protection at a fraction of the mass of legacy methods, you can make ruggedized wearables that are also truly wearable. Parylene’s superior chemical resistance properties allow your users to clean their products throughout the entire product life cycle safely. Additionally, using Parylene instead of seals can make it easy to design and produce wearables that meet finish, style, longevity, and reliability expectations, leading to consumer purchases.

It is possible to minimize offline disruptions because, unlike the other thick conformal coatings and seals, Parylene is applied in thin layers, facilitating RF signal transmittance.

When you work with HZO, our engineers will create a coating solution around your needs that easily fits into your production. From DFM services to QA, our team of experts will walk you through every step of the protection process, eliminating headaches and simplifying your process. If you want to discuss your project with our team, contact us today.

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IoT - Coating Consistency is Key

September 25, 2020 / by Mallory McGuinness-Hickey posted in Parylene, Coating Process, Coating Properties, Value of Coatings



IoT sensors aggregate and send data to IoT dashboards, simplifying critical, complex decisions quickly. One key area where this is particularly true is the utilization of sensor data for predictive maintenance, a process that reduces downtime and lowers the total cost of ownership. Myriad other applications incorporate these “smart” sensors too.

Today, IoT sensors are ubiquitous, touching almost every aspect of life. Gas pressure sensors monitor pressure changes in oil, energy, and utility applications. Photoelectric devices (photo sensors) are now common in the consumer electronics vertical. Sensors are responsible for temperature monitoring, a typical use case for warehouse and inventory management, and HVAC systems monitoring.

Accelerometers detect subnormal industrial machine applications, while ultrasonic flow meters are coupled with IoT modules to send data about smart metering to a remote location. Moisture sensors have been critical in recent advances in smart farming, allowing for constant soil health monitoring. In the automotive sector, tunneling magnetoresistive sensors (TMR) are an increasingly popular way to measure mechanical displacement. And Particulate Matter sensors detect pollution in the industrial landscape and smart cities.


The chemical vapor deposition (CVD) process used to deposit Parylene conformal coatings can efficiently accommodate these complex surfaces. Parylene’s usefulness is primarily founded upon its ability to cover PCBA configurations with exposed internal surfaces, sharp edges, flat surfaces, points, and crevices with consistent coverage free of voids.


HZO PRO750 Parylene Coating Equipment

HZO PRO750 Parylene Coating Equipment


The Parylene Deposition Process – Consistent Coverage

Rather than dipping, spraying, or brushing pre-formulated layers onto PCBAs and other components, Parylene’s application method synthesizes the protective film in-process. This deposition system comprises a series of vacuum chambers that produce Parylene vapor, pyrolyze the vapor, then deposit the vapor as a polymer sequentially.

During the CVD process, gaseous Parylene penetrates the layers of a PCBA. Its vaporous consistency surrounds all areas as it builds coating protection along the exterior. The coating layers are substantially thinner than those provided by liquid conformal coating materials, enhancing reliability and functional versatility.

It has repeatedly been demonstrated that CVD is valuable for thin-film deposition on irregular PCBAs. CVD's Conformal layers are exceptionally uniform, even in the nanometer range. Because these coating layers are exceptionally thin, non-uniformity is minimal.


Reach out to an Expert 

Choosing Parylene conformal coating services isn’t a failsafe decision, like anything else. Problems can occur with the process and the material. This is particularly true if the wrong Parylene type is used for a coating project while another type could provide better coverage. If you need a consultation to determine if Parylene is the right choice for your project, contact the HZO engineering team today, fill out a quote form, or leave a brief message.

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Solving Weather & Water Challenges For Smart Farms

May 12, 2020 / by Mallory McGuinness-Hickey posted in Parylene, Protection Capabilities, Thin Film Applications, Value of Coatings



It’s a Small World, After All

The world’s population is projected to reach 8.5 billion by 2030, an unprecedented increase approaching fast. This looming surge will compound our current problem – more mouths to feed on a densely packed planet that isn’t growing any larger.

Even as available agricultural land shrinks and natural resources become more depleted, farmers must produce 70% more food by 2050.

Necessity is the mother of invention, especially when it comes to farming. After all, if the agricultural industry doesn’t adapt, we don’t eat. The task at hand for farmers is to produce more food with more precision while working with less.


IoT in Smart Farming: Connecting Dots

To adjust to these changes, the industry has introduced technology to agriculture, a practice known as smart farming. Intelligent devices collect and process information about emerging issues and environmental changes, enabling farmers to respond more quickly. Pulling this system together is the Internet of Things, connecting smart machines and integrated sensors to produce data-driven, data-enabled processes.

Information about the fertility of the soil, crop growth, weather conditions, and other variables can be used to track business status, equipment efficiency, and employee performance, offering valuable insights that can be used to optimize agricultural performance. As a result, work, waste, and risk are reduced, while cost management and capabilities are enhanced.


Hardware Security Implications in Smart Agriculture Pose Problems

While agricultural devices hold promise, no matter how smart the software may be, the success of the smart farming system is contingent upon how physically secure the hardware is. This is problematic for several reasons:

  • Without adequate protection, sensors can easily be damaged by wear and tear caused by constant exposure to drops, falls, heavy winds, or pounding rain.
  • Typical weather conditions, such as high temperatures, pollutants, condensation, and humidity, can cause immediate failure by a short circuit or a long, unpredictable shutdown due to corrosion.
  • To operate reliably, farm managers need to access information consistently. A single sensor failure could lead to a catastrophic period of downtime at worst. At best, failing devices create the need for continuous maintenance and replacement.
one phone underwater that is still working because of HZO protection and another that is dead because of water damage


Protecting Smart Farming Equipment Has Never Been This Important

The onus falls on the agricultural industry to achieve more precision and a higher level of performance as it struggles to meet the demands of our population. To farmers, physically robust hardware is more important than ever.

Weather stations located across fields offer insight into climate conditions, the optimal choice of crops, and potential actions that, when taken, could improve farming capacity. Meanwhile, sensors attached to cattle are helping farmers understand changes in health and activity levels for each animal and, collectively, the status of the entire herd.

Crop management devices produce data about crop health, precipitation, and temperature fluctuations, allowing farmers to mitigate risk and increase yield proactively. This kind of cognizance is gleaned from smart farming sensors, provided these devices can predictably perform in an unpredictable environment.


Overcoming Challenges to Device Security In Smart Farming with Parylene Thin-Film Coatings

Considered a “best-in-class” conformal coating in electronic, industrial, medical, and engineering industries, Parylene is a thin-film electronic protection solution that can address agricultural challenges. Applied with a vacuum deposition technique, Parylene coatings achieve dependable coverage free from imperfections like cracks or voids. The coating uniformly conforms to device topography, completely penetrating spaces as narrow as <0.01 mm.

Additionally, Parylene has good heat endurance. For example, Parylene C can offer durable environmental protection for ten years at 80°C. Providing mission-critical protection at thicknesses on the micron level, Parylene can endure temperatures and weather conditions that traditionally have been hurdles for smart farming devices.

If you have been tasked with designing or manufacturing smart farming devices that the industry can depend on, Parylene is an excellent way to achieve critical reliability. Please contact us today if you’d like to learn more about our Parylene solution.

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Rakuten Kobo Chooses HZO | Waterproof Next Generation Ereader

August 17, 2016 / by Ryan Moore posted in Value of Coatings



Consumer requests for waterproofing made possible with HZO Technology

Draper, UT – August 17, 2016 –  HZO Inc., the total solutions leader in liquid and environment protection technology, announced its recent collaboration with Rakuten Kobo to protect its latest eReader, the Kobo Aura ONE. The HZO Protected™ Kobo Aura ONE is rated to IPX8, making it a versatile device that enables people to read in more places than ever.

HZO’s innovative thin-film coating solution will provide the Kobo Aura ONE with unmatched protection from damage caused by liquids and moisture without the need for bulky cases or mechanical seals, making Kobo’s new eReader sleeker, lighter and safe to use anywhere, including the beach or even in the bath.

Kobo conceptualized the Kobo Aura ONE with the input of its most avid readers. Of all their requests, water protection made the short list of the most desired features. With the customer in mind, Kobo answered the call for liquid protection, turning to HZO to make their customers’ desires a reality.

HZO collaborates extensively with product designers, engineers, and OEMs to integrate its protective technology into manufacturing. “An HZO Protected device lasts longer and performs better due to the internal application of HZO’s innovative protection layer,” said Max Sorenson, Chief Technology Officer at HZO. “Our transparent coating is microns thin, adds virtually no additional weight, and offers unmatched environmental protection.” This unique technology, combined with HZO’s collaborative engineering, made possible the IPX8 capabilities of the Aura ONE.

HZO enables OEMs and manufacturers by combining collaborative engineering with its patented manufacturing processes and its unique Parylene-based coating to protect electronic devices and components of all sizes and levels of complexity. OEMs can offer superior environmental, liquid, and submersion protection without compromising their devices’ design or overall performance.

The HZO Protected Kobo Aura ONE will be available globally in September; for more details:


About HZO:

HZO is a technology solutions and licensing company that provides electronics manufacturers and device makers in a range of industries, including consumer, medical, military, and industrial, with thin-film protection against damage caused by liquid submersion, corrosive environments, humidity, sweat, dust, and debris. With a scalable end-to-end solution that supports mass volume production and a technical team dedicated to innovation and customer success, HZO’s patent-protected solution enables product design freedom, delivers product differentiation, and goes beyond the boundaries defined by electronics testing standards like IPX8.

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Record-Breaking Sea Kayak Journey Around Ireland

June 4, 2012 / by Ryan Moore posted in Value of Coatings



A few months back, we were contacted with news of an amazing man in Ireland who was going to attempt to break a world record- so we jumped at the chance to do our part in supporting him on his amazing journey.

Today, June 4th, Adventurer Mike Jones of Cobh, Co Cork, Ireland, is setting off in his 18-foot long sea kayak in an attempt to paddle around the entire country of Ireland in a mere 35 days, hoping to not only break the current world record in the process but also raise €10,000, (which equals about $12,000,) Children’s Sunshine home and Laura Lynn house- both organizations that care for children with life-limiting conditions.

We were lucky enough to be able to send Mike one of our favorite toys for his adventure- an HZO Protected iPod Nano to keep him company while he paddled. He was excited to test it with a few barrel rolls in his kayak and test whatever the Atlantic Ocean and the North Sea could dish out.

Mike will have a tracking beacon on his kayak, so hopefully, we will receive updates on his progress as his journey progresses. We wish him luck and will keep you posted on his progress!

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