Protective clothing against ultraviolet rays. Sunglasses comparison

Why is ultraviolet radiation dangerous? When and how should you protect your eyes from harmful solar radiation? What lenses with a UV filter can you buy in our online store?

We begin to think about protecting our skin from the sun only with the appearance of its bright summer rays. After all, everyone has heard about the harmful effects of ultraviolet radiation on our health and many are familiar with medical “horror stories”: it causes cancer and wrinkles appear faster. Unfortunately it's true. However, not only the skin, but also the eyes should be protected from sunlight, since ultraviolet radiation is also very dangerous for them.

By the way, the position: “I see the bright sun - I remember about ultraviolet protection” is not entirely correct. Because there is a type of ultraviolet rays that is active at any time of the year: UVA (spectrum A rays). And yes, even in the harsh Russian winter, when you can’t see the sun at all for 3/4 days, and even on cloudy autumn days.

Tags contact lenses

Ultraviolet rays are electromagnetic radiation in the spectrum between visible and invisible X-ray radiation, the main source of which for people is the Sun. They come in three ranges, determined by wavelength:

• near - UVA
• medium - UVB
• distant - UVC.

Spectrum A and B rays pose a direct threat to people, since C rays do not reach the Earth's surface and are absorbed in the atmosphere. Excess ultraviolet radiation causes burns in humans varying degrees, oncological diseases, premature aging of the skin. It is dangerous for the visual organs with such troubles as:

• lacrimation,
• photophobia,
• and in severe cases - corneal burn and retinal damage.

We wrote more about the effects of ultraviolet radiation on vision in.

HOW TO PROTECT YOUR EYES FROM UV rays

To protect your eyes from solar radiation you can and should use:

• sunglasses
• regular (corrective) glasses with specially coated lenses with UV filters (for example, the Crizal brand has these and other lenses with multifunctional coatings)
• contact lenses with UV filters.

Like sunglasses and creams, contact lenses also have several degrees of protection from UV radiation, which are called classes:

• 99% UVB and 90% UVA are blocked first
• The second class filter protects against 95% UVB and 50% UVA.

On packages of contact lenses with a UV filter there is a corresponding mark, usually without indicating the class. If necessary, precise information about the lens protection class can be obtained from the manufacturer.

I would like to note that contact lenses with sun protection are not a complete replacement for sunglasses, but an excellent addition to them. After all, lenses do not protect the area around the eyes, do not save from blinding glare and do not increase the contrast of vision, as, for example, polarized glasses do.

Absolutely all ACUVUE® brand contact lenses from Johnson & Johnson contain UV filters - no other brand can boast such a “breadth” of sun protection across its entire product line. Let's look at a few examples.

Contact lenses 1-DAY ACUVUE® TruEye® - These are soft contact lenses made of silicone hydrogel, a reliable and high-quality modern material. Research results have shown that ACUVUE® TruEye® lenses do not affect the health of your eyes: the condition of your eyes remains exactly the same as before you started wearing the lenses. [I]

They are great for constant wear throughout, even the longest, day. A fruitful work schedule, then playing sports in the gym or jogging in nature, and then planning to drop by for a party with friends? And are you worried whether your lenses will withstand such a rhythm? 1-DAY ACUVUE® TruEye® - will definitely cope with this task! After all, they were specially created for everyone who prefers active, bright and interesting image life.

In addition to the moisturizing component that will prevent your eyes from experiencing discomfort and a feeling of dryness, ACUVUE® TruEye® lenses have maximum protection against ultraviolet radiation - class 1 filters. Accordingly, they block 99% of UVB rays and block 90% of UVA rays.

The replacement period for these lenses is 1 day. That is, you do not need to worry about storing and cleaning them. At the end of the day you just need to throw them away, and in the morning you will take a new pair out of the package!

Lenses ACUVUE® OASYS® And ACUVUE® OASYS® for ASTIGMATISM Designed for two weeks of wear. The unique technology of these lenses - HYDRACLEAR® PLUS - allows you to forget about dryness and keep the lenses moisturized, which means super-comfortable throughout the day. They are suitable for those who spend a lot of time at the computer, with gadgets and in rooms with dry air (for example, in the office). The excellent oxygen permeability of these lenses allows the eyes to breathe freely. A radiant look and constant comfort - what more could you want from lenses?

Of course, safety! ACUVUE® OASYS® and ACUVUE® OASYS® for ASTIGMATISM have a class 1 UV filter, like ACUVUE® TruEye®, i.e. Blocks over 99% UVB and over 90% UVA .

The advantage of these lenses is that they are more economical in price than daily lenses. However, routine replacement lenses require solutions, storage containers and some time to care for them.

Contact lenses are a medical product that comes into contact with the surface of the eye, and their selection should only be carried out by a specialist - an ophthalmologist or an optometrist. Therefore, although the price can be a very tempting argument in favor of purchasing certain lenses, you still need to focus only on the recommendations of your doctor.

These are beauty lenses for those who do not seek compromises between health and beauty! By highlighting the natural color of your iris with their design, they make your image brighter, your gaze more expressive, and you more confident! However, ACUVUE® DEFINE® lenses should not be confused with colored lenses, because they do not completely change the color of your eyes. There are 2 versions of these lenses on the market: with a brown tint and with a blue tint. The manufacturer states that the lenses are suitable for owners of both light and dark eyes.

In addition to charm and comfort, 1-DAY ACUVUE® DEFINE® contact lenses will also provide you with protection from harmful sun rays, thanks to the presence of a class 1 UV filter. The replacement period is 1 day, which adds points to the convenience and comfort of these lenses.

Contact lenses 1-DAY ACUVUE® MOIST® and 1-DAY ACUVUE® MOIST® for ASTIGMATISM also have sun filters. They block 95% of UVB and more than 50% of UVA rays, because... belong to the 2nd class of protection.

Contact lenses from another manufacturer, BAUSCH + LOMB, are another one-day lenses that will protect your eyes from harmful sun rays - UVA and UVB. They are made of an innovative material - HyperGelTM, combining the advantages of both hydrogel and silicone hydrogel lenses. Excellent oxygen permeability, high moisture content, High DefinitionTM high-definition optics - everything in them is created to make you feel in these lenses as if they are not even there before your eyes! 16 hours of excellent vision and comfort - that's what the manufacturer promises us.

You can choose the right sun contact lenses for you in our Ochkarik optics stores. To avoid waiting, we recommend making an appointment with a medical specialist in advance.

When writing this article, materials from the following sites were used: jjvc.ru, acuvue.ru, marieclaire.ru, gismeteo.ru, ru.wikipedia.org, bausch.ru.

[I] D. Ruston, K. Moody, T. Henderson, S. Dunn. Daily contact lenses: silicone hydrogel or hydrogel? Optichen, 07/01/2011. Pages 14-17.

Koch et al. Eyes and contact lenses. 2008;34(2): 100-105. Influence of internal wetting components of contact lenses on higher order aberrations.

Brennan N., Morgan P. CLAE. Oxygen consumption was calculated using the Noel Brennan method. 2009; 32(5): 210-254. Almost 100% of oxygen reaches the cornea when wearing lenses in daytime, for comparison: this indicator in the absence of lenses on the eyes is 100%.

In the summer we spend more time outdoors, at the same time wearing less clothing, the skin comes into more contact with solar radiation, which increases the risk of skin damage. Exposure to ultraviolet radiation on the skin is the main cause of the development of malignant skin tumors, the most malignant of which is melanoma. Over the past 10 years, the incidence of melanoma in Russia has increased from 4.5 to 6.1 per 100 thousand population. Every year this tumor affects 8-9 thousand Russians.

It is not always possible to prevent melanoma, but we can significantly reduce the risk of developing this disease.

Protection from the damaging effects of ultraviolet radiation is necessary not only during beach holiday. Protection is necessary in all situations where you spend a lot of time outdoors, especially during peak sun hours (10am to 4pm), such as gardening, boating, different types sports, fishing, hiking, mowing the lawn, walking around the city and in parks, cycling.

Protection from ultraviolet radiation.

A direct connection has been proven between exposure to solar radiation and the incidence of malignant neoplasms, including melanoma. Now it is possible to accurately assess the intensity of solar radiation and the danger of its damaging effects on the skin in a certain place at a certain time. To do this, they focus on the values ​​of the UV index (ultraviolet radiation index), which has values ​​on a scale from 1 to 11+ and shows the strength of UV radiation in a particular place. The higher the UV index, the greater the likelihood of sunburn, skin damage and, ultimately, the appearance of various malignant skin tumors.

• Skin protection with clothing.

If you plan to be in the open sun for a long time, protect your skin with clothing. There is a common misconception that any clothing reliably protects the skin from contact with ultraviolet radiation. However, it is not; It is important to pay attention both to the style of the clothing itself and to the characteristics of the fabric from which it is made.

Choose clothes that cover your body as much as possible: ankle-length trousers and skirts, T-shirts and blouses with long sleeves.

Dyed, especially with natural pigments (green, brown, beige), or dark clothes protect better from sunlight than white ones, however, they heat up more, increasing the heat load on the body. Double-layer materials double their protective properties. Clothes made of thick fabric are preferred.

Fabrics made from cotton, linen, and hemp block ultraviolet light well, but fabrics made from natural silk do not protect from solar radiation. Polyester blocks ultraviolet radiation as much as possible.

Protect your scalp by wearing a hat (hat, headscarf). Remember to protect the skin of your ears; they will be protected by the shade of a wide-brimmed hat. The skin of the neck especially needs protection; it is the least protected area of ​​the body; choose clothes with a collar that can be raised, or tie a scarf or headscarf around your neck.

Remember that clothing cannot provide 100% protection; if light is visible through the fabric, it means it is transmitting UV.

• Use of sunscreens for external use.

Use sunscreen products with a sun protection factor (SPF) of 30 or higher. It is a fairly common belief that you should only use sunscreen on the beach. However, the sun affects us all year round, and during the period of increased seasonal activity, the damaging effects of ultraviolet radiation are no less in the city than on the beach.

During hours of maximum solar activity from 10.00 to 16.00, all exposed skin must be protected by applying sunscreen. On the beach - on the whole body, in the city or on a walk - on the face, lips, ears, neck, hands. Most people use sunscreen incorrectly, using it too sparingly. The recommended amount of sunscreen per unit of skin surface is 2 mg of SPF per 1 cm of skin. For a single application of sunscreen to the skin of an adult, at least 30 ml of product is required.

Apply the protectant even on cloudy days when the sun is hidden behind the clouds, as cloudiness does not prevent the penetration of UV radiation.

Before applying sunscreen, be sure to read the included instructions, which indicate how often you should reapply it. On average, it is necessary to repeat the skin treatment every 2 hours of exposure to the sun. Many products are not moisture resistant and require reapplication after each immersion in water; increased sweating can also shorten the time of effective protection. Many fans of beach holidays find a certain pleasure in extremely long passive exposure to the sun; they diligently “sunbathe” for hours, in full confidence that they are benefiting their body and “getting healthier.” This very dangerous practice is especially loved by middle-aged and elderly people. Such vacationers should remember that even the proper use of sunscreen does not guarantee absolute protection of the skin from damage; the time spent in the open sun should be strictly limited (no more than 2 hours).

• Staying in the shade during active sun hours.

Limiting prolonged exposure to the sun is another way to avoid harmful UV exposure. This is especially true in the middle of the day, from 10.00 and 16.00, when UV radiation is overly active. A simple test helps to understand the intensity of solar radiation: if a person’s shadow is shorter than the person’s height, then the sun is active, and protective measures must be taken. Being in the shade of a beach umbrella is not complete protection, since up to 84% of ultraviolet rays are reflected from the sand and easily reach the skin.

• Using sunglasses.

While paying attention to protecting your skin, don't forget about your eyes. Melanoma of the eyes is no less common than melanoma of the skin. The risk of its development can only be reduced by using special sunglasses. It is better to use large-diameter glasses, the lenses of which block at least 98% of ultraviolet rays. Buy glasses from specialized optical stores, make sure that their lenses absorb UV at a wavelength of up to 400 nm, which means that the glasses block at least 98% of UV rays. Without such instructions on the label, the glasses will most likely not provide sufficient eye protection.

By protecting yourself from the damaging effects of ultraviolet radiation, you prolong your life.

When performing their professional duties, many specialists are faced with the risk of splashes of biological fluids, chemical solutions, small elements, and exposure to ultraviolet radiation on the organs of vision. All of this can lead to eye infection or injury. Special protective glasses will allow you to avoid this without reducing the clarity of vision. More information about medical glasses can be obtained

Scope of application

They are most widely used in dental practice, by surgeons and laboratory assistants, protecting the eyes from:

• particles and dust accompanying the process of sawing bones;
• splashes of biological fluids;
• ingress of drugs, chemical reagents;
• radiation from photopolymerizers;
• cleaning products and their fumes.

They will also be indispensable for dental technicians involved in the manufacture of dentures, those who work with lasers and quantum devices. Medical UV protection glasses are able to minimize the negative impact of UV lamps and irradiation devices on the eyes.

Main varieties

These products are available in several categories:

1. Open. They touch the face only with part of the body or frame. Externally they are quite similar to sun protection models. Increased eye protection is provided by wider temples. Designed to protect against small particles and splashes. They can be additionally equipped with a light filter, protecting against IR, UV and glare radiation.
2. Closed. They fit the entire body to the face, comprehensively protecting the eyes. Externally similar to a diving mask. Most often used when working with lasers.
3. Helioprotective. Available in open and closed versions. They are equipped with light filters, which makes them popular when working with lasers and in dentistry. Their main task is not to transmit the blue spectrum of visible radiation emanating from the photopolymerizer.

Face shields are placed in a separate category. These are screens that are quite large in area and are attached to the temples, nose pads, and headband. They protect not only the eyes, but the entire face from splashes and small particles. They can be used in combination with other types of safety glasses, respirators, and masks.

Key Features

When starting to choose medical safety glasses, you should pay attention to the parameters responsible for convenience and reliability during use:

• lenses of ordinary glasses must withstand a single impact with an energy of more than 0.6 J, and reinforced lenses - more than 1.2 J;
• environmental friendliness of materials used in the production process;
• the presence of softening pads in the temples and nasal arch;
• resistance to scratches, chips, and fogging;
• tight fit to the head even with sudden movements;
• simplicity and efficiency of putting on/taking off;
• the ability to individually adjust the size of the arms;
• high visibility.

When starting to make a choice, you need to clearly know for what purposes this accessory will be used.

Rules of care

The process of caring for glasses is quite simple. They must be periodically inspected for defects, stored in a dustproof case, and cleaned and disinfected after use. If damaged, the glasses should be replaced.

Manufacturers

If you want to buy safety glasses high quality and at an affordable price, we recommend paying attention to ROSOMZ products. You can see the range of products from this famous domestic manufacturer in the catalog of our website. You are guaranteed to find a model that suits your individual needs. All products have certificates of conformity and are covered by official guarantees.

What is the protection level of sunglasses?
What do you need to know about the light transmission of lenses in sunglasses?
Will cheap sunglasses ruin your vision?

When purchasing sunglasses, people fall into two categories:

• those who are extremely scrupulous in their choice study all the marks and icons on the labels
• and those who buy the glasses they like in the accessories section of any clothing store or supermarket just because the model suits their face or clothes.

We won’t say for now whether there is a single correct approach, but we will tell you what parameters sunglasses have, so that each person can choose what is right for him in this particular situation.

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What do you think main function sunglasses? That’s right, it’s even “indicated” in their name - to protect from the sun. And here important nuance! Protection is not just “making sure your eyes don’t squint in the sun,” but “protecting your eyes from exposure to harmful ultraviolet light that is present in the sun’s rays.” And the ideal option for sunglasses is 100% UV blocking. This protection will be provided by glasses with UV400 symbols on the temple (sometimes called the “arm”). The number 400 in the marking means that these glasses block all rays of the ultraviolet spectrum of solar radiation with a wavelength of up to 400 nanometers.

The minimum acceptable value, according to GOST R 51831-2001, is the UV380 marking. It is not recommended to buy glasses with protection below this limit, since they transmit ultraviolet radiation, which can provoke the development of cataracts and retinal diseases.

In the Ochkarik optical salons, all sunglasses have the highest degree of protection, and you can be sure of their impeccable reliability.

LIGHT TRANSMISSION AND DEGREE OF DARKNESS

In addition to the degree of protection from UV rays, there is another important parameter: the category (filter) of light transmission of the lens. Like the first one, it can also be indicated on the temple of the glasses.

If the corresponding marking is not there, it may be indicated in the documentation for the glasses. This is acceptable and is not evidence of counterfeiting or Bad quality goods, since in Russia there is no regulation of the place where the light transmittance category of glasses should be indicated. In Europe, by the way, there is a corresponding quality standard - EN ISO 12312-1, which requires that the category be indicated on the temple (arm) of glasses. It might look like this:

Let's look at the categories of spectacle lenses:

• 0 category orCat.0 transmits from 100 to 80% of light.

This category includes ordinary glasses “with diopters” and clear lenses, which are made according to a doctor’s prescription and are intended to be worn indoors, at night or in twilight; night glasses for drivers; some sports and snow and wind protection glasses, which are used in the absence of bright light.

• 1 category orCat.1 transmits from 80 to 43% of light.

These are glasses with light lenses for cloudy weather, for wearing in the city in weak sun, for use as an accessory.

• 2nd category orCat.2 transmits from 43 to 18% of light.

These glasses are medium in darkness and should be used in partly cloudy weather, in moderately bright sunny weather, and are suitable for driving.

• 3 category orCat.3 transmits from 18 to 8% of light.

Strongly darkened glasses that protect from bright light, including sunlight. Suitable for drivers.

• 4th category orCat.4 transmits from 8 to 3% of light.

The darkest lenses in these glasses allow them to be used in conditions of blinding light (from the sun, snow, water): at sea, in the mountains, in snowy regions, etc. Not recommended for driving as they may make it difficult to determine traffic light colors.

There are also glasses that transmit less than 3% of light - these are special glasses, for example, welding or arctic. They do not belong to any category, are created for special conditions and are not sold in regular optics.

The degree of darkness is the reciprocal of the light transmission category. That is, if the glasses transmit 30% of the light, then they are 70% darkened. And vice versa. It is important to keep in mind that the degree of darkness of the lens does not automatically protect the eyes from ultraviolet radiation! Even completely transparent ones from category 0 can have a UV filter. And vice versa: dark lenses in glasses, but transmit UV rays.

In our salons, most sunglasses fall into category 3. There are also category 1 club glasses with glasses of different colors: yellow, pink, blue.

WHAT IS THE DIFFERENCE BETWEEN EXPENSIVE SUNGLASSES AND CHEAP ANALOGUES?

Today's technologies make it possible to provide the proper degree of eye protection even in very inexpensive sunglasses. In this case, what explains the price difference?

1. Brand

   ​ Opticians and online stores sell glasses of those brands and brands with which they have contracts (from mass market (brands that the majority can afford) to premium class (high price category). The more famous and popular the brand, the higher maybe its price.

2. Materials

   High-quality, reliable, natural, rare, hypoallergenic or simply difficult-to-process materials are more expensive. Designer and decorated glasses also tend to be more expensive than others.

3. Optics quality

   Good glasses will not even have microscopic and invisible gaps, nicks, cracks and other defects that can significantly reduce the service life of the product and affect its appearance or even cause harm to health. Additional checks and quality control require corresponding costs, which add “weight” to the final price of the product.

WILL CHEAP SUNGLASSES HARM YOUR EYES?

And now the main question that follows from all of the above - can inexpensive sunglasses bought, say, in an underground passage, ruin your eyesight?

ANSWER: The main thing is not where and for how much you buy sunglasses, but what materials they are made of, how reliably and efficiently they are processed, whether they have the qualities necessary for your needs - the required category of light transmission, degree of darkness, and, of course, whether they protect against ultraviolet.

The chief doctor of the Ochkarik chain of optical salons comments on this: “Modern theories of the influence of ultraviolet radiation on vision suggest that ultraviolet radiation provokes the development of cataracts (clouding of the lens) and some diseases of the retina.

High-quality sunglasses can have very dark lenses, but do not have UV protection, that is, they allow harmful radiation into the eye. And it's even worse than if you didn't wear sunglasses at all. Physiologically, in bright light, the pupil narrows, the eye squints, thereby preventing the passage of ultraviolet radiation. And in sunglasses, the pupil is wide, you don’t squint, and meanwhile ultraviolet rays penetrate the eye and gradually cause damage to it, if the glasses don’t have UV400.”

With cheap glasses there is a higher risk that the processing of the materials, primarily the lens itself, will be insufficient (a poorly processed edge may crumble!). That is, microscopic crumbs and particles of materials can get into the eye, and this is dangerous. Frames made from questionable materials will not only not last long, but can also cause allergies or skin irritation.

We are not saying that absolutely all cheap glasses are bad. However, in those places of sale where they cannot demonstrate quality certificates to you, in accordance with the legislation of the Russian Federation, or guarantee their availability, you always take a risk.

SO WHAT ARE THE BEST SUNGLASSES?

There are no best or worst - there are those that are suitable or not suitable for a certain situation. If you plan to be under the scorching sun for a long time and in bright light, for example, at sea or snowboarding, then you need glasses with maximum protection “on all fronts” - both from UV and with maximum darkening. If glasses are needed for a photo shoot or a party, the option of simple glasses is certainly acceptable.

However, we are given one vision for the rest of our lives. We perceive the world primarily with our eyes. We get the most vivid impressions from what we see. And is it worth saving on this... Only you can decide.

By the way, in the Ochkarik optics salons you can check the degree of ultraviolet protection of your glasses, absolutely any glasses - even if you bought them a long time ago and not from us. We really care about our customers, so we do UV testing for free for absolutely everyone!

Come to us and see everything for yourself!

What is UV protection of polycarbonate, why is it needed and what types of it exist? It is these rather important issues that we will try to understand today.

Polycarbonate is a fairly hard, elastic and at the same time flexible material. It is used in almost all areas of construction as a translucent material. In fact, it is the strongest material among all polymers.

But polycarbonate, like polymers, has one serious drawback - it is susceptible to ultraviolet radiation. It turns out that under the influence of direct sunlight, it loses its unique abilities, becomes cloudy and becomes very fragile. Material exposed to long-term radiation is very quickly destroyed by hail, wind and even heavy rain.

UV protection polycarbonate

In the early 70s of the last century, almost everyone was faced with the problem of instability of the polycarbonate structure after prolonged exposure to solar radiation. This became problem number one. It was decided to find a way to eliminate this problem.

At the first stage, special ultraviolet stabilizers were produced and added to the primary material – granules. This was the first UV protection for polycarbonate. But this decision turned out to be quite expensive, since the cost of the final product exceeded all expectations. In addition, stabilizers did not provide 100% protection against UV radiation.

As a result, a decision was made to minimize the costs of creating ultraviolet protection for polycarbonate.

In order to avoid such problems, scientists used the developed stabilizer to create a special coating, which was applied in a fine layer to the polycarbonate. It did not transmit ultraviolet radiation and perfectly preserved the polymer from radiation. It was called ultraviolet protection or abbreviated UV protection of polycarbonate.

Types of UV protection of polycarbonate

This layer is applied to the surface of polycarbonate in two ways: spraying and extrusion.

Spraying is perhaps one of the cheapest and most unreliable methods of applying UV protection to polycarbonate. This application is reminiscent of industrial painting and is carried out immediately after the production of polycarbonate sheets. This method has serious drawbacks. First, if not neat, this layer is erased. Secondly, over time, this layer begins to peel off and peel off from the surface of the polycarbonate. This is not visible to the naked eye. Third, such a layer is quickly erased by microparticles during heavy winds, rain and snowfall.

Extrusion UV protection of polycarbonate is considered very practical and reliable. With this protection, the layer is applied to the surface using the extrusion method, that is, it is as if the protective layer is being implanted into the surface. This procedure occurs during the manufacture of polycarbonate panels with high temperatures. The layer of this coating is thicker than the previous one and is less susceptible to mechanical damage.

A protective film must be placed on top of the protective layer. It usually comes with brand names and inscriptions of the manufacturing company and it indicates that under the film there is UV protection of polycarbonate, or something like that. On the other side, the polycarbonate is covered with a film without inscriptions. Polycarbonate panels have only one surface with UV protection.

When installing polycarbonate, the side with UV protection should always be installed towards the radiation source, that is, the sun. Often, inexperienced installers, before installing polycarbonate sheets, remove both protective films and, when installing, inadvertently turn the side with UV protection in the opposite direction from the light source. With such an installation, even the highest quality polycarbonate will quickly become unusable, and in a year or two the first hail will turn it into a sieve.

In general, it is advisable to remove protective films after installation of the sheets, this will minimize minor mechanical damage to the surfaces. But still, if there is a need to remove them earlier, be sure to mark the side with UV protection of the polycarbonate with a marker or other method convenient for you.

Practice advice. Be sure to use during installation. If the ends of the cellular polycarbonate are covered with tapes, the expansion and contraction of the polycarbonate will be smooth without sudden jumps. This is due to the air gap inside the cells, the principle of double-glazed windows. The air closed inside the honeycombs cannot quickly heat up or cool down. If the tapes are missing, then with a sharp expansion, for example, when the sun comes out from behind the clouds, microcracks may appear on the UV layer, which will not be visually visible, but the damage from them will be noticeable after a short period of time.

Very interesting fact . Some large polycarbonate manufacturers, such as, use primary granules to produce monolithic and cellular polycarbonate with an admixture of UV stabilizers. The volume of such stabilizers can reach up to 30% of the total volume of the granules. Accordingly, such polycarbonate is not cheap, but the quality, as they say, justifies the cost. such polycarbonates reaches 25 years.

When choosing polycarbonate, be sure to ensure that the polycarbonate has UV protection. There are manufacturers who produce polycarbonate without UV protection.

Well, today we have discussed what UV protection of polycarbonate is, why it is needed and what types there are. In addition, tips and recommendations for the installation of polycarbonate were partially given. I hope this information will be useful to you.

If you have any questions or suggestions, please contact our support team or write in the comments.