HDPE Material Specs and Info - Traco Manufacturing, Inc

What does HDPE stand for?

You can find more information on our web, so please take a look.

High-Density Polyethylene

Can HDPE be used to make furniture?

Yes, it&#;s an excellent material for furniture. Given its high impact resistance and chemical resistant nature, it will make an excellent choice for your outdoor furniture project. It is resistant to fading, moisture, warping, splintering and many other elements of the outdoors.

How strong is HDPE?

Depending on the grade and thickness, it can be both strong and impact-resistant plastic. It has a high strength to density ratio. Grades such as HDPE Pipe Grade are even stronger.

How is HDPE recycled?

HDPE is a commonly recycled plastic. At Traco, we take pride in our green initiatives and seek to reduce waste and recycle the plastic waste that comes from our manufacturing. See our blog on how we reduce waste and save our customers money.

When it comes to recycled HDPE, reprocessed or recycled is actually more stable than what is referred to as virgin (non-recycled) material. Recycled HDPE contains roughly 60% recycled material. Because of this, when cut into long sheets has far less lifting at the edges of the sheet. This is due to the fact that reprocessed (recycled) material contains less of a substance called a plasticizer.

Reprocessing into sheets has become even more interesting. Now during the extrusion process, you&#;ll find that the center of an HDPE sheet is made of recycled material and the outside pieces are composed of the virgin material. Again with less of the plasticizer overall. The result of which is a nice, uniform sheet of HDPE with flat edges all the way around. Learn more about Traco&#;s recycling efforts in our blog post here.

Is HDPE FDA compliant?

Cutting board grade HDPE is FDA compliant.

Is HDPE UV resistant?

Yes, HDPE does come in UV-resistant form. This is known as UV stabilized HDPE and it is resistant to water as well. This grade is often used for playground equipment and marine construction components.

Is HDPE an antimicrobial plastic?

There are two forms of antimicrobial HDPE. King Medigrade HDPE sheets and Simogard Antimicrobial Additives.

King Medigrade uses a proprietary additive during the extrusion process resulting in HDPE sheets that are resistant to fungi, algae, as well as stain and odor-causing bacteria. Because it is added during the early stages of production, the antimicrobial properties will last for the lifetime of your product. This grade of HDPE is an excellent option for use in medical facilities and hospitals.

Simogard Antimicrobial Additives is another great option for antimicrobial HDPE. Sold as an upgrade to many of their HDPE materials, it can be added to their cutting board grade HDPE and even their playground board HDPE.

Does HDPE do well in the elements outdoors?

Certain grades of HDPE do well outdoors such as UV stabilized grade HDPE and HDPE pipe grade sheets.

What are the colors available in HDPE sheets?

HDPE comes in a wide variety of colors including: natural, black, red, yellow, green, beige, blue, polar white, mercury gray, seafoam, sand shade, whitewash, teak, weatherwood, mahogany, sunshade, dolphin gray, white/white. Engravable HDPE comes in a variety of colors as well including: blue/white/blue, white/red/white, black/white/black, white/black/white, beige/green/beige, blue/yellow/blue, and more.

We are able to provide HDPE in custom colors to fit your brand colors.

What are the most common brands of HDPE?

SANATEC, POLYSTONE, and ORTHOFORM

What is HDPE pipe?

HDPE pipe grade is a type of HDPE that performs well in outdoor settings. It is resistant to both UV rays and chemicals. This grade of HDPE can be used to line the inside of metal tanks that transport chemicals. This is a very heavy-duty HDPE that can even be fusion welded to other pieces of HDPE pipe.

For example, in the vicinity around Traco manufacturing, there are actually a number of working farms. These farmers use HDPE pipelining on the inside of their spray trucks. At times, they&#;ve had instances where a crack will form in the lining of their tanks. We have been known to weld patches for them so that they can continue the use of their spray tanks.

Is HDPE food grade?

Cutting board grade HDPE is FDA approved for use in the food industry. Chemical resistant and easy to clean. This grade of HDPE is able to resist heat. For use in direct or indirect food contact, contact Traco today about our industrial use cutting boards for your restaurant!

Is HDPE BPA free?

Yes, HDPE is BPA-free.

If you want to learn more, please visit our website ABOSN.

Is HDPE toxic?

No, this material is non-toxic.

Is HDPE dangerous?

Absolutely not.

Where can you buy HDPE sheets?

Contact Traco to get started on your next HDPE project today!

Can you paint HDPE?

No, paints are unable to adhere to the surface of HDPE. This is great for outdoor furniture. Graffiti will not ruin your HDPE product!

What kind of glue can you use on HDPE?

In our experience here at Traco, we have never found an adhesive that will repair or hold to HDPE. This is a problem, especially for chemical tanks that are lined with HDPE. If the contents inside of the tank are flammable, with no adhesive available that will seal HDPE, they must purchase a new tank. It is impossible to weld on a tank that holds flammable material.

How is HDPE made?

HDPE is made through a process called extrusion. HDPE pellets are added to the machine and heated to temperatures between 350 and 500 degrees Fahrenheit. The resulting molten HDPE is then formed into sheets, rods, or tubing and run through long rollers all while cooling the finished product.

What temperature does HDPE melt at?

The melting point of HDPE is roughly 260 degrees Fahrenheit.

What is the difference between HDPE and LDPE?

HDPE has a rigid surface whereas LDPE is more malleable. We&#;ve discussed above at length the uses for HDPE. LDPE is mainly used to build orthopedics and prosthetics for use in the medical industry. LDPE provides a more flexible application. They can get this flexibility while still maintaining chemical resistance by using LDPE.

How to clean HDPE?

HDPE is easy to clean and is very chemically resistant.

What is engravable HDPE?

You may have seen at the top where we mention color varieties in &#;engravable HDPE.&#; If you&#;ll notice HDPE sheets can come with a different color in the center than on the outside for example a sheet can be ordered in blue/white/blue. Because the center of the sheet is a different color than the outside when you engrave words or a logo onto the sheet. The different colored center will be revealed.

In this week&#;s tech chat we wanted to de-mystify the whole High density Polyethylene HDPE grade chaos and try and simplify the whole subject. We decided to cut to right to the chase and get to the bottom of only what we need to know and also what we don&#;t.

The crux of the matter
Although you happily order your HDPE sheet, guess what, like most things in life its not quite as simple as that, because someone in their infinite wisdom decided that there should be two grades. So in the sheet grades we have the 300grade and 500grade. The question is, did that &#;someone&#; do this for a good reason or have they got a lot of shares in Paracetamol?

What are these numbers anyway?
The 300 and the 500 stand for the density of the plastic molecules, it stands to reason that the 500 grade is denser but are there any major advantages?

That old chestnut
The obvious other difference is the price, we&#;re not getting our extra density for free and on average the 300 grade is approx 15% cheaper, on a small project its not going to have an effect but on a big project that 15% is going to show.

Bang for buck
We thought we&#;d get the data sheets out and compare them both in a like for like basis and we&#;ve tried to list the main ones, and 500 grade is:

• Tensile strength +25% better
• Friction numbers looks to be exactly the same
• Hardness +12% harder

We&#;d like to have told you that the wear resistance was much better for 500 grade and the general consensus is that it is, but the manufacturers haven&#;t gotten round to doing any lab data comparison to support this

What else do we need to know?
Well 500 grade is &#;pressed and planed&#; when its manufactured, which definitely has its advantages when it comes to stability particularly during and after machining, we&#;ll be covering this pressed and planed process in a future tech chat. But suffice to say that the whole surface of the sheet will have circular planning marks across it.

The other advantage of 500grade is the range in terms of thickness and colour options. Thickness in 500 will range from 5mm right up to 100mm where as 300grade will generally start at 1mm and stop at 50mm

And as we also mentioned, 500grade is available in a range of colours and is often used as a colour coding system for chopping boards in the food industry.

Rod keeps it simple
Yes, HDPE rod is going to be the &#;one size fits all&#; category and they&#;ve chosen to stick with one grade which is 300 grade so at least the confusion is limited to sheet only.

The Key parts then are:

• 300 grade is approx 15% cheaper
• 500 grade is 25% stronger & 12% harder
• 500 grade probably has a better wear resistance
• 500 grade is more stable once machined
• 500 grade is available in a greater thickness range
• 500 grade is available in a range of colours
• 500 grade surface is going to have circular planning marks