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Common Uses of HDPE (High-Density Polyethylene)

Common Uses of HDPE (High-Density Polyethylene)

HDPE or High-Density Polyethylene is part of a widely-used family of thermoplastics, HDPE ‘Polyolefin’, which is produced through polymerizing ethylene and propylene for properties that are excellent in applications such as food handling, food preparation equipment, wear resistance, consumer goods, and much more.

Why this thermoplastic is so popularGlass bottles weigh 16 times more than plastic bottles

HDPE is known for its excellent strength-to-density ratio, as well as its strong intermolecular forces, high impact and tensile strength. These properties combine for a hard, durable plastic that is excellent for many applications from containers for consumer goods to chemical and structural tanks components. At the same time, HDPE is lightweight and highly resistant to stains, odor, moisture, chemicals, and abrasion. Most importantly, HDPE doesn’t contain harsh or toxic chemicals that could be harmful to users, making it excellent for a wide variety of consumer and commercial products. Specifically, HDPE does not contain: BPA, Phthalates, Allergens, Heavy Metals or Harmful fumes.

HDPE has excellent wear and chemical resistance. HDPE is a commonly used material for rub strips, chute liners and bottling plant components. An example of wear resistance is the yellow plastic playground slides which are made of HDPE. This versatile plastic material is often the choice for use for chemical and toxic containers and bottles.

The HDPE material is the common material used to make the one gallon milk jugs. These are easily recycled, and 8 – 10 milk jugs is equal to about one pound of recycled HDPE material. On average, over 115 million milk jugs are recycled each year.

Some common uses of HDPE

HDPE is FDA, USDA, and NSF compliant, making it especially popular for making components such as cutting boards, food preparation surfaces and equipment components. HDPE is often used in a wide range of food processing equipment, food containers and bottles, as well as valve and pump components. However, the Food processing industry isn’t the only industry relying on HDPE. Its excellent impact strength makes this plastic popular for everything from impact parts to dasher boards in ice rinks, to personal protection gear.

In addition, HDPE has excellent properties that make it perfect for heat-formed or vacuum-formed parts, producing food trays and containers and much HDPE can be recycled and made into usable plastic lumbermore. The plastic’s durability and impact resistance makes it an excellent choice for the linings of conventional freezers, bed liners for heavy trucks, and liners in silos. The marine industry is an active user of HDPE due to its toughness and very lightweight to size ratio.

As one of the most used plastics, HDPE has a density of just .941 – .965 per ASTM D792. While many think of Aluminum as a lightweight material, it actually is 2.8 times the weight of  HDPE plastic material.

HDPE also has been successfully used in a variety of cement molds and various types of transfer and storage boards. This plastic can be found in crates and bottles for holding not just food products, but also detergents and cosmetics. Industrial pallet wrapping benefits from HDPE film durability, while petrol tanks benefit from this plastic’s inherent chemical resistance.

Looking for a supplier of polyethylene thermoplastics?

Industrial Plastic Supply, Inc. is an expert in performance plastics, and has one of the largest material inventories in the World. To learn more, check out full line Performance Plastic materials on our website.

Acetal Copolymer

Acetal Copolymer

Acetal Copolymer and Dupont Delrin Rod Tecaform AH, Sustarin C and ZL-900

Acetal Materials

Acetal Copolymer / Dupont Delrin® 150SA Homopolymer


Which Acetal material should you use? (POM)

  • Both Acetal Copolymer and Delrin® 150SA Homopolymer are FDA Compliant
  • Both are very stiff and have excellent dimensional stability
  • Are Self Lubricating, Abrasion Resistance, and Excellent Wear properties
  • Available in Natural, Black and Blue. Custom colors also available.
  • Cuts extremely well with standard cutting tools
  • Delrin® AF (PTFE Filled), Glass Filled, and Specialty Grades Available
  • Delrin® 150SA Homopolymer have similar properties and frequently replace: Noryl®Nylon®, and PET or PBT materials
  • Acetal and Delrin® are High Tech Performance Plastics

Some reasons to choose Homopolymer vs. Copolymer

Both Acetal (POM) grades have very similar properties. Our clients seem to prefer the Dupont brand name Homopolymer materials because of the superior physical properties. The issues that lead clients to the Copolymer is a slightly lower cost, and the minor inherent center-line porosity in the Delrin® 150SA Homopolymer grade.

Dupont™ Delrin ® is a popular acetal homopolymer brand name and the most commonly used acetal homopolymer.

The Delrin® 150SA is a brand name of Dupont, and it is often referred to as POM-H or Acetal Homopolymer. Common brand or trade names for extruded Acetal sheet and rod materials include: Tecaform® AH, SUSTARIN® C, ZL® 900-C, Pomalux®, Unital®, Mechatec Acetal®, Acetron® and many more. This excellent mechanical plastic material is also referred to as: Acetal Copolymer rod, Copolymer Acetal rod, Copolymer Plastic Rod, Acetal Copolymer vs Acetal Homopolymer, Homopolymer Acetal rod, Acetal Homopolymer rod, and many others.

Specializing in Wholesale Acetal and Delrin Engineering Plastics, Mechanical Plastics and High Performance Plastics

**Note:  Delrin® is a registered Trademark of Dupont

**See also: Alignable Acetal – Delrin Page

 

10-inch-Black-Acetal-Rod

Why you should use Acetal/ Delrin®

  • Both the Dupont Delrin® and Acetal Copolymer are FDA Compliant
  • They are very stiff and have excellent dimensional stability
  • Are self-lubricating, abrasion-resistant, and have excellent wear properties
  • Cuts extremely well with standard cutting tools
  • Delrin® AF (PTFE Filled), Glass Filled and Specialty Grades Available
  • Delrin® Rod and Plate have similar properties and frequently replace: Noryl®Nylon and PET materials

Some reasons to choose Homopolymer vs. Copolymer

Both POM grades have very similar properties. Our clients seem to prefer the Acetal over the Homopolymer materials due to the inherent center-line porosity in the Delrin® Homo-polymer version. This means, that along the center of a rod, or the middle of a sheet, there is a band of area with tiny porous holes. This can weaken or cause problems with a finished part, and in extreme cases, you may see blow by or leakage at this center line. While Delrin® is a brand name, it is a POM Homo-polymer.

The most requested and popular item we supply is the Acetal; the POM Copolymer resin made by one of the other big resin manufacturers – like BASF or Celanese/Tacona.

Both Delrin and Acetal are ITAR compliant, and Delrin and Acetal are RoHS compliant.

The most requested and popular item we supply is the Acetal; the POM Co-polymer resin made by one of the other big resin manufacturers – like BASF or Celanese/Tacona.

Both of these premium performance plastic resins are readily available. If you would prefer the Delrin® brand Sheet or Rod, drop us a line, send us an email – we will be happy to ship the requested material for you. We don’t make judgments on the suitability of material for your application, we just supply what you, our clients ask for. Please, just let us know ahead of time if you have a preference. There are a few other names we hear when people are looking for Delrin®, like Delron, Delran, Delrun, Delren, and many more. Just let us know, and we will be happy to supply a high quality Delrin® brand or Copolymer Acetal product.

Want more information on the differences?  Acetal Compared With Delrin®  and Use The Best Wholesale Acetal Rod and Delrin® Rod Supplier. Natural Acetal Copolymer Rod Now Available up to 24″ in Diameter

Still not sure Delrin® or Acetal is the proper material for your application, consult our free Plastic Materials Selection Guide.

Industrial Plastic Supply proudly stocks Acetal and Dupont Delrin 150SA from these premium manufacturers:

Ensinger® Plastics for Dupont Delrin 150SA and Tecaform AH Copolymer Acetal

Rochling® Plastics for Dupont Delrin 150SA and Sustarin C Copolymer Acetal

Z/L Plastics® for Dupont Delrin 150SA and ZL® 900 series Copolymer Acetal

And many more ‘American Made’ quality plastic manufacturers.

Both Delrin and Acetal are ITAR compliant, and Delrin and Acetal are RoHS compliant.

Acetal materials are excellent machining materials – a favorite of machinists. Works like a soft brass, and has exceptional dimensional stability. It comes as a stress relieved material, however if you plan to do extensive machining, you may need to stress relieve the parts prior to final pass. Rods are machined well in lathe and mill, sheets are machined or cut in most common machine tools.

  • Excellent Machining
  • Low co-efficient of Friction
  • Very low moisture resistance

The work horse of the mechanical plastics family, it is one of the most popular grades of material we supply. Other brand or trade names: Pomalux®, Acetron®, Ensital®, Unital®, Tecaform®, Ultraform®, Celcon®, BASF®, Hostaform®, Ticona®, and Dupont Delrin®. Occasionally we are asked for the difference between Acetal and HDPE – here is an explanationApplications – Frequently used in:

  • Wear and Slide machined parts from Rod and Plate
  • FDA, NSF, 3-A, and USDA Compliant Machined Parts
  • Easily machined parts for water / moisture environments
  • Critical tolerance and dimensionally stable parts
  • 185 degrees F Continuous Temperature Environments
  • Rod and Rods, Sheet and Sheets for numerous applications

Acetal Sheet and Rod Specifications:

In stock we normally carry one of these resins: BASF Ultraform® H4320, Kepital® F10-02, or Hostaform® M25. Current Certifications and Specifications used for Acetal – Delrin®: FDA, USDA, NSF, ASTM D6778 Superseded or out dated Specifications for Acetal – Delrin®: L-P-392, ASTM D4181

Materials Available As

Delrin® Sheet – Delrin®Plate or Acetal Sheet – Acetal Plate: .062″ – 6.0″ up to 48″ X 120″ in Natural (White) and Black.

Acetal sheet and Acetal Plate thickness normally in stock: .125″, .187″, .250″, .312″, .375″, .500″, .625″, .750″, .875″, 1.0″, 1.250″, 1.500″, 1.750″, 2.0″, 2.250″, 2.500″, 2.750″, 3.0″, 3.250″, 3.50″, 3.750″, 4.0″, 4.50″, 5.0″ and larger

Delrin® AF Sheet and Plate: .062″ – 3.0″ thick in 24″ X 48″, brown in color

Delrin® AF Rod: .250″ – 10″ diameter rod in up to 120″ lengths, brown in color

Film: .005″ – .062″ up to 24″ wide in Natural (White) and Black (minimums may apply)

Acetal Rod and Rods: .125″ – 10″ diameter in Natural (White) and Black up to 120″ lengths For Colored Acetal – Delrin Rod® Read Here.

Acetal Rod diameters normally in stock: .125″, .187″, .250″, .312″, .375″, .437″, .500″, .562″, .625″, .750″, .875″, 1.0″, 1.125″, 1.250″, 1.375″, 1.500″, 1.625″, 1.750″, 2.0″, 2.250″, 2.500″, 2.750″, 3.0″, 3.250″, 3.50″, 3.750″, 4.0″, 4.50″, 5.0″ and many more – up to 20.0″ diameter rod is available!

Special Formulations: Conductive, Static Dissipative, PTFE-TFE Filled, Glass Reinforced, Custom Sizes, Formulations, or Colors Occasionally we are asked for the difference between Acetal and HDPE – here is an explanation.

Typical Resin Properties:

General PropertyASTM TestTypical Value Unfilled Delrin® Homo-PolymerTypical Value Unfilled Co-PolymerTypical Value Delrin® AF
Specific GravityD7921.421.401.50
Tensile Strength YieldD6389,600 – 11,0009,000 – 10,2007,600
Tensile ModulusD638450,000400,000400,000
Izod Impact – NotchedD2561.21.00.9
Hardness – RockwellD785M94M90M89
Deflection Temp @ 264psiD648257220260
Deflection Temp @ 66 psiD648347335347
Water Absorption @ 24 hrs%0.240.250.20
Co. Thermal ExpansionD6966.83X10-55.4X10-55.0X10-5
Acetal Copolymer Sheet and Rod

Properties are for evaluation purposes only. This information is not to be construed as a warranty, guarantee or assurance that you may achieve the same results. Materials made from different resin types, manufacturing techniques and manufacturers will react differently. The information should be used to compare against other materials only, and each user should make his own tests to determine suitability. No warranty as to this materials suitability are either expressed nor implied.

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We are not a plastic material broker. We are a full-line stocking distributor with many materials in stock and on the floor. Some specialty or infrequently ordered materials may need to be special ordered. Our shipping prices for FedEx Ground and UPS are for the United States Only. We prefer to use FedEx shipping services because we have almost zero issues with them, but UPS is also available. Contact us, your local plastic supplier today!

We stock a complete line of plastic materials in basic shapes:

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Plastic sheets and plates are available in over 80 different materials in a huge thickness range (from .125” – 6.0” or more in most materials).

Our plastic rods and plastic profiles are also available in over 80 different plastic materials in a huge range of diameters (from .125”– 8.0” or more in most materials).

Industrial Plastic Supply has been an industry leader in Commercial Plastics, Mechanical Plastics and Industrial Plastics since 1975, contact us today. We have the answers to all your plastic questions.

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Reviews from some of our many satisfield clients

Ian Volker

1/11/2021

Called and spoke to Jasmine and she was very helpful! Had just left another local plastics supplier annoyed with the help and quote they had just given me. She was MUCH nicer to deal with, and gave me a MUCH better price and a less than 2 day turnaround compared to 2 weeks from the other guys…Looks like IPS will be my new go to for all my plastic related projects!
Ian Volker

1/11/2021

Called and spoke to Jasmine and she was very helpful! Had just left another local plastics supplier annoyed with the help and quote they had just given me. She was MUCH nicer to deal with, and gave me a MUCH better price and a less than 2 day turnaround compared to 2 weeks from the other guys…Looks like IPS will be my new go to for all my plastic related projects!
Ian Volker

1/11/2021

Called and spoke to Jasmine and she was very helpful! Had just left another local plastics supplier annoyed with the help and quote they had just given me. She was MUCH nicer to deal with, and gave me a MUCH better price and a less than 2 day turnaround compared to 2 weeks from the other guys…Looks like IPS will be my new go to for all my plastic related projects!

Plastic doesn’t pollute… People do!
Please reuse, reduce and recycle!

 

News About Plastics

Got Milk… jugs? Now made from HDPE

Why Food Safe HDPE plastic replaced glass as the go-to milk container. Many of you, should you be older than 60, may remember the “Milk Man”. This delivery service from decades ago, was a most common way of transporting milk to the consumer. Back then, suppliers used glass bottles, delivered by this milk man…

Performance Plastic Vs Single Use Plastic

Performance plastics are a wide range of materials that are designed for use in mechanical, engineering, aerospace, food processing, and  many other applications. These performance plastic materials generally have superior physical properties, and frequently are used to replace other materials like metals, wood and glass…

Industrial Plastic Supply, Inc. Newsletter

 

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Got Milk… jugs? Now made from HDPE

Got Milk… jugs? Now made from HDPE

Why food safe HDPE plastic replaced glass as the go-to milk container.

Many of you, should you be older than 60, may remember the “Milk Man”. This delivery service from decades ago, was a most common way of transporting milk to the consumer. Back then, suppliers used glass bottles, delivered by this milk man, right to your front door.

HDPE is Food Safe

When looking at alternatives, the milk processing industry found a use and benefit from replacing the glass with a plastic called High Density Polyethylene (HDPE). But what is HDPE, and what are the benefits of using it?

Why HDPE replace Glass Bottles

Glass is heavy, HDPE plastic is light

One of the characteristics of this thermoplastic is the weight of the material. The reason this is so beneficial brings us back to the milk jug. Old style glass milk containers could hold 32 oz., with the empty glass weighing 1.25 lbs. An empty gallon water or milk jug (128 oz.) weighs in at only 0.25 lbs, and holds 4 times more volume. When full, the milk jug can hold more volume than the glass bottle without compromising the strength, especially when being transported. This lowers the overall transport time and significantly reduces the cost of shipping.

This drop in weight and large increase in capacity is why the industry made the switch. The attribute of high durability in plastic materials like HDPE is known as the “strength to weight ratio”. As already mentioned, this was a huge benefit from switching to HDPE containers – the impact it has on transport costs. The high impact resistance of the material allows for easy transport. The HDPE jugs can withstand the jarring and bumping that is a natural part of mass transit, with almost zero wear or breakage to the product. Compared to the glass bottle, too hard of a turn or a pothole in the road could lead to the disheartening sound of shattering glass… not an ideal result for the distributing company. The HDPE impact resistance still holds true through out the supply chain, and even when the containers enter a store or home. If a HDPE milk jug should fall, the plastic container may spill, but it won’t cause the harm or damage that glass would. Broken glass poses a hazard and a risk, whereas plastic in this case can be easily cleaned, recycled, and used again.

When discussing this topic, the argument of recycling and sustainability sets its sights on plastics. In reality, the carbon footprint of plastics is much smaller than that of glass. The amount of heat necessary to heat up plastic for recycling is dramatically lower than that of glass, making it more sustainable in the long run. Yes, both are 100% recyclable, but the amount of fuel necessary plays a big factor. The temperature needed for melting and processing HDPE is between 248 and 356°F depending on grade. Whereas glasHDPE is 100% recycables materials requires a minimum temperature of 2,600°F, according to SeattlePI. As you can see, these temperatures are very different, and shows why the life cycle of plastic is more eco-friendly and a better option to preserve our environment.

Immensely versatile HDPE applications

HDPE has many more uses, like in structural tanks, FDA approved cutting boards and industrial piping systems. This material outweighs most alternatives in benefits due to it’s cost and performance, and is produced in sheet and rod by many major manufacturers in the USA. HDPE plastics are FDA and NSF approved for food applications, making HDPE a food safe product for most food processing and packing applications. For more details on HDPE and it’s benefits see Industrial Plastic Supply or call 866-832-9315

What other applications could benefit from newer and improved materials to make our world safer, cleaner and more efficient?

Co-author: Graham Hess

HDPE and UHMW Polyethylene Sheet – Cutting Boards

HDPE and UHMW Polyethylene Sheet – Cutting Boards

FDA – NSF Approved Cutting Boards

HDPE and UHMW Polyethylene Sheets

Next time you are cutting vegetables on your cutting board, the material most likely to be used is Polyethylene. Because it is stain, moisture and odor resistant, Polyethylene is a perfect choice. Other cutting boards made out of wood are more susceptible to bacteria and odors because they lack the properties that Polyethylene sheets offer, such as its chemical resistance and FDA approval for food Colored HDPE Cutting Boards NSF approvedcontact. Polyethylene is a very durable and lightweight material that comes in many forms and is a great for a wide variety of applications.

NSF Approved Cutting Boards

The HDPE is available in .500″ thick in several FDA / NSF approved colors, and is great for use in kitchens where cross contamination is a problem. 

The Ultimate Cutting Board

Polyethylene has many names. The most common are HDPE, LDPE, and UHMW. The difference has to with the molecular weight and branching which is when a monomer or atom is replaced by a longer chain of polymers (a long repeating chain of atoms). High Density is commonly used for milk jugs and food containers. Low Density is commonly used for bottles and plastic bags. UHMW, which has higher molecular weight (2-6 million) allows for an even transfer over the length of material which makes it stronger and able to be used for bearing applications due to its great wear resistance. Commonly used in the food and dairy industry, UHMW is a great replacement for other materials and solution to many problems. All of these polymers are derived from the same family but all have certain properties that make them a little different. HDPE provides great chemical resistance, with high impact strength and great energy absorption. LDPE has most of the same properties as High Density but is not as dense at 9.15, opposed to HDPE which is 9.34. It also has a lower tensile strength and easier formability.

UHMW is a strong material that has great durability and low co-efficient making it an ideal for sliding applications. Polyethylene offers a wide range of material choices and properties HDPE can be recycled and made into usable plastic lumberand has great durability that can be suitable for a number of applications. From the food industry to automotive, the kitchen or the warehouse, whatever your Polyethylene needs are; High Density, Low Density or UHMW, Polyethylene is a great choice.

Typical Resin Properties:

General PropertyASTM TestTypical Value HDPETypical Value LDPETypical Value UHMW
Specific Gravity D792.941 – .965.91 – .925.93 – .94
Tensile Strength YieldD6383,800 – 5,5001,400 – 2,0006,800
Izod Impact – NotchedD2562.0 – 3.5>16No Break
Vicat Softening TempD1525257ºF219ºF260
Hardness – RockwellD785D60 -70D42 – 50R64
Continuous Use Temp-100 – 180ºF174ºF180ºF
Deflection Temp @ 66 psiD648171  124174
Co. Thermal ExpansionD6967X10-54.6 -5.5X10-511.0X10-5

Please contact us for more information on FDA and NSF approved plastic materials. Email us here, or call us at: 866-832-9315

Topic: HDPE Cutting Boards – NSF Approved