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Contact Us

ABN

16 098 602 790

 

Address

8 Silkwood Rise, Carrum Downs,

3201, Victoria, Australia

 

Telephone

toll-free from within Australia

1300 361 771

 

Polyethylene Sheets

Design Flow manufactures Matrix Panels plastic sheets in Australia in three types of PolyEthylene (PE), which are available in both virgin (new) materials and 100% recycled materials:

  • High Density PolyEthylene (HDPE)
  • Linear Low Density PolyEthylene (LLDPE)
  • Low Density PolyEthylene (LDPE)

 

Information provided below should help you to choose the correct material for your appllication based on the mechanical and chermical properties. 

 

Polyethylene is a very versatile group of materials with excellent toughness even at very low temperatures.  It can be easily cut, machined, thermoformed, mechanically fastened and heat welded, which makes it ideal for fabrication of assemblies from components.

 

PE has good resistance to chemical attack.  At room temperature, it is insoluble in most organic solvents but is attacked by strong oxidizing acids.  At higher temperatures it becomes increasingly more susceptible to attack by aromatic, chlorinated and aliphatic hydrocarbons.  PE is resistant to acids, salts & salt solutions, alcohols, oils, fats, waxes & many solvents.  All PE materials are affected by strong oxidizing agents such as nitric acid, chromic acid or halogens.  Aromatics and Halogenated hydrocarbons cause swelling.

 

Key Properties of Polyethylene

 

  • Extremely tough and impact resistant, even at very low temperatures
  • Light weight, floats in water, does not absorb water
  • Good chemical resistance including to most acids, bases and solvents
  • Resistant to stains and odours
  • Easy to cut and machine using woodworking tools
  • Weldable using plastic welding equipment
  • Suitable for fabrication using mechanical fasteners but NOT adhesives
  • Bendable when heated (thermoformable)
  • Good sliding properties (low coefficient of friction)
  • Excellent wear (abrasion) resistance
  • Excellent surface release properties (non-stick surface)
  • Very good damping properties
  • Virgin grades are approved for Food Contact
  • Black and UV-stabilised grades are suitable for long term outdoor use
  • Very good electrical insulator

 

Examples of Applications of Polyethylene Sheets

 

  • Chemical and water tanks, pipeline components
  • Hoppers and boxes
  • Scrubbers and grease traps
  • Silo and chute linings to resist sliding abrasion and assist release
  • Wall linings, animal housing, equestrian
  • Commercial cutting boards, die cutting pads
  • Machine parts, guides and fixtures
  • Gears, star wheels and rollers, washers and bushes
  • Signs and parts used outdoors or in water
  • Dock fenders, pontoon and jetty components
  • Conveyor components subject to high wear and requiring low friction
  • Components in direct contact with foodstuffs
  • Parts subject to high impact stresses

 

We manufacture Polyethylene Matrix Panels in three types - High Density PolyEthylene (HDPE), Low Density PolyEthylene (LDPE) and Linear Low Density PolyEthylene (LLDPE).

 

HDPE is the most rigid type of polyethylene resin with the Flexural Modulus between 900MPa and 1100MPa depending on the grade.  It is best suited to manufacture of boxes, machine parts, liquid tanks, pipeline components, etc.  HDPE sheets are available in Virgin Natural (translucent white colour), Virgin Black (PE100 pipe grade), Recycled Black (PE100 equivalent) and a range of solid colours which includes White, Yellow, Red, Blue and Green.  We manufacture HDPE sheets from 7mm to 60mm thick.

 

The melting temperature of HDPE is about 130ºC and it can be used continuously between -100ºC and +120ºC, depending on the mechanical stress level.The density of HDPE is 0.95 to 0.96 grams per cm3

 

Chemical resistance of HDPE is follows:

  • Excellent resistance (no attack) to dilute and concentrated Acids, Alcohols and Bases.
  • Good resistance (minor attack) to Aldehydes, Esters, Aliphatic and Aromatic Hydrocarbons, Ketones and Mineral and Vegetable Oils.
  • Limited resistance (moderate attack and suitable for short term use only) to Halogenated Hydrocarbons and Oxidizing Agents.

 

LDPE is the most flexible type of polyethylene and is similar to hard rubber.  Its Flexural Modulus (resistance to bending) is between 200MPa and 400MPa depending on the grade.  LDPE is available in Virgin Natural (translucent white), Recycled Black and Recycled Jazz (mixed colours), in a range of thicknesses from 7mm to 19mm thick. 

 

The melting temperature of LDPE is 120ºC and it can be used continuously between -50ºC and +80ºC. The density of LDPE is 0.92 to 0.93 grams per cm3.

 

Chemical resistance of LDPE is as follows:

  • Excellent resistance (no attack) to dilute and concentrated Acids, Alcohols, Bases and Esters at room temperature
  • Good resistance (minor attack) to Aldehydes, Ketones and Vegetable Oils
  • Limited resistance (moderate attack suitable for short term use only) to Aliphatic and Aromatic Hydrocarbons, Mineral Oils and Oxidizing Agents
  • Poor resistance and not recommended for use with Halogenated Hydrocarbons

Linear Low Density PolyEthylene (LLDPE) has density, mechanical, chemical and thermal properties between those of HDPE and LDPE.  Its Flexural Modulus is between 500 to 700MPa depending on the grade.  LLDPE is available in Virgin Natural (translucent white), Recycled Black and a range of Bright and Colorbond® colours, in a range of thicknesses from 7mm to 19mm.  Standard material and colour range is shown in the table below.  Other colours can be manufactured to Special Order, however minimum order quantities will apply - please contact us for details.

 

Colour Material

HDPE

LLDPE

LDPE

NATURAL (Virgin)

STD

STD

STD

BLACK (Virgin)

STD

S/O

S/O

BLACK (Recycled)

STD

STD

STD

JAZZ (Recycled mix of colours)

S/O

N/A

STD

WHITE

STD

STD

N/A

YELLOW

STD

STD

N/A

RED

STD

STD

N/A

MID GREEN

STD

STD

N/A

ORANGE

STD

STD

N/A

BLUE

STD

STD

N/A

LIGHT GREY

STD

STD

N/A

OFF WHITE

STD

STD

N/A

CAULFIELD GREEN

STD

STD

N/A

MID GREY

STD

STD

N/A

SMOOTH CREAM

STD

STD

N/A

PURPLE

STD

STD

N/A

SLATE GREY

STD

STD

N/A

MIST GREEN

STD

STD

N/A

BROWN

STD

STD

N/A

KEY: STD = Standard Stock material S/O = Special Order; N/A = Not Available

 

The table below shows approximate weight of each panel and quantity of panels per pallet:

Nominal thickness (mm)

7

8

12

15

19

25

30

35

40

45

50

55

60

Approximate weight (kg)

21

24

27

36

46

58

76

88

107

124

140

155

180 

190 

Qty of sheets per pallet

45

40

38

28

23

18

14

10

9

8

8

7

6

6

 

Notes:

We cannot guarantee the colour consistency of recycled materials, which may result in spotty / speckled finish and variation in colour from batch to batch and from panel to panel within a batch.  If exact colour consistency is required, use coloured virgin material.

 

Natural materials without UV stabilisers are not suitable for outdoor applications as they are not protected against deterioration caused by exposure to UV light.

Design Flow is the only company in Australia that can manufacture unique Jazz sheets from a mixture of colours.  No two sheets are the same, and the pattern of colours varies across each sheet.  Each sheet is like a work of modern art, except it can be used outdoors for cladding, fencing, screening, seating, tables, playground equipment, etc.
If you have a particular combination of colours in mind, let us know and we will try to accommodate your requirements.  Note - Minimum Order Quantities apply.  Contact us for details.