Polypropylene Sheet

(PP)

General Overview

High Impact Resistance

Resists most chemical attacks

Many grades approved for food contact

UV Resistance: Not good

Clear PVC sheets

Polypropylene sheet, is one of the "classic" wall cladding materials. Generally, easy and quick to install and will withstand repeated steam cleaning. Polypropylene resists attack from most chemicals, including alkali detergents and is corrosion resistant. It is non-toxic and many grades are approved for use in contact with foodstuffs. Although PP is the hardest and stiffest polyolefine it suffers from high creep, poor UV resistance and rapid oxidisation in contact with copper.


There are two basic types; 

Homopolymer - High impact strength and is both rigid and resilient and is tough at room temperatures. It tends to become brittle below about -10°C. Working temperature is 0 to 100°C


Copolymer - Very "tough" but mechanical properties and upper service temperature is about 10% less than Homopolymer. 

Working temperature: -40°C to 90°C


General Applications for Polypropylene

Almost any kind of food industry application from abattoirs and fish processing plants to dairies, bakeries and commercial premises, to kitchens and general food preparation areas.


Installation & Usage

Cutting

Panels are best cut to size using a circular saw or band saw blades which are sharp, with 0° or negative front rake and plenty of clearance to facilitate swarf removal.  Jig saws tend to overheat the swarf which melts and fuses back on to the material. Avoid chipping and de-burr all edges before fitting.

Fixing

Ensure adequate allowance for expansion, a good rule of thumb is to use 5mm per metre length and width. and do not overtighten fastenings. Because of thermal expansion, drill any holes twice the diameter of the fastener and use washers both sides to spread the load.  Never use self tapping screws cutting into the material itself.

Sealants

Allowance needs to be made for thermal expansion, which necessitates the use of flexible acrylic based sealants. Care needs to be exercised in contact with silicones, plasticised PVC and some paint solvents.

Technical Data & Properties

Copolymer Polypropylene Sheet


The information below is specific to the line of Polypropylene that we hold in general stock, other brands and types of polypropylene are also available, but we do not hold a general stock and are therefore subject to lead times.


Physical

Light Transmission  >92%  DIN 5036 pt 3

UV Resistance - OUTSTANDING

Specific Gravity  1.19 g/cm2  ISO 1883

'U' Value (Thermal Insulation) 5.3 W/m2K for 5mm sample DIN4701


Mechanical

Tensile Strength 80 M Pa  ISO527-2/1B

Tensile Modulus (E)  3300 M Pa  ISO527-2/1B

Flexural Strength  115 M Pa ISO178

Notched Impact Strength (Izod) 1.6 kJ/m2 ISO 180/1


Thermal Properties

Co-efficient of Linear Expansion 7.10-5 1/K DIN 53752-A

Thermal Conductivity 0.19


Fire Ratings

BS 476 pt 7 Class 3

Standard Sheet Size Depth Choice in MM
2030 x 1520 mm 3 | 4 | 5 | 6 | 8 | 10 | 12 | 15 | 20 | 25
3050 x 2030 mm 3 | 4 | 5 | 6 | 8 | 10 | 12 | 15 | 20 | 25

Prices for all products are available on request.

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The information provided on this page is as a guide only and it does not constitute actual advice.  If you need help in selecting the best material for an application please speak with us, we'll be only too happy to help. You can call 0161 655 4298 or use the online contact form if you prefer.

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