PP vs PET Strapping: How to Choose for Pallets and Cartons
Strapping selection for Australian businesses
Choose PP or PET with the job in view.
PP vs PET strapping is a choice about the packed load, the tension it needs to retain and the equipment applying it. Polypropylene is commonly used for cartons and lighter bundling. Polyester is commonly selected for more demanding palletising and unitising.
This guide helps Australian warehouse, manufacturing and dispatch teams compare the materials, read the specifications and build a purchasing brief around their actual work.
The quick answer
PP vs PET strapping at a glance
Start with PP for routine carton bundling or lighter loads where the approved packing method suits it. Consider PET when the job calls for higher strap strength and better retained tension. Confirm the exact grade and complete system before ordering.
Polypropylene / PP
Start with the everyday packing task.
Compare PP for carton closure, parcels, bundled goods and lighter pallet work. Choose a hand or machine format to match the station and its approved joining method.
Polyester / PET
Assess the more demanding pallet.
Compare PET where maintaining tension through handling and storage is a key requirement. Check load rigidity, strap specification, joints and edge protection together.
Swipe across the comparison table to read both materials.
| Buying consideration | Polypropylene, PP | Polyester, PET |
|---|---|---|
| Typical starting point | Cartons, parcels, bundles and lighter pallet applications. | More demanding palletising and unitising applications. |
| Retained tension | Assess whether the finished pack stays adequately tight. | Generally offers better retained tension than PP, with performance dependent on grade and setup. |
| Application | Hand and machine grades are available. Match the supplied format to the equipment. | Match the selected strap to the approved manual or powered joining system. |
| Purchasing check | Width, thickness, strength, roll format and closure compatibility. | The same checks, with particular attention to required tension, joint quality and load edges. |
Manufacturer guidance supports these broad distinctions: Mosca describes PP applications, while Signode explains PET tension retention. Their product ratings do not establish the ratings of the Pacific Packaging examples below.
Read the packed load
When should you choose PP or PET?
Begin with what is being bundled. A stack of flat cartons, a compressible box and a rigid pallet of building products create different demands. Record the pack dimensions, mass, edge condition and handling route before selecting a strap.
PP can be a practical starting point for repeat carton work and lighter bundling. Pacific Packaging supplies both boxed hand strapping and machine-grade PP. They serve different application methods, so a shared width does not make them interchangeable.
PET deserves consideration for palletised goods where higher strength and retained tension matter. The selected smooth PET example is listed for pallets, timber, cartons and building materials. That application list is a starting point for assessment, rather than approval for every load in those categories.
What does tension retention mean?
Initial tension is the pull applied while tightening the strap. Retained tension is the tension remaining afterwards. A pack can settle or compress after application, so a strap that initially feels tight still needs assessment through the intended handling process.
During a comparison, inspect the pack after an appropriate holding period and representative handling. Record slack, damaged edges and joint movement. Ask the responsible packaging specialist to define any required measurements and acceptance limits.
Verified product examples
Compare three current strapping specifications
These examples show why material, dimensions and roll format must be recorded separately. Browse the polypropylene PP strapping range or polyester PET strapping range for the wider selection.
PP / Hand application
12mm Polypropylene Hand Strapping
12 mm wide × 0.55 mm thick
1000 m per roll
Blue, embossed PP supplied in a self-contained dispenser box. The listing states a break strength of 130 kgf.
Compare this format for a manual packing station. Check the chosen buckle or seal, tensioner and closing method against the actual strap.
Single-roll SKU: 1100-1
Four-roll SKU: 1100-4
PP / Machine application
Polypropylene Machine Strapping
12 mm wide × 0.6 mm thick
3000 m per roll
Blue, embossed PP listed for semi-automatic and fully automatic strapping machines. The stated break strength is 130 kgf.
The longer roll does not establish machine compatibility. Confirm the approved core, roll dimensions and machine limits before replacing an existing consumable.
Single-roll SKU: 1105-1
Four-roll SKU: 1105-4
PET / Smooth surface
16mm Smooth PET Strapping
16.00 mm wide × 0.90 mm thick
1,100 m per roll
Green, smooth polyester with a stated tensile strength at break of 570–620 kgf. The listed core is 406 mm diameter × 160 mm wide.
Compare the complete specification for palletising and bundling. Use compatible PET seals and tools, or confirm a suitable powered joining system with its supplier.
Single-roll SKU: 1003-1
Four-roll SKU: 1003-4
Specifications checked on 28 October 2026. Dimensions are nominal where stated. Confirm the full current product specification, required quantity and availability before ordering.
Keep the rating in context
Strap break strength is not a pallet weight limit
A break-strength figure describes force at failure under the relevant test conditions. The unit kgf means kilogram-force. It does not identify the mass of freight that one strap can safely secure.
Do not turn the PP example's 130 kgf figure into a 130 kg pallet limit, or treat the PET example's 570–620 kgf range as a safe load rating. The joint, strap layout, load shape, edges and handling conditions all influence the complete result.
Match the complete setup
Check hand or machine grade, tools and the joint
Changing material can affect more than the roll in the dispenser. Confirm how the replacement strap feeds, tensions and joins before it reaches the production station.
For manual strapping
Confirm that the tensioner supports the material and exact width and thickness. If the process uses a metal seal, match the seal and crimper to the specified strap and joint. A nominal seal size alone does not establish suitability.
The boxed PP example lists buckle and metal-seal options. The smooth PET example lists compatible serrated seals and manual tools. Those are different closure routes, and the consumables and application method must agree.
Use the product instructions for threading, tensioning and closing. Inspect the finished joint to the supplier's criteria and keep damaged or incomplete packs out of dispatch pending review.
For powered tools and machines
Check the equipment's permitted material, width, thickness, surface finish and joining process. A tool described as PP/PET compatible still has a defined operating window. Confirm it against the exact replacement strap.
For fixed machines, also verify core requirements, maximum roll diameter and allowable roll weight. The PP machine listing establishes width, thickness and length, but does not state every roll-fit measurement.
For a cordless setup, use our battery-powered PP and PET strapping tool guide to structure the equipment comparison.
Before the volume order
Run a practical PP or PET strapping trial
Use a representative pack and an agreed assessment method. A useful trial should leave purchasing and operations with a repeatable specification and clear reasons for the choice.
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Describe the load
Record the goods, pack dimensions, mass, pallet or bundle arrangement and handling route. Note compressible cartons, sharp edges, movement and any existing damage or slack.
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Record the full strap specification
Include material, width, thickness, stated strength, surface, roll format and SKU. Confirm equipment and closure compatibility before loading or applying the alternative.
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Set the acceptance criteria
Have the responsible specialist define the permitted setup, checks and any required testing. Follow equipment instructions and site procedures, including suitable edge protection and safe strap removal.
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Check the result through handling
Assess the joint, strap condition, carton edges and any change in tightness over the agreed period. Record failures and rework. Review the transport restraint plan separately.
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Measure the packing process
Record metres used, joint consumables, completed packs, application time and interruptions. Compare the same load family and use the same cost basis for both options.
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Keep the approved combination
Retain the strap SKU, closure, equipment settings, pack description and approval owner. Repeat the assessment when the consumable, equipment or load changes.
Compare the cost of the work
Look beyond the price per strapping roll
The examples contain 1000 m, 3000 m and 1,100 m per roll. Comparing their roll prices alone would overlook different supplied lengths, dimensions and application methods.
First compare like-for-like purchasing units. Divide the quoted strap cost by supplied metres, keeping GST treatment and freight allocation consistent. Then measure how much material and labour the approved packing method uses.
strap and joint consumables used ÷ acceptable packs completed
Include material consumed on failed joints and rework. Track labour, interruptions and equipment costs separately so the comparison stays clear. A lower price per metre only helps if the complete packing result meets the agreed requirements.
For repeat orders, provide the expected quantity, current SKU and delivery postcode. Use the current quote or product page for pricing rather than an old article or a different pack quantity.
Frequently asked questions
PP and PET strapping buying questions
What is the main difference between PP and PET strapping?
PP is polypropylene and PET is polyester. PP is commonly selected for cartons and lighter bundling. PET is commonly considered for more demanding pallet work where strength and retained tension matter. Select by the exact grade, load and joining system.
Is PET strapping stronger than PP strapping?
PET is generally selected where higher plastic-strap strength is needed, but compare the specified grade and dimensions. The products shown here have different widths and thicknesses, so their ratings do not establish a universal material strength ratio.
Can I use PP strapping on pallets?
Some PP products are listed for lighter pallet applications. Suitability depends on the actual load and approved packing method. A general palletising description does not establish a weight limit or replace a transport restraint assessment.
Can the same tool apply PP and PET strapping?
Only where the equipment explicitly supports both materials and the selected strap sits within its width, thickness and other operating limits. Confirm joining compatibility and the correct settings before changing consumables.
Can hand strapping replace machine strapping?
Do not assume it can. Match the strap grade, roll format and core to the machine's specification. The hand and machine PP examples here are both 12 mm wide, but differ in thickness, roll length and supply format.
How do I choose a strapping width?
Start with the required pack performance and compatible equipment. Compare width together with thickness, stated strength, joint and load edges. There is no universal rule that one width safely secures every pallet of a particular mass.
Build a useful shortlist
Compare the material, then confirm the complete setup
Explore Pacific Packaging Australia's PP and PET strapping with your load, equipment and required quantity in view.
Send the details that affect the choice
Contact Pacific Packaging Australia with the goods being packed, pack dimensions and mass, current strap SKU, tool or machine model, joining method and any issue you need to resolve. Add your order quantity and delivery postcode for a relevant purchasing discussion.