Extruded polypropylene homopolymer manufactured in an ISO 9001: 2008 environment.
Polypropylene strapping is manufactured to strict dimensional accuracy with precision winding, straightness and high tensile strength. Machine grade polypropylene is purpose-made for fully automated packaging lines.
The strap however, can only be as strong as the join used to secure - it is therefore vital that the correct method of joining a strap for its given weightload is achieved.
Either by hand tool manually with metal buckles or a range of seals, friction weld joint, or heat sealed. Small packages can be secured using plastic buckles.
The following is for example purposes only.
Many factors can affect the result:
|The type of package being strapped||Rigid/compressible |
Friction between items
|The method of transportation||Internal/export |
|The type of seal |
Refer to tool/manufacturer for seal efficiency
|Plastic buckle/metal seal |
|Safety factor||1.5 - 2.0 of weight load|
As a rule of thumb; a safety factor between 1.5 & 2.0 is desired.
Total load weight = 500 kg
4 straps each of 300 kg breakload = 1200 kg
Seal efficiency 75% (Friction weld) = 900 kg
Safety factor = 900/500 = 1.8, between 1.5 and 2.0, so should be acceptable. Due to the many parameters that can affect the result, each unitisation can require different amounts and breaking strength of strapping.
The final specification is the responsibility of the applicator.
|Specifications||at a glance:|
|Width||9 - 32mm|
|Thickness||0.4 - 1.5mm|
|Quality||Hand grade to fully automatic|
|Elongation||14 - 20%|
|Colours||Many standard colours available. Please ask for any specifics required.|