Packaging irregularly shaped products is effectively addressed using heat-shrink films. Various film types are available to cater to different needs.
Idpe shrink films for packaging
Shrink films are primarily made from low-density polyethylene, hence termed LDPE shrink films. They are produced in diverse versions, accommodating a wide range of product shapes and sizes.
Low-density polyethylene film is not only cost-effective and user-friendly but also environmentally benign, releasing no pollutants during use, recycling, or disposal. It is fully recyclable. LDPE film typically softens between 80°C and 100°C and melts between 109°C and 130°C.
Here are the main types of shrink film:
1. “Flat” shrink film
This type of heat-shrink film is a strip wrapped around a tubular mandrel for easy rollout. It comes in various lengths and widths to fit different product dimensions.
2. Heat-shrinkable film with uv protection
LDPE isn’t naturally UV-resistant. For sun-exposed storage, opt for a film treated with UV-absorbing agents. However, the effectiveness of this treatment lasts only 12 to 18 months.
3. Fire-resistant shrink film
Incorporating specific agents like antimony or aluminium trihydrate during extrusion enhances the film’s fire resistance and helps delay flames. This resistance is permanent.
4. Translucent or opaque film
This heat-shrinkable film appears milky initially but becomes more transparent upon heating, allowing closer monitoring of the packaged contents to detect any damage or theft.
5. Shrink tubing, flat or gusseted
For smaller products, sleeves packaged in rolls are suitable. They form a tube of variable diameters, which can be optimized with bellows. Sleeving can be used to create covers by sealing both ends.
Packaging goods of different shapes and sizes
Goods of varying shapes and sizes should be evenly distributed on a pallet for ease of handling with a pallet truck. Strive for a balanced container formation.
When products differ significantly in shape, consider adding padding for impact protection. For heavier goods, reinforce assembly stability with strapping made from materials like polypropylene, polyester, nylon, or steel.
Wrap the assembly in multiple layers of LDPE shrink film to form a cohesive block. The heat gun flame renders the film malleable, allowing it to shrink and conform to the contents’ irregular shapes before hardening.
Your pallet is now ready for movement.
