PE Shrink Film
Polyethylene Shrink Films (PE)
Polyethylene shrink film, made of polyethylene, has found a unique place as a key strategic solution for the protection, stabilization, and visual enhancement of products. This polymeric material, considered a thermoplastic, polyethylene shrink film creates significant innovation in traditional packaging methods with its unique heat shrinkage capability, enabling various industries to present their products to the market with greater safety, efficiency, and appeal.
Difference Between PE Films and PE Shrink Films
The main difference between these two plastic films lies in the method of packaging products. As explained in the plastic shrink film article, shrinkage generally occurs through the application of heat, allowing the film to contract around the product and take its shape. This is also applicable to PE shrink film. However, there are additional differences between these two films, which we have addressed in the table below.
| Feature | PE Shrink Film | PE Film |
|---|---|---|
| Shrinkability | Shrinks tightly around products when heat is applied | Does not shrink with heat; maintains original shape |
| Application Method | Requires heat source (e.g., heat tunnel or gun) | Applied manually or with machines without heat |
| Primary Uses | Packaging for bundling items, protecting goods during transit | Wrapping pallets, covering surfaces, general protection |
| Thickness Range | Typically thicker (up to 1200 gauge) for durability | Varies; generally thinner and more flexible |
| Clarity | Lower clarity; more opaque | Higher clarity; more transparent |
| Elasticity | Less elastic; conforms upon shrinking | More elastic; stretches to wrap items |
| Cost | Generally more expensive due to specialized use | More cost-effective for general applications |
| Recyclability | Recyclable; depends on material and local facilities | Recyclable; widely accepted in recycling programs |
Types of PE Shrink Films
Bundling Shrink Film: This type of shrink film is used to bundle and package several small products together as a single unit. It is often used for packaging consumer goods and small items, such as detergents, bottled water, etc. This type of packaging is carried out by bundling shrink film.
Pallet Shrink Wrap: This type of shrink film, which is usually thicker and more durable than the previous one, is used for packaging and stabilizing goods stacked on pallets. This film is employed for packaging industrial products that require greater strength. Its main objective is to protect goods from moisture, dust, and physical damage during storage and transport.
Features of PE Shrink Films
High Resistance to Tearing and Punctures: The molecular structure of polyethylene and its production process create a robust network of polymer chains. This structure enhances the film’s resistance to mechanical factors, preventing tearing under high pressure.
Excellent Clarity: The use of specific grades of polyethylene and precise control of the production process, especially during the extrusion phase, allows for the production of highly transparent film. This clarity aids in better visibility of the product within the packaging.
Resistance to Moisture and Dust: Polyethylene is inherently a high-quality water-repellent; water droplets slide off it, preventing accumulation. Its polymeric structure minimizes moisture penetration. Furthermore, the tight packaging from shrink film prevents dust from entering the product.
Stretchability and Flexibility: The elastomeric nature of polyethylene and the ability of its polymer chains to be stretched and return to their original state provides flexibility to this film. This feature allows the film to easily wrap around products of various shapes.
Recyclability: Polyethylene is a thermoplastic, meaning it can be melted down and reused to produce new products. This characteristic helps reduce environmental impact.
Applications of PE Shrink Films
Food Industry: Packaging for bottled mineral water, soft drinks, oils, canned goods, dairy products, and even some fruits. Shrink film helps maintain hygiene and prevents tampering with products.
Pharmaceutical and Health Industry: Packaging for boxes of medicine, cosmetics, tissues, and various hygiene products. This helps ensure the health and safety of products until they reach the end consumer.
Construction Industry: Packaging for bricks, concrete blocks, tiles, ceramics, profiles, and pipes. This film protects these products from moisture, dust, and physical damage during transportation and storage.
Printing and Publishing Industry: Packaging for books, magazines, and paper bundles. PE film protects paper products from moisture and tearing.
Additional Information of PE Shrink Films
| Property | Value | Test Method |
|---|---|---|
| Thickness | 50 µm ± 5% | PPI-2 |
| Grammage | 46.5 g/m² ± 7% | PPI-3 |
| Shrinkage (MD/TD) | 62% / 20% ± 7% | ASTM D-882 |
| Dart Impact Resistance | ≥ 130 g | ASTM D-1709 |
| Chemical Resistance | No effect with 5% Sulphate or Chlorate | - |
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