Stretch Packaging

Stretch packaging is attractive, lightweight, and cost-effective

In stretch carded display packaging (Stretch Pak), Surlyn® shows products clearly for maximum shelf appeal, helping increase sales. It offers outstanding gloss and transparency for superior shelf appeal, imparting brightness to both matte and semi-gloss printed boards. It also allows a low ratio of packaging to product, which can provide substantial savings in product transport, while reducing waste.

Stretch Pak Design Options

Stretch Pak films made with Surlyn® ionomer resin give visual packaging more design options, including:

  • One-Sided Frame View: Similar to surface-seal blister or skin packages, the opening can conform to the product’s shape or be designed as a generic shape. Ideal for use with similar products of different sizes and shapes.
  • See-Through Frame View: The product “floats” in the middle of the card so that it can be seen from either side. Also ideal for use with similar products of different sizes and shapes.
  • Two-Sided Stand-Up: Replacing standing fold-over blister and clamshell packages, this design provides superior standing performance and prevents the product from moving within the package. Ideal for incorporating promotional items.

Surlyn® for Stretch Pak Production Advantages

Stretch Pak also helps make packaging production more efficient:

  • It shrinks tight to conform to even the most oddly shaped products.
  • It permits fast throughput and line speeds, for easier processing at higher packaging yields.
  • Products can be packaged in single or multiple units, or in a premium version, without interfering with production.


Surlyn® Performance Properties Enhance Visual Packaging

Because of its unique bond between the polymer chains, carded display packaging using skin and stretch packaging films containing Surlyn® offers many performance benefits, including:

  • Faster Processing: Surlyn® absorbs infrared heat at about twice the rate of PE. Its ability to soften more quickly in the heating phase speeds up the whole packaging process, allowing around 40% more packaging cycles in the same time frame.
  • Better Puncture and Abrasion Resistance: Films made of Surlyn® are not easily punctured by pointed objects and sharp edges, especially during the critical forming stages of the packaging cycle.
  • Tamper Resistance and Improved Product Security: Films made with Surlyn® are highly resistant to tampering. It is very difficult to remove the product from its package without leaving obvious signs that the package was compromised.
  • Better Resistance to Board Curl: Compared with LDPE, Surlyn® has a higher shrink force in the molten phase, for perfect draw, but a lower shrinkforce in the solid state. This eliminates unsightly board curl and prevents objects from being deformed.
  • Better Chemical Resistance: Films made with Surlyn® resins are resistant to grease and oil, which are often used for packaging of industrial parts such as bearings and tiles, and it will not corrode unplated metals.
  • Better Resistance to Aging: Films made with Surlyn® do not become brittle with age, even when packaging the heaviest products.
  • Cold-Weather Durability: Films made with Surlyn® retain all their properties down to -40 °C, minimizing low-temperature impact breakage during transit and storage.
  • Excellent Adhesion to Primed and Non-Primed Board: Surlyn® provides outstanding adhesion to primed board, and Surlyn® co-extruded with highly transparent Bynel® adhesive resin provides outstanding adhesion to non-primed board.

Sustainability Advantages

Skin and Stretch Pak films made with Surlyn® offer significant weight and volume reduction compared to traditional rigid blister or clamshell packs. Because of its outstanding toughness and formability, Surlyn® makes downgauging easier, helping reduce packaging volume during transit. And by using less film overall, visual packaging manufacturers can reduce their source material usage.