Polyolefins are soft shrink films with a feel similar to that of your standard Ziploc-type sandwich bag. There are two processes by which polyolefin is manufactured, the latest of which is a method called cross-linking. Cross-linked polyolefin yields a stronger, more puncture-resistant film than shrink packaging produced by the old method. It's more expensive than standard films and is usually sold under the PREMIUM FILM designation. Polyolefin, an FDA-approved-for-food-contact film is breathable, freezable, microwaveable and allows the scent through the film WHETHER PERFORATED OR NOT.
We originally perforated many of our film selections for the benefit of our many goat's milk and dairy-based soapers, whose bars need to "breathe" (to avoid rancidity from any dairy components). While these perforations allow the scent through quickly on wrapping...given a day or so, the scent of the soap will still come through the non-perforated polyolefin films as well. Another reason many of our soapers, even those not using milk in their recipe, prefer the perforated films is that the perforations allow any air trapped in your package to escape. Sometimes, without the pinholes, if you perfectly seal a bar of soap, it will trap the air in the package as well...and puff up like a little pillow as you shrink it down. The technique to resolve this minor issue, is to squeeze the bar as you handle it normally for shrinking. The air will find a way out, while other than squeezing the bar, you haven't really done anything extra, or taken any extra time.
If you'll be wrapping individual bars only, 60 gauge is the film of choice. (Just to give you some perspective on the film, Apple uses 60 gauge film wrapping iPads). Thinner, easier to cut and seal and quicker to shrink than any of the other films, this film is available in standard, perforated and Soft Shrink varieties. Soft shrink polyolefin is a special formulation that requires less heat to shrink down, a big plus for wrapping butters and other heat sensitive items, and it exerts less force during the shrinking process...so if your decorative bars feature delicate designs, like the petals on a soap rose...or you make shaped soaps, like pie slices, muffins etc, you might want to opt for this variant of 60 gauge film as it conforms to shapes better than other films.
If you've "gone green" there is a 60 gauge (only!) biodegradable film, Biolefin™ , that will serve the same purposes as standard film, but take 90% less time to degrade in the environment, and in a landfill situation, it will decompose into biomass in a span of 3-5 years. It's available perforated or not, and, as do all polyolefins, allows the scent of your soaps through whether perforated or not.
Very strong, multi-layer film. Puncture resistant. For general packaging, bundling, multi-packs & irregular shapes or sharp edges & corners. Acid Free, FDA approved for direct food contact. Best for paper products, books & artwork. Use 60 gauge for baked goods. Matte finish, very soft & flexible. Yields to pressure. Resists breakage. Recyclable. Allows scent to pass through.
****Our favorite shrink wrap system here at Candle Cocoon! We sell it because we believe in it!