![]() This characteristic is a measure of how much moisture will or will not travel through the film. Be sure to keep your shrink wrap stored in a cool (but not too cool) storage area to prevent any weakening of the film prior to use. ![]() Choose a shrink film that balances the security of your product with ease of access to the actual product. If you need to make this trade-off, select the characteristic that is more important (e.g., if you have a window box, puncture resistance is very important). Often, films with high resistance to puncture have lower resistance to tear and vice versa. ![]() This measures how hard it is to actually break the film, and how hard it is to tear the film once it has been punctured. High levels of free shrink allow you to get a better-looking package on difficult shapes and sizes. Free shrink is the amount of shrink-ability in a film before it makes contact with your product. Unfortunately, this isn't a tip to get free shrink wrap, but it's just as important. 40/40 30/30, 20/20.Īnother related characteristic is Free Shrink. In addition to altering your shrink percentages by using preferentially oriented film, you can also lower the shrink percentage and stay with a bi-axially oriented film e.g. The benefits of a preferentially oriented film include using less film and preventing product distortion. Preferentially oriented film shrinks differently in either direction. Bi-axially oriented films shrink equally in both directions (Machine Direction or Cross Direction).* Shrink films are either bi-axially oriented or preferentially oriented. These options and constructions have broadened over time to accommodate specific requirements for sealability, optics, toughness, slip, temperature, force, and memory. Shrink wrap film is available in a variety of types, thicknesses, clarities, strengths, and shrink ratios, which can be employed alone or in conjunction with one another to create the precise type of layering and protection for your product. When cooled properly, the film’s molecular characteristics are set, so it remains in this stretched state until sufficient heat energy is applied for the molecule chains to shrink back to their original form. More simply, the molecules reorient from their initial random pattern to ultimately fit the mold of their contents. When the film is warmed, the structureless regions of the chains are straightened and aligned to the direction of orientation. The molecules of a shrink film sheet or tube are randomly intertwined, meaning they are coiled and twisted with no particular alignment. So, how exactly does this happen? The science of shrink wrap can be explained in terms of molecular behavior. This process results in a clear, durable barrier of protection around the product. ![]() Heat is applied to the film – by either a conveyor heat tunnel or an electric or gas heat gun – which catalyzes the film to shrink tightly around the item placed within. Shrink wrap (also referred to as shrink film or shrink wrap) is a versatile polymer material used for the packaging of finished goods. This guide is a comprehensive source of information about shrink wrap for product packaging. To bring your products to the market with shrink film, this guide will give you all you need to know including what shrink film is, what it’s typically used for, what types are available, and how each benefits different products, how much shrink film costs, and whether it’s right for your business. Given the flexibility, durability, and other valuable advantages of using shrink film, many companies employ this option to package their products. ![]() You'll also be able to bring a layer of confidence to your consumer, and stand out with the protective shine of shrink wrap when applied appropriately! With just a roll of shrink film and a heating source, you have all the tools you need to waterproof, weatherproof and tamperproof just about anything, regardless of size. From the look to the feel to the longevity of your products, how well are your products comparing with similar products in the market? Shrinkwrapping is an easy process requiring two basic elements: the right kind of shrink film and heat. Bringing your product to your consumer needs to be an excellent experience. ![]()
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