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Stretch Film Information
What is Stretch Film?
Stretch film is a plastic film used to secure, bundle, and stabilize products. Stretch film is made from linear low-density polyethylene. When applying the film is to be pulled and stretched around products to obtain tight and secured product loads. Stretch film comes in a variety of widths, thicknesses, and colors.
Types of Stretch Film
*Hand Stretch Film- Most of our hand film comes with a standard 3" core that will fit most any hand dispensers. Choose everything from clear to colored and even anti static stretch wrap film.
*Extended Core Stretch Film- Offers built in handles that are great for companies that need to wrap something on the go. The built in handles are ideal for low volume out put or mobile stretch wrap applications.
*Bundling Stretch Film- Considered any film roll between 2-5 inches in width. Bundling film is a great alternative tape and plastic strapping for bundling multiple products together.
*Machine Stretch Film- Our machine pallet stretch wrap is offered in true standard gauged film as well as pre stretched and equivalent film. All of our machine film can run on stretch wrap machines with up to a 250% stretch.
*Vented Stretch Film- Ideal for allowing products the ability to breathe. Vented stretch film is an 80 gauge stretch film with die-cut holes allowing products to breathe when palletized. Ideal for allowing wood to cure and moisture to escape from fully loaded pallets.
*Colored Stretch Film- We offer transparent and opaque colored stretch film ideal for a variety of applications. Companies use transparent stretch film to color code loads to make for easy identification during shipping. Opaque film is often used to conceal load and protect shipments from UV light.
Stretch Film Thickness Indicators
True Gauged Stretch Film- For years, companies have used "true gauged stretch film" a product that offers a great amount of stretch, cling, and strength. Overtime this stretch wrap has become more expensive because it is thicker and uses more petroleum based resins during the manufacturing process. This increase in price has encouraged manufacturers to find alternatives to keep costs lower. The term for alternative pallet wrap is "equivalent stretch film".
Equivalent Stretch Film- An affordable alternative to "true gauged film". Equivalent films use a different resin mixture along with multi-layering to produce a thinner, stronger product that uses less petroleum base. We offer two equivalent hand films that offer a great hold, good stretch, and one sided cling at an affordable price. Our two equivalent hand films are: Hybrid & Micron. The main difference between the two are the number of layers and the resin formulas. Hybrid rolls are thinner and made of more layers during the extrusion process. Micron rolls are in between the true gauged film and the hybrid stretch film thickness. It does not offer as many layers, but does have more stretch than the hybrid film. It also offers better tear resistance.
How To Wrap a Pallet With Hand Stretch Film
The main goal of wrapping a full pallet load of products is to stabilize the products on the pallet to prevent product damage during transportation.
Pallets that differ in weight and height can change the amount of film needed. Another factor is the type of stretch film being used. This will directly determine the amount of film needed as well as the amount of braking tension needed by the user.
For the video above, the user is wrapping a small 48 inch high pallet weighing less than 800 lbs. The film being used is a 63 ga. hand stretch film with extended core handles. See the step-by-step guide below.
1. Tie stretch film to corner of pallet.
2. Begin bottom revolutions by wrapping the bottom of the boxes and the pallet while pulling the film to reach maximum stretch and hold tension.
3. Wrap multiple revolutions around the base of the pallet. The heavier the pallet the more revolutions will be needed.
4. After multiple revolutions are made around the base of the pallet slowly work up the pallet moving up half the film width each revolution.
5. Once the top of the pallet is reached wrap multiple revolutions around the top of the pallet for stabilization.
As stated above, the type of stretch film being used, the height of the the pallet and the weight of the pallet will all determine the amount of revolutions needed to correctly stabilize a pallet load.
We offer discounts on price and shipping for skid orders, call sales or fill out our quote form for discount pricing! We will contact you promptly with a quote. We also offer a large variety of printed stretch wrap options. Call us for a printed quote.
Stretch film conversion is a process commonly done after the extrusion of stretch film. The conversion process enables end users to have a variety of width and [...]
Stretch Film Terms
Asymmetrical Load-An unevenly aligned pallet load. Asymmetrical loads are more prone to toppling than symmetrical pallet loads.
Blown Stretch Film-A stretch film derived from the blown extrusion process that has a greater puncture resistance. Click on the stretch film info page to view detailed information about blown stretch film.
Bottom Wraps-The wraps a stretch wrap machine uses to apply film to the bottom section of the load. Forming a strong bottom wrap will help to ensure load stability.
Cast Stretch Film-A stretch film derived from the cast extrusion process. Less manufacturing costs allow cast stretch film to be the more widely used stretch film. Visit the stretch film info page to view detailed info about cast stretch film.
Cling-Allows the film to stick to itself and not the product. Some films have one sided cling and others have two sided cling.
Co-extrusion-Extruding two or more materials through a single die to enable the two materials to merge together.
Dart Drop-A commonly used test to measure puncture strength of a stretch film. It is conducted by dropping a semi-circular shaped object onto the film.
Elastic Recovery-The ability of a stretch film to recover to its original shape after being stretched.
Elmendorf Tear-Another common test used for stretch film and other products to measure tear resistance.
Extruder-Equipment used to change solid polymers into molten polymers.
Film Feed-In a stretch wrap machine, it is the speed at which stretch film is supplied to the load.
Film Force-Refers to the amount of tension applied to the film as the film is applied to the load.
Film Memory-The ability of the film to return to its pre-stretched form. This enables the film to maintain a tight load during transportation.
Film Tail-The start and end pieces of stretch film applied to the load. Generally these pieces are cut off later
Gauge- A measurement used to measure film thickness or caliper. One gauge is equal to .254 microns. Microns are another common form of film measurement.
Gloss-The amount of light reflected from a film’s surface. Cast stretch films tend to have a higher gloss than blown stretch films.
Haze-Refers to lack of clarity in a film. Blown stretch films commonly have more haze than cast stretch films due to crystallization during the manufacturing process.
LLDPE Stretch Film- Linear Low Density Polyethylene stretch film. A plastic that is preferred in a variety of film due to its toughness, stretchability, and relative transparency.
Metallocene-A compound used to make a new form of stretch film. Metallocene stretch films offer increased puncture resistance and many other useful benefits.
Microns-A unit of measurement commonly used to measure the thickness of a film. A micron is equal to one millionth of a meter. One gauge is equal to .254 microns.
MSDS Sheet-Stands for Material Safety Data Sheet. A detailed list of information about a specific product and potential saftey hazards the product may have.
Over wrap-The amount of stretch film applied over the top of the load. It is used to provide a downward force on the load.
Pallet Covers- A poly film cover used to protect pallets from dust, UV rays, and conceal the load. Feel free to check out the various pallet covers we offer.
Post-stretch-Stretching a film when wrapping the load to achieve tighter tension on the load
Pre-stretch- Stretching the film before applied to loads. Pre-stretch films can result in improved load integrity and lower packaging costs.
Roping-Bunching the stretch film into a rope shape. Roping used to start many loads and offers an increased strength for additionally securing a load.
Symmetrical Load-An evenly aligned pallet load with flush sides.
Tackifiers-Additives used in the manufacturing process to add cling to the film.
Tear Resistance-Refers to the resistance of the film to tearing forces.
Tension Stretch-A pulling force that stretches the materials
Wide Web Stretch Film-A large sized film used for larger equipment. Generally it refers to machine stretch film wider than 30 inches
Yield Strength-The amount of stretch a film can have without permanently deforming.