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how to choose the best stretch film for the job
Assemble the product into a unit-
Usually on a tray. --
This makes packaging and transportation both efficient and economicaleffective.
The unification of products reduces the processing cost and saves time.
It ensures a safer and more efficient distribution process while protecting the product from damage and theft.
Applying stretch film is one of the most common and safe ways to achieve this.
The goal of choosing the best stretch film is to find the stretch film that suits your company\'s specific needs without paying for the property that is not required.
For example, goods that spend most of their time in warehouses or containers do not require a film with UV protection.
On the other hand, the light Film load that does not fit closely with the corner of the tray will be affected by the punctured film and the moving load.
But if you \'ve never used stretch film before, or are not happy with the film you\'re using, how do you know which one is right?
Here are 6 Considerations for choosing the best stretch film for work.
Main cost comparison: Price/pound. vs. Price/ft. vs.
When talking to stretch film salespeople, trying to figure out how their products compare with the products that consumers are currently using can be confusing.
All the movies are sold in pounds.
Traditional films that usually have higher specifications are actually cheaper per pound because they use cheaper plastic resin to make the film.
High Performance Films are more expensive because they are made with better quality resin and can be layered.
This is a more expensive manufacturing process.
The overall cost of a high-performance film is usually low, as the light weight of the film offsets the more expensive price per pound. However, what really matters to consumers is the cost of a film per foot.
What is more important than the cost per foot is the cost per package load.
The argument for newer high-performance films is that even if they are expensive to make (
More per pound)
They are lighter in weight and therefore lighter in weight.
For example, to replace 80-
Measuring the manufacturing cost of a conventional film may increase by 20%, but maintaining the load may require a 50% reduction in the film as it is as effective as a 50% thick material.
Results in this case, the user can save 30% of the cost of the film transferred to a thinner high.
Package two loads for accurate analysis of price savings.
The film is then cut off from both loads and weighed on a small sensitive scale.
This will indicate the amount of film used for each load.
Then multiply the weight of the movie by the price per pound (
If not clearly marked, ask about the weight of your salesperson roll or the weight of the case)
Divided by the price of the roll or box.
This will generate the price for each load.
Multiply the price of each load by the number of typical loads such as daily, weekly, etc.
Because there are so many variables in the movie, users must be very cautious when they understand and confirm mathematics, and do not rely on the mathematics of the sales staff.
Part of this process should be to fully sample new materials before accepting any changes.
The bottom line is that new materials must hold loads as safely and efficiently as old materials.
Here are four additional considerations for choosing a stretch film. 1.
This is the most important decision so far.
Most of the decisions will be based on the price, but need to be moderated according to the requirements of the work.
Not long ago, before the emergence of highly innovative stretch films, gauge (thickness)
Is the only important thing.
Now, this is just one of the many considerations. Standard/true-
The measurable stretch film provides a great deal of stretch, tear resistance, and strength.
The main drawback is waste, as it is not possible for ordinary workers to exert enough force to reach the maximum stretch potential of the film.
The economic/Micron stretch film is from real-
Stretch Films are measured, usually in 57, 60, or 63 specifications.
The main difference is the thickness and quantity of the tensile potential.
It\'s usually harder and doesn\'t stretch like it\'s realgauged film.
On the other hand, it is powerful, more affordable and can produce less waste.
A mixed/multi-layer stretch film is usually used instead of a lighter film.
It is manufactured in 47, 51 and 53 meters.
It has more multi-layer, harder and less tear resistance than Micron stretch film.
Benefits include: lower cost, lighter roll, less physical strength required during the application.
Latest and greatest lightergauged (less expensive)
High performance film is ideal for light to medium, regular
It will not encounter a molding load with challenging transportation or storage conditions.
High performance stretch film with excellent load holding capability, high elastic film recovery capability, high
Strength Formula and downcast neck-down.
In the high performance category, even the optical film gauge has a high tear resistance and puncture resistance, as well as excellent adhesion performance.
However, if any or combination of these conditions exists, it is heavier (more expensive)
Traditional movies will be a better choice and will save money in the long run (
Less risk of worker injury and load damage).
Traditional films are considered foolproof and often lead to fewer complaints from warehouses.
Their application accuracy is not important because the weight of the film may help to offset the poor application of the worker.
Consider carefully the type of load and even the skill level of the warehouse staff.
Generally speaking, in a well
Control environment with good cubed load with low price
Performing movies can save money. 2.
Manual movie or machine movie-
The dispenser that holds can be as cheap as a few dollars, and completely-
The cost of automatic packaging is up to $1,000.
The general rule is that if the consumer packs 15 or more goods per day, the cost will be higher
Using the machine is more efficient than manual packaging.
At this level, the cost of the machine is justified by reducing labor costs and the possibility of injury.
In addition to productivity and liability issues, most machines pull at least 200% before applying stretch packaging to the load.
This allows a reasonable savings of up to 50% on film costs.
A company that traditionally uses a full set of handmade film per month may reduce its usage to 6 pallets per year.
This saving on the film can quickly pay for the equipment.
And a machine.
The load of the package is usually safer than the handwrapped load.
When the machine applies stretch film: productivity increases labor costs reduce damage reduce packaging is consistent quality control better use less film because for companies that handle 15 or more loads, the film stretches well every day, and a stretch packing machine will pay more than itself.
Here is a summary of the hand and machine options.
Manual/manual packaging extension core: the extension of the film core creates a natural handle for the packaging.
Since it doesn\'t require any equipment, it\'s a particularly economical option.
The downside is that it has little control over the stretch and is difficult for the worker.
Mechanical Brake/Rod packaging: rigid structure supports the film core while the mechanical brake system provides the resistance required to stretch the film.
In addition to the roll being located at the end of the extended rod, the rod wrapper is similar.
This reduces the need for workers to bend and contact during application. Semi-
Automatic Packaging • turntable packaging: the load is located on the turntable of the rotating load.
When the film roll is applied for packaging, it moves up and down automatically.
Stretch pre-rotation speed by load and/or additionalStretch function.
Rail wrapping paper: film is placed in a carriage mounted on a vertical ring.
Horizontal feed of load (
Or vertical in the case of a horizontal ring system)
When the film is applied, through the center of the rotating ring.
Rotary arm wrapper: When the rotary arm rotates around it, the load remains stationary when it is packed.
These types of wrapping paper are best suited for light loads or for packages that require high-speed rotation, otherwise the load is unstable.
Automatic packaging similar to semi-packaging
In addition to the delivery system that includes automatic loading, the automatic wrapper.
The equipment is also suitable for sealing and film cutting. 3.
There are two basic ways to make stretch films---blown and cast.
The performance of the film is determined by the manufacturing process.
The blown film is made using the blown film extrusion process.
The resin melts and blows out in huge bubbles and aircooled.
This is a slower one (more costly)
But the quality is higher.
Features: super strength, stretching, film memory, puncture resistance;
But when relaxing, the clarity is very poor and the noise is very loud.
It has superior strength to accommodate irregular loads.
The casting film is made using the casting extrusion process.
After cooling, the film passes through the cooling roller.
This makes the cooling process faster and the product cheaper, but it is not as good as blowing in important aspects such as strength and stretching.
Typical features of the cast film are: clear, high gloss, quiet unfolding, consistent adhesion, and consistent film thickness.
The following is a summary of the differences between blowing and casting stretch films: Strength: blowing is slightly stronger than casting and is unlikely to tear at sharp edges.
Film yield: since the manufacturing process is less controlled and precise, the blown film usually tops with a tensile capacity of 200%.
Some of the newer performance films can reach 300%.
• Movie memory: better movie memory (
It is better to shrink to the original size after stretching).
Less Cast memory (
This will cause the load to shift).
• Load hold: blow hold better and do not stretch after application.
When cast keeps the load well, it stretches after it is applied to the tray (
This also causes load offset).
• Puncture resistance: blowing puncture resistance is much better than casting, and casting usually tears when it is exceededstressed.
Blow more tolerant on sharp edges.
• Visual clarity: unclear blowing.
This can make reading and scanning more difficult, but it helps to reduce the glare of distractions. Cast is clear;
Easy to read and scan under typical warehouse lighting.
• Rewind noise: when spreading out from the roll, the sound blown out is often very loud.
Cast has little noise.
Close to the film: blow one-sided cling-
This will generate higher load hold.
Cast has a natural snug on both sides.
This allows the tray to stick together.
However, 1-sided cling.
Due to low strength and thin film memory, cast is best suited for lighter loads in standard shapes.
It\'s often cheaper than blowing-
This makes it a good choice for low requirements high production applications. 4.
Standard or pre-StretchedPre-
The stretch film is stretched at the factory near its final breakpoint and then wrapped around the roller.
This means that this film does not require almost as much physical energy as the standard stretch film does.
This is pre-
Stretch Film is very popular for manual packaging. In fact, pre-
The hand-applied stretch film can produce the same load stability as the machine application.
The roll is also very light and easy to handle and can be applied on foot
Forward packaging technology helps prevent slip and fall accidents.
Basically, the user gets the same (or better)
Stabilize the load with less products, less physical energy and greater control. While pre-
Stretch film is more expensive per foot than traditional film, it takes about half the amount of film, which can save net cost (
The film is much lighter and therefore much cheaper per pound).
Another benefit is pre-
The film will naturally tighten after stretching.
This unique trend of film memory and tightening after its application is pre-Stretch Film.
Most meaningful work for pre-
Stretch Film for manual application-
Especially in places where workers do not have the power to handle or tighten conventional film and/or where workers handle loads with irregular shapes. Pre-
The stretch film should be used for a load of no more than 1,200 pounds because it is usually stretched too thin to withstand heavier loads.
It can be applied by hand or by automatic machinery.
Companies that position themselves as green can use pre-
Stretch the film because it requires fewer products.
In addition to the four considerations mentioned above, there are some professional qualities that are very beneficial to some applications: Ventilation: common applications include anything that requires heat and moisture in order to avoid corruption, such as agricultural products and other foods.
Color/printing: it is easier to identify products and on-site tampering using stretch films of various colors or printed.
Also great for product coding and dating.
Bundled film: 2 \", 3\" and 5 \"in width and replace the tape and rope.
It has the advantage of not leaving sticky residue or string marks.
It\'s best to pack small items together. • VCI: Vapor-corrosion-
The tensile film is suppressed to block moisture and contaminants, thus preventing rust and corrosion.
This is excellent for products that come into contact with water and other Rust/corrosion promoting substances-
Including typical rain and salt water steam near the seaside pier.
UVI: users who store the loaded tray outside at any time will need UV-proof film.
However, the time for UVI films to provide protection before UV performance starts to decrease varies (usually 3-12 months).
You should be fairly sure what you need so far, but may need a little confirmation.
Where can you go for just advice?
Find an industrial packaging supplier that has been in the business for many years and is relevant to your satisfaction.
A good packaging supplier will want to build a long term
Term relationship based on trust, not fast sales.
So call us now and seek advice from experts that will lead to immediate and long-term
Long term cost savings.