5 Packaging Machine Mistakes That Cause Production Delays

By Keypack Engineering Team · Updated September 2026

Buying an automatic packaging machine is not only about choosing the right machine model. A packaging line can still experience production delays if the product, packaging film, filling system, production speed, or upstream and downstream equipment is not properly evaluated before the order.

In many cases, the delay starts before the packaging machine even arrives.

The good news is that most of these problems can be identified during the machine selection and quotation stage.

Here are five common packaging machine mistakes that can lead to delayed commissioning, unstable production, lower-than-expected output, or costly modifications.

Quick Checklist: 5 Packaging Machine Mistakes to Avoid

A packaging machine should be selected around the product, package format and real production requirements—not around a machine name or a single speed number.

1. Choosing a Packaging Machine Based Only on the Product Name

One of the most common mistakes is giving a supplier only a product name and expecting that to be enough to select a machine.

For example:

“We need to pack coffee powder.”

This describes the product, but it does not describe the packaging application.

Coffee powder can have different particle sizes, bulk densities, flow characteristics and aeration behavior. The required packaging solution can also change depending on the pack size, bag dimensions, film, target speed and required filling accuracy.

The same principle applies to other products such as spices, milk powder, sugar, rice, granules, sauces and pastes.

What information does a packaging machine supplier need?

At minimum, you should provide:

• Product type

• Product characteristics

• Target pack weight or volume

• Bag width and length

• Bag type

• Packaging film

• Required production capacity

• Filling accuracy

• Required automation level

• Special requirements such as nitrogen flushing or dust control

The filling system should be matched to the product rather than selected only because the machine is advertised as a “powder packaging machine” or “granule packaging machine.”

For example, powder products commonly require an auger filler, while free-flowing granular products may be suitable for volumetric or weighing systems depending on the application.

Why can this cause production delays?

If the filling system is not suitable for the product, the machine may need additional testing, adjustment or modification after delivery.

That can affect:

Filling accuracy → production stability → commissioning time → final output

The more complete the product information is before quotation, the easier it is to select a suitable packaging machine configuration.

2. Choosing a Machine Based Only on Its Rated Speed

A second common mistake is comparing packaging machines by their maximum bags-per-minute figure.

For example:

Machine A: 120 bags/min
Machine B: 80 bags/min

It may seem obvious that Machine A is better.

But rated speed is not necessarily the same as actual production output.

Machine speed can be affected by product characteristics, filling time, bag size, film performance, sealing requirements, changeovers, feeding stability and other equipment in the line. Industry guidance also distinguishes nameplate speed from sustained throughput and OEE, because actual production includes stops, quality losses and other operating conditions.

What should you calculate instead?

Start with your actual production requirement.

For example, if your factory needs to produce 30,000 bags per shift, the important question is not simply:

“How fast can the machine run?”

It is:

“Can this packaging line consistently produce the required number of good bags during a normal shift?”

Consider:

• Target bags per minute

• Working hours

• Product feeding time

• Filling cycle

• Sealing cycle

• Changeover time

• Cleaning time

• Planned downtime

• Product rejection

• Upstream and downstream capacity

A machine rated at a higher speed may not deliver better overall production if the filler, feeder or downstream equipment cannot keep up.

Choose based on realistic output

Rated speed = machine capability under specified conditions

Actual production output = what the complete line consistently produces

This distinction is particularly important when comparing automatic packaging machines for high-volume production.

3. Confirming the Machine Before Confirming the Film and Bag Type

The packaging film and bag format are not minor details. They directly affect how a VFFS packaging machine forms, seals and cuts the bag.

A vertical form fill seal machine uses roll film to form the bag, fill the product and seal the package in a continuous process. The film must therefore be compatible with the forming and sealing process.

What should you confirm before ordering?

At least these specifications:

• Film material

• Film structure

• Film thickness

• Film width

• Heat-sealing characteristics

• Bag width

• Bag length

• Bag style

• Printing requirements

For example, a customer may request a “100 g pouch,” but the machine selection cannot be based on weight alone.

A 100 g package could have different:

• Product density

• Bag dimensions

• Film structure

• Bag shape

• Sealing requirements

These factors can change the machine configuration.

VFFS or premade pouch?

This distinction should also be confirmed early.

A VFFS packaging machine forms bags from roll film during the packaging process.

A premade pouch packaging machine receives bags that have already been manufactured and then fills and seals them.

Choosing the wrong packaging format can lead to major changes in equipment selection, packaging material and production workflow.

So before comparing machine prices, confirm:

What bag do you actually want to produce?

4. Buying the Packaging Machine Without Planning the Complete Line

Another common mistake is treating the packaging machine as an independent piece of equipment.

In a real production environment, the packaging machine is usually only one part of the process.

A typical automatic packaging line may include:

Product feeding → Dosing/weighing → Packaging → Checkweighing → Metal detection → Conveying → Cartoning → Palletizing

If one part of the line is slower than the others, it can become the production bottleneck.

For example:

• The feeder cannot supply product continuously.

• The weigher takes too long to discharge.

• The packaging machine runs faster than the checkweigher.

• The conveyor cannot handle the required output.

• The cartoner cannot keep up with the finished bags.

In these situations, increasing the packaging machine's rated speed will not necessarily increase total production.

Why line integration matters

The goal should be:

The complete packaging line must work at a balanced production rate.

This is especially important when upgrading an existing production line.

Before purchasing a new packaging machine, check:

• Existing feeding equipment

• Product storage/hopper capacity

• Filling or weighing system

• Conveyor speed

• Inspection equipment

• Cartoning equipment

• Available floor space

• Electrical and compressed-air requirements

A machine that performs well by itself can still become a bottleneck when integrated into an unbalanced production line.

5. Not Confirming Actual Production Conditions Before Ordering

The fifth mistake is often the most expensive: selecting a machine based on a specification sheet without checking the actual factory conditions.

A packaging machine may meet your product and capacity requirements on paper, but installation can still be delayed if the production environment has not been properly prepared.

What should you confirm before ordering?

Product

Is the actual product the same as the product described during quotation?

If possible, provide a real product sample for testing.

Pack size

Confirm the exact target weight or volume and the expected bag dimensions.

Packaging film

Provide the actual film structure and specifications whenever possible.

Production capacity

Define your required output in:

• Bags/min

• Bags/hour

• kg/hour

• Units/shift

Do not rely only on a machine's maximum rated speed.

Factory space

Check:

• Machine footprint

• Working area

• Operator access

• Product feeding height

• Ceiling height

• Maintenance space

• Finished-product discharge area

Utilities

Confirm the available:

• Electrical power

• Voltage and frequency

• Compressed air, if required

• Other plant utilities

Cleaning and changeover

If you run several products or SKUs, cleaning and changeover requirements can significantly affect real production efficiency.

A machine that is technically capable of handling several products may still require additional cleaning, parts replacement or adjustments between products.

What Should You Confirm Before Ordering a Packaging Machine?

Use this checklist before requesting a final quotation:

Providing this information early can help the supplier recommend a more suitable machine configuration instead of simply matching your inquiry to a standard model.

How Can You Avoid Packaging Delays?

The five mistakes can be summarized simply:

1. Don't choose a machine based only on the product name.

The product's flowability, density, particle size, viscosity and other characteristics can affect the filling method and machine configuration.

2. Don't use rated speed as your only production target.

Calculate the actual output required by your production schedule and consider the complete line, not just the machine nameplate speed.

3. Confirm your packaging film and bag format early.

Film properties, bag dimensions and sealing requirements can affect VFFS machine configuration and packaging performance.

4. Plan the complete packaging line.

The filler, packaging machine, inspection equipment, conveyors and cartoning system should work together at a balanced production rate.

5. Confirm your real production conditions before ordering.

Product samples, pack sizes, film specifications, utilities, factory space and production targets can all affect installation and commissioning.

How Can a Packaging Supplier Help Reduce Project Risk?

A good packaging machine selection process should begin with the application rather than a machine model.

At Keypack, we evaluate the packaging requirements according to factors such as product type, pack size, bag format, target capacity and production conditions before recommending the equipment configuration.

Since 2013, Keypack has developed 130+ packaging machine models and exported equipment to 50+ countries. The goal is not simply to select a machine with a suitable specification, but to reduce the risk of choosing equipment that does not fit the actual application.

If you are planning a new packaging project, providing your product, target pack size, bag type and required production capacity is a good starting point for machine selection.

Frequently Asked Questions

What information does a packaging machine supplier need?

A supplier normally needs information about the product, target pack size, bag dimensions, bag type, packaging film, production capacity and required filling accuracy. Product samples and actual packaging film can also be useful when the application is technically sensitive.

Why can actual packaging speed be lower than rated speed?

Rated speed is normally based on specified operating conditions. Actual packaging output can be affected by product feeding, filling time, bag size, film characteristics, sealing, changeovers, cleaning, operator intervention and upstream or downstream equipment.

Can one packaging machine handle different bag sizes?

Many automatic packaging machines can handle a range of bag sizes, but the available range depends on the machine configuration, forming system and sealing structure. The required minimum and maximum bag dimensions should be confirmed before ordering.

What happens if the packaging machine does not match my product?

The machine may require additional testing, adjustment or modification. In some applications, an unsuitable filling system can also cause unstable dosing, poor accuracy or reduced production speed. Providing representative product samples before final machine selection can help reduce this risk.

Should I buy the packaging machine before planning the whole line?

For an integrated production line, it is usually better to plan the complete process first. Feeding, weighing, packaging, inspection, conveying and cartoning equipment should be evaluated together so that one machine does not become the bottleneck.

How can I avoid buying the wrong packaging machine?

Start with the product and packaging requirements rather than the machine model. Confirm the product characteristics, pack size, bag format, film, required output, utilities, available space and upstream/downstream equipment before comparing machine prices.

The biggest packaging machine mistake is often not choosing a machine that is too expensive—it is choosing one that does not match the actual production application.

A few minutes spent confirming the product, packaging format, production target and complete line can help prevent much longer delays during installation and commissioning.