Ethafoam STPE200 packaging foam can be considered for industrial packaging where equipment, components or assemblies need more structured support than soft flexible foam provides. Ethafoam industrial packaging can include support pads, separation layers, end blocks, crate lining and protective barriers, but the material must be designed around the load rather than selected from weight alone.
For valuable or critical equipment, packaging should be treated as a complete system and tested where the project requires it.
What makes industrial packaging different?
Industrial items often create packaging challenges that are less common with light consumer goods.
Examples include:
- higher weights
- concentrated feet or brackets
- uneven shapes
- protruding controls
- sharp edges
- repeated transport
- long storage periods
- forklift or pallet handling
- vibration during road or air transport
- rigid crates with little natural cushioning
These factors can increase the load placed on individual foam supports.
STPE200 as a semi-rigid support material
All Foam supplies STPE200 as a semi-rigid, non-cross-linked expanded polyethylene packaging foam.
The current product data lists:
- nominal density: 24 kg/m3
- compression strength at 25%: 0.024 N/mm2
- compression strength at 50%: 0.081 N/mm2
- compression strength at 70%: 0.200 N/mm2
- water absorption after 24 hours: 1.19% by volume
- working temperature: -30C to +80C
- fire performance: not fire retardant
These values help describe the material. They are not a universal weight-to-thickness chart.
Why load distribution matters
A 40kg component with a broad flat base can load the foam very differently from a 40kg machine standing on four narrow feet.
The second item concentrates force into smaller areas.
Before choosing foam, identify:
- total item weight
- number of support points
- contact area at each support
- whether the support surface is flat
- whether the load shifts during handling
- whether the foam is continuously compressed in storage
The high load bearing packaging foam guide explains this principle in more detail.
Support the structure, not the vulnerable parts
Industrial components can include parts that look strong but should not be used to carry transport loads.
Avoid placing unnecessary pressure on:
- connectors
- switches
- instrumentation
- covers
- housings not designed as feet
- piping
- cable glands
- protruding brackets
- calibrated assemblies
Where possible, support robust structural surfaces and keep clearance around fragile parts.
Base pads, end blocks and side restraints
Different foam pieces can perform different jobs.
Base pads carry static weight.
End blocks can limit longitudinal movement.
Side restraints can prevent lateral movement.
Lid pads may control vertical movement but should not force the product down onto sensitive parts.
A good crate does not rely on one thick sheet placed under the equipment while the item remains free to strike the side walls.
How much compression should the foam have?
There is no single percentage that should be applied to every industrial pack.
Too little engagement can allow free movement. Too much permanent compression can reduce available cushioning travel and create high pressure.
The correct working condition depends on the item, impact environment, support area and foam performance.
For engineered or safety-critical packaging, use an appropriate packaging design and validation process rather than relying on a general blog rule.
Vibration deserves separate attention
A pack can survive a single impact and still perform poorly under repeated vibration.
Vehicles, machinery and freight systems expose packages to vibration over time. An item that can rock, resonate or repeatedly rub against a restraint may be damaged even without a dramatic drop.
Check:
- whether the item can rotate
- whether tall assemblies can sway
- whether cables or connectors can touch hard surfaces
- whether supports can loosen after repeated handling
- whether a lid or side block keeps intermittent contact
Critical equipment may require documented vibration testing.
Reusable industrial packaging
STPE200 can be considered for repeated transit supports where the material and layout suit the application.
A reusable pack should have an inspection routine.
Check for:
- permanent compression
- torn support faces
- crushed corners
- loose bonding
- contamination
- missing blocks
- distorted cavities
- changed equipment geometry
Do not keep using a pack simply because the outer crate still looks serviceable.
The Ethafoam reusable packaging guide provides a practical repeat-use checklist.
Moisture in workshops and transport
The current STPE200 data gives water absorption of 1.19% by volume after 24 hours.
That can be useful when packaging may encounter damp conditions, but it does not make the whole crate waterproof.
Consider:
- rain exposure during loading
- condensation
- workshop fluids
- cleaning products
- oils and greases
- wet floors
- storage humidity
If chemical exposure is important, confirm compatibility for the exact environment.
Temperature limits
The listed STPE200 working temperature range is -30C to +80C.
The complete pack may have lower limits because adhesives, tapes, labels, cases or wrapped components can behave differently.
Temperature-sensitive equipment can also require controls unrelated to the foam itself.
STPE200 is not fire retardant
The current All Foam STPE200 grade is not fire retardant.
If the packaging is going into a regulated environment, vehicle, aircraft, plant room or other controlled setting, confirm the required fire specification before ordering.
Do not assume an industrial foam automatically has a fire rating.
Electronics and electrostatic control
Industrial equipment often contains electronics, but standard STPE200 should not be assumed to provide a required anti-static or ESD specification.
The foam can provide physical support for suitable products. Electrostatic control is a separate requirement.
Read Ethafoam for electronics packaging if the project contains static-sensitive parts.
Ethafoam or AFP30/AFP45?
All Foam keeps STPE200 separate from the dedicated Closed Cell Foam Sheets range.
For some industrial applications, AFP30 or AFP45 may be a better fit when a rigid, dense closed-cell sheet or insert is required.
STPE200 can be useful when the project needs semi-rigid cushioning and support.
Read Ethafoam vs closed cell foam before choosing between the product families.
Quick answers about Ethafoam industrial packaging
Can Ethafoam be used under heavy equipment?
It can be considered for suitable support pads, but weight alone is not enough to specify the foam. Check support area, concentrated loads, required compression and the complete packaging design.
Is thicker Ethafoam always better for heavy items?
No. Thickness has to fit the available space and work with the load. Poorly distributed weight can overload a thick pad.
Can STPE200 be used in wooden crates?
It can be used for suitable pads, separators, lining and restraints inside crates when the material matches the item and transport requirement.
Is STPE200 fire retardant?
No. The All Foam STPE200 grade is not fire retardant.
Does STPE200 provide anti-static protection?
Do not assume it does. Static-sensitive products need the correct verified ESD packaging specification.
Information to send for an industrial foam enquiry
Provide:
1. item dimensions 2. item weight 3. photographs or a drawing 4. safe support points 5. contact area if known 6. internal crate or case dimensions 7. expected transport method 8. single-use or reusable requirement 9. environmental exposure 10. specialist fire or anti-static requirements 11. quantity
This allows the packaging requirement to be discussed around the actual job.
Design around the load
Industrial packaging succeeds when the load is supported in the right places and movement is controlled before the item can strike a hard surface.
STPE200 can be a useful semi-rigid packaging material, but the right thickness and layout depend on the complete system.
View Ethafoam STPE200 sheets or contact All Foam for non-standard pads, blocks, separators and converted requirements.
Related All Foam guide
For calibrated and delicate equipment, see our Ethafoam precision instrument packaging guide for support points, accessory restraint, clearances and repeat-service cases.
