Foam Glass Panel Shrink Packing Line: Stations, Film Selection and Film Use

Executive summary

Foam glass insulation panels are light and rigid, but their porous edges and corners chip if the stack shifts or rubs in transit. A shrink packing line covers the whole stack in film, seals it and shrinks it tight in a hot-air tunnel, so the panels travel as one closed block. This page covers the line stations, the film choices, how shrink compares with other panel packing methods and how to estimate film use.

Foam glass stacks are fed onto the roller conveyor. Film unwinds from the upper and lower rolls and covers each stack as it advances, and the sealing unit presses down to close the film around it. The covered stacks then pass through a heated shrink tunnel with circulating fans, and the line repeats the cycle every 20 to 30 seconds.

Table of Contents

• Why foam glass needs a closed pack
• How the shrink packing line works
• Line and film data
• Shrink vs other panel packing methods
• Film use per stack
• Selection checklist
• Safety
• Engineering FAQ
• Next step
• Related reading
• Sources

Why foam glass needs a closed pack

Foam glass is cellular glass: the surface is open and abrasive, and the corners break under point load. Loose panels rub each other in transit and shed fine glass dust. Straps alone concentrate their force on the panel edges and cut into them. A shrink pack resolves all three at once:

• Even compressive restraint. As the film cools after the tunnel, shrink tension clamps the whole stack on all sides, so the panels travel as one closed block with no internal rubbing.
• Edge and corner guarding. The film barrier takes the abrasion instead of the fragile perimeter, and no strap ever touches an edge.
• Weather and dust sealing. The closed envelope keeps out rain and site dust, and the flat film surface carries printed branding and product data.

How the shrink packing line works

1. Stack and feed: panels are stacked on the roller conveyor; sensors detect the stack and fix its position for the cycle.
2. Cover: film from upper and lower rolls meets in front of the stack and covers it as it moves through, top and bottom.
3. Seal: the sealing unit presses down and closes the film around the stack; the cutter separates the front and back seams.
4. Shrink: the stack passes through the tunnel, where high-velocity hot air circulation shrinks the film tight to the stack contour.
5. Outfeed: finished packs leave on rollers for palletising.

PLC and HMI control the line; sensors trigger the sealing, the PLC sets sealing temperature, and the front feed speed is adjusted so the conveyor indexes in step with the seal cycle — a pack every 20 to 30 seconds.

Line and film data

Foam glass stack length, width and height ranges are confirmed at quote; the door shrink model on the same platform packs objects 1,000–4,000 mm long. That shared platform adds photoelectric stack detection, a constant-temperature sealing and cutting system with a clean, smokeless seal, adjustable sealing height, adjustable conveyor and sealing widths, and cutting error protection [manufacturer rating].

Shrink vs other panel packing methods

For rigid foam panels, film sealing plus shrinking is usually the best fit: it is the only method listed that closes all faces under tension while staying a single automated pass.

Film use per stack

Film length per stack ≈ stack length + stack height + seal allowance. Film width ≈ stack width + stack height + overlap.

For a stack 1,200 mm long, 600 mm wide and 400 mm high, with 100 mm allowance:

• Film length per stack ≈ 1,200 + 400 + 100 = about 1,700 mm per stack
• Film width ≈ 600 + 400 + 100 = about 1,100 mm (example only)

At 150 μm this sets your film cost per pack; your film supplier gives the weight per square metre, and multiplying it by the web area gives the mass per bundle.

Selection checklist

1. Panel length, width, thickness and panels per stack?
2. Stacks per hour?
3. Film type and thickness, printed or plain?
4. Indoor or outdoor storage?
5. Inline with the panel cutter or stand-alone?
6. Palletising after the tunnel?

Safety

We design shrink lines to EN ISO 12100:2010 for risk assessment, EN 415-10 for packaging machine safety and EN 60204-1 for electrical equipment. The sealing bar and the hot tunnel are the main hazards; guards and safety doors cover them, and tunnel access is interlocked so heating elements are unreachable during operation.

Engineering FAQ

Q: Will heat damage foam glass? A: No. Foam glass is non-combustible, and the tunnel only heats the film surface to shrink it; the panels themselves stay at ambient temperature.

Q: Why vented film? A: Vent holes let air escape as the film collapses, so it shrinks flat around the stack without ballooning.

Q: Can the film be printed? A: Yes. Printed film carries brand and product data, and the flat tensioned surface after shrinking keeps the print readable.

Q: Can the same line pack other insulation boards? A: Yes. Sealing width, sealing height and feed speed adjust per product, and on the companion door shrink platform optical detection adapts the cycle to the product size automatically [manufacturer rating].

Next step

1. Send your panel and stack sizes, output and storage conditions to info@fhopepack.com.
2. We choose the packing method and lay out the line.
3. We reply within 24 hours with a proposal and quotation.

Related reading

• Automatic door shrinking machine (product)
• Fibre panel packing machine (video)
• Automatic panel sealing and shrinking machine (video)
• Door and panel shrink packaging machine (video)

Sources

• FHOPE product page: automatic door shrinking machine
• Door shrink wrap machine | Door shrinking machinery (product page)
• FHOPE project correspondence on foam and insulation panel packing
• EN ISO 12100:2010; EN 415-10; EN 60204-1

Last reviewed: 2026-10-20