Rolling Shutter Roll Forming: 5 Commercial Profiles for 2026

Darren Mao
نوفمبر 5, 2026

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Rolling Shutter Roll Forming: Shopfront to Warehouse Applications

الإجابة المختصرة: Rolling shutter roll forming produces five slat families from 0.5 to 1.0 mm prepainted or galvanized coil, at 25 to 40 m/min. The hook radius holds the curtain together, and it must repeat within 0.1 mm. Everything else in the specification follows from that one dimension.

A shutter that runs smoothly on the bench can still jam on the third week. The curtain has stretched, the hooks have opened, and the drum spring is now fighting a door that weighs more than it did on day one. Most of that traces back to slat geometry and coil gauge, not to the spring.

This guide covers what rolling shutter roll forming produces, where the tolerance budget sits, and which profiles need a different line rather than a different roll.

What Rolling Shutter Roll Forming Covers

Rolling shutter roll forming covers five slat families and two supporting profiles. Shopfront security takes solid and perforated slat. Warehouses take the same slat in heavier gauge, plus grille where ventilation matters. Cold rooms and climate-controlled spaces take the insulated slat.

المقطع	Gauge	Slat width	سرعة الخط	الحوامل
Solid slat	0.5 إلى 1.0 mm	من 60 إلى 90 مم	25 إلى 40 م/دقيقة	14 إلى 20
Perforated slat	0.5 إلى 0.8 مم	من 60 إلى 80 ملم	20 إلى 35 م/دقيقة	من 14 إلى 18
Insulated slat	0.5 إلى 0.8 مم	80 إلى 120 مم	من 12 إلى 20 م/دقيقة	من 16 إلى 22
Grille slat	0.6 to 1.0 mm	50 to 80 mm	20 إلى 30 م/دقيقة	من 12 إلى 16
Windlock slat	0.7 to 1.0 mm	من 60 إلى 90 مم	20 to 32 m/min	14 إلى 20
Bottom bar	0.8 إلى 1.5 mm	40 to 70 mm	25 إلى 40 م/دقيقة	10 to 14
Guide rail	0.8 to 2.0 mm	30 to 50 mm	20 إلى 35 م/دقيقة	10 to 16

In rolling shutter roll forming, the guide rail is the profile buyers forget. It carries the windlock, sets the curtain clearance, and takes the anchor load. A rail rolled at 1.0 mm for a 3 m wide door will bow between anchors, and the curtain then rubs on one side only.

The Hook Radius Is the Product

Every slat has a hook on one edge and a socket on the other. The curtain works because those two shapes match within a tolerance band, and the whole door inherits that tolerance.

Rolling shutter roll forming holds the hook radius within plus or minus 0.05 mm and the slat pitch within plus or minus 0.1 mm. Miss the pitch and the curtain grows or shrinks by 0.1 mm per slat, which on a 6 m high door with 70 slats is 7 mm of accumulated error at the drum.

الخاصية	التفاوت	ما الذي يتحكم فيه
Hook radius	plus or minus 0.05 mm	Curtain articulation and rattle
Slat pitch	plus or minus 0.1 mm	Curtain length at the drum
Slat width	plus or minus 0.10 mm	Coil fit inside the guide rail
Camber	1.0 mm per metre	Even winding on the drum
Cut length	زائد أو ناقص 1.0 مم	Curtain square at the floor

Camber is the second failure mode on any rolling shutter roll forming line. A slat that curves sideways winds onto the drum in a spiral, and the curtain then drags on the guide on one side. Check the first 3 m of each coil against a straight edge before adjusting rolls, because a cambered coil cannot be rolled straight.

Perforated Slats: Punch Inline or Buy Pre-Perforated

Perforated slat exists for ventilation and visibility. Open area usually runs 20 to 35 percent, with hole patterns from 4 mm round to 6 mm slot, and the pattern repeats across the full slat width.

There are two ways to make it. A perforating press ahead of the mill punches flat coil at 150 to 250 strokes per minute, which keeps the hole edge clean and lets the mill run continuously. Or the plant buys pre-perforated coil and skips the press entirely.

The second option is cheaper to install and more expensive per tonne. Pre-perforated coil carries a 15 to 25 percent premium and a longer lead time, so plants running more than about 2,000 tonnes a year usually bring the press in house. Below that, buying coil wins on cash flow.

One constraint applies either way. Rolling shutter roll forming on perforated strip needs a strip guide that does not touch the face, because any contact marks the edge of every hole.

Insulated Slats Need a Foaming Line, Not a Bigger Mill

In rolling shutter roll forming, an insulated slat starts as two thin skins formed as a pair, with polyurethane foam injected between them and cured before the slat is cut. The roll former is the smaller half of the investment.

البند	القيمة	ملاحظة
Skin gauge	0.5 إلى 0.8 مم	Both skins formed in one pass set
Foam density	38 to 45 kg/m3	Below 35 the slat dents
Panel U value	0.9 to 1.4 W/m2K	Depends on slat depth
سرعة الخط	من 12 إلى 20 م/دقيقة	Set by the curing tunnel
Slat depth	80 إلى 120 مم	Deeper slat, better U value

The foaming line sets the speed, not the mill. A roll former rated at 35 m/min will run at 15 m/min behind a 12 m tunnel, and buying a faster mill changes nothing. Plan the two halves together.

ال PU foamed roller shutter door line covers the inline arrangement, and the bottom bar profile shows how the curtain is closed at the floor.

Wind Load, Windlocks, and Curtain Weight

A shutter is a sail. At 3 m wide and 3 m high, a 20 m/s wind applies roughly 700 Pa, which is 6.3 kN across the curtain. The windlock is what stops that load from pulling the curtain out of the guide.

Windlock slats carry a shaped end that engages a matching pocket in the rail. Rolling shutter roll forming produces the lock as part of the slat, one extra forming station and a wider coil, rather than as a separate part.

Wind class for industrial doors is defined by EN 12424 and the product standard EN 13241, both published through the British Standards Institution. A door sold into an exposed site needs class 3 or above, and that decision belongs in the slat order rather than in the installation manual.

Curtain weight follows from the slat, and in rolling shutter roll forming that number sets the drive. A solid steel slat at 0.8 mm weighs about 9 kg per square metre of curtain. Insulated slat at 100 mm depth runs 12 to 14 kg. That number sets the drum, the spring and the motor, so changing slat gauge late in a project reopens the whole drive design.

Fire Shutters and Certification

A fire shutter is a standard curtain with a tested assembly around it. Rolling shutter roll forming produces the same slat profile for both, and the difference sits in the fusible link, the guide clearance and the test evidence.

Fire door and shutter assemblies are covered by NFPA 80 in North America, listed through Underwriters Laboratories, and by EN 16034 in Europe. The listing names the slat depth, the steel gauge and the fixings, so a curtain rolled on a line outside that specification is not the tested product.

Most plants running both standard and fire rated shutters keep them on the same mill and separate them by coil, gauge and traceability. That works as long as the gauge is not allowed to drift, which is why rolling shutter roll forming for fire work usually carries a stricter incoming coil check.

ما يجب ذكره في الاستفسار

Five numbers decide a rolling shutter roll forming quotation:

Slat family and gauge range, since insulated work needs a foaming line
Slat width and hook drawing, because the hook sets the whole tolerance chain
Door sizes, which decide windlock and guide rail gauge
Annual tonnage, which decides whether perforation is inline or bought in
Wind class or fire rating the finished door must hold

A single slat line with a flying shear and a bottom bar station covers shopfront and light warehouse work and is where most plants start. Adding insulated slat means a second line and a foaming tunnel, and the steel door production overview shows how those stations sit together.

For the frame side of the same factory, see steel door frame roll forming. ال punching die guide covers perforation tooling setup, coil selection covers prepainted grade and coating, and كيف تعمل آلة تشكيل اللفائف explains the pass structure behind the hook.

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We size rolling shutter roll forming lines against your slat family and wind class.

الأسئلة المتكررة

Q: What gauge does rolling shutter roll forming run?

0.5 to 1.0 mm. Shopfront curtains usually run 0.5 to 0.7 mm, warehouse curtains 0.8 to 1.0 mm, and insulated slat skins 0.5 to 0.8 mm on each face.

Q: Why does a shutter curtain jam after a few weeks?

Two reasons. Slat pitch drift accumulates until the curtain is longer than the drum expects, or cambered coil winds in a spiral and rubs one guide. Both come from coil quality and roll setting rather than the spring.

Q: Can rolling shutter roll forming make perforated slat inline?

Yes, with a perforating press ahead of the mill running 150 to 250 strokes per minute. Below about 2,000 tonnes a year, buying pre-perforated coil is usually cheaper despite the 15 to 25 percent premium.

Q: Do insulated slats need a different rolling shutter roll forming line?

A different line, not just different rolls. Insulated slat is two skins formed as a pair with foam injected between them, and the curing tunnel sets the speed at 12 to 20 m/min.

Q: What is a windlock slat for?

It locks the curtain into the guide rail so wind pressure cannot pull it out. The lock is formed as part of the slat, one extra station, and it is required for EN 12424 class 3 and above.

Q: Can one rolling shutter roll forming line make fire rated curtain?

The slat profile is usually the same. What changes is the gauge control, the traceability and the tested assembly around it, so the line has to hold gauge tightly and record which coil went into which curtain.

آخر تحديث: 2026-11-05

سجل تغييرات المقال

2026-11-05: Initial publication, backfilled into the 2026-11-04 calendar slot.

محفزات المراجعة التالية

EN 13241 or EN 12424 revises wind class definitions; a buyer requests a slat above 1.2 mm; foam chemical prices shift insulated slat cost against solid slat.