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Vlieseline Decovil roll
03 · Vlieseline® · Leather-like, heavyweight

Decovil

Decovil I

Heavyweight, dimensionally stable and resilient fusible interlining with a leather-like feel. Also tear-resistant, easy to shape, non-creasing and punchable. Cut edges remain firm.

Price for Decovil
Strong, sculptural structure with a leather-like feel.
Often called “Decovil Heavy”
What it does

Decovil® I is the heavyweight version of the Decovil range.

At 400 g/m² it gives suitable fabrics strong, resilient, shape-holding support while remaining a sewable textile stabilizer.

It has a distinctive leather-like feel, resists tearing and permanent creasing, doesn't fray, keeps firm cut edges, and can be shaped and punched. It creates substantially more firmness than fusible fleece or Decovil® I Light.

Choose it when

You need a base, flap, panel or accessory component to feel genuinely firm and hold a strong, professional silhouette.

What the customer is asking for

I need the base, flap or panel to feel very firm and hold a strong shape.

Spec sheet
Weight
400 g/m²
Composition
45% Cellulose, 30% PES, 25% PA
Roll width
35 in / 90 cm
Roll length
16 yd / 15 m
Colours
Beige
Fusing
Hand iron with damp cloth
Iron time
6 s
Care
Gentle wash 30°C · no bleach · no tumble dry · not dry-cleanable
OEKO-TEX®
Class II
Download Decovil datasheet (PDF)Official Freudenberg technical data

Use it for

For handicrafts and creative work such as bags, hats or belts, as well as for interior design and home decoration. Suitable for cotton, furnishing and synthetic fabrics.

Advantages
Dimensionally stable
High resilience
Resistant to bending
Extremely resistant to tearing
Non-fraying
Easy to sew in

How to fuse it

Hand iron with damp cloth · 6 s · test a scrap first
1Lay the interlining with the coated side facing the reverse side of the fabric.
2Cover with a damp cloth and iron for around 6 seconds, section by section.
3Do not push the iron. After fixing, lay the pieces flat to cool for around 30 minutes to let the bond stabilise.

Best for

Firm bag bottoms and bases
Structured flaps
Boxy handbags and cases
Clutches and structured purses
Firm side panels and gussets
Wallet exteriors
Briefcase-style and satchel components
Hats and firm brims
Belts and firm straps
Fabric boxes, bowls and organizers
Sculptural textile, interior-design and home-decor components

Works best with

Cotton
Canvas
Furnishing and upholstery-weight fabrics
Decorative fabrics
Suitable synthetics

Heat-sensitive, coated and synthetic materials must be tested first. Don't assume every vinyl, faux leather or coated fabric can tolerate the heat and moisture.

Choose something else if…

You want the finished bag to stay soft or slouchy
You need flexible, easier-to-turn support across a whole bag body — choose Decovil® I Light
You need padding or a cushioned quilted effect — choose H630 or H640
You're interfacing a drapey garment, jersey or another stretch knit
The fabric is extremely fine, sheer or heat-sensitive
The finished item must be dry-cleaned
The design needs a completely rigid, board-like base
Maker tip

Decovil® I is usually used selectively, not everywhere. Many patterns remove heavyweight stabilizer from seam allowances to control bulk — follow the pattern, and check your machine, needle and foot can manage the full layer stack before final assembly.

In one sentence

Choose Decovil® I for heavyweight, leather-like support in bases, flaps and firm sculptural components.

Pairs well with
H640 batting — a rigid base under a lofted outer is the standard bag build.
Also in stock
H630H640Decovil LightH609G785