Lesson 2. Material base

Fabrics, trims, and fusibles are the foundation of any style.

  1. Main fabric groups and their properties.
  2. How fabric affects fit and the style.
  3. Trims and finishing: how they complicate the process and increase cost.
  4. Fusible materials: why we fuse, and what happens if we don’t.

1. Fabric types: range, properties, purpose

1.1. Why a designer should understand fabrics

Fabric is the main material of a garment. Its composition, structure, and properties affect:

  • the look and the “class” of the item,
  • fit on the body,
  • wearing comfort,
  • durability,
  • processing complexity and cost.

The same style in different fabrics is essentially a different product.
That’s why fabric choice shouldn’t be left “for later.”

1.2. Classification by fiber origin

Roughly, fabrics are divided into:

  • Natural
    – plant-based: cotton, linen,
    – animal-based: wool, silk.

  • Chemical
    – regenerated: viscose, acetate,
    – synthetic: polyester, nylon, acrylic, elastane.

In reality, most modern fabrics are blends
(e.g., viscose + polyester + elastane).

1.3. Weave and fabric character

Main weave types:

  • plain weave — simple and dense (batiste, calico, staple),
  • twill weave — diagonal rib, more pliable (denim, gabardine, tweed),
  • satin weave — smooth, glossy surface (satin, sateen),
  • combined and complex (jacquard, etc.).

Weave affects:

  • density,
  • drape,
  • crease resistance,
  • wear resistance.

1.4. Main fabric groups by purpose

  • Dress fabrics
    Staple, batiste, crepe, poplin, satin, etc.
    Used for dresses, sundresses, blouses, tunics.
  • Suiting fabrics
    Gabardine, tweed, fine wool, viscose with elastane.
    For suits, jackets, skirts, trousers.
  • Coating fabrics
    Drap, bouclé, tweed, cashmere, etc.
    For coats, short coats, warm jackets.
  • Blouse and shirting fabrics
    Fine cotton, chiffon, batiste, viscose.
    For shirts and blouses.
  • Lining fabrics
    Viscose, acetate, polyester.
    For garment interiors.
  • Insulating and lining-insulating materials
    Sintepon, fleece, Alpolux, etc.
    For jackets and coats.
  • Knitted fabrics
    Single jersey, fleece (sweatshirt), jersey, rib knit, etc.
    For T-shirts, sweatshirts, knit dresses, sportswear.

1.5. Fabric properties and their impact on construction

Key properties:

  • Density and thickness
    The denser and thicker the fabric, the simpler the construction should be
    (thick fabrics don’t like tiny details).
  • Elasticity
    Stretch fabrics allow smaller ease and more fitted silhouettes.
  • Drape
    Soft fabrics are suitable for pleats, drapes, and soft silhouettes.
    Stiff fabrics are for geometric shapes and crisp lines.
  • Shrinkage
    Natural and blended fabrics almost always shrink.
    Before cutting, pre-shrinking/pressing (VTO) or a shrink test is needed.
  • Creasing and wear resistance
    They affect appearance in wear and product positioning.

Construction link:

  • stiff dense fabric + complex fitted silhouette = risk of wrinkles
  • fine chiffon + complex structured shape = the shape will “collapse”
  • knit + a shape designed for non-stretch fabric = the garment will stretch and “slide”

1.6. Common beginner mistakes when choosing fabric

  • Choosing fabric “because it’s pretty,” not because it suits the style.
  • Ignoring shrinkage — after washing the garment shrinks in length and width.
  • Not testing how the fabric behaves in seams and under the iron.
  • Choosing a thin fabric for styles with many seams and panels.
    Trying complex constructions on cheap, unstable fabrics.

A question for the designer

Before approving a fabric, ask yourself:

– “What will it be like after ten washes?”
– “Can someone sit, move, and work in it?”
– “Will it become heavy, stiff, or too wrinkly in real life?”

A beautiful fabric on the roll doesn’t always mean a good clothing fabric

2. Trims and finishing: impact on cost and technology

2.1. What trims and finishing are

Trims are all additional elements that contribute to the garment’s function:

  • closures (zippers, buttons, snaps, hooks, Velcro),
  • adjustment elements (buckles, cords, stoppers, elastics),
  • sewing materials (threads, bias tape, braid/tape, ribbons),
  • interlining materials (fusibles, though we cover them in a separate section).

Finishing refers to elements that add decoration:

  • decorative stitching,
  • tapes, lace, piping,
  • appliqués, embroidery, decorative hardware.

2.2. Impact on technology

Each type of trim/finishing:

  • requires a specific processing method,
  • adds operations (therefore time and cost),
  • sometimes changes the assembly sequence.

Examples:

  • zipper → requires reinforced handling and precise alignment,
  • buttons → require buttonholes, reinforced areas, accurate marking,
  • piping and bias tape → are inserted into seams, complicating cutting and assembly,
  • embroidery and appliqué → are done before assembly and require fabric stabilization.

2.3. Impact on cost

Trims affect garment price through:

  • their own cost,
  • number of operations,
  • need for hand work,
  • dependence on suppliers (lead times, minimums, logistics).

Simple topstitching barely increases cost.
Lace, complex finishing, hand embroidery, metal elements
can add dozens of percent to cost.

2.4. Beginner designer mistakes

  • Choosing trims “from a picture” without considering fabric thickness and character.
  • Putting heavy trims on light fabric — the garment pulls and distorts.
  • Not specifying trims in the tech pack — the workshop “uses what they have.”
  • Not thinking ahead about how each element will be attached.
  • Ignoring color, quality, and durability (cheap zippers break, buttons crumble).

From practice

A dress in thin viscose with a heavy metal zipper and large decorative snaps.

Result:

– the fabric pulls downward,
– the neckline distorts,
– after one season the garment looks tired.

Trims should be not only “pretty,” but also proportional to the fabric and the purpose.

2.5. Practical recommendations

  • Specify trims in the tech pack: type, quantity, approximate size, color.
  • Keep trim samples in the collection folder.
  • Include processing time and complexity when calculating cost.
  • Maintain a consistent trim style within a single collection.

3. Fusible interlinings: range and properties

3.1. Purpose of fusibles

Fusible (interlining) materials are used to:

  • reinforce parts (front edges/facings, collars, belts, cuffs, plackets),
  • stabilize edges prone to stretching (armholes, neckline, closures),
  • help the garment keep its shape in wear,
  • improve appearance (smooth edges, crisp lines).

They are not “extra cost,” but a necessity if we want stable shape.

3.2. Main fusible types by base

  • Woven fusibles
    Have warp and weft, stable in shape.
    Used for front edges/facings, collars, belts.

  • Non-woven (fusible interfacing)
    Lightweight, no strong grain direction.
    For facings, plackets, small parts.

  • Knitted fusibles (knit fusible)
    Stretchy.
    For knits and stretch fabrics to preserve stretch.

3.3. Adhesive coating

  • dot coating — keeps fabric soft, suitable for thin and drapey materials,

  • powder coating — a universal option,

  • full coating — adds stiffness, for dense, shape-holding parts.

3.4. Choosing fusible

When choosing fusible, consider:

  • fabric density and thickness,
  • elasticity (don’t use stiff fusible on stretch fabric),
  • color (so it doesn’t show through),
  • pressing conditions (fabric must not scorch or shine at the required temperature).

Mandatory rule: always do a test fuse

on a fabric swatch — check fit/hand, appearance, and stability after washing.

3.5. Mistakes when working with fusibles

  • Choosing too stiff an interfacing — causes wrinkles and an “armor” feel instead of a nice shape.
  • Wrong temperature/time — adhesive either doesn’t bond or gets overheated.
  • Fusing damp fabric — the bond weakens after washing.
  • Skipping the test fuse “to save time.”

From production

Saving on fusible often shows up on collars and front edges:

– at first everything looks smooth,
– after a few washes the edges start to ripple,
– the garment looks cheap even if the fabric is expensive.

Good fusible is not a luxury, but an essential part of a neat garment.

3.6. Impact on cost

Fusibles increase garment cost by a small percentage, but:

  • reduce defects,
  • speed up work (vs sew-in interlinings),
  • improve quality and appearance.

For a brand that wants stable shape and a good look,
fusibles are not an option — they are the standard.

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