Goose Down And Duck Down
Goose down and duck down are down materials collected from goose or duck feathers that retain air to provide insulation.
Contents6 sections
Definition and Overview
Goose down is down derived from geese, and duck down is down derived from ducks. Down refers to plumage that has no quill shaft and has fine barbs radiating outward from the center; it is lofty and functions as insulation by creating an air layer.
Interlining is a trim material that supports the shape of a garment, but goose down and duck down are materials mainly used as quilt batting and insulation. Therefore, their purpose and usage differ from interlinings such as fusible interlining and haircloth interlining.
Areas Used and Role
It is enclosed between the outer fabric and lining and used in down jackets, coats, vests, and similar items. It is used in the body, sleeves, collar, hood, and other parts to retain air inside the garment and achieve both lightness and warmth.
To keep the down from shifting, it is common to place it in a quilted, baffle-type bag structure. The fill amount for each area, the size of the compartments, and the pattern design affect not only warmth but also the appearance when worn and ease of movement.
Materials and Types
Down products may contain feathers with quills mixed in. Down provides loft, while feathers support the bulk. The mixing ratio is shown as the down percentage, which is one factor used to judge the properties of the insulation material.
The quality cannot be judged uniformly based only on whether it is goose or duck. It is important to check the size of the plumage, maturity, washing condition, down percentage, loft, fill amount, and compartment design of the product together.
- Down: Plumage without quills that spreads three-dimensionally.
- Feather: Plumage with a quill, sometimes mixed with down.
- Fill power: An index that indicates the loft of a fixed amount of down.
- Down percentage: An indication of the proportion of down in the filling.
Compatibility with Outer Fabric and How to Choose
For the outer fabric and lining, choose tightly woven fabric that makes it harder for feathers to escape through seams or gaps in the fabric. Lightweight nylon and high-density polyester woven fabrics are often used, but depending on the application, also check the hand, durability, and water repellency.
With thin outer fabrics, the outline of the feathers and the quilting lines are more likely to stand out, and with dark or glossy outer fabrics, down show-through, bleed-through marks, and feather escape from seams may affect the appearance. Before full-scale production, make a sample using the actual outer fabric, lining, and fill amount.
Thickness and firmness are determined from the desired silhouette and application. In general, increasing the fill amount increases warmth and bulk, but the garment becomes thicker and may feel stiffer, and the wearing comfort at movable areas may change, so adjust it by area.
Sewing and Handling Precautions
During cutting and sewing, feathers tend to adhere to the work area, so manage the work sequence, including the filling process, and cleaning methods. Holes made by sewing needles and the seams can become pathways for down to escape, so check the needles, thread, stitch count, and sewing specifications in combination with the outer fabric.
If the quilting compartments are too large, the filling tends to shift; if they are too small, the number of seams increases, which can affect warmth and appearance. After filling, inspect for uneven fill, shifting, feather escape from seams, and flattening caused by pressing.
Frequently Asked Questions
Which should I choose, goose down or duck down?
Do not decide superiority based only on the bird species name; choose comprehensively based on the required warmth, product weight, thickness, fill amount, down percentage, loft, and compatibility with the outer fabric. Even within the same bird species, properties vary depending on the state of the raw material, processing, and mixing ratio, so verification by sampling is necessary.
Can down be used instead of fusible interlining?
No. Down is quilt batting that retains air to provide warmth, and its role differs from fusible interlining, which maintains the shape of a garment. Even in down products, separately suitable interlinings are used in areas that need shaping, such as the front placket, facing, and collar.
What should be checked to reduce down escape?
Check the density of the outer fabric and lining, the seam specifications, the combination of needle and thread, and the condition of the filling. Perform sewing tests with the actual materials, and determine the specifications by evaluating how feathers come out from the seams, quilting sections, and areas subject to friction.
