The cellulose diacetate flake(CDA) industry chain mainly covers the complete chain from upstream raw materials to downstream applications. Below is a detailed analysis of the industrial chain structure:

ONE、 Upstream link: raw material supply

1. Source of raw materials

Cellulose raw materials: natural cellulose such as cotton short fibers and wood pulp (coniferous pulp, broad-leaved pulp).

2. Chemical raw materials

Acetic Anhydride: a key esterification agent used to convert cellulose into cellulose diacetate.

Acetic acid: reaction solvent and by-product recycling raw material.

Catalyst: sulfuric acid or other acidic catalytic systems.

TWO、 Midstream link: Manufacturing of cellulose diacetate

1. Main process flow

Cellulose → Acetation → Hydrolysis → Washing → Flapping → Drying → Packaging

(Obtaining cellulose acetate flakes with different degrees of acetic acid substitution by controlling the degree of acetylation)

2. Main product forms

Cellulose diacetate flakes

Cellulose Diacetate Powder

Cellulose Diacetate Solution

THREE、 Downstream link: Application field

1. Smoke filter rod

Cellulose acetate tow  is the main raw material for filters.

Approximately 80% of the global consumption of cellulose acetate.

2. Textile and fiber applications

Diacetate fiber silk can be spun into acetate fiber cloth, which is used for high-end clothing, lining, and home textiles.

Features: High glossiness, silky feel, moisture absorption and breathability.

3. Plastic and film materials

Used as a thermoplastic substrate, optical film, and coating material.

Applied to eyeglass lenses, LCD display films, packaging films, etc.

4. Other applications

Ink, coatings, adhesives, medical materials (dialysis membranes, drug carriers), etc.