Industrial cellulose acetate flakes (usually referring to cellulose diacetate flakes, abbreviated as CDA) can be mainly divided into the following categories based on their ultimate use and performance requirements: 

1. Use cellulose acetate flakes for filter tips

Used for making cigarette filter tips (bundles).

Main features: good adsorption performance, certain hardness, and formability.

Application: The main material of cigarette filter rods accounts for a large proportion of the consumption of cellulose acetate flakes.

Requirement: It must comply with food grade safety standards, have suitable pore structure and adsorption efficiency.

2. Two cellulose acetate flakes for textile use

Used for producing cellulose acetate fibers (acetate fibers).

Main features: It has good spinning performance, glossiness, dyeability, and hand feel.

Application: Making high-end clothing linings, ribbons, ties, women's clothing, etc.

Requirement: The degree of polymerization and esterification should be suitable for the spinning process, with low impurity content.

3. Plastic cellulose acetate flakes

Used for producing cellulose acetate plastics (such as injection grade and extrusion grade materials).

Main features: good transparency, toughness, processability, and weather resistance.

Application:

Glasses frame: lightweight, easy to process, good gloss.

Tool handle: insulated and impact resistant.

Automotive parts, pen holders, cosmetic packaging, etc.

Requirement: Liquidity and thermal stability must comply with injection molding or extrusion processes.

4. Film with cellulose acetate flakes

Used for producing cellulose acetate film.

Main features: high transparency, low haze, good mechanical strength, and barrier properties.

Application:

Packaging materials: food and drug packaging.

Industrial film: film substrate (historically used for photographic film), polarizing film protective film for LCD displays, etc.

Requirements: High optical performance, surface flatness, and cleanliness.

5. Two cellulose acetate flakes for coatings and adhesives

As a film-forming substance or modifier.

Application:

Paint: Used for coating surfaces such as wood and metal, providing gloss and protection.

Adhesive: Used for bonding specific materials.

Requirement: Good solubility and compatibility with other resins.

6. Other special purposes

Dialysis membrane material: used in the medical field for hemodialysis.

Separation membrane: used for gas separation, pervaporation, etc.

Ceramic molding adhesive: provides temporary strength before high-temperature sintering.

summary

The classification of industrial cellulose acetate flakes is mainly based on their downstream processing requirements and end product performance. There are clear requirements for the specifications of cellulose acetate flakes (such as molecular weight, acetyl value, additives, etc.) for different purposes, and the production process will be customized by adjusting process parameters such as hydrolysis degree and substitution degree. Textiles, filters, and plastics are the most widely consumed application areas.