Applications of Poly(butylene adipate-co-terephthalate) in Industrial Manufacturing

As a direct manufacturer, we supply poly(butylene adipate-co-terephthalate) for a range of industrial sectors focused on sustainable and high-performance polymer applications. Below, we detail specific downstream use cases supported by industry compliance, recommended incorporation levels, integration in production workflows, and the actual types of finished goods manufactured.

1. Compostable Film Packaging

Our material features heavily in the production of compostable flexible packaging films, meeting the needs of food service and retail packaging sectors aiming for circular economy targets. The polymer’s mechanical strength, barrier properties, and biodegradation performance are tailored through blending and film blowing technology to achieve required end-product standards for shelf life and compostability. Food contact applications demand strict migration controls and traceability through the supply chain, which we support through technical monitoring and certificate management.

Industry compliance standards

• EN 13432:2000 (Packaging - requirements for packaging recoverable through composting and biodegradation)
• ASTM D6400 (Standard specification for labeling of plastics designed to be aerobically composted)
• FDA 21 CFR 177.1520 (Indirect food additives: polymers)
• EU Commission Regulation (EU) No 10/2011 (Plastics intended to come into contact with food)

Typical usage ratio

• 70-95% base polymer with 5-30% plasticizer and performance additives; ratio adjusted based on tensile strength, tear resistance, and compost mode (industrial vs. home composting).

Downstream process integration

• Added at the extrusion or film blowing stage, typically after thorough compounding and pellet drying to prevent hydrolysis during extrusion.

Final product types

• Biodegradable cling wrap
• Compostable produce bags
• Trash liners for organic waste
• Food wrapping films

2. Molded Biodegradable Rigid Packaging

Rigid packaging applications exploit the polymer’s processability in injection molding and thin-wall thermoforming. Producers of disposable tableware and food service containers use our material as a key structural component, often blended with natural biopolymers or calcium carbonate to adjust rigidity and thermal stability. All raw materials meet stringent audit trails for biobased claims and end-of-life performance, subject to third-party validation wherever required.

Industry compliance standards

• ISO 17088 (Specifications for compostable plastics)
• DIN CERTCO certification for compostability
• BPI Compostable certification (US Biodegradable Products Institute)
• FDA 21 CFR 177.1655 (Polymers for use in contact with food)

Typical usage ratio

• 60-90% of the base resin, with remainder comprising impact modifiers, fillers, or functional colorants, tuned for wall thickness and impact resistance.

Downstream process integration

• Fed as dry, pre-compounded pellets directly into injection molding or thermoforming machines, usually following moisture analysis and pre-heating to inhibit degradation.

Final product types

• Disposable cutlery
• Takeaway food clamshells
• Compostable drinking cups
• Thermoformed catering trays

3. Agricultural Mulch Films

Producers of biodegradable mulch films choose our polymer for its controlled degradation rate, which eliminates post-harvest film removal and reduces soil pollution. The formulation demands precise adjustment of molecular weight and crystallinity to fit crop cycles and field conditions. Quality control includes field simulation aging and monitoring of degradation residues, ensuring that all components comply with legislation on soil health and agrochemical compatibility.

Industry compliance standards

• EN 17033:2018 (Biodegradable mulch films for use in agriculture and horticulture)
• OECD 207 (Earthworm acute toxicity test, soil safety)
• ISO 14855 (Determination of the ultimate aerobic biodegradability of plastic materials in controlled composting conditions)

Typical usage ratio

• 85-100% biodegradable copolyester, minor additives for UV stabilization and process care depending on field deployment cycle (typically between 3–12 months).

Downstream process integration

• Introduced in film blowing or casting lines with in-line width and thickness adjustment to specified agricultural standards; post-extrusion slitting and surface corona treatment as needed for performance.

Final product types

• Biodegradable mulch film rolls
• Compostable plant nursery pots (via sheet forming)
• Shrink mulch covers for horticulture

4. Compostable Coatings and Laminations

Our copolyester serves as a renewable barrier coating for paper and board packaging used in single-use or direct food contact applications. The material provides controlled oxygen and moisture vapor transmission properties for products such as disposable cups, sandwich wraps, and bakery liners. Lamination typically requires the polymer to be co-extruded or hot-melt applied to substrates, ensuring safe migration limits per food safety regulations.

Industry compliance standards

• FDA 21 CFR 176.170 (Paper and paperboard components for use in contact with aqueous and fatty foods)
• EN 13432:2000 (Compostability for coated paper products)
• EuPIA GMP (Good Manufacturing Practice for food packaging inks and coatings)

Typical usage ratio

• 10-35 g/m² coating weight, depending on target barrier performance and print adhesion; often 15-25%, with paper or cellulose base comprising the majority by weight.

Downstream process integration

• Applied via extrusion coating or hot-melt lamination after surface pre-treatment; integration with inline cutting, printing, and roll stock conversion for finished goods lines.

Final product types

• Compostable coffee cups
• Barrier bakery bags
• Takeaway wraps
• Laminated sustainable paperboard trays

5. Biodegradable Textile Fiber Production

Fiber and filament manufacturers blend our copolyester with biopolyesters or natural fibers to produce melt-spun biodegradable yarns. These yarns target limited lifespan, disposable applications, such as agricultural twines, nonwoven fabrics for wipes, and short-use technical textiles. Quality assurance includes molecular weight control and fiber tensile testing, validated against disposal and biodegradation targets required by downstream garment, hygiene, or agritech customers.

Industry compliance standards

• OEKO-TEX Standard 100 (Tested for harmful substances in textiles)
• EN 14995 (Plastics – Evaluation of compostability – Test scheme and specifications)
• GB/T 33796-2017 (Test method for biodegradability in soil for mulch film, relevant for agricultural fibers)

Typical usage ratio

• 50-85% copolyester blended with other biopolymers such as PLA or PBAT, or with cellulosics; ratio tuned for extrusion viscosity, spinneret performance, and target denier.

Downstream process integration

• Fed as pellets to fiber extrusion equipment; melt spinning follows, with post-extrusion stretching, drawing, and surface finishing as per yarn specification.

Final product types

• Biodegradable spunbond nonwovens
• Short-use compostable textiles
• Agricultural tying twines
• Hygienic wipes and covers