Compostable Sheets

Compostable Plastic Sheets and Films for Sustainable Packaging

HSQY PLASTIC supplies compostable plastic sheets and films for thermoforming, food packaging, clamshells, trays, containers, flexible packaging and other applications where biodegradable or compostable material performance is required.

The current HSQY compostable material portfolio includes PLA thermoforming sheet, PLA/PBAT flexible film and PBS sheet. These materials have different transparency, flexibility, heat performance, thickness ranges, processing behavior and end-of-life characteristics, so they should not be treated as interchangeable products.

For packaging buyers, the most important questions are not simply whether a material is described as "eco-friendly" or "biodegradable." The specification should define the material type, sheet or film thickness, thermoforming process, food-contact requirement, operating temperature, composting environment and required certification.

Compostability claims should always be confirmed for the exact material formulation and finished product. Industrial compostability does not automatically mean home compostability, and biodegradable does not automatically mean that a material will rapidly break down in soil, landfill, marine environments or normal outdoor conditions.

What Are Compostable Plastic Sheets?

Compostable plastic sheets are thermoplastic sheet or film materials designed so that a suitable formulation and finished product can biodegrade under specified composting conditions.

Depending on the material and formulation, compostable sheet can be extruded into rigid rollstock for thermoforming or into thinner flexible films for packaging and converting.

HSQY's current product family uses three main material systems: PLA, PLA/PBAT blends and PBS. Each should be selected according to the required balance of rigidity, flexibility, clarity, temperature resistance, processing behavior and compostability requirements.

HSQY Compostable Sheet and Film Product Range

Material	Current HSQY Range	Main Selection Direction
PLA Sheet	Approximately 0.15–3 mm; width up to approximately 1300 mm	Clear rigid thermoforming, trays, clamshells, cups, lids and cold-food packaging
PLA/PBAT Film	Approximately 0.02–0.2 mm; width up to approximately 1000 mm	Flexible packaging and converted film applications requiring greater flexibility than pure PLA
PBS Sheet	Approximately 0.15–3 mm; width up to approximately 1300 mm	Thermoformed packaging requiring flexibility, toughness and moderate heat resistance

Thickness, width, color, formulation, sheet or roll format and processing conditions should be confirmed for the exact product before commercial ordering.

PLA Compostable Thermoforming Sheet

PLA sheet is made from polylactic acid, a thermoplastic polymer commonly produced from renewable feedstocks such as plant-derived sugars.

PLA is particularly useful for clear rigid packaging because suitable grades can combine transparency, rigidity and thermoforming capability.

HSQY's current PLA sheet product covers approximately 0.15–3 mm thickness and widths up to approximately 1300 mm. Clear material is currently featured for food-packaging and thermoforming applications.

Typical applications include fresh-food trays, produce packaging, clamshells, bakery containers, cold-drink cups, lids and other clear thermoformed packaging.

Standard PLA has limited heat resistance compared with high-temperature packaging materials, so microwave, oven, hot-fill or other elevated-temperature applications should only be approved after the exact PLA grade and finished package have been validated.

View the current                    PLA Thermoforming Sheet                for product-specific details.

PLA/PBAT Compostable Flexible Film

PLA/PBAT film combines PLA with PBAT to create a more flexible material system than rigid PLA alone.

PLA contributes rigidity and renewable-content potential, while PBAT contributes flexibility, toughness and elongation. The exact performance depends on blend ratio, additives, film thickness and processing conditions.

HSQY's current PLA/PBAT product is a thin flexible film with approximately 0.02–0.2 mm thickness and maximum width of approximately 1000 mm.

Flexible packaging, converted film and selected thin formed products are more natural application directions for this material than applications requiring the rigidity of a thick PLA or PBS thermoforming sheet.

View the current                    PLA/PBAT Packaging Film                for product-specific details.

Biodegradable PBS Plastic Sheet

PBS sheet is made from polybutylene succinate, a biodegradable polyester that can provide a useful combination of flexibility, toughness, thermoforming capability and moderate temperature resistance.

HSQY's current PBS sheet covers approximately 0.15–3 mm thickness, widths up to approximately 1300 mm and a reference density of approximately 1.35 g/cm³.

PBS can be evaluated for thermoformed food trays, clamshells, takeaway containers, fresh-produce packaging and other applications where a more flexible sheet is preferred.

PBS should not automatically be described as 100% bio-based. The renewable content depends on the feedstock and production route used for the exact polymer grade.

View the current                    Biodegradable PBS Plastic Sheet                for product-specific details.

PLA vs. PLA/PBAT vs. PBS: Which Material Should You Choose?

Selection Factor	PLA	PLA/PBAT	PBS
Typical Form	Rigid sheet / rollstock	Flexible film	Flexible-to-rigid thermoforming sheet depending on grade and gauge
Clarity	Strong option for clear packaging	Depends on blend and formulation	Grade-dependent; normally selected more for mechanical behavior than premium transparency
Rigidity	Relatively rigid	More flexible	More flexible and tough than rigid PLA in suitable formulations
Main Processing	Sheet extrusion and thermoforming	Film extrusion, converting and application-specific forming	Sheet extrusion and thermoforming
Heat Selection	Standard grades primarily for cold or room-temperature applications	Depends strongly on blend formulation	Can provide useful moderate-temperature performance depending on grade
Bio-Based Content	PLA is commonly produced from renewable feedstocks	Partially dependent on PLA content and PBAT/feedstock formulation	Depends on the PBS feedstock and production route
Typical Best Fit	Clear rigid food packaging	Flexible compostable packaging	Tough thermoformed packaging and selected moderate-heat applications

Biodegradable vs. Compostable: What Is the Difference?

Biodegradable is a broad term describing the ability of a material to be broken down biologically under suitable environmental conditions.

Compostable is more specific. A compostability claim should define the composting environment and, where required, demonstrate compliance with an applicable standard or certification scheme.

Therefore, a material described as biodegradable should not automatically be marketed as certified compostable unless the exact formulation and product have the required supporting documentation.

Bio-Based vs. Biodegradable Plastic

Bio-based describes where the carbon feedstock comes from. Biodegradable describes how a material can break down under specified biological conditions.

A material can be bio-based without being biodegradable, and a biodegradable polymer can contain fossil-derived feedstock.

PLA is commonly produced from renewable plant-derived feedstocks. PLA/PBAT blends should not be described as 100% plant-based unless the actual formulation supports that claim, and PBS renewable content also depends on the selected resin route.

Industrial Compostable vs. Home Compostable

Composting Claim	Meaning
Industrial / Commercial Compostable	Designed for controlled commercial composting conditions and should be supported by an applicable standard or certification for the exact product.
Home Compostable	Requires performance under lower-temperature home-composting conditions and should not be assumed from an industrial-compostability claim.
Biodegradable	Broad biological-degradation description that does not by itself define a standardized composting environment.

Buyers should state whether the target market requires industrial compostability, commercial and home compostability, or another end-of-life claim before selecting the material.

EN 13432, ASTM D6400 and Compostability Certification

Packaging sold with compostability claims may need to meet different standards depending on destination market and final product construction.

Standard / Scheme	General Relevance
EN 13432	European standard commonly used for packaging intended for recovery through industrial composting and biodegradation
ASTM D6400	Major North American specification used for plastics designed for composting in municipal or industrial aerobic composting facilities
BPI Certification	Third-party certification system in North America using applicable ASTM compostability requirements and additional certification criteria
Home Compostability	Requires separate home-composting assessment; industrial-compostability documentation alone should not be used as proof

HSQY buyers should request documentation for the exact material, formulation, thickness and intended finished product. A certificate for one resin, sheet thickness or product construction should not automatically be applied to a different product.

Why Finished Product Thickness Matters for Compostability

Compostability is not determined only by the polymer name.

Sheet thickness, finished wall thickness, part geometry, labels, coatings, inks, adhesives and other package components can influence the ability of the finished item to meet a compostability standard.

For this reason, a thermoformer converting certified raw material into a much thicker or different finished product may need to confirm that the final item remains within the applicable certification scope.

Compostable Sheet for Thermoforming

PLA and PBS sheets can be used as thermoforming rollstock for suitable packaging applications.

Thermoforming performance depends on material grade, sheet thickness, moisture condition, heater profile, mold design, forming depth, cooling, trimming and final wall-thickness distribution.

PLA has a narrower processing window than many conventional packaging plastics, so stable temperature control and material handling are particularly important.

Buyers should provide thermoforming machine width, required roll width, thickness, forming depth, mold dimensions, expected line speed and finished package geometry when requesting material recommendations.

PLA Sheet for Clear Food Packaging

Clear PLA sheet is particularly relevant to chilled and ambient food packaging where product visibility is important.

Potential finished products include produce trays, salad containers, bakery packaging, clear clamshells, cups and lids.

For retail packaging, buyers should define transparency, haze, wall thickness, impact requirement, stacking, sealing method, refrigeration conditions and required food-contact documentation.

Compostable Sheet for Trays and Clamshell Containers

PLA and PBS can be evaluated for thermoformed trays, clamshell packaging and other rigid packaging formats.

PLA is generally selected where clear rigid presentation is important, while PBS may be worth evaluating where additional flexibility or toughness is required.

The final material choice should also consider forming depth, flange rigidity, closure design, lidding-film compatibility, storage temperature and compostability requirements.

Compostable Flexible Packaging Film

Thin PLA/PBAT film provides a different packaging function from rigid PLA or PBS sheet.

Its greater flexibility makes it more relevant to flexible packaging, wrapping, converting and other film-based applications where a rigid thermoforming sheet is unnecessary.

Flexible-packaging buyers should specify thickness, roll width, tensile and elongation requirements, sealing method, printing or lamination process, barrier requirement and end-of-life certification.

Food-Contact Compliance Is Separate from Compostability

A material can meet compostability requirements without automatically meeting every food-contact requirement, and food-contact compliance does not automatically prove compostability.

Food-packaging buyers should confirm the exact material formulation, additives, colorants, intended food type, contact time, temperature and destination-market regulation.

If FDA, EU or another food-contact declaration is required, provide the destination market and intended use so documentation for the applicable HSQY product can be confirmed.

Heat Resistance of PLA, PLA/PBAT and PBS

"Compostable" does not describe the heat resistance of a material.

Material	Heat-Use Guidance
Standard PLA	Primarily suitable for cold or ambient packaging unless a specific heat-resistant grade and finished product have been validated
PLA/PBAT	Performance depends strongly on blend composition, film thickness and application; confirm the exact grade
PBS	Can provide better moderate-temperature performance than standard PLA in suitable grades, but application limits must still be validated

Microwave, hot-fill, boiling-water, oven or other high-temperature applications should never be approved solely because the material is described as biodegradable or compostable.

Can PLA Packaging Be Used in a Microwave or Oven?

Standard clear PLA food-packaging sheet should generally be treated as a cold or room-temperature packaging material unless an application-specific heat-resistant PLA grade has been qualified.

Do not automatically describe standard PLA trays, cups or clamshells as microwave-safe or oven-safe.

If hot-food or reheating performance is required, provide the temperature, heating method, duration, food type and finished package design before material selection.

Cold and Refrigerated Food Packaging

PLA is particularly relevant to cold-food packaging applications such as salads, fresh produce, refrigerated bakery items and chilled ready-to-eat products.

Low-temperature impact, brittleness, stacking performance and condensation conditions should be tested using the actual finished packaging.

Lidding Film and Sealing Compatibility

A compostable thermoformed tray may require a compatible lidding material when the package is designed to be sealed.

Seal performance depends on tray material, lidding structure, sealant chemistry, sealing temperature, pressure, dwell time and flange design.

If the complete package is marketed as compostable, the tray, lidding film, coatings, adhesives, inks, labels and other relevant components should be evaluated together under the applicable certification requirements.

Compostable Sheet vs. PET and PP Sheet

Selection Factor	Compostable Materials	PET / PP
End-of-Life Strategy	Designed for a defined biodegradation or composting pathway when properly certified and collected	Conventional plastic recycling or other established waste-management routes depending on material and local infrastructure
Clear Rigid Packaging	PLA is a primary compostable option for suitable applications	PET has a mature clear-packaging supply chain
High-Temperature Packaging	Highly grade-specific; standard PLA has important temperature limitations	PP or specialty PET structures can offer different high-temperature options depending on application
Infrastructure	Requires access to the intended composting collection and processing route for the environmental benefit to be realized	Recycling infrastructure varies by material and location
Best Selection	Where compostability is a defined project and waste-management requirement	Where recycling, cost, heat performance or established conventional packaging infrastructure is the priority

Does Compostable Plastic Break Down in Landfill?

A compostable-material claim should not be interpreted as a guarantee of rapid degradation in landfill.

Industrial composting relies on controlled biological conditions. Landfill, roadside, soil, freshwater and marine environments have different temperature, oxygen, moisture and microbial conditions.

Compostable packaging should therefore be designed together with an appropriate collection and end-of-life pathway rather than used to justify uncontrolled littering or disposal.

Is Compostable Plastic Recyclable?

Compostability and recyclability are different end-of-life strategies.

Some biopolymer materials can technically be recycled under dedicated conditions, but actual collection, sorting and recycling acceptance varies by location.

Buyers should select and communicate the intended disposal route according to local infrastructure rather than marking a package as both recyclable and compostable without supporting evidence.

Processing and Storage of PLA and Compostable Sheets

Compostable polymers require controlled material handling just like conventional thermoplastics.

PLA processing can be sensitive to moisture and temperature history. Drying, extrusion and thermoforming conditions should follow the technical requirements of the exact resin or sheet grade.

Sheets and films should be stored in clean, dry conditions away from unnecessary heat and direct sunlight, with original protective packaging retained where practical until processing.

How to Choose a Compostable Plastic Sheet or Film

1. Define the Finished Packaging Application

Specify tray, clamshell, cup, lid, flexible film, produce packaging, takeaway container or another finished product.

2. Choose PLA, PLA/PBAT or PBS

Use PLA as the first material to evaluate for clear rigid thermoformed packaging, PLA/PBAT for flexible film applications, and PBS when toughness or moderate-temperature performance is an important part of the project.

3. Define Sheet or Film Thickness

Specify the incoming gauge and tolerance together with the required finished wall thickness after forming.

4. Define Roll or Sheet Width

Match material width to the thermoforming or converting line and product nesting layout to improve production efficiency.

5. Define Rigidity and Flexibility

Clarify whether the final package requires a rigid clear tray, flexible film, tough clamshell or another mechanical profile.

6. Define Transparency

For retail clear packaging, specify clarity, haze, color and approved-sample requirements where appearance is critical.

7. Define Operating Temperature

State refrigerated, frozen, ambient, hot-fill, microwave or other temperature conditions before selecting a compostable material.

8. Define Thermoforming Conditions

Provide machine type, mold dimensions, draw depth, line speed and required finished wall thickness.

9. Define Sealing Requirements

If the finished container will be heat sealed, provide the proposed lidding material and target peel or lock-seal performance.

10. Confirm Food-Contact Requirements

Identify the destination market, food type, contact temperature and documentation required for direct food contact.

11. Define the Composting Claim

State whether the target is industrial compostability, home compostability or another verified end-of-life requirement.

12. Confirm the Required Standard

Identify EN 13432, ASTM D6400, BPI or another applicable certification requirement before final product approval.

13. Evaluate the Complete Package

Consider trays, lids, films, labels, inks, adhesives and coatings when the whole package will carry a compostability claim.

14. Test the Finished Product

Validate forming, rigidity, impact, sealing, temperature performance, storage and required compliance using the actual finished package before bulk commercialization.

Custom Compostable Sheet and Film Supply

HSQY supports compostable sheet and film projects for food-packaging manufacturers, thermoformers, flexible-packaging converters, foodservice companies, distributors and other packaging buyers.

Project-specific requirements can include:

• PLA thermoforming sheet

• PLA/PBAT flexible film

• PBS thermoforming sheet

• Custom thickness

• Custom roll width

• Custom sheet dimensions

• Rollstock for thermoforming

• Cut-sheet formats

• Clear packaging material

• Custom color requirements where supported

• Thermoforming requirements

• Vacuum-forming requirements

• Flexible-film converting requirements

• Printing requirements

• Lamination requirements

• Heat-sealing requirements

• Food-contact documentation

• Compostability documentation according to the agreed product specification

• Packing according to the agreed specification

Quality Control for Compostable Sheets and Films

Important inspection and purchasing parameters can include:

• Material formulation

• Sheet or film thickness

• Thickness tolerance

• Roll or sheet width

• Roll winding and core requirements

• Surface appearance

• Transparency and haze where specified

• Color consistency where specified

• Mechanical properties where specified

• Thermoforming behavior

• Finished wall-thickness distribution

• Sealing performance where required

• Printing or lamination performance where required

• Temperature performance where specified

• Food-contact documentation where required

• Compostability documentation where required

• Packing and pallet condition

Packing and International Shipping

Compostable sheets and films should be protected from contamination, unnecessary moisture, excessive heat and physical damage during storage and transportation.

Roll products should specify width, core, maximum roll diameter, maximum roll weight and winding requirements where these parameters affect the thermoforming or converting line.

Packaging and pallet arrangements can be discussed according to the material, dimensions, quantity and shipping method.

Why Choose HSQY for Compostable Sheets and Films?

Multiple Compostable Material Systems: HSQY supplies PLA, PLA/PBAT and PBS products rather than relying on a single biodegradable polymer.

Rigid Sheet and Flexible Film: The product family covers rigid thermoforming sheet as well as thin flexible packaging film.

Thermoforming Applications: PLA and PBS rollstock can be evaluated for trays, clamshells, food containers and other thermoformed packaging.

Packaging Material Selection: Buyers can compare clarity, flexibility, toughness, heat requirement and compostability targets before selecting PLA, PLA/PBAT or PBS.

Project-Specific Compliance: Food-contact and compostability documentation can be discussed according to the exact material, finished product and destination-market requirements.

Broader Packaging Portfolio: HSQY also supplies conventional PET, PP and CPET packaging materials, allowing buyers to compare different performance and end-of-life strategies according to the final application.

Information Needed for a Compostable Sheet Quote

Finished Product	Tray, clamshell, cup, lid, flexible film, produce packaging or other product
Material	PLA, PLA/PBAT, PBS or material recommendation required
Thickness	Required sheet or film thickness and tolerance
Width / Size	Roll width, sheet dimensions or custom cut size
Supply Format	Rollstock, film roll, sheet or another required format
Appearance	Clear, translucent, colored or another visual requirement
Thermoforming	Machine width, mold dimensions, draw depth and finished wall-thickness requirement
Flexible Converting	Printing, lamination, bag making, sealing or other film-processing requirements
Operating Temperature	Frozen, refrigerated, ambient, hot-fill or another defined temperature condition
Food Contact	Destination market, food type, contact temperature and required documentation
Compostability	Industrial compostable, home compostable or another specified end-of-life requirement
Required Standard	EN 13432, ASTM D6400, BPI or other required standard / certification
Quantity	Trial order, regular order quantity and estimated annual demand
Destination	Destination country and port

Compostable Plastic Sheet FAQ

What is a compostable plastic sheet?

A compostable plastic sheet is a thermoplastic sheet designed so that the appropriate material and finished product can biodegrade under defined composting conditions. Certification requirements depend on the product and destination market.

What compostable materials does HSQY supply?

HSQY currently supplies PLA thermoforming sheet, PLA/PBAT flexible film and PBS plastic sheet within the compostable-sheet product category.

What is PLA sheet made from?

PLA is polylactic acid, a thermoplastic commonly produced using renewable plant-derived feedstocks such as sugars obtained from corn or sugarcane.

What is PLA/PBAT film?

PLA/PBAT film is a blend combining PLA with PBAT. PBAT improves flexibility and toughness compared with rigid PLA, making the blend useful for flexible packaging applications.

What is PBS plastic?

PBS is polybutylene succinate, a biodegradable polyester used in packaging and other applications where flexibility, toughness and thermoforming capability are required.

Is every compostable plastic 100% plant based?

No. Bio-based content and compostability describe different characteristics. A compostable material can contain fossil-derived feedstocks, and a bio-based polymer is not automatically compostable.

Is PLA industrially compostable?

Suitable PLA formulations and finished products can meet industrial-compostability requirements. The exact certification scope, product geometry and thickness should be confirmed rather than applying a blanket claim to all PLA products.

Is PLA home compostable?

Standard industrial-compostable PLA should not automatically be described as home compostable. Home compostability requires separate evidence or certification for the actual product.

What is the difference between biodegradable and compostable?

Biodegradable is a broad description of biological degradation. Compostable is a more specific claim tied to defined composting conditions and often to a recognized testing or certification standard.

What is EN 13432?

EN 13432 is a European standard used for packaging intended to be recoverable through composting and biodegradation. Required documentation should be confirmed for the exact product.

What is ASTM D6400?

ASTM D6400 is a major North American specification for plastics designed to be composted in municipal or industrial aerobic composting facilities.

Is BPI certification the same as home compostability?

Not necessarily. Certification scope should be checked carefully because commercial-compostability and commercial-plus-home-compostability claims are different.

What thickness PLA sheet does HSQY supply?

HSQY's current PLA thermoforming sheet covers approximately 0.15–3 mm with maximum width of approximately 1300 mm.

What thickness PLA/PBAT film does HSQY supply?

The current HSQY PLA/PBAT film product covers approximately 0.02–0.2 mm with maximum width of approximately 1000 mm.

What thickness PBS sheet does HSQY supply?

HSQY's current PBS sheet covers approximately 0.15–3 mm with maximum width of approximately 1300 mm.

Can compostable sheets be thermoformed?

Yes. Suitable PLA and PBS sheets can be thermoformed into trays, containers and clamshell packaging. Processing conditions should be optimized for the exact material and sheet thickness.

Is PLA suitable for clear food packaging?

Clear PLA is widely used for suitable cold and ambient food-packaging applications such as produce trays, clamshells, cups and lids.

Can PLA packaging be microwaved?

Standard PLA packaging should generally not be assumed to be microwave-safe. If microwave heating is required, the exact heat-resistant grade and finished container must be validated for the intended heating cycle.

Can PLA packaging go in the oven?

Standard clear PLA packaging is generally not intended for conventional oven use. Ovenable applications require a different validated material and package design.

Is PBS more heat resistant than PLA?

PBS can provide useful moderate-temperature performance compared with standard PLA in suitable grades, but actual temperature capability depends on formulation, thickness, load and finished-product design.

Is compostable packaging safe for food contact?

Food-contact suitability is separate from compostability. The exact material formulation and documentation must comply with the applicable destination-market requirements and intended food-contact conditions.

Can a compostable tray be sealed with lidding film?

Suitable trays can be evaluated with compatible lidding structures. Seal temperature, pressure, dwell time and flange design must be validated, and all package components should be considered if the complete pack will carry a compostability claim.

Does compostable plastic break down in landfill?

A compostability claim does not guarantee rapid degradation in landfill. Compostable materials are designed for specified biological processing conditions, which are different from landfill conditions.

Does compostable mean marine biodegradable?

No. Industrial or home compostability should not be used as evidence of marine biodegradability. Different environments require different testing and claims.

Can compostable plastic be recycled?

Some biopolymers may be technically recyclable in dedicated systems, but local collection and sorting infrastructure varies. Buyers should follow the intended end-of-life route for the specific package and market.

Does printing affect compostability?

It can. Inks, coatings, adhesives, labels and laminated layers may affect the certification of the finished package. The complete construction should be evaluated when a compostability claim is required.

Can HSQY customize compostable sheet thickness and width?

Custom thickness, width and supply-format requirements can be discussed within the production capability of the selected PLA, PLA/PBAT or PBS material.

Can I request samples for thermoforming tests?

Available sample options can be discussed for evaluating thermoforming, clarity, flexibility, sealing, temperature performance and finished-packaging behavior.

What information should I provide for a quotation?

Provide the finished packaging application, preferred material, thickness, width, thermoforming or converting process, operating temperature, food-contact requirement, compostability standard, quantity and destination.

Request a Compostable Plastic Sheet Quote

Looking for a compostable plastic sheet manufacturer, PLA thermoforming sheet supplier, PLA/PBAT film supplier or PBS sheet supplier for sustainable packaging?

Send HSQY your finished product, required material or performance target, thickness, width, thermoforming or converting process, temperature conditions and purchasing quantity. If a compostability or food-contact certification is required, include the destination market and exact standard so the appropriate material and documentation can be evaluated.