Quick Answer
Compostable and biodegradable cast film resin is a PLA/PBAT based biopolymer compound used to manufacture cling film, stretch film, lamination film, heat-seal film, and food packaging on conventional slot-die cast extrusion lines. Procurement teams searching for compostable cast film resin manufacturers in India need a supplier who compounds the resin in-house, holds IS/ISO 17088 certification, and can supply trial quantities. UKHI manufactures EcoGran compostable biopolymer granules in-house at our facility in IMT Faridabad, Haryana. EcoGran cast film grades are drop-in compatible with existing PE and PP cast lines, IS/ISO 17088 certified, FSSAI certified for food-contact applications, and priced between 120 and 185 rupees per kg depending on grade and volume. We ship free samples within seven days.
What to Look for in a Compostable Cast Film Resin Supplier in India
Procurement teams should verify a few things about the compostable cast film resin supplier before placing even a trial order.
CPCB certification
Under the Plastic Waste Management Rules, any company that manufactures or sells compostable plastics in India must hold a valid Central Pollution Control Board certificate.
IS/ISO 17088 test reports
IS/ISO 17088 is the baseline Indian standard for compostable plastics. A manufacturer of biodegradable and compostable cast film resin should be able to provide NABL-accredited lab reports, typically from CIPET.
In-house compounding versus reselling
Procurement teams should check whether the supplier compounds the compostable cast film granules in-house or simply resells imported resin. A manufacturer who compounds their own biopolymer resin can adjust the formulation for a specific cast film application. A reseller cannot do this.
Trial support
A reliable supplier of compostable cast film resin should be willing to supply 100 to 500 kg of trial material in a trial order, so the converter can run the resin on their actual cast extrusion line for 2 to 4 hours of stable production.
Local manufacturing
Look for a compostable cast film resin manufacturer in India who can ship quickly and offer lower prices than suppliers who import the granules or the raw material.
At UKHI, we compound our EcoGran compostable biopolymer resin in-house at our facility in IMT Faridabad, Haryana.
What Specifications Matter When Buying Compostable Cast Film Resin
Converters looking to buy PLA PBAT cast film resin should ask the supplier for a technical datasheet and check the following numbers.
| Specification | What to check in compostable cast film resin | Why it matters for cast film production |
| Melt temperature | 150 to 165 degrees C | Compostable cast film resin processes at lower temperatures than conventional PE. |
| Chill roll temperature | 25 to 30 degrees C | Rapid cooling on the cast roll prevents crystallisation. This is what gives compostable cast film its transparency and gloss. |
| Melt flow rate (MFR) | 2 to 4 g per 10 min (at 190 degrees C, 5 kg load) | The MFR of the compostable cast film granules must match the flow range of conventional cast grades so the resin runs smoothly on standard slot-die lines. |
| Pre-drying | 70 degrees C for 2 hours, moisture content below 0.05% | PLA-based compostable resins absorb moisture from the air. If the resin is not dried properly before extrusion, hydrolysis can occur. Hydrolysis ruins film clarity and reduces mechanical strength. |
| Gauge range | 8 to 40 microns for cling, stretch, and lamination films. 200 to 400 microns for thermoformed trays. | The supplier should confirm which gauge range their specific biodegradable cast film resin grade supports. |
| Elongation | 300% or higher | High elongation ensures the compostable cast film does not tear during wrapping, stretching, or transit. |
| Tensile strength | 15 MPa or higher | Tensile strength of compostable and biodegradable cast film resin must be comparable to conventional C8-LLDPE grades for the film to work in real packaging conditions. |
| Heat seal temperature | Below 110 degrees C | Lower seal temperatures allow faster line speeds during bag-making or tray-sealing. |
| Food contact certification | FSSAI certified, EU 10/2011 migration limits | Compostable cast film resin used for food wraps, bakery films, or tray lidding must carry food safety certification. |
Which End Products Can Be Made from Compostable Cast Film Resin
Compostable cast film resin is the raw material from which many packaging products can be made on flat-die (slot-die) cast extrusion lines.
- Compostable cling film can be produced by casting the resin at 8 to 15 microns.
- Biodegradable stretch film can be made by casting the resin at 15 to 25 microns.
- Compostable lamination film can be manufactured by casting the resin at 12 to 25 microns.
- Compostable heat-seal film can be made by casting the resin at 20 to 40 microns.
Note: Some of these products, such as stretch film and cling film, can also be manufactured through blown film extrusion.
How Much Does Compostable Cast Film Resin Cost in India
Prices of compostable cast film resin in India depend on the following factors:
- polymer blend,
- the specific grade,
- order volume, and
- whether the resin contains functional additives.
Raw resin pricing
The price of certified compostable and biodegradable cast film granules from Indian manufacturers is between 120 and 185 rupees per kg.
Blended PLA/PBAT grades for standard cast film applications are priced between 150 and 185 rupees per kg.
Filler-modified grades made from compostable bio-fillers such as starch or calcium carbonate compounds are priced in the 120 to 150 rupees per kg range.
Per-kg cost versus conventional plastic.
On a per-kg basis, compostable cast film resin costs 2 to 3 times more than conventional PE resin. This premium exists because India still imports key biopolymer inputs like raw PLA and certain PBAT grades. However, per-unit cost tells a different story. Compostable and biodegradable cast film resin can be downgauged significantly and still made to retain mechanical strength. As a result, the cost per metre of film can work out lower than conventional plastic film.
For an exact price per kg on our EcoGran cast film resin grades, procurement teams can share their thickness, gauge, and annual volume requirements, and we will quote against those inputs.
Why Converters and Brand Owners Buy Compostable Cast Film Resin from UKHI
UKHI is a material science company that manufactures compostable and biodegradable biopolymer resin in-house at our facility in IMT Faridabad, Haryana. Here is what we offer to converters and brands buying compostable cast film resin in India.
- We compound our EcoGran compostable biopolymer granules in our own facility. We are not a trader or reseller. We control the formulation from molecular design to the finished granule.
- Our EcoGran compostable cast film granules are drop-in compatible with conventional cast film extrusion lines. Converters do not need new slot dies, chill rolls, or winders to process EcoGran resin.
- We hold IS/ISO 17088, CIPET test reports, FSSAI, GMP, ISO 9001, and ISO 14001 certifications for our EcoGran range.
- EcoGran is formulated to be cost-competitive with conventional plastics.
- UKHI’s biopolymer technology is backed by institutional partnerships with IIT Guwahati, IIT Mandi Catalyst, and IIM Bangalore NSRCEL.
Procurement teams who want to evaluate EcoGran compostable cast film resin on their own cast extrusion line can request a free sample, which we will ship within seven days at no cost.
Frequently Asked Questions About Compostable Cast Film Resin in India
Can compostable cast film resin run on existing PE and PP cast extrusion lines?
Compostable cast film resin that is formulated as a drop-in replacement can run on conventional PE and PP slot-die cast extrusion lines without requiring new dies, chill rolls, or winders.
What is the price range for compostable cast film resin in India?
Certified compostable and biodegradable cast film resin from Indian manufacturers is generally priced between 120 and 185 rupees per kg.
Is compostable cast film resin suitable for food packaging?
Compostable cast film resin can be used for food-contact applications such as cling wraps, bakery films, tray lidding, and fresh food packaging.
What is the difference between compostable cast film resin and blown film resin?
Compostable cast film resin is designed for flat-die (slot-die) extrusion, where molten resin passes through a flat die and is cooled rapidly on a chill roll. Compostable blown film resin is designed for ring-die extrusion, where molten resin is inflated into a bubble. Cast film extrusion produces film with higher optical clarity, tighter gauge control, and better surface gloss. Blown film extrusion produces film with higher tear resistance and impact strength.
Does UKHI provide free samples of EcoGran compostable cast film resin?
We ship free samples of our EcoGran compostable cast film resin within seven days at no cost.
