How to Source Custom TPU Film | Teng Yang

Short answer: To answer ‘how to source custom TPU film,’ define the finished application, lock the thermoplastic polyurethane film chemistry, thickness, width, hardness, surface, process window, tests, documentation and delivery terms in one request for quotation. Ask a polyurethane film manufacturer for custom TPU film solutions, and compare material fit and delivered cost rather than compare unrelated rolls.

TPU film is rarely “custom” because a buyer wants a different color alone. The difficult part is matching a polymer family and film construction to a substrate, a bonding process and a failure mode. A film that looks right on a sample card can still wrinkle during lamination, lose adhesion after washing or arrive in a width that results in unacceptable trim waste. The workflow below is designed to catch those problems before a production order is issued.

Because TPU is a polyurethane material, use the full polyurethane terminology in the brief and keep the film construction separate from the finished laminate.

Start with the Application and Failure Mode

Start with what the finished product must endure, not with “TPU film.” Write a sentence to state the substrate, joining process, the environment, and failure that isn’t acceptable. An example is “A clear polyether TPU film will laminate a coated textile by heat, remain flexible after repeated washing and avoid edge lift.” This provides a starting point to the supplier. Application and film construction examples are also described in the American Polyfilm FAQ.

Separate the job into four questions:

What’s the film doing? Is it acting as a barrier? A bonding layer? A skin? A decorative layer? An elastic element?
What’s it joining? Identify the fabric, foam, leather, nonwoven, plastic or coated surface. Adhesion is dependent on the actual pair.
How will it be processed? State the temperature of the press or rollers, dwell time, pressure, speed, method of welding and if the line is capable of drying or pre-heating the film.
How can it fail?List the priority: Priority is to be given to peel, cracking, yellowing, blocking, curling, bubbles, hydrolysis, hand feel, dimensional change, etc.

This helps avoid a sourcing error. This prevents a common sourcing error: asking three vendors for “the same TPU film” when one is pricing a general-purpose polyester grade, another a polyether grade and a third a converter-laminated product. These are very different products, even if the label is identical.

Lock the TPU Film Specification Before You Ask for Price

To get a comparable quote, controlled specs are necessary. The fields below are to be completed as first request, and marked as either fixed, target or supplier choice. Teng Yang publishes thickness, width, hardness, melting point and color as starting fields on its polyether TPU film page.

RFQ field	What to state	Why it changes the quote
Chemistry	Polyether, polyester or supplier recommendation; explain moisture, oil, cold or ultraviolet exposure	Soft-segment chemistry changes hydrolysis behavior, flexibility and chemical resistance.
Thickness	Target thickness, tolerance and measurement method	Gauge affects barrier, hand feel, yield, cycle time and roll weight.
Width and format	Finished width, slit widths, roll length, core and winding direction	Non-standard widths can add setup, trim and packaging work.
Hardness	Shore target or a physical hand-feel reference	Hardness affects flexibility, die cutting, sealing and surface feel.
Surface and appearance	Clear or color, gloss or matte, haze, texture and release-liner needs	Colorants, finish and liners can change processing and inspection.
Thermal window	Bonding or sealing temperature, dwell, pressure and line speed	The melting or softening behavior must fit the substrate and equipment.
Evidence and delivery	Tests, compliance documents, lot traceability, packaging, quantity and destination	Documents, sampling, freight and change control affect delivered cost and approval time.
Minimum order and lead time	Trial quantity, production quantity, sample lead time and repeat lead time	Small trials and repeat orders may use different setups and planning assumptions.
Storage and change control	Storage conditions, shelf life, lot release and advance notice for changes	A stable grade can still fail if storage or formulation changes are unmanaged.

Online public polyether pages of Teng Yang shows the same type of customization fields: thickness, width, hardness, melting point and color. Treat those as published capabilities, and clarify the actual range and tolerance for application for clear film or breathable constructions.

Don’t hide chemistry inside a product nickname. If the product will be exposed to prolonged humidity or wet processing, ask if a polyether TPU will be a better alternative than a polyester, and ask the supplier to explain the trade-off. If the product needs to be resistant to oil, abrasion, or a specific solvent, put these specific needs in the brief and ask whether the supplier can specialize the grade, and don’t assume a polyester TPU will always win.

For industrial applications, express the characteristics of the end product and its specific requirements in measurable terms. A supplier can then balance material properties, mechanical properties, durability and processability instead of promising a generic high-performance film. Terms like tensile strength, abrasion resistance and optical clarity should be defined by a test method and acceptance limit. State whether the film will be subjected to UV, printing, or contact with different materials, and identify the printer when printing is part of the process.

Specialty TPU film can be versatile across automotive and electronics projects in the wider materials industry. Apparel and sportswear uses need their own substrate and wash qualification, so the approval evidence still belongs to the actual construction. For a clear film, ask for optical clarity; for a membrane, ask whether a breathable layer and its breathability test method fit the application. A film manufacturer should tell which properties it can manufacture consistently at your requested gauge.

Choose the Right Supplier Type

The correct channel varies with which part of the product is changing. The TPU Fabrics manufacturer guide provides additional supplier-selection context.

Direct film manufacturer: Use this route when a standard formulation won’t work, when a non-standard gauge or width is needed, when a controlled softening point is needed, and when a repeatable roll-to-roll process is required.
Converter or laminator: A converter is used when the main issue is slitting, release liner, a fabric combination, coating adhesive, a printed or finished layer of composite.
Distributor: A distributor is used when a standard grade film is needed and the dimensions and the process window fit. A distributor can be efficient but it may not control the formulation or the extrusion line.

Always ask who owns the spec. If the supplier simply cuts a film, the original film maker controls the resin and thickness. If the supplier extrudes the film, but outsources lamination, define who owns the interface performance. A clear responsibility map shows where disputes occur when a roll passes a bare film test, but fails on the finished substrate.

Choose a supplier that can tailor the grade for a membrane application, document the change and support qualification. If sustainability or market trends is important to the project, request evidence for any sustainable or medical-grade claim; these labels aren’t interchangeable with a general quality certificate.

Build a Buyer-Ready RFQ

Send the same one-page brief to each supplier. When there’s an expectation of an annual volume greater than the first order quantity, state the expected annual volume and separate it from the first trial order quantity. Your request for proposal (RFP) should request the following: Use the supplier-document questions in the American Polyfilm FAQ when completing the RFQ.

Recommended chemistry and the reason it matches the exposure.
Nominal thickness, tolerance, width, roll length and core.
Hardness, color, surface finish and any release liner.
Processing window with the supplier’s preferred starting conditions.
Sample size, lot identification and test report for the sample.
The documents that show compliance or substance for the intended market.
The minimum order quantity (MOQ), sample lead time, production lead time, packing, Incoterm and change-notification.

Ask for exceptions in writing. “Equivalent” isn’t sufficient if the supplier changes the chemistry, gauge, finish or liner. Request a marked specification that clearly shows each change made to the specification.

Use a Sample-and-Test Gate Before the Production Order

A sample is representative only if you document the lot, construction and process history. The sample should be tested on the same equipment and the same substrate as that of the production; state each and every change. A useful release gate has four layers: For method scope, see ASTM D882 and ASTM D1876 before fixing the acceptance plan.

Layer	Example check	Release question
Film	Thickness, appearance, tensile and elongation under a defined method	Does the film itself meet the controlled specification?
Interface	Peel or shear after the planned conditioning cycle	Does the bond hold on the real substrate?
Process	Window study around temperature, dwell, pressure and speed	Is there a stable operating range rather than one lucky setting?
Use case	Wash, flex, humidity, cold, abrasion or chemical exposure as applicable	Does the finished construction survive its service requirement?

ASTM D882 and ISO 527-3 are examples of standards that address tensile testing of plastic films or sheets within stated scopes. ASTM D1876, meanwhile, covers T-peel tests of adhesive bonds of flexible adherends. These are distinct end points. A film can be strong, but the adhesive bond can be weak, and vice versa. These are different endpoints: a strong film can still have a weak bond, and a good peel value does not replace a film tensile measurement. Make sure the current edition of the specification, the geometry of the specimens, conditioning, and the laboratory capacity are known before putting a method in a purchase specification.

Record a control sample the conditioning medium, temperature, duration, and recovery time. Should any of these vary, consider it a qualification. A supplier’s generic claim that a grade is “high performance” is of little use.

Compare Quotes on Total Delivered Cost

Compare quotes only after you normalize the specification. A meaningful comparison would include at least these elements. A public TPU film roll listing such as DERFLEX is a market reference only; normalize each live quote before comparing it.

Cost line	Question to ask	Common hidden difference
Material	Are chemistry, gauge, width, finish and liner identical?	A cheaper polyester grade is compared with a polyether target.
Yield	How much trim or scrap does the roll format create?	A nominally cheap wide roll may waste more at the slitter.
Qualification	Are sample, test and documentation costs included?	Approval work appears later as an engineering charge.
Delivery	Are packing, freight, duties and the agreed Incoterm included?	Two “per kilogram” prices have different delivery responsibilities.
Failure exposure	What happens if a lot misses thickness or peel requirements?	Rework, line stoppage and replacement freight are ignored.

Hypothetical worked example: assume a buyer compares two quotes for the same 1,000 kg trial. Quote A is $8.00/kg with 6% trim and $900 freight. Quote B is $8.60/kg with 2% trim and $500 freight. Using only the stated assumptions, material plus trim is about $8,510 for A (1,000 × 8.00 ÷ 0.94) before freight, and about $8,776 for B (1,000 × 8.60 ÷ 0.98) before freight. Adding the stated freight gives approximately $9,410 versus $9,276. This worked example uses stated assumptions; apply your own assumptions when doing a market price assessment.

The table changes the buying discussion from “Which supplier offers the cheapest price?” to “Which proposal meets our specification?” Delivered cost should reflect our process risk.

What to Request from a Custom TPU Film Supplier

Before final approval, we’ll provide a controlled Technical Data Sheet, the lot sample number, test methods and conditioning, packaging, storage instructions and a change notification process, with food packaging requirements documented separately where applicable. If the application is regulated or involves skin contact, ask your own regulatory team which evidence is required; a general quality certificate doesn’t automatically prove end-use compliance. Measurement and test-method context is available from NIST publications; request the supplier evidence that matches your destination market.

If the supplier doesn’t control thickness across the roll, ask how out-of-specification lots are quarantined. Also ask if the same resin family, additive package, liner and winding method will be used in the production. A supplier who answers these questions clearly is easier to qualify than one that just sends a headline property.

How Teng Yang Can Support a Custom TPU Film Brief

[USER-DATA: https://tengyangfilm.com/about-us/] Shanghai Tengyang New Materials Technology Co., Ltd. describes its business as the research, production and application support of hot melt adhesive films, webs, powders and granules. Its public product page for polyether TPU film lists custom thickness, width, hardness, melting point and color fields, with application-specific formulation support. Those are public supplier statements, so use them as the starting point for a technical discussion and confirm the final range, tolerance, tests and lead time in writing.

When requesting Teng Yang’s assistance through the material recommendation form, include the same fields as for other suppliers (substrate, process, environment, target dimensions, hardness, color, annual volume, sample quantity, and required documents). With this information, the Teng Yang team can recommend a grade or indicate where a custom formulation is necessary.

Frequently Asked Questions

What should I send a TPU film supplier first?

Complete the application, substrate, joining process, service environment, failure mode, target chemistry, thickness, width, hardness, surface, color, quantity, and destination market. Also include test methods, acceptance criteria, and trade-offs. The first brief should provide enough information for a supplier to make the next quote comparable.

How do I choose polyether versus polyester TPU film?

Begin with the exposure and failure mode and work back from the end use. Polyether is often used in conjunction with low-temperature flexibility, wet processing, or elevated humidity. Polyester is often used for abrasion, strength, and oil resistance. The choice of chemistry is grade-specific, so provide a case for your conditions and qualify the finished laminate. Both families of polymers should be considered.

Do I need a manufacturer or a converter?

A direct film manufacturer is desired when any formulation, gauge, width or softening change is required. A converter is preferable when the main demand is slitting, release liner, coated or laminated construction, or a finished composite. A distributor can work well for a documented standard grade. Know who owns the film specification, and who’s responsible for the bond interface, prior to approving a sample.

How should I approve a custom TPU film sample?

Record lot sample, construction and process settings, and test the film and the finished bond separately. Use the same substrate, equipment and conditioning cycle as production if possible. Define what it means to pass a test for thickness, appearance, tensile, peel, wash, flex, and/or chemical exposure. A sample that passes the bare film test and fails on the real substrate isn’t production ready, and a single successful press setting isn’t a process window.

How can I compare two custom TPU film quotes fairly?

Equalize currency, thickness, width, finish, liner, roll format, quantity, test package, packaging and terms of sale, prior to price comparison. List trim, qualification, freight, duties and the cost of an out-of-specification lot separately. Deviations from your requirements should be listed by both suppliers. The least expensive unit price may result in a higher delivered cost if its yield, documentation, or process stability is worse.

Copy the seven RFQ fields above into your sourcing request, add the substrate and process details, and ask each supplier to provide a marked-up specification, sample plan, test method, and a matched delivered quote. If you have a starting discussion for a custom polyether TPU film, send the brief through Teng Yang’s contact form.

References and Sources

Teng Yang company information and polyether TPU film capabilities (manufacturer-published information; confirm final specifications in writing).
ASTM D882, tensile properties of thin plastic sheeting within the standard’s stated scope.
ASTM D1876, T-peel resistance of adhesive bonds between flexible adherends.
ISO 527-3, tensile testing conditions for films and sheets.
National Institute of Standards and Technology, a reference point for measurement and test-method context.
DERFLEX TPU film reference, only for market benchmarking; confirm all supplier-specific ranges with the issuing manufacturer.