Hot Melt Adhesive Film RFQ Specification Fields Buyers Can Use

Hot melt adhesive film RFQ specification fields inform a supplier what must fit, what may be proposed, and what still requires testing. A request for quotation should assist purchasing in comparing the same construction and allow the plant to define a meaningful sample trial.

Hot melt adhesive film RFQ specification fields describe application, construction, roll format, process limits, acceptance evidence and billing basis. Separate buyer requirements from supplier proposals prior to comparing prices or approving production.

Numerical examples are provided below. They’re hypothetical and are in no way related to actual Teng Yang pricing or product tolerances.

Define the adhesive film application before choosing a grade

An adhesive film inquiry may begin prior to a grade being selected. Describe the final assembly, the two bonding surfaces and the conditions the bond must withstand. Identify and confirm fixed machinery limits in advance. This gives the manufacturer a defined application against which to propose a product and explain the remaining uncertainty.

What application and end-use details should buyers provide?

Both substrates, their surface treatments and coating or finish details, the required bond area, expected movement, the assembly’s service conditions and any relevant washing, chemical exposure and heat requirements should be specified. Indicate how failure will be judged. A resin name alone allows the manufacturer to assume too much.

Teng Yang’s public records of hot melt adhesive film list PA, PES, EVA, TPU, and PO. The family names organize the inquiry; they don’t justify the suitability. For example, thermoplastic polyurethane is a polymer family rather than a proof that every TPU grade bonds every coated textile.

Define the bonding technology, too. A thermoplastic hot-melt film, a pressure-sensitive tape, and a thermosetting epoxy film shouldn’t share an unexplained approval route. Ask if the proposed material requires a cure step or achieves the intended state through the supplier’s specified heating and cooling process.

A common mistake is naming “nylon,” for example, while omitting a surface finish. Send the actual production substrate, or a clearly identified representative sample, so the supplier can judge the surface it will encounter.

Copy the RFQ specification fields into a supplier reply sheet

When supplying a response, the supplier should include the buyer’s requirement and evidence to support the proposed specification. Keep unresolved deviations. The buyer can request a provisional price with some properties open, but the approval of production requires agreed values and a named person to accept an exception to the request.

12-Field Requirement-to-Reply Sheet

The 12-Field Requirement-to-Reply sheet connects a buying requirement to a supplier answer, an evidence gap, and an approval owner.

Send the spreadsheet in an editable format and request the current datasheet in PDF format. Add columns for supplier document reference, each deviation, and buyer’s approval date. “According to our standard” is incomplete without referring to an attached revision. A specific answer is easier to negotiate than an implied commitment. The public abstract of ISO 21368:2022 connects fabrication and reporting records with evaluation of bonded structures. This reply sheet is an editorial buying aid, not a form prescribed by that standard.

Consider a hypothetical textile converter requesting a 1,000 mm adhesive width. The supplier responds with a 1,040 mm roll width, a proposed grade and an attractive price. Purchasing may think that response is wider adhesive coverage. The plant engineer, instead, asks for a cross-section: 1,000 mm is adhesive and the remaining width is liner overhang. Quality staff keep the grade marked “trial” because the customer’s coated fabric hasn’t yet been bonded. Finance can compare a preliminary material rate once the billing basis is known. None of those staffers needs to delay the initial query; they need different unresolved fields to remain visible until their own decision is ready.

For a 1,000 mm film on a 1,040 mm liner, the reply sheet must carry both widths. Procurement can accept a provisional quote while the plant checks roll fit, but a proposed tolerance or untested grade stays open until the responsible buyer approves it.

Separate film thickness, roll width and release liner dimensions

Record adhesive thickness, total supplied construction and release liner dimensions separately. Specify the method of measurement and note the condition of the material at the time of measurement. Adhesive basis weight and thickness describe different properties of the same material. Neither field describes the other without conversion factors and construction information mutually agreed upon.

As an example, a nominal thickness of 50 µm needs a label stating adhesive only, film plus liner, or a bonded layer after processing. State the tolerance for the nominal value and the sampling locations. If the film is textured or embossed, establish whether the proposed method can measure the characteristic being purchased.

The public abstract of ISO 4593:1993 excludes embossed film and sheeting from its mechanical scanning thickness method. That is a useful limitation, not a general directive to extend this method to all adhesive constructions. A suitable method agreed to by the supplier is required before accepting two thickness reports as comparable.

Typical error: Subtracting a catalog liner thickness from a total reading taken under different conditions. Request separate measured or declared values, as mutually agreed upon. For a silicone-coated release liner, specify the type of liner and the release side as well as the dimensions; “silicone liner” doesn’t define the roll.

There should be three clear statuses: fixed for limits imposed by equipment, proposed for the supplier’s candidate and trial pending for a property awaiting approval. Don’t interpret a tentative thickness as an order tolerance because it appeared in an early email.

A 50 µm adhesive and a 50 g/m² adhesive describe different quantities. Buyers should request thickness, basis weight and measurement conditions and compare the proposed construction with the approved trial. Missing density or construction information is a reason to keep the conversion open, not to assume.

State the heat, pressure and line constraints that matter

Process fields should describe the equipment, the actual measurement locations and the sequence used to produce a bond. A supplier’s recommended setting is only a trial starting point for the construction. Record contact time, cooling and release conditions in addition to heat and pressure so a successful sample can be reproduced.

What processing and production-line details should an RFQ include?

An RFQ should include the type of press or laminator, heating method, contact length or dwell time, line speed and cooling method. Provide the measurement technique for temperature and pressure. Give substrate heat constraints, web tension limits and the required release stage. The supplier would have enough information to identify process mismatch and recommend a trial.

Keep heater setpoint and measured bond-line temperature in separate fields. The same applies to a reading of the pressure gauge, applied force, and contact pressure. When viscosity data are available, request the grade, temperature, and test method rather than compare unexplained numbers. Review activation and service temperature separately: Bonding conditions and end-use exposure answer different questions.

ASTM D4800’s public scope distinguishes adhesive identification from material selection. Its classification system doesn’t determine if a grade fits within your attachment process. Ask the supplier to address the fixed line constraints directly.

Consider a buyer whose development press holds a specimen under heat for 20 seconds, while the intended laminating line exposes it for 5 seconds. These are hypothetical cases, which aren’t recommendations. The operator can’t reproduce the press trial merely by copying the displayed temperature. The two cases may expose the adhesive and substrates to different thermal histories, and cooling and/or release may also vary. The useful supplier response identifies this mismatch and proposes a line trial within the machine limits. The purchasing company should retain the original sample record, and give the supplier the line details; keep volume approval open until the relevant assembly result is available.

A 20 second press trial doesn’t confirm the outcome of a 5 second line exposure. The RFQ should differentiate the two processes and document temperature location, pressure definition and release timing. A production recommendation requires evidence from the intended setup before the buyer deems it an approved condition.

Compare quotations on the same billable basis

Prior to comparing quotations the buyer must define the construction, agreed quality requirements and billable quantity. Quotations won’t be ranked unless the basis of the quotation is supplied. Ranking is dependent on construction type and quality, as well as approved area and basis.

3-Quote Area Reconciliation

The 3-Quote Area Reconciliation method converts stated billable quantities into adhesive area and leaves unknown masses and unapproved constructions out of the rank order.

The following worked example assumes equally qualified material: an adhesive width of 1.00m, a liner width of 1.04m, an adhesive basis weight of 50g/m2 and a liner basis weight of 70g/m2. Prices are illustrative. Equivalence in quality includes application requirements such as appearance and finished dimensions where relevant, rather than peel strength alone.

For each linear meter, the hypothetical adhesive contributes 1.00 m × 50 g/m² = 50 g/m. The wider liner contributes 1.04 m × 70 g/m² = 72.8 g/m. This adds up to a total of 122.8 g/m or 0.1228 kg/m. Quote A therefore costs 0.1228 kg/m × 8.00 USD/kg = 0.9824 USD/m. The adhesive is 1.00 m wide, thus a cost of 0.9824 USD per m². For a 200 m order, A totals 196.48 USD and B totals 190.00 USD, before other costs. With finance, there’s a 6.48 USD difference. Quote C’s smaller kilogram number proves nothing about its area cost until the supplier states the core mass and the corresponding roll length.

NIST’s area guidance supports the width-times-length basis; its mass guidance supports the unit from gram to kilogram. Liner mass is a cost factor even with bare liner providing no effective adhesive. The assumed billing convention belongs to this example. It isn’t a rule that all film suppliers invoice liner mass.

In this example, the quote per unit area is 0.9824 USD/m², given an adhesive width of 1 m, a liner width of 1.04 m and an adhesive-plus-liner price of 8.00 USD/kg. The quote doesn’t include core mass, freight and tax. The buyer should change the example inputs to reflect their actual quote prior to deciding whether the offer is competitive.

Turn sample approval into a production order specification

Approval of the sample should show the construction, the type of test performed and the assembly conditions that passed. Incorporate those requirements into the purchase order and state how lots of production will be accepted. Keep the different roles of a batch certificate, a development sample and delivery-lot inspection visible in the purchasing record.

ASTM D1876-08(2023) describes relative T-peel resistance between flexible adherends. It is not a universal pass value for every assembly. The public scope of ISO 11339 also draws a firm boundary around the result:

“This test procedure does not provide design information.”

Before comparing tests, agree specimen dimensions, preparation, conditioning, speed, and the units in which the results are reported. Use the film peel test conditions guide to organize this discussion. A torn substrate is an observed failure mode. The buyer should determine whether the specimen meets the acceptance criteria of the assembly.

Sample-to-Order Decision Table

The Decision Table of sample to order separates evidence types so the approval of one item can’t silently approve the others.

NIST’s acceptance-sampling guidance describes choosing a random sample from the lot to inform its acceptance or rejection. It doesn’t make a development sample evidence for every later shipment. Agree the lot definition, sampling plan and decision rules; this worksheet doesn’t suggest a universal sample size.

A 50 µm approved sample doesn’t define an incoming-lot acceptance plan. Quality staff need the agreed thickness method and tolerance, lot identity, and a sampling rule. A certificate must be matched to its stated properties and the finished-assembly approval must be limited to the tested substrates and process.

Read the supplier reply before releasing the order

Read the offer in three stages: the technical fit, sample evidence, and the commercial completeness. An offer may justify a shortlist or a trial without being ready to take on volume. Record open items and determine who can close them. A well-documented, complete quotation or a familiar brand name doesn’t settle an untested application.

The public abstract of ISO 21368:2022 puts fabrication and reporting requirements and product recommendations separate from each other, and allows selective adoption of the guidelines for the structure concerned. Choose records relevant to the application. Do not demand the same document package for every order.

Use the existing overview to compare film manufacturers. Shortlisted companies should be asked to fill in the same fields. Global purchasing teams sourcing from China should confirm currency and delivery destination with each sales contact and agree who will bear the additional costs. Such provisions affect the comparison even if the technical proposal is unchanged.

Distinguish permission to trial from permission to scale. Confirm the grade and lot identity, document any dimensional exception and name the person who accepts it. An agreed quantity for a trial doesn’t mean all open tests for routine production have been closed.

What changing film constructions mean for the RFQ

A description of layers, functions, and test conditions is needed for each new film construction. What changes and what evidence applies to those changes? A new feature can be worth a trial, but a development result should not be treated as proof of commercial availability or performance in a different finished assembly.

A December 2025 study in Communications Materials investigated a UV-responsive adhesive for separating polyethylene/polyamide multilayer packaging. The laboratory systems and environmental modeling don’t establish Teng Yang capability or general commercial availability. The right question for buyers is whether the evidence for a proposed solution describes their own construction and separation.

Regard “green” as a request for a defined claim rather than an acceptance result. Give the described outcome and relevant evidence across the intended value chain. Various manufacturing changes can influence an approved construction. Ask if a solvent or a cleaning-agent requirement has changed when comparing proposed bonding processes. An industrial film supplier’s change of raw materials should prompt a review of the affected approved properties, even if the trade name remains the same. This buying response is more valuable than a film industry trend forecast that lacks an auditable basis.

Frequently asked questions

Incomplete specifications don’t block an initial inquiry, but they change the status of the reply. Questions below identify provisional pricing, development samples and order acceptance. Keep the missing data connected to the decision it affects rather than allowing a short e-mail answer to approve the entire application.

These worksheets are editorial buying aids based on public sources. They don’t report Teng Yang factory trials, certify an application or replace agreed product specifications. Standard references use public scope or abstract pages; the full paid procedures weren’t reproduced.