Industrial Bulk Adhesive Manufacturer Hot Melt Adhesive Pellets & Granules, TPU, EVA, PA, PES & PO, Factory-Direct

Bulk hot melt adhesive pellets and granules are intended for converters who process raw polymer material into finished bonded products, rather than glue-gun sticks for hobby craft. Because Tengyang formulates across five polymer chemistries — TPU, EVA, PA, PES, and PO — you can specify and receive a garment lamination line, an edgebanding cell, and an electronics potting station all from the same facility. We provide actual grade data, not generic “industrial strength” images of a product, and will OEM customize for your application on formulation thickness, melting point, color, and viscosity band.

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Hot Melt Adhesive Pellets and Granules TPU EVA PA PES PO

Industrial Bulk Hot Melt Adhesive Pellets

Polymer Chemistries
(TPU/EVA/PA/PES/PO)

85–260°C

Application Temperature
Span Across Grades

OEM

Custom Thickness /
Melting Point / Color

ISO 9001

Manufacturing Quality
System

Bulk Sourcing Challenges, How a Multi-Polymer Pellet Manufacturer Solves Them

Industrial hot melt adhesive pellets and granules are thermoplastic feedstocks that a converter re-melts through a tank-and-nozzle system or extruder to bond materials as varied as fabric, nonwoven fiber, metal, and leather -- unlike a consumer glue-gun stick.

Industrial Hot Melt Adhesive Sourcing Processing

Supply Chain Consolidation

Most problems encountered in sourcing for this product family don't concern the adhesive itself. For a manufacturer with multiple lines of EVA and PA, typically two suppliers are required, along with their corresponding minimums and grade documents; most suppliers for hot melt focus on a single family of polymers. If a converter is using a trading company, it further complicates matters, as these firms supply whichever grade they've in stock for that week, potentially resulting in variable viscosity and softening points from bag to bag without supporting documentation explaining why. None of these challenges are resolved by finding a cheaper pellet; the issue is resolved by consolidating onto a manufacturer who internally formulates all five chemistries and can provide proof of the grade supplied.

In-House Formulation

Tengyang manufactures TPU, EVA, PA, PES, and PO hot melt pellets and granules all under one roof, with the capability to OEM customize the product’s thickness, width, melting point, color, and viscosity band. This allows a single purchase order to fulfill the needs of both a garment lamination line and an electronics potting station, eliminating the need to split business with two different vendors.

TPU EVA PA PES PO Polymer Chemistries Manufacturing

Hot Melt Pellets vs. Solvent-Based Adhesive, An Honest Comparison

Hot melt isn't an ideal substitute for all solvent-based bonding, and any supplier claiming otherwise isn't addressing the tradeoff honestly. Solvent-based adhesives typically hold a stronger initial bond and better long-term resistance to sustained heat, chemical exposure, and moisture in demanding applications. Hot melt pellets win on processing economics instead: no drying or curing step, no VOC-emission handling, and a bond that set in one to ten seconds instead of minutes to hours.

Factor	Hot Melt Adhesive Pellets	Solvent-Based Adhesive
Cure / set time	1–10 seconds (thermal)	Minutes to hours (evaporative)
VOC handling required	None – 100% solids, applied molten	Ventilation / VOC abatement typically required
Equipment	Heated tank + nozzle or extrusion feed	Coating station + drying tunnel
Reworkability	Reheatable – bond can be reset	Generally not reworkable once cured
Initial bond strength (typical)	Adequate for most industrial bonding; lower than solvent-based	Higher initial bond, better long-term chemical/moisture resistance

Note: The table should be interpreted as a decision guide, not a sales promotion. If your application requires significant long-term resistance to chemicals and you need a stable joint, solvent-based products may be appropriate. If you require rapid, VOC-free, and reworkable bonding across a high-speed production line, however, then pellets and granules are more suitable-which explains why they've become standard for garment lamination, edgebanding, and electronics assembly lines.

What Buyers Are Actually Searching For

As with a “hot melt adhesive pellets near me” or a “hot melt adhesive pellets manufacturer USA” search (where geographic proximity doesn't ensure chemistry similarity - a domestic distributor sourcing from overseas varies batch to batch more than a manufacturer selling globally), searching “hot melt adhesive pellets wholesale suppliers” typically returns a generic industrial hot melt glue that a reseller has in stock, not something that's formulated and traceable back to a batch record.

Tengyang Pellet & Granule Grades, Chemistry, Spec Table & Grade Selection

Specifying the wrong chemistry against your process temperature is a costly problem to catch after a bulk order has already shipped, because tank-and-nozzle equipment is normally locked to a fairly narrow operating window. Tengyang engineers each grade around a target process window rather than selling a single generic "hot melt" spec across every application -- the same anti-blocking, dosing-precision logic covered in published granule-formulation patent literature -- and our in-house, ISO 9001-documented production records identify which grade version shipped in a given batch.

Five polymer families cover the bonding envelope most converters need for manufacturing. Ranges below are cross-referenced from publicly published grade catalogs across the industry for each chemistry class, not a first-party Tengyang test report. Exact viscosity and softening point are tuned per formulation, so be sure to request the datasheet for the grade specified for your equipment.

Industrial Hot Melt Granule Formulations

Chemistry	Softening Point	Application Temp	Viscosity (typical)	Open Time
TPU	85–150°C	115–190°C	800–5,000 cps	3–10s
EVA	70–95°C	90–180°C	1,200–9,000 cps	2–8s
PA (Polyamide)	85–200°C	140–260°C	800–10,000 cps	1–10s
PES (Polyester)	100–145°C	125–165°C	300–2,500 cps	5–20s
PO (Polyolefin/APAO)	90–160°C	130–220°C	500–6,000 cps	2–12s

Finish varies by grade too - expect clear-to-amber pellets for general purpose product assembly work, and specialty formulations tuned for foam lamination where flexibility matters more than raw adhesion. Color and clarity are cosmetic, not a performance indicator.

Engineering Note, Reading a Viscosity Spec

Viscosity is generally provided based on low-shear lab measurements according to ASTM D3236 for hot melt adhesives up to approximately 200,000 mPa·s at 175°C. Note ASTM's caveat that these laboratory results represent the behavior in the test instrument and don't always predict high-shear performance in your application equipment. So the value you see on the datasheet for viscosity should be used as a starting filter rather than as the final decision -- a small batch trial is recommended before placing a large order.

The Polymer-to-Process Match Panel

Buyers often get bogged down trying to find the right grade out of a catalog with dozens of product numbers with no discernible order. We created this panel to link your equipment and application to the appropriate chemistry category so you can then zero in on the specific product grades.

Process / Equipment	Recommended Chemistry	Typical App. Temp Band	Low-Pressure Molding Fit
Re-extrusion into film / nonwoven web (feedstock)	TPU, EVA, PES, PA	Matches downstream line	—
Low-pressure injection molding / electronics potting	PA, PO	140–220°C	Yes – primary/secondary chemistries
Automatic edgebanding	EVA (standard), PA (high-heat upgrade)	160–210°C	—
Portable / manual edgebanding	EVA (low-temp grade)	120–160°C	—
Garment & footwear lamination feedstock	TPU, PA	Matches downstream line	—
Automotive interior lamination	PA, PO	150–200°C	—
Packaging & bookbinding	EVA	90–180°C	—

Polymer Chemistry Process Matching Equipment

Only one of the applications on this list - low-pressure molding - is really a case of the chemistry being restricted to one particular chemist, that being PA. Review of major polyamide hot melt manufacturer catalog specifications found the process to be nearly entirely occupied by PA chemistry with PO a distant second, while no specific grades for PES, EVA, or TPU were advertised, though in theory these can be formulated. Independent industry material from an established low-pressure molding adhesive supplier confirms the same pattern - hot melt polyamide resin runs one-component, UL94 V-0 approved, and holds a typical cycle time near 90 seconds, none of which is claimed for the other four chemistries in this table. If you're being quoted on a low-pressure molding grade in a chemistry other than PA or PO, be sure to question why this is the outlier.

Our buyers often come to us with an established equipment-related target temperature range in mind, but not a clear sense of which of the five available chemistries is most likely to achieve it without being over-engineered. The match-up between temperature and chemistry is the very first problem we tackle.

— Tengyang Engineering Team

Granules vs. Film, Web & Powder, Choosing the Right Hot Melt Form Factor

Tengyang provides hot melt adhesive in four formats - film, granules/pellets, powder, and web (nonwoven). The choice is process-specific, not chemistry-specific; specifying the wrong form is a common and expensive mistake, because fixing it usually means a full equipment change, not a simple re-order. Tengyang engineers document which format was shipped against which purchase order, so a mismatch is traceable rather than a guessing game -- the same particulate-vs-sheet-vs-powder distinction that shows up in hot-melt particulate-form patent filings.

Form	Processing Method	Typical Equipment	Best Fit
Granules / Pellets	Re-melt tank feed or extrusion feedstock	Tank-and-nozzle hot melt units, extruders	Bulk continuous dispensing; re-processing into film or web
Film	Pre-cut sheet, direct lamination	Heat press, roll-to-roll laminator	Precise, repeatable thickness control
Web (nonwoven)	Pre-formed porous sheet	Heat press	Breathable bonding layer between fabric plies
Powder	Scatter-coat application	Powder scatter coater, curing oven	Fine, even coating across a textile surface

Granules and pellets occupy the raw material end of this spectrum; some of our own converter clients use pellets for reprocessing into their own web or film product, and this is why we specify price per kilogram, and give options for OEM thickness and melting point, rather than sheet dimension. Ordering the wrong format against your process is the mistake we see most often from first-time buyers -- ask before you order if you're unsure which of the four fit your line.

Where Tengyang Granules Are Used, Applications & Outcomes

Claiming a chemistry "works everywhere" is the mistake that costs buyers a failed batch later, because the wrong grade in the wrong application is a problem that only show up after the line is already running. The applications list that follows describes actual production-line use, not a blanket claim.

SYS-01

Garment & footwear

TPUs and PAs are processed via re-extrusion into bonding films for seam sealing, attachment of waistband elastic, and laminating sole and upper layers of shoes; the same applications for hot melt formats can be found in the industry patent literature as precisely measured and dosed particulates. Converter clients who need this granule chemistry already re-extruded into a ready-to-press sheet should see our TPU hot melt adhesive film for garment accessories instead of ordering raw pellets for in-house extrusion.

SYS-02

Electronics & low-pressure molding

PA and PO are used for encapsulating small components and electrical connectors when chemical inertness in hostile environments is needed for resistance to oil, plasticizers, and solvents, because a general-purpose chemistry would degrade under that exposure; this is the reason PA dominates this process across the industry, including within our own catalog.

SYS-03

Automotive interior

PA and PO chemistries are used to laminate automotive interior trim panels, headliners, and acoustic materials where performance over the course of thermal cycles, rather than ultimate tensile strength, is key. For this application in pre-formed film rather than pellet form, see our TPU hot melt adhesive film for automotive interior bonding.

SYS-04

Edgebanding & woodworking

EVA is the primary choice for edgebanding; however, for higher performance and wider operating windows on the highest end furniture lines, we offer an upgraded PA grade.

SYS-05

Packaging & bookbinding

EVA is a workhorse chemistry for automated packaging equipment such as case packing, cartoning, and spine binding for general industrial packaging. Standard Tengyang granules are formulated for general industrial packaging; however, they aren't cleared for food-contact applications under 21 CFR 175.105 (see Certifications) - food-grade requirements need a separate evaluation from our technical team before specification for an adjacent packaging line.

Procurement Guide, MOQ, Lead Time, Packaging & OEM Customization

Customers often say the most costly mistake in sourcing this product isn't about the unit cost; it’s about in-production problems that emerge once the bulk order arrives-such as incompatibility of your substrate or equipment, tank overflow from unfamiliar handling profiles, or the subtle creep of a commercial batch away from the approved sample. Below, we break down the pricing factors, and then follow up with a practical checklist designed to prevent those in-production errors before your bulk PO is issued, not after.

What Drives Your Quoted Price

We factor in your selected chemistry and the desired volume as well as format and any custom color, melting point, or viscosity band, your desired certification package and the final shipping and delivery terms. Contact us for a detailed quotation reflecting your application parameters.

(From standard industrial adhesive sourcing procedures - work through these prior to your initial purchase of commercial quantities, not afterward).

[ 1 ]

Validate that the approved sample and commercial batch have been documented as identical.

[ 2 ]

Perform application tests on your actual substrates, not just those on the datasheet.

[ 3 ]

Document open time and cure/set time at your production speed, not merely using supplier guidelines alone.

[ 4 ]

Measure coating weight/dose using your own equipment and line settings, not that of your supplier's lab.

[ 5 ]

Complete all necessary environmental exposure testing required by your application specification before committing to large quantities.

[ 6 ]

Produce a production trial batch of your commercial quantities before placing your main order; don't rely solely on the lab sample.

[ 7 ]

Ensure you've received all relevant technical and regulatory documents including your TDS, an SDS meeting hazard communication requirements, and any applicable compliance declarations.

[ 8 ]

Verify that the first commercial-volume bulk shipment matches your approved sample prior to putting it into your production line.

Sure, the disadvantage of purchasing adhesive pellets from an overseas vendor is very real: shipping transit time and your inability to get your hands on the batch before it leaves the factory. We mitigate that through a verified sample-to-bulk match process; we use the exact same grade specification that moves from your approved sample to your commercial shipment, supported by a batch record that says “this is the one,” rather than relying on a promise of “it’s the same glue.”

Buying solely based on unit price is overwhelmingly the single biggest buyer’s regret in this space. A lower cost pellet that causes even minimal processing defects or slowdowns quickly costs you far more than it saves you in just a single production run. OEM grade custom formulation (thickness, width, melting point, color, viscosity band) is available for qualified order volumes and MOQ and lead time varies based on chemistry and level of customization, so request a quote with your target volume for an exact number instead of a range.

Quality, Certifications & Compliance

Tengyang produces to an ISO 9001 quality management system and maintains incoming raw material inspection and batch-level production records, same category documents buyers should have a adhesive manufacturer provide for a bulk order. (This isn't unique to Tengyang).

ISO 9001

Manufacturing QMS

REACH / RoHS

Certification details available on request

SDS

Provided per shipment, all grades

Batch Traceability

Production & QC records on file

A Note on Biodegradable Claims

Some hot melt vendors market ASTM D6400 or EN 13432 certified biodegradable grades. Both standards are valid, but they're specific to industrial composting (they don't guarantee decomposition in a home compost heap or the environment at large) and require ongoing accredited third-party testing. We don't publish a biodegradability standard number with a grade unless we can hand you the supporting certificate; ask which grades are certified if composting is a requirement for your application.

Safety Data Sheets Are a Shipping Requirement, Not a Courtesy

Under OSHA 29 CFR 1910.1200(g) compliant hazard communication systems, a manufacturer should provide you with a properly structured Safety Data Sheet-outlining handling, storage, transport, and exposure control measures-on or before their first delivery of a hazardous product. Tengyang includes an SDS with every grade shipped-not an option you've to hunt down afterwards.

Tengyang Industrial Adhesives Engineering Tools

Access our specialized technical tools designed for materials engineers and factory procurement to streamline adhesive selection, verify bulk readiness, and compare polymer specifications.

TOOL 01

Frequently Asked Questions

Is there a real difference between "pellets" and "granules"?

Not from a functional standpoint. The terms describe the same dense solid feedstock material but differ slightly in particle size; some just use the phrase "hot glue" casually, and suppliers use the two words inconsistently, so it's wise to confirm the actual particle size and shape in your quote, not just the terminology.

How does PA hot melt compare to PUR hot melt adhesive?

PA (polyamide) hot melt is a thermoplastic and will physically bond as it cools; if you need to undo a joint, it can be reheated and reworked. PUR (polyurethane reactive) hot melt begins in the same manner but then cures further in ambient moisture to create a permanently bonded, thermoset bond. In return for loss of reworkability, it delivers superior strength and chemical resistance for the lifetime of your product. Choose PA when the ability to revisit or rework joints will be required at some point in processing or in the product's lifecycle; choose PUR for joints that need to be permanent and must withstand consistent heat and moisture.

Why does EVA end up as the default chemistry for packaging and edgebanding?

Mostly speed and cost. EVA grades process quickly at relatively low temperatures and bond well to porous, fibrous substrates including wood veneer and corrugated board -- the most common substrates on packaging and edgebanding lines. The trade-off is lower heat resistance in service than PA or PO, so EVA is a poor choice for parts that see sustained high temperatures once they're installed.

Which softening point should I expect for each chemistry?

Around 70-95C for EVA, 85-150C for TPU, 85-200C for PA, 90-160C for PO and 100-145C for PES; however, each individual grade will fall somewhere along the band according to the target application temperature, so it’s recommended to look for the grade spec that matches your process, not the general range.

Do you offer a biodegradable or compostable grade?

Only when we have the actual documents to back it up. Both ASTM D6400 and EN 13432 require testing by a third party and refer specifically to industrial composting environments, so we never attach either number to a grade without a valid certificate on hand; tell us if compostability is a strict requirement and we can verify current availability.

Can PA or PO granules handle low-pressure molding?

Yes-that’s exactly where the two chemistries are formulated to sit. EVA, PES, and TPU aren’t typically formulated for this process, so go with PA or PO if that’s your application type.

Can you match a competitor's grade or a sample we send you?

Send us your sample and any data sheets you've. We'll compare the chemistry, softening point and viscosity band to our current portfolio to find the closest available, and then we'll do an in-person sample to sample comparison with your supplied sample to confirm.

Which paperwork ships with an order?

A Technical Data Sheet (TDS), Safety Data Sheet (SDS), and certificate of analysis for the specific batch, as standard on every order -- because we document production against ISO 9001 records rather than assembling paperwork after the fact. REACH, RoHS, or other application-specific compliance records can be arranged before shipment; flag what your import process needs and it travels with the order.

What's the minimum order quantity for OEM-customized grades?

Our minimum order quantity will vary depending on the chemistry selected, and the extent of customization. Color, softness, viscosity, and width (in pre-cut sheets) are the most common areas where customization increases MOQ. Requesting a quote with your specific requirements is best-rather than trying to make assumptions about our generic MOQs.