Automotive adhesives
Head & tail lamp sealing, interiors, felt and carpet bonding, wire harnessing.
What this line needs from a hot melt
A car is the hardest place an adhesive has to live. A head lamp seal goes from a freezing car park to the heat of a switched-on lamp thousands of times and must not crack. Trim in a parked car in May sees cabin temperatures far above anything a packaging line ever reaches. And anything near the engine or the fuel line may be splashed with diesel or petrol.
That is why automotive grades are chosen on softening point and flexibility first, and on price second. We supply lamp sealing, interior trim, felt and carpet bonding, wire harnessing and filter grades — and are the largest supplier of hot melt adhesives to India’s automobile industry.
Tell us this much
The more of this you can give us, the more useful our first reply will be.
- Peak temperature the part actually sees — cabin, boot or engine bay
- Substrates on both sides: PP, PC, PMMA, ABS, felt, carpet, metal
- Application method: bead, dot, spray or robot-dispensed
- Any fuel, oil or cleaning-chemical contact
- Odour and fogging limits, if the part sits inside the cabin
If this is happening on your line
The faults we are called out to most often in automotive, what actually causes them, and the grade we would put on the line.
Lamp seal cracks after thermal cycling
Why it happens. The grade is hard enough to seal but too rigid to move with the housing.
What we would do. A high softening point synthetic rubber that stays flexible — UPT-4748/1 (140°C) for PP/PC housings with PC or PMMA lenses, UPT-4344 for PMMA tail lamps.
Felt or carpet lifts after a hot summer
Why it happens. The softening point is below the cabin temperature the part actually reaches.
What we would do. Move up in softening point: UPT-6588 sprayable polyolefin for felt to carpet, UPT-8452 (145°C) or UPT-8432 (150°C) where foam is fixed inside a boot or wheel arch.
Bond will not hold on untreated polypropylene trim
Why it happens. EVA does not wet untreated polyolefin surfaces properly.
What we would do. Use a polyolefin-based grade — UPT-6266 for interiors, which also keeps odour low in the cabin.
Bond softens where diesel or petrol can reach it
Why it happens. Standard EVA and rubber grades are not resistant to aliphatic hydrocarbons.
What we would do. This needs a polyamide grade from our pilot plant, not a standard EVA or rubber hot melt — tell us the fluid and the contact time and we will trial one on your part.
Grades proven in automotive
Covering automotive. Every grade below is in current production and supported by a free trial sample of up to 1 kg.
Not seeing the right fit?
These are the published grades. The full portfolio runs past 250, and our R&D team develops new formulations every year — including polyamide chemistry from our pilot plant.
- Send the substrates, line speed and service temperature
- We shortlist from the full portfolio or formulate to your brief
- Free trial sample up to 1 kg, run on your line with our team present
- Applicator, nozzle and pattern recommended with the adhesive
Ready to trial a grade on your line?
Free samples, technical datasheets and an engineer on site — anywhere in India.