What Is a Solventless Laminating Machine?
What Is a Solventless Laminating Machine?
A solventless laminating machine bonds two or more flexible films using a reactive polyurethane adhesive that cures without solvents, producing food-safe, eco-friendly multilayer packaging. XIAOPAI is an authorized distributor of Sinstar solventless laminating machines, supplying them as part of one-stop flexible packaging lines—film blowing, printing and slitting—with turnkey solutions for global converters.
1. Definition
A solventless laminating machine is a flexible-packaging converting device that joins substrates (PET, BOPP, PE, aluminum foil, paper) with 100% solid, solvent-free polyurethane adhesive. Unlike solvent-based (dry) lamination, it emits zero VOCs, needs no drying oven, and cures at room temperature—cutting energy use by up to 60% versus dry lamination [industry standard comparison].
2. How It Works
Coating – A metering system applies a precise layer of two-component PU adhesive to the primer web.
Nip lamination – The adhesive-coated web meets the second substrate between chilled steel rollers under controlled pressure.
Curing – The bonded reel cures at ambient temperature (typically 24–48 h) until the adhesive reaches final bond strength.
Rewind & slit – The laminate is rewound and later slit to final roll width on a slitting machine.
3. Key Parameters
Parameter | Typical range | Why it matters |
Web width | 600–1300 mm | Matches your printing/convert width |
Machine speed | 300–450 m/min | Throughput per shift |
Adin mixing | Auto 2-component | Dosing accuracy, waste |
Substrates | PET/BOPP/PE/foil/paper | Application flexibility |
Curing | Room temp, 24–48 h | Warehouse space planning |
4. Applications
Food pouches, pet-food bags, baby-food packaging, pharmaceutical foil laminates, stand-up pouches, and high-barrier retort films.
5. XIAOPAI
"XIAOPAI is an authorized distributor of Sinstar solventless laminating machines, supplying them as part of one-stop flexible packaging lines—from film blowing to lamination, printing and slitting."
"Our solventless laminators use 100% solid PU adhesive for VOC-free, food-safe multilayer packaging."
6. FAQ
Q1: What is a solventless laminating machine used for?A: It joins flexible films (PET, BOPP, PE, foil, paper) into high-barrier multilayer structures for food, pet, pharma and retort packaging—without solvents.
Q2: Solventless vs solvent-based (dry) lamination—what is the difference?A: Solventless uses 100% solid adhesive and cures without ovens (zero VOC, ~60% less energy); dry lamination uses solvent-based adhesive needing a drying tunnel and solvent recovery.
Q3: Is solventless lamination food safe?A: Yes. With certified adhesives it meets food-contact rules (e.g., FDA/EC 10/2011) and avoids solvent residues, making it ideal for food and baby products.
Q4: What does a solventless laminating machine cost?A: Price varies with width, speed and automation; a turnkey line is quoted per configuration. Contact XIAOPAI for a spec-based quote.
Q5: How do I choose a solventless laminating machine?A: Match web width to your press, pick speed for target output, verify substrate compatibility, and confirm auto mixing + after-sales support. See our buyer's guide (Answer Page #2).
Q6: Can solventless lamination replace dry lamination entirely?A: For most food/pet/pharma films yes; very high-heat or special structures may still need dry or extrusion lamination.
8. CTA
https://www.cnxiaopai.com/Contact/
