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SONGWON Develops Solvent-free PU Adhesives for Flexible Packaging

Published on 2018-11-28. Author : SpecialChem

TAGS:  Polyurethane Adhesives    

Did you know that the overall costs of coating a square meter of substrate with solvent free adhesives can be three times lower than those incurred with solvent based products? And that’s in addition to their environmental benefits and excellent performance. SONGWON’s latest environmentally compatible technologies are designed to give manufacturers of plastic film for packaging competitive edge and help them meet their end-use requirements.

Solvent-based v.s Solvent-free Adhesive

songwonhithane-PU
SONGWON has Developed HI-THANE Fast
Curing Adhesives for Flexible Packaging

There is more to the cost of an adhesive than just the price of conversion or of energy consumption in application. The overall coating costs of solvent free adhesives can be three times lower per square meter of substrate than those of solvent based products.

To make a realistic calculation, the Life Cycle Inventory (LCI) needs to be taken into account. This involves the quantification of energy and material inputs as well as the environmental impacts of a material or operation throughout its life cycle. The LCI shows that much less energy is consumed in the transportation of solvent free adhesives, for example, because fewer drums are shipped. This also means the converter occupies a smaller storage area and has fewer drums to handle and recycle or dispose of.

SONGWON’s Adhesives for Flexible Packaging


SONGWON has developed a range of solvent free adhesives for flexible packaging that are not only economically viable but also high performance, catering for a wide range of customer needs and
meeting today’s EHS standards. These have advantages including:
  • Fast curing
  • High bond strength within 1~2days 
  • Quicker laminate turnover

HI-THANE™ A-7332 + HI-THANE™ A-6200: These are two pack, polyurethane (PU) adhesive system meant for flexible packaging. These solvent free adhesive resins meet FDA 21 CFR 177.1390 extraction limit requirements and are stable at temperatures as low as minus 20°C. They can be used for:
  • Food pouches
  • Wet wipes
  • Film applications
  • Vacuum packing 

SONGWON’s Extensive Portfolio of PU Ink Binders


The portfolio of cutting edge HI-THANE™ PU ink binders is suitable for gravure and flexographic printing inks used in plastic film applications. The broad range enables the design of customized printing ink formulations. Surface printing applications include paper, polypropylene (PP) and polyethylene (PE) packaging for bread, rice snacks and dried food.

With their very good anti-blocking properties and high color strength, these two products are particularly recommended for retorting applications.

More products in the pipeline SONGWON is working continuously on the development of products and processes that give manufacturers of plastic film for packaging competitive edge and help them meet their end-use requirements.


Source: SONGWON
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