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Seeking Moisture Barrier For Bio-Based Films





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Contract to research and identify European industrial technologies of high cooperation and business potential for Japan.

Japan Technology Group as member of the International Consortium has been awarded a contract to research and identify European industrial technologies of high cooperation and business potential for Japan. Click to see full details...


TECHNOLOGY VENTURING SERVICES, S.L.U ( everis Group, subsidiary of the NTT Data Group)

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“JTG has proven to be very dependable and as advertised, they are extremely well connected to the research community in Japan.  Their core expertise and approach to doing business are in alignment with our objectives.  As a result, we have been able to establish several strategic relationships and collaboration opportunities.”

University of Hawai‘i
Larry Cutshaw
Director Business Development, Office of the Vice President for Research and Innovation


Respond, Apply or Request more info

Desired Outcome:

We have been working on bio-based/biodegradable flexible films for food packaging to help

achieve our sustainability goals of having 100% RCB compliance for our packages as well as

20% reduction in GHG by 2030.

While flexible package is a very sustainable option from a material use point of view, the multilayer

multi-material structures are not conducive for recycling and mostly end up in the landfill or

as litter. While the biodegradable films help us with the end of life issues by designing for

managed waste infrastructures like composting and anaerobic digestion, it cannot be at the

expense of performance compromises such as reduced shelf stability.

Oxygen barrier is not a problem with these films but achieving the very high moisture barrier

required for packaging dry foods (< 0.3 g/m2/day under tropical conditions of 38C/90% RH) has

been a challenge. We understand that metallization will be needed to achieve the high moisture

barrier requirements, but even with metallization we have not been able to reach this barrier with

bio-based films. Also, it is important to maintain this barrier under forming conditions in the VFFS

process of bag-making.

We are looking for novel resins that can be co-extruded with our core resins to form a skin layer

with high functionality that can anchor metal to film or highly functional coatings which would

serve the same purpose. Inherently high barrier coatings that can be applied as primer coating or

top coating over metal could also be a solution.

Solution Requirements:


• Barrier skin resins should be co-extrudable with PLA/PHA resin in blown film or cast film

processing conditions

• The barrier skin layer should have good adhesion to core layer, or a suitable tie layer needs to

be identified

• The barrier resin should be biodegradable under home composting conditions at a minimum

• If barrier or metallization primer coating, it should be applicable on to our film by commercially

available roll coating processes

• Possible to metallize on top of skin layer or coating


• The ideal solution would have all the Must Haves and all the Nice to Haves. Of the multiple

technologies that meet all the Must Haves (minimum requirement) the one that meets the most

Nice-to-Haves may be the best. Based on weighting factors the Nice to Have factors could be

used to prioritize similar solutions.

• The skin layer option is preferable as it enables avoiding a unit operation in the conversion


• Identification of barrier options (both skin or coating) which could help avoid metallization

would be ideal (stretch goal)

• Solvent-free coating technology is ideal from a GHG point of view but willing to try both waterbased

and even solvent-based technologies

• Recent advances in metallization with other metals like silicon etc. are welcome

Past Work And “Out Of Scope” List:

• Solvent cast film technologies would not be commercially available

• PGA, G-polymer as skin resins

• Nano-cellulose, nano-clay coatings but recent advances are welcome

• Preferred Collaboration Types

We are open to the following types of engagement:

sponsored research for development and proof of concept testing, consultation, licensing

existing technology for PEP to apply, purchase commercial ready solution, open to any,





or E-mail us at info@japantechnologygroup.com. 
Please specify which technology need(s) you are responding to.

No cost for submitting a proposal

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  •  Support and facilitate direct communication with the technology seekers
  •  Assist and guide preparing a effective proposal and materials
  •  Consult strategic planning for negotiations for licensing or collaboration
  •  Act as your representative though out process to conclusions
  •  Provide necessary legal advices and supports based on your needs
Questions and inquiries concerning our services

Tel: +81-3-6825-1418

E-mail: info@japantechnologygroup.com