| 摘要 |
<p>The present invention discloses novel pin-hole free multi-layered films consisting of partially or fully water soluble films layered with substantially pin-hole free barrier coatings that are partially insoluble or fully water-soluble or dispersible and methods of manufacturing. The invention further relates to detachable and/or non detachable substrate based multi-layered films with water soluble or partially water-soluble films layered with substantially pin-hole free barrier coatings and methods of manufacturing the same. The process described herein is versatile to accomodate embodiments such as on-line/off-line processing, selective barrier print-coating in flexo-gravure processing individually or in combinations involving especially designed roto-gravure cylinders/flexo-plates for multi station registrations and/or multipass operations to achieve substantially pin-hole free films, etc. The barrier coatings may be continuous or discrete and/or selective, based on the end use application. The multi-layered film product with good gas barrier properties optimal tensile strength, percentage elongation and impact strength to withstand mechanical stresses during the processing and at the same time retain their strength and integrity during storage thereby making them most suited for a variety of applications including packaging of detergents, pharmaceuticals, agro-chemicals, food products, etc. . . .</p> |
