38results about How to "Improve adhesive properties" patented technology

The present invention provides a biodegradable multilayer film, a method for manufacturing the same, and an environmentally friendly packaging material including the same, the biodegradable multilayer film including a base layer and a biodegradable resin layer, wherein the biodegradable resin layer includes a polyhydroxyalkanoate (PHA) resin, and the biodegradable resin layer has a heat bonding strength of 0.5 kgf / 15 mm to 15 kgf / 15 mm, a water permeability of 3 g / m2·atm·day or less, and an oxygen permeability of 10 cc / m2·atm·day or less. The biodegradable multilayer film can be biodegradable under natural conditions such as soil and the ocean, can improve barrier properties against moisture and oxygen without including aluminum or nylon materials, and can further improve adhesion properties. Accordingly, the biodegradable multilayer film can be used as a packaging material in various fields, thereby providing a high-quality and environmentally friendly packaging material.