| 摘要 |
A method for simultaneously combining and embossing biodegradable resin sheets is provided to prevent interlayer delamination or bubbles as well as damage to an emboss. A method for simultaneously combining and embossing biodegradable resin sheets comprises a step of combining a first biodegradable resin sheet(1) with an acryl resin sheet(2) or a second biodegradable resin sheet(1݆) by allowing the sheets to pass through drum rollers having surface temperature of 40°C to 150°C while an upper heater applies radiant heat of 40°C to 100°C to the sheets. The biodegradable resin sheet is made of, PLA(Poly Lactic Acid), PGA(Poly Glycolic Acid), PCL(Poly Caprolactone), fatty polyester resin, PHB(Poly Hydroxyl Butyric Acid) or D-3-hydroxy butyric acid. A mixture, which is obtained by adding aziridine of 5wt% to 40wt% to hydrogenous ink having no well-known pigment, is coated on a third biodegradable resin sheet(1") to form a primer layer.
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