SHEET MANUFACTURING METHOD HAVING AIR CHANEL USING EXTRUSION LAMINATION AND VACUUM VINYL PACK THEREOF

摘要

PURPOSE: A method for manufacturing a sheet having an air channel using extrusion lamination and a vacuum packing bag manufactured using the method are provided to secure enough air passages in a vacuum packing bag by forming a double air channel. CONSTITUTION: A method for manufacturing a sheet having an air channel using extrusion lamination is as follows. A polyamide film(111a), LLDPE(Linear Low Density Polyethylene)(112a), and LDPE(Low Density Polyethylene) are molten, extruded, and laminated so that an air channel is formed during the manufacture of a vacuum packing bag. The polyamide film on which advertisement is printed is drawn into a pressure roller(115) from a first feed roller(111). The LLDPE is drawn into a pattern roller(116) from a second feed roller(112). The LDPE is melted and extruded between the polyamide film and the LLDPE. The pattern roller has diagonal patterns of regular intervals to alternately form intaglio and relief on the sheet.