Abstract: The present invention relates to a portable vacuum packaging machine which, other than a conventional vacuum packaging machine composed of a bulky and weighty single component element, is configured in such a way as to be divided into a body section and a head section, whereby a vacuum packaging work can be conveniently implemented using the head section without requiring movement of the body section, irrespective of place so long as a flat condition is satisfied.

Abstract: Disclosed is a method for preparing an air channel-equipped film for use in vacuum packages, which comprises the step of providing a gas-impermeable base, along with a melt-extruded heat-sealable resin, to a laminating unit consisting of a laminating roll and a cooling roll, to form a heat-sealable resin layer on the gas-impermeable base, characterized in that the heat-sealable resin is molded and quenched in such a way that a plurality of protrusions, corresponding to a plurality of grooves formed in a predetermined pattern on the circumferential surface of the cooling roll, are formed on the molded heat-sealable resin layer, defining channels for the evacuation of air therebetween. The method is simple because of its ability to form air channels without the aid of additional embossing techniques, as well as being economically favorable owing to the employment of no embossing molds.