Patent ID: 8579779
Filing Date: 2013-11-12
Classification: B31B,B65D

Abstract:
1. An apparatus for successively making plastic bags each of which includes panel portions, side gusset portions and a bottom gusset portion, the apparatus comprising: panel portions forming means by which two webs of panel material are opposed to and superposed on each other and fed longitudinally thereof, the panel portions being formed by the webs of panel material; side gusset portions forming means by which sheets of side gusset material are folded into halves and combined with and interposed between the webs of panel material to extend widthwise thereof, the side gusset portions being formed by the sheets of side gusset material; and bottom gusset portion forming means by which a web of bottom gusset material is combined with the webs of panel material to extend longitudinally thereof, so that the bottom gusset portion is formed by the web of bottom gusset material, and at least one bottom protrusion is formed by one of the webs of panel material and the web of bottom gusset material extending beyond and protruding from the bottom gusset portion when the webs of panel material are fed longitudinally thereof, the apparatus being arranged to make the bottom protrusion provided with a handle hole, zipper, opening or adhesive means.