Packaging Machine

Abstract

A packaging machine includes a pair of grips holding vicinities of two sides of a bag mouth of a packaging bag, a moving body to intermittently moving the paired grips every one of a plurality of packaging steps, and a paper packaging bag sealing device provided in a section where a sealing step is carried out, for sealing a paper packaging bag to which a sealing adhesive agent has been applied.

What is claimed is: 
     
         1 . A packaging machine comprising:
 a pair of grips holding vicinities of two sides of a bag mouth of a packaging bag;   a moving body to intermittently moving the paired grips every one of a plurality of packaging steps; and   a paper packaging bag sealing device provided in a section where a sealing step is carried out, for sealing a paper packaging bag to which a sealing adhesive agent has been applied.   
     
     
         2 . The packaging machine according to  claim 1 , further comprising a resin packaging bag sealing device provided in the section where the sealing step is carried out, for sealing a resin packaging bag and a reciprocating member which reciprocates the paper packaging bag sealing device or the resin packaging bag sealing device. 
     
     
         3 . The packaging machine according to  claim 1 , wherein the paper packaging bag sealing device includes a heater melting the sealing adhesive agent of the paper packaging bag. 
     
     
         4 . The packaging machine according to  claim 3 , wherein the heater has a hot air supply block disposed near the first fold guide. 
     
     
         5 . The packaging machine according to  claim 1 , wherein the paper packaging bag sealing device includes a fold guide folding a vicinity of the bag mouth of the paper packaging bag along a widthwise direction. 
     
     
         6 . The packaging machine according to  claim 5 , wherein the fold guide includes a first fold guide folding a folded part of the paper packaging bag in a direction substantially perpendicular to a lengthwise direction and a second fold guide folding the folded part folded by the first fold guide in the direction substantially perpendicular to the lengthwise direction, in a direction horizontal to the lengthwise direction. 
     
     
         7 . The packaging machine according to  claim 1 , further comprising a pair of clamping parts provided in a section where a sealing step is carried out, the clamping parts clamping the paper packaging bag from a surface and a back thereof respectively thereby to form a fold line, wherein one of the clamping parts has a fold line forming protrusion and the other clamping part has a fold line forming recessed streak brought into mesh engagement with the protrusion. 
     
     
         8 . The packaging machine according to  claim 1 , wherein the paper packaging bag sealing device has a pair of clamping bodies configured to clamp the paper packaging bag from a surface and a back thereof respectively thereby to press the surface and the back of the paper packaging bag against each other. 
     
     
         9 . The packaging machine according to  claim 8 , wherein the paired clamping bodies comprise a pair of pressing rollers. 
     
     
         10 . The packaging machine according to  claim 1 , wherein a step of sealing the paper packaging bag includes a step of forming a fold line on the paper packaging bag, a step of melting the sealing adhesive agent for the paper packaging bag, a step of widthwise folding a vicinity of the bag mouth of the paper packaging bag and a step of clamping the paper packaging bag from a surface and a back thereof, thereby pressure bonding the paper packaging bag.