PLASTIC BAG MAKING APPARATUS

• US 20150005148A1
• Filed: 11/16/2012
• Published: 01/01/2015
• Est. Priority Date: 02/08/2012
• Status: Active Grant

• Current Assignee: Fuji SEAL International Incorporated, Totani Corporation
• Original Assignee: Fuji SEAL International Incorporated, Totani Corporation
• Inventors: Totani, Mikio, Nagata, Hiroshi, Ohmae, Hideki, Hashimoto, Masakazu
• Granted Patent: US 9,932,161 B2
• Time in Patent Office: Days
• US Class Current: 493/194
• CPC Class Codes: B31B 2155/00 Flexible containers made from webs
• CPC Class Codes: B31B 2155/001 by folding webs longitudinally
• CPC Class Codes: B31B 2155/0014 having their openings facing transversally to the direction of movement
• CPC Class Codes: B31B 2155/002 by joining superimposed webs, e.g. with separate bottom webs
• CPC Class Codes: B31B 2160/20 with structural provision for thickness of contents
• CPC Class Codes: B31B 70/844 Applying rigid valves, spouts, or filling tubes
• CPC Class Codes: B65D 75/008 Standing pouches, i.e. "Standbeutel"
• CPC Class Codes: B65D 75/5877 connected to a planar surface of the package wall

Abstract

An apparatus is improved to successively make plastic bags each of which includes an end surface provided with a spout, by employing the general feeding way of panel material, to be simple in structure, low in cost, high in speed and to make it possible to successively make the plastic bags two by two. A first folded portion is formed in a first web of panel material 1. An aperture is formed in a second web of panel material 2. A spout is inserted into the aperture, the spout and the second web of panel material 2 being heat sealed with each other. The second web of panel material 2 is guided by a guide device 18 to be folded after being heat sealed so that a second folded portion should be formed in the second web of panel material. The spout is turned over by the second folded portion. The second folded portion and the first folded portion are heat sealed with each other while the second folded portion and the second web of panel material 2 are heat sealed with each other about the spout.

Claims

1. An apparatus for successively making plastic bags each of which includes an end surface provided with a spout, the apparatus comprising:

a feeding device by which first and second webs of panel material are disposed along a horizontal plane and fed longitudinally thereof and intermittently, the first web of panel material being previously folded along a first longitudinal folded line extending adjacent to one side edge so that a first folded portion should be formed in the first web of panel material, the second web of panel material being then superposed with the first web of panel material on opposite side to the first folded portion to have one side edge protruding beyond the first longitudinal folded line at a distance;

an aperture forming device by which an aperture is formed in the second web of panel material at a position between the one side edge of the second web of panel material and the first longitudinal folded line when the first and second webs of panel material are stopped temporarily;

a spout inserting device by which a spout is inserted into the aperture;

a spout seal device by which the spout and the second web of panel material are heat sealed with each other when the first and second webs of panel material are stopped temporarily;

a guide device by which the second web of panel material is guided to be folded along a second longitudinal folded line extending between the spout and the first longitudinal folded line when the first and second webs of panel material are fed after the spout and the second web of panel material are heat sealed so that a second folded portion should be formed in the second web of panel material, the spout being turned over by the second folded portion, the second folded portion being superposed with the first folded portion; and

a circumferential seal device by which the second folded portion and the first folded portion are heat sealed with each other while the second folded portion and the second web of panel material are heat sealed with each other about the spout when the first and second webs of panel material are stopped temporarily,

the end surface being formed by the second folded portion to be provided with the spout.

2. The apparatus as set forth in claim 1 wherein the spout is positioned on the first longitudinal folded line when the second folded portion is superposed with the first folded portion.

3. The apparatus as set forth in claim 1 further comprising:

an end surface material supply mechanism from which a web of end surface material is supplied to extend longitudinally of the first and second webs of panel material, the web of end surface material being inserted between the first and second webs of panel material;

a longitudinal seal device by which the first and second webs of panel material and the web of end surface material are heat sealed with each other longitudinally of the first and second webs of panel material when the first and second webs of panel material are stopped temporarily;

a cross seal device by which the first and second webs of panel material are heat sealed with each other widthwise thereof when being stopped temporarily; and

a cross cutter by which the first and second webs of panel material are cut widthwise thereof when being stopped temporarily,

the plastic bag including opposite end surfaces one of which is provided with the spout, the other end surface being formed by the web of end surface material.

4. The apparatus as set forth in claim 1 further comprising;

an end surface material supply mechanism from which a web of end surface material is supplied to extend longitudinally of the first and second webs of panel material, the web of end surface material being inserted between the first and second webs of panel material;

a longitudinal seal device by which the first and second webs of panel material and the web of end surface material are heat sealed with each other longitudinally of the first and second webs of panel material when the first and second webs of panel material are stopped temporarily;

a cross seal device by which the first and second webs of panel material are heat sealed with each other widthwise thereof when being stopped temporarily; and

a cut out device by which the plastic bag is cut out of the first and second webs of panel material when the first and second webs of panel material are stopped temporarily,

the plastic bag including opposite end surfaces one of which is provided with the spout, the other end surface being formed by the web of end surface material.

5. The apparatus as set forth in claim 1 further comprising:

the first web of panel material being previously folded along first longitudinal folded lines extending adjacent to opposite side edges so that first folded portions should be formed in the first web of panel material, the second web of panel material being then superposed with the first web of panel material on opposite side to the first folded portions to have opposite side edges protruding beyond the opposite side edges of the first web of panel material at a distance;

the aperture forming device by which apertures are formed in the second web of panel material at positions between the opposite side edges of the second web of panel material and the first longitudinal folded lines when the first and second webs of panel material are stopped temporarily;

the spout inserting device by which spouts are inserted into the apertures;

the spout seal device by which the spouts and the second web of panel material are heat sealed with each other when the first and second webs of panel material are stopped temporarily;

the guide device by which the second web of panel material is guided to be folded along second longitudinal folded lines extending between the spouts and the first longitudinal folded lines when the first and second webs of panel material are fed after the spouts and the second web of panel material are heat sealed so that second folded portions should be formed in the second web of panel material, the spouts being turned over by the second folded portions, the second folded portions being superposed with the first folded portions; and

the circumferential seal device by which the second folded portions and the first folded portions are heat sealed with each other while the second folded portions and the second web of panel material are heat sealed with each other about the spouts when the first and second webs of panel material are stopped temporarily.

6. The apparatus as set forth in claim 1 further comprising:

the first and second webs of panel material being superposed with each other, the first web of panel material having one side edge protruding beyond one side edge of the second web of panel material at a distance;

the aperture forming device by which an aperture is formed in the first web of panel material at a position between the one side edges of the first and second webs of panel material when the first and second webs of panel material are stopped temporarily;

the spout inserting device by which a spout is inserted into the aperture;

the spout seal device by which the spout and the first web of panel material are heat sealed with each other when the first and second webs of panel material are stopped temporarily;

the guide device by which the first web of panel material is guided to be folded and folded back along a longitudinal folded line and a longitudinal folded back line extending at positions predetermined widthwise of the first web of panel material when the first and second webs of panel material are fed after the spout and the first web of panel material are heat sealed so that a folded portion and a folded back portion should be formed in the first web of panel material, the spout and the longitudinal folded line being positioned between the one side edge of the first web of panel material and the longitudinal folded back line and positioned between the one side edge of the second web of panel material and the longitudinal folded back line; and

the circumferential seal device by which the folded portion and the folded back portion are heat sealed with each other while the folded back portion and the second web of panel material are heat sealed with each other about the spout when the first and second webs of panel material are stopped temporarily,

the end surface being formed by the folded back portion to be provided with the spout.

7. An apparatus for successively making plastic bags each of which includes an end surface provided with a spout, the apparatus comprising:

a feeding device by which a wide web of panel material is fed longitudinally thereof and intermittently;

an aperture forming device by which an aperture is formed in the wide web of panel material at a position predetermined widthwise of the wide web of panel material when the wide web of panel material is stopped temporarily;

a spout inserting device by which a spout is inserted into the aperture;

a spout seal device by which the spout and the wide web of panel material are heat sealed with each other when the wide web of panel material is stopped temporarily;

a guide device by which the wide web of panel material is guided to be folded and folded back along a first longitudinal folded line and a longitudinal folded back line extending between one side edge and the spout when the wide web of panel material is fed after the spout and the wide web of panel material are heat sealed so that a first folded portion and a folded back portion should be formed in the wide web of panel material, the wide web of panel material being folded along a second longitudinal folded line extending at a position predetermined widthwise of the wide web of panel material so that a second folded portion should be formed in the wide web of panel material, the spout being turned over by the second folded portion, the spout and the folded back line being positioned between the first and second longitudinal folded lines; and

a circumferential seal device by which the second folded portion and the first folded portion are heat sealed with each other while the second folded portion and the wide web of panel material are heat sealed with each other about the spout when the wide web of panel material is stopped temporarily,

the end surface being formed by the second folded portion to be provided with the spout.

8. An apparatus for successively making plastic bags each of which includes an end surface provided with a spout, the apparatus comprising:

a feeding device by which first and second webs of panel material are disposed along a horizontal plane and fed longitudinally thereof and intermittently, the first web of panel material being previously folded along a longitudinal folded line extending adjacent to one side edge so that a folded portion should be formed in the first web of panel material, the second web of panel material being then superposed with the first web of panel material on opposite side to the folded portion to have one side edge protruding beyond the longitudinal folded line at a distance;

an end surface material supply mechanism by which a web of end surface material is supplied to the first and second webs of panel material to extend along the longitudinal folded line so that the web of end surface material should be superposed with the folded portion and the second web of panel material, the web of end surface material including apertures formed therein and spaced from each other longitudinally of the web of end surface material, the web of end surface material further including spouts inserted into the apertures, the spouts and the web of end surface material being heat sealed with each other; and

a circumferential seal device by which the web of end surface material and the folded portion are heat sealed with each other while the web of end surface material and the second web of panel material are heat sealed with each other about the spout when the first and second webs of panel material are stopped temporarily,

the end surface being formed by the web of end surface material to be provided with the spout.