JP2004090941A - Composite packaging bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a composite packaging bag which enables a plastic inner bag to be easily removed from a paper outer bag, and is easy to manufacture with a simple structure. <P>SOLUTION: The composite packaging bag comprises at least the plastic inner bag 1 and the paper outer bag 2 and is designed to be capable of removing the inner bag 1 filled with contents from the outer bag 2 in a packaged state that the bag is filled with the contents and has a filling port 7 sealed. A through hole passing through the outer bag 2 and the inner bag 1 is formed in the vicinity of a bottom sealed portion 9, to serve as a grip 10. The periphery of the through hole to be the grip 10 of the inner bag 1 is thermally welded. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a composite packaging bag for packaging powders, granules, liquids, and the like that require waterproofness and moistureproofness.
[0002]
[Prior art]
As a packaging bag for packaging powders, granules, liquids, etc. that require waterproofness and moisture-proofness, a paper outer bag with excellent piercing strength, friction, and workability and a plastic bag with excellent waterproofness and moisture-proofness Composite packaging bags made of bags are often used. Such a composite packaging bag is stored in a warehouse in a state in which the contents are filled and packed, and is transported to a factory such as a food company or a pharmaceutical company via transport means such as a truck, and is opened at an opening workshop, The contents are taken out. The composite packaging bag is in an environment in which the surface is easily contaminated during transportation.In particular, for foods and the like whose contents are strictly required to avoid contamination or contamination of foreign substances, the composite packaging bag adheres to the composite packaging bag. Care must be taken to remove dust and dirt.
[0003]
In recent years, as a composite packaging bag containing contents that are strictly required to avoid such contamination or foreign matter, the contents are filled and the filling port is sealed, and the contents are stored. The plastic inner bag is manufactured and used so that the plastic inner bag can be pulled out of the paper outer bag, and the plastic inner bag is pulled out of the paper outer bag and transported to the cleaned area. ing.
[0004]
As shown in FIG. 5 and FIG. 6, a composite packaging bag configured so that the plastic inner bag containing the contents can be pulled out of the paper outer bag is a plastic bag whose bottom portion 3 is sealed by heat sealing. It is composed of an inner bag 1 and a paper outer bag 2 made of kraft paper. The bottom 3 side of the plastic inner bag 1 of the paper outer bag 2 is covered with a bottom overtape 5 so as not to interfere with the bottom 3 of the plastic inner bag 2. The bottom overtape 5 is sealed and has a structure that can be cut by a cut tape 6. When the contents are filled in the composite packaging bag configured as described above, the content is heated from the top of the paper outer bag 2, and the filling port 7 of the plastic inner bag 1 on the inner side is heat-sealed and sealed. The filling port 7 side of the plastic inner bag 1 of the paper outer bag 2 is sealed and packed with a filling portion overtape 16 so as not to interfere with the plastic inner bag 1.
[0005]
When the plastic inner bag 1 containing the contents is extracted from the paper outer bag 2 of the composite packaging bag thus packaged, the bottom overtape 5 on the bottom 3 side of the plastic inner bag 1 of the paper outer bag 2 is removed. The paper outer bag 2 is cut with a cut tape 6 to open the bottom 3 side of the plastic inner bag 1 and the plastic inner bag 1 is pulled out.
[0006]
[Problems to be solved by the invention]
However, in the conventional composite packaging bag configured to be able to pull out the plastic inner bag 1 from the paper outer bag 2, the plastic inner bag 1 is pulled out from the paper outer bag 2 because of the complicated manufacturing. No means is considered at all, and therefore, it is difficult to pull out the plastic inner bag 1 from the paper outer bag 2, especially when the weight of the plastic inner bag 1 containing the contents is 10 kg to 20 kg, There has been a problem that extracting the plastic inner bag 1 from the outer paper bag 2 is an extremely difficult operation.
[0007]
SUMMARY OF THE INVENTION An object of the present invention is to provide a composite packaging bag which allows a plastic inner bag to be easily pulled out of a paper outer bag, and furthermore, has a simple structure and is easy to manufacture.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 comprises at least a plastic inner bag and a paper outer bag, and stores the contents from a packed state in which the contents are filled and the filling port is sealed. In the composite packaging bag configured to be able to pull out the plastic inner bag from the paper outer bag, a through-hole is formed near the bottom sealing portion to penetrate the paper outer bag and the plastic inner bag, and the grip is formed. The periphery of the through-hole, which serves as a gripper for the plastic inner bag, is heat-sealed.
[0009]
With this configuration, a through-hole that penetrates the outer paper bag and the plastic inner bag is formed in the vicinity of the bottom sealing portion to form a gripping port, and the periphery of the through-hole that becomes the gripping port of the plastic inner bag is thermally fused. There is no danger of the contents contained in the plastic inner bag leaking out of the gripper, and the periphery of the gripper is strengthened by heat fusion around the through-hole of the plastic inner bag, thereby exhibiting the function as the gripper. When the composite packaging bag is transported, the transporting operation can be performed by grasping the gripping opening formed through the paper outer bag and the plastic inner bag, thereby facilitating the transporting operation. Further, when extracting the plastic inner bag containing the contents from the paper outer bag, the bottom overtape of the plastic inner bag of the paper outer bag is cut with a cut tape to cut the bottom side of the plastic inner bag of the paper outer bag. By opening the bag and grasping the gripping opening formed in the plastic inner bag, the plastic inner bag can be easily pulled out of the paper outer bag. Then, the plastic inner bag extracted from the paper outer bag can be easily carried to a predetermined place by grasping the grasping opening.
[0010]
Furthermore, the composite packaging bag configured as described above forms a through hole that penetrates the paper outer bag and the plastic inner bag near the bottom sealing portion of the conventional composite packaging bag, and is formed on the paper outer bag. , And can be easily manufactured by adding a simple process such as heat-sealing the periphery of the through hole of the plastic inner bag.
[0011]
A second aspect of the present invention is characterized in that the plastic inner bag according to the first aspect is formed with a heat-sealing partitioning portion for partitioning the gripping opening and the content storage portion.
[0012]
With this configuration, the contents stored in the plastic inner bag do not enter the periphery of the gripping port by the partition portion, so that the contents can be easily and reliably removed from the plastic inner bag.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an example of an embodiment of the composite packaging bag according to the present invention will be described with reference to FIGS. FIG. 1 is a partially cutaway plan view of a composite packaging bag according to the present invention, FIG. 2 is an enlarged cross-sectional view taken along line AA of FIG. 1, and FIG. FIG. 4 is a partially cutaway plan view showing the state, and FIG. 4 is an explanatory view showing a state in which the plastic inner bag is pulled out of the paper outer bag.
[0014]
In the drawings, 1 is a plastic inner bag, and 2 is a paper outer bag constituting an outer layer of the plastic inner bag 1. The bottom part 3 of the plastic inner bag 1 is sealed by heat fusion. 4 is a bottom seal part. In the plastic inner bag 1, a low-density polyethylene film is used in this example, but the present invention is not limited to this. The paper outer bag 2 is sealed with the bottom overtape 5 so that the bottom side of the enclosed plastic bag 1 does not interfere with the bottom 3 of the plastic inner bag 1 in a state of enclosing the plastic bag 1. I have. The bottom overtape 5 has a structure that can be cut by a cut tape 6 disposed between the bottom overtape 5 and the bottom 3 of the plastic inner bag 1. The plastic inner bag 1 and the paper outer bag 2 have an adhesive force at the filling port 7 side such that the plastic inner bag 1 is easily peeled off when the plastic inner bag 1 is pulled out of the paper outer bag 2 by the adhesive 8. It is glued. Kraft paper is used for the paper outer bag 2.
[0015]
The plastic inner bag 1 and the paper outer bag 2 constituting the inner layer and the outer layer are located near the bottom sealing portion 9 and penetrate through the plastic inner bag 1 and the paper outer bag 2 in a continuous manner. Is formed to form the gripping port 10. The gripping port 10 can be easily formed by punching out the outer bag 2 with a mold blade. The periphery of the through-hole serving as the gripping port 10 of the plastic inner bag 1 is sealed by heat fusion. This seal can be easily sealed by heating the outer bag 2 from above. Reference numeral 11 denotes a grip opening seal portion.
[0016]
Further, in the present embodiment, a partitioning portion 13 for partitioning the gripping port 10 and the content accommodating portion 12 is formed in the plastic inner bag 1 by heat fusion. Reference numeral 14 denotes a partition seal forming the partition 13. A notch 15 for opening the plastic inner bag 1 is formed on a side edge of the content storage portion 12 of the plastic inner bag 1 near the grip opening seal portion 11.
[0017]
When the contents are filled in the composite packaging bag configured as described above, the content is heated from above the paper outer bag 2, and the filling port 7 of the plastic inner bag 1 inside is sealed by heat-sealing. The outer bag 2 is sealed at the filling port 7 side of the plastic inner bag 1 with the filling portion overtape 16 so as not to interfere with the plastic inner bag 1 and packed. Reference numeral 17 denotes a filling portion sealing portion.
[0018]
The composite packaging bag according to the present embodiment thus configured has the plastic inner bag 1 and the paper outer bag 2 which are the inner layer and the outer layer, and the plastic inner bag 1 and the paper A through-hole is formed through the outer bag 2 in a continuous manner to form a gripping port 10. Since the periphery of the through-hole serving as the gripping port 10 of the plastic inner bag 1 is heat-sealed, the contents accommodated in the plastic inner bag 1 are obtained. There is no danger that an object leaks from the gripper port 10, and the periphery of the gripper port 10 is strengthened by heat fusion around the through-hole of the plastic inner bag 1, and the function as the gripper port 10 is exhibited. In the transport of the paper, the gripper 10 is formed as a through-hole that penetrates the outer paper bag 2 and the inner plastic bag 1, thereby enabling the transporting operation to be facilitated.
[0019]
Further, when extracting the plastic inner bag 1 containing the contents from the paper outer bag 2, the bottom overtape 5 on the bottom 3 side of the plastic inner bag 1 of the paper outer bag 2 is cut with a cut tape 6 to cut the paper. By opening the bottom 3 side of the plastic inner bag 1 of the outer bag 2 and grasping the gripping opening 10 formed in the plastic inner bag 1, the plastic inner bag 1 is easily extracted from the paper outer bag 2. be able to. The plastic inner bag 1 pulled out from the outer paper bag 2 can be easily transported to a predetermined place by grasping the grasping opening 10.
[0020]
Further, in this example, since the partitioning portion 13 for partitioning the gripping port 10 and the content accommodating portion 12 is formed in the plastic inner bag 1 by heat fusion, the content accommodated in the plastic inner bag 1 is gripped by the partitioning portion 13. It is prevented from entering around the mouth 10 and the contents can be easily and reliably taken out from the plastic inner bag 1. Further, a notch 15 for opening the plastic inner bag 1 is formed at a side edge of the contents storage portion 12 of the plastic inner bag 1 near the partitioning portion 13, so that the plastic inner bag 1 is formed. At the time of unsealing, the notch 15 can be easily torn open.
[0021]
Further, the composite packaging bag configured as described above forms a through hole through the paper outer bag 2 and the plastic inner bag 1 in the vicinity of the bottom sealing portion of the conventional composite packaging bag. 2 can be easily manufactured by adding a simple process such as heating from above and heat-sealing the periphery of the through hole of the plastic inner bag 1.
[0022]
In addition, an intermediate layer such as a protective portion or a protective layer may be inserted between the outer paper bag and the inner plastic bag to further reinforce the grip portion.
[0023]
【The invention's effect】
As described above, according to the composite packaging bag according to the present invention, the plastic inner bag can be easily extracted from the paper outer bag, and the plastic inner bag extracted from the composite packaging bag or the paper outer bag can be easily carried. In addition, since the configuration is simple, manufacturing is easy and it can be obtained at low cost.
[Brief description of the drawings]
FIG. 1 is a partially cutaway plan view showing an example of an embodiment of a composite packaging bag according to the present invention.
FIG. 2 is an enlarged sectional view taken along line AA of FIG.
FIG. 3 is a partially cutaway plan view showing a state where contents are accommodated and packaged in the composite packaging bag shown in FIG. 1;
FIG. 4 is an explanatory diagram showing a state in which a plastic inner bag is pulled out of a paper outer bag.
FIG. 5 is a partially cutaway plan view showing a state in which contents are accommodated and packaged in a conventional composite packaging bag.
FIG. 6 is an enlarged sectional view taken along the line BB of FIG. 5;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Plastic inner bag 2 Paper outer bag 3 Bottom 4 Bottom seal part 5 Bottom overtape 6 Cut tape 7 Filling port 8 Adhesive 9 Bottom sealing part 10 Grasping port 11 Grasping port seal part 12 Contents storage part 13 Partition part 14 Partition Seal part 15 Notch 16 Filling part overtape 17 Filling part seal part

Claims (2)

At least a plastic inner bag and a paper outer bag, and from the packaging state in which the contents are filled and the filling port is sealed, the plastic inner bag containing the contents can be withdrawn from the paper outer bag. In the composite packaging bag configured as above, a through-hole that penetrates the paper outer bag and the plastic inner bag is formed in the vicinity of the bottom sealing portion to form a gripper, and around the through-hole that becomes a gripper for the plastic inner bag. A composite packaging bag, characterized by being heat-sealed. 2. The composite packaging bag according to claim 1, wherein the plastic inner bag is formed with a heat-sealing partition portion for separating the grip opening and the content storage portion. 3.

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