JPH08324589A - Sealed bag - Google Patents

Abstract

PURPOSE: To enable one to unseal a bag in a straight line so that the contents can be taken out always in a favorable manner by folding over, in forming the bag, a plastic film along a selected, substantially horizontally orientated part in a manner of having the orientation of the front and back sides of the plastic film substantially in the same direction and then effecting thermal fusion adhesion. CONSTITUTION: To form a sealed bag 5, along a part C centered breadthways in a bag material with an arc-forming orientation the bag material is folded over and with the orientation 2a of the front side substantially in the same direction as and in agreement with the orientation 2b of the back side the front and back sides are provided with thermal fusion adhesion at horizontal thermal adhesion parts 3 and a vertical thermal adhesion part 4. As a result, when the sealed bag 5 is unsealed, the bag is torn from one notch in the vertical thermal adhesion part 4 in the direction of the orientation 2a, 2b of the film 1. Since the direction 6 in which the front side is torn is substantially the sanae as the direction 7 of the tearing of the back side, the sealed bag 5 is torn substantially in a straight line and the contents can be taken out always in a favorable manner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention tears a sealing bag formed of a plastic film having an arcuate orientation from the edge of the heat-sealed portion to either the front side or the other side when opening. However, the present invention relates to a sealed bag that can be torn in a substantially straight line.

[0002]

2. Description of the Related Art As shown in FIG. 4, a plastic film 1 having an arcuate orientation 2 is used as a raw material, and the plastic film 1 is folded into two and overlapped with each other. Then, a sealed bag in which the contents are taken out by tearing from the edge of the heat-sealed portion in the orientation direction of the film to open the bag is well known. The orientation 2 of the plastic film 1 which is the raw material of this sealing bag is different from each other in each partition part range if the width L of the plastic film 1 is partitioned in the length (longitudinal) direction by A to E. Have And
When manufacturing a sealed bag from the plastic film 1, it is the current situation that the orientation is not taken into consideration and the material is taken.

[0003]

Therefore, in the sealed bag manufactured as described above, the material is randomly taken without considering the orientation 2 of the plastic film 1 as the raw material. , When tearing the finished sealed bag from the edge of the heat-sealed part in the orientation direction of the film to open it, and taking out the contents, the orientations 2 on the front and back of the bag are uneven and disjointed. As for the tearing direction, the upper and lower ones were slanted along the orientation, respectively, and were torn in different directions, so that the contents could not be opened straight and the contents could not be taken out stably.

The present invention has been made in order to solve the above-mentioned problems, and when manufacturing a sealed bag from the plastic film 1, the orientation 2 is taken into consideration when the material is taken, so that the bag is opened. An object of the present invention is to provide a sealed bag in which a film tears in a straight line and is opened straight so that the contents can be stably taken out.

[0005]

In order to achieve the above-mentioned object, the present invention is to bend a plastic film having an arcuate orientation in two in the direction of orientation and stack them, and heat the open edge of the plastic film. In order to form a sealed bag, the sealed bag is torn by opening in the orientation direction of the film from the edge of the heat-sealed portion to open the bag, and by selecting the nearly horizontal portion of the orientation, two plastic films are selected. It is characterized in that the film is heat-welded so that the orientations of the front and back sides of the film overlap in substantially the same direction when bent, to form a bag.

[0006]

With the above construction, the sealed bag of the present invention is heat-welded so that the orientations of the front and back sides of the film when the plastic film, which is the raw material, is folded in two are superposed in a substantially horizontal direction. By forming it, when tearing in the orientation direction of the film from the edge of the heat-sealed portion to open it, the film is torn in a substantially straight line and the contents can be stably taken out.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the drawings. In FIG. 1, (a) is a plastic film 1 having an arcuate orientation 2 shown in FIG. C which is the central portion in the width direction
Select the part of, and fold this in two and stack it,
As shown in (b) and (c), the open edges are heat-welded at the horizontal heat-bonding portions 3 and 3 and the vertical heat-bonding portion 4 to form a sealed bag (mini pack) 5. Soy sauce, sauce, mayonnaise, etc. are enclosed in the sealed bag 5.

The sealing bag 5 is a plastic film 1
The front and back orientations 2a and 2b are heat-welded in the horizontal heat-welding portions 3 and 3 and the vertical heat-welding portion 4 in a state where the orientations 2a and 2b overlap each other in substantially the same direction. Therefore, when the sealing bag 5 is opened, it is torn from the I notch or V notch formed in the vertical heat-bonding portion 4 in the orientations 2a and 2b directions of the film 1, and the tearing direction is the front side. The tearing direction 6 and the tearing direction 7 on the back side are substantially the same, and the sealing bag 5 is torn in a substantially straight line. As a result, the contents can be stably taken out without scattering or spilling.

As shown in FIG. 1 (b), the operation of opening the sealing bag 5 is performed by the I notch formed in the vertical heat-bonding portion 4,
Alternatively, when the opening direction from the V notch is torn along the orientations 2a and 2b so that the upper part is pulled toward the front in the drawing, or as shown in (c), the opening direction from the vertical heat-bonding portion 4 Orientation 2 so that the lower part of the drawing is pulled toward you
In either case of tearing in the directions a and 2b, the sealing bag 5 is torn in a substantially straight line, so that the contents can be stably taken out.

On the other hand, as shown in FIG.
The orientation 2 of the plastic film 1 as the raw material is taken from the portion A in FIG. 4 and is folded into two.
As shown in (b) and (c), when the open edge is heat-welded in the horizontal heat-bonding parts 3, 3 and the vertical heat-bonding part 4 to form the sealed bag 5, the front and back sides The orientations 2a and 2b intersect diagonally.

Therefore, the sealing bag 5 is provided with a film orientation 2
When tearing in the a and 2b directions to open the bag, the front side tearing direction 6 and the back side tearing direction 7 obliquely intersect each other, so that the sealing bag 5 is as shown in (b) and (c). However, it cannot be opened straight because it is torn obliquely along the respective orientations and in different directions, and the contents cannot be ejected stably because the contents are scattered or spilled.

In addition, as shown in FIG. 3A, the orientation 2 of the plastic film 1 as a raw material is taken from the portion E in FIG. 4 and folded in half, and its open edge is
As shown in (b) and (c), the sealing bag 5 is formed by heat-sealing the horizontal heat-bonding parts 3, 3 and the vertical heat-bonding parts 4. Also in this case, as in the case of FIG. 2, the orientations 2a and 2b on the front and back sides obliquely intersect. When the sealing bag 5 is torn and opened in the film orientations 2a and 2b, the front side tearing direction 6 and the back side tearing direction 7 intersect at an angle, so that the sealing bag 5 is (b). As shown in (c) and (c), it can not be opened straight because it is torn obliquely along the respective orientations and in different directions, and the contents are scattered or spilled and can be taken out stably. It will disappear.

[0013]

As described above, according to the hermetically sealed bag of the present invention, a plastic film having an arcuate orientation is selected to have a nearly horizontal orientation, and the plastic film is folded in two. When the film was heat-sealed so that the orientations of the front and back of the film overlap in almost the same direction to form a sealed bag, when tearing from the edge of the heat-sealed part in the orientation direction of the film and opening, It can be torn straight and the contents can be taken out stably without spilling. Further, tearing can be performed smoothly and opening can be performed with a small force.

[Brief description of drawings]

FIG. 1 (a) is a view of manufacturing a sealed bag according to the present invention,
FIG. 4 is a perspective view showing a state in which the plastic film material C is taken from the portion C and folded in half. (B) is a heat-welded state from (a) to form a sealed bag. A perspective view of a state of tearing and opening in an orientation direction,
(C) is a perspective view of a state in which the tearing direction at the time of tearing the sealing bag in the orientation direction of the film to open the bag is opposite.

FIG. 2 (a) is a view for manufacturing a sealed bag other than the present invention,
FIG. 4 is a perspective view of the plastic film material taken from the portion A and folded in half, (b) is a heat-welded state from (a) to form a sealed bag, A perspective view of a state of tearing and opening in an orientation direction,
(C) is a perspective view of a state in which the tearing direction at the time of tearing the sealing bag in the orientation direction of the film to open the bag is opposite.

FIG. 3 (a) is a view for manufacturing a sealed bag other than the present invention,
FIG. 4 is a perspective view of the plastic film material obtained by removing the material from the E portion and folding the plastic film material in half. FIG. A perspective view of a state of tearing and opening in an orientation direction,
(C) is a perspective view of a state in which the tearing direction at the time of tearing the sealing bag in the orientation direction of the film to open the bag is opposite.

FIG. 4 is a partial plan view of a plastic film having an arcuate orientation as a raw material for a sealed bag.

[Explanation of symbols]

 1 Plastic film 2 Orientation 2a Orientation on the front side 2b Orientation on the back side 3 Horizontal heat-bonding part 4 Vertical heat-bonding part 5 Sealing bag (mini pack) 6 Tear direction on the front side 7 Tear direction on the back side

Claims (1)

[Claims] 1. A plastic film having an arcuate orientation is folded in two in the direction of orientation and stacked, and its open edge is heat-welded to form a sealed bag. In a sealed bag that is torn and opened in the orientation direction of the film, when the plastic film is folded in two by selecting a portion near the horizontal orientation described above, the orientations of the front and back films are almost the same. A hermetically sealed bag, characterized in that it is heat-welded so that it overlaps with the above to form a bag.