JP2847691B2 - Packaging bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for easily increasing the height of a packaging bag.
The present invention relates to a packaging bag sealed so that it can be quickly degassed .

[0002]

2. Description of the Related Art Conventional vacuum degassing packaging is disclosed in
The one disclosed in JP-A-1-40291 accommodates a packaging bag in which a bag opening is temporarily sealed so that the contents are not exposed, in a vacuum chamber, and evacuates the chamber to a vacuum state.
The packaging bag is shaped and completely sealed in a vacuum. In this vacuum degassing packaging, it is necessary to seal the bag mouth in two steps, which causes a reduction in processing capacity. In addition, the vacuum degassing process was expensive and complicated as a whole, such as providing a sealing machine in a vacuum chamber for vacuum degassing.

The applicant of the present invention aims to solve the above-mentioned disadvantages of the prior art, and in Japanese Patent Application No. 2-406298,
A packaging bag sealed in a zigzag shape or a maze shape so as to have a minute gap that connects the bag mouth of the packaging bag filled with the contents to the inside and outside of the packaging bag is vacuum-evacuated in a vacuum chamber. This device did not require any special device or process together with the packaging device and the vacuum degassing device, and made it possible to perform vacuum degassing and shaping without reducing the capacity. In short, the zigzag or labyrinth-sealed packaging bag is put into a vacuum deaerator, and pressed into the packaging bag while deaerated from the minute gap of the bag mouth in the vacuum chamber of the vacuum deaerator. The shaping is performed by adding vibration.

[0004] Such vacuum degassing and shaping is performed when the vacuum pressure in the vacuum degassed and shaped packaging bag is high, that is, when the vacuum pressure in the vacuum chamber is high, the packaging bag product is hard and clean. Become. In addition, the time is short. However, recently, there are many customers who desire only the shaping, and the shaping has been performed, but the shaping and wrapping bag which has a low vacuum pressure in the wrapping bag and has some flexibility has been demanded. The vacuum degassing and shaping bag according to the disclosure of the present applicant is reliably formed by vacuum degassing at a high speed when the vacuum pressure is high because the gas is degassed from the minute gap communicating with the inside and outside of the packaging bag. Has a low vacuum pressure, for example, -100 mmH
becomes the g or less, not only it takes time to vacuum degassing shaping, or variations occur in the vacuum degassing, when the set even lower vacuum pressure in the vacuum chamber have occurred even if the vacuum shaping difficult.

[0005] Here, the vacuum chamber shown in Figs.
A conventional example of degassing when used is described. Fill contents
To communicate the opening 11 of the packaging bag 10 inside and outside the packaging bag
Packaging bag with two linear seals with gap 1
At 10, the packaging bag 10 is put into a vacuum chamber.
And then increase the vacuum pressure, the inside of the vacuum chamber and the packaging bag
Due to the pressure difference inside the packaging bag 10, the packaging bag 10 is greatly inflated.
You. At this time, the minute gap 1 communicating with the inside and outside of the packaging bag 10
Inflates as well. Small gap due to linear seal
1 also has a linear shape.
Accordingly, the minute gap 1 expands into a tunnel-like air passage 7. This
The small gap 1 becomes an air passage 7 as shown in FIG.
The inside of the packaging bag 8 and the package are packed so that air can be released outside the packaging bag 4.
The outside 4 of the packaging is connected to the gap 2 or 3 (non-seal
Section).

[0006] However, packaging with a straight seal
Because it is applied in the width direction of the bag 10, it changes from the minute gap 1.
The tunnel-shaped air passage 7 extends in the width direction of the packaging bag 10.
And the air in the packaging bag 8 is
From the gaps 2 and 3 of the linear seal through the air passage 7
It is released outside the wrapping paper 4 into the vacuum chamber.
When viewed from the air path 7, the air gaps 2 and 3 release air in a substantially right angle direction.
Must be issued. That is, the small gap 1
The channel 7 is perpendicular to the direction in which air is released.
Direction, and the tunnel-shaped air passage 7
A cut made along the length of this pipe
During the period 3), the air inside the packaging bag 8 is released. One
The greater the pressure difference between the inside and outside
To make the shape of the air passage 7 more clear,
The cut (cut 3) in the length direction of the air passage 7 is ton
It is difficult to degas because it is closed by the flannel-shaped air passage 7
It will be difficult.

However, if the vacuum pressure in the vacuum chamber is high,
Even if the gap 3 is closed, it takes time but the package
It is possible to forcibly degas the atmosphere inside. Vacuum chamber
This is possible with degassing using a
Degassing by simply pressing the packaging bag without using an empty chamber
A reduction in the work efficiency will be time-consuming in the case of
Will be invited.

As described above, using a vacuum chamber
If the vacuum pressure inside the vacuum chamber is high,
It is. Also, the packaging bag 10 after vacuum degassing and shaping has a high vacuum pressure.
The vacuum pressure in the packaging bag 8 is also high due to deaeration in
It is an odd-shaped plastic packaging bag.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to solve the following problems of the prior art, and to provide the same as the sealing of a packaging bag.
Sometimes the air contained in the packaging bag is easily wrapped with a small differential pressure.
Packaging with a seal that allows it to be discharged outside the packaging
The goal is to provide bags, for example, by expanding the permissible range of vacuum pressure in the vacuum chamber, not only to enable a wide range of products from hard plastic bags to soft plastic bags, but also to reduce the time required for vacuum degassing packaging. It is going to be greatly shortened.

[0010]

The present invention solves the above-mentioned problems.
In order to form a minute gap communicating with the inside and outside by filling and packaging the contents by the packaging device, two intermittent straight lines having non-sealing portions at different positions from the inner position and the outer position of the packaging bag. Jo of sheet - a packaging bag Le is made, the outer sheet - non Le sheet - inward at a position opposed to the Le portions sheet - le of sheet - one outer sheet with Le portions are arranged -
Non-sealing of multiple inner seals to non-sealing portion of the seal
Part of the two linear seals
The seal of the inner seal facing the non-seal part of the outer seal
Is the air passage formed between the two linear seals?
From the outside to the air passage of the outer non-sealing part.
From the seal portion to the non-seal portion of the outer seal
The packaging bag was provided with a convex seal portion extending toward it.

Further, according to the present invention, the contents are filled by the packaging device.
Packing to form a minute gap that communicates inside and outside
The non-seal in different positions on the inside and outside of the bag
-Two intermittent linear seals with a sealing part
Packaging, wherein the inner seal has a plurality of non- sealed portions, and the outer seal has a single non- sealed portion larger than the non- sealed portion of the inner seal. And two linear sheets
Inner seal for the non-sealed part of the outer seal of the seal
Is formed by the space formed between the two linear seals.
Air flowing from the air passage to the air passage of the outer non-sealed portion
From the seal of the inner seal to the outer seal, which holds the road
The packaging bag provided with a convex seal portion extending toward the non-sealing portion .

[0012]

In general, the seal of the bag mouth of the packaging bag is almost always linearly sealed in the width direction of the bag mouth. This is because even if a seal with a shape other than a straight line such as a zigzag shape is
The effect of changing the shape is small, and conversely , not only does the cost of processing the seal stand (heat bar) increase, but also, for a zigzag-shaped seal other than a straight one, for example, a packaging bag for the contents due to impact during transportation. This is because the pressure on the mouth is concentrated on the edge portion of the zigzag seal and may cause the bag mouth to be broken. For this reason, a linear seal becomes the mainstream. Here, the applicant has proposed that the conventional linear seal
It clear that that is causing to prolong the degassing time from the packaging bag, even while the most simple linear seal there from the past, and short the time required for degassing, deer
Provide a packaging bag that can be degassed with a little force. Further vacuum removal
As for air, shaping and packaging by vacuum degassing can be performed in a short time, and clean vacuum degassing and shaping can be performed even at low vacuum pressure.
Provide packaging bags. In addition, what is a seal referred to in the present invention?
Not only those that are performed for the bag mouth,
This includes general rules.

[0013] According to claim 1 of the present invention, the packaging bag filled with contents of the inner position and outer position of the bag mouth, located in the non-sheet, each with a different - Intermittent the two having Le portions linear sheet - performs Le,該Shi - Le outer sheet - non Le sheet - the inner facing Le portions sheet - Le portions, two linear
An outer non-seal portion from an air passage formed between the seals;
Inner seam to maintain the airway to the airway
Convex extending from the seal part toward the outer non-sealing part
A shape was provided to make it non-linear. Claim 2 of the present invention
According to, forming a plurality of non-seal portions in the inner seal,
The outer seal has a single non-seal portion that is larger than the non-seal portion of the inner seal, and the inner seal portion corresponds to the single non-seal portion of the outer seal. At the same time from the seal
A non -linear seal is provided by providing a convex shape extending toward the non-sealing portion to be formed .

[0014] In these claims 1 and 2, the conventional inner and outer as two linear sheet - by expansion by vacuum pressure of the air passage formed between Le, the air passage from the air passage <br /> To the air passage of the non-sealing part of the outer seal which is perpendicular to
Air path is maintained without being blocked, the linear sheet - made form Le part - non sheet Le - outer sheet in the air passage by Le between <br/>, air path perpendicular direction The air path is reliably communicated with the air bag, and a reliable air path communicating the inside and outside of the packaging bag can be secured, and the air in the packaging bag is quickly released from the air path communicating inside and outside the packaging bag. It becomes possible. This enables quick deaeration even by a low vacuum pressure in a vacuum chamber or pressing in the atmosphere.

Particularly, in the second aspect, the non-seal of the inner seal is provided.
Make the outer part of the outer seal unsealed
The inner seal is made larger than the non-seal part on the side.
The non-seal part is large enough to prevent the contents from popping out.
In any case, degassing can be promoted by providing a plurality. Also outer seal
Of the inner seal is larger than the non-seal part of the inner seal
Even a single non-sealed part allows air to escape
Is good, and because it is a single unit, it is easily closed to the outside
It has become something.

[0016]

Next, an embodiment of the present invention will be described with reference to FIGS. Insert the bag mouth 12 of the packaging bag 9 filled with the contents into the packaging bag 9
A packaging bag 9 sealed so as to have a minute gap 1 communicating with the inside and outside, and a bag mouth 12 of the packaging bag 9 has an outside position so as to have a non-seal portion at different places.
The linear seal 13 and the linear seal 14 are provided at the inner position.
There is shown what further provided with a convex seal portion 17 that the linear seal 14 portion of the inner position facing the disconnected portion 15 of the linear seal 13 outer position becomes non-linear. Especially book
In the embodiment, a single non-
The seal portion 15 is provided, and a linear seal at the inner position is provided.
14 is provided with a plurality of non-seal portions 16
15 is a packaging bag relatively larger than the unsealed portion 16
Effectiveness of the packaging bag formed as described above
Is shown by the following actions and tests.

The case where the packaging bag 9 sealed as described above is put into a vacuum chamber for vacuum degassing will be described as an example.
Shown below. When the vacuum pressure in the vacuum chamber is increased, the present invention
In the packaging bag 9 described above, the non-seal portion 15 of the seal is cut off by the tunnel-like air path 7 with the minute gap 1 as in the conventional case.
There is no be closed me. In other words, the tunnel-shaped air passage 7 at that portion is distorted by the convex seal portion 17 , and this distortion
Therefore , another tunnel is attached to the non-seal portion 15 of the linear seal 13 at the outer position located at a right angle to the tunnel-shaped air passage 7.
As a result, a tunnel- shaped air path 18 is created, and the tunnel-shaped air path 7 becomes a tunnel-shaped air path communicating with the outside of the packaging bag 9. Also provided on the linear seal 14 at the inner position
From the plurality of unsealed portions 16
That a tunnel-like air passage 18 communicating with the
A small vacuum is generated from the inside of the packaging bag 9 due to the internal pressure of the packaging bag 9.
Deaeration is possible with pressure or a small pressing force.
You.

[0018] Next the difference between the packaging bag 9 with a conventional packaging bag 10 according to the present invention illustrating the test data clarified. This shows the difference in the deaeration shaping time under the same vacuum pressure.

[0019]

[Table 1] However, even if the vacuum pressure is low, it is possible to increase the degassing and shaping time.

From the above, even if the vacuum pressure in the vacuum chamber is set low, vacuum degassing and shaping can be easily performed . Moreover, from this, even when degassing by pressing,
The time required for degassing can be significantly reduced even in empty degassed packaging .

[0021]

According to the packaging bag of the present invention as described above,
For example , it has become possible to greatly reduce the time in vacuum degassing shaping. Further, degassing is possible even with a low vacuum pressure and pressing force . In addition, products that remain soft even after vacuum degassing and shaping will be created.For example, for food-related products, the conventional image of a vacuum-packed hard lumpy, The present invention has a great effect, for example, by presenting a bulky food and responding to requests from food manufacturers and the like.

The seal according to the present invention is newly provided.
A non-linear seal is provided between the two linear seals.
Therefore, the non-linear seal is the shadow of the inner linear seal.
External force, the impact is reduced by a non-linear seal.
It does not add to the parts and the bag according to the invention
It does not cause mouth damage.

[Brief description of the drawings]

FIG. 1 is a view showing a sealed portion of a conventional vacuum degassing and shaping packaging bag.

FIG. 2 is a view showing a sealing portion of a vacuum degassing and shaping packaging bag according to the present invention.

FIG. 3 is a cross-sectional view of a sealing portion of a conventional vacuum degassing and shaping packaging bag.

FIG. 4 is a sectional view of a sealed portion of the vacuum degassing packaging bag according to the present invention.

[Explanation of symbols]

Reference Signs List 1 minute gap 2 gap between seals 3 gap between seals 4 outside of packaging bag 5 linear seal 6 linear seal 7 tunnel-shaped air path 8 inside packaging bag 9 packaging bag of the present invention 10 conventional packaging bag 11 bag mouth 12 bags Mouth 13 Linear seal at outer position 14 Linear seal at inner position 15 Non- seal part of linear seal at outer position 16 Non- seal part 17 Convex seal part 18 Another tunnel-like air passage

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 57-1772738 (JP, U) Japanese Utility Model Sho 41-25336 (JP, Y1) (58) Fields investigated (Int. Cl. ⁶ , DB name) B65D 30/00-33/38

Claims (3)

(57) [Claims] 1. An intermittent two-piece having a non-sealing portion at a position different from an inner position and an outer position of a packaging bag so as to form a minute gap which is filled and packed by a packaging device and communicates inside and outside. A packaging bag having a linear seal, and an inner seal at a position facing a non-sealing portion of an outer seal.
Of the outer seal and the non-sealing of one outer seal
Non-seal portions of multiple inner seals for the seal portion
Is arranged to include, two linear sheet - outside of Le Shi
-The seal portion of the inner seal opposite the non-seal portion of the seal;
Is an air passage formed between two linear seals.
Maintain an air passage to the air passage of the outer non-sealing part
From the inner seal part to the non-seal part of the outer seal
A packaging bag, comprising a convex seal portion extending to extend . 2. The contents are filled and packaged by a packaging device.
Position inside the packaging bag to form a small gap communicating with the outside
And non-seal portions at different positions
In a packaging bag with two intermittent linear seals
The inner seal has a plurality of non-sealed portions, and the outer seal has a single non-sealed portion larger than the non-sealed portion of the inner seal.
Le portions provided, of the two linear sheet - Le - outer sheet of the Le
The inner seal has two seals with respect to the non-seal.
From the air passage formed between the linear seals
An inner seal that holds the air passage toward the air passage in the seal section
-From the seal part of the seal to the non-seal part of the outer seal
A packaging bag comprising a convex seal portion extending . 3. An air passage formed between two linear seals, the air passage being in a different direction from the air passage and being formed in the outer seal.
The contour of the convex seal portion is formed along an arbitrary curve drawn continuously with the air passage formed in the non- sealing portion of the seal.
Packaging bag according to claim 1 or 2, characterized in that the.