JPS6133956A - Filling sealing section for vessel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (a) Purpose of the invention "Field of industrial application" This invention relates to a filling seal part of a container,
Specifically, the present invention relates to the structure of a filling seal portion of an opaque bag container or cup container, and is used, for example, in a retort pouch/cup container made of a laminated material containing aluminum foil.

[Prior Art] It is well known that bag containers and cup containers that are sealed by heat sealing after filling have been used for packaging foods and other articles.

In particular, for long-term storage or retort use, filled and sealed containers using laminated materials containing aluminum foil or aluminum vapor-deposited film, which have excellent barrier properties against the contents and light-shielding properties, are often used. Additionally, the lids of bags and cup containers are often fully printed.

Generally, when filling and sealing contents into a bag container or cup container, if the contents or other foreign matter gets caught in the sealing part,
The sealing performance of the area deteriorates, making it easy for the contents to leak from that area, or allowing air to enter, causing the contents to rot or change in quality. Essential for management.

However, in conventional bag and cup lids that are made of laminated materials including aluminum foil or aluminum vapor-deposited film, or that are printed on the entire surface, the seals are opaque, so foreign particles can There is a problem in that it is very difficult to detect seal failures due to jamming.
For this reason, when a problem occurs in the process, it may be detected late, leading to a large number of seal defects of this type.
It is desired to develop a technique that will enable easy detection of seal failures due to foreign matter being trapped.

[Problems to be Solved by the Invention] This invention has been made in view of the above-mentioned circumstances. It is an object of the present invention to provide a filling seal part that maintains the properties of the filling seal part and allows easy visual detection of seal failure due to foreign matter being trapped.

(B) Structure of the Invention Corresponding to this object, the filling sealing portion of the container of the present invention is such that at least a portion of one or both of the overlapping seals in the filling sealing portion is made transparent or translucent. It is characterized by being composed of

The details of this invention will be explained below with reference to the drawings showing one embodiment.

In FIGS. 1 and 2, reference numeral 1 indicates a filling seal portion of the container.

The filling seal part 1 is located at the upper end of the pouch container 2.

The pouch container 2 is formed by overlapping a rectangular front piece 3 and a back piece 4, applying a side seal to the side seal part 9 and a bottom seal to the bottle seal part 5, and forming it into a bag with the top open. After filling, the filling seal portion 1 at the upper end is heat-sealed and sealed.

The filling seal portion 1 has seals 5 and 6 having a width W1 at the upper ends of the front piece 3 and the back piece 4 of the pouch container 2, respectively, and the inner surfaces of the seals 5 and 6 are heat-fused by heat sealing. The filling seal portion 1 is formed by attaching the filling seal portion 1.

The configuration of the front piece 3 and its seal 5 will now be described.

The front piece 3 is made up of a base material 7, an outer sealing material 8, and an inner sealing material 11.

The base material 7 is a drawing material that constitutes almost the entire pouch container 2.
h covers the entire area except for a part of the sealing. The base material 7 has a three-layer laminated structure, the outer surface layer is a transparent heat-resistant film 16, the middle layer is an aluminum cage 17, and the inner surface layer is a transparent sealant 18. Here, the heat-resistant film 16 is made of, for example, biaxially oriented polyester, biaxially oriented nylon, biaxially oriented polypropylene, etc., and the sealant 18 is made of a heat-fusible material such as unoriented polypropylene or unoriented polyethylene.

The external sealant 8 has a two-layer laminated structure, the outer layer is a transparent heat-resistant film 16, and the inner layer is a sealant [.
18, and the outer surface sealing material 8 is transparent as a whole.

The inner surface sealing pad 11 is a single layer of sealant 18,
It is transparent.

The upper end portion 12 of the material 7 is sandwiched between the outer surface sealing material 8 and the inner surface sealing material 11. That is, the outer surface sealing material 8 has its lower inner surface in contact with the heat-resistant film 16 on the outer surface of the upper end portion 12 of the base material 7, and the inner surface sealing material 11 is
Sealant 18 on the inner surface of the upper end 12 of the base material 7
The three pieces of material 7 and 8°11 overlap with each other in this part.

The upper part of the outer sealing material 8 and the upper part of the inner sealing material 11 are heat-sealed to form a transparent part 13, and this transparent part 13 occupies the width W2 of the upper end of the front piece 3. The transparent portion 13 and the base material 7 form a continuous fluid-tight membrane-like front piece 3.

The width W1 of the sealing 5 at the upper end of the front piece 3 is greater than W2, so the upper part of the sealing 5 is occupied by the transparent part 13, and the lower part 15 of the sealing 5 is overlapping the three pieces of material 7.8.11. It occupies a portion of the upper portion of the opaque portion.

The structure of the back piece 4 is exactly the same as that of the front piece 3, and the base material 7
, the outer surface sealing material 8, and the inner surface sealing material 11, the upper end of the back piece is a seal 6 having a width W1 including a transparent portion 13 having a width W2.

The filling seal part 1 is made by heat-sealing the inner surfaces of these seals 5 and 6 together, and in the filling seal part 1, the C on the sealant 18 on the inner surface of the seal 5 of the front piece 3 is
I-DI-El and 02-D2-F2 of the sealant 18 on the inner surface of the seal 6 of the back piece 4 are in a state where they are pressure-fused as surfaces.

In FIGS. 3 and 4, reference numeral 1a indicates a filling seal portion of a container according to another embodiment of the present invention.

The filling seal portion 1a is located at the upper end of the pouch container 2a and has a transparent portion 13a.

The pouch container 2a has the same structure as the pouch container 1 except for the filling seal portion 1a.

In the filling seal part 1, the part of the base material 7 included in the sealing parts 5 and 6 is only the lower part of the transparent part 13;
In the filling seal portion 1( ), the sealing allowances 5a and 6a surround the transparent portion 13a in a window frame shape and include a part of the base U7a.

That is, a horizontally long rectangular hole 21 is formed near the upper end of the front piece 3a of the pouch container 2a, passing through the front and back sides of the front piece 3a, and the length of the shorter side of the hole 21 is W4. .

The hole 21 is covered with the outer sealing material 8 from the front side and the inner sealing material 11 from the back side, and the inner sealing material 11 is fused to the outer sealing material 8 at the hole 21. In addition, the peripheral edge 22 of the hole 21 is fused to the inner surface of the base material 7a to form the hole 2.
1 is blocked.

At the peripheral edge 22 of the hole 21, the base material 7a, the outer seal material 8,
The three pieces of the inner surface sealing material 11 overlap and are opaque, but the hole 21 portion is a transparent portion 13a of a laminated structure.

The upper end of the front piece 3a is a seal 5a having a width W3, and the seal 5a includes a transparent portion 13a and a peripheral edge 22 thereof.

The structure of the back piece 4a and the seal 6a at its upper end is the same as that of the front piece 3.
The configuration is the same as that of a and its sealing 5a.

The inner surface of the seal 5a and the inner surface of the seal 6a are fused to form the filled seal portion 1a, and in the fill seal portion 1a, the inner surface of the seal 5a, Fl-01-1l-J1, and the inner surface of the seal 6a are bonded. F2-G2-H2-J2 are pressure fused as surfaces.

In the filling seal part 1 of the above two embodiments, sealing 5, 6
Although the transparent portions 13 are provided on both sides, the transparent portions may be provided on only one side. The same applies to the filling seal portion 1a.

As shown in FIG. 5 and FIG.
It can also be applied to the filling seal part. That is, the second
The structure of the sealing 5 shown in the figure is applied over the entire length of the filling seal portion 1b at the peripheral edge of each 24, and the lid 24 is
has a sealing 5b on the periphery. Sealing 5b is around the base material 7;).

It includes an edge 12b and a continuous transparent portion 13b surrounding the outside thereof. In the transparent portion 13b, the inner sealing material 11 fused to the inside of the periphery 12'b of the base material 7b and the outer sealing material 8 located outside the periphery 12b are fused on the outer periphery of the periphery 12. The width is W2.

On the other hand, the upper end edge of the container body 23 is flange-shaped and has a seal 6b having a width W2, and the inner surface of the seal 5b and the upper surface of the seal 6b are pressure-fused to form a filling seal portion 1h.

Further, as shown in FIGS. 7 and 8, the configuration of the sealing 5a shown in FIG. 4 is applied to the lid 24C of the cup container 2C,
It may also be a filling seal portion 1C.

In this case, the shape of the base material 7C of the lid 24C is such that a slit 2IC of width W4 is formed in the peripheral edge as shown in FIG. It is more convenient to connect them into an IC shape because the base material does not separate, and the slit 21c becomes the transparent part 130 of the filling seal part 1c.

[Effect] The filling seal portions 1, 1a configured in this way.

1b, ic, the trapped and sealed contents and other foreign matter are in the transparent part 13.13a.

It is visually observed through 13b and 13c. Therefore, even if a jammed seal occurs during the filling process, it can be detected immediately, and by making process adjustments, a large number of seal defects of this type can be prevented from occurring, and it can also be checked at the market stage. Become.

(c) Effects of the Invention As is clear from the above explanation, according to the present invention, while maintaining the barrier properties and light-shielding properties of a filled and sealed container made of an opaque material that has excellent barrier properties and light-shielding properties against the contents, Moreover, it is possible to obtain a filling seal portion in which seal failure due to foreign matter trapped can be easily detected visually.

[Brief explanation of the drawing]

Fig. 1 is a front view of a pouch container having a filling and sealing portion according to an embodiment of the present invention, and Fig. 2 is a cross-sectional view of the pouch container A section shown in Fig. 1, which shows the state before filling and sealing. FIG. 3 is a front view of a pouch container having a filling seal portion according to another embodiment of the present invention, and FIG. 4 is an IV-T diagram showing the state of the 8 parts of the pouch container shown in FIG. 3 before filling and sealing.
5 is a plan view of a cup container having a filling seal portion according to still another embodiment of the present invention; FIG. 6 is a longitudinal sectional partial view of the cup container shown in FIG. 5; FIG. 8 is a partial vertical cross-sectional view of a cup container having a filling seal portion according to still another embodiment of the present invention, and FIG. 8 is a plan view of the base material of the cup container shown in FIG. 7. 1...Filling seal part 2...Pouch container 3.
...Front piece 4...Back piece 5...Seal fee
6...Sealing allowance 7...Base material 8...Sealing material for outer surface 9...Side seal portion 11...Sealing material for inner surface 12...Top end portion 13...Transparent part
14... Upper edge of base material 15... Lower part of sealing allowance 16... Heat resistant film 17... Aluminum foil
18... Sealant 21... Hole 22...
・Global edge 23... Container body 24... Lid Patent applicant Osamu Kawai, Patent attorney representing Toyo Seikan Co., Ltd. Figure 1 (V Figure 3 Figure 5 Figure 6 Figure 7 Figure V' Figure 8

Claims (1)

[Claims] A filling and sealing part for a container, characterized in that at least a portion of one or both of the sealing margins to be overlapped and sealed in the filling and sealing part is transparent or translucent.