JPH02269641A - Container - Google Patents

Abstract

PURPOSE:To securely break a shell in a belt form in the direction coincident with the direction of a directional film, by protruding a picking-up piece to the direction of coincident with the directional film on the outer side of two folded sides of the blanks. CONSTITUTION:A shell 11 is formed by superposing the two opposite sides of a rectangular blanks 20 made of a laminate sheet which has a monoaxially directional synthetic resin film 28 and a paper layer 22. A picking-up piece 13 is protruded in the direction coincident with the directional film on the outer side of the two folded sides of the blank 20 and hence, the shell 11 can be broken along the hypothetical belts 18A, (18B) and half-done bread or the like contained in the inside can be taken out by pulling outward the picking-up piece 13 protruded at the shell 11.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention includes a cylindrical body, Attached to both open ends of the body The present invention relates to a container consisting of a pair of closed lid parts.

(Prior Art) Conventionally, paper containers have been known that are made up of a cylindrical paper body and a pair of metal lids that are wrapped around both open ends of the paper body, and that store bread dough or the like inside. It is being

Such paper containers are usually spiral-wound composite cans, the cylindrical paper body of which is basically composed of three layers: an outer layer, a cardboard layer, and an inner layer. To take out bread dough, etc. stored inside, the spiral-shaped outer layer is peeled off, and then the entire cylindrical paper body is cut open by pressing a knife or the like along the seams of the cardboard layers (Tokuko Sho). 48-9038. Japanese Patent Publication No. 54-23976° and Japanese Patent Publication No. 59-120054).

Furthermore, the user forms the taken-out bread dough into a predetermined shape and bakes it in an oven or the like to produce bread.

(Problems to be Solved by the Invention) As described above, after peeling off the outer layer of the cylindrical paper body, the user tears the body with a knife or the like to remove the bread dough, etc. stored inside. However, it takes time and effort to break the cylindrical paper body in two steps, and requires a small tool such as a knife. Moreover, when pressing against it with a knife or the like, there is a risk of damaging the bread dough itself.

The present invention has been made in consideration of these points,
To provide a container whose body can be easily and reliably broken without using a breaking means such as a can opener and without damaging the contents.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a container comprising a cylindrical body and a pair of lids added to both open ends of the body, wherein the body is made of laminated sheets. The laminated sheet is formed by overlapping two opposing sides of a rectangular blank, and the laminated sheet has a uniaxially oriented synthetic resin film and a paper layer, and the two overlapping sides of the blank The device is characterized in that a gripping piece is provided protruding from the front edge portion in a direction that coincides with the direction of the directional film.

(Function) By gripping the gripping piece and pulling it outward, the body can be reliably broken into a strip in the direction that matches the direction of the directional film.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

1 to 4 are views showing one embodiment of a container according to the present invention.

As shown in FIGS. 2A, 2B and 3, the container 1
0 is composed of a cylindrical body 11 and a pair of lids 12 attached to both upper and lower open ends of the body 11.

Among these, the pair of lids are made of paper, synthetic resin, or metal, and generally iron lids are often used.

In addition, the body does not necessarily have to be cylindrical; it can be molded into a polygonal prism body such as a triangular prism or hexagonal prism, and in these cases, a lid with a shape that matches the shape of each body can be used. It is necessary to use

The lid part 12 may be attached to the body part 11 by tightening it as shown in FIG. 2A, or by adhesively fixing the lid part 12 to both open ends of the body part 11 as shown in FIG. 2B. It's okay.

On the other hand, the body section 11 is constructed by forming a rectangular blank made of a laminated sheet having a paper layer or a synthetic resin film, which will be described later, into a cylindrical shape, and pasting the two overlapping sides together.

Also, a grip part 1 is placed on the front side of the two overlapping sides.
3 is installed protrudingly.

Next, the laminated sheet forming the blank will be explained in detail with reference to FIG.

The laminated sheet shown in Figure 1 is extruded polyethylene 21 (ECPE), (20μ)/i
! ! Material paper layer 22, (270g/g)/extruded polyethylene 23 (ECPE), (20μ)/aluminum 24 (17), (7μ)/extruded polyethylene 25 (E
CPE), (20μ)/polyethylene terephthalate 2
6 (PET), (12μ)/extruded polyethylene 27
(ECPE), (20μ)/stretched polyethylene 28 (
OPE), (50μ)/extruded polyethylene 29 (EC
PE), (40μ).

Among these, the extruded polyethylene 21 and 29 are seal parts, each having a thickness of 15 to 40μ and 30 to 60μ, and have an adhesive function that allows them to come into contact with each other and stick together when the blank is formed into a cylindrical shape. have. Also, the paper layer 22 is 20
The material used is 0 to 300 g/rTiI and has a predetermined pressure resistance depending on the contents.

Further, the extruded polyethylene 23 has a thickness of 15 to 25 μm, and functions as an adhesive for bonding the paper layer 22 and the aluminum 24 together. Also, the aluminum 24 has a thickness of 5 to 15
It is μ and has a predetermined gas barrier property, and it goes without saying that not only aluminum but also a synthetic resin film having a predetermined gas barrier property can be used.

Furthermore, the extruded polyethylene 25 has an adhesive function for bonding the aluminum 24 and the polyethylene terephthalate 26.

Moreover, the polyethylene terephthalate 26 has a thickness of lO~3
0 μ and has a predetermined strength depending on the contents,
If necessary, it is possible to replace it with another synthetic resin film, and depending on the physical properties of the contents, the above-mentioned aluminum 24 and/or the polyethylene terephthalate 26 can be omitted. Also, extruded polyethylene 27
has a thickness of 15 to 25 μm and functions as an adhesive for bonding polyethylene terephthalate 26 and stretched polyethylene 28 together.

The stretched polyethylene 28 has a thickness of 20 to 60 μm, and is a synthetic resin film having orientation in the -axial direction, for example, stretched polyethylene that has been axially stretched or has orientation in the other direction compared to that in one direction. It is constructed from biaxially stretched polyethylene, which is said to be extremely large. In addition, −
If it is a synthetic resin film that has directionality in the axial direction,
Instead of the stretched polyethylene 28, other polyolefin films such as stretched polypropylene may be used.

As described above, the stretched polyethylene 28 having a directionality in the -axial direction is easily broken in this direction.

Next, a blank 20 formed by punching out a laminated sheet having such a structure will be described with reference to FIG. 4.

As shown in FIG. 4, the stretched polyethylene 28 of the rectangular blank 20 has directionality in a predetermined uniaxial direction (arrow direction in FIG. 4).

Further, on the right side of the upper side of the blank 20, a gripping piece 13 is provided to protrude in a direction that matches the directionality of the stretched polyethylene 28.
A pair of notches 14 are formed on both sides of the gripping piece 13 . Furthermore, a pair of notches 15 are formed on the lower side of the blank 20 at positions facing the notches 14.

Further, a virtual band-shaped portion 18 is formed in the blank 20 and extends downward from the gripping piece 13 in a direction that matches the directionality of the stretched polyethylene 28 . This virtual band-shaped portion 18 is a broken band-shaped portion that occurs when the grip portion 13 is gripped and pulled. The above-mentioned notches 14, 15 are for determining the breaking direction of the blank 20 and for facilitating the breaking.

Furthermore, if you want to increase the breaking distance of the body, use blank 2.
It is also possible to form a plurality of notches 16 and 17 facing each other on the left side of the upper side 20a and the left side of the lower side 20b of 0, respectively, to facilitate breaking of the overlapping portion due to adhesion between the upper side 20a and the lower side 20b. . Note that the notch 17 is located near the lower end of the virtual band-shaped portion 18B when the breaking distance is long.

Next, the operation of this embodiment having such a configuration will be explained.

First, as shown in FIG. 4, a rectangular blank 20 is prepared. In this case, the stretched polyethylene 28 has directionality in a predetermined uniaxial direction.

Subsequently, this blank 20 is formed into a cylindrical shape.

When forming the blank 20 into a cylindrical shape in this manner, the upper side 20a of the blank 20 is placed on the front side so that the upper side 20a and the lower side 20b overlap.

In this case, if it is necessary to improve the gas barrier properties, water resistance, etc. of the lower side 20b of the blank 20,
Skiving and hemming treatments as shown in FIGS. 5 and 6 are performed in advance.

Next, as shown in FIG. 6, the overlapping upper side portions 20a
By heating the and lower side part 20b with an appropriate heating means, the extruded polyethylene 29 of the upper side part 20a and the extruded polyethylenes 21 and 29 of the lower side part 20b are bonded to each other to form the cylindrical body part 11. .

Subsequently, contents such as bread dough are stored in the body 11, and a pair of lids 12 are attached to both the upper and lower open ends, thereby obtaining the container 10 shown in FIGS. 2 and 3.

The user grasps the gripping piece 13 protruding from the body 11 and pulls it outward, thereby moving the body 11 into the virtual belt-shaped portion 18A,
Alternatively, it can be broken along line 18B and the bread dough etc. stored inside can be taken out.

Next, the breaking operation of this body portion 11 will be described in detail.

First, when gripping piece 13 is gripped and pulled outward, gripping piece 13
A pair of notches 14 formed on both sides of the paper trunk 1
1 begins to break. The direction of fracture from this notch 14 matches the directionality of the stretched polyethylene 28.

In this case, as described above, the stretched polyethylene 28 having directionality is easily broken in this direction, so the body part 11 is broken along the virtual band-shaped part 18A when the breaking distance is short, The portion 11 is broken in a spiral shape over substantially the entire area.

In addition, when the fracture distance of the trunk is increased, the fracture progresses along the virtual band-shaped portion 18B when the fracture distance is long, and when the fracture point comes to the overlapped portion of the upper side 20a and the lower side 20b, the upper side The upper side portion 20a is broken from the notch 16 formed in the portion corresponding to the virtual band-like portion 18B, and further, the breakage of the body portion 11 proceeds first along the virtual band-like portion 18B.

As described above, according to this embodiment, the trunk portion 11 can be reliably broken along the virtual band-shaped portion 18A or 18B without making the breaking portion tapered.

(Specific example) Next, four types of containers 10 with different layer configurations of the body 11 are prepared, and each has pressure resistance, air permeability, gas barrier property,
A specific example in which the unsealability was tested will be described in detail.

The layer configurations of the four types of body parts 11 are as follows.

A ECPE20μ/paper layer 270sr/rr? /E
CPE20μ/AΩ7μ/ECPE20μ/PET12
μ/ECPE20μ10PE50μ/ECP240μ, B ECP220μ/Paper layer 270g/Go/ECPE
20μ/AΩ7μ/ECPE20μ10 P E 50
μ/ECPE40μ, CECPE20μ/paper layer 270g/r#/ECP・E2
0μ/PET12μ/ECPE20μ10PE50μ/
ECPE40μ, D ECPE20μ/Paper layer 270g/I/E C
P E 20 tt/A97μ/ECPE20μ/PE
T12μ/ECPE20μ10PE50μ/ECPE4
0μ, control ECPE20μ/paper layer 270g/rf/E
CPE20μ/AΩ7μ/ECPE20μ/PET12
μ/ECPE40μ Next, the test results are shown in the table below.

Table Inspection Results As can be seen from the inspection results, sample A has improved pressure resistance compared to sample B (which does not have a pressure-resistant PET layer), and sample C (which has improved gas barrier properties). It is possible to improve the gas barrier property compared to the case (without the A1 layer). Furthermore, sample D (
Pressure resistance, gas barrier properties, and oil resistance can be improved compared to those without skive or hemming treatment.

Samples A-D were all control (directional OPE)
As shown in the test results, the unsealing properties are superior to those with no layer.

〔Effect of the invention〕

As explained above, according to the present invention, by pulling the gripping piece, it is possible to break the body into a strip in the direction that matches the direction of the directional film.

In this case, since the breakable band does not become tapered, the body can be reliably broken and the contents can be taken out.

[Brief explanation of drawings]

1 to 6 are diagrams showing one embodiment of the container according to the present invention, FIG. 1 is a diagram showing the layer structure of the body of the container, and FIG.
Figures A and 2B are side sectional views of the container, Figure 3 is a perspective view of the container, Figure 4 is a plan view showing the blank forming the body, and Figures 5 and 6 are skive hemming treatments. It is a sectional view showing a state. 10... Container, 11... Body, 12... Lid, 1
3...Gripping piece, 20...Blank, 21...E
C.P.E. 22... Paper layer, 23... ECPE, 24... AΩ
, 25-ECPE, 26-PET, 27-ECPE. 28...OPE, 29...ECPE.

Claims (1)

[Claims] In a container consisting of a cylindrical body and a pair of lids attached to both open ends of the body, the body is formed by overlapping two opposing sides of a rectangular blank made of a laminated sheet. The laminated sheet has a paper layer and a directional film made of synthetic resin that has directionality in a uniaxial direction, and the front side of the two overlapping sides of the blank is aligned with the direction of the directional film. A container characterized by having a gripping piece protruding in the direction of