JPS61115836A - Fluid 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 Field of the Invention The present invention relates to a container for fluids having side walls, a bottom and a lid made of paper, cardboard or the like as support material. More particularly, the support is impermeable to liquids by being coated on at least one side with a plastic material, the side wall is cylindrically shaped, and the lid forms an opening device. It is equipped with a removable outer cover strip.

[Conventional technology and problems to be solved]

Fruit and milk containers using paper as a support are well known, but their cross-sectional shape is generally rectangular. However, containers of a similar type to the containers described above, but with round lids, have also been proposed.

An important point with regard to impermeability is the folded or bonded seam, which requires special attention in the case of parallelepiped containers.

Although certain types of fold lines and weld seams can be avoided when using cylindrically shaped side walls, there are significant problems with impermeability between the lid or bottom and the side walls. This also applies to opening devices that can be easily opened and should be impermeable to liquids.

For this reason, attempts have already been made to form lids with opening devices by plastic molding.

However, in order to produce such lids mechanically and especially in large quantities, one mechanical problem has to be solved, for which the side walls made of covered paper are almost always made of plastic material. I had no choice but to give up on the idea of using a lid.

[Means for solving problems]

The object of the invention is to improve a container of the above-mentioned type, simplifying its construction, economical use of materials and complete impermeability, in order to enable simple mass production in large numbers. The purpose is to ensure that it can be guaranteed.

According to the present invention, the bottom and the lid are connected to the cylindrical part to form the exterior, and the inner bag is made of a sheet-like plastic material.
By placing it within the sheath and sealing it inside the removable outer cover strip, the aforementioned problem can be solved.

The placement of an inner bag within the outer packaging is itself a prior art well known from other containers. However, the inner bag of this prior art
It is placed in the outer package rather loosely, so it is necessary to open the outer package and inner bag separately.

According to the invention, since the inner bag is sealed inside the outer cover strip, it can be opened very easily. The outer cover strip is marked so that it can be easily pulled up by the average consumer, and the inner bag seal according to the invention simultaneously with the above-mentioned lifting operation.
A spout is formed.

According to the invention, it is advantageous if the bottom and the lid are flat and circular or polygonal and each is sealed at the appropriate end and fold of the cylindrical part. The cylinder is formed into a cylindrical shape using a web along a longitudinal sealing seam parallel to the central axis of the cylinder. This cylindrical portion initially has a cylindrical surface, but both ends thereof are bent at 90° and flanged to form folded portions.

By fixing a flat bottom and bottom and lid, which have a circular, oval or polygonal outer edge and can be manufactured very easily, to a suitably shaped flap formed as described above,
A cylindrical sheath for a fluid container can be manufactured.

In order to facilitate opening and pouring, according to the invention the inner bag may further be sealed from the inside around the pouring spout.

Dispensing may occur during or even after some liquid has been dispensed, in the sealed area around the dispensing spout.
This is made easier by leaving the plastic inner bag attached inside the sheath at its apex.

The spout and the annular sealing area mentioned above are usually located at the top of the lid, and the weight of the liquid within the inner bag.

This acts to pull the outer envelope downward so that if the inner bag is at least partially filled, it remains in a safe position even if the container is opened and at least some of the liquid is poured out. .

When pulling the container to open it, the paper around the spout may
It acts like a knife to cut the inner bag and open it, making it easy to open.

As a result 1, the spout has the desired shape during manufacturing.

That is, it is formed into a circle, an oval, a drop shape, a triangle, or the like.

In another embodiment of the invention, the peelable outer cover strip forming part of the lid is at least partially defined and defined by a cut line provided in said lid, and A cover strip extends from the pouring edge over the outer cover strip.

Moreover, it is more advantageous in that it is sealed to the inner surface of the lid having a punched spout.

The placement of the inner cover strip on the lower part of the outer cover strip of the lid can be easily controlled during manufacturing.

The inner cover strip is advantageously made of paper provided on both sides with a thin film of plastic material. If this strip is provided with a spout, the outer cover strip that closes the spout is cut along the above-mentioned cutting line.

Formed from the material of the lid itself.

In this way, even though it is an insertable inner bag.

By cut lines and fold lines provided on the lid and by overlapping the inner cover strips made of paper.

The spout can be formed very easily.

It is clear that such an opening device saves material and is functionally advantageous.

The inner cover strip and the spout may be located anywhere within the area of the lid, but in particular the spout is not provided in the lid itself, but near the edge of the lid. It is best to install it so that it extends straight to.

For this purpose, according to the invention it is advantageous if the sealing area between the lid and the inner bag is eccentric with respect to the lid. This sealing area includes both an annular sealing area provided on the lid in the area of the outer cover strip and an annular sealing area on the inner cover strip.

The manufacturing advantage is that a fairly large sealing area
There are several locations, and their dimensions are as follows: In the sealing process, the inner bag
both on the inner surface of the outer cover strip via the outlet and the inner cover strip, and on the inside of the inner cover strip in a circle around the spout, to the extent that it can be sealed in one step; It is larger than the spout.

In the present invention, the outer cover strip has two straight and parallel cutting lines on both sides, extending from the outer edge of the lid to near the center, and the outer cover strip has a tab on the outer edge. , connected to the inner cover strip along at least two parallel seams running proximate the outside of the cut line, and the strip includes:
It is particularly advantageous if the outer edge seam is welded to the edge of the cylindrical part and the inner bag is sealed with an annular sealing area around the spout.

A sealing area between the inner bag and the lid is easier to manufacture, but as mentioned above, the inner bag has a circular surface around the spout and the spout on the inside of the inner cover strip. sealed both to the inside of the cover strip and through the cover strip.

On the other hand, it is advantageous if the outer cover strip is constructed as part of a flat lid, in which case the cutting line forming the outer cover strip is at least partially covered by the inner cover strip. Therefore, it is preferred that the outer edge of the lid is welded to the inner cover strip near the parallel cutting lines.

This not only gives greater strength to the entire lid;
In particular, the inner bag is sealed to the inner cover strip from the inside around the spout, and the outer cover strip can be easily pulled up from the outside towards the center, so that the edge It remains parallel to and adjacent to the cover strip. That is, the edge is not pulled upwardly out of the plane of the inner cover strip by a pulling force.

Said parallel cut lines forming both sides of the outer cover strip may actually be perforations rather than continuous cuts or breaks, so that when this strip is pulled up, a constant tensile force is applied. arise. This lifting operation is performed from the outer edge of the lid to the center.

In this central portion, the outer cover strip is attached to the lid by the folded portion even after being pulled up to expose the spout.

However, the above-described pull-opening principle can also be used in the opening position, such that the outer cover strip is pulled away from the center of the lid towards the outer edge or upwards.

By attaching the inner cover strip to the flap on the outer circumference of the upper end of the cylindrical part on the lid side, sharp edges are not left behind when the outer cover strip is pulled up from the outside of the lid to the center. , forming a very suitable pouring edge.

The outward curvature of the side wall in the lower region of the pouring edge
In order not to interfere with the jet separation effect at all,
According to the invention, the pouring effect is improved only by means of a recess in the cylindrical part in the lower area of the pouring edge of the inner cover strip, which is advantageously fitted with a tab by spot welding. can do. This recess ensures that the sharp dispensing edge mentioned above sufficiently separates the jet of material dispensed across it.

Adhesive forces between the upper outer surface of the side wall and the underside of the outer cover strip being pulled apart are excluded, since the recesses in the lower region of the spouting edge actually prevent the spouting jet from This is because it does not encounter any substances and can flow out of the container in the desired manner.

The tab is attached below the spouting rim and in order to protect the spouting rim and retain the outer cover strip within the cylindrical shell of the container when the container is not yet opened. For this purpose, spot welding points are provided in the area of the recess.

Another feature of the invention is that the outer cover strip is provided between the free ends of the parallel cut lines of the inner end of the outer cover strip to restrain it when it is pulled open and lifted. , a curved cutting line is provided.

The outer cover strip has a rectangular shape in plan view on the flat lid. Both sides in the longitudinal direction are formed by the above-mentioned parallel cutting lines. If tabs are provided on the outside as described above, the outer cover strip is provided with a preferably curved cutting line by said tabs and two sections provided at both ends joining said tabs.
formed by the outer flap of the book.

On the side opposite the cut or fold line and edge of these outer cover strips, a suitably curved cut line is provided between two parallel cut lines; Do not directly engage parallel cutting lines.

If this were the case, the outer cover strip would be completely removable when pulled up, allowing the consumer to close the container again and throw it away in the trash. . However, if the appropriately curved cut lines are connected by a fold line at the inner ends of the parallel cut lines, the outer cover strip remains on the lid by the fold line even after being pulled up. can be left in.

When the curvature of the cutting line provided between these fold lines is formed such that the center of the curvature is on the spout side with respect to the connecting line passing through the two fold lines at the ends of the cutting line. As a result, the protrusion formed on the outer cover strip causes the outer cover strip to be 90 degrees out of the plane containing the lid.
When turned over by more than 0°, the outer cover strip can be lifted apart so that it is restrained and rests on the inner cover strip, with the strip remaining in the lifted position. As a result, the contents of the container can easily flow out without the outer cover strip hanging down in the jet.

The outer cover strip is preferably attached to the inner cover strip by two sealing points in the central region of the lid, ie in the spout.

Alternatively, a sealing area can also be provided, but this sealing area is preferably not arranged on top of the inner cover strip between the spout and the spout edge. When pulled upwards, the plastic coating is broken at the adhesive point and the liquid flowing on the outflow surface of the inner cover strip flows into the paper, softening and staining it.

For this purpose, the adhesive point or line between the inner cover strip and the outer cover strip is arranged on the side of the spout away from the spout edge.

As an auxiliary means for holding down the outer cover strip, if a tab is provided, as an auxiliary means for fixing the tab to the upper side wall of the container outer shell, the above-mentioned welding can be used, as already explained. A point is provided within the area of the recess.

Other effects, features and usage methods of the present invention will be explained by using examples with reference to the accompanying drawings.
I think it will become clear.

〔Example〕

FIG. 1 shows the external appearance of a liquid container according to the present invention in perspective.

This liquid container consists of a cylindrical exterior (1) made of a support made of paper with a thin plastic coating on both sides.
The exterior (1) is formed by a cylindrical side wall (2), a flat circular bottom (not shown) and a flat circular lid (3). The cylindrical side wall (2) has a circular shape in plan, similar to the cross section of the cylindrical side wall (2), and has 4 inward folds at both ends of the cylindrical side wall (2).
) is welded to the

As shown in FIG. 1, the lid (3) is provided with an opening device visible from the outside. This opening device consists of an outer cover strip (5) with a tab (6) at the front and a lid (3).
The inner cover strip overlaps the outer cover strip in the area of (
7).

The outer cover strip (5) has two parallel cutting lines (8);
- On the side part, an outer curved cutting line (9) and a fold line (10) continuing at both ends thereof, and an inner curved cutting line (11)
and a fold line (12) following its outer edge.6 An inner bag (13) made of plastic material is defined by an outer bag (1).
located within. As shown in Figure 7.

The inner bag (13) has a sealing surface (14) with two openings.
It is eccentrically attached to the top of the exterior (1), and is also attached to the bottom, although not shown in the drawings.

From Figure 3, we can see that the inner bag (13) is connected to the lid (3) and the inner cover strip (
7) You can see how it is sealed.

The inner cover strip (7) has a hole for the spout (15). An inner bag (13) protrudes from the spout (15) to the inside of the outer cover strip (5) and is placed within the area (16) as shown in FIGS. Sealed inside the cover strip. This area (16) corresponds to the generally circular inner sealing surface (17) in FIG.

The inner bag (13) is also welded to the inside of the inner cover strip (7) along the annular sealing surface (18), as shown in FIGS. 3, 4 and 7.

The inner cover strip (7) is clearly disclosed in the perspective view of FIG.

The upper surface of the inner cover strip (7) runs parallel to the cutting line (8) of the outer cover strip (5) and along two seams (19) located near the outside thereof, and at the welding point ( 21) respectively the lid (3) and the outer cover strip (5) contained therein.
) and are welded to.

The lower surface of the inner cover strip (7) is formed by a seam (20).
6. Also sealed to the edge of the cylindrical side wall (2 folds 4). The inner cover strip (7) supports the inner bag (13) along the annular sealing surface (18), as shown in FIG.

It should be noted that the seam (19) terminating in the center of the inside of the lid (3) is not connected by a transverse seam.

When the container is opened, air enters the lid (3) through this part.
) and the inner cover strip (7) and can enter the gap (22) shown in FIG. 4, which acts as a so-called air hole and facilitates pouring.

In the manufacturing process, first, the inner cover strip (7) is
Lid (3) at weld point (21) along seam (19)
It is sealed on the underside, i.e. inside, of the

Next, the inner bag (13) is covered with an inner cover strip (7) over the entire sealing area (14) consisting of two partial areas (17) and (18).
) together with the lid (3). The lid (3) has a seam (20) on one side, as shown in FIG.
and on the other side by a seam (23) which is an extension of seam (20).

A tab (6) is fixed in the recess (25) with a spot weld point (24) below the pouring edge (26).

To open the container shown in Figure 1, grasp the tab (6) and pull it away from the attachment point (24), as shown in Figure 5.
Rotate upwards into the plane containing the lid (3).

In case of continuous cutting line (8), outer cover strip (5)
can be easily lifted and by opening the rear spot welding point (21).

2 and 4, centering on the axis passing through the fold line (12).
It can be rotated to the position shown in the figure.

As a result, the inner curved cutting line (11) is located on the side of the spout (15) as shown in FIGS. 2 and 4, so the outer cover strip (5) is held in the position shown. can do.

When you pull up the outer cover strip like this, the spout (15
) acts as a cutting edge and the inner area (17)
is completely cut away from the outer annular region (18).

The region (17) is removed and left attached to the inside of the outer cover strip (5), as shown in FIGS. 2 and 5.

This forms a spout (15). In this case, the inner bag (13) is still attached to the lid by means of the annular sealing surface (18) via the inner cover strip (7).

When the liquid is dispensed, air passes through the welding point (21) and from under the lid (3) over the inner cover strip (7).
It flows into the cavity (22) shown in the fourth figure above the inner bag (13).

Therefore, there is no need to provide a separate air hole to allow air to flow into the inner bag (13), and an excellent feature is obtained in which there is no pulsation of liquid.

Since the jet of liquid to be dispensed is directed from the dispensing edge (26) and the recess (25) prevents the dispensing edge (26) from adhering to the upper part of the cylindrical side wall (2), said jet
Can easily flow out of the container6

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the external appearance of the fluid container in the closed state, and the position of the inner cover strip on the lid is indicated by a line. FIG. 2 is a perspective view of the upper portion of the fluid container with the container opened and the outer cover strip pulled up; FIG. 3 shows the lid of the fluid container shown in FIG.
This is a vertical cross-section taken along the direction of the arrow, showing the tab being slightly lifted from its original pressed position. FIG. 4 is a longitudinal cross-sectional view showing a state in which the outer cover strip in FIG. 3 is completely pulled up. 5 to 8 are exploded perspective views of the upper portion of the fluid container shown in FIG. 1, respectively. (1) Exterior (2) Cylindrical side wall (3)
Lid (4) Fold back 5) Outer cover strip (6) Tab (7) Inner cover strip
(8) Cutting line (9) Curved cutting line (10) Folding line (11) Curved cutting line (12) Folding line (
13) Inner bag (14) Seal area (1
5) Outlet (16) Area (17) Inner sealing surface (18) Annular sealing surface (19) (
20) Seam (21) Welding point (22) Gap (23) Seam (24) Spot welding point (25) Recess (26) Pour edge Fig. 1

Claims (8)

[Claims] (1) side walls made of paper, cardboard, or the like made impermeable to liquids by coating on at least one surface with a plastic material;
2), the bottom and the lid (3) are provided as supporting members, the side wall (2) has a cylindrical shape, and the opening device (5) (15
), a removable outer cover strip (5) is provided on the lid (3) to form an outer cover (1), the bottom and the side wall (2) being joined to form an outer shell (1). In addition, an inner bag (13) made of sheet-like plastic material
a fluid container, characterized in that the fluid container is arranged within the outer housing (1) and sealed inside a removable outer cover strip (5). (2) Claim characterized in that the bottom and the lid (3) are flat and circular or polygonal and are each sealed in a corresponding end flap (4) of the cylindrical side wall (2). The fluid container according to item (1). (3) The inner bag (13) covers the area around the spout (15) (
18) The fluid container according to claim 1 or 2, further sealed from the inside. (4) a pull-apart outer cover strip (5) is part of the lid (3) and is at least partially located at the cut line on the lid (3);
8), and the inner cover strip (7) is provided to extend from the pouring edge (26) over the entire outer cover strip (5), and Having a spout (15) formed by punching it out,
A fluid container according to any one of claims 1 to 3, characterized in that it is sealed on the inner surface of the lid (3). (5) Between the lid (3) and the inner bag (13), there is a seal area (
14) is provided eccentrically on the lid (3), the fluid container according to any one of claims (1) to (4). (6) The outer cover strip (5) is attached to the outer edge (4) of the lid (3).
(9) having two straight and parallel cutting lines (8) on both sides extending from (10) (26) to approximately the center of the lid (3);
and has a tab (16) on the outer edge (4) (26) and an inner cover strip (7) along at least two parallel seams (19) running near the outside of the cutting line (8). The inner cover strip (7) is connected to the outer edge seam (20
) to the flap (4) of the cylindrical side wall (2), and that the inner bag (13) is sealed over the entire annular sealing area (18) around the spout (15). Featured Claims Items (1) to (5)
A fluid container according to any of paragraphs. (7) A recess (25) is provided in the area below the pouring edge (26) of the inner cover strip (7) of the cylindrical side wall (2), and the tab (6) is attached to the recess (25) by spot welding. 25) The fluid container according to any one of claims (1) to (6). (8) Outer cover strip between the free ends of parallel cutting lines (8) (
5) the inner end is provided with a curved cutting line (11), which allows it to be retained when the outer cover strip (5) is pulled open and lifted; A fluid container according to any one of claims (1) to (7), characterized in that: