JPH0790868B2 - Fluid container - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a fluid container having a side wall, a bottom and a lid made of paper, cardboard or the like as a support. More particularly, the support material is impermeable to liquids by coating at least one surface with a plastic material, the side wall is cylindrical and the lid forms the opening device. Therefore, a detachable outer cover strip is provided.

[Prior art and problems to be solved]

Although fruit and milk containers using paper as a support material are well known, their cross-sectional shape is generally rectangular. However, containers of the same type as the one described above, but with a round lid, have also been proposed.

An important aspect of impermeability is the fold or splice seam, which is of particular concern in the case of parallelepiped containers.

While some types of fold lines and weld seams can be avoided when using cylindrically shaped sidewalls, there is a significant problem with impermeability between the lid or bottom and the sidewall. This is also the case for opening devices that can be easily opened and should be impermeable to liquids.

For this reason, attempts have already been made to form a lid with an opening device by plastic molding.

However, in order to produce such a lid mechanically, and in particular in large quantities, mechanical problems have to be solved, which is why in most cases the side wall made of coated paper is covered with a plastic material lid. I had to give up the idea of using.

[Means for solving problems]

The object of the present invention is to improve a container of the above-mentioned type so as to enable a large number of simple mass productions, to simplify its construction, to use the material economically and to be completely impermeable. It is to be able to guarantee.

Therefore, the present invention, which is a means for solving the problem, is made from paper, cardboard, or the like, which is made impermeable to liquid by coating a plastic material on at least one surface. The opening device is provided with a side wall, a bottom, and a lid as a support member, the side wall has a cylindrical shape, the bottom and the lid are combined to form a jacket, and the lid is provided with a detachable outer cover strip. The outer cover strip is separated from the surrounding lid by a cutting line or a fold line, whereby the inner bag made of plastic sheet is sealed inside the detachable outer cover strip in the sealing area, and the jacket is formed. A container for fluid arranged in: an inner cover strip having a spout formed by punching out the inner cover strip, sealed to the inner surface of the lid, the inner cover strip having one end It forms a spout edge and the other end extends beyond the outer cover strip and extends to the area of the lid, and the inner bag extends slowly through the spout to the inner cover strip, The fluid container is characterized in that the surrounding annular region is sealed from the inside.

Placing the inner bag inside the outer packaging is itself a well known prior art from other containers. However, this inner bag of the prior art,
Since it is placed fairly loosely in the exterior, it is necessary to open the exterior and the internal tract separately.

According to the present 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 a general consumer can easily pull it up, and the seal of the inner bag according to the present invention is the same as the above-mentioned pulling operation.
A spout is formed.

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

By fixing a very easy to manufacture flat bottom and bottom and lid having a circular, oval or polygonal outer edge to a suitably shaped fold formed as described above,
It is possible to manufacture a cylindrical outer casing for a fluid container.

To facilitate opening and pouring, according to the present invention, the inner bag may additionally be sealed from the inside around the spout.

Dispensing should be done in the seal area around the spout, either during or after some liquid has been dispensed, even after it has been dispensed.
This can be done more easily by leaving the plastic inner bag attached inside the exterior at the apex of the interior of the exterior.

The spout and the above-mentioned annular seal area are usually located at the top of the lid and the weight of the liquid in the bladder acts to pull the outer sheath downward so that the bladder is at least partially filled. If so, the inner bag is in a safe position even if the container is opened and at least part of the liquid is poured out.

When pulling the container to open it, the paper around the spout
Since it acts like a knife and cuts the inner bag to open it, it can be easily opened. As a result, the spout is formed into a desired shape during manufacture, that is, a circular shape, an oval shape, a drop shape, a triangular shape, or the like.

In another embodiment of the invention, a detachable outer cover strip which forms part of the lid is at least partially defined and formed by a cutting line on said lid, and It is more advantageous in that the cover strip extends from the spout edge over the outer cover strip and is sealed to the inner surface of the lid having a stamped spout.

Placing the inner cover strip in the lower part of the outer cover strip of the lid can be easily controlled during manufacturing.

Advantageously, the inner cover strip is made of paper with a thin coating of plastic material on both sides. If the strip is provided with a spout, the outer cover strip closing the spout is formed from the lid itself and the material by the above mentioned cutting line.

Thus, despite the insertable inner bag, the spout can be formed very easily by the cutting line and the crease line provided on the lid and by overlapping the inner cover strip made of paper. be able to.

Obviously, such an opening device saves material and is functionally advantageous.

The inner cover strip and the spout may be located at any position within the area of the lid, but in particular the spout is not provided on the lid itself, but near the edge of the lid. It is recommended that it be provided so as to extend straight. For this purpose, according to the invention, it is advantageous if the sealing area between the lid and the inner bag is eccentric to the lid. The 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 is
There are several places, and the dimensions are as follows:
On the inner surface of the outer cover strip via the outlet and the inner cover strip, and to the inside of the inner cover strip forming a circle around the spout, to the extent that it can be sealed in one step, It is larger than the spout.

According to the present invention, the outer cover strip has two cut lines which are straight and parallel to each other on both sides, and extends from the outer edge of the lid to the vicinity of the center, and the outer cover strip has a tab at the outer edge. , Connected to the inner cover strip along at least two parallel seams running near the outside of said cutting line, and said strip being
It is particularly advantageous if the inner bag is welded to the edge of the cylinder by the seam of the outer edge and the inner bag is sealed in an annular sealing area around the spout.

If there is a seal area between the inner bag and the lid, it is easy to manufacture. However, as described above, the inner bag has a circular surface around the spout and the spout inside the inner cover strip. And is sealed both inside and through the cover strip.

On the other hand, if the outer cover strip is constructed as part of a flat lid, the cutting lines that at least partly form the outer cover strip are advantageously covered by the inner cover strip. Therefore, it is preferable to weld the outer edge portion of the lid member to the inner cover strip near the parallel cutting lines.

This not only gives the entire lid great strength,
In particular, the inner bag is sealed from the inside to the inner cover strip around the spout, and the outer cover strip can be easily pulled up from the outer side toward the center, so that the edge is inside the lid. It remains parallel to and outside the cover strip. That is, the edge portion cannot be pulled upward from the plane of the inner cover strip even by the pulling force.

The parallel cut lines that form both sides of the outer cover strip may actually be perforations rather than continuous cut lines, so that when the strip is pulled up, a constant tensile force is produced. . This pulling-up operation is performed from the outer edge portion to the central portion of the lid. At this central portion, the outer cover strip is attached to the lid by the folded portion even after the spout is exposed by pulling up.

However, the above-described principle of opening can also be used in the open position so that the outer cover strip is pulled away from the central part of the lid to the outer edge or upwards.

By attaching the inner cover strip to the fold at the outer circumference of the upper end of the cylindrical part, a sharp edge is left even when the outer cover strip is pulled up from the outside of the lid to the central part. , Forms a very suitable pouring edge.

The outward curve of the side wall is in the lower region of the pouring edge,
In order not to disturb the jet separation effect at all,
According to the invention, it is expedient to provide the recess in the cylindrical part in the lower region of the pouring edge of the inner cover strip and to attach the tab by spot welding.

The pouring effect can be improved only by this concave portion. This recess ensures that the aforementioned sharp pouring edge sufficiently separates the jet of substance pouring across it.

The adhesive force between the upper outer surface of the side wall and the underside of the outer cover strip to be pulled apart is excluded, because the jets that are poured out are actually This is because it does not encounter any substance and can flow out of the container in a desired manner.

The tab is mounted below the dispensing edge to protect the dispensing edge and hold the outer cover strip within the cylindrical shell of the vessel when the container is not yet opened, and For this purpose, spot welding points are provided in the region of the recess.

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

The outer cover strip has a rectangular shape in plan view on a flat lid. Both sides in the vertical direction are formed by the parallel cutting lines described above. When the tabs are provided on the outside as described above, the outer cover strip is provided by said tabs with a cutting line, preferably curved, and two outer folds on both ends joining the tabs. Is formed by.

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

If so, the outer cover strip will be completely removable when pulled up, and the consumer will throw it as a piece of trash, although the container can be closed again. However, if the appropriately curved cutting lines are connected by fold lines at the inner ends of the parallel cutting lines, the outer cover strip will remain on the lid by the fold lines even after being pulled up. Can be left on.

When the curve of the cutting line provided between these fold lines is formed such that the center of the curve is on the spout side with respect to the connecting line that passes through the two fold lines at the ends of the fold line. As a result of this, the outer cover strip is caused to come out of the plane containing the lid by the projections formed on the outer cover strip.
When it is turned over 90 ° or more, it is restrained and stands still on the inner cover strip.

In this way, the outer cover strips can be lifted apart and maintained, in which case the strips are maintained in the lifted position so that the filling of the container is placed in the jet of the outer cover strips. Can be easily drained without hanging down.

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 be provided, but it is not preferable to arrange this sealing area on top of the inner cover strip between the spout and the pouring edge. When pulled up, the plastic coating breaks at the attachment and the liquid flowing on the outflow surface of the inner cover strip flows into the paper, softening and soiling the paper.

For this purpose, the bond points or lines between the inner cover strip and the outer cover strip are arranged on the spout side remote from the spouting edge.

When a tab is provided as an auxiliary means for holding the outer cover strip, as an auxiliary means for fixing the tab to the upper part of the side wall of the container exterior, as described above, the above-mentioned welding is performed. Points are provided in the area of the recess.

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

〔Example〕

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

This liquid container consists of a cylindrical jacket (1) made of a support made of paper with a thin plastic coating on both sides. The jacket (1) is formed by a cylindrical side wall (2), a flat circular bottom (not shown) and a circular lid (3) which is also flat.

Similar to the cross section of the cylindrical side wall (2), the lid and the lid (3) are circular in plan view, and are folded inward (4) at both ends of the cylindrical side wall (2). It is welded.

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

The outer cover strip (5) has two parallel cutting lines (8),
Limited on one side by an outer curved cutting line (9) and a fold line (10) continuing to both ends thereof, and an inner curved cutting line (11) and a fold line (12) continuing to its outer end There is.

An inner bag (13) made of a plastic material is arranged in the jacket (1). As shown in FIG. 7, the inner bag (13) is eccentrically attached to the sealing surface (14) having two openings and is attached to the upper portion of the jacket (1), and is disclosed in the drawing. Not attached, but also stuck to the bottom.

It can be seen from FIG. 3 that the inner bag (13) is sealed by the lid (3) and the inner cover strip (7).

The inner cover strip (7) has a hole for the spout (15). The inner bag (13) projects from the spout (15) to the inside of the outer cover strip (5), and as shown in FIG. 2 and FIG. It is sealed inside the Aber strip. This area (16) corresponds to the generally circular inner sealing surface (17) in FIG.

The inner bag (13) is welded to the inner side 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 by the perspective view of FIG.

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

The lower surface of the inner cover strip (7) is sealed by the seam (20) to the edge of the folded back (4) of the cylindrical side wall (2). The inner cover strip (7) supports the inner bag (13) along the annular seal surface (18) as shown in FIG.

It should be noted that the seam (19) ending in the inner center of the lid (3) is not connected by lateral seams.

When the container is opened, air can pass through this portion between the lid (3) and the inner cover strip (7) and enter the space (22) shown in FIG. Acts as an air hole and facilitates pouring.

In the manufacturing process, first, the inner cover strip (7) is
Along the seam (19), the lower surface of the lid (3), that is, the inner side, is sealed at the welding point (21).

Next, the inner bag (13) is sealed to the lid (3) together with the inner cover strip (7) over the entire seal area (14) composed of the partial areas (17) and (18). Folding back (4) with the lid (3) folded inwardly of the cylindrical side wall (2) forming the side wall.
And is sealed on one side by a seam (20) and on the other side by a seam (23) which is an extension of the seam (20).

The tab (6) is fixed in the recess (25) at the spot weld point (24) below the pouring edge (26).

To open the container shown in FIG. 1, the tab (6) is grasped and pulled away from the attachment point (24), and as shown in FIG. 5, the container is rotated upwards into the plane including the lid (3).

In the case of a continuous cut line (8), the outer cover strip (5)
Can be easily lifted and rotated to the position shown in FIGS. 2 and 4 about the axis passing through the fold line (12) by opening the rear spot welding point (21). You can

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

In this way, pulling up on the outer cover and the strip, the spout (15)
The edge of the blade acts as a cutting edge and defines the inner area (17)
Completely cut and separated from the outer annular region (18). The area (17) is removed and left fixed inside the outer cover strip (5) as shown in FIGS. 2 and 5.

Thereby, the spout (15) is formed. In this case,
The inner bag (13) is still attached to the lid by the annular sealing surface (18) via the inner cover strip (7).

When the liquid is poured out, air passes through the welding point (21),
Moreover, it flows from under the lid (3) over the inner cover strip (7) and into the space (22) shown in FIG. 4 above the inner bag (13).

Therefore, it is not necessary to provide a separate air hole for the air to flow into the inner bag (13), and an excellent feature that the liquid does not pulsate can be obtained.

Since the jet of liquid to be poured is directed from the pouring edge (26) and due to the recess (25) the pouring edge (26) does not adhere to the upper part of the cylindrical side wall (2), said jet is It can easily flow out of the container.

[Brief description of drawings]

FIG. 1 is a perspective view showing the external appearance of the fluid container in a closed state, and the position of the inner cover strip on the lid is indicated by a broken line. FIG. 2 is a perspective view showing the upper portion of the fluid container with the container opened and the outer cover strip pulled up. FIG. 3 shows a portion of the lid of the fluid container shown in FIG.
A longitudinal section taken along the line II in the direction of the arrow, showing the tab slightly lifted from its original position in which it was pushed. FIG. 4 is a longitudinal sectional view showing a state in which the outer cover strip is completely pulled up in FIG. 5 to 8 are exploded perspective views of the upper portion of the fluid container shown in FIG. (1) jacket, (2) cylindrical side wall (3) lid, (4) folded back (5) outer cover strip, (6) tab (7) inner cover strip, (8) cutting line (9) curved cut Line, (10) fold line (11) curved cutting line, (12) fold line (13) inner bag, (14) sealing area (15) spout, (16) area (17) inner sealing surface, (18) Annular sealing surface (19) (20) seam, (21) welding point (22) void, (23) seam (24) spot welding point, (25) recessed portion (26) pouring edge

Claims (6)

[Claims] 1. A side wall (2), a bottom and a lid made of paper, cardboard, or the like, which is made impermeable to liquids by coating at least one surface with a plastic material. (3) is provided as a supporting member, the side wall (2) has a cylindrical shape, the bottom and the lid (3) are combined to form a jacket (1), and the lid (3) has a detachable outer cover band. Opening device (5) provided with a piece (5)
(15) is formed, and the outer cover strip (5) is separated from the peripheral lid (3) by a cutting line (8) or a fold line (12), whereby an inner bag (13) made of a plastic sheet is formed. A container for fluid, which is sealed inside the detachable outer cover strip (5) in the sealing area (14) and is arranged in the jacket (1); the inner cover strip (7) is the inner cover. It has a spout (15) formed by punching out a strip,
Moreover, the inner surface of the lid (3) is sealed, the inner cover strip (7) forms a pouring edge (26) at one end, and the other end crosses the outer cover strip (5). Extending to the area of the lid (3), the inner bag (3) extending slowly through the spout (15) to the inner cover strip (7),
A fluid container characterized by being sealed from the inside in an annular region (18) that surrounds 5). 2. Outer cover strips (5), on either side of which extend straight from the outer edges (4) (9) (10) (26) of the lid (3) to approximately the center of the lid (3). Having two parallel cut lines (8) and thereby tabs at the outer edges (4) (26), the outer cover strip (5) having cut lines (8)
Bound to the inner cover strip (7) along at least two parallel seams (19) running near the outer side of the inner cover strip (7) and the inner cover strip (7) by the outer edge seam (20). Container according to claim (1), characterized in that it is welded to the outer edge (4) of the side wall (2). 3. The lid (3) is characterized in that a sealing area (14) between the lid (3) and the inner bag (13) is provided substantially on the lid (3). Alternatively, the container according to item (2). 4. The bottom and lid (3) are flat and circular, or polygonal, and are each sealed to a fold edge (4) at the appropriate end of the far cylindrical side wall (2). The container according to any one of claims (1) to (3), which is characterized. 5. A recess (25) is provided in an area of the cylindrical side wall (2) below the pouring edge (26) of the inner cover strip (7),
Moreover, the tab (6) is welded by the spot welding (24).
The container according to any one of claims (1) to (4), characterized in that the container is attached to the recess (25). 6. A curved cutting line (11) is provided at the inner end of the outer cover strip (5) between the free ends of the parallel cutting lines (8), the outer cover strip (5) being provided. The container according to any one of claims (1) to (5), characterized in that it is adapted to hold it when it is flipped and lifted.