JPH0420748Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Purpose of the Invention [Field of Industrial Application] The present invention relates to a carton container with a spout forming mechanism used to contain liquids such as milk and juice.

[Prior Art] Gebelt top paper containers, which have traditionally been used for packaging milk, juice, etc., require the joints at the top to be separated in order to form an opening before use, which requires considerable effort. In addition, there were cases in which the opening was not formed properly. For this reason, it has become common to attach a separate spout to paper containers. However, when the contents are relatively low-priced products, packaging costs are limited, and it is not economical to provide a separate pouring spout.

In order to solve these problems, the present applicant has already filed Utility Application No. 60-200166 (Utility Model Application No. 62-200166).
108224), a spout 19 surrounded by a half-cut line 16' is formed from the inside of the paper container 1 itself, as shown in FIGS. 7a and 7b, without providing a separate spout. Then, a pull tab piece 6' made of a bell-shaped film is adhered to the front surface of the container, and when this is peeled off, the part surrounded by the back half cutting line 16' is removed from the container 1 together with the pull tab piece 6'. has filed an application for a paper container with an opening mechanism configured to open the spout 19.

However, in the above-mentioned idea,
While peeling off the adhesive between the pull tab piece 6' and the container surface by pinching the knob 5'', remove the opening part 19a surrounded by the cut line 16' from the container surface while adhering it to the pull tab piece 6'. When separating to form the opening 19, that is, when peeling off the pull tab piece 6' from the container surface, the material made of paper with polyethylene film laminated on both sides is rigid and does not buckle or bend. When the pull tab piece 6' is adhered to the container surface by hot stamping, when the periphery is adhered, air bubbles flow into the center and remain.
Incomplete adhesion may cause the upper end of the opening portion 19 to separate from the pull tab piece 6', resulting in the inconvenience that the opening portion 19 may not open reliably.

[Problems to be solved by the invention] In view of the above-mentioned problems, the present invention has a simple structure without providing a separate spout in the container.
A simple pouring spout that is easy to manufacture and low cost, yet has a reliable seal, is easy to open, and can form a good pouring spout without dripping. The present invention aims to provide a paper container with an outlet.

(b) Structure of the invention [Means for solving the problem] In the present invention, an opening forming score line is provided from the outer surface of the container, and the opening forming score line is covered from the inner surface of the container. A composite material made of laminated paper, aluminum foil, polyethylene film, etc. is applied, and a spout is bored in the material corresponding to the central part of the container material surrounded by the opening score line;
A score line is made in the composite material along a closed triangular part that surrounds the opening score line from the outer periphery, while a central part surrounding the spout and the outer periphery of the opening forming score line part are made on the inner surface of the container. By thermally bonding,
We have developed a paper container with a spout that is low cost, easy to open, and does not cause dripping.

[Function] Since the structure is as described above, a composite material containing paper, aluminum foil, etc. is heat-welded to the liquid contact surface of the container material corresponding to the spout and the area around the opening forming cut line. By firmly sealing the inside and outside of the container, and by raising the grip of the container material formed by the opening forming cut line and pulling the gutter forming part outward, the part can be folded from the folding line. When it is bent and rises from the container material, it rises along with the spout part of the composite material that is thermally bonded to it.
A spout is formed in the center of the composite material that seals the opening forming cut line part, and the other heat welded parts will peel off from each other, so we cut both sleeves upward from the folded line for forming the gutter part. By bending it, a gutter portion that follows the spout can be formed.

[Example] Fig. 1 is a plan view of the cut line portion forming the opening of the spout of the paper container of the present invention, and Fig. 2 is a plan view of a composite material that covers and seals the portion from the liquid contact side of the container material. ,
Figure 3 shows the welded part in Figure 1.
FIG. 4 is a cross-sectional view taken along a line, and shows the state of stamping when the composite material is welded to the back surface of the container material, cut and glued, and FIG. 5 is a cross-sectional view of the paper container according to the present invention. FIGS. 6a and 6b are perspective views of the opening and formed spout, and FIGS. 6a and 6b are perspective views of the entire paper container of the present invention, in which a shows the state before opening and b shows the opened state.

The paper container 1 in the present invention is shown in FIG. 3 or 4.
As shown in the figure, it is formed of a material 4 made by laminating polyethylene films 3, 3 on the front and back sides of a paper 2, and the opening forming piece is attached to the container material 4 as shown in FIG. A full cut line 8 is made so as to surround the continuous trapezoidal spout gutter forming piece 6, but leave a folding line 7 in the center of the bottom of the trapezoidal piece 6, and
Both lower ends 5', 5' of the knob 5 and the trapezoidal bottom folding line 7
Folding lines 9, 9 connecting the respective ends 7', 7' are formed so as to sandwich the gutter forming bottom 6a. In addition, 6b is a gutter forming side wall.

Furthermore, if necessary, a folding line 10 connecting the lower ends 5', 5' of the knob 5 may be provided to improve usability as will be described later. As shown in Fig. 3, 9 of the above folding lines are formed by making a half-cut line on the material from the outside of the container, and the other folding lines are preferably formed by making half-cut lines from the inside of the container, but for the purpose of reducing processing steps. ,
Even if it is applied on the same side at the same time as the processing of the folding line 9, a certain effect can be obtained.

A member indicated by a dotted line formed in a triangular shape surrounding the periphery of the opening forming cut line 8 and in a vertically elongated elliptical shape at the center of the opening forming part is welded to the inside of the container, that is, to the liquid contact surface, and is welded to the liquid contact surface. Composite material 14 that seals the material from the filling liquid, the dotted line indicates the score line 1 for the same material.
5 and 16, the details of which will be explained with reference to FIGS. 2 and 3. Fig. 2 shows a composite material 14 that covers the opening from the inside of the container and its adhesion position. The adhesive film 12 is laminated with a thermal adhesive material 13 on the back surface, and is formed into a substantially triangular shape.
Its periphery extends to the outer periphery of the entire score line 8 on the container material 4, and is thermally welded around it 17 to the back surface of the material 5, that is, the surface in contact with the liquid, thereby cutting the opening forming portion cut provided in the material 4. The line 8 is completely sealed against the filling liquid. Further, the composite material 14 is
The spout 19 surrounded by the score line 16
And, in the vicinity thereof, that is, in the area corresponding to the bottom surface 6a of the gutter molded piece 6 formed on the material 4, it is entirely thermally welded to the material 4, and here, the score line made in the composite material 14 is The material 4 is configured to seal the filling liquid against the material 16. FIG. 3 is a sectional view of the opening forming incision line portion, and is a sectional view of the material 4.
, the direction of the opening forming cut line 8 with respect to it, the adhesion state of the composite material 14 thereto, and the mutual positional relationship of the direction of the cut line 16.

FIG. 4 shows the processing state when covering and sealing the opening forming cut line 8 portion of the material 4 with the composite material 14. At that time, the mold is used to cover and seal the composite material 14 with an approximately triangular outer shape and a spout 19. Cutting line 1 for punching in the shape of
It is composed of cutting blades 20a and 20b formed to form 5 and 16, respectively, and a heating plate 21 for thermally welding the composite material 14 to the material 4. The heating plate 21 heats and presses the regions 17 and 18 of the composite material to the material surface, and at the same time the cutting blades 20a and 20b cut only the composite material 14, The cutting blade 20a punches and cuts the composite material 14 into a triangular shape, and the cutting blade 20b forms the cut line 16 for forming the spout 19, and also bonds the triangular member to the container material surface in one step. We are trying to reduce machining man-hours by doing so.

However, the lengths of the cutting blades 20a and 20b are set so that they cut slightly into the material side in order to ensure cutting of the composite material. Of course, at this time, a heat-sealing film (material) is laminated on the side where the composite material is in contact with the four surfaces of the material.

As described above, the gutter forming bottom surface 6 of the material 4
In the region of the composite material 14 corresponding to a, the spout 19 and its portion corresponding to the score line 16 are all thermally welded to prevent leakage of the filling liquid. When opening a container using the opening forming cut line shown in FIG. 1 formed in this way, the composite material 14 is When the unadhered knob 5 is lifted from the material 4 and pulled, the gutter forming piece 6 is bent and raised from the folding line 7, and at that time, the heat between the bottom surface 6a and the composite material 14 is By breaking the adhesive structure by welding, the gutter forming piece 6 is formed into a spout 19 surrounded by a cut line 16.
As the composite material 19a corresponding to the parts is turned as shown in FIG. A gutter-like member is formed by bending and deforming the gutter 6b upward at the bending line 9, and an opening with a spout 19 can be easily formed at the base thereof. At that time, the knob 5
If the folding line 10 is provided at the connecting portion between the gutter forming piece 6 and the gutter forming piece 6, it becomes possible to easily raise the knob portion 5 from the plane of the material 4. Furthermore, the knob 5
A notch may be provided at the upper end of the knob to make it easier for the nail to engage.

Since the spout 19 with the above structure has gutter side walls 6b, 6b formed on both sides thereof, when discharging the filled liquid from the container, it is possible to prevent the liquid from leaking sideways, and also to prevent the liquid from leaking along the outer wall of the container. It is possible to prevent the liquid from dripping.

(C) Effect of the invention In the present invention, since the opening area is constructed as described above, the knob 5 is raised and the gutter forming piece 6 is inserted into the container material as shown in FIG. 5 or 6b. The gutter side wall material 6b, peeled off from the composite material surface.
Not only can anyone easily open the container by simply bending the 6b upward, but it also prevents leaks and drips when dispensing liquid. It is easy to process, and there are no protruding parts or other parts that interfere with transportation, making it easy to process opening forming notches, etc., and reducing costs.Moreover, the filling is completely sealed before opening, so there is no risk of deterioration of the contents. It has special functions and effects that cannot be expected from conventional products.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the cut line portion forming the spout opening of the paper container of the present invention, and FIG. 2 shows the composite material that covers and seals the portion from the liquid contact side and its welded portion. FIG. 3 is a partial sectional view taken along the line - in FIG. 1, FIG. The figures are a perspective view of the opening of the paper container according to the present invention and a formed spout, Figures 6a and b.
1 is an overall perspective view of the paper container of the present invention, in which a shows the state before opening and b shows the open state. FIGS. 7a and 7b are perspective views of the entire known carton container, where a shows the carton before it is opened, and b shows the carton in its open state. 1... paper container, 2... paper, 3... polyethylene film, 4... container material, 5... knob, 6...
... Gutter forming piece, 7, 9 ... Folding line, 8, 16 ... Cut line, 14 ... Composite material, 17, 18 ... Heat sealing surface, 19 ... Outlet, 20a, 20b ... Cut blade,
21...Pressure heating plate.

Claims (1)

[Scope of utility model registration request] A paper container made from a material made of polyethylene film laminated on both sides of paper is made from the outer surface of the container, with a continuous trapezoidal opening cut line with a knob at the top with an open bottom, and from both sides of the lower end of the line. On the line connecting them, partially extend the cut line leaving the center part as a trapezoidal bottom folding line, and fold a line connecting both ends of the trapezoidal bottom folding line and both lower ends of the knob. A composite material made by laminating paper, aluminum foil, polyethylene film, etc. is applied so as to form a curved line and completely cover the opening forming incision line from the inner surface of the container. The trapezoidal bottom is thermally bonded to a portion corresponding to the material surrounded by a closed triangular periphery surrounding the line from the outer periphery and a folding line connecting the trapezoidal bottom folding line and both lower ends of the knob. A paper container with a simple pouring spout in which a spout forming cut line is formed at a central position surrounded by the folding line and both lower ends of the knob.