JPS60172650A - Drink 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 <Industrial Application Field> The present invention relates to a method of manufacturing a beverage container. More specifically, the present invention is suitable for a simple manufacturing method of a container whose main constituent material is paper (hereinafter referred to as a "paper container"), which is suitable for storing carbonated beverages as an inner material.

<Conventional example and its problems> As we all know, beverages such as alcohol, milk, and jeez.

Today, it is commercially available in paper XM8 containers. Which paper containers are superior to glass B containers, metal containers, Plus Deck containers, etc. in terms of being inexpensive and easy to dispose of by incineration or the like.

On the other hand, carbonated drinks such as beer and cola are currently sold in glass, metal, or plastic 4Qy containers, and carbonated drinks containing paper BGA do not exist.

There are two reasons for this: one, carbonated beverage containers require extremely high impermeability to carbon dioxide;
The second reason is that conventional paper containers for sake, milk, juice, etc. do not meet this requirement, and the second reason is that the internal pressure (2.5 k at 20 , im2 or more, normal baro OkjJ/CTn2
However, conventional paper containers do not have the strength to withstand this internal pressure.

This first problem can be solved by forming a relatively thick carbon dioxide-impermeable fat film on the inner surface of the device, but
The second problem is a serious one. In other words, when molding a container using paper as the main constituent material, it is impossible to glue the papers together.

Fractures due to internal pressure mainly occur in this bone-attached area.

Unable to deal with this issue, the applicant first filed a patent application filed in 1983.
-170712,! I', :r Gansho 58-17071
No. 3, Japanese Patent Application No. 182829/1982, Japanese Patent Application No. 182829, Japanese Patent Application No. 182829, Japanese Patent Application No.
Through four patent applications, No. 198572, we proposed a paper container suitable for charcoal-treated beverages.

These paper containers are shown, for example, in the front view in Figure 1 and in the
As shown in the cross-sectional view of the figure, two composite molded products C,
D, this composite molded product C1D consists of a substantially hemispherical container body (C1) (Dl), and a flange part (C2) (1) 2) connected to this opening and folded back to the outside,
One of them is a discharge port (40) inserted and glued from the inside.
have.

The bonded molds C and D have an outer layer (10) of paperboard or a laminate containing paperboard, and an inner layer (20) of a carbon dioxide-impermeable and heatsolable plastic sheet, a composite Flange parts of molded products C and D (C2) (D2
) are stacked on top of each other and thermally fused by spin welding or the like.

Although the four patent applications listed above differ in terms of the method of forming the outer layer (10), they have a flange portion that protrudes to the outside, and the flange portions are “b” pressed together. The fact that they are joined by heat fusion is the same in all patent applications.Therefore, these beverage containers occupy a large volume of the entire container θ) compared to the size of the container body. Have a problem (again.

By the way, the peeling of the adhesive part due to internal pressure is more likely to occur as shown in Fig. 3 (+) l 0 than when both are joined together as shown in Fig. 2 or its partially enlarged view (Fig. 6 (21 (7)). .

There is more friction (・σ) when the envelope is pasted.

<Purpose of the Invention> Accordingly, one object of the present invention is to provide a carbonated beverage container which eliminates this sideward projecting flange portion and which is more difficult to peel off at the joint than in the past. 4.14> In other words, the present invention comprises: an outer layer formed of a paperboard or a laminate containing the paperboard molded into a substantially hemispherical shape; And connect it to the open part of this almost hemispherical part.

Plastil comb 1, which holds the flange part of the Nissho letter, which is molded so as to maintain almost the same diameter as the diameter of this opening.
The fissure inner layer body and the inner layer body's approximately hemispherical partial force;
ii Two approximately hemispheres 4A and B, which are adhered so as to be in close contact with each other and have a discharge port provided at L and L6; The flange portion of shell B is inserted into the flange portion of shell A, and the flange portion of shell B is inserted into the flange portion of shell A, and heated. This beverage container is characterized by being joined by fusing.

<Explanation of Examples> The present invention will be explained below with reference to one drawing.

The outer layer according to the invention
- Consists of 4 pieces (hereinafter referred to as "paperboard materials"). σ) Paperboard material C is ordinary coated ball, Manila ball,
Special paperboard, etc. 1 Any ordinary paperboard may be used, including those laminated with various plastic films such as polyethylene and polypropylene to impart water resistance to the edges thereof, and plastic-mixed paper.

There are two methods for forming this paperboard material into a substantially hemispherical shape.

One of them is press molding (compression molding).
In this case, for adhesion to the inner layer body (20), it is preferable to apply a thermal adhesive to the inner surface of the inner layer after molding-4J or after. If this adhesive application is done before molding, the paperboard material is flat.

Roll Coat I, Gravure Coat, Suff'J-n-r
- Can be applied using methods such as In addition, if the adhesive is to be applied after press formation, the paperboard material has a substantially hemispherical shape, so it can be applied by a method such as curtain flow coating. For example, adhesives that exhibit thermal adhesive properties at about 100'C can be used, such as vinyl chloride-vinyl acetate copolymer, ethylene-vinyl acetate copolymer, acrylic, etc.

! F. Another method is to punch out this temporary turtle material I:-1 into a suitable shape and form it into a blank, and then mold this blank into a 111i hemisphere jlIM. In this case, the inner surface of the paperboard must be coated with a heat-adhesive adhesive before forming the paperboard. As this adhesive, the same adhesives as in the case of press molding (vinyl chloride-vinyl acetate copolymer system, ethylene-vinyl acetate copolymer system, acrylic system, etc.) can be used, and roll coating and gravure coating.

It can be applied using methods such as screen coating.

As for the shape of blanks (old blanks), the shape shown in Fig. 4 1al can be used.

That is, this blank (111 is the bottom paper piece 02
) and side paper strips (13) connected to this bottom paper strip and separated from each other by score lines 141.

The length of this side paper piece (13), that is, the score line (1
4) The length of the bottom paper piece (12) and the side paper piece (1
3) It is desirable that the length is 1/4 to 9/2o of the diameter d of the combined part, and when #<1/4d, the molded product obtained will be hemispherical. 〉9/20 (1st Togi d, molding is in trouble.

In addition, it is desirable that the number of side paper pieces t13t o), that is, the number of cut lines (1 1), satisfies 12≦n≦16, and if +1<12, the finished product will not become hemispherical. (,n) If it is 16, molding becomes difficult.

The molding of this blank (old) is performed simultaneously with the molding of the inner layer body (20).

That is, as shown in the cross-sectional view of FIG. 5(a), this blank (11) is inserted into a mold IJ1) such as a mold of a vacuum forming machine with the adhesive layer cut inside, and is Preform into a roughly hemispherical shape.

At this time, the mold (31) has the same inner shape as the outer shape of the substantially hemispherical shell A- or B, that is, this inner shape includes a substantially hemispherical portion X and an opening of the hemispherical portion X. It consists of a cylindrical part y that forms an extension of this hemispherical part X and has a diameter that is almost the same as that of the first part.

In addition, here, approximately hemispherical shape or approximately hemisphere is
4q2 hemispherical or slightly less hemispherical
As can be seen from the cut +/j diagram of the beverage container in Figure 8, in order for this drink f + container t51]) to be a true sphere, the outer layer body (10) must be a complete hemisphere. The hemisphere must be made smaller by the amount of the joining part (9). However, the 311 is also smaller than the hemispherical type.

Further, the 5 cylindrical portion y is the clamp portion (82) (B
2), which has a diameter that is almost the same as the diameter of the opening of the approximately hemispherical portion X0'; The diameter needs to be slightly different depending on when molding. That is, since the flange portion (B2) of the approximately hemispherical shell B is temporarily mounted by being inserted into the flange portion (A2) of the approximately hemispherical shell, the approximately hemispherical dB
The diameter of the flange portion (B2) is smaller than the diameter of the flange portion (A2) to the approximately hemispherical shell by the thickness of the plastic sheet (21) of the inner layer body Q01 of the approximately hemispherical shell N.

The pre-flffi molding of this outer layer body (10) can be done by molding it into a shape close to the desired substantially hemispherical shape, and it is not necessary to mold it into the same shape. Also, this preview υtff Narashi.

Blanks (11) may be done at the same time as q2 (44i people to 31F), or insert 1) uj line to IJ and this k + c (31+).

After this, as shown in FIG. 4 1al, the inner layer +2 (+1
Vacuum-formable plastic sea +-1, which is the material of
! l) Clamp (32I) and hold the heater (33)
Heat the entire surface of the sweat and place the plastic sheet 12I on the top of the blank (11) and mold 13+1) and place the mold (3I
) vacuum suction hole (circle).

Instead of suctioning from the mold (31) side, you can apply one pressure from the plastic sheet + 21) Ill. The material of this plastic sheet +2]) will be described later.

Figure 6 shows the state immediately after the plastic sheet (21) has been heated, mounted on the mold 131), and vacuum-formed in this way, and is a plastic notebook t2].
) At the same time as the vacuum forming of the paperboard blank (old), the paperboard blank (old) is closely molded on the outside of the plastic sheet (1-(2)) in accordance with t,'+ll. Molded plastic seam 1
The adhesive applied to the inner surface of the blank (2I) is activated by the heat pressure during molding, and the adhesive applied to the inner surface of the blank (2I) is thereby bonded and integrated. During preforming and vacuum forming, the section paper piece (I3) is separated from the adjacent 1st section paper piece (13) by Jl [
However, due to the heat pressure during vacuum forming, the activated adhesive in the blank 121) adheres to the blank 121).

In this way, the inner layer body (20) and the outer layer body (10) are molded at the same time, and then the paring around the plastic sheet 12++ is removed to obtain approximately hemispherical shells A and B.

Fig. 4 (I)) shows another example of the blank fl I+, in which the first paper piece (I3) is provided not by the cut #t14+ but in the middle of the cut line 04) and the cut line t141. They are distinguished from each other by a small connecting paper strip (15) shown in Figure 1.

The thin and broken line indicates the fold line (161 (171). Except for the small piece of paper (15) for connection provided in the middle of the cut line 1141, this blank is the same as the blank in Fig. 4 fa). The same applies to preforming and vacuum forming.

This connecting small paper piece (15) is formed when this blank (old) is molded and the side paper pieces (I3) overlap each other.

If these side paper pieces (15) are too far apart or too close together,
This is to prevent overfitting, and a cross-sectional view of the preforming is shown in FIG. 5 (1). In addition, the cross-sectional view during vacuum forming was taken from Ministry of Science and Technology.

Description of inner layer body (20) The inner layer body (20) is vacuum formed from a plastic sheet tz++.

It is molded by drawing forming such as pressure forming or Buns forming.

Such a plastic sheet (21) is a polyester resin notebook. polyvinylidene chloride resin sheet,
Polyacrylic 11 lnitrile 1 resin sheet, polycarbonate sheet, nylon sheet, vinylon sheet, or a combination of these sheets laminated to a thickness of 300 to 2
000 micron charcoal gas impermeable sheet can be used.

When the outer layer (10) is made of a paperboard blank (]I1, it is preferable to mold the inner layer (20) at the same time as the outer layer (10), as described in 42 above.

When the outer layer body (10) is formed by pressing paperboard AA 11, the inner layer body (20
) is drawn and formed, and then the adhesive on the inner surface of the outer layer body (10) is activated by heat to bond them together. Also,
The outer layer body (10) is placed in a mold for vacuum forming, and the outer layer body (10) is molded with −1fli IjIq and I1 to form a plastic sheet 1·L21+ t tffl , and at the same time, the inner layer body (20) and It is also possible to attach the outer layer body (10).

In either case, the shape of the inner layer body (20) is the same,
Approximately hemispherical portions (A1) (B1), and cylindrical flange portions (A2) (B2) connected to the approximately hemispherical portions (A1) (B1) and having approximately the same diameter.
It consists of The diameters of the flange portions (A2) (B2) must be different between the approximately hemispherical shell dA and the approximately hemispherical shell B-'C by the thickness of the sheet.

Explanation of the outlet (before the outlet) The outlet t<101 is for discharging or discharging and injecting the contents, and is made of injection-produced composite 11I steel material, and has approximately hemispherical shells N and 13. It is provided on one side.

437 [a] shows a cross-sectional view of the approximately hemispherical shell provided with this discharge port t401, and FIG. 7 (1) shows the discharge port LIQ
1 shows a cross-sectional view of a substantially hemispherical shell B without I. In addition, in FIG. 7(a) Ll)) and FIG. 8, the incision line (I4) in the blank tllllVC is omitted.

A discharge port (rlol) punches a hole at the bottom into a roughly hemispherical shell.

Insert the inner fql into this hole, and insert the inner layer body (20) and vice!
It is preferably made of the same plastic material as the inner layer body (20j). This also applies when the discharge port (, fC1+) is provided in the substantially hemispherical shell 13.

Description of Beverage Container (30) The flange portion (B2) of the approximately hemispherical shell B thus obtained is inserted into the interior K (71′i) of the flange portion (N2) of the approximately hemispherical shell N.
People, heat M'l'J! By attaching and joining, a beverage container (1 liter) of the present invention can be obtained.

Methods for thermally welding B to this approximately hemispherical shell at the flange portion include a rotational friction thermal welding method (spinwell 1-method), an ultrasonic welding method, and a high-frequency welding method.

The P1-Seal method can be used, but the spin weld method is advantageous.

Figure 8 thus shows a) a paper or plastic band (10
) are wrapped, glued and reinforced, and the discharge port vlO)
Although caps tliO1' and ff are attached to IAa-
is a front view.

Effects of the Invention As can be seen from FIG.
The internal pressure of the carbonated drink bottle 1, which has 1 full sphere or 1118 perfect spheres, can minimize the force exerted on the container wall.

(a) Since the side paper pieces t131i have a double structure in which they are glued together, destruction will not occur due to the internal pressure of the carbonated beverage content.

(b) The flange part does not protrude laterally.

'j2? Application No. 58-170712, patent application No. 58-17
No. 0713, Japanese Patent Application No. 182829-1982, Japanese Patent Application No. 1983
-It takes up less space than the container described in No. 198572,
Moreover, the joints are more difficult to break.

It has this effect.

[Brief explanation of drawings]

Figures 1 and 2 are a front view and a sectional view of the conventional example, and Figure 6 (a
) is the joint part? A partially enlarged view of the explanation. Fig. 3 (11)] 1 is an explanatory diagram for explaining the shape of the seal paste, Fig. 4 (a) ibl is a plan view of the blank, Fig. 5
Figure [a) (1]) and Figure 6 are cross-sectional views for explaining the molding process. Fig. 7 (al +1u11 is a cross-sectional view of the approximately hemispherical shell and B, Fig. 8 is a cross-sectional view of the beverage fls.) 10) Outer 1 unit old) Blanks t12+...Bottom paper piece +131... side Part paper piece (I4)...notch 1 gland 115)・Small connection piece f161 +17)・
Bending line (20)・Inner layer body (21j・Plastic sheet C3
11・Type (32i・Clamp (, +31 heater c+-1)・・Vacuum suction hole (4
01・Discharge+] (50+・・Beverage container 11i0 Toganop (70)・Band patent issue 1 Toppan Printing Co., Ltd. Representative Kazuo Suzuki Figure 4 (^) 11 1° x 4 Figure (b) 1 Figure 5 ( . 3 +1 ” 5th r 7

Claims (1)

[Scope of Claims] (1) An outer layer body consisting of a substantially hemispherical paperboard or a laminate containing paperboard. The approximately hemispherical part molded to tightly fit on the inner surface of this outer layer and the opening of this approximately hemispherical part are in contact with each other, and the diameter is maintained to be approximately the same as the diameter of this open I part. An inner layer body made of Plasti7Kunt having a molded cylindrical flange portion is adhered such that the substantially hemispherical portion of the inner layer body is closely aligned with the inner surface of the outer layer body, and a discharge [ ] is provided as necessary. Two I3 molded to a diameter such that the inner surface of the flange portion of one of the substantially hemispherical shells and the outer surface of the flange portion of the other substantially hemispherical shell B are sufficiently aligned with each other.
A beverage container characterized in that hemispherical shells A and 13 are inserted into a flange portion of a substantially semispherical shell N, which is a flange portion of a substantially semispherical shell B, and joined by heat fusion. 2) A beverage container characterized in that a reinforcing band is adhered around the joint portion of the substantially hemispherical shells A and B.