JPS6068249A - 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 details
＋、Well, suitable for storing carbonated drinks as contents 5
It is suitable for a simple manufacturing method of containers whose main constituent is paper (hereinafter referred to as "paper containers").

<Conventional Example and its Problems> As is well known, drinking spouts for alcoholic beverages, milk, jicose, etc. are now sold commercially in paper containers. This paper container is superior to glass containers, metal containers, plastic containers, etc. in that it is inexpensive and easy to dispose of by incineration or the like.

On the other hand, carbonated drinks such as beer and cola are still sold in glass, metal, or plastic containers, and some carbonated drinks are packed in paper containers. '4!
, yo doesn't exist.

and talent 1. On the one hand, carbonated beverage containers require extremely high carbon sludge impermeability, whereas conventional paper containers such as L2 liquor, milk, and sous The second reason is that the manufactured container is not filled with this filling, and the second reason is that the internal EE (
2.5 ky/ci or more at 2flC, usually 11 to 5 Ok
In contrast, the conventional paper containers described above do not have enough strength to withstand this internal pressure.

The first problem with this can be solved by forming a relatively thick carbonate sludge-impermeable σ) uniform film on the inner surface of the container, but the second problem is serious. So, when molding a container with 1 sheet of paper as the main component, it is unavoidable that the papers will adhere to each other, but damage due to internal pressure will be avoided. This occurs mainly at this bonded part. Therefore, the present invention 1. Well, it solves the drawbacks of the above-mentioned conventional method 1, has sufficient impermeability to carbon dioxide gas, and 1. A paper container with adhesive parts that will not break due to internal pressure! ? 114L manufacturing method and its purpose is to provide:

<Structure of the Invention> That is, a heat-adhesive adhesive is applied to the surface of a laminate containing the present invention II cutting paper or 1 ton cutting paper, and 4゛J cutting and score lines and ruled lines are added.

fal wastepaper bottom paper J4゜(1)) Container bottom paper pieces IC connected, a large number (n (IQ) container side paper j4, separated from each other by score lines)
(c) Container side paper through arc-shaped ruled lines)-1 side i
A large number (n) of flanged paper pieces 1 connected to the ruled line, the outline of the opposite side of which is an arc, the length of the arc-shaped ruled line is y, and the outline of the opposite side is , when the distance between the two is f, x = y + 2π・f/n ・(1) Create a blank consisting of flange paper pieces each having a length less than 1, and mold this blank. At the same time, a suitable lid phase B is fused and bonded to the flange part of a composite molded product A, which is made by adhering vacuum-formed or pressure-formed plastic to its inner surface and flange part. A container, the periphery of the opening of which is formed by a ruled line between the container 1!11 piece of paper and the flange paper piece. This is a 51-container container with a typical composition.

<Description of Examples> Hereinafter, the present invention will be explained using various aspects. Drawing 1. Good shank also illustrates an embodiment of the present invention.

FIG. 1 is a cross-sectional view of the structure of a blank (1) (material A), which is made by applying a thermally adhesive adhesive to the surface of a laminate (11) containing paperboard or paperboard.

Here, the laminate (11) containing paperboard or crimp paperboard is:

llTl always'-) Court ball, Manila ball, '
l? Paperboard F? It is also possible to use ordinary paperboard with a water-resistant Nt coating on the surface (C, various types of plastic films such as polyethylene and polyzolopyrene films). Including laminated paper and plastic mixed paper.

The thermoadhesive adhesive (12) mentioned in the present invention is usually 1oot
The adhesive shows some degree of thermal adhesion.

The convex finish used can also be selected according to the laminate (11) containing paperboard or rlJ paperboard.
The force method can be applied to any of the IC force methods such as roll coating, gravure coating, and screen coating.

Figure 2 is a plan view of the blank (1), with the shape of the figure + (punching row/, r, and notch, fJ (5) and Ht
``1'' line (bending line) (6) is inserted.
In this drawing, the incision line (5)'' is shown as a thick solid line, and the line (f3) I-A is shown as a thin broken line.

The blanks (1) are connected to the (Al container bottom paper piece (2)) and (1) the container bottom paper piece (2), and are separated from each other by a score line (5). Paper strip on the side of the container (
3) (In the figure, 1 is a paper strip of It (:3) and C3 to distinguish between each one)) (32+ (331 scent is marked) fcl Wt line (6) through the paper on the side of the container.'' Place 3
) A large number (111 pieces) of flange paper pieces (4) connected to
(In the figure, each number is 11, and in order to distinguish between pieces of paper (4),
It consists of 411 (42) (numbers 1 to 43!).

Container bottom paper piece (2E+ round, container bottom paper)
The combination of the "+" (2) and the many container side paper pieces (3) is also circular. Also, extension of the cut line (5) 1.
Mako) The center of the t-sized circle passes through the flange paper piece (4)
Determining the outline of - The round line does not pass through the center of the circle. Flange paper piece (4E+) As will be described later, when the hemispherical composite molded product A is molded, a flange is formed around the opening. :, radius of the spherical vessel), +I 'V 2πr ・ (11) n x=2 w (r+f ), x=y+2 yt ・
f/n patl) /l:I′l6-syo5 length X,
Select y and select 1'. Here, 0 is the flange paper piece (4)
number of pieces, X 't, length of the arc on the outside of the flange paper piece (4) (force far from the container side paper H (3)), y l,
Inside side (flange paper strip (4) and container side paper strip (3)
is the length of the arc of the ruled line (6) on the boundary of
is the distance between the inner arc (ruled line (6)) and the outer arc. Note that two of n, x, y, and f can be freely selected, and the other two are determined according to this tv.

Also, the length of the paper strip on the side of the container (3), that is, the length of the J line (5), is J't, so the paper strip on the bottom of the container (2) and the paper on the side of the container (3) are aligned. Part diameter DI)j/
4 to 9/20 length, i.e. -, D > -4
−I] is preferably 0, and when e<1/4Dn, 1. The molded product A obtained from the manufacturing process is difficult to become hemispherical, while (J > 9/20.
In case 1), preforming described below becomes difficult.

In addition, it is desirable that the number of flange paper pieces (4) satisfies 7°C, that is, the number of container side paper pieces (3) 11i, 12≦I]≦16, and [+ (12). 1. It is difficult to form a molded product into a hemispherical shape, and if the molded product is formed into a hemispherical shape, it will become too round and difficult to pre-form.

This blank (1) is inserted into a mold (7) such as a mold of a vacuum forming machine with the adhesive layer (12) inside, and is preformed into the shape of the composite molded product described briefly below. Shape.

The plan view in FIG. 6 (21) and the sectional view in FIG. 6 (1) show the state at this time. 4th ['r, t, Fig. 3 container side paper J・expansion: (Ii (131(,'+3+ and flange paper H(,l I (421f43+) That is, the flange paper strip (April 42) (1: (l'r, ruled line (6), folded outward 1 ftll K, and also this rag) paper strip (40 (421 (43)) do not overlap,
In addition, the final condition is such that there is no gap between 11 and 6 times. On the other hand, Ra 1ri 11 parts i low 1-i' (
311(:ri2+ (3,'(l 't 5 part of it or 1iJi - 'filter container side 1+J paper piece becomes 111. In Figure 4, i, container side paper J''l(,3 It is superimposed on the outside of the force and gives birth to 5 children/, C piece of paper (, ++! evening) shadow line (corresponds to Frankz's incision line (5)) and paper g
(3: (Outside of + (C overlap it) invisible paper C (32
It is indicated by a thicker break A (5) than the outline 11 of 1. All other volumes RH (til 1 copy paper 8 3) are in the same state.

There is no need to worry about this preforming (or not necessarily the final shape) having the same shape as the composite molding.

It is sufficient to mold it into a shape similar to this.

Also, is this preform 5 blanks (1)? This may be done simultaneously with the insertion into the mold (7), or it may be preformed before insertion and then inserted into the mold (7).

After that, as shown in Fig. 5, the vacuum-formable plastic sheet (8) is held in a clamp (9), and the plastic sheet (8) and blank (
1) All sort heating 1~, blanks (1) and molds (7)
At the upper end of the plastic, /-) f8i stacks are suctioned from the vacuum suction hole (71) of (7). Type (7
) side instead of suction from the side, use a plastic sheet (8
) You can also apply 1 F of gas from the side.

Use plastic sea 1-(8) here as j, yo.

Polyester uniform sheet, polyvinyritine chloride (1), polyacrylonitrile (1), polycarbonate sheet, nylon/l-, vinylon sheet, or a combination of these sheets. Charcoal 1519 gas impermeable seal with a diameter of 600-2000μ
- You can use it.

Figure 6: Plastic sheet 1 (8)
The figure shows the state immediately after the plastic sheet (8) has been molded by vacuum suction after being tightly attached to the heating mold (7).
At the same time as vacuum forming, a three-dimensional paper blank (1) having an adhesive layer on the inside is closely molded on the outside of a hub plastic sheet (8) in a mold (7). In other words, the three-dimensional blank m' of one paper + plastic sheet 1-f8) is closely attached to the plastic sheet 1-f8) by the heat pressure during soil molding, and is adhered by the adhesive f121 on the surface of the blank (1), and as shown in Figs. As can be seen, the areas where the container side paper strips (3) overlap each other are also glued together by the heat-activated adhesive (12).

After this, the composite molded product A7, which is to become the container body, is removed from the mold (7) and the surrounding glass sheet (8) is removed. J? - Obtained.

As shown in the front view of FIG. 7, this composite molded product A is a hemispherical or approximately hemispherical container having a flange portion (4) around the opening, and this flange portion (/I) is a blank (1).
The flange paper pieces (4) are folded back in an outward direction, so that they are lined up without turning over each other or creating any gaps between them, and the glass sheet (4) is placed on top of them.
8) is made by laminating layers, so it is completely flat with no unevenness. Also, the radius of this opening r't
″!:, 2πr == n y f is satisfied.

After this composite molded product A is filled with contents as required, a suitable amount of lid material 82 is overlapped and fusion-bonded at the flange portion (/I) to obtain a beverage container.

The lid U'B't may be of any type, but considering the internal pressure due to the carbonated beverage content, this lid material B should also be hemispherical or approximately hemispherical in the same way as for the composite molded product. It is preferable that there be. FIG. 8 shows an example of a molded lid paulownia T3 with an inflow/outlet (20) for the contents into the composite molded product.

This lid material B is shown in FIG. 9 as a sectional view, that is, injection molded J'1. The inflow and outflow of synthetic position 1 [kof201
? , v, from the inside to the bottom of the composite molded product A] 1 piece of heat t
It is attached to the hole in the hole and fused to the glass sheet (8). Preferably, the inlet (20) is made of the same material as the plastic sheet (8).

Figure 10 and 11 The composite molded article A and lid material B obtained in this manner are fused and bonded with the flange portions of (4) facing each other, and a camp (30) is attached thereto, as described in the present invention. You can get beverage containers.

As a method for fusion-bonding both of them at their flange portions, a rotational friction heat fusion method (spin weld method), an ultrasonic weld method, a high frequency weld method, a heat seal method, etc. can be used. According to the inventor's study, the spin weld method was found to be good.

2. If a hemispherical or approximately hemispherical molded product with a flange part is used as the composite molded product A and the lid B, ψ1
1, but in this case, the container obtained is the 10th container.
As shown in the figure, it has a true spherical shape or a nearly true spherical shape, and can minimize stress on the container wall due to the internal pressure of the carbonated beverage content. Note that the container according to the present invention is not limited to this shape.

For example, an oblong sphere as shown in FIGS. 11(a) and (1)) may be used.

<Effects of the Invention> Even if Jt is used, the container of the present invention has a completely flat flange portion with no gap.

The lid material B stacked on top of the "2" is stuck together and there is no gap.
The composite molded product A and the lid material B will not break due to the internal pressure caused by the carbonated beverage content.In addition, since the flange part is completely flat, the lid material 13 can be pressed into the composite molded product using the spin welding method. It is also advantageous when performing fusion bonding.

<Example 1> (1) Basis weight 310? AD37./m2, an ethylene/vinyl acetate copolymer heat-sensitive adhesive, was applied to the back side of a coated ball of AD37./m2 using the Nokuichi coating method. P66 Varnish (manufactured by Toyo Ingi Manufacturing Co., Ltd.) 'rWet 20'! -An” was applied and dried.

(2) Next, punch out this paperboard again using the no-turn cutting die shown in Fig. 2, and as shown in Fig. 6, fold it along the ruled lines and pull up the paper pieces around the container. I made a temporary three-dimensional blank by taming the paper.

(3) Next, this three-dimensional blank was inserted into a hemispherical mold as shown in FIG.

(4) On the other hand, unstretched polyester sheet 5cJO11
(Teijin: C-J) ET) and unstretched polyacrylonitrile sheet 1-500 μm (Mitsui Toatsu: Zekron Sheet) using the Yadry laminating method. Hold the sheet with scissors on the upper side, heat it with a heater at 140C for 10 seconds, stick it tightly to the mold into which the three-dimensional blank has been inserted, and then suction it again.

After forming, the flange part is canted to a certain size,
A composite molded product A shown in the figure, consisting of paper/acrylic nitrile sheet/polyester sheet, was obtained.

(5) On the other hand, after punching out the bottom of the composite molded product obtained in (4) and making certain holes, a polyester resin outflow inlet made by injection molding is made. , and inserted in the manner shown in FIGS. 8 and 9, and fused by the spin weld method to obtain lid material B shown in FIG. 8.

(Gl Next, as shown in Fig. 10, the composite molded product A and the lid tt B k flan 9 parts are faced together, fusion bonded using the spin weld method, and a cap is attached to the inlet and outlet to ensure pressure resistance. A beverage container with good barrier properties was obtained.

The pressure resistance of the resulting container was found to be 5kV''CrrL.
Good results were obtained without deformation or rupture even when an internal pressure of 2 or more was applied.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, FIG. Figure 2 is a cross-sectional view of the blank, Figure 11 is a plan view of the blank, Figure 6 is
a) and tb) Plan view and sectional view when the blank is preformed and inserted into the mold, No. 41
l'i An explanatory diagram to explain the state of the container 1-11 paper piece and the flange paper piece in Figure O, Figure 5 is a sectional view during molding, and Figure 6 1. Fig. 7 is a front view of the composite molded product A obtained by molding, Fig. 8 is a front view of the lid material, Fig. 9 is a sectional view of the lid material, and Fig. 10 is a cross-sectional view of the lid material. FIG. 11 is a front view of a beverage container of another embodiment. (1) Blanks (group...Paperboard or laminate containing paperboard (12) Adhesive (2)...Paper piece at the bottom of the container (3)
) (311C3 (33)... Container side paper piece (4)
(4n (421 (431) 7 runno paper piece or 7 runzo (5)... cut line (6)... ruled line (folding line)
(7) Mold (71)...Vacuum suction hole (8)...Plastic sheet (9)...Clamp (10)...Heater (20)...Outlet/outlet C30+...Camp patent applicant Toppan Printing Co., Ltd. Figure 1) Figure 2 Figure 3 (α) 1 ~, 3q<b) Figure 4 6LA Figure 7A Figure 8 Leap Figure 9 Figure 10 Sakae 1] Figure (α) Figure 11 ( b)

Claims (1)

[Claims] 1) Paperboard or 1. Apply a thermal adhesive to the surface of the laminate, including cutting paper, and perform punching and score lines and creases. (1) A large number (n) of container side paper strips connected to the container bottom paper strip and separated from each other by score lines; Connect to zoh,
A large number (n) of flanged paper pieces whose outline on the opposite side of the ruled line is a circular arc, where the length of the arc-shaped ruled line is ly, the outline of the opposite side is X5, and the distance between the two is f, 2Y -1-2π・f/n...(11) Create a blank consisting of a piece of flange paper having a length of 11, and mold this blank, and mold the inner surface and flange part. Composite molded product A made by vacuum forming or pressure forming and adhering a plastic jet toner.
A container made of suitable lid material B & fusion bonded to the flange part of A container, characterized in that the periphery of the opening is formed by a ruled line between the container side paper piece and the flange paper piece, and the flange paper piece is folded back to the outside to form a flat flange part. beverage container.