JP2579701Y2 - Heat-resistant spout for bags with spout - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug for a bag-in-box used for fruit juice drinks, alcoholic beverages, sauces, sauces and liquid seasonings, and more specifically, can be filled at a high temperature of 70 ° C. or more. The present invention relates to a heat-resistant spout for a bag with a spout used for a simple bag-in-box and the like.

[0002]

2. Description of the Related Art Recently, a bag-in-box,
A composite container in which a plastic bag-like container is housed in an outer box has been widely used for liquid foods such as fruit juice drinks, alcoholic beverages, liquid seasonings, oolong tea, and water. The plastic bag-shaped container filled with the contents and stored in the outer box is provided with a stopper composed of a stopper body and a lid member for filling and discharging the contents, As a representative example, as shown in FIG.
The base ring (11) at the lower end of the peripheral wall (111) of the spout (0).
The inner surface of the peripheral film (310) of the bag-shaped container is heat-sealed on the upper surface of (3), the lid member (120) is engaged with the engaging portion at the upper end of the outlet wall of the plug body, and the top plate ( 123)
The back was pressed against the inside of the upper end of the spout peripheral wall of the plug to seal the bag-like container. A soft elastomer made of a compound of synthetic rubber and EVA resin is used for the material of the lid member, and a polyolefin such as polyethylene is used for the plug body.

[0003]

However, since the synthetic rubber made of styrene-butadiene-styrene synthetic rubber as the material of the lid member has low heat resistance,
It is difficult to fill the contents at 70 ° C or higher,
There was a problem that the filling could only be performed up to a filling temperature of about 40 ° C., and the contents were limited. Therefore, there is a material using a polyester elastomer having good heat resistance, but this material is not as flexible as synthetic rubber, the fitting force with the plug body becomes strong, and the lid member on the filling machine is used. There is a problem that the load at the time of desorption is large and the suitability of the filling machine is lacking. There is also a material using a material having good heat resistance such as high-density polyethylene or nylon. However, since this material is hard and prevents liquid leakage, as shown in FIG. In some cases, a lid member (220) having an inner ring (224) fitted into the upper end inside is used. For this reason, the fitting force was strong, and there was a problem in mechanical suitability on a filling machine. The present invention provides a heat-resistant port for a bag with a spout that has good mechanical suitability for attaching and detaching a lid member to and from a spout on a filling machine, and is used for a bag-in-box capable of filling contents at a high temperature. A stopper is provided.

[0004]

According to the present invention, as shown in FIG.
A plug body (110) having a bag-shaped container (300) and a pedestal ring (113) for melting at the lower end;
Occlusal part (122) that engages with the occlusal part of the spout outlet wall
(12) having a lid peripheral wall (121) having the inside inside and a top plate (123) pressed against the inside of the upper end of the spout peripheral wall.
0), wherein the material of the lid member is made of a styrene-ethylene-butylene-styrene-based thermoplastic elastomer, and the heat-resistant port for a bag with a plug such as a bag-in-box. Stopper (100).

The above-mentioned plug body is formed by injection molding using a polyolefin such as polyethylene.

[0006] The lid member is also formed by an injection molding method.

The engaging portion provided on the peripheral wall of the spout or the lid is formed by a convex projection or a concave groove.

[0008] The innermost film of the bag-like container is
It is made of a material that can be thermally fused with the plug body.

[0009]

In order to fill the contents of the bag-in-box equipped with the spout of the present invention, when the bag-like container is opened on the filling machine, the material of the lid member according to the present invention is styrene-based.
Ethylene-butylene-styrene-based thermoplastic elastomer is used, so it has appropriate hardness and flexibility even at room temperature, and has good mechanical suitability on a filling machine, such as an excessive load when opening the lid. There are no damaging problems.

[0010] Further, after filling the heated content of 70 ° C or more, when closing the lid member on the plug body on the filling machine,
Since the heat resistance of the lid member according to the present invention is good, it has appropriate hardness and flexibility around the filling temperature, and the mechanical suitability such that the load at the time of closing the lid is too weak or too strong. There is no problem that impairs.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an outer peripheral wall (111) shown in FIG. The plug body (110) having the component (113) was produced by an injection molding method using linear low-density polyethylene. Separately from this, a lid peripheral wall (121) having an engagement portion (122) formed with a concave groove engaging with an engagement portion on the outer side of the upper end of the spout peripheral wall of the plug body, and an upper end of the spout peripheral wall A lid member (120) having a top plate (123) pressed against the inside and having a detachable flange (125) on the outer periphery of the top plate is attached to a styrene-ethylene / butylene-styrene thermoplastic elastomer (A (Shore hardness: 87, heat resistance: 130 ° C.) using an injection molding method. Further, the bag container was produced in a double bag structure of a laminated film having a low density polyethylene film / aluminum-deposited nylon film / linear low density polyethylene film configuration and a linear low density polyethylene film. next,
The spout of the plug body according to the present example is inserted into the pouring opening of the prepared double bag and protrudes, and the linear low-density polyethylene film on the inner surface of the double bag is heat-fused with the upper surface of the base ring. Then, the lid member according to the present embodiment was plugged and attached to the plug body to produce a bag-shaped container.

In order to fill the contents of the produced bag-like container with a filling machine at a high temperature, first, the detachable jig of the filling machine is used to hold the detachable flange of the lid member and the lid is opened, and the liquid seasoning is filled at 75 ° C. After that, the lid member was again stoppered with a demounting jig, engaged with the spout, and the bag-like container was sealed. In the opening and closing of the lid in the step of filling the contents, no problem in mechanical suitability caused by the lid member occurred at all.

Next, a bag-like container filled with contents and sealed is
After storing in an outer box and producing a bag-in-box and passing through a normal distribution process, the outer box was opened and leakage of contents from the mouth of the bag-like container was examined, but no liquid leakage was observed. Was. Furthermore, the spout of the bag container was pulled out from the opening of the outer box, and the lid member was opened or closed, and it was seen.
There was no problem that the engagement between the lid member and the spout was too hard or too weak.

[0014]

[Effect of the Invention] The bag-in-box using the heat-resistant spout of the present invention has good suitability for the filling machine when the lid member of the spout of the bag container is attached to and detached from the filling machine, and is 70 ° C or more. Since high-temperature filling is possible, it can be used for contents such as sauces, sauces, and seasonings which could not be applied in the conventional bag-in-box.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of a representative example of a plug for a bag-in-box.

FIG. 2 is a partial sectional view of another example of a bag-in-box plug.

[Explanation of symbols]

 100, 200 ... Plug 110, 210 ... Plug body 111, 211 ... Outlet peripheral wall 112, 122, 212, 222 ... Occlusion part 113, 213 ... Base ring 120, 220 ... Lid member 121, 221: Lid peripheral wall 123, 223: Top plate 125, 225: Removable flange 224: Inner ring 300: Bag-shaped container 310: Peripheral film 311: Opening

Claims (1)

(57) [Scope of request for utility model registration] 1. A spout body having an engagement portion on the outer side of the upper end of a spout peripheral wall and a base ring at the lower end having a bag-shaped container and a heat-melting base, and an occlusion portion engaging with the occlusion portion of the spout outlet peripheral wall. A stopper comprising a lid member having an inner peripheral wall and a top plate which is in pressure contact with the upper end of the spout peripheral wall, wherein the material of the lid member is a styrene-ethylene-butylene-styrene-based thermoplastic elastomer. A heat-resistant stopper for a bag with a stopper, comprising: