JPH0439154Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sterile packaging container for accommodating liquid foods and beverages such as dairy products and fresh drinks.

[Prior Art] In recent years, a method of enclosing sterilized food in a sterilized container has been widely used as a packaging form for long-term preservation of food. For example, as shown in FIGS. 3 and 4, another film (inner bag) is placed inside the base film (outer bag) 1.
A bag-like sealed container (sterile packaging container) 5 is constructed by stacking two package films 3 which are made by stacking two package films 2 and sealing the peripheral edges 4. A cylindrical spout 6 is provided in a part of the package film 3. attachment,
A method of aseptically filling cream, juice, etc. into an aseptic packaging container having a spout with a cap 7 at the outer end of the spout 6 using an aseptic filling machine has been known for some time (Utility Model No. 57). -117341).

However, even if the cap 7 is installed around the spout of a sterile packaging container with a spout, it is exposed to the atmosphere and will inevitably become contaminated with bacteria. Inside, it is necessary to sterilize the spout part of the aseptic packaging container with hydrochloric acid water mist, and then fill the material from the filling port of the aseptic filling machine, and after filling, the spout must be sealed with a cap, etc. Therefore, a large sterile room is required.

``Problems that the invention aims to solve'' This invention enables filling under sterile conditions with a simple device without using a sterile room, and can also easily seal the spout. This is what we are trying to do.

[Means for Solving the Problems] The present invention forms an annular fitting part on the peripheral edge of the spout opening on the back side of the attachment part of the spout to the container, and
A sterile packaging container having a spout is integrally provided on the back side of the mounting portion with a fitting locking portion that fits and locks the fitting portion, and the cover covers the spout. After being sterilized with gamma rays to make it sterile,
The lower end of the filling head of the filling machine is brought into close contact with the upper end of the spout, and then the inside of the spout above the cover is sterilized with steam. After sterilization, the steam is discharged, and then the cover is opened.
Fill the contents without the cover blocking the spout,
After the filling operation is completed, the cover piece is pushed up from the back side of the spout attachment part and fitted with the spout bottom fitting and locking part to close the spout of the sterile packaging container. Of course, after that, cleaning the periphery of the spout and fitting the cap are performed as appropriate.

[Function] In the sterile packaging container equipped with the pouring spout according to the present invention, the cover functions to maintain the inside of the container in a sterile state after sterilization with gamma rays.

[Example] Fig. 1 is a cross-sectional view of a spout for a sterile packaging container with the cover opened according to the present invention, and Fig. 2 is a cross-sectional view similar to Fig. 1 illustrating the operation of closing the cover after containing the contents. Figure.

As shown in FIGS. 1 and 2, the sterile packaging container 5 according to the present invention is formed by overlapping an outer bag 1 (e.g., cast-density polyethylene; MDPE) and an inner bag 2 (e.g., low-density polyethylene; LDPE). A cylindrical spout 9 (e.g., made of ethylene vinyl acetate copolymer; EVA) is inserted from the inside into a bag-like container 5 formed by thermally bonding the peripheral edge 4 of the packaged film 3, and the packaged film is sealed at the lower peripheral flange 9a. It is fixed by joining to 3. Then, an annular fitting recess 9b is formed in the spout opening periphery 9a on the back surface of the lower peripheral flange, which is the attachment part of the spout 9 to the container 5, and a fitting that fits and locks with the fitting recess 9b is formed. A cover piece 10 having a locking protrusion 10a is integrally provided on the back surface of the attachment part via a hinge 11.

After the aseptic packaging container with the spout 9 attached as shown in FIG. Close the bottom end of the filling head, then steam sterilize the inside of the spout above the cover, exhaust the steam after sterilization, then open the cover and pour out the contents without the cover blocking the spout. After the filling operation is completed, as shown in FIG. 2, push up the cover 10 supported by the hinge 11 by the push-up table 12 from the bottom of the container, and push the fitting convex edge 10a into the fitting on the bottom of the spout. By fitting into the mating and locking recess 9b, the spout of the sterile packaging container is closed and the sterility of the container is maintained. After that, cleaning the periphery of the spout and fitting the cap can be carried out at an appropriate location.

[Effects of the invention] With conventional aseptic packaging containers, it was necessary to sterilize the area around the spout, remove the cap, and install it all in a sterile room, which required a large sterile room. According to the method, after sterilizing the spout with gamma rays with the cover blocking the spout, the lower end of the filling head of the filling machine is brought into close contact with the upper end of the spout, and then the inside of the spout above the cover is sealed. After sterilization, the steam is discharged, the cover is opened, and the contents are filled without the cover blocking the spout, so there is no need for a sterile room. After that, close the cover, steam sterilize the inside of the spout above the cover, and discharge the filling that has adhered to the inside of the spout.
Next, by covering the top of the spout with a cap, the interior of the spout can be kept sterile.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the spout for a sterile packaging container according to the present invention before the contents are accommodated, Fig. 2 is a sectional view similar to Fig. 1 illustrating the operation of closing the spout after accommodating the contents, and Fig. 3. 4 is a cross-sectional view of a conventional aseptic packaging container with a spout, and FIG. 4 is a cross-sectional view of a conventional spout. 3...Package film, 9...Spout spout, 9
a... lower peripheral edge of opening, 9b... annular fitting recess, 1
0... Cover piece, 10a... Fitting convex edge portion, 11... Hinge portion, 12... Push-up base.

Claims (1)

[Scope of utility model registration request] An annular fitting part is formed at the lower peripheral edge of the spout opening on the back side of the mounting part of the spout having a closing lid on the top, and a fitting locking part is formed to fit and lock with the fitting part. A spout for a sterile packaging container, characterized in that a cover piece is integrally provided on the back surface of the attachment part via a hinge.