JPS62168836A - Sterilizer - 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 (a) Industrial Application Field The present invention relates to a film sterilization device, and more specifically,
The present invention relates to an apparatus for sterilizing a strip-shaped film such as a packaging film used for sterile packaging using sterilizing gas.

(b) Prior art When sterilizing packaging is performed in so-called form-fill packaging, in which a container is formed on a packaging film and an item is filled into the container for packaging, conventionally, as shown in FIG. A sterilizing solution tank α, b was provided in the middle of the feed line of ,, f2, and a hydrogen peroxide solution l was placed in the sterilizing solution tank, and the packaging film f, was passed through the hydrogen peroxide tank to be sterilized. Afterwards, the packaging film is sequentially sent to the heating device C1, the forming device d, and the filling device e to heat the packaging film, form the container, and fill the container with the product. I try to seal it with f2. The problem with such conventional sterilization methods is how to remove hydrogen peroxide adhering to the packaging film after sterilization. For this reason, in the past, after sterilization, heated air was sent to the packaging film to vaporize the hydrogen peroxide, and careful attention was taken to allow sufficient drying time, and the hydrogen peroxide gas was To prevent it from leaking outside, it was discharged from the drying room outdoors via a pipe.

However, this poses a difficult problem because there is a gap through which the packaging film passes into the drying chamber, molding chamber, and filling and sealing chamber.

(c) Problems to be solved by the present invention The problems to be solved by the present invention are to completely eliminate the residual sterilizer on the packaging film after sterilization treatment by using sterilizing gas as a sterilizing agent for the packaging film. It is to be.

(b) Means for Solving the Problems The sterilizer according to the present invention is provided with first and second seal chambers separated from the sterilization chamber by a partition wall before and after the sterilization chamber filled with sterilization gas, A liquid tank is provided in the sealing chamber, and the liquid tank is filled with a sterile sealing liquid, and the inside of the sterilization chamber is positively pressurized with airless air, and the packaging film to be sterilized passes through the partition wall. An opening is formed, a guide tube surrounding the packaging film transfer path is provided in the sealing chamber, one end of the guide tube is joined to the partition wall around the opening, and the other end is placed in the sealing liquid. has been done.

04 Effect In the above configuration, the packaging film is first sent into the first sealing chamber, passes through the sealing liquid therein, enters the guide tube, and passes through the guide tube into the stepped tooth chamber filled with sterilizing gas. and is sterilized there. Thereafter, the packaging film is passed through another guide tube into the liquid in the second sealing chamber and sent to the next process.

(F) Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, a sterilizer 1 according to this embodiment is shown. This sterilizer 1 includes a sterilization chamber 22 and a sterilization chamber 22.
First and second seal chambers 23 and 24, which are separated from the sterilization chamber by partition walls 25 and 26, respectively, are defined before and after 0, that is, on the upstream and downstream sides of the sterilization chamber 22 when viewed in the transport direction of the packaging film to be sterilized. It is equipped with a housing 2. Front wall 27 of housing 2 and bulkhead 2
5 and 26 are formed with openings 28 and 29.30, respectively, through which the packaging film f can pass.

Inside the sterilization chamber 22, a plurality of guide rollers 31 for guiding the packaging film are vertically and alternately rotatably provided in a known manner. Inside each seal chamber 23 and 24,
Guide tubes 42 and 43 are provided, respectively, surrounding the transport path of the packaging film f. Each guide tube 42, 43 is bent into an L shape, and one end thereof is joined to the partition walls 25 and 26 around the openings 29 and 300, respectively, and the other end is connected to the liquid tank 32 and 26 formed at the bottom of the seal chamber. It is directed towards the bottom of 33. Liquid @32
and 33 contains a sterile sealing liquid, i.e. sterile water l7,
12 is inserted, and the other end of the guide tube is inserted therein.

A plurality of guide rollers 34, 35 are provided within each sealing chamber 23, 24, guide tubes 42, 43, and liquid tanks 32, 33 to guide the packaging film.

Since the sterilization chamber 22 uses ozone gas as a sterilization gas, the sterilization chamber 22 is connected to the oscillator/generator 5 via a conduit 51 and a valve 52 so that ozone gas can be supplied into the sterilization chamber. Note that 53 is an ozone concentration sensor provided in the sterilization chamber 22, which constantly checks the ozone concentration in the sterilization chamber to maintain a constant concentration.

Introductory pipes 37 and 38 are connected to the liquid tanks 32 and 33,
A source of sterile water is connected to the inlet pipes 37, 38 by known means. Note that 39° and 40 are discharge pipes for discharging the sealing liquid in the liquid tank so as not to exceed a certain amount.

A cylindrical drying chamber 50 and a drying chamber Go are connected in series to the second seal chamber 24 in the housing 2 . A plurality of nozzles 51 are provided in the drying chamber 50 for blowing sterile heated air onto the packaging film f to dry the sealing liquid attached to the film. A heater 61 is provided within the drying chamber 60.

In the above configuration, the packaging film f enters the first sealing chamber 23 through the opening 28 and the plurality of guide rollers 3
4 and sealing liquid 4. and enters the sterilization chamber 22 through the guide tube 42. The surface of the packaging film f that has entered the sterilization chamber 22 is sterilized by the ozone gas filled in the sterilization chamber while being guided by the guide rollers 31 and moved. The sterilized packaging film passes through the guide tube 43 and enters the sealing liquid 12 contained in the liquid tank in the second sealing chamber 24, and is sent from there to the second sealing chamber, the drying chamber 50, where it is dried. In the drying chamber, the sealing liquid adhering to the packaging film f is dried by sterile heated air spouted from the nozzle 51 and sent into the next heating chamber 60.

(g) Effects According to the packaging film sterilizing device of the present invention, it is possible to completely prevent the sterilizing agent from remaining on the packaging film, and there is no fear of sterilizing gas leaking outside, making it extremely safe.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a packaging film sterilization device according to the present invention, and FIG. 2 is a schematic diagram of a sterilization packaging process including a conventional sterilization device. 1: Placement device 2: Housing 22: Sterilization chamber 23.24: Seal chamber 25.26
: Bulkhead 42,43 guide tube Patent applicant CKD Co., Ltd. Agent Patent attorney Yasushi Yuasa e'j, j, j (5 others)

Claims (1)

[Claims] First and second seal chambers are provided before and after the sterilization chamber filled with sterilization gas, separated from the sterilization chamber by a partition wall, and a liquid tank is provided in the seal chamber, and a sterile sealing liquid is contained in the liquid tank. At the same time, the inside of the sterilization chamber is pressurized to positive pressure with sterile air, an opening is formed in the partition wall through which the packaging film to be sterilized passes, and a guide tube surrounding the transport path of the packaging film is provided in the sealing chamber. A sterilizing device characterized in that the guide tube is provided with one end joined to the septum around the opening and the other end immersed in the sealing liquid.