JPS6330210B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sterilization device for a sterile packaging machine that uses an ultraviolet lamp to sterilize packaging materials, and its purpose is to sterilize the irradiation part of the ultraviolet lamp from heat, sterilizing liquid, etc. In addition to protecting the ultraviolet rays, the irradiation surface of the irradiation section must be wiped clean so that sterilization can be performed while the ultraviolet lamp is always in a stable state.

In general, foam, film, and seal type aseptic packaging machines require a sterilization chamber that has been sterilized in advance. After going through a series of processes such as molding, filling, sealing, and punching, the product is discharged as a sterile product.

When using ultraviolet lamps as a sterilization method,
A pre-sterilized sterilization room is required and positive pressure must be maintained. Even when installing a direct UV lamp in a sterilization chamber, consider the effects of heat and water vapor on the UV lamp when sterilizing it in advance, when using steam sterilization, and the effect on the UV lamp when using a sterilizing solution. There must be. In addition, UV lamps alone may not be sufficient for sterilization, and when a sterilizing solution is used in combination, the irradiated area is contaminated or clouded by the sterilizing solution, and for this reason, the protection of the lamp itself has been limited by its sterilizing power. It was necessary to stabilize the

The present invention prevents the irradiation part of the ultraviolet lamp from becoming contaminated or fogged during pre-sterilization or during operation, and also prevents heat generation during irradiation.
By separating the ultraviolet lamp chamber and the sterilization chamber, the ultraviolet lamp is protected, thereby preventing its deterioration and maintaining the stability of its sterilizing power. As a means of protection, quartz glass is provided in a portion corresponding to the irradiation part, the ultraviolet lamp and the sterilization chamber are separated, and the ultraviolet rays are irradiated through the quartz glass.

Furthermore, a slit-shaped air nozzle is provided on the side of the sterilization chamber of the quartz glass, and fresh air is constantly injected onto the quartz glass surface to prevent contamination, clouding, and heat generation.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A series of aseptic packaging machines incorporating a sterilization device as an embodiment of the present invention will be described with reference to the drawings.

The lid a and the bottom material b that are unwound from the vertically supported winding rolls A and A' are divided into upper and lower parts and advance to the ring-top seal part 14 of the molding device chamber F where they are combined. Ultrasonic oscillators 2, 2' are placed in the cleaning liquid in the immersion tanks 1, 1 in the ultrasonic cleaning chambers B and B' where the lid material a and the bottom material b first enter, and the lid material a and the bottom material b are is cleaned here by ultrasonic waves and advances into the upper drying chambers C, C'.

A drying means is provided in the chambers C and C', and the lid material a and the bottom material b are dried in the drying chambers C and C'.
The drying chambers C and C' are provided with spray nozzles for hydrogen peroxide for pre-sterilization, and the pre-sterilization is performed by spraying hydrogen peroxide.

Below the drying chambers C and C' are sterilization chambers D and D' using ultraviolet lamps, which are the sterilization apparatus of the present invention. The sterilization chambers D, D' are provided with ultraviolet lamp chambers 5, 6 and 5', 6' having ultraviolet lamps 3, 4 and 3', 4', and are separated from the sterilization chamber. , 4 and 3', quartz glasses 7, 8 and 7' corresponding to the irradiated parts of 4',
8' are arranged oppositely at intervals, each forming an irradiation surface. The lid material a and the bottom material b are designed to pass between these quartz glasses 7, 8 and 7', 8', and both surfaces are sterilized by the ultraviolet rays that pass through these quartz glasses. Ru. Below the quartz glasses 7, 8 and 7', 8', slit-shaped nozzles 9, 10 and 9', 10' are provided for spraying fresh air toward the surface thereof. and these nozzles 9, 10 and 9', 1
By the fresh air injected by 0',
Contamination and cloudiness on the surfaces of the quartz glasses 7, 8 and 7', 8' are constantly wiped clean, and heat generation is prevented.

The lid material a and the bottom material b that have left the sterilization chambers D and D' by the ultraviolet lamp proceed to the molding equipment chamber F through chambers E and E'.

In this chamber F, the bottom material b moving downward is preheated in the heating section 11, formed into a container in the forming section 12, filled with contents in the next filling section 13, and sent to the ring seal section 14. Here, the container formed from the bottom material b and filled with the contents is combined with the lid material a, sealed in a ring shape, passes through the chamber G, is punched out as a product in the punching part H, and is discharged. Ru.

The operation of the molding part 12, filling part 13, and ring-shaped seal part 14 in the molding device is performed by the lid material a and the bottom material b.
Since it is necessary to temporarily stop, the lid material a and the bottom material b are intermittently fed by the action of the film conveying device J, and the lid material a and the bottom material b that remain after being punched are
It is wound up on the last winding roll K that protrudes from the side.

These series of aseptic packaging machines are controlled by a control panel L, and each room is equipped with a viewing window M.
has been set up so that the status of each department can be observed.

The present invention is characterized by a sterilization device for the sterilization chambers D and D' using ultraviolet lamps in a series of aseptic packaging machines. The quartz glasses 7, 8 and 7', 8' forming the irradiation parts of the ultraviolet lamps 3, 4 and 3', 4' are arranged oppositely at intervals to form irradiation surfaces. These irradiated surfaces are constantly wiped clean of contamination and cloudiness by the fresh air from the nozzles 9, 10 and 9', 10', and the packaging material is prevented from deteriorating due to heat generation.

Such a sterilizing device of the present invention has a lid member a and a bottom member b that pass between the quartz glasses 7, 8 and 7', 8', which are arranged opposite each other, so that both surfaces are irradiated with ultraviolet rays. However, since quartz glass transmits nearly 90% of the 245 nm wavelength, which is effective for ultraviolet irradiation, in combination with wiping the irradiated surface with flexible air, it helps the penetration of ultraviolet rays and increases the sterilizing power. By installing quartz glass in the ultraviolet irradiation part, the UV lamp is protected from sterilizing liquid, heat, steam, etc., and its deterioration is prevented. It has many effects, such as being able to prevent damage and make maintenance easier.

[Brief explanation of the drawing]

The drawing is an illustrative longitudinal sectional front view of a sterile packaging machine incorporating the device of the invention. A, A'... Roll roll, B, B'... Ultrasonic cleaning room, C, C'... Drying room, D, D'... Sterilization room using ultraviolet lamp, F... Molding equipment room, H... ... punching section, J... film transport section, K... winding roll,
3, 4, 3', 4'...UV lamp, 5, 6,
5', 6'...UV lamp chamber, 7, 8, 7',
8'...Quartz glass, 9,10,9',10'...
Fresh air nozzle.

Claims (1)

[Claims] 1. In a sterile packaging machine using an ultraviolet lamp,
The ultraviolet lamp and the sterilization chamber are separated from each other by a quartz glass, and the sterilization chamber is provided with a nozzle that injects fresh air onto the ultraviolet irradiation surface of the quartz glass. A sterilization device for an aseptic packaging machine, characterized in that the packaging material is irradiated through glass. 2. The ultraviolet lamps are provided on the front side and the back side of the packaging material, and two quartz glasses separating each ultraviolet lamp from the sterilization chamber are provided so as to face each other with the packaging material in between. A sterilizing device for an aseptic packaging machine according to claim 1, characterized in that: