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Article sterilizing methods and sterilizing device

A technology for sterilizing devices and articles, applied in the directions of transportation and packaging, packaging, bottling machines, etc., can solve problems such as poor heat resistance, deformation, and bottle heating

Inactive Publication Date: 2004-11-17
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the temperature or the flow rate of the hot air supplied to the bottle has to be set larger, and as a result, the bottle is easily heated to a high temperature higher than the required temperature.
In particular, resin bottles such as PET bottles have poor heat resistance, so they are easily deformed by high-temperature heating

Method used

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  • Article sterilizing methods and sterilizing device
  • Article sterilizing methods and sterilizing device
  • Article sterilizing methods and sterilizing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0026] figure 1 It is a figure which shows the procedure of the sterilization method of Embodiment 1 of this invention. This embodiment shows a method of sterilizing the inner surface of a PET (polyethylene terephthalate) bottle. In this sterilization method, first, a preheating treatment is performed (step S11). In the preheating, the nozzle 2 is inserted into the inside from the mouth 1 a of the bottle 1 , and hot air is blown from the nozzle 2 to preheat the bottle 1 . At the same time, nozzles 3, 3 are provided on the outer periphery of the mouth 1a of the bottle 1, and hot air is blown from these nozzles 3 to the mouth 1a to heat the mouth 1a again. And, the process of introducing the spray of the sterilizing agent into the bottle 1 is performed simultaneously with the preheating process. The spray is introduced by mixing the spray with hot air supplied for preheating.

[0027] figure 2 It is a schematic diagram showing the equipment used in the preheating and spray...

Embodiment approach 2

[0041] Figure 4 It is a figure which shows the procedure of the sterilization method of Embodiment 2 of this invention. In this embodiment, PET bottles are also used as articles to be sterilized.

[0042] exist Figure 4 In the sterilizing method of the method, a preheating treatment is first carried out (step S21). In the preheating, the nozzle 2 is inserted into the inside from the mouth 1a of the bottle 1, and the bottle 1 is preheated by blowing hot air from the nozzle 2, and at the same time, the treatment of spraying the disinfectant into the bottle 1 is performed in parallel with the preheating treatment. . The introduction of the spray is done by using figure 2 The shown device is realized by mixing and spraying hot air for preheating.

[0043] In addition, in Figure 4 In the sterilization method, instead of figure 1 The shown nozzle 3 preheats and sterilizes the outer surface of the mouth portion 1a of the bottle 1 by the guide member 20 provided on the nozz...

Embodiment 1

[0057] A 500ml PET bottle was sterilized according to the procedure of Embodiment 1. The specific sterilization sequence is as follows.

[0058] (1) From a nozzle with an inner diameter of 10mm to 0.5m 3 The air volume per minute is introduced into the bottle with hot air at a temperature of 105-125°C at the nozzle opening. At this time, 35% hydrogen peroxide is vaporized at a rate of 80 to 400 g per minute to generate a bactericide spray, which is mixed with hot air and introduced into the bottle.

[0059] (2) Then, the supply of hot air was stopped, and after 0.5 to 3.5 seconds, hot air was blown into the inside of the bottle for 1 second under the same conditions as preheating (but without mixing spray).

[0060] (3) The supply of hot air was stopped, and 1 ml of a 500 U / ml catalase aqueous solution was sprayed into the inside of the bottle after 1 second.

[0061] (4) After 5 seconds, the bottle was turned over, and sterile water heated to 70° C. was sprayed into the bo...

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Abstract

An apparatus for sterilizing the inside of an article such as a PET bottle comprises a hot air supplying device (14) for supplying hot air to the inside of an article (1), and a mist generating device (33) for producing mists of a sterilizing agent. By mixing the mists produced by the mist generating device with the hot air supplied by the hot air supplying device and introducing the same to the inside of the article, the sterilizing agent mists can be introduced evenly to every corner in the inside of the article so as to obtain an even sterilizing effect. Furthermore, the sterilizing apparatus comprises an air rinsing device (56) for discharging the air including the mists inside the article by blowing in the sterilized air to the inside of the article, and a washing device (57) for supplying a washing agent to the inside of the article.

Description

technical field [0001] The invention relates to a sterilization method and a sterilization device for articles such as PET bottles. Background technique [0002] As a sterilization method used in an aseptic filling system for beverage bottles, there is known a method of blowing hot air into the inner surface of the bottle to raise the temperature of the bottle, and then introducing hydrogen peroxide mist into the bottle to sterilize it. (Refer to Japanese Patent Laid-Open No. 2001-39414) [0003] In the conventional method, the sterilizing agent is sprayed from a nozzle arranged directly above the bottle transported along the assembly line, and therefore a large amount of hydrogen peroxide needs to be supplied from the nozzle in order to uniformly attach the mist to the inner surface of the bottle. In addition, the bactericidal effect of the spray is greatly affected by the temperature of the bottle, and if there is a deviation in the temperature distribution of the bottle ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L2/06A61L2/18A61L2/22B65B55/10B67C7/00
CPCA61L2/06B65B55/10A61L2/186A61L2202/23A61L2/22B67C7/0073
Inventor 林亮早川睦高木雅敏小山彰
Owner DAI NIPPON PRINTING CO LTD
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