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Method for sterilizing preform and resin container

A technology made of preform and resin, which is applied in the direction of packaging sterilization, packaging item types, liquid materials, etc., and can solve the problems of bactericide residue, bactericide not evenly attached, poor sterilization, etc., and achieve the effect of realizing cost

Active Publication Date: 2017-03-01
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, according to the conventional method of sterilizing resin containers, the bactericide may not evenly adhere to the entire surface of the container.
If the bactericide does not form a uniform coating on the surface of the container, poor sterilization will occur on the surface of the container
[0013] If the flow rate of the spraying of the fungicide is increased, the fungicide will be evenly attached to the surface of the container, and the sterilization effect will be improved. Insufficient, it will cause the problem of fungicide residue
In addition, there will be a problem that the time for sterilization treatment becomes longer

Method used

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  • Method for sterilizing preform and resin container
  • Method for sterilizing preform and resin container
  • Method for sterilizing preform and resin container

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0109] First, use Figure 1 ~ Figure 3 The configuration and general functions of an apparatus for performing corona discharge treatment on preforms before being molded into bottles will be described.

[0110] Here, the preform refers to a preform before being molded into a container, that is, a bottle.

[0111] Such as figure 1 As shown, the corona discharge treatment device 10 has: an electrode 11, which can pass through the opening of the preform; a grounding part 12 for grounding; a power supply part 13, which applies a voltage to generate a corona discharge to the electrode 11; a driving part 14 , which inserts the electrode 11 into the preform P; the driving part 15, which makes the ground part 12 cover the preform P; the control part 16, which controls the operation of the driving part 14 and the driving part 15.

[0112] The corona discharge treatment device 10 modifies the inner surface of the preform P by corona discharge. For example, electrons emitted from the e...

Embodiment approach 2

[0198] In this Embodiment Mode 2, a conductor whose configuration is different from that in Embodiment Mode 1 is used for the corona discharge treatment.

[0199] Such as Image 6 As shown, the ground portion 42 (an example of a grounded conductor) does not have an insulating portion, and is composed of only a grounded conductor.

[0200] In this case, the preform P is installed so that the preform P does not come into contact with the ground portion 42 of the conductor. In addition, the opening p3 of the preform P slightly protrudes from the opening of the land portion 42 .

Embodiment approach 3

[0202] First, use Figure 11 , Figure 12 and image 3 The configuration and general functions of an apparatus for corona discharge treatment of bottles, which are one type of resin containers, will be described.

[0203] Such as Figure 11 As shown, the corona discharge treatment device 10 is equipped with: an electrode 11, which can pass through the opening of the resin container, that is, the bottle B; a grounding part 12 that is grounded; a power supply part 13 that applies a voltage that generates corona discharge to the electrode 11; The driving unit 14 is used to insert the electrode 11 into the bottle B; the driving unit 15 is used to cover the grounding unit 12 on the bottle B; the control unit 16 controls the operation of the driving unit 14 and the driving unit 15 .

[0204] The corona discharge treatment device 10 modifies the inner surface of the bottle B using corona discharge. For example, electrons emitted from the electrode 11 by corona discharge are acceler...

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PUM

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Abstract

A method for sterilizing preform and resin container increases the sterilizing effect of hydrogen peroxide on a preform or a resin container. The present invention subjects the inner surface of a preform or a resin container to a corona discharge treatment including: a voltage application step for applying a voltage produced by a corona discharge to an electrode capable of passing through the opening in a preform or resin container comprising a material having polyethylene terephthalate as a principal component thereof; an insertion step for inserting the electrode to which the voltage has been applied into the preform or resin container through the opening; and a floor section treatment step for treating the inner surface of the floor section of the preform or resin container by bringing the electrode close to the floor section thereof, until the state of corona discharge from the electrode changes. Thereafter, the present invention subjects the preform or resin container to a sterilization treatment including a hydrogen peroxide supply step for spraying a hydrogen peroxide mist or gas or mixture thereof into the preform or resin container.

Description

technical field [0001] The present invention relates to a method for sterilizing preforms and resin containers. Background technique [0002] Conventionally, a sterilizing agent such as hydrogen peroxide is blown onto a preform made of PET (polyethylene terephthalate) to sterilize it, and then, after heating the preform to the molding temperature, use A blow molding machine molds the preform into a bottle, and then fills the bottle with a drink and caps it to form an aseptic package (for example, refer to Patent Documents 1 and 2.) [0003] On the other hand, when filling contents such as sterilized beverages and soups into resin containers, it is necessary to sterilize the containers in advance. [0004] Conventionally, containers have been sterilized by blowing spray or gas of a bactericidal agent such as hydrogen peroxide, or their mixed gas onto the surface of the container to sterilize the container (for example, refer to Patent Documents 3 to 5). [0005] Patent Docu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65B55/04A61L2/18A61L2/20A61L2/22B65B55/02B65B55/10
CPCA61L2/22A61L2/14A61L2/186B65B31/025B65B55/06B65B55/08B65B55/10A61L2/208A61L2202/23B65B3/04B65B7/2835B65B39/00
Inventor 佐藤嘉则土屋博隆
Owner DAI NIPPON PRINTING CO LTD
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