JPH08202269A - Method for removing paper material sticking to solid surface and apparatus therefor - Google Patents

Abstract

PURPOSE: To rapidly remove paper labels from beer bottle surfaces and to prevent the fissure of glass surfaces by spraying air flow contg. the particulates of dry ice and paper material softening liquid mists to the paper material sticking to the solid surfaces. CONSTITUTION: A dry ice supply pipe 3 is connected to a spray nozzle 1 to supply the dry ice 4 pulverized to particulates into the air 2. A water mist supply pipe 5 is arranged within the spray nozzle 1 to supply the water mists 6 into the air 2. The dry ice particulates 4 and the water mists 6 are accelerated together with the air 2 in the spray nozzle 2. The flow mixed with the three is injected toward the paper labels 7 sticking to the beer bottle walls 8 of the solid wall surfaces. The water mists 6 are stuck to the paper labels 7 and are absorbed therein, by which the paper material is softened and the destruction thereof is made easy. The dry ice particles 4 destroy the paper labels 7 by impact and gasify by intruding into the labels, thereby peeling the paper from the inside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for removing a paper material attached to a solid surface suitable for removing paper material such as a paper label attached to a solid surface such as a glass surface, a metal surface or a concrete surface. It is about.

[0002]

2. Description of the Related Art Conventionally, in order to remove paper quality such as paper labels glued to glass surface, metal surface, concrete surface, etc., scrape the paper quality with a brush or sprinkle the paper quality with water. Such removal methods have been adopted and required a great deal of human power. Also, when removing a paper label attached to a beer bottle, at present, the beer bottle with a paper label is immersed in a tank filled with a cleaning solution. In particular, beer bottles are subjected to treatment such as submerged jet injection and brushing in a tank containing alkaline liquid, and the paper labels are sequentially removed.In this treatment, the scraps of the removed paper labels float in the liquid. However, there is a problem that the work for removing this is heavy. Further, in this method, there is a problem that the calcium content eluted from the paper label adheres to the surface of the beer bottle as a scale and the bottle becomes cloudy. Therefore, if the paper label can be removed in a dry state without being removed in a liquid, these problems can be solved, and an efficient and light work load process can be realized.

As a method of removing a paper label in a dry state, there is a method of peeling and removing by a shot blast. This sprays sand or metal particles onto the paper together with the air, and a sufficient removal effect can be expected. However, in this shot blasting method, there is a problem of post-treatment such as scratching the bottle surface and the need to separate the waste material and particles of the treated paper, and it is insufficient as a method for removing the paper quality of the beer bottle. is there. Against this background, in recent years, shot blast using fine particles of dry ice has come to be used (Japanese Patent Laid-Open No. 5-331689). In this method, the dry ice fine particles that have collided with the solid surface are elevated by the impact pressure to generate gas. This gas has the effect of peeling and removing the deposits on the surface. Therefore, as compared with ordinary shot blasting, a large removal effect can be obtained with a small amount. Further, since the dry ice particles are gasified, there is also an advantage that the problem of post-treatment of the particles becomes unnecessary.

[0004]

However, when the shot blast of dry ice particles is used for removing the paper label of the beer bottle, the time required for peeling the paper label is long and it is necessary to treat a large number of bottles continuously. Since the temperature is insufficient and the temperature of the blown air becomes low, the glass surface is rapidly cooled and the glass is cracked due to the temperature change. Further, in the removal method described in Japanese Patent Application No. 5-331689, since the two-step process of spraying dry ice pellets on a gas after applying a release agent for the coating film, the work is performed. There are problems such as being troublesome. Therefore, the present invention solves the above-mentioned conventional problems by providing a shot blasting method capable of effectively removing a paper label in a short time and not causing a crack on a glass surface.

[0005]

Therefore, according to the present invention, the paper quality is peeled and removed from the solid surface by spraying an air flow containing fine particles of dry ice and paper softening liquid mist onto the paper quality attached to the solid surface. In addition, it is equipped with a spray nozzle for spraying an air flow containing fine particles of dry ice onto the paper material attached to the solid surface, and a paper softening solution mist supply pipe arranged in the vicinity of the nozzle ejection port. It is a means for solving the problem.

[0006]

In the present invention, by adding the water mist to the dry ice blast, the water mist mixed in the air collides with the paper quality and is absorbed, and the paper quality is softened and easily broken. When fine particles of dry ice collide with the paper quality in this state, the fine particles destroy the paper quality and enter the inside, and dissipate energy between the paper and the glass surface in an ascending form and gasify. Gasification rapidly occurs and the gas flow at that time causes the paper quality to be peeled off from the inner surface. At this time, the peeling effect is large, and since the paper quality is softened by the water mist, the particles easily enter the paper quality, and the peeling effect is further enhanced. By adding the water mist in this way, it becomes possible to further shorten the time required for removal as compared with the conventional shot blasting using only dry ice particles.

On the other hand, the water mist has the effect of suppressing the temperature change of the air flow, and prevents the temperature decrease of the air flow due to dry ice. If the temperature of the airflow is too low, the bottle surface may be rapidly cooled and may cause cracks, but the water mist also serves to prevent this. Therefore, according to the dry ice blasting method in which water mist is added, it is possible to shorten the paper quality removing work, prevent the bottle from cracking due to a decrease in the air temperature, and simplify the working process. Further, since the fine particles of dry ice and the water mist are each gasified after being sprayed, they can be exhausted together with the air and do not remain as a solid. Therefore, the only waste material is the removed paper quality,
Post-processing becomes easy.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic structural explanatory view of the embodiment. In FIG. 1, 1 is a spray nozzle, 2 is air, 3 is a dry ice supply pipe, 4 is dry ice fine particles, 5 is a water mist supply pipe as a paper softening liquid, 6 is a water mist for paper softening, 7
Is a paper label and 8 is a beer bottle wall as a solid surface.

A dry ice supply pipe 3 is connected to the spray nozzle 1, and dry ice pulverized into fine particles is supplied into the air 2 through the supply pipe 3. Further, a water mist supply pipe 5 is arranged inside the spray nozzle 1,
From the water mist supply pipe 5, the water mist 6 is similarly air 2
Supplied to The dry ice particles 3 and the water mist 6 are accelerated together with the air 2 in the blowing nozzle 1 and blown out from the outlet. The mixed flow of the three is jetted toward the paper label 7 attached to the beer bottle wall 8 as a solid wall surface. The water mist 6 adheres to and is absorbed by the paper label 7, thereby softening the paper quality and facilitating the destruction. The dry ice fine particles 4 destroy the paper label 7 by the impact, and also dig into the inside to be gasified and peel the paper from the inside. Due to both effects, the removal of the paper label is completed in a short time. Note that, instead of the water mist supply pipe 5, a water mist may be generated at the nozzle portion by injecting water as a water supply pipe having a nozzle-shaped tip. Further, if necessary, it is possible to mix a chemical agent or the like that promotes the peeling of the paper quality attached to the solid wall surface into the water mist for softening the paper quality. Further, as long as it is a liquid that can soften the paper quality, the liquid sprayed on the paper quality is not necessarily limited to water.

[0010]

As described above in detail, according to the present invention, the paper label can be effectively and quickly removed from the surface of the beer bottle. Further, since the dry ice fine particles used and the water mist for softening the paper quality are removed by the exhaust, the waste after the processing becomes only the paper quality, which facilitates the treatment. Further, compared with the conventional method for removing the paper label of the beer bottle in the liquid, the work can be significantly reduced and the bottle is not clouded. Therefore, it is a very effective paper label removing method. Further, shot blasting with only dry ice particles could not be applied to the removal of a paper label from a beer bottle, but the present invention provided a water mist and thus was a practically applicable removal method. In particular, when a soft resin bottle such as a PET bottle comes to be collected and reused, it is a very effective paper quality removing method. In addition, the removal method disclosed in Japanese Patent Laid-Open No. 5-331689 requires two steps, but since this can be done in one step, it is possible to significantly reduce the paper quality removal processing time and other excellent effects. It plays.

[Brief description of drawings]

FIG. 1 is a schematic configuration explanatory diagram according to an embodiment of the present invention.

[Explanation of symbols]

 1 Spray Nozzle 2 Air 3 Dry Ice Supply Pipe 4 Dry Ice Fine Particles 5 Water Mist Supply Pipe 6 Water Mist 7 Paper Label 8 Beer Bottle Wall (Solid Wall Surface)

Claims (2)

[Claims] 1. A paper material adhered to a solid surface characterized by peeling and removing the paper material from the solid surface by spraying an air stream containing fine particles of dry ice and a mist of paper softening liquid onto the paper material adhered to the solid surface. Removal method. 2. A spray nozzle for spraying an air flow containing fine particles of dry ice onto a paper material attached to a solid surface,
An apparatus for removing paper quality attached to a solid adhesion surface, comprising: a paper softening liquid mist supply pipe arranged in the vicinity of the nozzle ejection port.