JPH0237719Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a stacked body in which powder is interposed between glass plates and the like.

(Prior Art) Glass plates and the like are generally stacked in large numbers when being stored, handled, and transported. and,
In this case, if the glass plates are brought into direct contact with each other, it may cause damage, so conventionally, interleaving paper is interposed between the glass plates, or synthetic resin powder or safflower powder is sprinkled between them.

(Problems to be solved by the invention) Among the conventional stacks mentioned above, those with interleaving paper interposed therein do not allow resin, etc. in the interleaving paper to transfer to the surface of the glass plate due to contact with the interleaving paper. Paper skin formation occurs, and burns caused by contact with moisture in the air cannot be completely prevented.

In addition, when synthetic resin powder or safflower powder is used, if any powder remains on the glass plate surface during the heating process in the production of heat-strengthened glass, it will stick to the glass surface during heating. It becomes difficult to remove later, and the resin may deteriorate and stick to the glass surface.Furthermore, safflower powder denatures and loses its hygroscopicity, and synthetic resin powder is not inherently hygroscopic, so it is difficult to prevent burns. The effect is not sufficient, especially with regard to safflower powder, which contains starch, absorbs moisture and sticks to the glass surface, and contains crude protein, which may cause allergic symptoms.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a stacked structure in which cellulose powder is interposed between members such as glass plates that require surface protection.

(Function) Since the cellulose powder is interposed between the glass plates, direct contact between the glass plates and the like can be avoided, and disadvantages such as burning or paper skin formation do not occur.

(Example) An example of the present invention will be described below based on the accompanying drawings.

FIG. 1 is a perspective view of a stack according to the present invention,
The stack 1 consists of glass plates 3 stacked vertically on a table 2, with cellulose powder 4 interposed between each glass plate 3.

This cellulose powder 4 is made from selected pulp, and the resin content of this selected pulp (2.0% by weight)
In order to lower the amount of water, the raw materials are acid-hydrolyzed and then filtered and washed with water. Thereafter, the cellulose powder 4 is obtained through dehydration and drying steps, pulverization and sieving.

Here, it is preferable to adjust the pH of the cellulose powder 4 to 6 to 7 in order to suppress the chemical reaction on the glass surface, and the particle size of the cellulose powder 4 is about 50 to 400μ. is appropriate.
Furthermore, although it varies depending on the storage environment etc., the amount of cellulose powder 4 to be sprinkled between the glass plates 1 is 0.5~
A weight of 90 g/m ² is preferable from the viewpoint of prevention of burns, prevention of paper skin formation, and cushioning properties. The amount of cellulose powder was set at 0.5 to 90 g/ ^m2 , which was 0.5 g/m2.
If it is less than 90 g/m ² , the glass itself will easily come into contact with scratches, and if it exceeds 90 g/m ² , workability will deteriorate, such as making glass lamination difficult. Further, the spreading method may be arbitrary, but it may be carried out using, for example, a net of about 80 meshes.

In the embodiment, a glass plate is shown as a member requiring surface protection, but the material is not limited to this, and may be a stainless steel plate, an aluminum plate, a resin molded product, or the like.

(Effects of the invention) Figure 2 is a graph comparing the stack according to the invention using cellulose powder and the conventional stack using interleaf paper in relation to the number of days elapsed and white cloudiness. Similarly, it is a graph comparing the stack of the present invention with a conventional stack in terms of the number of days elapsed and the relationship between transparent skin. The results shown in both graphs were conducted under conditions of 60° C. and 98-100% relative humidity, and the amount of cellulose powder applied was 50 g/m ² .

As is clear from these FIGS. 2 and 3, it can be seen that when cellulose powder is interposed between the glass plates, the white cloudiness and transparent skin are greatly improved.

As described above, according to the present invention, as a result of interposing cellulose powder between glass plates, etc., there is no component that transfers from the cellulose powder to the glass surface, so even if it adheres to the glass surface, no trace is left. Since the powder bonds are not hydrogen bonds but mere contact bonds, each powder acts freely against moisture absorption, does not wrinkle like interleaving paper, and conducts absorbed moisture well and dissipates it to the outside air. Also, because it has a coarse density, it does not stick firmly to the glass plate, and acts effectively as a cushioning material during cargo handling and transportation.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the stack according to the present invention, Fig. 2 is a graph comparing the stack according to the present invention and a conventional stack in relation to the number of days elapsed and white cloudiness, and Fig. 3 is a graph according to the invention It is a graph comparing a stack according to the above and a conventional stack in relation to the number of days elapsed and transparent skin. In the drawings, 1 is a stack, 3 is a glass plate, and 4 is cellulose powder.

Claims (1)

[Claims for Utility Model Registration] (1) A stack consisting of members such as glass plates that require surface protection, characterized in that cellulose powder is interposed between the members. In serious condition. (2) The cellulose powder has a pH of 6 to 7, a resin component content of 0.1% or less, and an intervening amount of 0.5 to 7.
90 g/m ² . The stack according to claim 1 of the utility model registration claim.