JP3167751B2 - Glass plate spacer and glass plate laminate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spacer for a glass plate which is interposed between glass plates in order to prevent burning (burning) and abrasion of the glass plates when a plurality of glass plates are laminated. To a laminated glass sheet.

[0002]

BACKGROUND ART or store the glass sheet In general, when transporting, for although laminating multiple sheets of glass, to prevent this case, the generation of scorch and abrasion of the glass plate, conventionally, paper Or a resin in the form of powder was inserted as a spacer between the glass plates.

[0003] However, it is difficult to automate the insertion and the like of paper, and the occurrence of wrinkles on the paper causes stain marks to adhere to the glass plate. In addition, once used paper,
Difficult to reuse. On the other hand, powdery synthetic resins, such as methacrylic acid ester resins, are easier to automate, such as insertion, than paper, but make dew condensation water droplets adhere to the surroundings, erode glass, and easily cause burns. .

[0004]

The object of the invention is to solve the present invention, the above-mentioned
Which it has been made in view of the earthenware pots circumstances, or store to a large number of sheets stacked glass plates, the occurrence of scorch or scratches can be suppressed markedly as compared with the conventional example in the case or to the transport and handling An object of the present invention is to provide a glass plate spacer and a glass plate laminate that are simple, can easily be inserted into a glass plate, can be automated, and can be easily removed.

[0005]

Means for Solving the Problems The present invention has been made in order to achieve the object, consisting of a cation-exchange resin powder, a plurality of glass plates for a spacer for separating the glass plate, and a plurality An object of the present invention is to provide a glass plate laminate in which a cation exchange resin powder is interposed between two glass plates.

As the spacer of the cation exchange resin powder which is a feature of the present invention, powders such as a weakly acidic cation exchange resin having a carboxylic acid group and a strongly acidic cation exchange resin having a sulfone group can be used. The ion exchange group may be an acidic group capable of cation exchange, such as a phenolic hydroxyl group or a phosphonic acid group, in addition to the above carboxylic acid group and sulfonic acid group.

The base resin is not particularly limited as long as it is insoluble in water. Examples thereof include styrene resins such as polystyrene sulfonic acid resins, methacrylic resins such as polymethacrylic acid resins, and phenol sulfonic acid resins. And other various amine condensation resins. The shape of the cation-exchange resin powder, it may also be spherical bur, considering the response to displacement of the glass plate when the mounting side of the glass plate, amorphous particulate is more preferable. The particle size of the powder during use, 100 microns m to 60 on average
About 0μ m is preferable.

[0008] The average particle size of cullet flaw tends to occur due to minute cullet waste remaining in the 100 microns m smaller than the glass plate surface, also not preferred aggravate working environment becomes dust, the average particle diameter of 600 [mu] m the powder is dropped when every vertical larger than the glass plate laminate, since not function as a spacer is not preferred. Mean particularly consider this point particle size is optimally about 200μ m ~450μ m.

Further, when the cation exchange resin powder of the present invention is used as a spacer for a laminated body of glass plates, it is preferable that the ion exchange group of the cation exchange resin is a proton type. In the present invention, the cation exchange resin powder to be interposed between a plurality of glass plates is preferably used alone, but may be used in combination with other powdered spacers.

[0010]

In the present invention, the cation exchange resin powder itself is softer than the glass plate, so that the glass plate is prevented from being scratched, and has an effect similar to that of the conventional spacer in that the cation exchange resin powder is smoothly separated one by one. .

Further, in the present invention, the ion exchange group of the cation exchange resin greatly suppresses erosion of the glass plate due to moisture attached to the glass plate due to condensation of moisture in the air during storage or transportation. . Its effect is that when alkali metal ions and alkaline earth metal ions in the glass plate are dissolved in the water attached to the surface of the glass plate, the cations of the alkali metal ions and the alkaline earth metal ions are exchanged with the protons of the cation exchange resin, whereby the attached water is removed. Is prevented from becoming alkaline. That is, the dissolution of silica on the surface of the glass plate under alkaline conditions is suppressed.

Further, the alkali metal ions and alkaline earth metal ions eluted during drying produce carbonates. Particularly, carbonates of alkaline earth metals are hardly water-soluble, so that they adhere to the glass plate surface. Although dirt that cannot be removed by mere washing with water is absorbed, it is adsorbed by the cation exchange resin, so that no carbonate is generated in the present invention.

[0013]

Embodiments of the present invention will be described below.

[0014] (Example 1) Powder of a cation exchange resin "Amberlite IR-120B" having a sulfone group of strongly acidic as the ion exchange group (trade name, manufactured by US Rohm and Haas Company) (average particle size of about 45
The 0μ m), was sprayed at a rate of glass plate 1 m ² per about 100g so that spacer between 3mm glass plates several sheets of thickness cut into 100mm square, providing a sample of the glass plate laminate was Yokoseki did. The prepared glass plate was previously degreased and washed with isopropanol. The sample was set in a thermo-hygrostat (manufactured by Tabai Espec Corp.) maintained at 60 ° C. and a relative humidity of 95%, and taken out almost every other week, and the haze value after rinsing with water, in order to observe the degree of burn of the sample. Was measured with a haze meter.

[0015] (Example 2) powder of the cation exchange resin having a carboxyl group in weakly acidic with an ion-exchange group "Amberlite IRC-50" (trade name, manufactured by US Rohm and Haas Company) (average particle size of about 33
0μ m) was carried out the same test as in Example 1.

[0016] (Comparative Example) methacrylate ester resin powder such that the spacers between the glass plate samples (average particle size 200 [mu] m) glass plate 1
The sample was sprayed at a rate of about 100 g per m ^{2 and} placed horizontally to prepare a sample of the glass plate laminate. The same test as in Example 1 was performed using this sample.

FIG. 1 shows the results of the constant temperature and humidity test for each of the above samples. FIG. 1 is a graph showing the relationship between the number of days elapsed in a thermo-hygrostat for a sample and the haze value of the glass plate. From the graph of FIG. 1, the sample of glass plate laminate of Comparative Example has increased rather <br/> haze value authored in accordance with the age at constant temperature and humidity chamber, is burnt surface of a glass plate On the other hand, the samples of the glass plate laminates of Examples 1 and 2 showed almost no increase in the haze value according to the number of days elapsed in the thermo-hygrostat, or It is observed that the burn on the surface of the glass plate is suppressed as compared with the comparative example.

[0018]

According to the present invention, the properties as spacers of PMMA (polymethyl methacrylate resin) powder or the like which has been used during conventional glass plate transportation or storage, that is, contact between glass plates. The advantages of preventing scratches due to rubbing, spray removal and the like are simple, automation is possible, and the burn-out phenomenon of the glass plate, which cannot be obtained with the conventional PMMA powder and causes the progress to occur in reverse. It has the effect of preventing it very effectively.

Moreover, since the burnt prevention, the case of using paper as a spacer, by paper condensed water is absorbed, resulting wrinkles, but paper marks were often occur, this phenomenon in the present invention Does not occur.

In some cases, organic acid-based crystals are mixed into powder such as PMMA in order to prevent burns. However, in the present invention, since cation exchange resin alone has a burn preventing ability, equipment such as mixing is required. do not do. In addition, organic acid-based crystals
Although eluted by washing with water before use, in the present invention, reuse by washing and regeneration is possible.

Further, if the glass plate is used after being crushed appropriately, it has the above-mentioned advantages, and it is possible to prevent the glass plate from slipping and falling off due to rolling during horizontal mounting.

[Brief description of the drawings]

FIG. 1 is a graph showing the results of a constant-temperature and constant-humidity test of samples of glass sheet laminates according to Examples 1 and 2 and Comparative Example.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) C03C 23/00 C03B 40/00-40/033

Claims (2)

(57) [Claims] 1. A glass plate spacer for separating a plurality of glass plates , comprising a cation exchange resin powder. 2. A glass sheet laminate in which a cation exchange resin powder is interposed between a plurality of glass sheets.