TW201429905A - Paper slip sheet for glass and glass sheet package - Google Patents

Abstract

A paper slip sheet for glass is provided. This paper slip sheet is to be used in stacking glass sheets, and can inhibit the occurrence of defects, the cause of which is foreign matter transferred from a slip sheet, in wiring formed on a glass sheet or the like. A paper slip sheet which is to be interposed among multiple glass sheets in stacking the glass sheets, wherein the content of a silicon-bearing organic compound (organopolysiloxane) is 3ppm or lower.

Description

Glass spacer paper and glass plate bundle Field of invention

The present invention relates to a glass spacer paper and a glass sheet package body using the same.

Background of the invention

Glass plates for FPD (Flat Panel Display) such as glass plates for buildings, glass plates for automobiles, glass plates for plasma displays, and glass plates for liquid crystal displays, which may cause scratches on the surface and foreign matter on the surface during storage and transportation. For other reasons, product defects are easily generated.

In particular, glass plates (glass substrates) for FPD have fine electrical wiring (hereinafter also referred to as "wiring"), electrodes, circuits, and partition walls, so that even slight scratches or contamination on the surface are caused. It will also be a cause of badness such as disconnection. Therefore, there is a need for high surface cleanliness for the glass sheets used for such applications.

In general, the glass plate is stored and transported in a state of being stacked on a pallet or the like for packaging. At this time, most of the flaws on the surface of the glass plate occur at this time due to friction between adjacent glass plates.

Moreover, the pollution of the surface of the glass plate is mostly due to the preservation of the surrounding environment. And the transportation of pollutants such as organic substances in the surrounding environment to the surface of the glass plate occurs.

It is difficult for the pollutant to be removed from the surface of the glass plate by washing only with water. Therefore, the removal of pollutants must be washed with an acid or a base. However, washing as described will not only deteriorate the working environment at the time of washing, but also increase the cost of washing and waste disposal. Moreover, even if the washing is performed, it is difficult to completely remove the contaminant from the surface of the glass plate.

As a method for preventing the surface of the glass sheet from being scratched and contaminated, a method of separating the surface of the adjacent glass sheet from the surface by sandwiching the paper between the glass sheets to be laminated has been used. Among the methods of glass spacer paper.

However, in the method of interposing the glass sheets between the glass sheets, the glass spacer paper is in direct contact with the surface of the glass sheets. Therefore, various components such as resin existing on the surface of the glass spacer paper are transferred to the surface of the glass sheet, and the surface of the glass sheet is contaminated, so that the glass sheet is colored, yellowed, and dirty (hereinafter, also referred to as "transfer". Dirty") and other issues.

As a method for solving the above problem, for example, Patent Document 1 discloses a glass spacer paper containing 0.1% by weight or more of sodium tripolyphosphate.

Further, Patent Document 2 discloses a glass spacer paper containing sodium tetraborate of 50 mg/m ² or more.

In addition, in the case of the patent document 3, the glass plate package is used, and the glass board is bundled by the glass spacer paper which the content rate of the high-saturated fatty acid is 0.08 mass% or less.

Advanced technical literature Patent literature

Patent Document 1: Japanese Laid-Open Patent Publication No. Hei 6-316432

Patent Document 2: Japanese Patent Laid-Open No. Hei 7-110138

Patent Document 3: International Publication No. 2011/118502

Summary of invention

By using such glass spacer paper, it is possible to reduce the transfer of the components contained in the glass spacer paper to the surface of the glass sheet, thereby suppressing the transfer of the surface of the glass sheet.

However, when such a glass spacer is used for lamination of a glass plate on which a component such as a wiring or an electrode is formed on a surface of a glass plate for FPD or the like, it is necessary to sufficiently suppress fine transfer of the transfer from the glass spacer paper. It is very difficult to have bad conditions such as electrodes and circuits.

The object of the present invention is to solve the problems of the prior art, and to provide a glass spacer paper and a glass plate package body using the glass spacer paper, which can be formed on a surface of the glass plate with components such as wires or electrodes. , which greatly suppresses the occurrence of defects such as wiring due to contamination caused by transfer of the glass spacer paper.

In order to achieve the above object, the present invention provides a glass spacer paper which is obtained by laminating a plurality of glass sheets between the glass sheets: the glass spacer paper is characterized by: an organic compound having a cerium element (atoms) ( Take Hereinafter, the content of "organoquinone compound" is also 3 ppm or less.

In the glass spacer of the present invention, the organic compound contained may be exemplified by polyoxyl (organopolyoxyalkylene).

The raw material of the glass spacer paper is preferably a pulp having a polyfluorene content of 10 ppm or less. The raw material of the glass spacer paper is preferably at least one selected from the group consisting of chemical pulp, semi-chemical pulp, mechanical pulp, non-wood fiber pulp, and synthetic pulp.

Moreover, the raw material of the glass spacer paper is preferably a raw pulp.

Furthermore, the thickness of the glass spacer paper is preferably 0.05 to 0.10 mm.

The papermaking method of the glass spacer paper of the present invention preferably has a step of dissolving and removing an organic compound having a cerium element attached to the pulp or paper, and the step is selected from at least one of the group consisting of the following steps: a step of washing the pulp with an organic solvent, the pulp will be a raw material of the glass spacer paper; a step of spraying the glass spacer paper with an organic solvent before and/or after drying; and passing the glass spacer paper through the filling The step of a tank with an organic solvent.

The organic solvent is preferably an organic solvent which can dissolve an organic compound having a cerium element, or a solvent which has been diluted with the organic solvent.

A hydrocarbon-based organic solvent is preferred as the organic solvent.

Further, the present invention provides a glass sheet package body in which the glass spacer paper of the present invention is laminated between a plurality of sheets of glass sheets and a sheet.

In the glass sheet package of the present invention as described, the glass sheet is preferably a glass sheet for a flat panel display.

When the glass spacer of the present invention is used, it is possible to greatly suppress the organic matter containing the ruthenium atom transferred from the glass spacer when the fine wiring or the electrode is formed on the surface of the glass plate which is laminated between the glass spacers. The defects caused by the compounds. Therefore, the use of the glass spacer of the present invention can improve the yield and reduce the production cost of FPD and the like.

10‧‧‧Manufacturing device for glass spacer paper

12‧‧‧Headbox

14‧‧‧Network Department

16‧‧‧Under the net

18‧‧‧Internet

20‧‧‧ Pressurization

24‧‧‧Drying Department

26‧‧‧Department of Twilight

28‧‧‧Rolling frame

30‧‧‧ Large original paper roll

32‧‧‧ paper rolls

34‧‧‧Cutter

36‧‧‧Winding machine

50‧‧‧glass plate bundle

52‧‧‧ bracket

54‧‧‧Abutment

56‧‧‧ tilting table

58‧‧‧ mounting table

60‧‧‧glass spacer paper

G‧‧‧glass plate

Fig. 1 is a partial view showing an example of a glass spacer paper manufacturing apparatus conceptually.

Fig. 2 is a partial view showing an example of a glass spacer manufacturing apparatus conceptually.

Fig. 3 is a conceptual view showing an example of a glass plate package of the present invention.

Form for implementing the invention

Hereinafter, the glass spacer paper and the glass plate package of the present invention will be described in detail with reference to the accompanying drawings.

As described above, the glass plate is supplied to the storage and transportation in the state of the glass plate package (glass laminate), and the glass plate packaging system causes the glass sheets to be laminated between the plates of the plurality of glass plates and the plates. Adult.

The glass spacer paper of the present invention is a glass spacer paper used in the lamination of the glass sheets as described, and can be used for lamination of various glass sheets. Further, it is preferably used for laminating a glass plate for forming wiring, electrodes, circuits, and partition walls on the surface, and particularly preferably a laminated glass plate (glass substrate) for FPD, such as a plasma display or a liquid crystal display. Glass between glass plates Glass spacer paper.

The glass spacer paper of the present invention has a glass spacer paper having a content of an organic compound of a ruthenium atom (a ratio of the mass of the organic compound having a ruthenium atom to the mass of the glass spacer) of 3 ppm or less.

In the glass spacer paper of the present invention, when the components such as wiring, electrodes, circuits, and partition walls are formed on the surface of the glass plate for FPD or the like which is laminated using the glass spacer paper, the wiring is greatly reduced in wiring. Or bad on the electrode, etc.

As described above, there have been various proposals for suppressing the transfer of the transfer from the glass spacer to the glass sheet.

However, according to the review by the inventors of the present invention, the FPD is formed by using a glass plate or the like to form a glass plate such as a wiring or an electrode on the surface, and even if the transfer from the glass spacer paper to the glass plate is suppressed, the surface is formed. When wiring or electrodes are used, there is still a low probability that wiring will occur.

The inventor of the case, etc., has repeatedly devoted himself to the discussion for this reason. As a result, it was found that an organic compound having a ruthenium atom transferred from the glass spacer to the glass plate was a major cause of defects such as wiring.

As is well known, in the production of pulp which will be the raw material of the glass spacer paper, such as the evaporation step or bleaching step of manufacturing chemical pulp, the deinking step of manufacturing waste paper pulp, etc., steaming assistance is used as needed. Various agents such as agents, antifouling agents, deinking agents, antifoaming agents, surfactants, and bleaching agents. Further, in the papermaking step (papermaking step) of the glass spacer paper, the emulsification of the member to be contacted with the glass spacer paper (wet paper/paper) is also carried out as needed, as an adjustment agent for the detergent and the additive. Agents and dispersants Kind of medicine. Among these agents, there are also many organic bismuth compounds.

Typically, the agents used in the manufacturing steps of the pulp and glass spacer paper can be removed by washing. However, organic germanium compounds mostly have a certain degree of viscosity and are therefore difficult to remove completely and will remain on the finished glass spacer paper.

Therefore, when laminating between the glass plate and the plate in the glass spacer paper, the organic ruthenium compound remaining on the glass spacer paper is transferred to the glass plate to become a foreign matter.

On the other hand, in recent years, the spatial resolution and the like of the FPD have become high, and as a result, wirings, electrodes, and the like formed on the glass plate have also become fine. For example, in the case of wiring, it is required to form a wiring having a width of about 3 to 5 μm at a pitch (pitch) of about 50 to 200 μm.

However, according to the review by the inventors of the present invention, even when the micro-organic compound is present on the surface of the glass sheet, the film formation of the metal thin film (metal compound film) which is to be a wiring is formed. And the main cause of pattern formation under etching.

Moreover, in the case of a liquid crystal display, even if there are only some micro organic cerium compounds on the surface of the glass plate, the black matrix of the filter plate is uneven.

Therefore, once the organic germanium compound is moved from the glass spacer to the glass plate with transfer or the like, the transferred organic germanium compound becomes a foreign matter, and a component such as a wiring or an electrode or a filter is formed on the glass plate. One of the major causes of bad timing.

The foregoing organic ruthenium compounds are various in variety, and most of them are contained in defoaming. In the agent, polyoxymethylene (polysiloxane (organopolyoxyalkylene) having an organic functional group) is easily transferred to a glass plate, and wiring or electrode defects are likely to occur. In the case of polyoxymethylene, especially when polydimethylsiloxane or the like is transferred onto a glass plate, wiring or electrode defects are more likely to occur.

Further, in the papermaking step, the amount of polyfluorene oxide contained in the glass spacer paper can be reduced, but it is preferable to use a small amount of the antifoaming agent or the like at the stage of the pulp. The polyoxyl content of the pulp is preferably 10 ppm or less, preferably 5 ppm or less, more preferably 3 ppm or less, and particularly preferably 1 ppm or less.

The inventors of the present invention further reviewed and found that the content of the organic cerium compound of the glass spacer paper was set to 3 ppm or less, thereby greatly reducing the organic bismuth compound caused by the transfer from the glass spacer to the glass plate. The occurrence of wiring failure, etc.

In other words, by using the glass spacer of the present invention, fine wiring can be formed on the surface of the glass plate even if high-cleaning or the like for removing foreign matter composed of an organic cerium compound on the surface of the glass plate for FPD or the like is not performed. When an element such as an electrode, a circuit, a partition, or the like, or a black matrix in which a filter is formed, the defects such as wiring such as disconnection due to an organic germanium compound and the unevenness of the black matrix are largely suppressed. Therefore, by using the glass spacer paper of the present invention, the production cost of the FPD or the like can be reduced, and the yield can be improved.

As described above, the glass spacer of the present invention is a glass spacer having a content of the organic cerium compound of 3 ppm or less.

When the content of the organic ruthenium compound exceeds 3 ppm, the transfer of the organic ruthenium compound from the glass spacer to the glass plate cannot be sufficiently suppressed, and the film cannot be sufficiently obtained. The effect of occurrence of wiring failure or the like caused by the organic bismuth compound transferred from the glass spacer to the glass plate can be reduced.

In the glass spacer of the present invention, the content of the organic cerium compound is preferably 2 ppm or less, preferably 1 ppm or less, and particularly preferably 0.5 ppm or less.

By setting the content of the organic cerium compound in the glass spacer to the above range, it is possible to more suitably suppress the occurrence of defects such as formation of wiring or electrodes on the surface of the FRD glass plate or the like using the glass spacer of the present invention.

Further, in the glass spacer paper of the present invention, the content of the organic cerium compound is preferably as small as possible. That is, in the glass spacer of the present invention, the lower limit of the content of the organic cerium compound is not limited.

However, it is difficult to completely remove the organic cerium compound from the glass spacer paper, and the glass spacer paper having a very small content of the organic cerium compound is laborious to manufacture and costly. In view of this point of view, in the glass spacer of the present invention, the content of the organic cerium compound is preferably 0.05 ppm or more.

The glass spacer of the present invention is basically a well-known glass spacer paper used for lamination of a glass plate, except that the content of the organic cerium compound is 3 ppm or less.

Therefore, the glass spacer of the present invention can utilize a well-known glass spacer paper composed of various raw materials: kraft pulp (KP), sulfite pulp (SP) and sodium alkali pulp (AP); Semi-chemical pulp such as chemical pulp (SCP) and chemically ground wood pulp (CGP); mechanical pulp such as ground wood pulp (GP), hot-milled mechanical pulp (TMP, BCTMP) and finely ground wood pulp (RGP); Non-wood fiber pulp, such as paper mulberry, Huang Ruixiang (scented), hemp and kenaf (kenaf); and synthetic pulp. Furthermore, this issue The glass spacer paper of the present invention may be a raw material of the mixture, or may be a raw material containing cellulose or the like.

Moreover, the raw materials may be waste paper, may be virgin pulp, and may also be a mixture of waste paper and virgin pulp. Among them, raw pulp is preferred.

Here, in the case of the glass spacer paper of the present invention, it is preferable to use a pulp made of a polyfluorinated defoaming agent (defoaming agent containing polyoxymethylene) as a raw material regardless of the type of pulp. When the polyfluorene-based defoaming agent is transferred to a glass plate, it is a major cause of defects such as wiring or electrodes.

Further, a pulp prepared by using an antifoaming agent containing polydimethylsiloxane is particularly suitable as a raw material for the glass spacer of the present invention.

The glass spacer paper of the present invention can be basically produced by a paper making method of a well-known glass spacer paper.

A suitable example is a manufacturing method in which a pulp which is a raw material is washed before the preparation of the raw material liquid of the paper, and a spray cleaning before at least one of the drying step and the middle of the drying process. The manufacturing method is an example.

1 and 2 conceptually show an example of a manufacturing apparatus for a glass spacer paper (paper-making apparatus for glass spacer paper), which is a user of the present invention.

As shown in Fig. 1, a paper stock solution (a liquid in which the pulp is diluted with water) is supplied from the headbox 12 in a sheet form to a net 16 provided under the wire part 14. The paper raw material liquid supplied to the lower net 16 is then sandwiched between the lower net 16 and the net 18, thereby expanding to a uniform thickness and simultaneously dehydrating to become wet paper (paper).

The net 16 and the net 18 under the net portion 14 are formed as a seamless strip-shaped permeable film. Specifically, it is a mesh made of plastic or metal material, or a seamless tape made of felt made of natural fiber or synthetic fiber.

The lower net 16 and the net 18 are erected on a plurality of rollers, and the driving force of the motor (not shown) is transmitted to the driving rollers of the plurality of rollers to be circulated at a predetermined speed.

The wet paper formed on the net portion 14 is transported to a press part 20 having a press roll, a belt-like strip, and a press roll pair, and is simultaneously subjected to re-dehydration and pressurization. .

The wet paper that has passed through the pressurizing unit 20 is transported to the drying unit 24 composed of a plurality of rollers, and when passed through the drying unit 24, it is dried in a gas atmosphere of, for example, about 120 °C.

The paper dried by the drying unit 24 is transported to the calender part 26, and the calendering process is performed by holding the crucible roller or the like to smooth the inside of the watch. Further, a coating portion may be provided between the drying portion 24 and the calender portion 26 as needed, and a coating material or the like may be applied to the surface of the smoothed paper.

The paper which has been subjected to the calendering treatment in the calendering portion 26 is taken up as a glass spacer paper by the winding frame 28, and is formed into a roll shape (hereinafter, it is defined as a large base paper roll 30).

The glass spacer paper can usually be directly shipped in the state of a large original paper roll 30, but usually, for example, the glass spacer paper is cut into a width corresponding to the product and wound up, and the winding is formed to have a predetermined length of about 8000 to 10000 m. The paper roll 32 of the size glass spacer paper is then shipped. That is, usually, the glass spacer paper is divided into small portions from the large base paper roll 30 and then shipped.

Specifically, as shown conceptually in Fig. 2, the glass spacer paper is fed from the large base paper roll 30, cut (cut in the long direction) by a cutter 34 to a predetermined width, and is fed by a winder 36. Rolling. When the glass spacer paper fed from the large base paper roll 30 reaches a predetermined length, it is cut into a predetermined length (cutting in the width direction) by the cutter 34, and is formed by winding a glass spacer paper having a predetermined width and a long length. The paper roll 32 is re-shipped to the glass factory of the use side.

The long-sized glass spacer paper wound by the paper roll 32 is cut at a shipping destination into a single sheet (rectangular shape) corresponding in size to the laminated glass sheet, and interposed between the laminated glass sheets.

In addition, the work of cutting into a single sheet can also be carried out at a manufacturer of glass spacer paper.

The method for producing the glass spacer of the present invention is exemplified by the following method: in the manufacturing apparatus (papermaking step) of the glass spacer paper, the cleaning is performed before the paper raw material liquid supplied to the headbox 12 is prepared. It will become the pulp of raw materials.

According to the review by the inventors of the present invention, it is presumed that the organic ruthenium compound transferred from the glass spacer to the glass plate is often caused by impurities adhering to the pulp to be used as a raw material. Therefore, the pulp which is a raw material is put into a solvent, stirred, placed, or the like, and the organic ruthenium compound adhering to the pulp is dissolved in a solvent, and then the pulp is washed with a solvent by filtration.

In this manner, the paper stock solution is prepared by using the solvent-washed pulp, and is supplied to the headbox 12 to manufacture a glass spacer. Thereby, the glass spacer of the present invention having an organic cerium compound of 3 ppm or less can be produced.

The solvent used for the washing may be an organic solvent or the like which can dissolve the organic ruthenium compound which is presumed to adhere to the pulp.

For example, an aromatic hydrocarbon solvent (such as toluene or xylene) can be mentioned. Further, the solvent may be diluted with an alcohol such as ethanol as needed, and then used. In terms of volume ratio of dilution by alcohol or the like, it is preferably 20 to 80 times, and 40 to 60 times is preferable.

Further, the cleaning conditions of the speed and time of the stirring, the immersion time of the pulp in the solvent, the amount of the solvent relative to the amount of the pulp, and the temperature of the solvent are as follows: the thickness of the paper, the type of the paper (raw material, etc.), and the solvent pair. The solubility of the organic ruthenium compound or the like may be appropriately set so that the organic ruthenium compound contained in the glass spacer is 3 ppm or less.

Further, the cleaning of the pulp as described above can be carried out a plurality of times.

Moreover, as another manufacturing method of the glass spacer paper of this invention, the following method is used as an example, in the manufacturing apparatus of the said glass spacer paper, before the drying part 24 and / or the drying part 24 At least one of the papers is sprayed and washed.

In other words, at least one of the drying unit 24 (between the pressurizing unit 20 and the drying unit 24) and the drying unit 24 is provided with a water sprinkler so that at least one of the drying and the drying can be preliminarily attached. The solvent is dissolved in a solvent in which the organic cerium compound is dissolved on the paper. Thereby, the foreign matter of the organic cerium compound contained in the paper can be dissolved and removed, and the glass spacer paper of the present invention having an organic cerium compound of 3 ppm or less can be produced.

Further, the washing water sprayer before the drying unit 24 and in the drying unit 24 may be provided in a plurality of places in the paper transport direction.

The solvent used for the spray cleaning may be appropriately selected from the previous pulp cleaning to dissolve an organic solvent or the like which is presumably attached to the organic ruthenium compound on the paper. For example, the same solvent as previously used in pulp cleaning. Further, as described above, the solvent may be diluted with ethanol or the like as needed. The dilution by ethanol or the like is preferably 20 to 80 times in volume ratio, and is preferably 40 to 60 times.

In addition, the spray cleaning conditions of the amount of the solvent used for the spray cleaning and the ejection speed of the solvent are as follows: the thickness of the paper, the conveyance speed of the paper, the conveyance path, the type of paper (raw material, etc.), and the solvent. The solvency of the organic ruthenium compound or the like may be appropriately set so that the organic ruthenium compound contained in the glass spacer is 3 ppm or less.

Further, in the other manufacturing method of the glass spacer of the present invention, it is also possible to use a method in which an organic ruthenium compound which has been dissolved and presumably adhered to paper is provided before the drying portion 24 or in the drying portion 24. The water tank of the solvent dissolves and removes foreign matter of the organic cerium compound contained in the paper by passing the paper therethrough.

The glass spacer of the present invention can be produced by cleaning the pulp, washing the paper, and washing with a water tank.

Further, after washing the pulp or paper with a solvent, the pulp and the paper may be washed with pure water such as pure water.

The glass plate package of the present invention is a glass plate package (glass plate laminate) in which a plurality of sheets of glass sheets are laminated between the sheets of the glass spacer of the present invention.

Figure 3 conceptually shows one of the glass plate bundles of the present invention example. In addition, FIG. 3 is a view (side view) of the glass plate package body viewed from the surface direction of the glass.

The glass plate package 50 shown in Fig. 3 is formed by laminating a plurality of glass sheets G on a bracket 52. The bracket 52 is a well-known bracket for glass sheet packaging, and has a base 54, an inclined table 56 provided on the upper surface of the base 54 in a standing position, and a mounting table 58 placed on the upper surface of the base 54.

One side in the horizontal direction of the inclined table 56 (contact surface with the glass plate G = back surface) is inclined with respect to the vertical direction (hereinafter, also referred to as "inclined surface"). The angle of the inclined surface may be an angle at which the laminated glass sheet G can be stably loaded, stored, and transported, and is usually 85° or less with respect to the horizontal direction, and is preferably, for example, 85° to 70°.

Further, the upper surface of the mounting table 58 is inclined in a state of being lowered toward the inclined table 56 with respect to the horizontal direction. As an example of the drawing, the upper surface of the mounting table 58 is in a state of 90° with respect to the inclined surface of the tilting table 56.

In the bracket 52, the glass plate G is placed on the upper surface of the mounting table 58 and is placed on the inclined surface of the tilting table 56.

Further, the glass spacer paper 60 of the present invention is interposed between the glass sheets G. The glass spacer paper 60 is larger in size than the glass sheet G, and is interposed between the glass sheets G in such a manner as to cover the entire surface of the glass sheet G.

In addition, between the glass plate G and the inclined table 56 which are laminated, the glass spacer paper 60 of the present invention can also be interposed therebetween, and the surface of the frontmost glass plate G can also be covered with the present invention. Glass spacer paper 60.

The glass sheet package 50 of the present invention is formed in the manner described above. At this point, the reinforcing plate can be further abutted to the foremost glass as needed. The glass plate G (glass spacer paper) is erected with a strip-shaped body and fixed to the inclined table 56, and may be covered with a cover to cover all the glass sheets G.

Further, the glass sheet package of the present invention is not limited to the glass sheet G stacked up as in the glass sheet package 50 shown in FIG. The glass plate package of the present invention may be a horizontally laminated glass plate G, for example, a plate-like container as shown in Japanese Laid-Open Patent Publication No. 3165973.

In the glass plate package of the present invention, various known glass plates are exemplified as the glass plate G. Among them, a glass plate having elements such as wirings or electrodes as described above is preferably used, and a glass plate for FPD is particularly suitable.

In the above, the glass spacer paper and the glass sheet package of the present invention have been described in detail. However, the present invention is not limited to the above examples, and various modifications and changes can be made therein without departing from the scope of the invention.

Example

Hereinafter, the present invention will be further described in detail by way of examples, but the present invention is not limited by the examples.

[Example 1]

The raw pulp to be a raw material was placed in toluene diluted to 50 times (volume ratio) by ethanol (the ratio of the pulp to the solvent was 100:1 by mass ratio), and the mixture was stirred at room temperature for 10 hours, and then the solvent was filtered. The pulp which will be the raw material after the cleaning is obtained.

Next, the washed pulp was used as a raw material, and a glass spacer paper was produced using the apparatus for manufacturing a glass spacer as shown in FIG. 1 and FIG.

Cut the prepared glass spacer paper (thickness 0.08mm) into about 1cm The ingredients were extracted from the glass spacer paper using hexane and using a Soxhlet extractor for about an hour and a half. The obtained extract was concentrated to dryness by a rotary evaporator, and redissolved in 1 mL of heavy chloroform as a sample. The apparatus was analyzed by NMR spectrum (nuclear magnetic resonance spectrum) using a Nuclear Magnetic Resonance (manufactured by Bruker BioSpin K.K., AVANCE 500 type) to specify an organic ruthenium compound. The results showed that the content of the organic cerium compound was 2 ppm.

[Comparative Example 1]

A glass spacer paper was produced in the same manner as in Example 1 except that the cleaning of the pulp to be a raw material was not performed. The glass spacer paper (thickness 0.08 mm) produced was analyzed in the same manner as in Example 1, and the content of the organic cerium compound was found to be 4 ppm.

[Embodiment 2]

In the apparatus for manufacturing a general glass spacer paper shown in Figs. 1 and 2, a water sprinkler for washing paper is provided at two places in the drying unit 24.

Using the above-described manufacturing apparatus, raw paper pulp was used as a raw material, and the paper was washed in the drying section 24 by using a toluene diluted with ethanol to 50 times (volume ratio), and dried to produce a glass spacer.

The glass spacer paper (thickness 0.08 mm) produced was analyzed in the same manner as in Example 1 to find that the content of the organic cerium compound was 1 ppm.

[Comparative Example 2]

A glass spacer paper was produced in the same manner as in Example 2 except that the paper was not washed in the drying unit 24.

The glass spacer paper (thickness 0.08 mm) produced was analyzed in the same manner as in Example 1 to find that the content of the organic cerium compound was 4 ppm.

[Performance Evaluation]

In the glass spacer paper produced in the above Examples 1 and 2 and Comparative Examples 1 and 2, a glass plate for FPD (glass AN100 manufactured by Asahi Glass Co., Ltd.) having a thickness of 0.5 mm and a size of 1500 × 1300 mm was used. In the meantime, a glass plate laminate having a plurality of glass sheets laminated is formed.

The glass laminate was produced in accordance with each of the five carrier parts (2000 sheets of glass sheets) of each of the glass spacers of Examples 1 and 2 and Comparative Examples 1 and 2.

This glass plate laminate was placed in a general glass plate binding bracket to form a glass plate package.

The glass plate bales made in this way were shipped from Taiwan to Japan by ship.

From the glass plate package to be shipped to Japan, 100 glass plates were randomly selected from the respective glass plate laminates.

Next, on the surface of all the selected glass sheets, linear wiring having a width of 5 μm was formed at intervals of 80 μm by a conventional method.

Check the disconnection condition of the formed wiring.

As a result, in the glass sheets in which the glass spacer paper sheets of Examples 1 and 2 were used, no disconnection of the wiring was observed in all the glass sheets.

On the other hand, in the glass plate in which the glass spacer paper sheets of Comparative Examples 1 and 2 were used, it was confirmed that all the glass plates were broken.

As is clear from the above results, the glass spacer of the present invention has an effect of suppressing defects such as breakage due to contamination.

Industrial availability

The glass spacer paper of the present invention can greatly suppress the occurrence of defects such as wiring caused by contamination of the glass spacer by the transfer of the glass spacer, and can reduce the production cost of the FPD or the like, and improve the yield, etc., so that it can be used as the FPD. The glass plate of the glass plate is bundled.

In addition, the entire contents of the specification, the scope of the application, the drawings and the abstract of the Japanese Patent Application No. 2012-280085, filed on Dec. reveal.

50‧‧‧glass plate bundle

52‧‧‧ bracket

54‧‧‧Abutment

56‧‧‧ tilting table

58‧‧‧ mounting table

60‧‧‧glass spacer paper

G‧‧‧glass plate

Claims (10)

A glass spacer paper is obtained by laminating a plurality of glass sheets between the glass sheets; the glass spacer paper is characterized in that the content of the organic compound having a cerium element is 3 ppm or less. The glass spacer paper of claim 1, wherein the aforementioned organic compound contains polyfluorene oxide (organopolyoxyalkylene). The glass spacer paper of claim 1 or 2, wherein the raw material of the glass spacer paper is a pulp having a polyoxyl content of 10 ppm or less. The glass spacer paper according to any one of claims 1 to 3, wherein the raw material of the glass spacer paper is selected from the group consisting of chemical pulp, semi-chemical pulp, mechanical pulp, non-wood fiber pulp and synthetic pulp. At least one type of pulp. The glass spacer paper according to any one of claims 1 to 4, wherein the paper has a thickness of 0.05 to 0.10 mm. A papermaking method for producing a glass spacer according to any one of claims 1 to 5, characterized in that it has a step of dissolving and removing an organic compound having a cerium element attached to pulp or paper, and the step is selected At least one of the groups consisting of the following steps: the step of washing the pulp with an organic solvent, the pulp will be the raw material of the glass spacer paper; the glass spacer paper is treated with the organic solvent before and/or after drying a step of performing a spray cleaning; and a step of passing the glass spacer paper through a water tank filled with an organic solvent Step. The papermaking method according to claim 6, wherein the organic solvent is an organic solvent which can dissolve an organic compound having a cerium element, or a solvent which has been diluted with the organic solvent. The papermaking method according to claim 7, wherein the organic solvent is an aromatic hydrocarbon-based organic solvent. A glass sheet bundle body obtained by laminating between a plurality of sheets of glass sheets and a sheet of the glass spacer paper according to any one of claims 1 to 5. The glass sheet package of claim 9, wherein the glass sheet is a glass sheet for a flat panel display.