TW201425248A - Glass spacer paper and glass plate bundling body - Google Patents

Abstract

A glass spacer paper is used for the laminate of glass plates to prevent metal foreign bodies transferred from the glass spacer paper from incurred failure of wiring already formed on the glass plates. This invention sets the content of metal elements to 0.1 mass% or less or sets the gas permeability to 10 seconds or more to solve the aforesaid subject.

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

A glass plate for FPD (Flat Panel Display) such as a glass plate for a building, a glass plate for an automobile, a glass plate for a plasma display, or a glass plate for a liquid crystal display may cause defects and foreign matter due to the surface during storage and transportation. The surface is subjected to contamination or the like to easily cause product defects.

In particular, a glass plate (glass substrate) for FPD has fine electrical wiring (hereinafter also referred to as "wiring"), electrodes, circuits, and partition walls, so that even a slight flaw on the surface is observed. Or pollution, it will also become a cause of badness such as wire breakage or short circuit. Therefore, a high surface cleanliness is sought 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 carrier for packaging or the like. At this time, the flaws on the surface of the glass plate are mostly caused by the friction between adjacent glass plates.

Moreover, the contamination on the surface of the glass plate is often caused by the adhesion of contaminants such as organic substances in the storage environment and the transportation environment to the surface of the glass plate. raw.

The contaminant is difficult to remove from the surface of the glass plate by washing only with water. Therefore, the removal of pollutants must be carried out, for example, using an acid or alkali. 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 cleaning is performed, it is difficult to completely remove the contaminant from the surface of the glass plate.

As a method for preventing the flaws and contamination of the surface of the glass sheet, the method of separating the surfaces of the adjacent glass sheets by sandwiching the paper between the laminated glass sheets is to use the so-called glass spacer paper. Among the methods in it.

However, in order to separate the glass sheets between the glass sheets, the glass spacer paper is in direct contact with the surface of the glass sheets. Therefore, the resin component or the like existing on the surface of the glass spacer paper is transferred to the surface of the glass plate to contaminate the surface of the glass plate, causing problems such as paper pattern, yellowing, and staining on the glass plate.

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

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

Further, Patent Document 3 discloses a glass plate package in which a glass spacer having a content of a higher saturated fatty acid of 0.08% by mass or less is used, and a glass plate is bundled.

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

According to the glass spacer paper, the resin component contained in the glass spacer paper can be reduced to the surface of the glass sheet, and contamination on the surface of the glass sheet can be suppressed.

However, in the case of the glass spacers which are used for forming a component such as a wiring or an electrode on the surface of a glass plate for FPD or the like, it is necessary to sufficiently suppress the glass caused by the transfer from the glass spacer paper. It is difficult to cause defects such as fine wiring, electrodes, and circuits due to contamination on the surface of the board.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art described above, and to provide a glass spacer paper which is capable of greatly suppressing transfer due to self-glass spacer paper when an element such as a wiring or an electrode has been formed on the surface of the glass sheet. The occurrence of component defects such as wire breakage or short circuit caused by the contamination; and the glass plate package body using the glass spacer paper.

In order to achieve the foregoing object, the first aspect of the glass spacer paper of the present invention provides a glass spacer paper which is obtained by laminating a plurality of glass sheets. The content between the glass plates is characterized in that the content of the metal element is 0.1% by mass or less.

In the first aspect of the glass spacer of the present invention, the air permeability is preferably 10 seconds or longer.

Moreover, in the second aspect of the glass spacer of the present invention, a glass spacer paper is provided which is formed by laminating a plurality of glass sheets and having a gas permeability of 10 seconds or more.

In the second aspect of the glass spacer of the present invention, the content of the metal element is preferably more than 0.1% by mass.

Further, the air permeability is preferably 20 seconds or more.

Further, in the first aspect and the second aspect of the glass spacer of the present invention, at least one of titanium, aluminum, iron, zinc, chromium, copper, and antimony may be used as the metal element contained. .

Further, the glass plate packaging system of the present invention provides a glass plate package body, which is characterized in that the glass spacer paper of the present invention is laminated between a plurality of glass plates and a plate. By.

In the glass plate package of the present invention, the glass plate is preferably a glass plate for a flat display.

According to the glass spacer of the present invention, when a thin wiring or an electrode or the like is formed on the surface of the glass plate which is laminated between the glass plate and the plate in the glass spacer, the element can be greatly suppressed. Defects due to components such as wire breakage or short circuit caused by metal foreign matter transferred from the glass spacer paper. Therefore, by using the glass spacer paper of the present invention, The yield is increased, and the production cost of FPD and the like can be reduced.

10‧‧‧Glass spacer manufacturing device

12‧‧‧Headbox

14‧‧‧Line Department

16‧‧‧Offline

18‧‧‧Online

20‧‧‧ Pressurization

24‧‧‧Drying Department

26‧‧‧Department of Twilight

28‧‧‧Rolling frame

30‧‧‧ Large rolls

32‧‧‧ 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 view conceptually showing a part of an example of a manufacturing apparatus for glass spacer paper.

Fig. 2 is a view schematically showing a part of an example of a manufacturing apparatus for glass spacer paper.

Fig. 3 is a view conceptually 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 stored and transported in a state in which a plurality of glass plates are interposed with glass spacer paper and laminated to form a glass plate package (glass laminate).

The glass spacer paper of the present invention is a glass spacer paper for lamination of the glass sheets as described, and can be utilized for lamination of various glass sheets. Further, it is preferable to use a laminate of a glass plate on which a component such as a wiring, an electrode, a circuit, and a partition wall is formed on the surface, and particularly preferably a laminated glass plate (glass substrate) for a FPD such as a plasma display or a liquid crystal display. A glass spacer paper between the glass sheets.

In the glass spacer of the present invention, the content of the metal element in the first aspect (the mass ratio of the metal element to the mass of the glass spacer) is 0.1% by mass or less. Moreover, the second aspect of the glass spacer of the present invention is a glass spacer having a gas permeability of 10 seconds or more.

The glass spacer paper of the present invention has a structure as described above, and when components such as wirings, electrodes, circuits, and partition walls are formed on the surface of a glass plate for FPD or the like which is formed by laminating the glass spacer paper, Reduce the occurrence of defects such as wiring and electrodes.

As described above, there has been various proposals for the transfer of the resin component or the like from the glass spacer to the glass sheet.

However, according to the review by the inventors of the present invention, in the glass plate in which the components such as the wiring and the electrode are formed on the surface of the glass plate or the like for FPD, the transfer of the resin component from the glass spacer to the glass plate is suppressed. However, when wiring, electrodes, and the like are formed on the surface, defects such as wiring may occur without being likely to be low.

The inventor of the case, etc., has repeatedly devoted himself to the discussion for this reason. As a result, it was found that the metal foreign matter transferred from the glass spacer to the glass plate is a major cause of defects such as wiring.

As is well known, in recent years, the spatial resolution of FPD has become high, and as a result, wirings and electrodes formed on a glass plate have also become fine. For example, as long as it is wiring, it is required to form wirings having a width of about 3 to 5 μm at intervals of about 50 to 200 μm.

However, according to the review by the inventors of the present invention, when the fine wiring or the like is formed, even if there is only a slight amount of metal foreign matter on the surface of the glass sheet, the metal thin film (metal compound thin film) which prevents the formation of the wiring into a wiring and the use thereof The main reason when etching a pattern or the like. Therefore, once the metal is transferred from the glass spacer to the glass plate, the metal becomes a foreign matter, and becomes a major defect in the case where wiring, electrodes, and the like are formed on the glass plate. because.

The inventors of the present invention have further studied and studied, and found that the content of the metal element of the glass spacer paper is 0.1% by mass or less, or the air permeability of the glass spacer paper is 10 seconds or more. The occurrence of defects such as wiring caused by metal foreign matter transferred from the glass spacer to the glass plate is reduced.

In other words, by using the glass spacer of the present invention, fine wiring, electrodes, circuits, and partition walls are formed on the surface of the glass plate even without high-level cleaning or the like for removing surface metal foreign matter such as a glass plate for FPD. When the components are equal to each other, it is possible to greatly suppress the occurrence of defects due to wiring or the like of the metal foreign matter. 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 first aspect of the glass spacer of the present invention is a glass spacer having a metal element content of 0.1% by mass or less.

When the content of the metal element exceeds 0.1% by mass, the transfer of the metal from the glass spacer to the glass sheet cannot be sufficiently suppressed, and the wiring caused by the metal foreign matter transferred from the glass spacer to the glass sheet cannot be sufficiently obtained. The effect of component failure such as disconnection or short circuit.

Further, in the first aspect of the glass spacer of the present invention, the metal element also contains a semimetal. Further, in the present invention, the "semimetal" means six elements of boron, ruthenium, osmium, arsenic, antimony and bismuth.

Further, in the first aspect of the glass spacer paper of the present invention and the second aspect described later, specific examples of the metal element to be contained include at least titanium, aluminum, iron, zinc, chromium, copper and bismuth. An element.

In the glass spacer of the present invention, the content of the metal element is preferably 0.07% by mass or less, and preferably 0.05% by mass or less.

By setting the content of the metal element of the glass spacer paper to the amount, it is possible to more suitably suppress the occurrence of disconnection and short-circuiting when wiring, electrodes, etc. are formed on the surface of the FRD glass plate or the like using the glass spacer of the present invention. The components are not good.

Further, in the glass spacer paper of the present invention, the lower the content of the metal element, the better. That is, in the glass spacer paper of the present invention, the lower limit of the metal element content is not limited.

However, glass spacer paper having a very small content of metal elements (for example, close to 0% by mass) is laborious and costly to manufacture. In view of this point of view, in the glass spacer of the present invention, the content of the metal element is preferably 0.03% by mass or more. Further, the type of the metal element contained in the glass spacer of the present invention is not particularly limited.

Here, in the first aspect of the glass spacer of the present invention, the air permeability is preferably 10 seconds or more, and more preferably 20 seconds or more. The air permeability will be shown later.

By setting the air permeability to 10 seconds or longer, and particularly to 20 seconds or less, the effect of adding the metal element content of 0.1% by mass or less as described above and the effect of the enclosing effect described later can be used. It is more suitable to suppress the transfer of the metal from the glass spacer to the glass plate.

The first aspect of the glass spacer of the present invention is basically a well-known glass spacer for laminated glass sheets, except that the content of the metal element is 0.1% by mass or less.

Therefore, the glass spacer paper of the present invention can utilize a well-known glass spacer paper composed of various raw materials: kraft pulp (KP), sulfite pulp (SP), and chemical pulp of sodium alkali pulp (AP), Mechanical pulp such as semi-chemical pulp (SCP) and chemically ground pulp (CGP) such as semi-chemical pulp, ground wood pulp (GP), hot-milled mechanical pulp (TMP, BCTMP) and finely ground wood pulp (RGP) Non-wood fiber pulp and synthetic pulp, which are fragrant, fragrant, hemp, and kenaf. Further, the glass spacer paper of the present invention may be a raw material of the mixture, or a material containing cellulose or the like may be used as a raw material.

Moreover, the raw materials may be waste paper, may be virgin pulp, or may be a mixture of waste paper and virgin pulp. It is better to use original pulp.

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

As a suitable example, a manufacturing method of performing spray cleaning on at least one of the drying step and the middle of the drying process, and a manufacturing method of performing ultrasonic irradiation and suction after drying are exemplified. .

1 and 2 are conceptual examples showing a general apparatus for manufacturing a glass spacer paper (a general paper separating apparatus for glass spacer paper).

As shown in Fig. 1, the paper stock solution (liquid which has been diluted with water by the pulp) is supplied from the headbox 12 in a sheet form to the lower line 16 provided on the line portion 14. The paper stock liquid supplied to the lower thread 16 is then sandwiched by the lower thread 16 and the upper thread 18, thereby being stretched to a uniform thickness and dehydrated to become wet paper (paper).

The lower line 16 and the upper line 18 of the line portion 14 are formed into a seamless strip shape. Permeable film. Specifically, it is a mesh made of plastic or metal material, or a felt-free seamless belt composed of natural fibers or synthetic fibers.

The lower thread 16 and the upper thread 18 are erected on a plurality of rollers, and are driven to rotate at a predetermined speed by transmitting the driving force of the motor (not shown) to the driving rollers of the plurality of rollers.

The wet paper formed on the line portion 14 is transported to a press portion 20 having a press roll, a seamless strip-shaped felt, and a pair of press rolls, and is simultaneously dehydrated and pressurized.

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

The paper dried by the drying unit 24 is transported to the calendering unit 26, and the calendering treatment is performed by the crucible roller or the like to smooth the front and back surfaces. 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 subjected to the calendering treatment in the calendering portion 26 is taken up to the reel 28 as a glass spacer paper, and is formed into a roll shape (hereinafter, referred to as a Jumbo roll 30).

Glass spacer paper is usually not shipped directly in the state of a large roll 30. For example, the glass spacer paper is cut and taken up according to the width of the product, and a long strip of glass spacer paper of a predetermined length of about 8000 to 10000 m is wound into a roll 32 and then shipped. That is, the glass spacer paper is divided into small portions from the large roll 30 and then shipped.

Specifically, as shown conceptually in Figure 2, the glass spacer paper is from a large The roll 30 is fed out, cut by the cutter 34 (cut in the longitudinal direction) to a predetermined width, and taken up by the winder 36. When the glass spacer paper fed from the large roll 30 is formed to have a predetermined length, it is cut into a predetermined length (cut in the width direction) by the cutter 34, and the glass spacer paper of a predetermined width and length is wound. The roll 32 is shipped to a glass factory.

The long strip of glass spacer paper wound on the roll 32 is cut at a shipping destination according to a single sheet (rectangular shape) of the laminated glass sheet size, and is interposed between the laminated glass sheets. between.

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

The manufacturing method of the first aspect of the glass spacer paper of the present invention is exemplified by at least one of the drying unit 24 and the drying unit 24 in the manufacturing apparatus (paper making step) of the glass spacer paper. A method in which the paper 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, and the paper is made of at least one of the pre-drying and the drying. Clean the water with a spray. Thereby, the metal spacer and the metal component contained in the paper can be oscillated, and the glass spacer of the present invention having a metal element content of 0.1% by mass or less can be produced.

Further, the washing water sprinkler before the drying unit 24 or in the drying unit 24 may be provided in a plurality of places in the paper conveying direction.

In addition, the spray cleaning conditions of the amount of the washing water used for the spray washing and the spraying speed of the washing water are as long as the thickness of the paper and the paper are transported. The feed speed, the transport path, the type of paper (raw material, etc.), etc., may be appropriately set so that the amount of the metal element contained in the glass spacer paper is 0.1% by mass or less.

As another manufacturing method of the first aspect of the glass spacer of the present invention, at least one of the dried paper and the glass spacer paper (that is, further downstream of the dryer portion 24) is irradiated with ultrasonic waves, and A method of sucking in the vicinity of the sound wave irradiating portion.

For example, in the transport path (one or more locations) of the glass spacer paper between the large roll 30 and the roll 32 shown in FIG. 2, an ultrasonic irradiation device and a suction device are provided for transporting The glass spacer paper illuminates the ultrasonic wave and is sucked by the suction device in the vicinity of the ultrasonic irradiation portion. Thereby, the metal contained in the glass spacer paper and the metal-containing component can be oscillated by the irradiation of the ultrasonic wave, and the foreign matter such as the discharged metal can be removed from the vicinity of the glass spacer paper, whereby the content of the metal element can be produced. 0.1% by mass or less of the glass spacer paper of the present invention.

Ultrasonic irradiation and suction as described above can be carried out at various timings as long as the paper has been dried, except for being between the large roll 30 and the roll 32.

For example, the ultrasonic irradiation and the suction may be performed between the drying unit 24 and the calendering unit 26, and between the calendering unit 26 and the reel 28. Further, after the glass spacer paper is pulled out from the roll 32 and cut into a single sheet shape, or after the glass spacer paper is cut into a single sheet shape, the glass spacer is further used at the use end of the glass spacer paper. The ultrasonic irradiation and the suction are performed.

Further, it is also possible to use these timings to perform ultrasonic irradiation and suction on the dried paper or the glass spacer paper.

In general, the effect of ultrasonic irradiation and suction on dried paper or glass spacer paper is closer to the timing of the use of glass spacer paper (between multiple sheets of glass).

In addition, the ultrasonic wave intensity and the irradiation amount, the suction amount and the extraction force, etc., the conditions for ultrasonic irradiation and suction of the dried paper or the glass spacer paper are the same as described above, as long as the dried paper or the glass spacer paper is used. The thickness, the conveyance speed or the conveyance path of the dried paper or the glass spacer paper, and the type of the dried paper or the glass spacer paper (raw material, etc.) are appropriately set so that the amount of the metal element contained in the glass spacer paper becomes 0.1 mass. The conditions below % can be used.

Further, in the first aspect of the glass spacer of the present invention, it is also possible to perform the shower cleaning, the ultrasonic irradiation, and the suction.

As described above, the second aspect of the glass spacer of the present invention is a glass spacer having a gas permeability of 10 seconds or longer. Here, in the present invention, "breathability" means the air permeability according to "JIS P8117:2009".

Further, the second aspect of the glass spacer of the present invention is the same as the glass spacer of the first aspect except that the air permeability is 10 seconds or more and the metal element content is not limited (i.e., in addition to being breathable). The degree of the degree is the same as that of the well-known glass spacer paper. Therefore, the following description will be mainly based on different points.

As is well known, "breathability" refers to the time until a certain amount of air passes, and the shorter the time, the easier the air will pass.

Therefore, by setting the air permeability of the glass spacer paper to 10 seconds or longer, the metal contained in the glass spacer paper and the metal-containing component can be enclosed inside the glass spacer paper. As a result, as described above, it is possible to significantly reduce the occurrence of defects such as wiring due to metal foreign matter transferred from the glass spacer to the FRD glass plate or the like.

That is, according to the second aspect of the glass spacer of the present invention, even if the glass spacer contains more than 0.1% by mass of the metal element, the metal foreign matter resulting from the transfer from the glass spacer to the glass sheet can be greatly reduced. The resulting wiring or the like is defective.

In the second aspect of the glass spacer of the present invention, if the air permeability is less than 10 seconds, the transfer of the metal and the metal component from the glass spacer to the glass sheet cannot be sufficiently suppressed, and the reduction is not sufficiently obtained from the glass. The effect of the occurrence of defects such as wiring caused by metal foreign matter transferred to the glass sheet by the spacer paper.

In the second aspect of the glass spacer of the present invention, the air permeability is preferably 20 seconds or more, and preferably 25 seconds or more.

By setting the air permeability of the glass spacer paper to this range, it is more preferable to suppress the occurrence of defects in the case where wiring, electrodes, and the like are formed on the surface of the glass sheet using the glass spacer of the present invention.

Further, in the glass spacer paper of the present invention, the higher the air permeability, the better. That is, the glass spacer of the present invention is not limited to the upper limit of the air permeability.

However, as described above, the glass spacer paper having extremely high air permeability is laborious and costly to manufacture. In consideration of this point, the glass spacer of the present invention preferably has a gas permeability of 60 seconds or less.

The second aspect of the glass spacer of the present invention can also be produced by a paper making method using a well-known glass spacer.

As a suitable example, a method of performing calendering in the papermaking step of the glass spacer paper and setting the air permeability of the glass spacer paper to 10 seconds or more can be mentioned. As an example, a method of producing the second aspect of the glass spacer of the present invention is as follows. In the apparatus for manufacturing a glass spacer shown in Fig. 1, the calendering portion 26 is pressed by a calender roll. The adjustment of the calendering treatment conditions such as the adjustment of the tightening force, thereby making the air permeability 10 seconds or longer.

As described above, the first aspect of the glass spacer of the present invention is a glass spacer having a metal element content of 0.1% by mass or less. On the other hand, the second aspect of the glass spacer of the present invention is a glass spacer having a gas permeability of 10 seconds or more.

According to the glass spacer of the present invention, since the transfer of the metal and the metal component from the glass spacer to the glass sheet can be suppressed, the wiring and the electrode of the glass sheet can be greatly reduced. It is caused by defects such as wiring caused by metal foreign matter.

Here, as described above, the effect of suppressing the defects caused by the metal foreign matter transferred from the glass spacer to the glass plate for the FPD or the like can be obtained by applying the coating to the glass spacer paper. The surface of at least one of the surfaces (the surface that is in surface contact with the elements of the glass sheet) (forming a coating), the metal and the metal-containing component are surrounded by the coating material inside the glass spacer.

For example, in the apparatus for manufacturing a glass spacer paper shown in FIG. 1, when the applicator portion is provided between the drying portion 24 and the calender portion 26, It is sufficient to apply the coating here.

As a coating material which can be utilized for this use, the treatment agent containing a water-soluble organic acid salt, etc. are mentioned as an example.

As the treatment agent, for example, a treatment liquid containing at least one of a monosaccharide, an oligosaccharide, and a polysaccharide as a water-soluble organic acid salt, which does not contain an alkali component (10000 ppm or less), may be mentioned. Among them, the water-soluble organic acid salt is preferably a carboxylate of a polysaccharide such as alginic acid, hyaluronic acid, chondroitin or heparin, and a polysaccharide obtained by substituting a carboxyl group with a cation such as an ammonium ion or a metal ion. Carboxylates of the class are preferred, and ammonium alginate is preferred.

This treatment agent is described in detail in International Publication No. 2007-007530.

Further, the coating method of the coating can utilize various well-known methods.

For example, as the coating method, a bar coating method, a knife coating method, a pneumatic knife coating method, a roll coating method, or the like can be given. Further, the coating material may be dried by a warm air or a heater, and light (illumination) or the like may be hardened (crosslinked) by irradiation with light or the like.

The glass plate package of the present invention is a glass plate package (glass plate laminate) obtained by laminating a plurality of glass sheets of the glass spacer of the present invention.

An example of the glass plate package of the present invention is conceptually shown in FIG. In addition, FIG. 3 is a view (side view) of the glass plate package body seen from the surface direction of the glass.

The glass plate package 50 shown in FIG. 3 is laminated on the bracket 52 to stack a plurality of pieces of glass. The board G is the one. The bracket 52 is a well-known bracket for packaging glass sheets, and has a base 54, a tilting 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 and stored and transported, and is usually 85° or less, for example, 85° to 70° with respect to the horizontal direction.

Further, the upper surface of the mounting table 58 is inclined so as to descend toward the tilting table 56 with respect to the horizontal direction. As an example, in the illustrated example, the upper surface of the mounting table 58 is configured to be 90° with respect to the inclined surface of the tilting table 56.

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

Further, the glass spacer paper 60 of the present invention described above is interposed between the glass sheets G. The glass spacer paper 60 is larger 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.

Further, in the same manner, the glass spacer G of the present invention may be interposed between the glass plate G and the inclined table 56, and the surface of the frontmost glass plate G may be similarly used in the present invention. The glass spacer paper 60 is covered.

Thereby, the glass sheet package 50 of the present invention will be formed.

Further, the reinforcing plate may be further abutted to the foremost glass plate G (glass spacer paper) as needed, and the strip-shaped body may be erected and fixed to the inclined table 56, or may cover all the glass plates G. Upper cover.

In addition, the glass plate package of the present invention is not limited to the case where the glass plate G is stacked as in the case of the glass plate package 50 shown in FIG. 3, and may be, for example, Japanese New Registration No. 3165973. In the same manner as the plate-shaped container, the glass plate G is laminated horizontally.

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

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

Example

In the following, the invention will be further illustrated by the examples, but the invention is not limited by the examples.

[Example 1]

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 middle of the drying unit 24.

Using the above-described manufacturing apparatus, raw paper pulp was used as a raw material, and the paper was sprayed and washed with pure water in the drying unit 24, and dried to produce a glass spacer. Further, in this example, the calendering process of the calendering portion 26 is not performed.

The glass spacer paper produced is cut into a single sheet according to the size of a glass plate to be described later, and ICP (Inductively Coupled Plasma) is used. A well-known method of mass spectrometry and ICP emission spectrometry analyzes the content of metal elements in glass spacer paper.

As a result, the content of the metal element of the glass spacer paper was 0.08% by mass.

[Comparative Example 1]

A glass spacer paper was produced in the same manner as in Example 1 except that the paper was not washed in the drying section 24.

After the produced glass spacer paper was subjected to the same analysis as in Example 1, the content of the metal element was 0.15% by mass.

[Embodiment 2]

In the apparatus for manufacturing a general glass spacer paper shown in Figs. 1 and 2, an ultrasonic irradiation device and a suction device are provided between the cutter 34 and the roll 32.

Using the manufacturing apparatus described above, using the virgin pulp as a raw material, the glass spacer paper is irradiated with ultrasonic waves between the cutter 34 and the winder 36, and at the same time, suction is performed near the ultrasonic irradiation position to produce a glass. Spacer paper. Further, in the present example, the calendering process of the calendering portion 26 is not performed.

After the produced glass spacer paper was subjected to the same analysis as in Example 1, the content of the metal element was 0.09% by mass.

[Comparative Example 2]

A glass spacer was produced in the same manner as in Example 2 except that the glass spacer paper was irradiated with ultrasonic waves and suction between the cutter 34 and the winder 36.

After the produced glass spacer paper was subjected to the same analysis as in Example 1, the content of the metal element was 0.12% by mass.

[Example 3]

A glass spacer paper was produced by using a general glass spacer paper manufacturing apparatus shown in Figs. 1 and 2 and using raw pulp as a raw material.

Further, in the present example, the condition of the calendering treatment in the calendering portion 26 is set to 100 kg/cm.

The prepared glass spacer paper was cut into a single sheet according to the size of the glass plate described later, and the air permeability of the glass spacer paper was measured in accordance with "JIS P8117:2009" for 15 seconds.

The glass spacer paper was analyzed in the same manner as in Example 1 as a reference, and the content of the metal element was 0.15% by mass.

[Comparative Example 3]

A glass spacer paper was produced in the same manner as in Example 3 except that the calendering treatment was not performed on the calendering portion 26.

The air permeability of the produced glass spacer paper was measured in the same manner as in Example 3, and was 9 seconds.

The glass spacer paper was analyzed in the same manner as in Example 1 as a reference, and the content of the metal element was 0.15% by mass.

[Performance Evaluation]

A glass plate for FPD having a thickness of 0.5 mm and a size of 1500 × 1300 mm in the glass spacer paper produced in the above Examples 1 to 3 and Comparative Examples 1 to 3 (glass AN100 for liquid crystal manufactured by Asahi Glass Co., Ltd.) Between the two, a glass plate laminate in which a plurality of glass sheets are laminated is formed.

The glass plate laminate was prepared into 5 brackets (2000 sheets of glass sheets) for each of the glass sheets of Examples 1 to 3 and Comparative Examples 1 to 3.

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 transported by ship from Taiwan to Takasago.

From the glass package to the high sand, 100 glass plates were randomly selected from each of the glass laminates.

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

Check the disconnection condition of the formed wiring.

As a result, in the glass sheets laminated using the glass spacer papers of Examples 1 to 3, all of the glass sheets were not broken or short-circuited in the wiring.

On the other hand, in the glass plate which laminated by the glass spacer paper of the comparative example 1-3, the glass plate can see at least one of the disconnection and the short circuit in the wiring.

Based on the above results, the effects of the present invention are clear.

50‧‧‧glass plate bundle

52‧‧‧ bracket

54‧‧‧Abutment

56‧‧‧ tilting table

58‧‧‧ mounting table

60‧‧‧glass spacer paper

G‧‧‧glass plate

Claims (8)

A glass spacer paper is obtained by laminating a plurality of glass sheets between them, and is characterized in that the content of the metal element is 0.1% by mass or less. For example, the glass spacer paper of claim 1 has a gas permeability of 10 seconds or more. A glass spacer paper is obtained by laminating a plurality of glass sheets between them, and is characterized in that the air permeability is 10 seconds or more. The glass spacer paper according to item 3 of the patent application has a metal element content of more than 0.1% by mass. For example, the glass spacer paper of claim 3 or 4 has a gas permeability of 20 seconds or more. The glass spacer paper according to any one of claims 1 to 6, which contains at least one of titanium, aluminum, iron, zinc, chromium, copper and cerium. A glass plate package body characterized in that the glass spacer paper according to any one of claims 1 to 6 is laminated between a plate and a plate of a plurality of glass plates. The glass plate package body of claim 7, wherein the glass plate is a glass plate for a flat display.