JP2004130789A - Glassware with serial number - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide glassware with a serial number which improves working efficiency for forming the serial number on glass, forms the serial number on the glass thereof and facilitates a product control. <P>SOLUTION: The glassware 100 with the serial number consists of multiple glass and has a pair of plate glass sheets 110 and 120 so opposed as to form a hollow layer 140 between them by the medium of columnar pillars 150 as spacers. The outer peripheral edge parts of the paired plate glass sheets 110 and 120 are joined airtightly by a seal frame 130 which is fluidified at a low temperature and further a frame 160 is fitted on the periphery thereof. On the surface of the plate glass sheet 110, a mark 210 and the serial number 220 are formed by a laser beam between a seal plug 180 and the short side of the glass sheet 110 in immediate proximity to the seal plug 180. <P>COPYRIGHT: (C)2004,JPO

Description

The present invention relates to a glass product with a serial number, and more particularly to a glass product with a serial number having a serial number formed on the surface by a laser beam.

In a conventional glass product, for example, a frosted glass product, a pattern by a transparent display portion is formed on the frosted surface by a sandblast method (for example, Patent Document 1), and in a multi-layer glass, the corner angle is formed. The manufacturer, product name, etc. were formed by the sand blasting method.
JP 2002-226233 A

However, the formation of characters, patterns, etc. (hereinafter referred to as “characters”) by the sandblast method applies a template in which the shapes of the characters, etc. are hollowed, to the glass surface, and sandblasts from the template to scrape the glass surface. Therefore, it is necessary to change the template corresponding to each character to be formed and sandblasting, work efficiency is poor, and the size of the character is limited, and the glass product If you try to form a serial number that represents manufacturing information (manufacturing factory, date of manufacture, manufacturing conditions), specifications (dimensions, product type, configuration, etc.), distribution route (sales route), etc., the letters formed will be larger There was a problem that the serial number could not be formed for reasons such as detracting from the beauty of the glass product.

An object of the present invention is to provide a glass product with a serial number that improves the work efficiency of serial number formation on glass, forms a serial number on the glass of a glass product, and facilitates product management.

In order to achieve the above object, the glass product with a serial number according to claim 1 is provided with a glass having a serial number formed by laser light.

The glass product with a serial number according to claim 2 is the glass product with a serial number according to claim 1, wherein the glass has a thermal expansion coefficient of 30 × 10 ^{−7 to} 120 × 10 ⁻⁷ K ^−1. Features.

The glass product with serial number according to claim 3 is the glass product with serial number according to claim 2, wherein the glass has a thermal expansion coefficient of 80 × 10 ^{−7 to} 100 × 10 ⁻⁷ K ^−1. Features.

The glass product with a serial number according to claim 4 is the glass product with a serial number according to any one of claims 1 to 3, wherein the glass has an absorption rate of the laser beam of 80% or more. And

The glass product with a serial number according to claim 5 is the glass product with a serial number according to claim 4, wherein the glass has an absorptance of 90% or more of the laser beam.

The glass product with a serial number according to claim 6 is the glass product with a serial number according to any one of claims 1 to 5, wherein the glass has a softening point of 600 to 800 ° C.

The glass product with a serial number according to claim 7 is the glass product with a serial number according to claim 6, wherein the glass has a softening point of 650 to 750 ° C.

The glass product with a serial number according to claim 8 is the glass product with a serial number according to any one of claims 1 to 7, wherein the serial number is composed of letters having a size of 1 to 10 mm square. And

The glass product with a serial number according to claim 9 is the glass product with a serial number according to claim 8, wherein the serial number is composed of characters having a size of 2 to 6 mm square.

The glass product with a serial number according to claim 10 is the glass product with a serial number according to any one of claims 1 to 9, wherein the serial number is drawn with a line having a width of 0.1 to 0.5 mm. It is characterized by consisting of letters.

The glass product with a serial number according to claim 11 is the glass product with a serial number according to claim 10, wherein the serial number is made of characters drawn with a line having a width of 0.2 to 0.4 mm. And

The glass product with a serial number according to claim 12 is the glass product with a serial number according to any one of claims 1 to 11, wherein the serial number is based on characters drawn with a line having a depth of 50 to 200 µm. It is characterized by comprising.

The glass product with a serial number according to claim 13 is the glass product with a serial number according to claim 12, wherein the serial number is composed of characters drawn with a line having a depth of 80 to 150 μm.

The glass product with a serial number according to claim 14 is the glass product with a serial number according to any one of claims 1 to 13, wherein the serial number is formed inside the glass.

The glass product with a serial number according to claim 15 is the glass product with a serial number according to any one of claims 1 to 13, wherein the serial number is formed on a surface of the glass.

The serial number-equipped glass product according to claim 16 is the glass product with a serial number according to any one of claims 1 to 15, wherein the glass product is made of a single glass sheet for construction.

The glass product with a serial number according to claim 17 is the glass product with a serial number according to any one of claims 1 to 15, wherein the glass product is made of laminated glass for construction.

The glass product with a serial number according to claim 18 is the glass product with a serial number according to any one of claims 1 to 15, wherein the glass product is made of a double-layer glass for construction.

The glass product with a serial number according to claim 19 is the glass product with a serial number according to any one of claims 1 to 15, wherein the glass product is a vacuum double-glazed glass.

The glass product with a serial number according to claim 20, in the glass product with a serial number according to any one of claims 17 to 19, wherein the serial number is formed on a surface of the glass on an outside air side. And

The glass product with a serial number according to claim 21 is the glass product with a serial number according to any one of claims 17 to 19, wherein the serial number is formed on a surface on the other glass side facing the glass. It is characterized by being.

The glass product with serial number according to claim 22, wherein the glass product with serial number according to any one of claims 1 to 15, wherein the glass product is composed of a single plate glass for construction and a laminated glass for construction. It is characterized by.

The glass product with a serial number according to claim 23 is the glass product with a serial number according to any one of claims 1 to 15, wherein the glass product is composed of a single plate glass for construction and a double glazing glass for construction. It is characterized by that.

The glass product with a serial number according to claim 24, wherein the glass product with a serial number according to any one of claims 1 to 15, wherein the glass product is composed of a single plate glass for construction and a vacuum double-glazed glass. It is characterized by.

The glass product with a serial number according to claim 25, in the glass product with a serial number according to any one of claims 22 to 24, wherein the serial number is formed on the single glass for building. To do.

According to the glass product with a serial number according to claim 1, since the serial number is formed on the glass by a laser beam, the work efficiency of forming the serial number can be improved. Product management can be facilitated.

According to the glass product with a serial number according to claim 2, since the glass with the serial number formed has a thermal expansion coefficient of 30 × 10 ^{−7 to} 120 × 10 ⁻⁷ K ⁻¹ , the serial number is visible. Can be prevented.

According to the glass product with a serial number according to claim 3, since the glass with the serial number formed has a coefficient of thermal expansion of 80 × 10 ^{−7 to} 100 × 10 ⁻⁷ K ⁻¹ , the serial number is visible. Can be reliably prevented.

According to the glass product with a serial number according to claim 4, since the glass on which the serial number is formed has an absorption rate of laser light of 80% or more, it is possible to prevent the visibility of the serial number from being reduced.

According to the glass product with a serial number according to claim 5, since the glass with the serial number formed has a laser light absorption rate of 90% or more, it is possible to reliably prevent a reduction in the visibility of the serial number. it can.

According to the glass product with a serial number according to claim 6, since the glass on which the serial number is formed has a softening point of 600 to 800 ° C., it is possible to prevent the visibility of the serial number from being reduced.

According to the glass product with a serial number according to claim 7, since the glass on which the serial number is formed has a softening point of 650 to 750 ° C., it is possible to reliably prevent a reduction in serial number visibility.

According to the glass product with a serial number according to claim 8, since the serial number is composed of characters having a size of 1 to 10 mm square, it is possible to prevent a reduction in the visibility of the serial number.

According to the glass product with a serial number according to claim 9, since the serial number is composed of characters having a size of 2 to 6 mm square, it is possible to reliably prevent a reduction in the visibility of the serial number.

According to the glass product with a serial number according to claim 10, since the serial number is composed of characters drawn with a line having a width of 0.1 to 0.5 mm, it is possible to prevent a reduction in the visibility of the serial number. it can.

According to the glass product with a serial number according to claim 11, since the serial number is composed of characters drawn with a line having a width of 0.2 to 0.4 mm, the reduction of the visibility of the serial number is surely prevented. be able to.

According to the glass product with a serial number of the twelfth aspect, since the serial number is composed of characters drawn with a line having a depth of 50 μm to 200 μm, it is possible to prevent the visibility of the serial number from being reduced.

According to the glass product with a serial number according to claim 13, since the serial number is composed of characters drawn with a line having a depth of 80 μm to 150 μm, it is possible to reliably prevent a reduction in the visibility of the serial number. .

According to the glass product with a serial number according to the fourteenth aspect, since the serial number is formed inside the glass, it is possible to prevent the serial number visibility from decreasing over time.

According to the glass product with a serial number of the fifteenth aspect, since the serial number is formed on the surface of the glass, the visibility of the serial number can be improved.

According to the glass product with a serial number of the twentieth aspect, since the serial number is formed on the surface on the outside air side of the glass, the visibility of the serial number can be further improved.

According to the glass product with a serial number according to claim 21, the serial number is formed on the surface on the other glass side facing the glass on which the serial number is formed. Reduction can be prevented.

According to the glass product with serial number according to claim 25, since the serial number is formed on the single glass plate for construction, it is possible to easily form the serial number by laser light.

As a result of intensive studies to achieve the above object, the present inventor has a coefficient of thermal expansion of 30 × 10 ^{−7 to} 120 × 10 ⁻⁷ K when a serial number is formed on the glass surface by laser light. ⁻¹ , preferably 80 × 10 ^{−7 to} 100 × 10 ⁻⁷ K ⁻¹ , the laser light absorption rate of the glass is 80% or more, preferably 90% or more, and the glass softening point is 600 to 800 ° C., preferably Visibility of 650 to 750 ° C. can prevent a reduction in visibility, and the size of characters constituting the serial number is 1 to 10 mm square, preferably 2 to 6 mm square, and the line width of the characters is It has been found that a decrease in visibility can be prevented when the depth is 0.1 to 0.5 mm, preferably 0.2 to 0.4 mm, and the character line depth is 50 to 200 μm, preferably 80 to 150 μm. .

The present invention has been made based on the results of the above research.

Hereinafter, a glass product with a serial number according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a glass product with a serial number according to an embodiment of the present invention.

In FIG. 1, a serial numbered glass product 100 according to an embodiment of the present invention is made of vacuum double-glazed glass, and is opposed to form a hollow layer 140 therebetween via a cylindrical pillar 150 as a spacer. A pair of plate glasses 110 and 120 are provided. The pair of plate glasses 110 and 120 are hermetically joined by a seal frame 130 whose outer peripheral edge is fluidized at a low temperature, and a frame 160 is fitted around the seal glass.

The pair of plate glasses 110 and 120 are rectangular plate glasses having a thickness of 2 to 8 mm. In the glass sheet 110, a through-hole 170 is formed at a corner on the right side with respect to the short side of the glass sheet 110 inside the sealing surface by the seal frame 130 so that the inside of the hollow layer 140 is decompressed by a method described later. Yes. A sealing plug 180 is inserted into the through hole 170, and the contact portion is sealed by a predetermined method.

The hollow layer 140 is depressurized by being evacuated through the through-hole 170 and then sealed with a sealing plug 180 to be in a depressurized state of about 0.1 Pa or less. 150 are arranged in a matrix at predetermined intervals.

On the surface of the plate glass 110 on the outside air side, a mark 210 of FIG. 2 and a serial number 220 described later between the sealing plug 180 and the short side of the plate glass 110 closest to the sealing plug 180 are a laser of FIG. It is formed by light.

FIG. 2 is a partially enlarged view around the sealing plug 180 of the plate glass 110 in FIG.

In FIG. 2, the mark 210 includes a character of the product name “space A” of the serial numbered glass product 100, a character of “standard” that is a product specification of the space A formed below the character of space A, and a standard The letters “ABC Glass”, which is the manufacturer of the plate glass 100 with serial number, formed below the letters “”.

The size of the characters in the space A is 5 mm square, the standard character size is 2 mm square, and the ABC glass character size is 4 mm square.

The serial number 220 includes a letter “M” representing a manufacturing factory, a letter “0205” representing a production date, and a letter “012” representing a production management number.

The serial number 220 is not limited to the above-described configuration, and may be composed of only characters representing the manufacturing control number, such as “012”. For example, “M0205-012-H1500W2000T6”, “M0205- “M” indicating a manufacturing factory, “0205” indicating a manufacturing date, and manufacturing control number, such as “012-I5 + A0.1 + O6”, “M0205-012-PI25 + PD0.6 + PT0.15”, etc. In addition to the characters “012”, characters “H1500W2000T6”, “I5 + A0.1 + O6”, and “PI25 + PD0.6 + PT0.15” representing specifications (dimensions, types, configurations, etc.) may be added.

Here, “H1500W2000T6” indicates that the plate glass 110, 120 has a vertical dimension of 1500 mm, a horizontal dimension of 2000 mm, and a thickness of 6 mm, and “PW5 + A0.1 + 6” indicates that the plate glass 110 has a thickness of 5 mm. It is glass, and the plate glass 120 is a normal float glass having a thickness of 6 mm, and indicates that the distance between the plate glasses 110 and 120, that is, the thickness of the hollow layer 140 is 0.1 mm, “PI25 + PD0.6 + PT0.15” Indicates that the interval (pitch) between the pillars 150 is 25 mm, the diameter of the pillars 150 is 0.6 mm, and the thickness of the pillars 150 is 0.15 mm.

The size of each character constituting the serial number 220 is 1 mm square, the interval between adjacent characters is 1 mm, the width of the line displaying the characters is 200 μm, and the depth is 100 μm.

The character shape of the mark 210 and the serial number 220 is not limited to this, and the size of the character may be arbitrarily set between 1 and 10 square mm, and the width of the line displaying the character is 0. The depth may be arbitrarily set between 1 and 0.5 mm and between 50 and 200 μm.

Next, a forming method for forming the mark 210 and the serial number 220 on the glass product 101 in which the mark 210 and the serial number 220 in FIG. 2 are not formed will be described below.

FIG. 3 is a diagram showing a schematic configuration of the apparatus for forming the mark 210 and the serial number 220 in FIG. 2, wherein (a) is a plan view and (b) is a side view.

3, the forming apparatus 300 includes a carrier 310 that can move in the horizontal direction and a laser marker 320 that is arranged to face the carrier 310 in the moving direction of the carrier 310.

The carrier 310 is disposed in a horizontally movable carriage 311 and is inclined at about 5 ° with respect to the vertical direction on the carriage 311, and the horizontal length is shorter than the length of the long side and the short side of the glass product 101. A backing plate 312 and a bar-shaped support member 313 having a rectangular cross section installed horizontally on the upper surface of the backing plate 312; the glass product 101 is placed on the backing plate 312 and supported by the support member 313; The glass product 101 is transported in the horizontal direction by being fixed on the backing plate 312 by a stopper (not shown) provided in the support member 313.

The laser marker 320 is disposed so as to be inclined so as to face the contact plate 312 of the carrier 310, and is movable in the direction of the contact plate 312 in parallel to the contact plate 312, and the upper right side of the body 321 (the carrier 310 movement) Direction), a right stopper 322 that can rotate 90 ° in the vertical plane direction in the direction of the contact plate 312, and an upper left side of the main body 321, opposite the contact plate 312, A left stopper 323 that can rotate 90 ° in the vertical plane direction toward the contact plate 312 and a laser 324 that forms the marker 210 and the serial number 220 are provided. Laser 324 is a CO ₂ laser. The horizontal conveyance position of the glass product 101 is determined by the right stopper 322 coming into contact with the right end surface (the carrier moving direction side) of the glass product 101 conveyed by the carrier 310, and the left stopper 323 being moved by the carrier 310. This is performed by contacting the left end surface of the glass product 101 conveyed by the above. The laser 324 can emit laser light at an arbitrary position.

Next, a method of forming the mark 210 and the serial number 220 on the plate glass 110 of the glass product 101 by the forming apparatus 300 will be described.

The glass product 101 placed on the abutting plate 312 with the plate glass 110 as the front and the sealing plug 180 in the traveling direction and below the carrier 310 is moved by the carriage 311 in the horizontal direction so that the laser marker It is conveyed to 320. The laser marker 320 contacts the right end surface of the conveyed glass product 101 by rotating the right stopper 322 by 90 °, and positions the glass product 101. Next, the main body 321 of the laser marker 320 moves in the direction of the glass product 101, and the laser 324 focuses the laser beam between the short side of the plate glass 110 and the sealing plug 180 and on the surface of the plate glass 110. The light is emitted and moved in a single line shape on the surface of the plate glass 110.

Due to the laser light emitted from the laser 324, the plate glass 110 is locally heated at the focal position of the laser light, and melted and expanded. When the focal position of the laser beam is moved, the expanded portion is cooled and contracted, and a minute crack is generated in this process, and a mark 210 and a serial number 220 are formed by a series of the cracks.

When the mark 210 and the serial number 220 are formed on the plate glass 110 and the serial number-added glass product 100 is completed, the right stopper 322 returns to its original position even when rotated 90 °, and the serial number glass product 100 is returned by the carrier 310. Is transferred, and a series of operations by the forming apparatus 300 is completed.

In the glass product with serial number 100 of FIG. 1, the serial number 220 is formed on the surface of the plate glass 110 using the laser marker 320. Therefore, a template is not required as in the case of forming the serial number 220 by the sandblast method. The working efficiency of forming the number 220 can be improved, and the serial number 220 is formed on the surface of the plate glass 110. Therefore, in response to the complaint by the user of the serial number glass product 100, the manufacturer has the serial number glass product. 100 manufacturing information (manufacturing factory, date of manufacture, manufacturing conditions), specifications, distribution route (sales route), etc. can be easily known, prompt response to complaints and manufacturing information ( Manufacturing factory, date of manufacture, manufacturing conditions) and distribution The manufacturing process of the product by comparing the (sales channels) or the like and the claims contents, it is possible to improve the technology such materials, it is possible to facilitate the management of products have.

Also, since the serial number 220 is a stamp formed using the laser marker 320, it does not disappear like ink.

Furthermore, by adjusting the intensity of the laser beam or the like, the letters in the serial number 220 can be made to have a desired size and depth, thereby preventing the appearance of the glass product 100 with a serial number from being impaired. it can.

In the forming apparatus 300 of FIG. 3, the laser 324 of the laser marker 320 is a CO ₂ laser, but is not limited thereto, and may be a YAG laser, for example.

1 has the mark 210 and the serial number 220 formed on the surface of the plate glass 110 on the outside air side, but is not limited to this, for example, the surface A of the plate glass 120 on the outside air side or The surface of the plate glass 110, 120 on the hollow layer 140 side (the surface on the other glass side facing the glass) B or the inside of the plate glass 110, 120 that is not the outside air side of the plate glass 110, 120 or the surface of the hollow layer 140 side You may form (FIG. 4).

In FIG. 4, when the mark 210 and the serial number 220 are formed on the surface of the plate glass 110, 120 on the outside air side, when formed on the surface of the plate glass 110, 120 on the hollow layer 140 side, The case where it is formed is shown in one drawing for convenience.

When forming the mark 210 and the serial number 220 on the surface on the outside air side of the plate glass 120, the glass product 101 is placed with the plate glass 120 face up on the backing plate 312 of the forming apparatus 300 in FIG. The mark 210 and the serial number 220 are formed by the same method as in FIG.

When the mark 210 and the serial number 220 are formed on the surface of the plate glass 110 on the hollow layer 140 side, the outside air side of the plate glass 120 or the surface of the hollow glass layer 140, and the inside of the plate glass 110, 120, the forming apparatus 300 shown in FIG. The laser 324 of the laser marker 320 is a YAG laser, the surface on the hollow layer 140 side of the plate glass 110 forming the mark 210 and the serial number 220, the outside air surface of the plate glass 120 or the surface of the hollow layer side 140, the inside of the plate glass 110, 120 The mark 210 and the serial number 220 are formed by the same method as in FIG.

The glass product with serial number 100 in FIG. 1 is not limited to a vacuum double-glazed glass, for example, other architectural glass products such as other double-glazed glass, laminated glass, processed glass such as tempered glass, or single plate glass, It may be a glass product composed of a single plate glass and a laminated glass for construction, a glass product composed of a single plate glass and a multilayer glass for construction, a glass product composed of a single plate glass and a vacuum double layer glass, etc. This is not a limitation. Therefore, the configuration and the formation position of the mark 210 and the serial number 220 are not limited to this. For example, the mark 210 and the serial number 220 may be formed on the left side with respect to the short side of the plate glass 110. In this case, in the forming apparatus 300, the glass product 101 is conveyed by the carrier 310 and positioned by the left stopper 323 of the laser marker 320.

Here, the serial number-equipped glass product 100 is composed of a glass product composed of the above-described single plate glass and architectural laminated glass, a glass product composed of a single plate glass and architectural double glazing, and a single plate glass and vacuum double glazed glass. In the case of a glass product having a three-layer structure such as a glass product, it is preferable that a serial number 220 is attached to the single plate glass. This is because single-plate glass is usually lighter, thinner, and easier to handle than architectural laminated glass, architectural double-glazed glass, and vacuum double-glazed glass, so that serial number formation by laser light can be facilitated.

Hereinafter, examples of the present invention will be described.

First, the glass product 100 with a serial number was produced by the method of the said FIG. 3 using the plate glass 110 which measured the thermal expansion coefficient previously. In the production of the glass product with serial number 100, the conditions for forming the serial number 220 on the glass product 101 before formation are all the same. Among the produced serial number-added glass products 100, Example 1 having a thermal expansion coefficient of 30 × 10 ⁻⁷ K ⁻¹ , Example 2 having a thermal expansion coefficient of 45 × 10 ⁻⁷ K ⁻¹ , heat Example 3 with an expansion coefficient of 80 × 10 ⁻⁷ K ⁻¹ , Example 4 with a thermal expansion coefficient of 90 × 10 ⁻⁷ K ⁻¹ , Example with a thermal expansion coefficient of 105 × 10 ⁻⁷ K ⁻¹ Example 5 and Example 6 having a thermal expansion coefficient of 120 × 10 ⁻⁷ K ⁻¹ , Comparative Example 1 having a thermal expansion coefficient of 15 × 10 ⁻⁷ K ⁻¹ , and a thermal expansion coefficient of 28 × 10 ⁻⁷ Comparative Example 2 with K ⁻¹ , Comparative Example 3 with a thermal expansion coefficient of 125 × 10 ⁻⁷ K ⁻¹ , and Comparative Example 4 with a thermal expansion coefficient of 140 × 10 ⁻⁷ K ⁻¹ were prepared.

　次いで、実施例１〜６及び比較例１〜４に対して視認性の評価を行った。視認性評価は、シリアルナンバー付ガラス製品１００のシリアルナンバー２２０を肉眼で観察してその視認性を評価するものであり、結果を表１に示す。

Subsequently, visibility was evaluated with respect to Examples 1-6 and Comparative Examples 1-4. Visibility evaluation evaluates the visibility by observing the serial number 220 of the glass product 100 with a serial number with the naked eye, and the result is shown in Table 1.

In Table 1, ○ is a glass product 100 with a serial number evaluated as having a very good visibility of the serial number 220, △ is a glass product 100 with a serial number evaluated as having the same visibility, and × is a glass product with a serial number. Each of the serial numbered glass products 100 evaluated as bad is shown.

From Table 1, when the coefficient of thermal expansion of the plate glass 110 of the serial numbered glass product 100 of FIG. 1 is smaller than 30 × 10 ⁻⁷ K ⁻¹ , the amount of thermal expansion of the plate glass 110 at the laser beam focal position decreases. The stress generated at the boundary with the position peripheral portion is reduced, cracks are less likely to occur at the laser beam focal position, the visibility of the serial number 220 is reduced, and the thermal expansion coefficient is 120 × 10 ⁻⁷ K ^−1. If it is larger, the thermal expansion amount of the plate glass 110 at the laser beam focal position increases, the stress generated at the boundary with the periphery of the focal position increases, the cracks generated at the laser beam focal position become excessive, and the surface of the plate glass 110 Is peeled off, and the width of the line constituting the serial number 220 is not constant, and the visibility of the serial number 220 is reduced. Expansion coefficient of ^{30 × 10 -7 ~120 × 10 -7} K -1, preferably it has been found that it is possible to prevent a decrease in visibility as a ^{80 × 10 -7 ~100 × 10 -7} K -1 .

Next, the glass product 100 with a serial number is obtained by the method of FIG. 3 using the plate glass 110 in which the absorption rate of laser light of the laser 324 of the laser marker 320 of FIG. Was made. In the production of the glass product 100 with a serial number, the conditions for forming the serial number 220 on the glass product 101 are all the same. As shown in Table 2 out of the serial number-added glass products 100 produced, Example 7 in which the laser light absorption rate is 80%, Example 8 in which the laser light absorption rate is 87%, and the laser light absorption rate. Example 9 having 90%, Example 10 having a laser light absorption rate of 95%, Comparative Example 5 having a laser light absorption rate of 60%, and Comparative Example 6 having a laser light absorption rate of 78% Got ready.

　次いで、実施例７〜１０及び比較例５，６に対して上記と同様の視認性の評価を行った。結果を表２に示す。

Subsequently, the same visibility evaluation as described above was performed on Examples 7 to 10 and Comparative Examples 5 and 6. The results are shown in Table 2.

From Table 2, when the amount of laser light absorption of the plate glass 110 of the serial numbered glass product 100 of FIG. 1 is less than 80%, the heat absorption of the plate glass 110 is not concentrated at the laser light focal position, but at the laser light focal position. Since local heating is not possible and cracks are not generated, the visibility of the serial number 220 is reduced. However, the plate glass 110 has a laser light absorption rate of 80% or more, desirably 90% or more. It was found that can be prevented.

Next, the glass product 100 with a serial number was produced by the method of FIG. 3 using the plate glass 110 whose softening point was measured in advance. In the production of the glass product 100 with a serial number, the conditions for forming the serial number 220 on the glass product 101 are all the same. As shown in Table 3 out of the manufactured serial number-added glass products 100, Example 11 with a softening point of 600 ° C., Example 12 with a softening point of 640 ° C., and Example with a softening point of 680 ° C. 13, Example 14 with a softening point of 720 ° C, Example 15 with a softening point of 760 ° C, Example 16 with a softening point of 800 ° C, Comparative Example 7 with a softening point of 450 ° C, Softening point Comparative Example 8 having a softening point of 810 ° C. and Comparative Example 10 having a softening point of 900 ° C. were prepared.

　次いで、実施例１１〜１６及び比較例７〜１０に対して上記と同様の視認性の評価を行った。結果を表３に示す。

Subsequently, the same visibility evaluation as described above was performed on Examples 11 to 16 and Comparative Examples 7 to 10. The results are shown in Table 3.

From Table 3, when the softening point of the plate glass 110 of the serial numbered glass product 100 of FIG. 1 is smaller than 600 ° C., the thermal expansion amount at the laser beam focal position of the plate glass 110 decreases, and at the boundary with the peripheral portion of this focal position. The generated stress is reduced, cracks are less likely to occur at the laser beam focal position, the visibility of the serial number 220 is reduced, and if the softening point is greater than 800 ° C., the thermal expansion of the plate glass 110 at the laser beam focal position. The amount of stress increases at the boundary with the periphery of the focal position, the cracks generated at the focal position of the laser beam become excessive, the surface of the plate glass 110 is peeled off, and the character lines constituting the serial number 220 are increased. Although the width is not constant and the visibility of the serial number 220 is lowered, the glass sheet 110 has a softening point of 600 to 600. 00 ° C., preferably it has been found that it is possible to prevent a decrease in visibility as a 650 to 750 ° C..

Next, a glass product 100 with a serial number was manufactured by the method of FIG. 3 using the plate glass 110 having the same thermal expansion coefficient, the same laser light absorption rate, and the same softening point. From the manufactured serial number-added glass products 100, select the serial number-added glass products 100 having the same line width and depth of characters constituting the serial number 220 (hereinafter referred to as “component characters”), and Among these, as shown in Table 4, Example 17 in which the size of the constituent characters is 1.0 mm square, Example 18 in which the size of the constituent characters is 1.4 mm square, and the size of the constituent characters is 2. Example 19 which is 2 mm square, Example 20 where the size of the constituent characters is 5.8 mm square, Example 21 where the size of the constituent characters is 7.2 mm square, and the size of the constituent characters is 10.0 mm Example 22 having four sides, Comparative Example 11 having a constituent character size of 0.5 mm square, Comparative Example 12 having a constituent character size of 0.9 mm square, and a constituent character size of 10.5 mm square There Comparative Example 13, and configurations character size was prepared in Comparative Example 14 is a 13.0mm square.

　次いで、実施例１７〜２２及び比較例１１〜１４に対して上記と同様の視認性の評価を行った。結果を表４に示す。

Subsequently, the same visibility evaluation as described above was performed on Examples 17 to 22 and Comparative Examples 11 to 14. The results are shown in Table 4.

From Table 4, if the size of the constituent characters is smaller than 1 mm square, the adjacent lines are too close and the characters are crushed, the visibility of the serial number 220 is reduced, and the size of the constituent character lines If it is larger than 10 mm square, the characters will be excessive compared to the thickness of the line, and the visibility of the serial number 220 will be reduced, but the serial number 220 is 1-10 mm square, preferably 2-6 mm square. It has been found that it is possible to prevent a decrease in visibility if it is made up of characters.

Next, a glass product 100 with a serial number was manufactured by the method of FIG. 3 using the plate glass 110 having the same thermal expansion coefficient, the same laser light absorption rate, and the same softening point. From the produced serial number-added glass product 100, the serial number-added glass product 100 having the same size and the same line depth of the serial number 220 is selected. As shown, Example 23 in which the width of the constituent character line is 0.10 mm, Example 24 in which the width of the constituent character line is 0.20 mm, and Example in which the width of the constituent character line is 0.26 mm 25, Example 26 in which the line width of the constituent characters is 0.34 mm, Example 27 in which the line width of the constituent characters is 0.40 mm, and Example 28 in which the line width of the constituent characters is 0.50 mm Comparative Example 15 in which the width of the constituent character line is 0.05 mm, Comparative Example 16 in which the width of the constituent character line is 0.08 mm, Comparative Example 17 in which the width of the constituent character line is 0.52 mm, And the line width of the constituent characters is Was prepared in Comparative Example 18 is .60Mm.

　次いで、実施例２３〜２８及び比較例１５〜１８に対して上記と同様の視認性の評価を行った。結果を表５に示す。

Subsequently, the same visibility evaluation as described above was performed on Examples 23 to 28 and Comparative Examples 15 to 18. The results are shown in Table 5.

From Table 5, if the line width of the constituent characters is smaller than 0.1 mm, the line is too thin to reduce the visibility of the serial number 220, and if the line width of the constituent characters is larger than 0.5 mm, the laser The crack generated at the light focus position becomes excessive, the surface of the plate glass 110 is peeled off, the line width of the constituent characters is not constant and the visibility of the serial number 220 is reduced, but the serial number 220 has a width of 0.1. It has been found that a decrease in visibility can be prevented when the characters are drawn with a line of .about.0.5 mm, preferably 0.2 to 0.4 mm.

Next, a glass product 100 with a serial number was manufactured by the method of FIG. 3 using the plate glass 110 having the same thermal expansion coefficient, the same laser light absorption rate, and the same softening point. From the produced serial number-added glass product 100, a serial number-added glass product 100 in which the size of the constituent characters of the serial number 220 and the width of the line of the constituent characters are the same is selected. Thus, Example 29 in which the depth of the constituent character line is 50 μm, Example 30 in which the depth of the constituent character line is 95 μm, Example 31 in which the depth of the constituent character line is 100 μm, Example 32 in which the depth of the line is 145 μm, Example 33 in which the depth of the constituent character line is 156 μm, Example 34 in which the depth of the constituent character line is 200 μm, Comparative Example 19 with a depth of 40 μm, Comparative Example 20 with a component character line depth of 48 μm, Comparative Example 21 with a component character line depth of 205 μm, and a component character line depth of 270 μm In It was prepared in Comparative Example 22.

　次いで、実施例２９〜３４及び比較例１９〜２２に対して上記と同様の視認性の評価を行った。結果を表６に示す。

Subsequently, the same visibility evaluation as described above was performed on Examples 29 to 34 and Comparative Examples 19 to 22. The results are shown in Table 6.

From Table 6, if the depth of the constituent character line is smaller than 50 μm, it cannot be recognized as a line, the visibility of the serial number 220 is lowered, and if the constituent character line depth is larger than 200 μm, the laser beam The crack generated at the focal point becomes excessive, the surface of the plate glass 110 is peeled off, the line width of the constituent characters is not constant, and the visibility of the serial number 220 is reduced, but the serial number 220 has a depth of 50 to 200 μm. In addition, it has been found that it is possible to prevent a decrease in visibility when the characters are drawn with a line of 80 to 150 μm.

It is a perspective view of the glass product with a serial number which concerns on embodiment of this invention. It is the elements on larger scale around the sealing stopper 180 of the plate glass 110 in FIG. It is a figure which shows schematic structure of the formation apparatus of the mark 210 of FIG. 2, and the serial number 220, (a) is a top view, (b) is a side view. It is a fragmentary sectional view regarding line IV-IV of FIG.

Explanation of symbols

100 Glass Product with Serial Number 110, 120 Flat Glass 210 Mark 220 Serial Number 300 Forming Device 310 Carrier 320 Laser Marker

Claims (25)

A glass product with a serial number, characterized by comprising a glass having a serial number formed by laser light. The glass product with a serial number according to claim 1, wherein the glass has a thermal expansion coefficient of 30 × 10 ^{−7 to} 120 × 10 ⁻⁷ K ⁻¹ . The glass product with a serial number according to claim 2, wherein the glass has a thermal expansion coefficient of 80 × 10 ^{−7 to} 100 × 10 ⁻⁷ K ⁻¹ . The glass product with a serial number according to any one of claims 1 to 3, wherein the glass has an absorption rate of the laser light of 80% or more. The glass product with a serial number according to claim 4, wherein the glass has an absorption rate of the laser light of 90% or more. The glass product with a serial number according to any one of claims 1 to 5, wherein the glass has a softening point of 600 to 800 ° C. The glass product with a serial number according to claim 6, wherein the glass has a softening point of 650 to 750 ° C. The serial number-equipped glass product according to any one of claims 1 to 7, wherein the serial number is composed of characters having a size of 1 to 10 mm square. The serial number-equipped glass product according to claim 8, wherein the serial number is composed of characters having a size of 2 to 6 mm square. The serial number-equipped glass product according to any one of claims 1 to 9, wherein the serial number is composed of characters drawn with a line having a width of 0.1 to 0.5 mm. The serial number-equipped glass product according to claim 10, wherein the serial number comprises characters drawn with a line having a width of 0.2 to 0.4 mm. The serial number-equipped glass product according to any one of claims 1 to 11, wherein the serial number is composed of characters drawn with a line having a depth of 50 to 200 µm. 13. The glass product with serial number according to claim 12, wherein the serial number is composed of characters drawn with a line having a depth of 80 to 150 μm. The serial number-equipped glass product according to any one of claims 1 to 13, wherein the serial number is formed inside the glass. The glass product with a serial number according to any one of claims 1 to 13, wherein the serial number is formed on a surface of the glass. The glass product with a serial number according to any one of claims 1 to 15, wherein the glass product is made of a single plate glass for construction. The glass product with a serial number according to any one of claims 1 to 15, wherein the glass product is made of laminated glass for construction. The glass product with a serial number according to any one of claims 1 to 15, wherein the glass product is made of a double-layer glass for construction. The glass product with a serial number according to any one of claims 1 to 15, wherein the glass product is a vacuum double-glazed glass. The glass product with a serial number according to any one of claims 17 to 19, wherein the serial number is formed on a surface of the glass on an outside air side. The serial number-equipped glass product according to any one of claims 17 to 19, wherein the serial number is formed on a surface on the other glass side facing the glass. The glass product with a serial number according to any one of claims 1 to 15, wherein the glass product is composed of a single sheet glass for construction and laminated glass for construction. The glass product with a serial number according to any one of claims 1 to 15, wherein the glass product is composed of a single sheet glass for building and a double layer glass for building. The glass product with a serial number according to any one of claims 1 to 15, wherein the glass product is composed of a single plate glass for construction and a vacuum double-glazed glass. 25. The glass product with a serial number according to any one of claims 22 to 24, wherein the serial number is formed on the architectural single plate glass.

Images