JP6354441B2 - Laminated glass manufacturing method - Google Patents

Description

  The present invention relates to a technique of a method for manufacturing a laminated glass.

Conventionally, a laminated glass is known as a glass excellent in penetration resistance and impact resistance.
Laminated glass is generally manufactured by an ACV method (autoclave method) including a lamination step, a temporary pressure bonding step, a main pressure bonding step, and the like.
Specifically, at least two plate glasses are laminated while interposing a resin intermediate film, and are put into a production line (lamination process). The supplied plate glass is heated to soften the resin intermediate film and Laminated glass is manufactured by pre-pressing (temporary press-bonding step) and heating / pressurizing the pre-press-bonded plate glass with an autoclave (main press-bonding step).

By the way, in the above-mentioned main press-bonding step, for example, bubbles are prevented from remaining between the plate glass and the resinous intermediate film, and it becomes a defective product, or the adhesion between the plateglass and the resinous intermediate film is increased. Therefore, at the same time as pressurizing the inside of the autoclave furnace, the laminated interface of the plate glass put into the autoclave furnace is evacuated.
Here, Patent Document 1 discloses a technique related to an air suction removal apparatus for producing laminated glass as a technique for evacuating a laminated interface of plate glass.
Specifically, in Patent Document 1, when manufacturing a laminated body in which a thermoplastic resin intermediate film is sandwiched between at least two sheet glasses, a peripheral portion of the laminated body is cut in the longitudinal direction and the periphery is cut. Air suction removal for laminated glass production, characterized in that an opening of a heat-resistant resin tube that opens in a direction is inserted, and a contact portion between the tube and the plate glass is sealed with an adhesive tape to provide a decompression chamber Techniques relating to the apparatus are disclosed.

No. 4-35400

According to the air suction and removal apparatus for producing laminated glass in Patent Document 1, by using the heat-resistant resin tube as the decompression chamber, the peripheral portion of the laminated glass is completely sealed without being affected by the shape of the laminated glass. It is possible to evacuate the gap between the glass sheets with a simple device.
However, when the opening of the heat-resistant resin tube is inserted into the peripheral edge of the plate glass, the positional displacement in the plane direction of the pair of plate glasses is likely to occur due to the insertion operation of the heat-resistant resin tube, evacuation, etc., and the plate glass stacking posture is maintained. Therefore, it is difficult to insert the opening of the heat-resistant resin tube into the peripheral portion of the plate glass while maintaining the laminated posture of the plate glass only by the heat-resistant resin tube.

  The present invention has been made in view of the above-described problems of the present situation, and a laminated body obtained by laminating a resin intermediate film between at least two sheet glasses is heated by an autoclave. At the same time as the pressure treatment, a sealing member is fitted to the peripheral edge of the laminated body, and a vacuum drawing process is performed, whereby the glass sheets are pressed together to produce a laminated glass. Thus, a method for manufacturing a laminated glass that can easily perform the fitting operation of the sealing member to the laminated body while maintaining the laminating posture of the plate glass and can improve the efficiency of the vacuuming operation of the laminated body is provided. This is the issue.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

That is, in the method for producing laminated glass according to claim 1 of the present invention, a heating / pressurizing treatment by an autoclave is performed on a laminated body in which a resin intermediate film is interposed between at least two plate glasses. At the same time, a laminated glass is manufactured by fitting a sealing member to the peripheral portion of the laminate and performing a vacuuming process to press the plate glass together to produce a laminated glass, The sealing member includes a pressure reducing passage communicating with a stacking interface of the stacked body, a contact portion contacting with an end surface of the stacked body, and the stacked body in a state where the sealing member is fitted to a peripheral edge of the stacked body. A holding portion that holds the sealing member in a thickness direction, and the vacuuming process is performed by fitting the sealing member to a peripheral portion of the laminate, so that the contact portion is brought into contact with an end surface of the laminate. The clamping part In a state where more sandwiches the laminate in a thickness direction, with is performed through the vacuum passage, said sealing member further comprises a seal portion in close contact with the plate surface of the plate glass in the outermost layer of the laminate, the sealing member Is attached to the peripheral edge of the laminate, thereby bringing the seal portion into close contact with the plate surface of the plate glass in the outermost layer of the laminate, and the sandwiching portion, the seal portion, and the laminate The vacuuming process is also performed on a space portion surrounded by the plate surface of the plate glass in the outermost layer .

Moreover, the manufacturing method of the laminated glass which concerns on Claim 2 of this invention is characterized by the said pressure-reduction passage being formed in a cross-sectional view semicircle shape.

Moreover, in the method for producing a laminated glass according to claim 3 of the present invention, the laminated body is a laminated body in which a resin intermediate film is interposed between two sheet glasses, and the radial dimension of the decompression passage is It is characterized by being set to 1.5 times or more and 3 times or less the gap dimension of the pair of plate glasses.

Moreover, the manufacturing method of the laminated glass which concerns on Claim 4 of this invention is characterized by performing the vacuuming process with respect to the said space part using the path | route independent of the said pressure reduction channel | path.

Moreover, the manufacturing method of the laminated glass which concerns on Claim 5 of this invention is characterized by the said resin-made intermediate film containing a fluororesin.

Further, in the method for producing a laminated glass according to claim 6 of the present invention, the evacuation treatment is continued until the temperature of the resinous intermediate film becomes equal to or lower than the glass transition point after the heating / pressurizing treatment. It is characterized by being performed.

  As effects of the present invention, the following effects can be obtained.

According to the method for manufacturing a laminated glass according to claim 1 of the present invention, the sealing member is fitted along the peripheral edge of the laminated body, so that the end surface of the laminated body abuts on the sealing member, and the laminated body The peripheral edge is sandwiched between sealing members. Therefore, the positional deviation of each plate glass in the plane direction (direction orthogonal to the thickness direction) and the thickness direction is regulated by the sealing member itself.
Therefore, it is not necessary to separately provide a jig or the like for maintaining the sheet glass stacking posture, and the sealing member can be easily fitted to the peripheral edge of the laminate while maintaining the sheet glass stacking posture only by the sealing member. be able to.
Therefore, it is possible to easily perform the fitting operation of the sealing member to the laminated body while maintaining the laminated posture of the plate glass, and it is possible to improve the efficiency of the vacuuming operation of the laminated body.
Moreover, according to the manufacturing method of the laminated glass of this invention, since a sealing member is fitted along the peripheral part of a laminated body, a sealing part adheres to the plate | board surface of the plate glass in the outermost layer of a laminated body. The inner peripheral part of the sealing member including the peripheral part of the laminate is sealed by the sealing member itself.
Therefore, for example, it is not necessary to seal the contact portion between each plate glass and the close contact member using an adhesive tape or the like, and the peripheral portion of the laminate can be easily sealed. Moreover, airtight reliability can be improved compared with the case where an adhesive tape is used.
Therefore, the sealing operation of the sealing member with respect to the laminate can be easily performed, and the sealing reliability of the vacuuming operation of the laminate can be improved.
Furthermore, according to the method for producing laminated glass of the present invention, it is possible to improve the airtightness of the decompression passage, and for example, it is possible to prevent suction bubbles generated as the resin intermediate film contracts as much as possible.

Moreover, according to the method for manufacturing laminated glass according to claim 2 of the present invention, since the cross-sectional shape is relatively easy, not the complicated cross-sectional shape, the processing of the decompression passage is easy.

In addition, according to the method for producing a laminated glass according to claim 3 of the present invention, it is possible to prevent the resinous intermediate film from protruding too much from the end face of the laminated body when evacuating the laminated body. The thickness of the laminated glass can be made uniform, and the quality of the laminated glass can be improved.

Moreover, according to the method for manufacturing laminated glass according to claim 4 of the present invention, it is possible to surely evacuate the space, and it is possible to reliably prevent the suction bubbles generated due to the shrinkage of the resin intermediate film. can do.
Further, according to the method for manufacturing a laminated glass according to claim 4 of the present invention, for example, even if the inside of the decompression passage is sealed by the resin intermediate film protruding from the end face of the plate glass, the space portion is evacuated. Thus, the sandwiching portion and the seal portion can be kept in close contact with the plate surface of the plate glass in the outermost layer of the laminate.

Moreover, according to the manufacturing method of the laminated glass which concerns on Claim 5 of this invention, the laminated glass excellent in heat resistance, flame resistance, etc. which utilized the characteristic of the fluororesin can be manufactured.

Further, according to the method for manufacturing laminated glass according to claim 6 of the present invention, for example, it is possible to prevent a phenomenon of shrinkage due to cooling, such as a resin intermediate film made of a fluororesin. The quality of the glass can be improved.

The partial cross section front view which showed the whole structure of the sealing member which embodies the manufacturing method of the laminated glass which concerns on this invention. It is the figure which showed the cross-sectional shape of the sealing member, Comprising: The expanded sectional view seen from the direction of the arrow A in FIG. It is the figure which showed the pressure-reduction passage formed inside a sealing member, Comprising: The expanded sectional view of the location shown by the area | region B in FIG. It is the figure which showed the state of a pair of plate glass at the time of performing the high temperature / high pressure process by an autoclave with respect to a pair of plate glass in which the resin-made intermediate film which consists of a fluororesin is interposed, (a) is the high temperature / high pressure by an autoclave The expanded sectional view which showed the edge part of a pair of plate glass just before performing a process, (b) is the expanded sectional view which showed the edge part of a pair of plate glass immediately after performing the high temperature / high pressure process by an autoclave. It is the figure which showed the decompression path formed inside the sealing member in another embodiment, Comprising: (a) is an expanded sectional view which showed the vicinity of the decompression path which consists of a wide cross-sectional shape, (b) is mutually parallel. The expanded sectional view which showed the vicinity of the formed several pressure reduction channel | path. The partial cross section enlarged front view which showed the shape of the corner | angular part of the sealing member in 5th embodiment. FIG. 9 is a diagram showing a cross-sectional shape of a sealing member in a fifth embodiment, and is an enlarged cross-sectional view seen from the direction of arrow C in FIG.

  Next, embodiments of the invention will be described.

[Production method of laminated glass]
First, the manufacturing method of the laminated glass embodied by this embodiment is demonstrated using FIG. 1 and FIG.
In the following description, for convenience, the vertical direction in FIGS. 1 and 2 is described as the vertical direction of the sealing member 1.

The method for manufacturing a laminated glass in the present embodiment is a method for manufacturing a laminated glass 50 using, for example, the sealing member 1 as shown in FIG.
The laminated glass 50 includes a laminated body 50A including a resin intermediate film 51 and a pair of plate glasses 52 and 52 laminated with the resin intermediate film 51 interposed therebetween.
The laminated glass 50 is manufactured by an autoclave method including a lamination process, a temporary pressure bonding process, a main pressure bonding process, and the like. However, the laminated glass manufacturing method in the present embodiment is an autoclave (not shown) in the main pressure bonding process. At the same time, the pair of plate glasses 52 and 52 are pressure-bonded to each other by heating and pressurizing the inside of the furnace, and at the same time, the laminated interfaces 53 and 53 of the pair of plate glasses 52 and 52 after the temporary press-bonding process. On the other hand, it is a method of manufacturing by vacuuming.

Here, in the present embodiment, the sealing interface 1 is used to evacuate the laminated interfaces 53 and 53 of the pair of plate glasses 52 and 52.
As will be described in detail later, the sealing member 1 is formed in a frame shape having a substantially “U” shape in cross section with an inner peripheral side opened. Then, in a state where the sealing member 1 is fitted along the peripheral edge portions of the pair of glass plates 52 and 52 through the openings, the boundary portion between the pair of glass plates 52 and 52 and the resin intermediate film 51 (laminated body 50A). The peripheral edge of the laminated interface 53) communicates with the decompression passage 11b of the sealing member 1.

And 50 A of laminated bodies with which the sealing member 1 was mounted are thrown in in the furnace of an autoclave in this crimping | compression-bonding process.
Thereafter, as shown in FIG. 1, the decompression passage 11 b of the sealing member 1 is connected to the vacuum pump 22 or the like via the piping member 21.
Thereby, the lamination | stacking interface 53 * 53 of a pair of plate glass 52 * 52 and the resin-made intermediate film 51 is connected with the vacuum pump 22 via the pressure-reduction channel | path 11b and the piping member 21. FIG.

  Thereafter, in the autoclave furnace, heating and pressurizing processes are performed, and at the same time, the vacuum pump 22 evacuates the laminated interfaces 53 and 53 between the pair of plate glasses 52 and 52 and the resin intermediate film 51. These plate glasses 52 and 52 are finally pressure-bonded.

After the autoclave furnace temperature reaches a predetermined treatment temperature, the heating and pressurization are stopped after a predetermined time has elapsed.
Thereafter, it is confirmed that the temperature in the furnace has decreased to a predetermined temperature or less, and the laminated body 50A is taken out from the inside of the furnace of the autoclave, and evacuation by the vacuum pump 22 is stopped.
In this way, the laminated glass manufacturing process is completed, and a finished laminated glass 50 is obtained.

[Sealing member 1]
Next, the configuration of the sealing member 1 will be described in detail with reference to FIGS. 1 to 3.
In the following description, for convenience, the vertical direction in FIG. 3 is described as the vertical direction of the sealing member 1.

  As shown in FIG. 2, the sealing member 1 is a member for sealing the peripheral portions of a pair of plate glasses 52 and 52 in which a resin intermediate film 51 is interposed.

The sealing member 1 is formed of an elastic member having heat resistance such as fluorine rubber, silicon rubber, or acrylic rubber.
Further, the sealing member 1 is formed in a frame shape along the peripheral edges of the pair of plate glasses 52 and 52. For example, as shown in FIG. 1, in the present embodiment, the sealing member 1 is formed in a rectangular frame shape. The

In addition, about the shape of the sealing member 1, it is not limited to this embodiment.
That is, as long as it is the shape along the peripheral part of a pair of plate glass 52 * 52, the frame body shape which consists of polygonal shapes other than circular shape or a rectangular shape may be sufficient, for example.

The sealing member 1 is formed to have a substantially “U” -shaped cross-sectional shape.
Specifically, as shown in FIG. 2, the sealing member 1 extends along the end surfaces 52 a and 52 a while abutting against the end surfaces 52 a and 52 a (upper end surfaces in FIG. 2) of the respective plate glasses 52 and 52. The base 11 is extended from the contact surface 11a of the base 11 with the plate glass 52/52 to the inner peripheral side (lower side in FIG. 2) of the sealing member 1, and a predetermined interval is provided in the thickness direction of the plate glass 52/52. And a pair of support portions 12 and 12 which are opposed to each other.

A decompression passage 11b having a semicircular groove shape in cross-sectional view is formed along the extending direction of the base 11 at the center of the contact surface 11a of the base 11 in the thickness direction of the stacked body 50A.
Then, in a state where the sealing member 1 is fitted along the peripheral edge portions of the pair of plate glasses 52 and 52, the contact surface 11a of the base portion 11 comes into close contact with the end surface 52a of the plate glasses 52 and 52, whereby the decompression passage 11b is The laminated interfaces 53 and 53 between the pair of plate glasses 52 and 52 and the resin intermediate film 51 communicate with each other.

Here, as shown in FIG. 3, the glass plates 52 and 52 laminated with the resin intermediate film 51 interposed are separated from each other by the thickness dimension of the resin intermediate film 51. The radial dimension R is set to be about 1.5 to 3 times (R = 1.5 Wa to 3 Wa) as compared with the separation dimension Wa of the pair of glass plates 52 and 52.
This makes it possible to prevent the resinous intermediate film 51 from protruding too much from the end surface 52a of the laminated body 50A when evacuating the laminated body 50A put into the autoclave furnace in the main crimping step. The quality of the laminated glass 50 can be improved.

That is, in the main press-bonding step, a pair of intermediate layers 51 made of resin such as PVB (polyvinyl butyral) or EVA (ethylene vinyl acetate) are interposed at the same time as heating and pressurizing the inside of the autoclave furnace. When evacuating the plate glasses 52 and 52, the resin intermediate film 51 is softened by the influence of the heat treatment and excessively protrudes from the end surfaces 52a of the pair of plate glasses 52 and 52 by the influence of the pressure treatment and the evacuation. There is a case.
At this time, the resin intermediate film 51 protruding from the end surfaces 52a of the pair of glass plates 52 and 52 is blocked when reaching the inner peripheral surface of the decompression passage 11b, and only bubbles are evacuated.

  As a result, since the protrusion amount of the resin intermediate film 51 does not increase more than necessary, the thickness of the resin intermediate film 51 becomes too thin at the peripheral portions of the respective plate glasses 52 and 52, There is no concern that the side edge is too curved and the quality of the laminated glass 50 is degraded.

By the way, as shown in FIG. 2, in a pair of support parts 12 and 12 arrange | positioned facing each other, the protrusion part 12a is formed in the inner surface (opposing surface) of each support part 12. As shown in FIG.
The protruding portion 12 a extends along the extending direction of the support portion 12.
Further, the projecting end surface of the projecting portion 12 a is formed in a planar shape that is orthogonal to the contact surface 11 a of the base portion 11 and parallel to the extending direction of the support portion 12.

  In the pair of support parts 12 and 12, the gap dimension between the projecting parts 12a and 12a is approximately the same as or slightly smaller than the thickness dimension (dimension W in FIG. 2) of the stacked body 50A.

When the sealing member 1 having such a shape is fitted along the peripheral edge portions of the pair of plate glasses 52 and 52, the pair of plate glasses 52 and 52 is formed by the protruding portions 12a and 12a of the pair of support portions 12 and 12, respectively. The laminated body 50A is sandwiched in the thickness direction, and the plate glasses 52 and 52 are positioned in the thickness direction, so that the distortion in the thickness direction of the plate glasses 52 and 52 can be prevented.
As described above, the projecting portions 12a and 12a of the support portions 12 and 12 serve as sandwiching portions that sandwich the laminated body 50A in the thickness direction in a state where the sealing member 1 is fitted to the peripheral portions of the pair of glass plates 52 and 52. It has a function.

Further, in a state after the sealing work of the sealing member 1 is completed with respect to the laminated body 50A, the end surface 52a of the laminated body 50A comes into contact with the contact surface 11a of the base 11, and the plate glasses 52 and 52 are made of plate surfaces. It will be positioned in the direction. Thereby, it can prevent that position shift to the plate surface direction of plate glass 52 * 52 occurs.
As described above, the contact surface 11a of the base portion 11 is in contact with the end surface 52a of the laminated body 50A in a state where the sealing member 1 is fitted to the peripheral edge portions of the pair of plate glasses 52 and 52. It has a function as an abutting portion that prevents displacement in the plate surface direction.

  On the other hand, a folded portion 12b that is bent in a “let” shape toward the inner side (opposite direction side) and toward the base 11 side is formed at the distal end portion (the end opposite to the base 11 side) of each support portion 12. Is done.

When the sealing member 1 having such a shape is fitted along the peripheral edges of the pair of laminated glass sheets 52 and 52, the peripheral edges of the pair of glass sheets 52 and 52 are respectively connected to the folded portions 12b and 12b. It slides along, and it will be inserted in the gap | interval of a pair of support part 12 * 12.
Thereby, in the state in which the sealing member 1 is fitted in the laminated body 50A, the folded portions 12b and 12b are in close contact with the plate surfaces of the plate glasses 52 and 52, and the inside of the decompression passage 11b formed in the base portion 11 is externally provided. Thus, the airtightness of the decompression passage 11b can be improved.
As described above, the folded portions 12b and 12b have a function as a seal portion that seals the decompression passage 11b in a state where the sealing member 1 is fitted to the peripheral portions of the pair of plate glasses 52 and 52.

As described above, the sealing member 1 according to the present embodiment regulates distortion in the thickness direction of the plate glass 52 and displacement in the plate surface direction (a direction orthogonal to the thickness direction) at the peripheral edge of each plate glass 52. It has a possible cross-sectional shape (see the protrusion 12a of the support 12 and the contact surface 11a of the base 11).
That is, when the sealing member 1 is fitted along the peripheral edges of the pair of plate glasses 52 and 52, the stacked posture of the plate glasses 52 and 52 is firmly maintained.
Therefore, in the present embodiment, for example, it is not necessary to separately provide a jig or the like for maintaining the lamination posture of the respective plate glasses 52 and 52, and the plate glasses 52 and 52 are formed with respect to the peripheral portion of the laminated body 50A. Thus, the sealing member 1 can be easily fitted without causing the positional displacement.

In addition, the sealing member 1 in the present embodiment is fitted along the peripheral edge portions of the pair of glass plates 52 and 52, so that the airtightness of the inner peripheral portion can be secured (the folded portion 12 b of the support portion 12). For example).
Therefore, after the sealing member 1 is fitted to the peripheral portions of the pair of plate glasses 52 and 52, for example, using an adhesive tape or the like, there is no need to seal the contact portion between the plate glass 52 and the sealing member 1, The peripheral edge of the laminated body 50A (more specifically, the gap between the pair of glass sheets 52 and 52) can be easily sealed.
In particular, in the sealing member 1, the folded portion 12b is formed as a seal portion for ensuring the airtightness of the inner peripheral portion. In addition, the protruding portion 12a is also used for ensuring the airtightness of the inner peripheral portion. Since it acts as a seal portion, it is provided with a double seal portion, so that the airtightness of the decompression passage 11b can be reliably ensured.

  From the above, in the method for manufacturing laminated glass according to the present embodiment, both the fitting work of the sealing member 1 and the sealing work on the laminated body 50A can be easily performed, and the vacuuming work of the laminated body 50A can be performed. Efficiency and sealing reliability can be improved.

[Second Embodiment]
Next, the manufacturing method of the laminated glass in 2nd embodiment is demonstrated using FIG.

In the laminated glass 50 described above, the resin intermediate film 51 (see FIG. 2) is usually formed of PVB, EVA, or the like.
On the other hand, in the laminated glass 60 of the second embodiment, a pair of laminated intermediate films 61 made of a fluororesin excellent in heat resistance and flame resistance, and the intermediate film 61 made of resin. A laminated body 60 </ b> A including the plate glasses 62 and 62 is used.

Here, the fluororesin is a thermoplastic resin, and is softened by heat treatment and contracts with cooling.
Therefore, as shown in FIG. 4A, for example, the outer dimension of the resin intermediate film 61 may be set in advance to a size that protrudes about several millimeters from the end of the plate glass 62 at room temperature. As shown in FIG. 4 (b), after the heat treatment in the final press-bonding step, the outer dimensions of the resin intermediate film 61 are flat glass in a state where the resin intermediate film 61 is cooled to a temperature below the glass transition point. On the contrary, it may shrink so as to enter the inside by several millimeters from the end of 62.
As a result, gaps are generated at the peripheral edge portions of the pair of glass plates 62 and 62, and a plurality of suction bubbles are generated as the resin intermediate film 61 contracts, and the quality of the laminated glass 60 may be deteriorated. was there.

For this reason, in the method for producing a laminated glass in the present embodiment, the temperature of the pair of glass plates 62 and 62 taken out from the furnace of the autoclave is cooled to at least room temperature after the completion of the main pressure bonding step, The evacuation is continuously performed until the softened resin intermediate film 61 is cured.
That is, in this embodiment, after the heating / pressurizing process by the autoclave is completed, the evacuation is continuously performed until the temperature of the stacked body 60 </ b> A reaches the normal temperature.
This makes it possible to prevent a phenomenon in which the outer dimensions of the resin intermediate film 61 shrink due to heat treatment, such as the resin intermediate film 61 made of fluororesin, and to improve the quality of the laminated glass 60. it can.

[Third and fourth embodiments]
Next, the manufacturing method of the laminated glass in 3rd and 4th embodiment is demonstrated using FIG.
In the following description, for convenience, the vertical direction of FIG. 5 is described as the vertical direction of the sealing members 101 and 201.

The sealing member 101 (or the sealing member 201) in the third and fourth embodiments has a configuration substantially equivalent to that of the above-described sealing member 1, while the shape of the decompression passage 111b (or the decompression passage 211b) is a sealing member. 1 and different.
Therefore, in the following description, differences from the sealing member 1 are mainly described, and descriptions of the same configuration as the sealing member 1 are omitted.

The sealing member 101 (or the sealing member 201) is a laminate of a plurality (for example, three in the present embodiment) in which a plurality of (for example, two in the present embodiment) resin intermediate films 151 and 151 are interposed. It is a member for sealing the peripheral part of the plate glass 152 * 152 * 152 which was made.
Further, the sealing member 101 (or the sealing member 201) communicates with a boundary portion (a laminated interface 153 of the laminated body 150A) between the plurality of plate glasses 152, 152, 152 and the plurality of resin intermediate films 151, 151. This is a member for securing 111b (or reduced pressure passage 211b) and evacuating the peripheral portions of the plurality of laminated glass sheets 152, 152, and 152 through the reduced pressure passage 111b (or reduced pressure passage 211b).

As shown in FIG. 5 (a), in the sealing member 101 according to the third embodiment, the central portion of the contact surface 111a of the base 111 in the thickness direction of the laminated body 150A has a substantially semicircular shape (more than Specifically, a decompression passage 111b having a groove shape with a semicircular shape in cross section is formed along the extending direction of the base 111.
Here, the decompression passage 111b is formed to have a longitudinal dimension capable of simultaneously covering the ends of the plurality of laminated resin intermediate films 151 and 151 in a cross-sectional view.

  In the state in which the sealing member 101 is fitted along the peripheral portion of the laminated body 150A composed of the plurality of resin intermediate films 151 and 151 and the plate glasses 152, 152, and 152, the contact surfaces 111a of the base 111 are on both outer sides. The pressure reducing passage 111b communicates with the laminated boundary 153 of the plurality of plate glasses 152, 152, 152 and the plurality of resin intermediate films 151, 151 by being in close contact with the end surfaces 152a of the plate glasses 152, 152.

On the other hand, as shown in FIG. 5B, in the sealing member 201 according to the fourth embodiment, the contact surface 211a of the base 211 has a semicircular shape in cross-sectional view at the center in the thickness direction of the stacked body 150. A plurality of (for example, two places in this embodiment) decompression passages 211b and 211b each having a groove shape are formed along the extending direction of the base 211.
Here, the decompression passages 211b and 211b are formed by the number of the resin intermediate films 151 and 151, and are respectively opposed to the end portions of the resin intermediate films 151 and 151 in a sectional view. Placed in.

  In the state where the sealing member 201 is fitted along the peripheral edge of the laminated body 150A composed of the plurality of resin intermediate films 151 and 151 and the plate glasses 152, 152, and 152, the contact surfaces 211a of the base 211 are on both outer sides. The plurality of decompression passages 211b and 211b communicate with a laminated boundary 153 of the plurality of plate glasses 152, 152, and 152 and the plurality of resin intermediate films 151 and 151 by being in close contact with the end surfaces 152a of the plate glasses 152 and 152. Yes.

In the sealing member 201 according to the fourth embodiment, the number of decompression passages 211b formed may exceed the number of resin intermediate films 151 (for example, three or more in this embodiment).
However, in this case, the decompression passage 211 b that is not located at the position facing the end face of the resin intermediate film 151 needs to be reliably closed by the end face of the plate glass 152.

[Fifth embodiment]
Next, the manufacturing method of the laminated glass in 5th embodiment is demonstrated using FIG. 6 and FIG.
In addition, regarding the following description, for convenience, the vertical direction in FIG. 7 is described as the vertical direction of the sealing member 301.

The sealing member 301 in the fifth embodiment has a configuration that is substantially equivalent to the sealing member 1 described above, but differs from the sealing member 1 in the cross-sectional shape at some corners.
Therefore, in the following description, differences from the sealing member 1 are mainly described, and descriptions of the same configuration as the sealing member 1 are omitted.

As shown in FIG. 6, in the sealing member 301 in the present embodiment, a connection port 315 that can be connected to one end of the piping member 321 is formed at a part of the corner.
The connection port 315 extends to the inner peripheral side of the sealing member 301 and communicates with the decompression passage 311b.

The other end of the piping member 321 is connected to the vacuum pump 322.
As a result, the decompression passage 311 b communicates with the vacuum pump 322 via the connection port 315 and the piping member 321.

The sealing member 301 is formed to have a substantially “U” -shaped cross-sectional shape.
Then, as shown in FIG. 7, the base 311, the support portion 312 extending from the contact surface 311 a of the base 311 with the plate glasses 352 and 352, and the plate glass 352 are positioned above the protruding portion 312 a. The first space portion 313 to be formed and the second space portion 314 located at the lower portion are formed.

  Here, in some corners having the connection port 315, first concave portions 316 and 316 are formed on both side surfaces in the thickness direction of the sealing member 301, respectively, and the protruding portions 312a of the support portions 312 and 312 are formed. Second protrusions 317 and 317 are formed on the protruding end surface of 312a, respectively.

In addition, since the opening part of the 1st recessed part 316 is obstruct | occluded by the plate-shaped obstruction | occlusion member 318, the said 1st recessed part 316 is comprised as a sealed space part, for example.
Moreover, the 2nd recessed part 317 is extended toward the downward side (folding part 312b side), and the 2nd space part 314 (the protrusion part 312a of the support part 312, the folding | returning part 312b, and the plate glass in the outermost layer of the laminated body 50A). And a space surrounded by 52 plate surfaces).

  Then, a first through path 319 is drilled from one end of the bottom surface 316a of the first recess 316 toward the connection port 315, and a second through path 320 is drilled from the other end toward the second recess 317. Is done.

Thus, in the sealing member 301 in the present embodiment, the connection port 315 communicates with the decompression passage 311b, while the second through passage 319, the first recess 316, and the second through passage 320 pass through the second. The space portion 314 is also communicated.
That is, the decompression passage 311b and the second space portion 314 are communicated with the vacuum pump 322 independently of each other via the connection port 315, and the vacuuming process for the second space portion 314 is performed independently of the decompression passage 311b. The first through path 319, the first recess 316, and the second through path 320, which are the above-described paths, can be performed.

By the way, in 1st embodiment, when the lamination | stacking interface 53 * 53 of 50 A of laminated bodies is evacuated through the pressure reduction channel | path 11b of the sealing member 1, as above-mentioned, in the pressure reduction channel | path 11b, resin-made intermediate films 51 protrudes from the end surfaces 52a and 52a of the plate glass 52 and 52.
Thereby, the thickness of the resin intermediate film 51 is reduced, and the side end portions of the respective plate glasses 52 and 52 may be slightly curved in the direction in which they are close to each other.
As a result, a slight gap is formed between the contact surface 11a of the sealing member 1 and the end surfaces 52a and 52a of the plate glasses 52 and 52, and between the surface of the plate glasses 52 and 52 and the protruding portions 12a and 12a. The decompression passage 11b is surrounded by the base portion 11, the support portion 12, and the plate glass 52 through the gap, and the first space portion 13 located above the protruding portion 12a and the second space located below. The unit 14 communicates with the unit 14.
Then, the first space portion 13 and the second space portion 14 are simultaneously evacuated via the decompression passage 11b, and the protruding portion 12a and the folded portion 12b are more firmly adhered to the plate surface of the plate glass 52. Thus, the air tightness of the decompression passage 11b is ensured.

When the inside of the decompression passage 11b is blocked by the resin intermediate film 51 protruding from the end faces 52a and 52a of the plate glasses 52 and 52, the laminated interfaces 53 and 53 of the laminated body 50A are caused to be sealed by the vacuum pump 22 (see FIG. 1). It cannot be evacuated, and it may be impossible to evacuate the first space 13 and the second space 14.
As a result, it is difficult to closely contact the protruding portion 12a and the folded portion 12b with the plate surface of the plate glass 52, and it is difficult to maintain the airtightness of the decompression passage 11b. In some cases, a plurality of sucking bubbles are generated and the quality of the laminated glass 50 is deteriorated.

In the present embodiment, by having the above-described configuration, for example, even if the inside of the decompression passage 311b is blocked by the resin intermediate film 351 protruding from the end surfaces 352a and 352a of the plate glasses 352 and 352, the vacuum pump 322 ( 6), the second space 314 can be evacuated, and the protruding portion 312a and the folded portion 312b can be brought into close contact with the plate surface of the plate glass 352.
Therefore, it becomes possible to ensure the airtightness of the decompression passage 311b, and for example, it is possible to prevent as much as possible the sucked bubbles generated as the resin intermediate film 351 contracts. In addition, since the stacked body 350A is firmly sandwiched in the thickness direction by the protruding portions 312a and 312a of the pair of support portions 312 and 312, the stacked posture of the stacked body 350A can be reliably maintained.
As a result, it is possible to prevent the quality of the laminated glass 350 from being deteriorated.

Note that the configurations of the decompression passage 311b and the second space portion 314 in the sealing member 301 are not limited to the present embodiment, and any configuration as long as they communicate with the vacuum pump 322 independently of each other. It may be.
For example, a connection port that communicates with the decompression passage 311b and a connection port that communicates with the second space portion 314 are provided, and the vacuum pump 322 communicates with each other via these connection ports. It may be.

1 Sealing member 11a Contact surface (contact portion)
11b Pressure reducing passage 12a Protruding part (clamping part)
12b Folding part (seal part)
DESCRIPTION OF SYMBOLS 50 Laminated glass 50A Laminate body 51 Resin intermediate film 52 Plate glass 53 Laminate interface 60 Laminated glass 60A Laminate body 61 Resin intermediate film 62 Plate glass 101 Sealing member 111a Contact surface (contact part)
111b Decompression passage 150 Laminated glass 150A Laminate 151 Resin intermediate film 152 Sheet glass 153 Lamination interface 201 Sealing member 211a Abutting surface (abutting part)
211b Pressure reducing passage

Claims (6)

At the same time that the laminated body laminated with a resin interlayer between at least two plate glasses is heated and pressurized by an autoclave, a sealing member is fitted to the periphery of the laminated body. A laminated glass manufacturing method for producing laminated glass by pressure-bonding the plate glasses to each other by performing a vacuum drawing process.
The sealing member is
In a state of being fitted to the peripheral edge of the laminate,
A decompression passage communicating with the laminate interface of the laminate;
A contact portion that contacts the end face of the laminate;
A sandwiching section for sandwiching the laminate in the thickness direction;
With
The vacuuming process is
By fitting the sealing member to the peripheral edge of the laminate,
Abutting the abutting part on the end surface of the laminate,
In a state where the laminate is sandwiched in the thickness direction by the sandwiching portion,
Performed through the decompression passage ,
The sealing member is
A seal part that is in close contact with the plate surface of the plate glass in the outermost layer of the laminate,
By fitting the sealing member to the peripheral edge of the laminate,
Adhering the seal part to the plate surface of the plate glass in the outermost layer of the laminate,
The vacuuming process is performed also on the space part surrounded by the sandwiching part, the seal part, and the plate surface of the plate glass in the outermost layer of the laminate ,
The manufacturing method of the laminated glass characterized by the above-mentioned. The decompression passage is formed in a semicircular shape in a sectional view.
Wherein the method for producing a laminated glass according to claim 1. The laminate is a laminate in which a resin intermediate film is interposed between two sheet glasses,
The radial dimension of the decompression passage is set to be 1.5 times or more and 3 times or less the gap dimension of the pair of plate glasses.
The manufacturing method of the laminated glass of Claim 1 or Claim 2 characterized by the above-mentioned. The vacuuming process for the space part is as follows:
Using a path independent of the decompression passage,
The manufacturing method of the laminated glass as described in any one of Claims 1-3 characterized by the above-mentioned. The resin intermediate film includes a fluororesin,
The manufacturing method of the laminated glass as described in any one of Claims 1-4 characterized by the above-mentioned. The vacuuming process is continuously performed after the heating / pressurizing process is completed until the temperature of the resinous intermediate film is equal to or lower than the glass transition point,
The manufacturing method of the laminated glass of Claim 5 characterized by the above-mentioned.

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