JP3290573B2 - Interlayer for laminated glass and laminated glass - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an interlayer film for laminated glass and a laminated glass using the same.

[0002]

2. Description of the Related Art Conventionally, a laminated glass in which an adhesive intermediate film typified by a plasticized polyvinyl butyral resin is sandwiched between two transparent glass plates has a large strength and is hardly broken, and even if broken, it is broken. Is a safe glass material that does not scatter, and is widely used, for example, in transportation equipment such as automobiles and airplanes or window glass of buildings and the like.

In the case of manufacturing such a laminated glass, an interlayer made of an adhesive thermoplastic resin is inserted between two glass plates, and the obtained laminate is pre-pressed to remain between the respective layers. After the air is degassed, the laminate is completely pressure-bonded to completely adhere the laminate.

[0004] The interlayer film used for the above laminated glass is free from the so-called blocking phenomenon that the interlayer films adhere to each other to form a block during storage, and has good workability when laminating the glass and the interlayer film. And it is required that the deaeration in the pre-compression bonding step be good. In particular, the deaeration at the time of pre-press bonding determines the quality of the laminated glass. If the degassing is insufficient, the transparency of the obtained laminated glass may deteriorate, or bubbles may be generated when the accelerated test is performed.

[0005] The overall performance of the interlayer film including the above-described degassing properties depends on the type of thermoplastic resin as a material and physical properties such as viscoelasticity. Is a major factor in determining its overall performance.

In particular, it is known that it is effective to form a large number of fine irregularities called embossments on the surface of an intermediate film. Conventionally, an intermediate film having an embossed surface is used. Examples of the form of the emboss include, for example, those having irregularities having random sizes and shapes,
There is one in which a large number of lattice-shaped grooves are formed.

As a conventional intermediate film having such an embossed surface formed thereon, for example, an embossed film having a specific arrangement direction formed on the front and back surfaces of the intermediate film (JP-A-6-12)
No. 7983), which are effective in preventing blocking between interlayer films, improving workability when laminating a glass plate and an interlayer film, and degassing in a preliminary pressure bonding step.

On the other hand, in recent years, applications of laminated glass have been diversified, and there has been a wide demand for improvement of added value of laminated glass, such as decorativeness, heat insulation, lamination, and the like. For this reason, it is difficult to satisfy all the required items only with an interlayer made of a single material, and instead of a single-layer interlayer made of a single resin film, a multilayer interlayer made of a multilayer resin film has been attracting attention. . For example, JP-A-4-254444
In Japanese Patent Application Laid-Open Publication No. H11-264, a multilayer intermediate film composed of at least two multilayer resin films in which two types of plasticized polyvinyl acetal resin films are laminated is proposed.

[0009]

However, when an emboss is formed on the surface of the above-mentioned multilayer intermediate film in order to prevent blocking, improve workability or improve deaeration, the outermost resin film has a relatively small thickness. In this case, not only is the emboss formed on the surface of the intermediate film, but also microscopic irregularities are generated at the interfaces between the resin layers constituting the multilayer resin film in accordance with the irregularities of the emboss. For this reason, minute disturbance occurs at the interface between the resin film layers, and the interface becomes non-uniform. As a result, when the opposite side of the glass is viewed through the laminated glass formed using such a multilayer intermediate film, there is a problem that an image on the opposite side appears distorted, that is, so-called optical distortion occurs.

The present invention solves the above problems,
The purpose is to prevent blocking between interlayer films, and furthermore, good workability and deaeration, and
An object of the present invention is to provide an interlayer film for laminated glass in which optical distortion does not occur and a laminated glass using the same.

[0011]

As a result of intensive studies to solve the above-mentioned problems, the distortion of an image generated in a multilayer interlayer film for laminated glass, the so-called optical distortion phenomenon, is reduced by the embossing formed on the surface of the interlayer film. It has been found that there is a great correlation with the roughness of the steel, and the present invention has been completed.

That is, according to the present invention,
In the interlayer film for laminated glass composed of a multilayer resin film in which the thickness of the outermost resin film is 45 μm or more and less than 200 μm, a large number of fine embosses having a roughness of 20 to 40 μm are formed on at least one surface of the interlayer film. An interlayer film for laminated glass is provided.

According to the present invention, there is provided an interlayer film for laminated glass comprising a multilayer resin film having an outermost resin film thickness of 200 μm or more and 720 μm or less, wherein at least one surface of the intermediate film has roughness. The present invention provides an interlayer film for laminated glass, wherein a large number of fine embosses having a thickness of 20 to 50 μm are formed.

According to a third aspect of the present invention, the multilayer resin film of the interlayer film for laminated glass according to the first or second aspect is a polyvinyl acetal resin (a) having an acetal group having 6 to 10 carbon atoms. ) And a plasticizer, and at least one resin film (A) having an acetal group having 3 to 3 carbon atoms.
The present invention provides an interlayer film for laminated glass, comprising: a laminate of at least one resin film (B) comprising a polyvinyl acetal resin (b) and a plasticizer.

In the present invention, the multilayer resin film of the interlayer film for laminated glass according to claim 1 or 2 has an acetal group having 4 to 6 carbon atoms, and
The average value of the mole fraction of the amount of ethylene groups to which acetyl groups are bonded to the total amount of ethylene groups in the main chain is 8 to 30 mol%.
And at least one resin film (C) composed of a polyvinyl acetal resin (c) and a plasticizer, and the amount of ethylene groups having 3 to 4 carbon atoms in the acetal group and the acetyl group bonded thereto, It is characterized in that a polyvinyl acetal resin (d) whose average value of the mole fraction to the total amount of ethylene groups in the main chain is 4 mol% or less and at least one resin film (D) composed of a plasticizer are laminated. To provide an interlayer film for laminated glass.

According to a fifth aspect of the present invention, there is provided a laminated glass intermediate film according to any one of the first to fourth aspects, wherein at least two plasticized polyvinyl butyral resin films are laminated. In addition, the present invention provides an interlayer film for laminated glass, wherein the difference in the average degree of polymerization between the polyvinyl butyral resins used for the adjacent resin films is 300 or more and 4500 or less.

According to a sixth aspect of the present invention, in the sixth aspect, the multilayer resin film of the interlayer film for a laminated glass according to any one of the first to fifth aspects is formed by laminating at least two plasticized polyvinyl butyral resin films. And an interlayer film for laminated glass, wherein the difference in the plasticizer content between adjacent resin films is 5 parts by weight or more and 50 parts by weight or less with respect to 100 parts by weight of each resin constituting each film. provide.

According to a seventh aspect of the present invention, there is provided a laminated glass intermediate film according to any one of the first to sixth aspects, wherein at least the outermost resin film is a plasticized polyvinyl butyral resin film. Are provided, and an interlayer film for laminated glass is provided.

According to the present invention, the multilayer resin film of the interlayer film for laminated glass according to claim 1 is a resin film having a glass transition temperature of 15 ° C. or less. Provided is an interlayer film for laminated glass characterized by being laminated.

Further, the present invention provides a laminated glass according to claim 9, wherein the interlayer film for laminated glass according to any one of claims 1 to 8 is sandwiched between two glass plates.

In the interlayer film for laminated glass of the present invention,
The shape of the emboss formed on the surface of the resin film made of a thermoplastic resin is not particularly limited, and various shapes such as a cone, a pyramid, a pseudo-pyramid, a prism, and a column such as a cone can be adopted. .

In addition, the bottom diameter or bottom side length and the interval (pitch) of the emboss are degassed (sealing property, air accumulation limit) at the time of alignment processing, workability (prevention of blocking between interlayer films, and interlayer film and glass plate). Can be changed as appropriate in consideration of, for example, appropriate slippage, etc., but in order to eliminate appearance defects, it is preferable that the bottom diameter or the base length be smaller,
On the other hand, a larger pitch is preferable. Generally, the bottom diameter or bottom length is 30 to 900 μm, and the pitch is 100 to
A range of 1000 μm is preferred, but not particularly limited thereto.

However, the roughness of the emboss is limited by the thickness of the outermost resin film. Here, the term “emboss roughness” refers to the height from the valley to the peak of the emboss. The interlayer film for laminated glass according to claim 1 is a case where the thickness of the outermost resin film of the multilayer resin film is 45 μm or more and less than 200 μm, and the emboss roughness is limited to 20 to 40 μm. If the thickness of the outermost resin film is less than 45 μm and the emboss roughness is 20 to 40 μm, minute disturbance occurs at the interface of each resin film, the interface becomes nonuniform, and so-called optical distortion occurs. On the other hand, when the thickness of the outermost resin film is 200 μm or more, the emboss roughness is not limited to 20 to 40 μm.

The interlayer film for laminated glass according to claim 2 is
The thickness of the outermost resin film of the multilayer resin film is 200 μm or more and 720
μm or less, and the emboss roughness is 20 to 50 μm
Is limited to If the thickness of the outermost resin film is less than 200 μm and the emboss roughness is particularly from more than 40 μm to 50 μm or less, minute disturbance occurs at the interface of each resin film, the interface becomes nonuniform, and so-called optical distortion occurs. On the other hand, 720
When it exceeds μm, the emboss roughness is 20 to 50 μm
It is not limited to.

Various arrangements such as a regular arrangement and a random arrangement can be adopted as the arrangement of the embossment, and the arrangement is not particularly limited, but the optical distortion phenomenon due to the disturbance of the interface hardly occurs. Considering that,
It is preferable that the emboss arrangement is regular.

Examples of a method for forming an emboss on the surface of the intermediate film include an emboss roll method, a calender roll method, and a profile extrusion method. The emboss roll method is preferable for obtaining a constant emboss quantitatively.

The thickness of the interlayer film for laminated glass of the present invention is not particularly limited, but is preferably in the range of 0.1 to 2 mm so as to be suitable for various uses. preferable.

As the resin film used in the present invention, a resin film conventionally used for laminated glass can be used. For example, a plasticized polyvinyl butyral-based resin film, a vinyl chloride-based resin film, an ethylene-vinyl acetate-based resin film, a urethane-based resin film, and the like can be given. These resin films are excellent in basic performance required for laminated glass, such as weather resistance, penetration resistance, scattering prevention of glass fragments, transparency, and no occurrence of optical distortion. In addition, various additives such as an ultraviolet absorber, an antioxidant, and an adhesion regulator may be contained or attached to these resin films.

The resin film used in the interlayer film for laminated glass according to claim 3 has an acetal group having 6 to 6 carbon atoms.
At least one resin film (A) comprising a polyvinyl acetal resin (a) having a carbon number of 10 and a plasticizer, and at least one resin film (b) comprising a polyvinyl acetal resin (b) having an acetal group having 3 to 4 carbon atoms and a plasticizer. And two resin films (B).

The above-mentioned resin film is excellent not only in basic performance required for laminated glass such as weather resistance, penetration resistance, scattering prevention of glass fragments, transparency, etc., but also in particular, sound insulation performance. .

A polyvinyl acetal resin having 6 to 10 carbon atoms in an acetal group is obtained by acetalizing polyvinyl alcohol with an aldehyde having 6 to 10 carbon atoms. Usually, an acetal group and an acetyl group are added to an ethylene group in the main chain. Group and a hydroxyl group.

The aldehyde having 6 to 10 carbon atoms used to obtain the polyvinyl acetal resin (a) having 6 to 10 carbon atoms in the acetal group includes n-hexyl aldehyde, 2-ethylbutyraldehyde, n-heptyl. Aliphatic, aromatic or alicyclic aldehydes such as aldehyde, n-octylaldehyde, n-nonylaldehyde, n-decylaldehyde, benzaldehyde and cinnamaldehyde are used alone or in combination of two or more.

If the carbon number of the aldehyde is less than 6, sufficient sound insulation performance may not be exhibited. In addition, carbon number 10
If it exceeds, the reactivity of acetalization of the aldehyde becomes poor, and blocking tends to occur during the reaction. As more preferred aldehyde, n-hexyl aldehyde having 6 to 8 carbon atoms,
N-octyl aldehyde, 2-ethyl butyraldehyde, etc. are used alone or in combination.

On the other hand, the aldehyde having 3 to 4 carbon atoms used for obtaining the polyvinyl acetal resin (b) having 3 to 4 carbon atoms of the acetal group includes propionaldehyde, n-butyraldehyde, isobutyraldehyde and the like. They are used alone or in combination of two or more.

The resin film used in the interlayer film for laminated glass according to claim 4 has an acetal group having 4 to 4 carbon atoms.
A polyvinyl acetal resin (c) having an average value of 8 to 30% by mole, and a mole fraction of the ethylene group to which the acetyl group is bonded to the total amount of ethylene groups in the main chain, and a plasticizer; And at least one resin film (C) consisting of the following, and the mole fraction of ethylene groups having 3 to 4 carbon atoms in the acetal group and bound to the acetyl group, based on the total amount of ethylene groups in the main chain. It is formed by laminating a polyvinyl acetal resin (d) having an average value of 4 mol% or less and at least one resin film (D) composed of a plasticizer.

The above-mentioned resin film is excellent not only in basic properties required for laminated glass such as weather resistance, penetration resistance, scattering prevention of glass fragments, transparency, etc., but also particularly excellent in sound insulation performance. .

The aldehyde having 4 to 6 carbon atoms used to obtain the polyvinyl acetal resin (c) having 4 to 6 carbon atoms in the acetal group includes n-butyraldehyde, isobutyraldehyde, valeraldehyde, and n-hexyl. Aldehydes, 2-ethylbutyraldehyde and the like are used alone or in appropriate combination.

If the number of carbon atoms of the aldehyde group is less than 4, sufficient sound insulation performance may not be exhibited. In addition, carbon number 6
Aldehydes in excess of 1 may have poor acetalization reactivity.

The aldehyde having 3 to 4 carbon atoms used for obtaining the polyvinyl acetal resin (d) having 3 to 4 carbon atoms of the acetal group includes propionaldehyde, n-butyraldehyde, isobutyraldehyde and the like. They are used alone or in combination of two or more.

In the polyvinyl acetal resin (c), the average value of the molar fraction of the amount of ethylene groups to which acetyl groups are bonded relative to the total amount of ethylene groups in the main chain (hereinafter referred to as “residual acetyl group amount”). Is limited to 8 to 30 mol%. The reason is that if this amount is less than 8 mol%, the sound insulation performance is not sufficiently exhibited, and if it exceeds 30 mol%, the reaction rate of aldehyde is remarkably reduced. In the polyvinyl acetal resin (c), a more preferable value of the residual acetyl group content is 10 to 24 mol%.

In the polyvinyl acetal resin (d), the amount of residual acetyl groups is limited to 4 mol% or less. The reason is that if this amount exceeds 4 mol%, the difference from the residual acetyl group amount of the polyvinyl acetal resin (c) is small,
This is because good sound insulation performance is not exhibited. A more preferable value of the residual acetyl group amount in the polyvinyl acetal resin (d) is 2 mol% or less.

As the aldehyde used for obtaining the polyvinyl acetal resins (c) and (d), in particular, n
Preference is given to using -butyraldehyde. By using n-butyraldehyde, the adhesive strength between the layers constituting the laminated film is further increased, and a polyvinyl butyral resin can be obtained in the same manner as in a conventional method for synthesizing a butyral resin.

The multilayer resin film used in the interlayer film for laminated glass according to claim 5, wherein at least two layers of a plasticized polyvinyl butyral resin film are laminated, and the average polymerization of the polyvinyl butyral resin used for each adjacent layer is performed. The difference between the degrees is not less than 300 and not more than 4500.

The above-mentioned resin film is excellent in basic performance required for laminated glass such as weather resistance, penetration resistance, scattering prevention of glass fragments, transparency and the like, and particularly excellent in penetration resistance.

The difference in the average degree of polymerization of the polyvinyl butyral resin used in each of the adjacent layers of the resin film needs to be 300 or more and 4500 or less. Difference in average polymerization degree is 3
When it is less than 00, the viscoelastic properties of each adjacent layer are similar, so that the absorption of impact energy at the interface becomes small,
Excellent penetration resistance cannot be obtained. On the other hand, the average degree of polymerization of the polyvinyl butyral resin used for each layer is 500 to 50.
00 is preferred. If the average degree of polymerization is less than 500, the rigidity of the resin film is remarkably reduced, so that the penetration resistance of the laminated glass is reduced. Conversely, if the average degree of polymerization exceeds 5,000, the film formability is poor. Therefore, the difference in the average degree of polymerization of the polyvinyl butyral resin used for each adjacent layer is 450
0 or less. A more preferable range of the difference in the average degree of polymerization is 5
00 to 3500.

The multilayer resin film used in the interlayer film for laminated glass according to claim 6 is formed by laminating at least two layers of a plasticized polyvinyl butyral resin film, and the difference in the plasticizer content of each adjacent layer is different. The amount is not less than 5 parts by weight and not more than 50 parts by weight based on 100 parts by weight of each resin constituting the film.

The difference in the content of the plasticizer between the adjacent layers of the resin film must be not less than 5 parts by weight and not more than 50 parts by weight based on 100 parts by weight of each resin constituting each film.
If the difference in the plasticizer content is less than 5 parts by weight, the viscoelastic properties of the adjacent layers are similar, so that the absorption of impact energy at the interface becomes small, and excellent penetration resistance cannot be obtained.
On the other hand, the plasticizer content of each layer is preferably from 20 to 70 parts by weight. When the content of the plasticizer is less than 20 parts by weight, the synthesis of the resin film is too high, so that the penetration resistance of the laminated glass is reduced. Conversely, if the content of the plasticizer exceeds 70 parts by weight, the plasticizer oozes out, which has an adverse effect on the adhesiveness of the laminated glass. Therefore, the difference between the plasticizer contents of the adjacent layers needs to be 50 parts by weight or less.

The multilayer resin film used in the interlayer film for laminated glass according to claim 7 is formed by laminating a plasticized polyvinyl butyral resin film at least on the outermost layer. It is sufficient that the plasticized polyvinyl butyral resin film is laminated on at least one surface, but if it is laminated on both surfaces, a greater effect can be obtained, which is preferable.

The above resin film is excellent in basic performance required for laminated glass such as weather resistance, penetration resistance, scattering prevention of glass fragments, transparency and the like, and particularly excellent in penetration resistance.
In addition, it is excellent in handling properties (handling properties) such as workability in combination and blocking resistance.

The average degree of polymerization of the polyvinyl butyral resin used for the resin film is preferably from 500 to 5,000.
If the average degree of polymerization is less than 500, the rigidity of the resin film is remarkably reduced, so that the penetration resistance of the laminated glass is reduced. Conversely, if the average degree of polymerization exceeds 5,000, the film formability is poor. The amount of residual acetyl groups in the polyvinyl butyral resin is preferably 30 mol or less. If the residual acetyl group content exceeds 30 mol%, the reactivity of the aldehyde in the production of the resin is reduced, so that a resin having a desired composition may not be obtained in some cases.

The average degree of butyralization of the polyvinyl butyral resin used for the resin film is generally preferably from 40 to 75 mol%. If the average degree of butyralization of the resin is less than 40 mol%, the compatibility with the plasticizer becomes poor, and it becomes difficult to mix the amount of the plasticizer necessary for securing the penetration resistance. Conversely, 75
A long reaction time is required to obtain a resin having an average degree of butyralization exceeding mol%, which is not preferable in terms of process.

In order to obtain a plasticizer used in the interlayer film for laminated glass according to claim 3 or 4 or a plasticized polyvinyl butyral resin film used in the interlayer film for laminated glass according to claim 5 or 7, As a plasticizer to be used, an organic plasticizer such as a monobasic acid ester or a polybasic acid ester, or a phosphoric acid plasticizer such as an organic phosphoric acid or an organic phosphorous acid is used.

The resin film used in the interlayer film for laminated glass according to claim 7 is formed by laminating at least one layer of a resin film having a glass transition temperature of 15 ° C. or less.

The above resin film is excellent in sound insulation performance, which is one of the high value-added functions required for laminated glass in recent years.

The glass transition temperature (Tg) of the resin film is 1
The temperature must be 5 ° C. or lower, and a more preferable range of Tg is −20 to 15 ° C. If the Tg of the resin film exceeds 15 ° C., sufficient sound insulation performance cannot be obtained. In addition, Tg is -20C
At lower temperatures, sufficient sound insulation performance cannot be obtained in a wide temperature range, which is not preferable.

Various additives such as an ultraviolet absorber, an antioxidant and an adhesion regulator may be contained in or adhered to these resin films.

As a method of manufacturing an interlayer film for a laminated glass in the present invention, for example, each resin film is separately formed, and these resin films are laminated and integrated by heating and pressing. There is a method of forming an emboss, a method of integrally laminating and molding each resin film by a multilayer extrusion method, and then forming an emboss on the surface.

In order to manufacture a laminated glass using the interlayer film for a laminated glass thus obtained, an ordinary method for producing a laminated glass is employed. For example, two transparent inorganic glass plates, or a rigid polycarbonate plate,
The intermediate film is sandwiched between organic glass plates such as a polymethyl methacrylate plate and the like, put in a rubber bag,
Pre-compression bonding is performed at about 70 to 110 ° C while suctioning under reduced pressure, and then using an autoclave or a press molding machine at a temperature of about 120 to 150 ° C for about 10 to 15
The final pressure bonding is performed at a pressure of kg / cm ² .

The distortion of the image through the laminated glass due to minute disturbance at the interface of each resin film layer generated in the interlayer film for the laminated glass, the so-called optical distortion phenomenon, is caused by the roughness of the emboss formed on the surface of the intermediate film. There is a great correlation. In particular, in the multilayer intermediate film having a relatively thin outermost resin film having a thickness of 45 μm or more and less than 200 μm, which is the subject of claim 1 of the present invention, the interface between the resin film layers is located at a position close to the surface of the intermediate film. Therefore, there is a tendency that the interface is easily disturbed when embossing is formed on the surface. The same can be said for a multilayer intermediate film having an outermost resin film thickness of 200 μm or more and 720 μm or less, which is the subject of claim 2 of the present invention.

In the present invention, the roughness of the emboss formed on at least one surface of the intermediate film is in the range of 20 to 40 μm in the first embodiment, and 20 to 5 in the second embodiment.
By limiting each to the range of 0 μm, when the emboss is formed on the surface of the intermediate film, the resin film layer becomes uniform without causing the disturbance of the interface between the resin film layers. Therefore, when laminated glass is manufactured using this intermediate film, optical distortion does not occur. In addition, blocking between the intermediate films can be prevented, and good results can be obtained in terms of workability and deaeration. In addition, in claims 3 to 5, by specifying the material of the multilayer resin film, in addition to prevention of optical distortion and blocking between interlayer films, improvement of workability and deaeration, excellent matching of sound insulation performance is achieved. An interlayer for glass is obtained.

[0061]

EXAMPLES Examples and comparative examples of the present invention are shown below.
The present invention will be described in more detail, but the present invention is not limited to these embodiments.

The glass transition temperature of the interlayer film was measured by using a viscoelastic spectrometer to measure viscoelasticity in a wide temperature range at a frequency of 10 Hz, and the ratio G ″ / storage elastic modulus G ′ to loss elastic modulus G ″ / The temperature at which the loss tangent tan δ, which is G ′, shows the maximum value was defined as the glass transition temperature.
The blocking property of the interlayer film for laminated glass obtained in each of Examples and Comparative Examples, and the degassing property and optical distortion of laminated glass using the same were evaluated. The evaluation method is described below.

[Evaluation Method of Blocking Property] The obtained interlayer film for laminated glass was cut into two 10 mm × 25 mm rectangles and stacked, and a load of 2 kg was applied thereon.
After standing for 25 hours, 180 ° by a tensile tester
The peeling force (the number of samples n: average value of n = 3) was measured. The larger the value, the higher the adhesive strength and the worse the blocking resistance.

[Evaluation Method of Degassing Property and Optical Distortion] Evaluation of degassing property and optical distortion was visually determined.

[Sound insulation performance] A sample was cut out from a laminated glass, and the sample was used to vibrate using a vibration generator for vibration damping test (vibrator “G21-005D” manufactured by Shinken Co., Ltd.) and obtained therefrom. Vibration characteristics are amplified by a mechanical impedance amplifier (“X-81” manufactured by Rion) and the vibration spectrum is analyzed by an FFT analyzer (“FFT Spectrum Analyzer HP manufactured by Yokogawa Hewlett-Packard”).
3582A "). From the ratio between the loss coefficient thus obtained and the resonance frequency with glass, a graph showing the relationship between the sound frequency (Hz) at 20 ° C. and the sound transmission loss (dB) was created. Sound transmission loss (TL value) was determined. This TL
The sound insulation performance of the laminated glass can be determined from the value.

(Example 1) [Preparation of each resin film] Polyvinyl butyral resin (PVB
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.13 mm. The obtained resin film is referred to as a resin film A (0.13 mm in thickness).

Also, 100 parts by weight of a vinyl chloride resin (PVC resin: vinyl chloride-ethylene-glycidyl methacrylate copolymer) and 40 parts by weight of di-2-ethylhexyl phthalate as a plasticizer were mixed, and the mixture was mixed. After sufficiently melt-kneading, a press molding machine was used to perform press molding to obtain a resin film having an average film thickness of 0.12 mm. The obtained resin film is referred to as a resin film B (0.12 mm in thickness).

[Production of Intermediate Film for Laminated Glass] The resin film A (having a thickness of 0.13 mm) and the resin film B (having a thickness of 0.1
2 mm), and the resin film A (film thickness 0.13 m
m) / resin film B (thickness 0.12 mm) / resin film A (thickness 0.13 mm) in order of three layers (total thickness 0.38 mm)
And press-fit with a press molding machine to integrate.
After obtaining a multilayer interlayer, an emboss was formed on the surface of the obtained interlayer by an embossing roll method to produce an interlayer for laminated glass. The roughness of the emboss of the obtained intermediate film was measured using a stylus-type surface roughness meter (Surfcom ER manufactured by Tokyo Seimitsu Co., Ltd.).
M-S09A, E-RM-S02A, E-MD-S39
When measured using A), it was 30 μm. Further, as a result of measuring the blocking property, an adhesive strength of 85 was obtained.
The value was as low as g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Manufacture of laminated glass] The above laminated glass
A transparent float glass (length 3)
0cm x width 30cm x thickness 3mm)
Put in a rubber bag, 20 torr vacuum degree, 20 minutes
After degassing, transfer to the oven with degassing, and further 9
Vacuum pressing was performed while maintaining the temperature at 0 ° C. for 30 minutes. in this way
The pre-pressed laminated glass is
In reave, temperature 135 ° C, pressure 12kg / cm ^Twoconditions
For 20 minutes to produce a laminated glass.
Evaluate the deaeration and optical distortion of the obtained laminated glass
As a result, it has excellent deaeration, no optical distortion phenomenon,
Was good.

(Example 2) [Preparation of each resin film] In Example 1, the average film thickness of the resin film A (0.13 mm in thickness) was changed to 0.19 mm, and the resin film A (0.1 mm in thickness) was used. 19 mm). Further, 100 parts by weight of a polyurethane resin (PU resin: a copolymer of 4,4-diisocyanatodicyclohexylmethane and polytetramethylene glycol) is sufficiently melt-kneaded with a mixing roll, and then molded by a press molding machine. Thickness 0.
A 38 mm resin film was obtained. The obtained resin film is formed into a resin film C.
(Film thickness 0.38 mm).

[Production of Intermediate Film for Laminated Glass] The resin film A (film thickness 0.19 mm) and the resin film C (film thickness 0.38 mm)
mm), and the resin film A (film thickness 0.19 mm) /
Resin film C (thickness 0.38 mm) / resin film A (thickness 0.1
9 mm) in that order, and laminated in three layers (total film thickness of 0.76 mm). Otherwise, the same procedure as in Example 1 was carried out to produce an interlayer film for laminated glass. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1, and it was 38 μm. Further, as a result of measuring the blocking property, the adhesive strength was as low as 80 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 3) [Preparation of each resin film] In Example 1, the average film thickness of the resin film A (0.13 mm) was changed to 0.19 mm, and the resin film A (thickness of 0.13 mm) was changed. 19 mm). Further, the average thickness of the resin film B (0.12 mm in thickness) was changed to 0.19 mm to prepare a resin film B (0.19 mm in thickness).

[Production of Intermediate Film for Laminated Glass] The resin film A (film thickness 0.19 mm) and the resin film B (film thickness 0.19 mm)
mm) and two layers of resin film A (film thickness 0.19 mm) / resin film B (film thickness 0.19 mm) (total film thickness 0.38 m
m), and otherwise performed in the same manner as in Example 1.
An interlayer for laminated glass was manufactured. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
μm. Further, as a result of measuring the blocking property, the adhesive strength was as low as 80 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Manufacture of Laminated Glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 4) [Preparation of each resin film] In Example 1, the average thickness of the resin film A (0.13 mm) was changed to 0.09 mm, and the average thickness of the resin film A (0.1 mm) was changed. 09 mm). Further, the average thickness of the resin film B (0.12 mm in thickness) was changed to 0.20 mm to prepare a resin film B (0.20 mm in thickness).

[Production of Intermediate Film for Laminated Glass] The resin film A (film thickness: 0.09 mm) and the resin film B (film thickness: 0.20 mm)
mm), resin film A (film thickness 0.09 mm) / resin film B (film thickness 0.20 mm) / resin film A (film thickness 0.09 m)
m) in this order, three layers (total film thickness of 0.38 mm) were overlapped, and the other steps were performed in the same manner as in Example 1 to produce an interlayer film for laminated glass. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1, and it was 25 μm.
In addition, as a result of measuring the blocking property, an adhesive strength of 9
The value was as low as 0 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 5) [Preparation of each resin film] In Example 1, the average thickness of the resin film A (0.13 mm thick) was changed to 0.05 mm, and the resin film A (thickness 0.1 mm) was changed. 05 mm). The average thickness of the resin film B (0.12 mm) was changed to 0.09 mm to prepare the resin film B (0.09 mm). Furthermore, in Example 2, the resin film C (thickness 0.38 mm)
Was changed to 0.19 mm to prepare a resin film C (film thickness 0.19 mm).

[Production of Intermediate Film for Laminated Glass] The resin film A (0.05 mm in thickness) and the resin film B (0.09 in thickness)
mm) and the resin film C (film thickness 0.19 mm)
Resin film A (thickness 0.05 mm) / resin film C (thickness 0.1
9 mm) / resin film A (0.05 mm thickness) / resin film B
(Film thickness 0.09 mm) in order of 4 layers (total film thickness 0.38 m)
m), and otherwise performed in the same manner as in Example 1.
An interlayer for laminated glass was manufactured. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 95 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Comparative Example 1) [Preparation of each resin film and production of interlayer film for laminated glass] Except that the emboss roughness in Example 1 was changed to 30 µm to 43 µm to prepare an interlayer film for laminated glass. In the same manner as in Example 1, an interlayer film for laminated glass was obtained. As a result of measuring the blocking property of the obtained intermediate film, it showed a low value of 80 g / cm in adhesive strength. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical strain. As a result, although excellent in degassing properties, optical strain phenomenon occurred and it was defective.

(Comparative Example 2) [Preparation of each resin film and production of interlayer film for laminated glass] Except for changing the emboss roughness of 30 μm in Example 1 to 22 μm and preparing an interlayer film for laminated glass, In the same manner as in Example 1, an interlayer film for laminated glass was obtained. As a result of measuring the blocking property of the obtained intermediate film, it showed a high value of 170 g / cm in adhesive strength. That is, it was found that the blocking resistance was poor and the workability was poor.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The resulting laminated glass was evaluated for degassing properties and optical distortion. As a result, the transparency was insufficient and poor degassing occurred. In addition, the optical distortion phenomenon did not occur, and it was good.

(Comparative Example 3) [Preparation of each resin film] In Example 1, the average thickness of the resin film A (thickness 0.13 mm) was changed to 0.04 mm, and the resin film A (thickness 0.1 mm) was changed. 04 mm) was prepared. The average thickness of the resin film B (0.12 mm) was changed to 0.30 mm to prepare the resin film B (0.30 mm).

[Production of Intermediate Film for Laminated Glass] The resin film A (film thickness 0.04 mm) and the resin film B (film thickness 0.30 mm)
mm), resin film A (film thickness 0.04 mm) / resin film B (film thickness 0.30 mm) / resin film A (film thickness 0.03 m
m) in this order, three layers (total film thickness of 0.38 mm) were overlapped, and the other steps were performed in the same manner as in Example 1 to produce an interlayer film for laminated glass. When the roughness of the emboss of the obtained intermediate film was measured in the same manner as in Example 1, it was 35 μm.
In addition, as a result of measuring the blocking property, the adhesive strength 8
The value was as low as 0 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The resulting laminated glass was evaluated for degassing properties and optical distortion. As a result, although excellent in degassing properties, an optical distortion phenomenon occurred and the resulting laminated glass was defective.

Table 1 summarizes the results of Examples 1 to 5 and Comparative Examples 1 to 3.

[0090]

[Table 1]

Example 6 Preparation of Each Resin Film Polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.32 mm. The obtained resin film is referred to as a resin film D (thickness 0.32 mm).

Also, 100 parts by weight of a vinyl chloride resin (PVC resin: vinyl chloride-ethylene-glycidyl methacrylate copolymer) and 40 parts by weight of di-2-ethylhexyl phthalate as a plasticizer were mixed, and the mixture was mixed. After sufficiently melt-kneading, a press molding machine was used to perform press molding to obtain a resin film having an average film thickness of 0.12 mm. The obtained resin film is referred to as a resin film E (having a thickness of 0.12 mm).

[Production of Intermediate Film for Laminated Glass] The resin film D (thickness 0.32 mm) and the resin film E (thickness 0.1
2 mm) and the resin film D (thickness 0.32 m
m) / resin film E (thickness 0.12 mm) / resin film D (thickness 0.32 mm) in order of three layers (total thickness 0.76 mm)
The other processes were the same as in Example 1 to produce an interlayer film for laminated glass. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
Met. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 84 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Manufacture of laminated glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 7) [Preparation of each resin film] In Example 6, the average thickness of the resin film D (thickness: 0.32 mm) was changed to 0.71 mm, and the resin film D (thickness: 0.3 mm) was changed. 71 mm). Further, 100 parts by weight of a polyurethane resin (PU resin: a copolymer of 4,4-diisocyanatodicyclohexylmethane and polytetramethylene glycol) is sufficiently melt-kneaded with a mixing roll, and then molded by a press molding machine. Thickness 0.
A 10 mm resin film was obtained. The obtained resin film is formed into a resin film F.
(Film thickness 0.10 mm).

[Production of Intermediate Film for Laminated Glass] The resin film D (film thickness 0.71 mm) and the resin film F (film thickness 0.10
mm), and the resin film D (thickness 0.71 mm) /
Resin film F (film thickness 0.10 mm) / resin film D (film thickness 0.7
3 mm (total thickness: 1.52 mm) in this order, and in the same manner as in Example 1 to produce an interlayer film for laminated glass. When the roughness of the emboss of the obtained intermediate film was measured in the same manner as in Example 1, it was 48 μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 65 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 8) [Preparation of each resin film] In Example 6, the average film thickness of the resin film D (thickness 0.32 mm) was changed to 0.38 mm, and the resin film D (thickness 0.3 mm) was changed. 38 mm). Further, the average thickness of the resin film E (thickness 0.12 mm) was changed to 0.38 mm to prepare the resin film E (thickness 0.38 mm).

[Production of Intermediate Film for Laminated Glass] The resin film D (thickness 0.38 mm) and the resin film E (thickness 0.38 mm)
mm) and two layers of resin film D (thickness 0.38 mm) / resin film E (thickness 0.38 mm) (total thickness 0.76 m).
m), and otherwise performed in the same manner as in Example 1.
An interlayer for laminated glass was manufactured. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
μm. In addition, as a result of measuring the blocking property, the adhesive strength was as low as 70 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Manufacture of laminated glass] A laminated glass was manufactured in the same manner as in Example 6. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 9) [Preparation of each resin film] In Example 6, the average thickness of the resin film D (thickness: 0.32 mm) was changed to 0.26 mm, and the resin film D (thickness: 0.3 mm) was changed. 26 mm). Further, the average thickness of the resin film E (film thickness 0.12 mm) was changed to 0.24 mm to prepare the resin film E (film thickness 0.24 mm).

[Production of multilayer interlayer film for laminated glass] The resin film D (film thickness 0.26 mm) and the resin film E (film thickness 0.
24 mm), the resin film D (film thickness 0.26 mm) /
Resin film E (film thickness 0.24 mm) / resin film D (film thickness 0.2
6 mm) in this order, and superimposed on three layers (total film thickness 0.76 mm), and otherwise performed in the same manner as in Example 1 to produce an interlayer film for laminated glass. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1, and it was 25 μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 90 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Manufacture of laminated glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 10) [Preparation of each resin film] In Example 6, the average thickness of the resin film D (thickness 0.32 mm) was changed to 0.20 mm, and the resin film D (thickness 0.3 mm) was changed. 20 mm). Further, the average thickness of the resin film E (0.12 mm in thickness) was changed to 0.25 mm to prepare a resin film E (0.25 mm in thickness). Further, in Example 7, the resin film F (film thickness 0.10 mm)
Was changed to 0.11 mm to prepare a resin film F (film thickness 0.11 mm).

[Production of Intermediate Film for Laminated Glass] The resin film D (film thickness 0.20 mm) and the resin film E (film thickness 0.25 mm)
mm) and the resin film F (0.11 mm in film thickness),
Resin film D (film thickness 0.20 mm) / resin film F (film thickness 0.1
1 mm) / resin film D (film thickness 0.20 mm) / resin film E
(Film thickness 0.25 mm) in order of 4 layers (total film thickness 0.76 m)
m), and otherwise performed in the same manner as in Example 1.
An interlayer for laminated glass was manufactured. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 96 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Manufacture of laminated glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Comparative Example 4) [Preparation of each resin film and production of interlayer film for laminated glass] The same procedures as in Example 6 were carried out except that the emboss roughness was changed from 30 µm to 53 µm to prepare an interlayer film for laminated glass. In the same manner as in Example 6, an interlayer film for laminated glass was obtained. As a result of measuring the blocking property of the obtained interlayer film, the adhesive strength showed a low value of 60 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical strain. As a result, although excellent in degassing properties, optical strain phenomenon occurred and it was defective.

(Comparative Example 5) [Preparation of each resin film and production of multilayer interlayer film for laminated glass] The emboss roughness of Example 6 was changed from 18 μm to 30 μm.
m in the same manner as in Example 6, except that an interlayer film for laminated glass was prepared, to obtain an interlayer film for laminated glass. As a result of measuring the blocking property of the obtained intermediate film, it showed a high value of 170 g / cm in adhesive strength. That is, it was found that the blocking resistance was poor and the workability was poor.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. As a result of evaluating the degassing property and the optical distortion of the obtained laminated glass, poor degassing occurred. In addition, although the optical distortion phenomenon did not occur and was good, the transparency was insufficient.

Examples 6 to 10 and Comparative Examples 4 to 5
Table 2 summarizes the results.

[0112]

[Table 2]

(Example 11) [Preparation of each resin film] 100 parts by weight of polyvinyl acetal resin (acetal group carbon number 6, degree of polymerization 1700, residual acetyl group amount 0.9 mol%, acetalization degree 65 mol%) And 40 parts by weight of triethylene glycol di-2-ethyl butyrate as a plasticizer, and then sufficiently melt-kneaded with a mixing roll, followed by press molding with a press molding machine to obtain an average film thickness of 0.12 mm. A resin film was obtained. The obtained resin film is referred to as a resin film G (film thickness 0.12 mm).

Further, polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 0.9 mol%, butyralization degree 66 mol%) and 40 parts by weight of triethylene glycol di-2-ethylbutyrate as a plasticizer were mixed. After sufficiently melting and kneading with a mixing roll, press-molding with a press molding machine,
A resin film having an average thickness of 0.13 mm was obtained. The obtained resin film is referred to as a resin film H (having a thickness of 0.13 mm).

[Production of Intermediate Film for Laminated Glass] The resin film G (having a thickness of 0.12 mm) and the resin film H (having a thickness of 0.1
3 mm), and the resin film H (film thickness 0.13 m
m) / resin film G (thickness 0.12 mm) / resin film H (thickness 0.13 mm) in three layers (total thickness 0.38 mm)
The other processes were the same as in Example 1 to produce an interlayer film for laminated glass. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
Met. Further, as a result of measuring the blocking property, the adhesive strength showed a low value of 83 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Manufacture of Laminated Glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 12) [Preparation of each resin film] 100 parts by weight of polyvinyl acetal resin (acetal group carbon number 8, degree of polymerization 1700, residual acetyl group amount 0.9 mol%, acetalization degree 63 mol%) And 40 parts by weight of triethylene glycol di-2-ethyl butyrate as a plasticizer, and the mixture was sufficiently melt-kneaded with a mixing roll, followed by press molding with a press molding machine to obtain an average film thickness of 0.38 mm. A resin film was obtained. The obtained resin film is referred to as a resin film G (thickness 0.38 mm).

Further, 100 parts by weight of a polyvinyl acetal resin (having 3 carbon atoms in the acetal group, a degree of polymerization of 1700, an amount of residual acetyl group of 0.9 mol%, and a degree of acetalization of 66 mol%), and triethylene glycol di-vinyl as a plasticizer were used. The mixture was mixed with 40 parts by weight of 2-ethyl butyrate, sufficiently melt-kneaded with a mixing roll, and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.19 mm. The obtained resin film is referred to as a resin film H (having a thickness of 0.19 mm).

[Production of Intermediate Film for Laminated Glass] The resin film G (thickness 0.38 mm) and the resin film H (thickness 0.19)
mm), and the resin film H (film thickness 0.19 mm) /
Resin film G (thickness 0.38 mm) / resin film H (thickness 0.1
9 mm) in that order, and laminated in three layers (total film thickness of 0.76 mm). Otherwise, the same procedure as in Example 1 was carried out to produce an interlayer film for laminated glass. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1, and it was 39 μm. Further, as a result of measuring the blocking property, the adhesive strength showed a low value of 81 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 13) [Preparation of each resin film] 100 parts by weight of a polyvinyl acetal resin (acetal group having 10 carbon atoms, polymerization degree of 1700, residual acetyl group amount of 0.9 mol%, acetalization degree of 60 mol%) And triethylene glycol di-2- as a plasticizer
The mixture was mixed with 40 parts by weight of ethyl butyrate, sufficiently melt-kneaded with a mixing roll, and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.12 mm. The obtained resin film is referred to as a resin film G (film thickness 0.12 mm).

Further, polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 0.9 mol%, butyralization degree 66 mol%) and 40 parts by weight of triethylene glycol di-2-ethylbutyrate as a plasticizer were mixed. After sufficiently melting and kneading with a mixing roll, press-molding with a press molding machine,
A resin film having an average thickness of 0.05 mm was obtained. The obtained resin film is referred to as a resin film H (having a thickness of 0.05 mm).

[Production of Intermediate Film for Laminated Glass] The resin film G (having a thickness of 0.12 mm) and the resin film H (having a thickness of 0.0
5 mm), and the resin film H (thickness: 0.05 m)
m) / resin film G (thickness 0.12 mm) / resin film H (thickness 0.05 mm) / resin film G (thickness 0.12 mm) / resin film H (thickness 0.05 mm) in this order. Layer (total film thickness of 0.
39 mm), and the others were the same as in Example 1 to produce a laminated glass multilayer interlayer. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1, and was found to be 21 μm. Further, as a result of measuring the blocking property, the adhesive strength showed a low value of 98 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 14) [Preparation of each resin film] 100 parts by weight of polyvinyl acetal resin (acetal group carbon number 6, degree of polymerization 1700, residual acetyl group amount 0.9 mol%, acetalization degree 65 mol%) And 40 parts by weight of triethylene glycol di-2-ethyl butyrate as a plasticizer, and then sufficiently melt-kneaded with a mixing roll, followed by press molding with a press molding machine to obtain an average film thickness of 0.12 mm. A resin film was obtained. The obtained resin film is referred to as a resin film G (film thickness 0.12 mm).

Also, polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 0.9 mol%, butyralization degree 66 mol%) and 40 parts by weight of triethylene glycol di-2-ethylbutyrate as a plasticizer were mixed. After sufficiently melting and kneading with a mixing roll, press-molding with a press molding machine,
A resin film having an average thickness of 0.32 mm was obtained. The obtained resin film is referred to as a resin film H (having a thickness of 0.32 mm).

[Production of Intermediate Film for Laminated Glass] The resin film G (film thickness 0.12 mm) and the resin film H (film thickness 0.3
2 mm) and the resin film H (film thickness 0.32 m
m) / resin film G (thickness 0.12 mm) / resin film H (thickness 0.32 mm) in order of three layers (total thickness 0.76 mm)
Then, an interlayer film for laminated glass was manufactured in the same manner as in Example 1 except for the above. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
Met. Further, as a result of measuring the blocking property, the adhesive strength was as low as 80 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 15) [Preparation of each resin film] 100 parts by weight of polyvinyl acetal resin (acetal group carbon number 8, degree of polymerization 1700, residual acetyl group amount 0.9 mol%, acetalization degree 63 mol%) And 40 parts by weight of triethylene glycol di-2-ethyl butyrate as a plasticizer, and then sufficiently melt-kneaded with a mixing roll, followed by press molding with a press molding machine to obtain an average film thickness of 0.10 mm. A resin film was obtained. The obtained resin film is referred to as a resin film G (having a thickness of 0.10 mm).

Further, 100 parts by weight of a polyvinyl acetal resin (having 3 carbon atoms in the acetal group, a degree of polymerization of 1700, an amount of the residual acetyl group of 0.9 mol%, and a degree of acetalization of 66 mol%), and triethylene glycol di-vinyl as a plasticizer were used. After mixing with 40 parts by weight of 2-ethyl butyrate and sufficiently kneading the mixture with a mixing roll, the mixture was press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.71 mm. The obtained resin film is referred to as a resin film H (having a thickness of 0.71 mm).

[Production of Intermediate Film for Laminated Glass] The resin film G (film thickness 0.10 mm) and the resin film J (film thickness 0.7
1 mm), and the resin film H (thickness 0.71 m)
m) / resin film G (thickness 0.10 mm) / resin film H (thickness 0.71 mm) in three layers (total thickness 1.52 mm)
Then, an interlayer film for laminated glass was manufactured in the same manner as in Example 1 except for the above. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
Met. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 65 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 16) [Preparation of each resin film] 100 parts by weight of a polyvinyl acetal resin (acetal group carbon number 10, polymerization degree 1700, residual acetyl group amount 0.9 mol%, acetalization degree 60 mol%) And triethylene glycol di-2- as a plasticizer
After mixing with 40 parts by weight of ethyl butyrate, the mixture was sufficiently melt-kneaded with a mixing roll, and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.34 mm. The obtained resin film is referred to as a resin film G (0.34 mm in thickness).

Further, polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 0.9 mol%, butyralization degree 66 mol%) and 40 parts by weight of triethylene glycol di-2-ethylbutyrate as a plasticizer were mixed. After sufficiently melting and kneading with a mixing roll, press-molding with a press molding machine,
A resin film having an average thickness of 0.21 mm was obtained. The obtained resin film is called a resin film H (film thickness 0.21 mm).

[Production of Intermediate Film for Laminated Glass] The resin film G (having a thickness of 0.34 mm) and the resin film H (having a thickness of 0.2
1 mm), and the resin film H (film thickness 0.21 m
m) / resin film G (thickness 0.34 mm) / resin film H (thickness 0.21 mm) in three layers (total thickness 0.76 mm)
Then, an interlayer film for laminated glass was manufactured in the same manner as in Example 1 except for the above. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
Met. Further, as a result of measuring the blocking property, the adhesive strength showed a low value of 97 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

The results of Examples 11 to 16 are summarized in Table 3.

[0138]

[Table 3]

(Example 17) [Preparation of each resin film] 100 parts by weight of a polyvinyl acetal resin (carbon number of acetal group, degree of polymerization 1,700, residual acetyl group amount 12 mol%, acetalization degree 58 mol%), After mixing with 40 parts by weight of triethylene glycol di-2-ethyl butyrate as a plasticizer, sufficiently mixing and kneading the mixture with a mixing roll, the mixture is press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.12 mm. I got The obtained resin film is referred to as a resin film I (0.12 mm in thickness).

Also, 100 parts by weight of a polyvinyl acetal resin (carbon number of acetal group, amount of residual acetyl group 1 mol%, degree of acetalization 66 mol%) and triethylene glycol di-2-ethyl butyrate 40 as a plasticizer were used. The mixture was sufficiently melt-kneaded with a mixing roll, and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.13 mm. The obtained resin film is referred to as a resin film J (film thickness 0.13 mm).

[Production of Intermediate Film for Laminated Glass] The resin film I (having a thickness of 0.12 mm) and the resin film J (having a thickness of 0.1
3 mm), and the resin film J (film thickness 0.13 m
m) / resin film I (thickness 0.12 mm) / resin film J (thickness 0.13 mm) in three layers (total thickness 0.38 mm)
Then, an interlayer film for laminated glass was manufactured in the same manner as in Example 1 except for the above. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
Met. In addition, as a result of measuring the blocking property, the adhesive strength was as low as 86 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for deaeration, optical distortion, and sound insulation performance. As a result, it was excellent in deaeration, no optical distortion phenomenon occurred, and sound insulation performance was also excellent.

(Example 18) [Preparation of each resin film] 100 parts by weight of a polyvinyl acetal resin (acetal group carbon number 6, polymerization degree 1700, residual acetyl group amount 8 mol%, acetalization degree 55 mol%) After mixing 40 parts by weight of triethylene glycol di-2-ethyl butyrate as a plasticizer, and sufficiently mixing and kneading the mixture with a mixing roll, the mixture is press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.38 mm. I got The obtained resin film is referred to as a resin film I (thickness 0.38 mm).

Also, 100 parts by weight of a polyvinyl acetal resin (carbon number of acetal group, degree of polymerization 1,700, amount of residual acetyl group 4 mol%, degree of acetalization 64 mol%) and triethylene glycol di-2-propyl as a plasticizer The mixture was mixed with 40 parts by weight of ethyl butyrate, sufficiently melt-kneaded with a mixing roll, and then press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.19 mm. The obtained resin film is referred to as a resin film J (0.19 mm in thickness).

[Production of Interlayer for Laminated Glass] The resin film I (thickness 0.38 mm) and the resin film J (thickness 0.19)
mm), and the resin film J (film thickness 0.19 mm) /
Resin film I (thickness 0.38 mm) / resin film J (thickness 0.1
9 mm) in that order, and laminated in three layers (total film thickness of 0.76 mm). Otherwise, the same procedure as in Example 1 was carried out to produce an interlayer film for laminated glass. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1, and it was 38 μm. Further, as a result of measuring the blocking property, the adhesive strength showed a low value of 81 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for deaeration, optical distortion, and sound insulation performance. As a result, it was excellent in deaeration, no optical distortion phenomenon occurred, and sound insulation performance was also excellent.

(Example 19) [Preparation of each resin film] 100 parts by weight of a polyvinyl acetal resin (acetal group carbon number 4, degree of polymerization 1700, residual acetyl group amount 28 mol%, acetalization degree 50 mol%), After mixing with 40 parts by weight of triethylene glycol di-2-ethyl butyrate as a plasticizer, sufficiently mixing and kneading the mixture with a mixing roll, the mixture is press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.12 mm. I got The obtained resin film is referred to as a resin film I (0.12 mm in thickness).

Further, 100 parts by weight of a polyvinyl acetal resin (having 3 carbon atoms in the acetal group, a degree of polymerization of 1700, a residual acetyl group content of 1 mol% and a degree of acetalization of 67 mol%), and triethylene glycol di-2-propyl as a plasticizer were used. Ethyl butyrate (40 parts by weight) was mixed, sufficiently mixed and kneaded with a mixing roll, and then press-formed with a press forming machine to obtain a resin film having an average film thickness of 0.05 mm. The obtained resin film is referred to as a resin film J (thickness: 0.05 mm).

[Production of Intermediate Film for Laminated Glass] The resin film I (having a thickness of 0.12 mm) and the resin film J (having a thickness of 0.02 mm)
5 mm), and the resin film J (thickness: 0.05 m)
m) / resin film I (thickness 0.12 mm) / resin film J (thickness 0.05 mm) / resin film I (thickness 0.12 mm) / resin film J (thickness 0.05 mm) in this order. Layer (total film thickness of 0.
39 mm), and the others were the same as in Example 1 to produce an interlayer film for laminated glass. When the roughness of the emboss of the obtained intermediate film was measured in the same manner as in Example 1, it was 22 μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 96 g / cm.
That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for deaeration, optical distortion, and sound insulation performance. As a result, it was excellent in deaeration, no optical distortion phenomenon occurred, and sound insulation performance was also excellent.

(Example 20) [Preparation of each resin film] In Example 17, the resin film I (0.12 mm in thickness) was used as it was. Also, the resin film J
The resin film J (film thickness 0.32 mm) was prepared by changing the average film thickness (film thickness 0.13 mm) to 0.32 mm.

[Production of Intermediate Film for Laminated Glass] The resin film I (having a thickness of 0.12 mm) and the resin film J (having a thickness of 0.3 mm)
2 mm), and the resin film J (thickness: 0.32 m
m) / resin film I (thickness 0.12 mm) / resin film J (thickness 0.32 mm) in three layers (total thickness 0.76 mm)
Then, an interlayer film for laminated glass was manufactured in the same manner as in Example 1 except for the above. When the roughness of the emboss of the obtained intermediate film was measured in the same manner as in Example 1, it was 33 μm.
Met. Further, as a result of measuring the blocking property, the adhesive strength showed a low value of 83 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for deaeration, optical distortion, and sound insulation performance. As a result, it was excellent in deaeration, no optical distortion phenomenon occurred, and sound insulation performance was also excellent.

(Example 21) [Preparation of each resin film] In Example 18, the average thickness of the resin film I (0.38 mm) was changed to 0.10 mm, and the resin film I (thickness: 0.3 mm) was changed. 10 mm). Further, the average thickness of the resin film J (0.19 mm thickness) was changed to 0.71 mm to prepare the resin film J (0.71 mm thickness).

[Production of Intermediate Film for Laminated Glass] The resin film I (0.10 mm thick) and the resin film J (0.7 mm thick)
1 mm), and the resin film J (0.71 m thick)
m) / resin film I (thickness 0.10 mm) / resin film J (thickness 0.71 mm) in three layers (total thickness 1.52 mm)
Then, an interlayer film for laminated glass was manufactured in the same manner as in Example 1 except for the above. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
Met. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 66 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for deaeration, optical distortion, and sound insulation performance. As a result, it was excellent in deaeration, no optical distortion phenomenon occurred, and sound insulation performance was also excellent.

(Example 22) [Preparation of each resin film] In Example 19, the average thickness of the resin film I (0.12 mm in thickness) was changed to 0.36 mm, and the resin film I (thickness of 0.12 mm) was changed. 36 mm). Further, the average thickness of the resin film J (thickness: 0.05 mm) was changed to 0.20 mm to prepare a resin film J (thickness: 0.20 mm).

[Production of Intermediate Film for Laminated Glass] The resin film I (thickness 0.36 mm) and the resin film J (thickness 0.2
0 mm), and the resin film J (film thickness 0.20 m
m) / resin film I (thickness 0.36 mm) / resin film J (thickness 0.20 mm) in three layers (total thickness 0.76 mm)
Then, an interlayer film for laminated glass was manufactured in the same manner as in Example 1 except for the above. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
Met. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 99 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for deaeration, optical distortion, and sound insulation performance. As a result, it was excellent in deaeration, no optical distortion phenomenon occurred, and sound insulation performance was also excellent.

The results of Examples 17 to 22 are summarized in Table 4.

[0161]

[Table 4]

(Example 23) [Preparation of each resin film] Polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.13 mm. The obtained resin film is referred to as a resin film K (0.13 mm in thickness).

Further, polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 2200, residual acetyl group content 1 mol%, butyralization degree 65 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.12 mm. The obtained resin film is referred to as a resin film L (having a thickness of 0.12 mm).

[Production of Intermediate Film for Laminated Glass] The resin film K (having a thickness of 0.13 mm) and the resin film L (having a thickness of 0.1
2 mm), and the resin film K (film thickness 0.13 m
m) / resin film L (film thickness 0.12 mm) / resin film K (film thickness 0.13 mm) in this order: three layers (total film thickness 0.38 mm)
Then, an interlayer film for laminated glass was manufactured in the same manner as in Example 1 except for the above. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
Met. In addition, as a result of measuring the blocking property, the adhesive strength was as low as 85 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Manufacture of Laminated Glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 24) [Preparation of each resin film] Polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 5000, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.19 mm. The obtained resin film is referred to as a resin film K (0.19 mm in thickness).

Further, polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1000, residual acetyl group content 1 mol%, butyralization degree 65 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.38 mm. The obtained resin film is referred to as a resin film L (thickness 0.38 mm).

[Production of Intermediate Film for Laminated Glass] The resin film K (film thickness 0.19 mm) and the resin film L (film thickness 0.38 mm)
mm), and the resin film K (film thickness 0.19 mm) /
Resin film L (thickness 0.38 mm) / resin film K (thickness 0.1
9 mm) in that order, and laminated in three layers (total film thickness of 0.76 mm). Otherwise, the same procedure as in Example 1 was carried out to produce an interlayer film for laminated glass. When the roughness of the emboss of the obtained intermediate film was measured in the same manner as in Example 1, it was 40 μm. Further, as a result of measuring the blocking property, the adhesive strength was as low as 80 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 25) [Preparation of each resin film] Polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.05 mm. The obtained resin film is referred to as a resin film K (thickness: 0.05 mm).

Further, a polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 500, residual acetyl group content 1 mol%, butyralization degree 65 mol%), and triethylene glycol di-2-ethylbutyrate 40 as a plasticizer
After the mixture was sufficiently melt-kneaded with a mixing roll, the mixture was press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.14 mm. The obtained resin film is referred to as a resin film L (having a thickness of 0.14 mm).

Further, a polyvinyl butyral resin (PV
B resin: polymerization degree 4000, residual acetyl group content 1 mol%,
100 parts by weight of butyralization degree) and 40 parts by weight of triethylene glycol di-2-ethyl butyrate as a plasticizer are mixed, sufficiently melt-kneaded with a mixing roll, and then pressed by a press molding machine. By molding, a resin film having an average thickness of 0.14 mm was obtained. The obtained resin film is referred to as a resin film M (film thickness 0.14 mm).

[Production of Intermediate Film for Laminated Glass] The above resin film K (thickness: 0.05 mm) and resin film L (thickness: 0.14
mm) and a resin film M (film thickness 0.14 mm), which are formed into a resin film K (film thickness 0.05 mm) / resin film L (film thickness 0.1 mm).
4 mm) / resin film M (film thickness 0.14 mm) / resin film K
(Thickness: 0.05 mm) in order of 4 layers (total thickness: 0.38 m)
m), and otherwise performed in the same manner as in Example 1.
An interlayer for laminated glass was manufactured. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 95 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 26) [Preparation of each resin film] Polyvinyl butyral resin (PVB
Resin: polymerization degree 1500, residual acetyl group content 1 mol%, butyralization degree 66 mol%) 100 parts by weight, and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.19 mm. The obtained resin film is referred to as a resin film K (0.19 mm in thickness).

Further, polyvinyl butyral resin (PVB)
Resin: polymerization degree 2500, residual acetyl group content 1 mol%, butyralization degree 66 mol%) 100 parts by weight, and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.19 mm. The obtained resin film is referred to as a resin film L (having a thickness of 0.19 mm).

[Production of Intermediate Film for Laminated Glass] The resin film K (film thickness 0.19 mm) and the resin film L (film thickness 0.19 mm)
mm), and the resin film K (film thickness 0.19 mm) /
Two layers (total film thickness of 0.38 mm) were laminated in the order of the resin film L (film thickness: 0.19 mm), and the other steps were performed in the same manner as in Example 1 to produce an interlayer film for laminated glass. When the roughness of the emboss of the obtained intermediate film was measured in the same manner as in Example 1, it was 37 μm. Further, as a result of measuring the blocking property, the adhesive strength was as low as 80 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

The results of Examples 23 to 26 are summarized in Table 5.

[0180]

[Table 5]

(Example 27) [Preparation of each resin film] Polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.32 mm. The obtained resin film is referred to as a resin film K (thickness 0.32 mm).

Further, polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 2200, residual acetyl group content 1 mol%, butyralization degree 65 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.12 mm. The obtained resin film is referred to as a resin film L (having a thickness of 0.12 mm).

[Production of Intermediate Film for Laminated Glass] The resin film K (thickness 0.32 mm) and the resin film L (thickness 0.1
2 mm), and the resin film K (thickness: 0.32 m)
m) / resin film L (thickness 0.12 mm) / resin film K (thickness 0.32 mm) in three layers (total thickness 0.76 mm) in the same manner as in Example 1 An interlayer for laminated glass was manufactured. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1, and it was 32 μm. Also, as a result of measuring the blocking property,
The adhesive strength was as low as 85 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 28) [Preparation of each resin film] Polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 5000, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll, and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.70 mm. The obtained resin film is referred to as a resin film K (0.70 mm in thickness).

Further, polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1000, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.12 mm. The obtained resin film is referred to as a resin film L (having a thickness of 0.12 mm).

[Production of Intermediate Film for Laminated Glass] The resin film K (film thickness 0.70 mm) and the resin film L (film thickness 0.12
mm), and the resin film K (film thickness 0.70 mm) /
Resin film L (film thickness 0.12 mm) / resin film K (film thickness 0.7
0 mm) in this order, and three layers (a total film thickness of 1.52 mm) were superposed, and otherwise the same as in Example 1 to produce an interlayer film for laminated glass. When the roughness of the emboss of the obtained intermediate film was measured in the same manner as in Example 1, it was 50 μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 60 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 29) [Preparation of each resin film] Polyvinyl butyral resin (PVB
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.20 mm. The obtained resin film is referred to as a resin film K (film thickness 0.20 mm).

Further, polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 500, residual acetyl group content 1 mol%, butyralization degree 65 mol%), and triethylene glycol di-2-ethylbutyrate 40 as a plasticizer
After the mixture was sufficiently melt-kneaded with a mixing roll, the mixture was press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.18 mm. The obtained resin film is referred to as a resin film L (having a thickness of 0.18 mm).

Further, a polyvinyl butyral resin (PV
B resin: polymerization degree 4000, residual acetyl group content 1 mol%,
100 parts by weight of butyralization degree) and 40 parts by weight of triethylene glycol di-2-ethyl butyrate as a plasticizer are mixed, sufficiently melt-kneaded with a mixing roll, and then pressed by a press molding machine. By molding, a resin film having an average thickness of 0.18 mm was obtained. The obtained resin film is referred to as a resin film M (having a thickness of 0.18 mm).

[Production of Intermediate Film for Laminated Glass] The above resin film K (film thickness 0.20 mm) and resin film L (film thickness 0.18
mm) and a resin film M (thickness 0.18 mm), and this is combined with a resin film K (thickness 0.20 mm) / resin film L (thickness 0.1 mm).
8 mm) / resin film M (thickness 0.18 mm) / resin film K
(Film thickness 0.20 mm) in order of 4 layers (total film thickness 0.76 m)
m), and otherwise performed in the same manner as in Example 1.
An interlayer for laminated glass was manufactured. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
μm. Further, as a result of measuring the blocking property, the adhesive strength showed a low value of 93 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Manufacture of laminated glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 30) [Preparation of each resin film] Polyvinyl butyral resin (PVB)
Resin: polymerization degree 1500, residual acetyl group content 1 mol%, butyralization degree 66 mol%) 100 parts by weight, and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.38 mm. The obtained resin film is referred to as a resin film K (thickness 0.38 mm).

Further, polyvinyl butyral resin (PVB)
Resin: polymerization degree 2500, residual acetyl group content 1 mol%, butyralization degree 66 mol%) 100 parts by weight, and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.38 mm. The obtained resin film is referred to as a resin film L (thickness 0.38 mm).

[Production of Multilayer Intermediate Film for Laminated Glass] The resin film K (thickness 0.38 mm) and the resin film L (thickness 0.
38 mm), the resin film K (thickness 0.38 mm) /
Two layers (total thickness: 0.76 mm) were superposed in the order of the resin film L (thickness: 0.38 mm), and the other steps were the same as in Example 1 to produce an interlayer film for laminated glass. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1, and it was 41 μm. Further, as a result of measuring the blocking property, the adhesive strength was as low as 80 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

Table 6 summarizes the results of Examples 27 to 30 described above.

[0199]

[Table 6]

(Example 31) [Preparation of each resin film] Polyvinyl butyral resin (PVB
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.13 mm. The obtained resin film is referred to as a resin film N (having a thickness of 0.13 mm).

Further, polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 65 mol%), and triethylene glycol di-2-ethyl butyrate 5 as a plasticizer
5 parts by weight were mixed and sufficiently melt-kneaded with a mixing roll, followed by press molding with a press molding machine to obtain a resin film having an average film thickness of 0.12 mm. The obtained resin film is referred to as a resin film O (film thickness 0.12 mm).

[Production of Intermediate Film for Laminated Glass] The resin film N (film thickness 0.13 mm) and the resin film O (film thickness 0.12 mm)
mm) and the resin film N (film thickness 0.13 mm) /
Resin film O (film thickness 0.12 mm) / resin film N (film thickness 0.1
3 mm) in this order, and three layers (total film thickness of 0.38 mm) were superposed, and otherwise the same procedure as in Example 1 was carried out to produce an interlayer film for laminated glass. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1, and it was 30 μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 84 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Manufacture of Laminated Glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 32) [Preparation of each resin film] Polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.19 mm. The obtained resin film is referred to as a resin film N (having a thickness of 0.19 mm).

In addition, polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
5 parts by weight were mixed and sufficiently melt-kneaded with a mixing roll, and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.38 mm. The obtained resin film is called a resin film O (thickness 0.38 mm).

[Production of Intermediate Film for Laminated Glass] The resin film N (film thickness 0.19 mm) and the resin film O (film thickness 0.38 mm)
mm) and the resin film N (film thickness 0.19 mm) /
Resin film O (thickness 0.38 mm) / resin film N (thickness 0.1
9 mm) in that order, and laminated in three layers (total film thickness of 0.76 mm). Otherwise, the same procedure as in Example 1 was carried out to produce an interlayer film for laminated glass. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1, and it was 39 μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 79 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Manufacture of Laminated Glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 33) [Preparation of each resin film] Polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.05 mm. The obtained resin film is referred to as a resin film N (thickness: 0.05 mm).

Further, polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 60 mol%), and triethylene glycol di-2-ethylbutyrate 7 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll, and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.14 mm. The obtained resin film is referred to as a resin film O (film thickness 0.14 mm).

Further, polyvinyl butyral resin (PV
B resin: polymerization degree 1700, residual acetyl group content 1 mol%,
100 parts by weight of butyralization degree) and 25 parts by weight of triethylene glycol di-2-ethyl butyrate as a plasticizer are mixed, sufficiently mixed and kneaded with a mixing roll, and then pressed by a press molding machine. By molding, a resin film having an average thickness of 0.14 mm was obtained. The obtained resin film is referred to as a resin film P (having a thickness of 0.14 mm).

[Production of Intermediate Film for Laminated Glass] The resin film N (film thickness 0.05 mm) and the resin film O (film thickness 0.14
mm) and a resin film P (film thickness 0.14 mm), which are formed into a resin film N (film thickness 0.05 mm) / resin film O (film thickness 0.1 mm).
4 mm) / resin film P (film thickness 0.14 mm) / resin film N
(Thickness: 0.05 mm) in order of 4 layers (total thickness: 0.38 m)
m), and otherwise performed in the same manner as in Example 1.
An interlayer for laminated glass was manufactured. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 96 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Manufacture of laminated glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 34) [Preparation of each resin film] Polyvinyl butyral resin (PVB
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 3 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.19 mm. The obtained resin film is referred to as a resin film N (having a thickness of 0.19 mm).

Further, polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 5 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.19 mm. The obtained resin film is referred to as a resin film O (having a thickness of 0.19 mm).

[Production of Intermediate Film for Laminated Glass] The resin film N (film thickness 0.19 mm) and the resin film O (film thickness 0.19 mm)
mm) and the resin film N (film thickness 0.19 mm) /
Two layers (total film thickness of 0.38 mm) were superposed in the order of the resin film O (film thickness: 0.19 mm), and the other steps were performed in the same manner as in Example 1 to produce an interlayer film for laminated glass. When the roughness of the emboss of the obtained intermediate film was measured in the same manner as in Example 1, it was 34 μm. In addition, as a result of measuring the blocking property, the adhesive strength was as low as 85 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Manufacture of Laminated Glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

Table 7 summarizes the results of Examples 31 to 34 described above.

[0218]

[Table 7]

Example 35 Preparation of Each Resin Film Polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.32 mm. The obtained resin film is referred to as a resin film N (thickness 0.32 mm).

Further, a polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
5 parts by weight were mixed and sufficiently melt-kneaded with a mixing roll, followed by press molding with a press molding machine to obtain a resin film having an average film thickness of 0.12 mm. The obtained resin film is referred to as a resin film O (film thickness 0.12 mm).

[Production of Intermediate Film for Laminated Glass] The resin film N (thickness 0.32 mm) and the resin film O (thickness 0.1
2 mm), and the resin film N (thickness 0.32 m
m) / resin film O (thickness 0.12 mm) / resin film N (thickness 0.32 mm) in the order of three layers (total thickness 0.76 mm), and otherwise the same as in Example 1. An interlayer for laminated glass was manufactured. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1, and it was 30 μm. Also, as a result of measuring the blocking property,
The adhesive strength was as low as 83 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 36) [Preparation of each resin film] Polyvinyl butyral resin (PVB
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.71 mm. The obtained resin film is referred to as a resin film N (0.71 mm in thickness).

Further, a polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1000, residual acetyl group amount 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 5 as a plasticizer
5 parts by weight were mixed and sufficiently melt-kneaded with a mixing roll, and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.10 mm. The obtained resin film is referred to as a resin film O (0.10 mm in thickness).

[Production of Intermediate Film for Laminated Glass] The resin film N (film thickness 0.71 mm) and the resin film O (film thickness 0.10 mm)
mm) and the resin film N (film thickness 0.71 mm) /
Resin film O (film thickness 0.10 mm) / resin film N (film thickness 0.7)
3 mm (total thickness: 1.52 mm) in this order, and in the same manner as in Example 1 to produce an interlayer film for laminated glass. When the roughness of the emboss of the obtained intermediate film was measured in the same manner as in Example 1, it was 49 μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 60 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

Example 37 Preparation of Each Resin Film Polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll, and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.21 mm. The obtained resin film is referred to as a resin film N (film thickness 0.21 mm).

Further, polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 60 mol%), and triethylene glycol di-2-ethylbutyrate 7 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.17 mm. The obtained resin film is referred to as a resin film O (film thickness 0.17 mm).

Further, polyvinyl butyral resin (PV
B resin: polymerization degree 1700, residual acetyl group content 1 mol%,
100 parts by weight of butyralization degree) and 25 parts by weight of triethylene glycol di-2-ethyl butyrate as a plasticizer are mixed, sufficiently mixed and kneaded with a mixing roll, and then pressed by a press molding machine. By molding, a resin film having an average thickness of 0.17 mm was obtained. The obtained resin film is referred to as a resin film P (having a thickness of 0.17 mm).

[Production of Intermediate Film for Laminated Glass] The resin film N (film thickness 0.21 mm) and the resin film O (film thickness 0.17
mm) and a resin film P (thickness 0.17 mm), which are combined with a resin film N (thickness 0.21 mm) / resin film O (thickness 0.1 mm).
7 mm) / resin film P (film thickness 0.17 mm) / resin film N
(Film thickness 0.21 mm) in order of 4 layers (total film thickness 0.76 m)
m), and otherwise performed in the same manner as in Example 1.
An interlayer for laminated glass was manufactured. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 95 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 38) [Preparation of each resin film] Polyvinyl butyral resin (PVB
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 3 as a plasticizer
5 parts by weight were mixed and sufficiently melt-kneaded with a mixing roll, and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.38 mm. The obtained resin film is referred to as a resin film N (thickness 0.38 mm).

Further, polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
5 parts by weight were mixed and sufficiently melt-kneaded with a mixing roll, and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.38 mm. The obtained resin film is called a resin film O (thickness 0.38 mm).

[Production of multilayer interlayer film for laminated glass] The above-mentioned resin film N (thickness 0.38 mm) and resin film O (thickness 0.
38 mm), the resin film N (thickness 0.38 mm) /
Two layers (total thickness: 0.76 mm) were superposed in the order of the resin film O (thickness: 0.38 mm), and the other steps were the same as in Example 1 to produce an interlayer film for laminated glass. When the roughness of the emboss of the obtained intermediate film was measured in the same manner as in Example 1, it was 40 μm. Further, as a result of measuring the blocking property, the adhesive strength was as low as 80 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

Table 8 summarizes the results of Examples 35 to 38 described above.

[0237]

[Table 8]

(Example 39) [Preparation of each resin film] Polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 65 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.13 mm. The obtained resin film is referred to as a resin film Q (0.13 mm in thickness).

Also, 100 parts by weight of a vinyl chloride resin (PVC resin: vinyl chloride-ethylene-glycidyl methacrylate copolymer) and 40 parts by weight of di-2-ethylhexyl phthalate as a plasticizer were mixed and mixed. After sufficiently melt-kneading, a press molding machine was used to perform press molding to obtain a resin film having an average film thickness of 0.12 mm. The obtained resin film is referred to as a resin film R (having a thickness of 0.12 mm).

[Production of Intermediate Film for Laminated Glass] The resin film Q (film thickness 0.13 mm) and the resin film R (film thickness 0.12 mm)
mm), and the resin film Q (film thickness 0.13 mm) /
Resin film R (film thickness 0.12 mm) / resin film Q (film thickness 0.1
3 mm) in this order, and three layers (total film thickness of 0.38 mm) were superposed, and otherwise the same procedure as in Example 1 was carried out to produce an interlayer film for laminated glass. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1, and it was 30 μm. In addition, as a result of measuring the blocking property, the adhesive strength was as low as 85 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 40) [Preparation of each resin film] Polyvinyl butyral resin (PVB
Resin: polymerization degree 4500, residual acetyl group content 28 mol%,
100 parts by weight of butyralization degree) and 40 parts by weight of triethylene glycol di-2-ethylbutyrate as a plasticizer are mixed, sufficiently mixed and kneaded with a mixing roll, and then pressed by a press molding machine. By molding, a resin film having an average film thickness of 0.19 mm was obtained. The obtained resin film is referred to as a resin film Q (0.19 mm in thickness).

In Example 39, the average thickness of the resin film R (thickness: 0.12 mm) was changed to 0.38 mm to prepare a resin film R (thickness: 0.38 mm).

[Production of Intermediate Film for Laminated Glass] The resin film Q (film thickness 0.19 mm) and the resin film R (film thickness 0.38 mm)
mm), and the resin film Q (film thickness 0.19 mm) /
Resin film R (thickness 0.38 mm) / resin film Q (thickness 0.1
9 mm) in that order, and laminated in three layers (total film thickness of 0.76 mm). Otherwise, the same procedure as in Example 1 was carried out to produce an interlayer film for laminated glass. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1, and it was 39 μm. Further, as a result of measuring the blocking property, the adhesive strength was as low as 80 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 41) [Preparation of each resin film] Polyvinyl butyral resin (PVB
Resin: 100 parts by weight of polymerization degree 700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethylbutyrate 40 as a plasticizer
After the mixture was sufficiently melt-kneaded with a mixing roll, the mixture was press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.05 mm. The obtained resin film is referred to as a resin film Q (thickness: 0.05 mm).

Further, a polyurethane resin (PU resin: 4,
100 parts by weight of a copolymer of 4-diisocyanate dicyclohexylmethane and polytetramethylene glycol) was sufficiently melt-kneaded with a mixing roll and then press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.12 mm. . The obtained resin film is referred to as a resin film S (0.12 mm in thickness).

[Production of Intermediate Film for Laminated Glass] The resin film Q (thickness: 0.05 mm) and the resin film S (thickness: 0.12)
mm), and the resin film Q (film thickness 0.05 mm) /
Resin film S (film thickness 0.12 mm) / resin film Q (film thickness 0.0
5 mm) / resin film S (0.12 mm thickness) / resin film Q
(Thickness: 0.05 mm) in order of 5 layers (total thickness: 0.39 m)
m), and otherwise performed in the same manner as in Example 1.
An interlayer for laminated glass was manufactured. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 96 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Manufacture of Laminated Glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

Example 42 Preparation of Each Resin Film Polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 2500, residual acetyl group content 1 mol%, butyralization degree 60 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average film thickness of 0.10 mm. The obtained resin film is referred to as a resin film Q (0.10 mm in thickness).

Also, in Example 39, the average thickness of the resin film R (0.12 mm) was changed to 0.09 mm to prepare a resin film R (0.09 mm in thickness). Further, in Example 41, the average film thickness of the resin film S (the film thickness of 0.12 mm) was changed to 0.09 mm to change the resin film S (the film thickness of 0.02 mm).
9 mm).

[Production of Intermediate Film for Laminated Glass] The resin film Q (film thickness 0.10 mm) and the resin film R (film thickness 0.09
mm) and a resin film S (thickness 0.09 mm), which are combined with a resin film Q (thickness 0.10 mm) / resin film R (thickness 0.02 mm).
9 mm) / resin film S (thickness 0.09 mm) / resin film Q
(Film thickness 0.10 mm) in order of 4 layers (total film thickness 0.38 m)
m), and otherwise performed in the same manner as in Example 1.
An interlayer for laminated glass was manufactured. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 89 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

Table 9 summarizes the results of Examples 39 to 42 described above.

[0255]

[Table 9]

Example 43 Preparation of Resin Film Polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 65 mol%), and triethylene glycol di-2-ethyl butyrate 4 as a plasticizer
After mixing with a mixing roll, the mixture was sufficiently melt-kneaded with a mixing roll and then press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.32 mm. The obtained resin film is referred to as a resin film Q (thickness 0.32 mm).

The resin film B prepared in Example 1
Was prepared as a resin film R (film thickness 0.12 mm).

[Production of Intermediate Film for Laminated Glass] The resin film Q (thickness 0.32 mm) and the resin film R (thickness 0.12)
mm) and the resin film Q (thickness 0.32 mm)
/ Resin film R (film thickness 0.12 mm) / resin film Q (film thickness 0.
32 mm) in this order, and three layers (total film thickness of 0.76 mm) were superposed, and otherwise the same as in Example 1 to produce an interlayer film for laminated glass. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1, and it was 32 μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 84 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Manufacture of Laminated Glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

Example 44 Preparation of Resin Film Polyvinyl butyral resin (PVB)
Resin: polymerization degree 4500, residual acetyl group content 28 mol%,
100 parts by weight of butyralization degree) and 40 parts by weight of triethylene glycol di-2-ethyl butyrate as a plasticizer are mixed, sufficiently melted and kneaded with a mixing roll, and then pressed by a press molding machine. By molding, a resin film having an average film thickness of 0.71 mm was obtained. The obtained resin film is referred to as a resin film Q (0.71 mm in thickness).

In Example 1, the average thickness of the resin film R (0.12 mm in thickness) was changed to 0.10 mm to prepare a resin film R (0.10 mm in thickness).

[Production of Intermediate Film for Laminated Glass] The resin film Q (thickness 0.71 mm) and the resin film R (thickness 0.10 mm)
mm), and the resin film Q (film thickness 0.71 mm) /
Resin film R (film thickness 0.10 mm) / resin film Q (film thickness 0.7
3 mm (total thickness: 1.52 mm) in this order, and in the same manner as in Example 1 to produce an interlayer film for laminated glass. When the roughness of the emboss of the obtained intermediate film was measured in the same manner as in Example 1, it was 49 μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 64 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Manufacture of laminated glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

Example 45 Preparation of Resin Film Polyvinyl butyral resin (PVB)
Resin: 100 parts by weight of polymerization degree 700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), and triethylene glycol di-2-ethylbutyrate 40 as a plasticizer
After the mixture was sufficiently melt-kneaded with a mixing roll, the mixture was press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.21 mm. The obtained resin film is referred to as a resin film Q (0.21 mm in thickness).

Further, a polyurethane resin (PU resin: 4,
100 parts by weight of a copolymer of 4-diisocyanate dicyclohexylmethane and polytetramethylene glycol) was sufficiently melt-kneaded with a mixing roll, and then press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.07 mm. . The obtained resin film is referred to as a resin film S (film thickness 0.07 mm).

[Production of Intermediate Film for Laminated Glass] The resin film Q (film thickness 0.21 mm) and the resin film S (film thickness 0.07
mm) and the resin film Q (film thickness 0.21 mm) /
Resin film S (film thickness 0.07 mm) / resin film Q (film thickness 0.2
1 mm) / resin film S (thickness 0.17 mm) / resin film Q
(Film thickness 0.21 mm) in order of 5 layers (total film thickness 0.77 m)
m), and otherwise performed in the same manner as in Example 1.
An interlayer for laminated glass was manufactured. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 95 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Manufacture of Laminated Glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 46) [Preparation of each resin film] Polyvinyl butyral resin (PVB)
Resin: polymerization degree 2500, residual acetyl group content 12 mol%,
100 parts by weight of butyralization degree) and 40 parts by weight of triethylene glycol di-2-ethyl butyrate as a plasticizer are mixed, sufficiently melt-kneaded with a mixing roll, and then pressed by a press molding machine. By molding, a resin film having an average thickness of 0.30 mm was obtained. The obtained resin film is referred to as a resin film Q (thickness 0.30 mm).

Further, in Example 43, the average thickness of the resin film R (0.12 mm in thickness) was changed to 0.08 mm to prepare a resin film R (0.08 mm in thickness). Furthermore, in Example 45, the average thickness of the resin film S (0.12 mm in thickness) was changed to 0.08 mm, and the resin film S (0.08 m in thickness) was changed.
m) was prepared.

[Production of Multilayer Intermediate Film for Laminated Glass] The above resin film Q (thickness 0.30 mm) and resin film R (thickness 0.3 mm).
08 mm) and a resin film S (thickness 0.08 mm), which are formed into a resin film Q (thickness 0.30 mm) / resin film R (thickness 0.08 mm) / resin film S (thickness 0.08 mm). / 4 layers in order of resin film Q (thickness 0.30 mm) (total thickness 0.7
6 mm), and the other steps were performed in the same manner as in Example 1 to produce an interlayer film for laminated glass. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
It was 28 μm. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 90 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Manufacture of laminated glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

The results of Examples 43 to 46 are shown in Table 10 below.
Are shown together.

[0273]

[Table 10]

(Example 47) [Preparation of each resin film] Polyvinyl alcohol was reacted with n-hexyl aldehyde to obtain core particles.
A modified polyvinyl butyral resin (modified PVB resin: polymerization degree 1700, polymerization degree 1700, residual acetyl group amount) in which an outer shell layer acetalized with n-butyraldehyde is formed on the surface layer around the core particles by reacting butyraldehyde. (1 mol%) 100 parts by weight and triethylene glycol di-2-ethyl butyrate 40 parts by weight as a plasticizer were mixed and sufficiently melt-kneaded with a mixing roll, followed by press molding with a press molding machine. Average thickness 0.12m
m was obtained. The obtained resin film is referred to as a resin film T (film thickness 0.12 mm). The glass transition temperature of this resin film T was 7 ° C.

Polyvinyl butyral resin (PVB resin:
(Polymerization degree 1700, residual acetyl group content 1 mol%, butyralization degree 66 mol%), 100 parts by weight, and 40 parts by weight of triethylene glycol di-2-ethylbutyrate as a plasticizer were mixed and mixed with a mixing roll. After sufficient melting and kneading, the mixture was press-formed by a press-forming machine to obtain an average film thickness of 0.
A 13 mm resin film was obtained. The obtained resin film is coated with resin film U.
(Film thickness 0.13 mm).

[Production of Intermediate Film for Laminated Glass] The resin film T (having a thickness of 0.12 mm) and the resin film U (having a thickness of 0.1
3 mm) and the resin film U (thickness: 0.13 m)
m) / resin film T (thickness 0.12 mm) / resin film U (thickness 0.13 mm) in order of three layers (total thickness 0.38 mm)
Then, an interlayer film for laminated glass was manufactured in the same manner as in Example 1 except for the above. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
Met. In addition, as a result of measuring the blocking property, the adhesive strength was as low as 85 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Manufacture of Laminated Glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 48) [Preparation of each resin film] A polybutyl acrylate resin was sufficiently melt-kneaded with a mixing roll, and then press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.19 mm. Was. The obtained resin film is referred to as a resin film T (having a thickness of 0.19 mm).
The glass transition temperature of this resin film T was 13 ° C.

Also, in Example 47, the average thickness of the resin film U (0.13 mm in thickness) was changed to 0.19 mm to prepare a resin film U (0.19 mm in thickness).

[Production of Intermediate Film for Laminated Glass] The resin film T (film thickness 0.19 mm) and the resin film U (film thickness 0.19 mm)
mm), and the resin film T (film thickness 0.19 mm) /
An interlayer film for laminated glass was manufactured in the same manner as in Example 1 except that two layers (a total film thickness of 0.38 mm) were overlaid in the order of the resin film U (film thickness 0.19 mm). When the roughness of the emboss of the obtained intermediate film was measured in the same manner as in Example 1, it was 37 μm. Further, as a result of measuring the blocking property, the adhesive strength was as low as 80 g / cm. That is, it was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 49) [Preparation of each resin film] A polymethyl acrylate resin was sufficiently melt-kneaded with a mixing roll, and then press-molded with a press molding machine to obtain a resin film having an average film thickness of 0.26 mm. Was. The obtained resin film is referred to as a resin film T (film thickness 0.26 mm).
The glass transition temperature of this resin film T was 3 ° C.

Further, in Example 47, the average thickness of the resin film U (0.13 mm in thickness) was changed to 0.06 mm to prepare a resin film U (0.06 mm in thickness).

[Production of Intermediate Film for Laminated Glass] The resin film T (film thickness 0.26 mm) and the resin film U (film thickness 0.0
6 mm), and the resin film U (thickness: 0.06 m
m) / resin film T (thickness 0.26 mm) / resin film U (thickness 0.06 mm) in order of three layers (total thickness 0.38 mm)
Then, an interlayer film for laminated glass was manufactured in the same manner as in Example 1 except for the above. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
Met. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 95 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Manufacture of laminated glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 50) [Preparation of each resin film] Ethylene-vinyl acetate copolymer resin (EVA resin) was sufficiently melt-kneaded with a mixing roll, and then press-molded with a press molding machine to obtain an average film thickness of 0%. .10
mm was obtained. The obtained resin film is called a resin film T (film thickness 0.10 mm). The glass transition temperature of this resin film T was −18 ° C.

Also, 100 parts by weight of a vinyl chloride resin (PVC resin: vinyl chloride-ethylene-glycidyl methacrylate copolymer) and 40 parts by weight of di-2-ethylhexyl phthalate as a plasticizer were mixed and mixed. After sufficiently melt-kneading in step (1), press molding was performed with a press molding machine to obtain a resin film having an average film thickness of 0.14 mm. The obtained resin film is referred to as a resin film U (0.14 mm in thickness).

[Production of Intermediate Film for Laminated Glass] The resin film T (film thickness 0.10 mm) and the resin film U (film thickness 0.1 mm)
4 mm) and the resin film U (film thickness 0.14 m
m) / resin film T (thickness 0.10 mm) / resin film U (thickness 0.14 mm) in order of three layers (total thickness 0.38 mm)
Then, an interlayer film for laminated glass was manufactured in the same manner as in Example 1 except for the above. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
Met. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 89 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Manufacture of laminated glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

Table 11 shows the results of Examples 47 to 50.
Are shown together.

[0291]

[Table 11]

(Example 51) [Preparation of each resin film] In Example 47, the resin film T (thickness: 0.12 mm) was used as it was. Also, the resin film U
The resin film U (thickness 0.32 mm) was prepared by changing the average thickness (thickness 0.13 mm) to 0.32 mm.

[Production of Intermediate Film for Laminated Glass] The resin film T (film thickness 0.12 mm) and the resin film U (film thickness 0.3
2 mm), and the resin film U (thickness: 0.32 m
m) / resin film T (thickness 0.12 mm) / resin film U (thickness 0.32 mm) in three layers (total thickness 0.76 mm)
Then, an interlayer film for laminated glass was manufactured in the same manner as in Example 1 except for the above. When the roughness of the emboss of the obtained intermediate film was measured in the same manner as in Example 1, it was 33 μm.
Met. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 84 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Manufacture of Laminated Glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 52) [Preparation of each resin film] In Example 48, the average thickness of the resin film T (thickness 0.19 mm) was changed to 0.12 mm, and the resin film T (thickness 0.1 mm) was changed. 12 mm). Further, the average thickness of the resin film U (0.19 mm in thickness) was changed to 0.70 mm to prepare a resin film U (0.70 mm in thickness).

[Production of Intermediate Film for Laminated Glass] The resin film T (having a thickness of 0.12 mm) and the resin film U (having a thickness of 0.7
0 mm), and the resin film U (thickness 0.70 m
m) / resin film T (film thickness 0.12 mm) / resin film U (film thickness 0.70 mm) in this order: three layers (total film thickness 1.52 mm)
Then, an interlayer film for laminated glass was manufactured in the same manner as in Example 1 except for the above. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
Met. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 68 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Manufacture of Laminated Glass] A laminated glass was manufactured in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 53) [Preparation of each resin film] In Example 49, the average thickness of the resin film T (0.26 mm in thickness) was changed to 0.34 mm, and the resin film T (thickness of 0.2 mm) was changed. 34 mm). Further, the average thickness of the resin film U (thickness 0.06 mm) was changed to 0.21 mm to prepare the resin film U (thickness 0.21 mm).

[Production of Intermediate Film for Laminated Glass] The resin film T (thickness 0.34 mm) and the resin film U (thickness 0.2
1 mm) and the resin film U (film thickness 0.21 m
m) / resin film T (thickness 0.34 mm) / resin film U (thickness 0.21 mm) in order of three layers (total thickness 0.76 mm)
Then, an interlayer film for laminated glass was manufactured in the same manner as in Example 1 except for the above. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
Met. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 95 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

(Example 54) [Preparation of each resin film] In Example 50, the resin film T (film thickness 0.10 mm) was used as it was. Also, the resin film U
The resin film U (thickness 0.33 mm) was prepared by changing the average thickness (thickness 0.14 mm) to 0.33 mm.

[Production of Intermediate Film for Laminated Glass] The resin film T (film thickness 0.10 mm) and the resin film U (film thickness 0.3
3 mm), and the resin film U (thickness: 0.33 m
m) / resin film T (thickness 0.10 mm) / resin film U (thickness 0.33 mm) in order of three layers (total thickness 0.76 mm)
Then, an interlayer film for laminated glass was manufactured in the same manner as in Example 1 except for the above. The emboss roughness of the obtained intermediate film was measured in the same manner as in Example 1.
Met. In addition, as a result of measuring the blocking property, the adhesive strength showed a low value of 79 g / cm. That is,
It was found that the blocking resistance was good and the workability was excellent.

[Production of Laminated Glass] A laminated glass was produced in the same manner as in Example 1. The obtained laminated glass was evaluated for degassing properties and optical distortion. As a result, the laminated glass was excellent in degassing properties, and did not cause optical distortion, and both were good.

The results of Examples 51 to 54 are shown in Table 12
Are shown together.

[0305]

[Table 12]

[0306]

As described above, according to the interlayer film for laminated glass of the present invention, the interface between the resin film layers in the laminating step is uniform without being disturbed. Therefore, when a laminated glass is manufactured using this intermediate film, generation of optical distortion can be prevented. In addition, blocking between the intermediate films can be prevented, and good results can be obtained in terms of workability and deaeration.

Claims (9)

(57) [Claims] 1. An outermost resin film having a thickness of not less than 45 μm and not more than 200 μm.
An interlayer film for laminated glass comprising a multilayer resin film having a thickness of less than μm, wherein at least one surface of the interlayer film has a roughness of 20 μm.
An interlayer film for laminated glass, wherein a fine emboss of 40 μm is formed. 2. The outermost resin film has a thickness of not less than 200 μm and not more than 72 μm.
An interlayer for laminated glass comprising a multilayer resin film having a thickness of 0 μm or less, wherein at least one surface of the interlayer has a roughness of 2 μm.
An interlayer for laminated glass, wherein a fine emboss of 0 to 50 μm is formed. 3. The multilayer resin film, wherein at least one resin film (A) comprising a polyvinyl acetal resin (a) having 6 to 10 carbon atoms of an acetal group and a plasticizer; The interlayer film for laminated glass according to claim 1 or 2, wherein a polyvinyl acetal resin (b) of 3 to 4 and at least one resin film (B) made of a plasticizer are laminated. . 4. The multilayer resin film according to claim 1, wherein the number of carbon atoms of the acetal group is 4 to 6, and the average of the molar fraction of the amount of ethylene groups to which the acetyl group is bonded is based on the total amount of ethylene groups in the main chain. At least one resin film (C) comprising a polyvinyl acetal resin (c) having a value of 8 to 30 mol% and a plasticizer, wherein the acetal group has 3 to 4 carbon atoms and an acetyl group is bonded. At least one resin film (D) comprising a polyvinyl acetal resin (d) having an average molar fraction of 4 mol% or less with respect to the total ethylene group content of the main chain and the plasticizer. The interlayer film for laminated glass according to claim 1 or 2, wherein the interlayer film is laminated. 5. The multilayer resin film is formed by laminating at least two plasticized polyvinyl butyral resin films, and the difference in the average degree of polymerization of the polyvinyl butyral resin used for each adjacent resin film is 300 or more and 4500 or less. The interlayer film for laminated glass according to any one of claims 1 to 4, wherein: 6. The multilayer resin film is formed by laminating at least two plasticized polyvinyl butyral resin films, and the difference in plasticizer content between adjacent resin films is 100 parts by weight of each resin constituting each film. The interlayer film for laminated glass according to any one of claims 1 to 5, wherein the content is 5 parts by weight or more and 50 parts by weight or less based on the total weight of the interlayer film. 7. The intermediate for laminated glass according to claim 1, wherein the multilayer resin film is formed by laminating a plasticized polyvinyl butyral resin film at least on an outermost resin film. film. 8. The multilayer resin film has a glass transition temperature of 1
The interlayer film for laminated glass according to claim 1, wherein at least one of a resin film having a temperature of 5 ° C. or lower is laminated. 9. A laminated glass comprising the interlayer film for laminated glass according to any one of claims 1 to 8 sandwiched between two glass plates.