JP2005193563A - Manufacturing method of window sheet body with frame material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a window sheet body with a frame material characterized in that the sufficient adhesive strength of a window sheet body and the frame material is obtained and the dimensional precision of the frame material is not lowered. <P>SOLUTION: The manufacturing method of the window sheet body with the frame material includes a process for forming the frame material 10 composed of a frame material main body 10a comprising a thermoplastic elastomer and an adhesiveness imparting layer 10b comprising a thermoplastic elastomer having adhesiveness, a process for coating the surface of the adhesiveness imparting layer 10b with a primer 20, a process for preheating the window sheet body 30 and a process for bringing the window sheet body 30 and the frame material 10 into contact with each other under pressure to bond them in a state the temperature of the heated window sheet body 30 is set so as to be capable of being bonded to the frame material 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method for manufacturing a window-like body with a frame material, which is preferably used for, for example, an automobile window.

  A frame material (mall) made of resin or rubber is integrated with a glass plate for windows of an automobile or the like, which is an example of a plate for a window. This frame material has a function of interposing between the glass plate and the vehicle body to seal between the glass plate and the vehicle body, and also has a function such as decoration as necessary.

  As the frame material, polyvinyl chloride resin has been used mainly because it has excellent scratch resistance and moldability. However, from the viewpoint of environmental protection and recyclability in recent years, olefin-based thermoplastic elastomers are an alternative material. It has been proposed to use (TPO). TPO is a type of thermoplastic elastomer (TPE) that does not contain chlorine, exhibits thermoplasticity at molding temperatures, exhibits rubber elasticity at operating temperatures, and does not require cross-linking like vulcanized rubber and can be reused. It is also excellent in recyclability.

  On the other hand, as a method of integrating the frame material into the window plate, after the frame material is formed in advance, the window plate and frame material are combined with heating and pressurizing via an adhesive or primer. A technique for joining the two has been proposed.

  For example, in Patent Document 1 below, a gasket (frame material) is molded separately from a panel (plate-like body), and an undercoat coating is applied to the surface on at least one of the panel or gasket, A method of integrating a panel and a gasket by placing the panel on a gasket and pressing it in a mold is disclosed.

In Patent Document 2 below, a pre-formed gasket is placed in a support mold so as to adhere to the panel, and the panel surface and the gasket surface are primed with an adhesive reaction product, and the panel is in contact with the gasket. Thus, a method of joining by heating the contact boundary between the panel and the gasket is disclosed.
JP-A-6-297939 JP-A-6-297940

  When a thermoplastic elastomer such as TPO is used as a frame material, since it is a normal thermoplastic elastomer, especially TPO is a resin material with a low polarity, it has poor direct adhesion to the glass surface. For this reason, as a method of integrating the frame material into the window plate, after the frame material is previously formed, the window plate and frame material are combined with heating and pressurizing via an adhesive. It is effective to join.

  However, in the method disclosed in Japanese Patent Application Laid-Open No. 6-297939, the panel is pressed in a state where the gasket is disposed in the mold, and the gasket is heated by the residual heat due to molding. Also in the method disclosed in Japanese Patent Laid-Open No. 6-297940, the contact boundary between the panel and the gasket is heated, so that the gasket is inevitably heated.

  As described above, in the above-described conventional techniques, the joining is performed in a state where the frame member is heated. For this reason, there is a problem that uneven heating tends to occur due to the shape of the frame material, etc., and this causes uneven adhesion even on the joint surface with the window plate. In addition, since the frame material itself is heated, there is also a problem that the frame material is easily deformed by heat and the dimensional accuracy of the frame material is likely to be lowered.

  In particular, a frame material made of a thermoplastic elastomer such as TPO is easily softened at a high temperature. Therefore, it is important to prevent the above-described adhesion unevenness and deterioration of dimensional accuracy.

  In addition, it is conceivable to heat only the joint surface of the frame material before bringing the frame material into contact with the window frame. In that case, however, heating non-uniformity occurs due to heating with hot air or infrared rays. Uneven adhesion occurs.

  The present invention has been made in view of the above-described problems of the prior art, and can provide a window plate with a frame material that can provide a sufficient adhesive strength between the plate member for a window and the frame material and does not deteriorate the dimensional accuracy of the frame material. It is an object of the present invention to provide a method for producing a shaped body.

In order to achieve the above object, a method for producing a window plate with a frame material according to the present invention includes a window plate with a frame material obtained by joining a pre-molded resin frame material to a window plate body. A method for producing a body,
A step of forming a frame material body made of a thermoplastic elastomer, and an adhesion-imparting layer made of a thermoplastic elastomer to which adhesion is imparted are formed on the surface of the frame material body on the side facing the plate member for windows. A frame material forming step comprising the steps of:
A primer application step of applying a primer to the surface of the adhesion-imparting layer on the side facing the window plate,
A heating step of preheating the window plate;
While the temperature of the heated window plate is in a temperature state that enables adhesion to the frame member, a pressure contact step of pressing and bonding the window plate member and the frame member; It is characterized by including.

  According to the manufacturing method of the present invention, the adhesion imparting layer made of a thermoplastic elastomer and the primer are sequentially formed on the surface of the frame material body, so that the preliminarily heated window plate is simply pressed against the frame material, The primer and the adhesion-imparting layer are firmly bonded to each other by the heating effect and pressurization by heat transfer from the window plate.

  Therefore, even a frame material made of a thermoplastic elastomer that tends to soften at high temperatures can be bonded to a window plate without heating the frame material, thereby preventing uneven bonding on the bonding surface and stable bonding. Can be obtained. Further, since the frame material is not heated, it is possible to prevent a reduction in the dimensional accuracy of the frame material. Furthermore, since no heating equipment for the frame material is required, it can be manufactured at low cost.

  In addition, the primer is usually formed on the surface of a window plate such as glass as a primer for improving adhesion, but by pre-forming it on the frame material side that is not heated, It is possible to prevent the primer from reacting by heating before the pressure welding step.

  In the present invention, it is preferable that no adhesive or primer is applied to the surface of the window plate-like body facing the frame member. When an adhesive or primer is also applied to the surface of the window plate that faces the frame material, the adhesive or primer applied to the window plate surface in the heating process of the window plate is pressed. Since it reacts before a process, interface peeling with the primer by the side of a frame material arises, and adhesive strength falls. Therefore, sufficient adhesive strength between the window plate-like body surface and the frame material can be obtained by directly contacting the frame material without applying an adhesive or primer to the surface of the window plate-like body.

  In the present invention, in the frame material forming step, it is preferable that the step of forming the frame material main body and the step of forming the adhesion-imparting layer are performed by coextrusion molding or co-injection molding. According to this, a multilayer frame material can be manufactured efficiently. Moreover, since both the frame material body and the adhesion-imparting layer are thermoplastic elastomers, they have excellent adhesion at the extrusion interface.

  Furthermore, in the present invention, the primer is preferably a urethane glass adhesion primer containing a silane coupling agent. According to this, by using a urethane primer, the primer and the adhesion-imparting layer are sufficiently bonded. Moreover, sufficient adhesive strength with the glass side can be acquired by containing a silane coupling agent especially when the plate for windows is inorganic glass.

  Moreover, in this invention, it is preferable to perform the said heating process so that the said plate for windows may become 120-200 degreeC. By performing the heating step in the above temperature range, sufficient adhesion strength between the frame material and the window plate can be obtained while preventing unnecessary heating of the frame material.

  Furthermore, in this invention, it is preferable to perform the said press-contacting process at the pressure of 0.3-1 Mpa, and the press-contacting time for 2 to 15 seconds. Since sufficient adhesive strength can be obtained even in a short time by performing the pressure welding process under the above-mentioned pressure conditions, it is possible to shorten the joining time and improve the production efficiency.

  According to the manufacturing method of the present invention, there is no uneven adhesion between the frame member and the window plate member, a stable adhesive strength can be obtained, and the window plate member with the frame member having excellent dimensional accuracy of the frame member is obtained. Can be provided.

  Hereinafter, the manufacturing method of the plate for windows with a frame material of the present invention is explained using a drawing. FIG. 1 is a schematic process diagram showing an embodiment of the manufacturing method of the present invention, where (a) a frame material is molded, (b) a primer is applied to the frame material, and (c) a frame material. Sectional drawing which shows the state which has arrange | positioned the plate-shaped body for windows joined to (d) the state which pressed the frame material and the plate-shaped body for windows is shown.

  First, a frame material 10 as shown in FIG. Here, the frame material is, for example, a resin member for sealing between a window plate such as a glass plate and a vehicle body, and other names such as molding, molding, gasket, etc. It is a called member.

  In the present invention, the frame material 10 is provided with adhesiveness to the bonding surface between the step of forming the frame material body 10a made of thermoplastic elastomer and at least the window plate on the surface of the frame material body. And a step of forming an adhesion-imparting layer 10b made of a thermoplastic elastomer.

  As a molding method, a conventionally known resin molding method such as injection molding or extrusion molding can be used. However, since both the frame body 10a and the adhesion-imparting layer 10b are thermoplastic elastomer materials, co-extrusion molding or co-injection is possible. The frame material 10 is preferably formed into a multilayer by molding.

  The thermoplastic elastomer of the frame body 10a is not particularly limited, and olefinic, styrene-based, urethane-based, ester-based, polyamide-based, vinyl chloride-based, etc. are used, among which olefin-based thermoplastic elastomer (TPO). Is preferably used.

  Examples of the hard phase (hard segment) of TPO include polypropylene or polyethylene, and examples of the soft phase (soft segment) include EPRM (ethylene-propylene rubber) or EPDM (ethylene-propylene-ethylidene norbornene ternary copolymer). It is done. Of these, TPO having a hard segment of polypropylene and a soft segment of EPDM is more preferable.

  As the thermoplastic elastomer imparted with adhesiveness used as the adhesion imparting layer 10b, for example, a modified type thermoplastic elastomer having a polar group or the like introduced by grafting or the like may be used, and polyurethane is used as the thermoplastic elastomer. A blend type thermoplastic elastomer containing a silane coupling agent in a thermoplastic elastomer may be used.

  As the thermoplastic elastomer to which such adhesiveness is imparted, for example, those commercially available as Santoprene X8291-85TL (manufactured by Advanced Elastomer Systems) can be used.

  The thickness of the adhesion imparting layer 10b is preferably 0.05 to 1.0 mm. Sufficient adhesive force can be obtained by setting the thickness to 0.05 mm or more, and material destruction of the adhesion-imparting layer 10b can be prevented by setting the thickness to 1.0 mm or less.

  The shape of the frame member 10 can be appropriately determined according to required performance, design specifications, and the like. For example, it may have the same cross-sectional shape over the entire periphery of the peripheral edge of the window frame or may have a different cross-sectional shape depending on the part. Further, the shape may be integrated over the entire periphery of the peripheral edge of the window frame, or may be integrated only on a specific side or part of the window frame.

  Next, as shown in FIG. 1 (b), a primer application step of applying the primer 20 to the surface of the frame body 10 on the side facing the window plate 30 is performed.

  As the window plate 30, a conventionally known window glass plate or the like is preferably used. The glass plate is subjected to various surface treatments such as an inorganic single plate glass plate, laminated glass in which a plurality of glass plates are laminated via an intermediate film, tempered glass that has been tempered, and heat ray shielding coating. Various glass plates such as a glass plate can be used, and a sintered body of a dark ceramic paste may be formed. Further, the window plate 30 is not limited to inorganic glass, and a resin plate made of a material such as polycarbonate resin or acrylic resin can also be used. Further, the window plate 30 is not necessarily transparent.

  The primer 20 is not particularly limited, but it is preferable to use a urethane-based glass adhesion primer containing a silane coupling agent. Thereby, sufficient adhesive strength between the window plate 30 and the adhesion-imparting layer 10b is obtained.

  The urethane compound and silane coupling agent contained in the primer are used after diluted in a solvent. Examples of the solvent include aromatic hydrocarbons such as toluene and xylene, alicyclic hydrocarbons such as cyclohexane and methylcyclohexane, esters such as impropyl acetate and butyl acetate, and ketones such as methyl ethyl ketone and methyl isobutyl ketone. .

  Examples of the primer containing a urethane compound and a silane coupling agent as described above are commercially available as glass primer # 435-41 manufactured by Sunstar Giken, BETAPRIME5001, BETASEAL 43520A manufactured by Dow Automotive, and the like. Things can be used.

  Moreover, you may mix | blend another component with a primer in the range which does not impair the objective of this invention other than a urethane compound, a silane coupling agent, and a solvent. Examples of other components include antioxidants, ultraviolet absorbers, light stabilizers, antiblocking agents, carbon black, and other various additives that are added as necessary.

The primer 20 can be formed by a conventionally known coating method. The primer coating amount is preferably 10 to 50 g / m ^{2 in} terms of resin solid content. If it is less than 10 g / m ² , the adhesive force is insufficient, which is not preferable. If it exceeds 50 g / m ² , the primer layer itself becomes too thick at the time of curing, so the primer layer itself may cause material destruction. It is not preferable.

  Next, as shown in FIG. 1 (c), the frame member 10 is fixed on the receiving jig 15 so that the primer 20 becomes a joint surface with the window plate 30, and the window plate 30. However, it arrange | positions so that the primer 20 of the frame material 10 may be opposed. For example, a metal jig or the like can be used as the jig 15 and is not particularly limited.

  Here, in this invention, the heating process which heats only the plate-shaped object 30 for windows in this state is performed. That is, the present invention is characterized in that only the window plate 30 is heated and the frame member 10 is not heated.

  The window plate 30 is preferably heated to 120 to 200 ° C, more preferably 125 to 140 ° C. If the heating is less than 120 ° C., the adhesiveness becomes insufficient, which is not preferable, and if it exceeds 200 ° C., the energy required for the heating is excessive and uneconomical. As a heating means of the plate member 30 for windows, conventionally well-known heating means, such as a heater and infrared rays, can be used, and it is not specifically limited.

  Finally, as shown in FIG. 1 (d), a joining step for press-contacting the frame member 10 and the window plate 30 is performed. Thereby, the primer 20 and the plate member 30 for windows adhere | attach, and the frame material 10 and the plate member 30 for windows are integrated. Further, at this time, the bonding strength between the primer 20 and the adhesion-imparting layer 10b is further strengthened by the heating effect and the pressurization by heat transfer from the window plate 30. Thereafter, by removing from the receiving jig 15, it is possible to obtain a window-like body with a frame material.

  This press-contacting process is performed while the temperature of the heated window plate 30 is in a temperature state that allows adhesion to the frame member 10. Specifically, it is preferable to carry out so that the temperature of the window plate 30 during the pressure welding step is 125 to 140 ° C. Moreover, it is preferable to perform the conditions in a press-contacting process at the pressure of 0.3-1 Mpa and the press-contacting time of 2-15 seconds.

  Since the frame material main body 10a and the adhesion-imparting layer 10b are both made of a thermoplastic elastomer material, the window plate with frame material obtained by the above manufacturing method can obtain sufficient adhesive strength. Further, by forming the primer 20 on the adhesion-imparting layer 10 b of the frame member 10, sufficient adhesion strength can be obtained for both the adhesion-imparting layer 10 b and the primer 20. As described above, the adhesive strength between the primer 20 and the adhesion-imparting layer 10b is further strengthened by the heating effect and pressurization by heat transfer from the window plate 30. Furthermore, sufficient adhesive strength is obtained for both the primer 20 and the window plate 30 by pressing the preheated window plate 30 with the frame member 10.

  Therefore, according to this manufacturing method, the frame material 10 made of thermoplastic elastomer and the window plate 30 can be joined with sufficient adhesive strength without including the step of heating the frame material 10.

  Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples.

Example 1
<Manufacture of frame material>
Santoplane 121-67W175 (manufactured by Advanced Elastomer Systems) is used as the resin material for the frame body, and Santoprene X8291-85TL (manufactured by Advanced Elastomer Systems) is used as the resin material for the adhesion-imparting layer. A frame material of 150 × 4 mm (frame material body thickness 2.9 mm, adhesion material layer thickness 0.1 mm, total thickness 3 mm), in which the frame material body and the adhesion-imparting layer are integrally formed by extrusion, is manufactured. did.

<Applying primer>
A urethane-based primer for glass bonding (trade name: # 435-41, manufactured by Sunstar Giken Co., Ltd.) was applied to a range of 90 × 4 mm of the frame material so as to be 15 g / m ^{2 in} terms of resin.

<Manufacture of plate-shaped body for window with frame material>
A 300 × 300 mm (thickness 2 mm) tempered glass plate (plate for window) was heated to 130 ° C., and in this state, the glass plate and the primer-coated surface of the frame material were pressed against each other at 0.77 MPa for 30 seconds. An example plate member with a frame material was obtained. The temperature of the glass plate at the time of bonding was 130 ° C.

Example 2
In Example 1 described above, the pressure contact time between the glass plate and the frame member was set to four stages of 5 seconds, 10 seconds, 20 seconds, and 30 seconds, and the pressure was set to three stages of 0.77 MPa, 0.54 MPa, and 0.37 MPa. Except for the above, a window plate with a frame member was manufactured under the same conditions as in Example 1 above.

Comparative Example 1
A window plate with a frame material of Comparative Example 1 was obtained under the same conditions as in the Examples except that the primer was applied to both the frame material and the glass plate.

Comparative Example 2
A windowed plate with frame material of Comparative Example 2 was obtained under the same conditions as in the Examples except that the primer was applied only to the glass plate.

Test example 1
About the plate-like body with a frame material of Example 1 and Comparative Examples 1 and 2, a peel test was performed by the following method to evaluate the peel strength. The results are summarized in Table 1. In Table 1, the peel strength is 10 mm width, that is, a value converted to N / cm.

  The peel test was performed at room temperature in accordance with JIS-K6256, and the non-adhered portion of the frame specimen was gripped with a chuck, and the test was performed under the conditions of a pulling speed of 300 mm / min and a 90-degree peel.

  As the peel strength, the tensile strength (N / 5 mm) was measured when the frame material sample was broken or when the frame material sample was peeled from the glass plate, and two points were tested in both Examples and Comparative Examples ( n = 2).

The peeled state was B in the case of material destruction of the frame material sample itself, AfP in the case of interface peeling between the adhesion-imparting layer of the frame material and the primer, and AfG in the case of interface peeling between the glass and the primer.

  From the evaluation results shown in Table 1, in Example 1 where the primer was applied only to the adhesion-imparting layer of the frame material, the peeled state was material destruction of the frame material at a glass heating temperature of 120 ° C. or higher, and the peel strength was also It was enough. Therefore, it can be seen that in the examples, sufficient adhesive strength is obtained without heating the frame material.

  On the other hand, in Comparative Example 2 where the primer was applied only to the glass plate, even when the glass heating temperature was 120 ° C. or higher, the primer reacted with the high temperature, so the interface peeling between the frame material adhesion-imparting layer and the primer It can be seen that sufficient adhesive strength is not obtained. Moreover, also in the case of the comparative example 1 which applied the primer to both the frame material and the glass plate, since the same kind of phenomenon occurs in the primer on the glass plate side, it can be seen that the peel strength is inferior to that of Example 1. .

Test example 2
For each window plate with frame material of Example 2 prepared by changing the pressure contact time and pressure between the glass plate and the frame material, a peel test was performed in the same manner as in Test Example 1 to evaluate the peel strength. . The results are summarized in Table 2. In Table 2, the peel strength is 10 mm width, that is, a value converted to N / cm. Moreover, the hyphen (-) in the table represents that the test was not performed.

  From the evaluation results shown in Table 2, it can be seen that sufficient adhesion strength is obtained when the pressure contact time between the glass plate and the frame material is 5 seconds or more and the pressure is 0.37 MPa or more.

  The method for manufacturing a window plate with a frame material according to the present invention provides sufficient adhesion strength between the window plate body and the frame material, no adhesion unevenness, and the dimensional accuracy of the frame material does not deteriorate. It can be suitably used for automobile windows.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic process drawing which shows one Embodiment of the manufacturing method of this invention, Comprising: (a) The state which shape | molded the frame material, (b) The state which apply | coated the primer to the frame material, (c) For windows joined with a frame material It is sectional drawing which shows the state which has arrange | positioned the plate-shaped body, and the state which pressed the frame material and the plate-shaped body for windows (d).

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Frame material 10a Frame material main body 10b Adhesion provision layer 15 Receiving jig 20 Primer 30 Plate for window

Claims (6)

It is a method for manufacturing a window plate with a frame material obtained by joining a pre-molded resin frame material to a window plate body,
A step of forming a frame material body made of a thermoplastic elastomer, and an adhesion-imparting layer made of a thermoplastic elastomer to which adhesion is imparted are formed on the surface of the frame material body on the side facing the plate member for windows. A frame material forming step comprising the steps of:
A primer application step of applying a primer to the surface of the adhesion-imparting layer on the side facing the window plate,
A heating step of preheating the window plate;
While the temperature of the heated window plate is in a temperature state that enables adhesion to the frame member, a pressure contact step of pressing and bonding the window plate member and the frame member; The manufacturing method of the plate-shaped body for windows with a frame material characterized by including.   The method for manufacturing a window plate with a frame material according to claim 1, wherein an adhesive or a primer is not applied to a surface of the window plate body facing the frame material.   3. The frame-equipped window according to claim 1, wherein in the frame material forming step, the step of forming the frame material body and the step of forming the adhesion-imparting layer are performed by coextrusion molding or co-injection molding. A method for producing a plate-like body.   The method for producing a plate with a frame material according to any one of claims 1 to 3, wherein the primer is a urethane glass adhesion primer containing a silane coupling agent.   The manufacturing method of the plate with a frame material as described in any one of Claims 1-4 which performs the said heating process so that the said plate for windows may become 120-200 degreeC. The manufacturing method of the window-shaped board | plate body with a frame material as described in any one of Claims 1-5 which performs the said pressure-welding process by pressure 0.3-1 Mpa and pressure welding time 2-15 seconds.

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