JP2019070090A - Elastomer molded body transferring method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfer method of an elastomer molded product capable of easily transferring the elastomer molded product. A method for transferring an elastomer molded product having self-adhesive strength, wherein the elastomer molded product with a protective film having the elastomer molded product and a protective film that protects one side surface of the elastomer molded product is protected. By bringing the adherend into contact with the adhesive surface on the side opposite to the film side and peeling the protective film from the elastomer molded body while applying vibration from the protective film side to the adhesive surface by an oscillator, the elastomer molded body is made said. A method for transferring an elastomer molded product, which comprises transferring to an adherend. [Selection diagram] Fig. 2

Description

  The present invention relates to a method of transferring a self-adhesive elastomeric molding.

  In recent years, electronic devices such as televisions, computers, communication devices, and industrial devices have become smaller and more sophisticated, and the heat generation density tends to increase. In order for these electronics to function properly, it is necessary to remove heat from the electronics,

  Various methods have been proposed as means for removing this heat. In particular, for electronic components having a large amount of heat generation, methods have been proposed in which a heat conductive material is interposed between the electronic component and a member such as a heat sink to dissipate heat (Patent Documents 1 and 2).

  In these heat radiation methods, the gap generated at the interface between the electronic component and the thermally conductive material can be suppressed, and heat radiation can be efficiently promoted by following the shape of the electronic component and adhering closely. One example of such a thermally conductive material is a thermally conductive grease having fluidity, but the coating apparatus tends to be large and complicated to control the thickness of the coating and to suppress voids generated by air entrainment. There is.

  In order to mount the thermally conductive material on the electronic component more easily, an elastomer molded body may be used in which the thermally conductive material is previously cured in the form of a sheet. Similar to the above-described heat conductive grease, such an elastomer molded body is designed to have a soft and adhesive material design in order to follow and adhere to the shape of the electronic component.

  In order to prevent foreign matter adhesion to the surface, the elastomer molded body with self-adhesive strength is protected by a protective film until just before assembling to an electronic part, and the protective film is removed when mounting. Be done. At this time, there is a problem that the protective film can not be easily peeled off by the action of the adhesive force acting between the protective film and the elastomer molded body. In addition, there has been a demand for a method of rapidly peeling the protective film while preventing deformation of the elastomer molded product, damage to the surface, and deterioration in uniformity of thickness, and automation of the mounting process.

  In order to reduce the adhesion between the elastomer molded body and the protective film, a method of applying a release agent to the protective film side and a method of applying embossing to the protective film have been proposed (Patent Document 3). However, in these methods, the release agent component migrates to the elastomer molded body side and the cost of the protective film increases, and the effect is dependent on the combination of the elastomeric molded body and the protective film, so the essential problem solving It can not be said that

Japanese Patent Application Laid-Open No. 56-28264 Japanese Patent Application Laid-Open No. 61-157587 Japanese Patent Application Laid-Open No. 2002-084083

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a method for transferring an elastomer molded product which can easily transfer an elastomer molded product.

  In order to solve the above problems, according to the present invention, there is provided a method of transferring an elastomer molding having self-adhesive strength, comprising the elastomer molding and a protective film for protecting one side of the elastomer molding. An adherend is brought into contact with the adhesive surface opposite to the protective film side of the elastomeric molded article with a protective film, and the protective film is exposed to the vibration from the protective film side by a vibrator from the elastomeric molded article. There is provided a method for transferring an elastomer molded body, which comprises transferring the elastomer molded body to the adherend by peeling off.

  Thus, peeling can be promoted between the protective film and the elastomer molded body by applying vibration from the protective film side by the vibrator, and the elastomer molded body can be easily transferred from the protective film to the adherend. Is possible.

  In this case, the amplitude of the vibration is preferably 10 μm to 120 μm.

  When the amplitude of vibration is 10 μm or more, peeling between the protective film and the elastomer molded body is sufficiently promoted. In addition, if the amplitude is 120 μm or less, heat generation due to excessive energy can be prevented, and there is no risk of damage to the elastomer molded body or fusion of the protective film. Therefore, the elastomer molded body having self-adhesive strength can be rapidly transferred from the protective film to the adherend without deformation or damage.

  In this case, it is preferable to set the frequency of the vibration to 15 kHz to 50 kHz.

  As described above, when the frequency is 15 kHz or more, the directivity of vibration is sufficient, sufficient peel strength is obtained, and the protective film quickly has a self-adhesive force without deformation or damage. Can be transferred to the adherend. In addition, it is preferable that the frequency is 50 kHz or less because there is no possibility that the horn itself is broken due to the internal stress generated in the horn.

  Further, in this case, the protective film is provided on the upper side surface of the elastomer molded body, and the vibration has an amplitude in a direction parallel to the laminating surface of the elastomer molded body and the protective film from the upper side of the protective film. It is preferable to give as.

  Thus, by providing the protective film on the upper side surface of the elastomer molded body and applying the vibration from the upper side of the protective film, the weight and the like of the elastomeric molded body work, and the protective film on the lower side surface of the elastomeric molded body The transfer can be performed with a smaller force than in the case of providing the vibration from the lower side of the protective film. Further, by giving vibration so as to have an amplitude in a direction parallel to the laminating surface of the elastomer molded body and the protective film, it is possible to vibrate the elastomer molded body and the protective film in the direction of shearing each other at the interface. Can produce sufficient peel force.

  In this case, the vibration may be applied to the entire surface of the protective film at one time, or continuously applied from the end of the protective film by moving the vibrator relative to the protective film. preferable.

  By peeling off the protective film while applying vibration in this manner, the protective film can be rapidly removed, and the protective film can be prevented from re-adhering to the transferred elastomer molded body. Moreover, the peeling process time of a protective film can be shortened and automation of a mounting process can be made easy.

  In this case, it is preferable to use, as the elastomer molding, one containing a silicone composition containing organopolysiloxane as a main component.

  A silicone composition mainly composed of such organopolysiloxane is preferable from the viewpoint of heat resistance and chemical stability.

  Moreover, in this case, it is preferable to use what contains a thermally conductive filler as said elastomer molded object.

  An elastomer molded body containing such a thermally conductive filler is preferable because it can rapidly disperse local heat generated by vibration.

  According to the transfer method of the elastomer molded body of the present invention, the elastomer molded body can be easily transferred from the protective film to the adherend. In addition, deformation and damage of the self-adhesive elastomer molded body can be prevented, and transfer can be performed quickly. As a result, the time for peeling off the protective film can be significantly reduced, and automation of the mounting process can be facilitated.

It is a schematic diagram which shows an example of the elastomer molded object with a protective film in this invention. It is a figure which shows an example of the transcription | transfer method of the elastomer molded object of this invention. It is a figure which shows another example of the transfer method of the elastomer molded object of this invention. It is a figure which shows another example of the transfer method of the elastomer molded object of this invention. It is a schematic diagram which shows the shape of the horn which can be used in this invention.

  As a result of intensive investigations to achieve the above object, the present inventors provide protection by applying vibration from the protective film side to an elastomer molded body having self-adhesiveness and having one side protected by the protective film. It has been found that the peeling between the film and the elastomer molding can be promoted and the elastomer molding can be easily transferred from the protective film to the adherend, and the present invention has been achieved.

  That is, the present invention relates to a method for transferring an elastomer molding having self-adhesive strength, which comprises the above-mentioned elastomer molding and a protective film-containing elastomer molding having a protective film for protecting one side surface of the elastomer molding. The elastomer molded body is brought into contact with an adherend on the side opposite to the protective film side, and the protective film is peeled from the elastomer molded body while giving vibration from the protective film side by a vibrator to this. The method of transferring an elastomer molded body, comprising:

  Hereinafter, the transfer method of the self-adhesive elastomer molding of the present invention will be described in detail by exemplifying a transfer form using a vibration generator.

  First, as shown in FIG. 1, an elastomer molded body 10 with a protective film is prepared, which has an elastomer molded body 1 having self-adhesive power and a protective film 2 for protecting one side surface 1 a of the elastomer molded body 1. As a form of such an elastomer molded article 10 with a protective film, one in which one side surface 1a of the individual elastomer molded article 1 is individually protected by the protective film 2 (FIG. 1 (A)) or a divided one (plural The one in which the one side surface 1 a of the elastomer molded body 1 is protected by the continuous protective film 2 (FIG. 1 (B)) and the like can be mentioned.

  Then, as shown in FIGS. 2 to 4, the adherend 3 is brought into contact with the adhesive surface 1b on the side opposite to the protective film 2 side of the elastomeric molded article 10 with a protective film, and this is vibrated from the protective film 2 side. The elastomer molded body 1 is transferred to the adherend 3 by peeling the protective film 2 from the elastomer molded body 1 while giving vibration by the element 4.

  In FIG. 2, the vibrator 4 is generated by moving the vibrator 4 in the direction 6 from the end of the protective film 2 after bringing the elastomer molded body 10 with the protective film into complete contact with the adherend 3 in advance. It represents the simplest transfer form in which the protective film 2 is peeled off in the direction 7 while vibration is continuously applied from the end of the protective film 2 via the horn 5.

  As shown in FIG. 2, the adherend 3 and the elastomer molded body 10 with a protective film may be brought into complete contact in advance, or as shown in FIG. It is also possible for the divided elastomeric moldings 1 protected by the continuous protective film 2 to be separately transferred onto the adherend 3 at any position. Incidentally, as shown in FIG. 3, by pressing the horn 5 connected to the vibrator 4 against the protective film 2, the adherend 3 is brought into contact with the elastomeric molded body 10 with the protective film only at the place where the vibration is given. be able to. That is, the contact between the elastomer molded body 1 and the adherend 3 may be made in advance before applying the vibration, or the horn 5 connected to the vibrator 4 is pressed against the protective film 2 at the same time as the elastomer You may make it the molded object 1 and the to-be-adhered body 3 contact.

  In addition, although the form which moves vibrator 4 (and horn 5) itself is shown in FIG.2 and FIG.3, as a method of moving vibrator 4 relatively with respect to the protective film 2 besides this, For example, the vibrator 4 is fixed, and the method of stage-moving the elastomer molded object 10 / adherend 3 side with a protective film is also mentioned. By doing this, it is possible to design a line for moving the stage of the elastomer molded body 10 / adherend 3 side with the protective film in a stage, and it is also possible to continuously wind up the peeled protective film 2 Become. Of course, both the vibrator 4 (and the horn 5) and the side of the elastomer molded body 10 with the protective film / adherend 3 may be moved.

  Further, as long as the device size permits, as shown in FIG. 4, the elastomer molded body 10 with a protective film is brought into contact with the adherend 3 and vibration is applied to the entire laminated surface of the protective film 2 and the elastomer molded body 1 at a time. By peeling the protective film 2 from the elastomer molded body 1 in the direction 7, it is possible to adopt a transfer form in which transfer to the adherend 3 is performed.

  According to such a method for transferring an elastomer molded body of the present invention, the elastomer molded body can be easily transferred from the protective film to the adherend. Moreover, it becomes possible to transfer, preventing the deformation | transformation of the elastomer molded object, the damage to the surface, and the deterioration of the uniformity of thickness by the adhesive force which works between a protective film and an elastomer molded object. In addition, since the tendency of deformation of the elastomer molded body is more remarkable as the speed of peeling of the protective film is faster, the process time of the protective film peeling can be shortened according to the present invention, and the automation of the mounting process is easy. Can be

  The amplitude of vibration given from the horn 5 to the protective film 2 is preferably 10 μm to 120 μm, and more preferably 16 μm to 100 μm. When the amplitude of vibration is 10 μm or more, sufficient energy can be given, and peeling between the protective film and the elastomer molded body is sufficiently promoted. In addition, if the amplitude is 120 μm or less, heat generation due to excessive energy can be prevented, and there is no risk of damage to the elastomer molded body or fusion of the protective film.

  Further, when the vibration amplitude direction is parallel to the lamination surface of the elastomer molded body 1 and the protective film 2, the elastomer molded body 1 and the protective film 2 can be vibrated in the direction of shearing each other at the interface. It is preferable because it can generate sufficient peeling force.

  Further, by providing the protective film 2 on the upper side surface of the elastomer molded body 1 and applying vibration from the upper side of the protective film 2, the weight etc. of the elastomer molded body 1 acts to make the protective film 2 an elastomer molded body 1 The transfer can be performed with a smaller force than in the case where the vibration is provided from the lower side of the protective film 2 by providing the lower side.

  Furthermore, 15 kHz-50 kHz are preferable and, as for the frequency of the vibration given to the protective film 2 from the horn 5, 20 kHz-40 kHz are more preferable. As described above, when the frequency is 15 kHz or more, the directivity of the vibration is sufficient, and a sufficient peeling force can be obtained. In addition, it is preferable that the frequency is 50 kHz or less because there is no possibility that the horn itself is broken due to the internal stress generated in the horn.

  The horn 5 serving as a transmission portion of the vibration generated from the vibrator 4 can use a metal such as an aluminum alloy, a titanium alloy, or a steel, and may be plated to prevent wear. Typical cross-sectional shapes of the horn include (a) wedge-shaped, (b) trapezoidal, (c) rectangular, (d) convex, etc. shown in FIG. Any shape can be selected. Among these, the U-shape like a (a) trapezoid is preferable.

  After peeling off the protective film 2 while applying vibration, it is preferable to remove the protective film 2 promptly in order to prevent the protective film 2 from re-adhering to the transferred elastomer molded body 1. A method of simultaneously (at once) peeling the protective film 2 while giving vibration to the entire surface of the protective film, moving the miniaturized horn 5 relative to the protective film 2, and vibrating continuously from the end of the protective film 2 It is possible to remove the protective film 2 quickly by the method of peeling off the protective film while giving the above, and re-adhesion can be avoided.

  The elastomer molded body 1 having self-adhesive force transferred to the adherend 3 may be a thermosetting resin material which does not melt due to frictional heat generated by vibration as a candidate, but from the viewpoint of heat resistance and chemical stability It is preferable to include a silicone composition based on organopolysiloxane.

The organopolysiloxane forming the silicone composition has an average compositional formula: R _a SiO 2 _(4-a) / ₂ (wherein R is the same or different, substituted or unsubstituted carbon atoms, preferably 1 to 10, preferably 1 to 4) 8 represent a monovalent hydrocarbon group, and a is a positive number of 1.90 to 2.05).

  Examples of R include alkyl groups such as methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl and octadecyl; cyclopentyl and cyclohexyl Cycloalkyl groups; aryl groups such as phenyl group, tolyl group, xylyl group and naphthyl group; aralkyl groups such as benzyl group, phenethyl group and 3-phenylpropyl group; 3,3,3-trifluoropropyl group, 3- Halogenated alkyl groups such as chloropropyl group; and alkenyl groups such as vinyl group, allyl group, butenyl group, pentenyl group and hexenyl group.

  The organopolysiloxane generally has a main chain consisting of dimethylsiloxane units, or a part of the methyl group in the main chain is a vinyl group, a phenyl group, a 3,3,3-trifluoropropyl group, etc. Those substituted with are preferred. Further, it is preferable that the molecular chain end is blocked with a triorganosilyl group or a hydroxyl group, and examples of the triorganosilyl group include a trimethylsilyl group, a dimethylvinylsilyl group and a trivinylsilyl group.

  In addition, the elastomer molded body 1 is a thermally conductive filler material, such as nonmagnetic metal such as copper or aluminum, alumina, silica, magnesia, bengara, beryllia, as a thermally conductive filler, in order to disperse local heat generated by vibration rapidly. Metal oxides such as titania and zirconia, metal nitrides such as aluminum nitride, silicon nitride and boron nitride, metal hydroxides such as magnesium hydroxide, artificial diamond or silicon carbide, etc. are generally used as thermally conductive fillers. A substance may be included. Moreover, the thing of 0.1-200 micrometers of center particle diameters can be used, and 1 type or 2 types or more may be combined and used.

  Further, the protective film 2 is not particularly limited, but those conventionally used as protective films such as polyethylene terephthalate (PET) and polyethylene can be used.

  The material and the shape of the adherend 3 are not particularly limited as long as the object is to transfer the elastomer molding.

EXAMPLES The present invention will be specifically described below by showing Examples and Comparative Examples, but the present invention is not limited to the following Examples.
Example 1
A 10 mm square thermally conductive sheet TC-50CAS-30 (manufactured by Shin-Etsu Chemical Co., Ltd.), one side of which is protected by a polyethylene terephthalate (PET) protective film, against the adherend surface of the aluminum alloy work that is the adherend It arrange | positioned so that a sticking surface (adhesive surface) might become parallel. The tip of an aluminum alloy convex horn (made by Nippon Avionics) connected to a vibrator is pressed from the end of the top surface of the PET protective film to bring the thermally conductive sheet into contact with the adherend surface, and the amplitude 80 μm, frequency It moved to the other end while giving 28 kHz vibration. At this time, the results of peeling off the PET protective film from the end following the movement of the horn are shown in Table 1.

(Example 2)
With respect to the adherend surface of the adherend polypropylene film placed on a flat work table, a 10 mm square transparent silicone sheet (Shin-Etsu Chemical Co., Ltd.) with one side protected by a PET protective film (Adhesive surface) was arranged so as to be parallel. The tip of the aluminum alloy wedge-shaped horn connected to the vibrator is pressed from the end of the upper surface of the PET protective film to bring the sheet into contact with the adherend surface, while giving vibration with an amplitude of 24 μm and a frequency of 27 kHz. It was moved to the end. At this time, the results of peeling off the PET protective film from the end following the movement of the horn are shown in Table 1.

(Example 3)
10 mm square thermal conductivity, one side of which is protected by a polyethylene protective film, against the adherend surface of the adherend, ethylene-tetrafluoroethylene copolymer (ETFE) film, placed on a flat work bench It arrange | positions so that the sticking surface (adhesive surface) of the sheet | seat TC-200CAS-30 (made by Shin-Etsu Chemical Co., Ltd.) becomes parallel. The tip of the aluminum alloy wedge-shaped horn connected to the vibrator is pressed from the end of the top surface of the polyethylene protective film to bring the thermally conductive sheet into contact with the adherend surface, giving vibration of amplitude 50 μm and frequency 28 kHz. It was moved to the other end. At this time, the results of peeling the polyethylene protective film from the end following the movement of the horn are shown in Table 1.

(Example 4)
Arrange so that the pasting surface (adhesive surface) of the 10 mm square thermally conductive sheet TC-50CAS-30 protected by the PET protective film is parallel to the adhesion surface of the aluminum alloy work that is the adherend. did. The tip of the titanium alloy trapezoid horn connected to the vibrator is pressed from the upper end of the PET protective film from the top end of the PET protective film to bring the thermally conductive sheet into contact with the adherend surface to give vibration of amplitude 24 μm and frequency 50 kHz. It was moved to one end. At this time, the results of peeling off the PET protective film from the end following the movement of the horn are shown in Table 1.

(Example 5)
Arrange so that the pasting surface (adhesive surface) of the 10 mm square thermally conductive sheet TC-50CAS-30 protected by the PET protective film is parallel to the adhesion surface of the aluminum alloy work that is the adherend. did. The tip of the titanium alloy trapezoid horn connected to the vibrator is pressed from the upper end of the PET protective film to bring the thermally conductive sheet into contact with the adherend surface, while giving vibration with an amplitude of 120 μm and a frequency of 20 kHz. It was moved to one end. At this time, the results of peeling off the PET protective film from the end following the movement of the horn are shown in Table 1.

(Example 6)
With respect to the adherend of the aluminum alloy work which is a to-be-adhered body, it was arrange | positioned so that the adhesion surface (adhesive surface) of the 10-mm square transparent silicone sheet protected by one side with the PET protective film might become parallel. The tip of the aluminum alloy wedge-shaped horn connected to the vibrator is pressed from the top edge of the PET protective film to bring the sheet into contact with the adherend surface, and the other edge is vibrated with an amplitude of 10 μm and a frequency of 40 kHz. I was moved to. At this time, the results of peeling off the PET protective film from the end following the movement of the horn are shown in Table 1.

(Example 7)
The adhesive surface (adhesive surface) of a 10 mm square transparent silicone sheet, one side of which was protected by a PET protective film, was disposed parallel to the adherend surface of the aluminum alloy work that is the adherend. The tip of the aluminum alloy wedge-shaped horn connected to the vibrator is pressed from the top edge of the PET protective film to bring the sheet into contact with the adherend surface, and the other edge is vibrated with an amplitude of 80 μm and a frequency of 15 kHz. I was moved to. At this time, the results of peeling off the PET protective film from the end following the movement of the horn are shown in Table 1.

(Comparative example)
The pasting surface of a 10 mm square thermally conductive sheet TC-50CAS-30, one side of which is protected by a PET protective film, is disposed parallel to the adhesion surface of the aluminum alloy work that is the adherend. The tip of an aluminum alloy convex horn connected to a vibrator whose vibration was stopped was pressed from the top end of the PET protective film and moved to the other end. At this time, the results of peeling off the PET protective film from the end following the movement of the horn are shown in Table 1.

  As apparent from Table 1, in the comparative example, no vibration was given from the vibrator, so peeling of the elastomer molded body and the protective film was not promoted, and the elastomer molded body could not be transferred to the adherend. . On the other hand, in the transfer method of the present invention, by applying vibration from the protective film side with a vibrator, peeling between the elastomer molded body and the protective film is promoted, and it is easily performed regardless of the combination of the elastomer molded body and the protective film. It has become possible to transfer the elastomer molding from the protective film to the adherend. Moreover, it became possible to prevent a deformation | transformation and damage of an elastomer molding, and to transfer rapidly (Examples 1-7).

  The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the present invention has the substantially same constitution as the technical idea described in the claims of the present invention, and the same effects can be exhibited by any invention. Contained in the technical scope of

DESCRIPTION OF SYMBOLS 1 ... Elastomer molded object, 1a ... One side of the elastomer molded object protected by a protective film 1b ... Adhesive surface, 2 ... Protective film, 3 ... Adherence body, 4 ... Vibrator, 5 ... Horn, 6 ... Vibrator's Movement direction, 7 ... peeling direction of protective film, 10 ... elastomeric molded body with protective film.

Claims (7)

A method of transferring an elastomer molding having self-adhesive strength, comprising:
An adherend is brought into contact with the adhesive surface on the side opposite to the protective film side of the elastomeric molded article with a protective film having the elastomeric molded body and a protective film for protecting one side of the elastomeric molded body. A method of transferring an elastomer molded body, comprising transferring the elastomer molded body to the adherend by peeling off the protective film from the elastomer molded body while applying vibration from a side of the protective film with a vibrator.   The amplitude of the said vibration shall be 10 micrometers-120 micrometers, The transcription | transfer method of the elastomer molded object of Claim 1 characterized by the above-mentioned.   The frequency of the said vibration shall be 15 kHz-50 kHz, The transfer method of the elastomer molded object of Claim 1 or Claim 2 characterized by the above-mentioned.   The protective film is provided on the upper side surface of the elastomer molded body, and the vibration is applied from above the protective film so as to have an amplitude in a direction parallel to the laminating surface of the elastomeric molded body and the protective film. The transfer method of an elastomer molded body according to any one of claims 1 to 3, characterized in that   The vibration may be applied to the entire surface of the protective film at one time, or continuously applied from the end of the protective film by moving the vibrator relative to the protective film. The transfer method of the elastomer molded body according to any one of claims 1 to 4.   The method for transferring an elastomer molded body according to any one of claims 1 to 5, wherein a silicone composition containing an organopolysiloxane as a main component is used as the elastomer molded body. The method for transferring an elastomer molded body according to any one of claims 1 to 6, wherein the elastomer molded body contains a thermally conductive filler.

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