JP4137837B2 - Heat dissipation sheet laminate, wound body thereof, and method of attaching heat dissipation sheet - Google Patents

Description

  The present invention relates to a tape-like laminate including a heat dissipation sheet made of a silicone gel composition and a wound body obtained by winding the laminate. The present invention also relates to a method for attaching the heat dissipation sheet.

  Electronic components such as CPUs, thyristors, and power transistors generate heat during use, and the performance of the electronic components may deteriorate due to the heat. Therefore, a heat radiator is attached to an electronic component that generates heat. Usually, a heat radiating sheet is used as an interface between the heat generating elements and the heat radiating body. Recently, a sheet made of a heat conductive silicone gel composition as a heat radiating sheet is very soft and can be brought into close contact with the heat radiating element and the heat generating element.

  For example, as disclosed in Patent Document 1, Patent Document 2, and the like, such a heat dissipation sheet is obtained by using a release film such as two polyester films and a silicone gel composition containing a thermally conductive filler from both sides. It is manufactured by sandwiching, rolling while heating, and curing to a predetermined hardness.

  The obtained heat-dissipating sheet is attached as follows. First, the release film on one side of the heat dissipation sheet obtained as described above is peeled off. Next, only the heat radiating sheet is cut (or half cut) into a predetermined size (for example, in a grid pattern) with the heat radiating sheet adhered to the other release film. Each individual heat-dissipating sheet is grasped by a hand and peeled off from the release film, and then applied to a target location (for example, a heat-dissipating part of a semiconductor device or a heat sink; hereinafter referred to as “applied part”). wear.

  However, in general, a gel type heat radiation sheet is very soft. Therefore, in the above heat radiating sheet, there is a problem that if the heat radiating sheet is directly grasped by hand at the time of attaching, the heat radiating sheet is stretched or torn and the handling property is not good.

  Therefore, Patent Document 3 discloses a heat dissipation sheet by the following manufacturing method. That is, after the silicon gel composition is sandwiched between two release films from both sides in the same manner as described above to produce a heat dissipation sheet, one release film is peeled off. Next, only the heat radiating sheet is punched into a predetermined size, and unnecessary portions of the heat radiating sheet are removed. Thus, the heat-dissipating sheet is arranged and adhered in a grid-point manner on the release film. Next, the release film is cut into a grid pattern in a region where the heat dissipation sheet is not adhered. In this way, a large number of heat-dissipating sheets with a release film in a state where one heat-dissipating sheet is adhered onto a larger release film is obtained.

  According to this heat-dissipating sheet with a release film, in the work of attaching the heat-dissipating sheet, the release film protruding from the heat-dissipating sheet can be grasped. This can be done without touching the hand directly.

  However, any of the above-described heat radiating sheets is based on the premise that the pasting operation is performed manually, and there are many obstacles to automating the pasting operation by a machine.

  That is, in order to automate the pasting work, either (1) supplying a heat-dissipating sheet on the part to be pasted, or (2) bringing the part to be pasted into contact with the heat-dissipating sheet is performed. Need to let the machine do it.

  However, in the heat radiating sheet with release film described in Patent Document 3, since the heat radiating sheets with release film are separated, the heat radiating sheet with release film is used in any of the above cases. Must be arranged regularly. However, it is difficult to mechanize this arrangement work.

  In addition, in the heat dissipation sheet adhered to the release film disclosed in Patent Document 1 and Patent Document 2, the individual heat dissipation sheets can be easily and regularly arranged by cutting them into a grid pattern, Since the heat dissipating sheets are arranged two-dimensionally, in order to perform automatic attachment, it is necessary to perform two-dimensional positioning, resulting in complication of the apparatus.

In any of the above cases, it is necessary to place the heat-dissipating sheet adhered to the release film on a large plate prior to the pasting operation. When the number of heat-dissipating sheets to be attached becomes large, it is necessary to prepare a large number of such plates, and a large space is required when storing or transferring the plates, resulting in an increase in cost.
JP-A-11-335472 JP-A-10-183110 Registered Utility Model No. 3072491

  An object of the present invention is to solve the above-mentioned conventional problems, and to provide a heat-dissipating sheet laminate and a wound body thereof that make it possible to automate the attaching operation of the heat-dissipating sheet with a machine. Another object of the present invention is to provide a heat dissipating sheet laminate that can accommodate a large number of heat dissipating sheets in a compact manner, and a wound body thereof. It is another object of the present invention to provide a method of attaching a heat dissipation sheet that makes it possible to automate the operation of attaching the heat dissipation sheet by a machine.

  In order to achieve the above object, the present invention has the following configuration.

The heat dissipating sheet laminate of the present invention has a plurality of laminated films formed by adhering a heat dissipating sheet made of a silicone gel composition to a support film, and a long carrier tape, and the area of the support film is Larger than the area of the heat dissipation sheet, the support film protrudes from the heat dissipation sheet to form an ear portion, and the plurality of laminated films are arranged at least in the longitudinal direction of the carrier tape, and the support film side The surface of the heat dissipation sheet on the side of the support film is higher in hardness than the surface on the opposite side . According to such a configuration, the heat dissipation sheet can be transferred to the adherend portion by holding the ear portion, separating the laminated film from the carrier tape, and bringing the heat dissipation sheet into close contact with the adherend portion. And since the laminated | multilayer film is adhere | attached on the longitudinal direction of the carrier tape, a laminated | multilayer film can be supplied to the same position only by unwinding the wound heat-radiation sheet laminated body sequentially, for example. Therefore, it becomes possible to automate the pasting operation of the heat radiation sheet by the machine. Moreover, since the heat-radiation sheet laminated body has a long tape shape, many heat-radiation sheets can be accommodated compactly by winding this, and storage and conveyance are easy. In addition, since the surface of the heat dissipation sheet on the support film side is harder than the surface on the opposite side, the surface of the heat dissipation sheet on the side opposite to the support film is in close contact with the part to be adhered. Since it becomes easy to peel at the interface between the sheet and the support film, the transfer of the heat-dissipating sheet to the adherend portion side can be performed stably.

  In the above, “multiple” laminated films means that the adjacent laminated films are completely cut individually, and that a portion between the adjacent laminated films is cut, and portions other than the cut Then, it is assumed that the connection (so-called half cut) includes a case where it can be easily separated into a plurality of portions by applying an external force.

  In the heat dissipation sheet laminate, in each of the laminated films on the same row in the longitudinal direction of the carrier tape, the ears are disposed on the same side in the width direction of the carrier tape with respect to the heat dissipation sheet. Is preferred. That is, it is preferable to arrange so that the ears of the laminated film arranged in the longitudinal direction are continuous in either one or both in the width direction. According to such a preferable configuration, since the formation direction of the ear portion of each laminated film is the same, the machine can easily grip the ear portion.

  In the heat dissipation sheet laminate, two or more laminated films may be arranged side by side in the width direction of the carrier tape. According to such a preferable configuration, a large number or a plurality of types of heat radiation sheets can be mounted on one heat radiation sheet laminate.

  Further, in the above heat dissipation sheet laminate, in the two laminated films arranged side by side in the width direction, the two laminated films are arranged side by side in the width direction of the carrier tape, It is preferable that the carrier tape is disposed along the end in the width direction. By arranging two laminated films side by side in the width direction, a large number or two types of heat radiation sheets can be mounted on one heat radiation sheet laminate. Moreover, since each ear | edge part is arrange | positioned along the edge of the width direction of a carrier tape, a machine can hold | grip each ear | edge part easily.

  Moreover, in the above, the heat-radiation sheet | seat which each comprises two or more said laminated films arrange | positioned along with the width direction may differ in a shape or thickness. According to such a preferable configuration, even when different heat dissipation sheets are attached to a plurality of attachment positions, all of these heat dissipation sheets can be mounted on one heat dissipation sheet laminate.

  Moreover, in said heat-radiation sheet laminated body, the hole or notch may be formed in the said ear | edge part, or printing may be given. As a result, the machine can accurately recognize the position of the ear. The hole can also be used as an engagement hole when the machine grips the ear.

  Moreover, in said heat-radiation sheet laminated body, the film different from the said support body film may be connected to the said ear | edge part. According to such a preferable configuration, the area of the ear portion is substantially enlarged, and the gripping operation by the machine is stabilized. Moreover, the amount of heat-dissipating sheet disposal required in the process of forming the ears can be reduced.

  In this case, a hole or a notch may be formed or printed on the other film. This allows the machine to accurately recognize the position of the other film. The hole can also be used as an engagement hole when the machine holds the other film.

  Moreover, the said another film may be colored. This allows the machine to accurately recognize the position of the other film.

  In the heat dissipation sheet laminate, the carrier tape may be paper or a resin film.

  In the heat dissipation sheet laminate, the surface of the carrier tape opposite to the surface to which the support film is adhered and the surface of the heat dissipation sheet opposite to the surface to be adhered to the support film. Is preferably smaller than the adhesive force between the heat dissipation sheet and the support film. According to such a preferable configuration, when the heat radiating sheet laminate is wound and then unwound, the heat radiating sheet can be unwound in a state of being adhered onto the support film.

  In the heat dissipation sheet laminate, the surface of the carrier tape opposite to the surface to which the support film is adhered and the surface of the heat dissipation sheet opposite to the surface to be adhered to the support film. Is preferably smaller than the adhesive force between the support film and the carrier tape. According to such a preferable configuration, when the heat radiating sheet laminate is wound and then unwound, it can be unwound in a state where the support film of the laminated film and the carrier tape are adhered.

  Moreover, in said heat-radiation sheet laminated body, it is preferable that the mold release process is performed to the surface on the opposite side to the surface to which the said support body film of the said carrier tape was adhere | attached. According to such a preferable configuration, when the heat radiating sheet laminate is wound and then unwound, the heat radiating sheet can be prevented from being unwound in a state of being directly adhered to the carrier tape.

  Moreover, in said heat-radiation sheet laminated body, it is preferable that the said support body film and the said carrier tape are adhere | attached through the adhesive. According to this preferable structure, the laminated film which consists of a heat-radiation sheet and a support body film can be easily peeled from a carrier tape.

  In this case, it is preferable that the adhesive force of the adhesive to the carrier tape is larger than the adhesive force of the adhesive to the support film. According to this preferable structure, when a laminated film is peeled from a carrier tape, it can prevent that an adhesive adheres to the support body film side.

  Next, the wound body of the heat dissipation sheet laminate of the present invention is configured by winding the heat dissipation sheet stack of the present invention. According to such a configuration, a large number of heat dissipation sheets can be stored in a compact manner, and storage and transportation are easy. Moreover, since the heat radiating sheet can be sequentially supplied to the same position by unwinding the heat radiating sheet laminate from the wound body, it is possible to automate the work of attaching the heat radiating sheet by a machine.

  In the wound body of the heat dissipation sheet laminate, when the heat dissipation sheet stack is unwound from the wound body, the support film and the carrier tape are adhered, and the heat dissipation sheet is the support film. It is preferable to be unwound in a state where it adheres to the surface. According to such a preferable configuration, the automatic affixing operation by the machine of the heat dissipation sheet can be stably performed with a high yield.

  Moreover, in the winding body of said heat radiating sheet laminated body, the surface may be wound with the mold release tape by which the mold release process was carried out. According to this preferable structure, when the heat radiating sheet laminate is unwound from the wound body, the heat radiating sheet can be unwound without directly sticking to the carrier tape.

  Further, in the wound body of the heat dissipation sheet laminate, the heat dissipation sheet stack includes a core body having a cylindrical surface and a pair of side plates attached to the core body so as to be spaced apart and substantially parallel to each other. It is preferable to be wound around a reel. According to such a preferable configuration, the form of the wound body can be stably maintained even when the heat radiation sheet laminate is elongated.

  Next, in the method for attaching a heat dissipation sheet of the present invention, the step of unwinding the heat dissipation sheet laminate from the wound body of the heat dissipation sheet laminate, and gripping the ear portion and removing the laminated film from the carrier tape It has the process of peeling, and the process of transferring the said heat radiating sheet to the said to-be-attached part side by sticking the said heat-radiating sheet of the said laminated | multilayer film to the to-be-attached part surface. According to such a configuration, it becomes possible to automate the work of attaching the heat dissipation sheet by the machine. Moreover, since the heat-radiation sheet laminated body is wound, many heat-radiation sheets can be accommodated compactly, and storage and conveyance are easy.

  In the above-described method for attaching a heat dissipation sheet, it is preferable that an adhesive force between the heat dissipation sheet and the support film is smaller than an adhesive force between the heat dissipation sheet and the surface to be pasted. According to such a preferable configuration, it is possible to stably transfer the heat radiation sheet to the part to be adhered.

  As described above, according to the present invention, it is possible to automate the attaching operation of the heat dissipation sheet by a machine.

  Moreover, by winding the heat-radiation sheet laminated body of this invention, many heat-radiation sheets can be accommodated compactly, and storage and conveyance are easy.

  The heat dissipating sheet of the present invention comprises a silicone gel composition in which a thermally conductive filler is dispersed and contained in a silicone gel.

  The thermally conductive filler is preferably at least one substance selected from the group consisting of metal oxide, aluminum nitride, boron nitride, silicon nitride, and silicon carbide. Among these, a metal oxide is preferable in terms of cost. As the metal oxide, for example, aluminum oxide, magnesium oxide, zinc oxide, titanium oxide and the like can be used, and aluminum oxide is particularly preferable. Moreover, the heat conductive filler to be used is not limited to one type, and two or more types may be used in combination.

  The content of the heat conductive filler is preferably 400 parts by weight or more, more preferably 400 to 2500 parts by weight with respect to 100 parts by weight of the silicone gel.

  Although the manufacturing method of the heat-radiation sheet of this invention is not specifically limited, If an example is given, it will be as follows.

  First, the heat conductive filler is added to the silicone gel and stirred until uniform to obtain a silicone gel composition. Thereafter, the composition may be degassed with a defoamer. The silicone gel composition thus obtained is sandwiched between two long support sheets, and the silicone gel composition is cured while being compressed to a predetermined thickness by passing between a pair of rolls while applying heat. .

The heating temperature at this time is appropriately determined according to the composition of the composition to be used and the desired hardness, and is not particularly limited, but is preferably in the range of 80 to 120 ° C. Moreover, although a pressurization force is suitably determined by the composition of the composition to be used, 3-15 N / mm < ² > is preferable.

  Moreover, as said support body sheet | seat, the resin film which consists of polyester or polyolefin, for example can be used.

  Although the thickness of the heat-radiation sheet of this invention is not specifically limited, A minimum is 0.1 mm or more, Furthermore, 0.15 mm or more is preferable, and an upper limit is 1.0 mm or less, Furthermore, 0.5 mm or less is preferable. If the heat dissipating sheet is thinner than this, the strength is reduced and handling becomes difficult, and if it is thicker than this, the heat conduction characteristics are deteriorated.

  Below, specific embodiment of the thermal radiation sheet laminated body of this invention using such a thermal radiation sheet, its winding body, and the bonding method of this thermal radiation sheet is described.

(Reference Embodiment 1)
1A is an overall side view showing a state in which a part of the heat-dissipating sheet laminate is unwound in the wound body of the heat-dissipating sheet laminate according to Reference Embodiment 1, and FIG. The enlarged side view of the part 1B of the heat-radiation sheet laminated body of A) unrolled, FIG.1 (C) is the top view.

  As shown in the drawing, the heat dissipation sheet laminate 110 of the present embodiment is configured by adhering a heat dissipation sheet 111 to one side of a long support tape 101. The heat radiation sheet 111 is cut at cutting positions 113 at substantially equal intervals in a direction substantially orthogonal to the longitudinal direction. Here, “cutting” refers to a case where the heat dissipation sheet 111 is cut until reaching the support tape 101, and a case where a predetermined depth is cut from the surface of the heat dissipation sheet 111 (half cut). Either may be sufficient.

  Such a heat radiating sheet laminate 110 is wound around the core body 103 with the heat radiating sheet 111 side inward to form the wound body of the present embodiment.

  Here, the heat dissipation sheet 111 is composed of the above-described silicone gel composition. Moreover, the support body tape 101 can use one of a pair of support body sheet | seat used in manufacture of the thermal radiation sheet mentioned above.

  For example, the work of attaching the heat radiation sheet 111 to the adherend using such a wound body is performed as follows.

  Hold the part to be stuck with the part to be stuck facing up. Next, the laminate 110 is unwound from the wound body of this reference embodiment so that the heat dissipating sheet 111 side is on the lower side. At this time, both are arrange | positioned so that the laminated body 110 may be located on the said to-be-pasted part. In this state, the laminate 110 is pressed against the part to be pasted from the support tape 101 side of the laminate 110. When the pressing is released, one heat radiating sheet 111 is transferred onto the pasted portion. Since each heat radiating sheet 111 is cut at the cutting position 113, the adjacent heat radiating sheets 111 are not transferred to the pasting portion together through the cutting position 113. Such an operation is performed by sequentially unwinding the laminated body 110, winding the support tape 101 sequentially, and sequentially transporting a large number of adherends, thereby automatically pasting the heat radiation sheet 111. be able to.

  Alternatively, the heat-dissipating sheet 111 is attached to the heat-dissipating sheet 111 by crimping the adherend portion of the adherend held by the robot arm on the heat-dissipating sheet 111 while unwinding the laminated body 110 so that the heat-dissipating sheet 111 side is on the upper side. You may transcribe | transfer to the sticking part side.

  In order to stably perform the automatic pasting operation of the heat dissipation sheet 111 as described above, it is preferable to satisfy the following conditions.

  First, when the laminated body 110 is unwound from the wound body of the laminated body 110 of the heat radiating sheet as shown in FIG. 1A, the heat radiating sheet 111 is adhered to only one surface of the support tape 101. Is preferably unwound. For this purpose, the adhesive force between one surface (first surface) of the support tape 101 and one surface (first surface) of the heat radiating sheet 111 is reduced by the other surface (second surface) of the support tape 101. Surface) and the other surface (second surface) of the heat dissipation sheet 111 is preferably smaller than the adhesive force.

  Secondly, it is preferable that the heat dissipation sheet 111 is always transferred to the adherend portion side when the heat dissipation sheet 111 of the laminate 110 is closely attached to the adherend portion and then separated. For this purpose, it is preferable that the adhesive force between the heat radiating sheet 111 and the adherend is larger than the adhesive force between the heat radiating sheet 111 and the support tape 101.

  It is preferable to perform surface treatment on the support tape 101 and / or the heat dissipation sheet 111 so as to satisfy the first and second conditions.

  As the surface treatment for the support tape 101, for example, a mold release treatment can be performed. By performing the mold release process, the adhesive force of the heat dissipation sheet 111 can be reduced. Examples of the mold release treatment include a method in which a fluorine compound, a silicone compound, an acrylic resin, a melamine resin, or the like is applied, or the surface is roughened with fine irregularities. In addition, when roughening the surface of the support tape 101, when the heat dissipation sheet 111 is peeled from the support tape 101 if the surface unevenness is too large, a part of the heat dissipation sheet 111 remains on the support tape 101 side. Because there is, it needs attention. An uneven surface of about 5 to 150 μm is preferable. Further, the mold release treatment may be performed only on one side of the support tape 101, or may be performed on both sides. At this time, it is possible to provide a difference in adhesive force between the front and back surfaces and the heat radiation sheet 111 by changing the type and degree of the release treatment on both sides.

  As the surface treatment for the heat radiation sheet 111, for example, there is a method of increasing the degree of cross-linking (that is, hardness) of the surface. When the degree of cross-linking (hardness) of the surface is increased, the adhesive strength of the surface decreases. In order to increase the degree of cross-linking (hardness) of the surface, when manufacturing a heat dissipation sheet by sandwiching the silicone gel composition between a pair of support sheets, a thin organohydrogenpolysiloxane is applied to the surface of the support sheet. It can be realized by increasing the temperature during subsequent heating and rolling. Alternatively, by laminating another adhesive layer on one surface of the heat dissipation sheet 111, the adhesive property of the other surface can be changed.

  When the heat radiation sheet 111 has high adhesiveness, a known release film is laminated on the heat radiation sheet 111 side in addition to or instead of the surface treatment for the support tape 101 and / or the heat radiation sheet 111. The laminated body 110 may be wound. If it does in this way, when unwinding the above-mentioned 1st condition, ie, layered product 110, unwinding in the state where heat dissipation sheet 111 adhered to only one side of support tape 101 is achieved easily. it can. Therefore, the degree of freedom of design conditions for satisfying the second condition is expanded.

  In the present embodiment, a well-known columnar or cylindrical core can be used as the core 103, and the material thereof is not particularly limited, and may be paper, resin, metal, or the like. Of these, a paper tube is preferable from the viewpoint of low cost and light weight.

  When the heat dissipating sheet laminate 110 is long, the winding body has a large diameter, and it is difficult to stably hold the shape. In such a case, a pair of side plates can be attached to the core body 103, and the laminate 110 can be wound between both side plates. As a material for the side plate, paper, resin, metal, or the like can be used. Moreover, you may use the core body in which the side plate was integrally injection-molded.

[Reference Example 1]
A specific reference example corresponding to the reference embodiment 1 will be described below.

  “Sircon XR-Hb” manufactured by Fuji Polymer Industries Co., Ltd. was used as the heat dissipation sheet. This is achieved by rolling a silicone gel composition containing aluminum oxide fine powder dispersed between two long polyester films (this is referred to as a first film and a second film) while heating. It has been wound up. At this time, organohydrogenpolysiloxane was applied to the surface of the second film on the silicone gel composition side. In addition, the surface of the second film opposite to the silicone gel composition was coated with a fluorine compound and subjected to a release treatment. The heat radiation sheet had a width of 980 mm, a length of 50 m, and a thickness of 0.30 mm.

  While unwinding the wound body of the heat dissipation sheet sandwiched between the two polyester films, after peeling off the first film, only the heat dissipation sheet is cut in the longitudinal direction at intervals of 150 mm in the longitudinal direction (half cut) And then slit in the longitudinal direction to a width of 15 mm. A large number of 15 mm-wide tape-like laminates each having a heat-dissipating sheet adhered to the second film were each wound around a paper tube.

  Then, when the wound body was unwound, it was able to be unwound in a state where the heat radiating sheet was adhered to the surface of the second film on which the mold release treatment was not performed.

  Furthermore, after the part to be adhered was pressure-bonded to the pressure-sensitive adhesive sheet side of the unrolled laminate, the heat radiation sheet having a size of 150 mm × 15 mm could be transferred to the part to be adhered. .

(Reference embodiment 2)
2A is an overall side view showing a state in which a part of the heat dissipation sheet laminate is unwound in the wound body of the heat dissipation sheet laminate according to Reference Embodiment 2, and FIG. The enlarged side view of the part 2B of the heat-radiation sheet laminated body of A) unrolled, FIG.2 (C) is the top view.

  2A to 2C, the same members as those in FIGS. 1A to 1C are denoted by the same reference numerals. The present reference embodiment 2 is different from the reference embodiment 1 in that in this reference embodiment, each heat radiation sheet 121 is adhered with a predetermined gap 123 in the longitudinal direction of the support tape 101. In this way, by separating the heat dissipating sheets 121, it is possible to prevent the occurrence of trouble that the adjacent heat dissipating sheet 121 is peeled off from the support tape 101 when the heat dissipating sheet 121 is transferred to the adherend. And more stable automatic operation of transfer work can be realized.

  In this reference embodiment, each heat dissipation sheet 121 is substantially rectangular, but the present invention is not limited to such a shape, and any shape (for example, round, Star, polygon). Such a shape can be obtained by punching only the heat radiating sheet using a punching die having a predetermined shape.

  Except for the above, the description of Reference Embodiment 1 can be applied to this Reference Embodiment as it is.

[Reference Example 2]
A specific reference example corresponding to the reference embodiment 2 will be described below.

  In the same manner as in Reference Example 1, a wound body of a heat radiating sheet sandwiched between two polyester films was obtained.

  Using a punching die in which two linear punching blades are arranged in parallel with a distance of 10 mm after peeling off the first film while unwinding a heat dissipation sheet sandwiched between two polyester films from this wound body Then, punching was performed every 140 mm on only the heat radiating sheet, and a part of the heat radiating sheet was removed with a width of 10 mm in a direction substantially orthogonal to the longitudinal direction. Then, it slit to 15 mm width in the longitudinal direction. A large number of 15 mm-wide tape-like laminates each having a heat-dissipating sheet adhered to the second film were each wound around a paper tube.

  Then, when the wound body was unwound, it was able to be unwound in a state where the heat radiating sheet was adhered to the surface of the second film on which the mold release treatment was not performed.

  Furthermore, after the part to be adhered was pressure-bonded to the pressure-sensitive adhesive sheet side of the unrolled laminate, the heat radiation sheet having a size of 140 mm × 15 mm was able to be transferred to the part to be adhered. .

(Embodiment 1)
3 shows a schematic configuration of the heat-dissipating sheet laminate according to Embodiment 1 of the present invention. FIG. 3 (A) is a plan view, and FIG. 3 (B) is a line 3B-3B in FIG. 3 (A). It is sectional drawing seen from the arrow direction.

  3A and 3B, 201 is a long carrier tape, 203 is a double-sided fixing tape, and 211 is a laminated film in which a heat dissipation sheet 217 is adhered to one side of a support film 213. The double-sided fixing tape 203 is provided along the longitudinal direction of the carrier tape 201. The laminated film 211 is held on the carrier tape 201 with the support film 213 side surface adhered to the double-sided fixing tape 203. The laminated film 211 is cut at cutting positions 219 at substantially equal intervals in a direction substantially orthogonal to the longitudinal direction. Here, “cutting” refers to a case where the laminated film 211 is cut until reaching the double-sided fixing tape 203, and a case where a predetermined depth is cut from the surface of the laminated film 211 (half cut). Either may be sufficient. The double-sided fixing tape 203 may be similarly cut (including half cut) at the cutting position 219 or may not be cut.

  In each laminated film 211 cut at the cutting position 219, the area of the support film 213 is larger than the area of the heat dissipation sheet 217. More preferably, as shown in the figure, the support film 213 protrudes from the heat radiation sheet 217 to one side in the width direction of the carrier tape 201 to form an ear 215.

  Such a heat dissipation sheet laminate 210 is wound around the core body with the heat dissipation sheet 217 side inward.

  Here, the heat dissipation sheet 217 is composed of the above-described silicone gel composition. Moreover, the support body film 213 can use one of a pair of support body sheet | seat used in manufacture of the thermal radiation sheet mentioned above.

  As the material of the carrier tape 201, resin or paper can be used.

  The double-sided fixing tape 203 is a tape provided with a pressure-sensitive adhesive or adhesive on both sides. As the adhesive, an acrylic resin, a styrene butadiene copolymer, a silicone resin, or the like can be used. As the adhesive, a hot melt adhesive can be used. Instead of the double-sided fixing tape 203, these pressure-sensitive adhesives or adhesives may be applied on the carrier tape 201 in a strip shape or on the entire surface.

  The pasting work to the to-be-pasted part of the thermal radiation sheet 211 using such a thermal radiation sheet laminated body is performed as follows, for example.

  The adherend is held with the adherend exposed. Next, the heat radiating sheet laminate 210 is unwound from the wound body of the heat radiating sheet laminate 210. Next, the robot arm grips the ear 215 of the support film 213. When the robot arm pulls the ear 215, only one laminated film 211 including the ear 215 is peeled from the double-sided fixing tape 211. At this time, since the laminated film 211 is separated from the adjacent laminated film 211 at the cutting position 219, the adjacent laminated film 211 is not peeled off together. The peeled laminate film 211 is conveyed by the robot arm and is brought into close contact with the surface to be adhered so that the surface of the heat radiation sheet 217 is in contact. Thereafter, when the robot arm pulls the ear 215, the interface between the support film 213 and the heat dissipation sheet 217 is peeled off, and only the support film 213 is removed, and the heat dissipation sheet 217 is transferred to the adherend. Such an operation is performed by sequentially unwinding the heat-dissipating sheet laminate 210, winding the carrier tape 201 sequentially, and sequentially transporting a large number of adherends, thereby automatically attaching the heat-dissipating sheet 217. Can be done.

  In order to stably perform the automatic pasting operation of the heat dissipation sheet 217 as described above, it is preferable that the following conditions are satisfied.

  First, when the heat radiating sheet laminate 210 is unwound from the wound body of the heat radiating sheet laminate 210, the support film 213 is always adhered to the fixing tape 203 on the carrier tape 201, and the heat radiating sheet 217 is supported. It is preferable that the film is unwound on the body film 213 while being adhered. For this purpose, the adhesive force between the heat dissipation sheet 217 and the carrier tape 201 is such that the adhesive force between the support film 213 and the fixing tape 203, the adhesive force between the fixing tape 203 and the carrier tape 201, and It is preferable that it is smaller than any of the adhesive forces between the heat radiation sheet 217 and the support film 213.

  Secondly, it is preferable that the heat dissipation sheet 217 is always transferred to the adherend portion side when the heat dissipation sheet 217 of the laminate film 211 is brought into close contact with the adherend portion and then separated. For this purpose, it is preferable that the adhesive force between the heat radiation sheet 217 and the part to be adhered is larger than the adhesive force between the heat radiation sheet 217 and the support film 213.

  Third, when the laminated film 211 is separated from the carrier tape 201, it is preferable that the fixing tape 203 and the adhesive (or adhesive) thereof remain on the carrier tape 201 side without adhering to the support film 213. For this purpose, the adhesive force between the support film 213 and the fixing tape 203 is preferably smaller than the adhesive force between the carrier tape 201 and the fixing tape 203.

  It is preferable to perform surface treatment on at least one of the support film 213, the carrier tape 201, and the heat dissipation sheet 217 so as to satisfy the first to third conditions. Moreover, it is preferable to adjust the adhesive force of the double-sided fixing tape 203.

  As the surface treatment for the support film 213, for example, a mold release treatment can be performed. By performing the mold release process, the adhesive force of the heat dissipation sheet 217 can be reduced. Further, when the laminated film 211 is separated from the carrier tape 201, it can be peeled between the fixing tape 203 and the support film 213. Examples of the mold release treatment include a method in which a fluorine compound, a silicone compound, an acrylic resin, a melamine resin, or the like is applied, or the surface is roughened with fine irregularities. When the surface of the support film 213 is roughened, if the surface unevenness is too large, the heat dissipation sheet 217 is moved to the support film 213 side when the heat dissipation sheet 217 is transferred from the support film 213 to the application portion. Be careful as some may remain. An uneven surface of about 5 to 150 μm is preferable. Further, the mold release treatment may be performed only on one side of the support film 213 or may be performed on both sides. At this time, the type and degree of the release processing on both sides may be changed.

  As the surface treatment for the carrier tape 201, for example, a release treatment similar to the surface treatment for the support film 213 can be performed. In particular, by releasing the surface opposite to the surface to which the fixing tape 203 is attached, the heat dissipation sheet 217 is unwound after the heat dissipation sheet laminate 210 is wound and unwound. Can be easily peeled off. When the surface is roughened by imparting fine irregularities to the surface as a mold release treatment, when the surface irregularities are too large, a part of the heat dissipation sheet 217 may remain on the carrier tape 201 side when unwinding from the wound body. Because there is, attention is necessary. An uneven surface of about 5 to 150 μm is preferable.

  As the surface treatment for the heat radiation sheet 217, for example, there is a method of increasing the degree of cross-linking (that is, hardness) of the surface. When the degree of cross-linking (hardness) of the surface is increased, the adhesive strength of the surface decreases. In order to increase the degree of cross-linking (hardness) of the surface, when manufacturing a heat dissipation sheet by sandwiching the silicone gel composition between a pair of support sheets, a thin organohydrogenpolysiloxane is applied to the surface of the support sheet. It can be realized by increasing the temperature during subsequent heating and rolling. Alternatively, by laminating another adhesive layer on one surface of the heat dissipation sheet 111, the adhesive property of the other surface can be changed.

  The adhesive strength of the double-sided fixing tape 203 can be adjusted by a known means, for example, by changing the type and composition of the adhesive (or adhesive). Further, the adhesive force (or adhesive force) may be changed between the front and back surfaces of the double-sided fixing tape 203.

  When the adhesiveness of the heat radiation sheet 217 is large, in addition to or in place of the surface treatment of the support film 213, the carrier tape 201, and the heat radiation sheet 217, and the adhesive force of the double-sided fixing tape 203, The heat radiation sheet laminate 210 may be wound by laminating a known release film on the heat radiation sheet 217 side. If it does in this way, it can achieve easily said 1st condition, ie, unwinding from a wound body in the state where heat dissipation sheet 217 and carrier tape 201 separated. Therefore, the degree of freedom of design conditions for satisfying the second and third conditions is increased.

  In this Embodiment, the ear | edge part 215 is continuously formed in any one side like FIG. 3 (A) in the width direction of the thermal radiation sheet laminated body 210, or is formed continuously on both sides. It is preferable. Thereby, automation of the operation | work which hold | grips the ear | edge part 215 and peels the laminated | multilayer film 211 becomes easy.

  Moreover, the size of the ear | edge part 215, ie, the protrusion amount from the edge of the heat-radiation sheet | seat 217, a minimum is 5 mm or more, Furthermore, 7 mm or more is preferable, and an upper limit is 15 mm or less, Furthermore, 10 mm or less is preferable. If the amount of protrusion is smaller than this, the gripping characteristics of the robot arm will deteriorate. On the other hand, if the amount of protrusion is larger than this, the amount of heat-dissipating sheet that is required to form the ears increases, which increases costs.

  Further, a symbol or the like may be printed on the ear portion 215 as necessary, or a hole or a notch may be formed. By providing such printing, holes, and notches, the optical sensor or the image recognition device of the machine that peels the laminated film 211 can easily recognize the ears 215. Further, by providing the hole, the gripping part of the machine that peels the laminated film 211 can be engaged with the hole, so that the ear part 215 can be securely gripped. Printing may be appropriately changed according to the purpose, but may be a symbol such as a round shape, a polygonal shape, or a star shape, or may be a barcode. Further, the printing color may be changed as appropriate. The shape of the hole may be appropriately changed according to the purpose, but may be any of a round shape, a polygonal shape, a star shape, and the like.

  In the present embodiment, as the core for winding the heat-dissipating sheet laminate 210, a well-known columnar or cylindrical core can be used, and the material is not particularly limited, and paper, resin, metal, etc. It may be. Of these, a paper tube is preferable from the viewpoint of low cost and light weight.

  When the heat dissipating sheet laminate 210 is long, the winding body has a large diameter, and it is difficult to stably hold the shape. This is especially true when the thickness is not uniform in the width direction as in this embodiment. In such a case, a pair of side plates can be attached to the core body, and the laminate 210 can be wound between both side plates. As a material for the side plate, paper, resin, metal, or the like can be used. Moreover, you may use the core body in which the side plate was integrally injection-molded.

  In the present embodiment, each heat radiation sheet 217 is only cut at the cutting position 219, but may be separated from each other in the longitudinal direction as shown in the reference embodiment 2. Due to the separation, the same effect as described in the second embodiment is obtained.

  Moreover, although each heat-radiation sheet | seat 217 is substantially rectangular shape, this invention is not limited to such a shape, Arbitrary shapes (for example, round shape, star shape, polygon) according to the shape of a to-be-adhered part, etc. Can be. Such a shape can be obtained by punching only the heat radiating sheet using a punching die having a predetermined shape.

[Example 1]
A specific example corresponding to the first embodiment will be described below.

  “Sircon XR-Hb” manufactured by Fuji Polymer Industries Co., Ltd. was used as the heat dissipation sheet. This is achieved by rolling a silicone gel composition containing aluminum oxide fine powder dispersed between two long polyester films (this is referred to as a first film and a second film) while heating. It has been wound up. At this time, organohydrogenpolysiloxane was applied to the surface of the second film on the silicone gel composition side. In addition, the surface of the second film opposite to the silicone gel composition was coated with a fluorine compound and subjected to a release treatment. The heat radiation sheet had a width of 980 mm, a length of 50 m, and a thickness of 0.30 mm.

  A 30 mm wide tape was obtained by slitting in the longitudinal direction while unwinding the wound body of the heat dissipation sheet sandwiched between the two polyester films. Next, the first film of the tape was peeled off. Subsequently, only the exposed heat radiating sheet was slit in the longitudinal direction at a position of 10 mm from one end. Next, the 10 mm wide heat radiation sheet was removed from the second film among the heat radiation sheets separated into two in the width direction. Thus, a laminated film in which a 20 mm wide heat radiation sheet was adhered onto a 30 mm wide second film was obtained.

  As the carrier tape, a long polyester film coated with a release treatment agent made of a fluorine compound on one side was used. In parallel with the production of the above laminated film, the long polyester film is slit in the longitudinal direction to a width of 30 mm while being unwound from the wound body, and the both sides are opposite to the surface on which the release agent is applied. The adhesive tape was continuously adhered. The center position of the double-sided pressure-sensitive adhesive tape was about 10 mm from one end of a carrier tape having a width of 30 mm.

  Next, the laminated film having the heat-dissipating sheet adhered to the second film and the carrier tape were laminated via a double-sided adhesive tape. Then, only the laminated film consisting of the heat dissipation sheet and the second film was cut in the width direction at intervals of 20 mm in the longitudinal direction using a super cutter. And this was wound up so that the heat radiating sheet side might become inner side to the core body to which the side plate whose inner dimension is about 30 mm was given.

  Thereafter, when the wound body was unwound, the heat radiating sheet laminate in which the second film and the heat radiating sheet were sequentially laminated on the carrier tape via the double-sided adhesive tape could be unwound. At this time, the heat radiating sheet did not stick to the carrier tape side and was unwound. Moreover, the 2nd film protruded by the width of 10 mm on the one side of the heat-radiation sheet in the width direction, and formed the ear | edge part.

  When the robot arm was made to grip the ear portion, the film was peeled between the second film and the double-sided adhesive tape, and a laminated film in which a heat radiation sheet of 20 mm × 20 mm was laminated on the second film could be taken out. When the second film was removed by adhering this to the part to be adhered so that the heat radiating sheet side was in contact, the heat radiating sheet could be transferred to the part to be adhered.

(Embodiment 2)
4: has shown schematic structure of the thermal radiation sheet laminated body which concerns on Embodiment 2 of this invention, FIG. 4 (A) is a top view, FIG.4 (B) is the 4B-4B line | wire of FIG. 4 (A). It is sectional drawing seen from the arrow direction.

  4A and 4B, the same members as those in FIGS. 3A and 3B are denoted by the same reference numerals. The heat dissipation sheet laminate 220 of the second exemplary embodiment is different from the heat dissipation sheet laminate 210 of the first exemplary embodiment in the present exemplary embodiment in which a film is attached to the ear portion 215 of the support film 213 via the adhesive tape 223. 221 is connected. The adhesive tape 223 and the film 221 are cut at the cutting position 219 in the same manner as the laminated film 211 including the heat radiation sheet 217 and the support film 213.

  Thus, by connecting the film 221 to the ear part 215, the area of the ear part is substantially enlarged. Therefore, when the heat radiation sheet 217 is automatically attached, the machine can grip the film 221 having a large area, and the gripping operation is stabilized. Further, as is clear from the first embodiment, in order to form the ear portion 215, it is necessary to remove the heat dissipation sheet. By connecting the film 221 to the ear 215, the area of the ear 215 can be reduced, so that the amount of the heat radiation sheet that is removed and discarded can be reduced.

  The material of the film 221 is not particularly limited, and resin or paper can be used. At this time, the material of the support film 213 may be different or the same.

  The film 221 may be colored in a different color from the support film 213. The film 221 can be easily recognized by an optical sensor or an image recognition device of a machine that peels the laminated film 211 by coloring. Further, the film 221 may be printed with a symbol or the like similar to that applied to the ear portion 215 in Embodiment 1, or may be formed with a hole, a notch, or the like. As a result, the same effects as described in the first embodiment can be obtained.

  The lower limit of the size of the film 221, that is, the amount of addition from the edge of the ear 215 is preferably 10 mm or more, more preferably 20 mm or more, and the upper limit is preferably 50 mm or less, more preferably 40 mm or less. If the amount of addition is smaller than this, the effect of connecting the film 221 is reduced, and the cost is increased. If the amount of addition is larger than this, the handleability of the heat dissipation sheet laminate 220 will be reduced.

  As a method for connecting the film 221 to the support film 213, a method using an adhesive or a pressure sensitive adhesive can be used in addition to the method using the adhesive tape 223 as illustrated.

  Except for the above, the description of Embodiment 1 can be applied to this embodiment as it is.

[Example 2]
A specific example corresponding to the second embodiment will be described below.

  In the same manner as in Example 1, a wound body of the heat radiation sheet sandwiched between the first and second polyester films was obtained. Further, in the same manner as in Example 1, a laminated film in which a 20 mm wide heat radiation sheet was adhered onto a 30 mm wide second film was obtained. Connected to the end of the second film protruding from the heat dissipation sheet of the laminated film as shown in FIGS. 4A and 4B using a 20 mm wide paper tape and an adhesive tape with an adhesive applied on one side. did.

  In parallel with this, as in Example 1, a double-sided pressure-sensitive adhesive tape was continuously adhered to one side of the polyester film having a width of 30 mm as a carrier tape by slitting.

  Next, the laminated film having the heat-dissipating sheet adhered to the second film and the carrier tape were laminated via a double-sided adhesive tape. Next, using a super cutter, only the laminated film composed of the heat dissipation sheet and the second film, the paper tape having a width of 20 mm, and the adhesive tape connecting the paper tape and the second film were cut in the width direction at intervals of 20 mm in the longitudinal direction. And this was wound up so that the heat radiating sheet side might become the inner side to the core body to which the side plate having an inner dimension of about 50 mm was applied.

  Thereafter, when the wound body is unwound, the second film and the heat radiation sheet are sequentially laminated on the carrier tape via the double-sided adhesive tape, and the heat radiation sheet laminate in which the paper tape is connected to the second film is unwound. I was able to. At this time, the heat radiating sheet did not stick to the carrier tape side and was unwound. Moreover, the 2nd film protruded in the width direction from the one side of the heat-radiation sheet by 10 mm width, and the paper tape of 20 mm width was connected with the adhesive tape by the edge part, and the ear | edge part was formed.

  When the robot arm was made to grip the ear portion, the film was peeled between the second film and the double-sided adhesive tape, and a laminated film in which a heat radiation sheet of 20 mm × 20 mm was laminated on the second film could be taken out. When the second film was removed by adhering this to the part to be adhered so that the heat radiating sheet side was in contact, the heat radiating sheet could be transferred to the part to be adhered.

(Embodiment 3)
5: has shown schematic structure of the thermal radiation sheet laminated body which concerns on Embodiment 3 of this invention, FIG. 5 (A) is a top view, FIG.5 (B) is the 5B-5B line | wire of FIG. 5 (A). It is sectional drawing seen from the arrow direction.

  5A and 5B, the same members as those in FIGS. 3A and 3B are denoted by the same reference numerals. The heat dissipating sheet laminate 230 of the third embodiment is different from the heat dissipating sheet laminate 210 of the first embodiment in that two laminated films made of a heat dissipating sheet and a support film are provided on the carrier tape 201 in the width direction. It is the point arranged side by side.

  That is, the double-sided fixing tapes 203a and 203b are spaced apart from each other on the carrier tape 201 in the longitudinal direction. On the double-sided fixing tape 203a, a support film 213a and a heat radiation sheet 217a are adhered and laminated in this order. Similarly, a support film 213b and a heat radiation sheet 217b are adhered and laminated in this order on the double-sided fixing tape 203b.

  The support film 213a protrudes from the heat radiation sheet 217a in the right direction on the paper surface to form an ear 215a. Further, the support film 213b protrudes from the heat radiation sheet 217b in the left direction of the drawing to form an ear portion 215b.

  The laminated film 211a composed of the support film 213a and the heat dissipation sheet 217a and the laminated film 211b composed of the support film 213b and the heat dissipation sheet 217b are cut at the cutting position 231. The cutting position 231 is provided parallel to the longitudinal direction of the carrier tape 201 at a position between the double-sided fixing tape 203a and the double-sided fixing tape 203b. The laminated film 211a and the laminated film 211b are cut at substantially equal intervals in a direction substantially perpendicular to the longitudinal direction at a common cutting position 219.

  By changing the cutting position 231 in the width direction of the heat radiating sheet laminate 230, the size (shape) of the heat radiating sheet 217a and the heat radiating sheet 217b arranged in the width direction can be made different.

  Further, the thickness of the heat dissipation sheet 217a and the thickness of the heat dissipation sheet 217b may be the same or different.

  According to the present embodiment, a plurality of heat radiation sheets having different sizes (shapes) and a plurality of heat radiation sheets having different thicknesses can be arranged in the width direction on the carrier tape 201. Accordingly, when performing a work of attaching different types of heat radiation sheets to a plurality of adherends, if the heat radiation sheet laminate 230 of the present invention is used, a wound body of one heat radiation sheet laminate 230 is prepared. Therefore, the pasting work can be performed efficiently.

  In the present embodiment, the laminated film 211a and the laminated film 211b are cut at a common cutting position 219, and as a result, the longitudinal dimensions of the heat radiation sheet 217a and the heat radiation sheet 217b are the same. . However, the present invention is not limited to this. For example, the heat-radiating sheet 217a and the heat-dissipating sheet 217b are punched by using punching dies having different shapes, so that the heat-dissipating sheet 217a and the heat-dissipating sheet 217b can be arbitrarily shaped (for example, Round, star, polygon).

  Moreover, in this Embodiment, although the two laminated | multilayer film which consist of a thermal radiation sheet and a support body film are arranged in the width direction of the carrier tape 201, this may be 3 or more. However, in each row of laminated films (herein, “row” refers to the arrangement in the longitudinal direction of the carrier tape 201), the ear portion is in the longitudinal direction on either side (or on both sides) in the width direction. It is preferable from the viewpoint of performing automatic pasting work by a machine.

  In addition, another film 221 shown in Embodiment Mode 2 may be connected to the ear portion of the support film.

  Except for the above, the description of Embodiment 1 can be applied to this embodiment as it is.

[Example 3]
A specific example corresponding to the third embodiment will be described below.

  In the same manner as in Example 1, a wound body of the heat radiation sheet sandwiched between the first and second polyester films was obtained.

  A tape having a width of 50 mm was obtained by slitting in the longitudinal direction while unwinding the wound body of the heat dissipation sheet sandwiched between the two polyester films. Next, the first film of the tape was peeled off. Subsequently, only the exposed heat radiation sheet was slit in the longitudinal direction at positions of 10 mm from both ends. Next, among the heat dissipating sheets separated into three in the width direction, 10 mm wide heat dissipating sheets on both sides were removed from the second film. Thus, a laminated film having a 30 mm wide heat radiation sheet adhered to the center of the 50 mm wide second film was obtained.

  As the carrier tape, a long polyester film coated with a release treatment agent made of a fluorine compound on one side was used. In parallel with the production of the laminated film, the long polyester film is slit in the longitudinal direction to a width of 50 mm while being unwound from the wound body, and the surface opposite to the surface on which the release agent is applied is 2 The double-sided adhesive tape of the book was continuously adhered substantially in parallel. The center positions of the two double-sided pressure-sensitive adhesive tapes were points of about 15 mm from both ends of the carrier tape having a width of 50 mm.

  Next, the laminated film having the heat-dissipating sheet adhered to the second film and the carrier tape were laminated via a double-sided adhesive tape. Next, only the laminated film composed of the heat dissipation sheet and the second film was cut in the longitudinal direction at a position 20 mm from one end using a cutter. Then, only the laminated film consisting of the heat dissipation sheet and the second film was cut in the width direction at intervals of 20 mm in the longitudinal direction using a super cutter. And this was wound up so that the heat radiating sheet side might become the inner side to the core body to which the side plate having an inner dimension of about 50 mm was applied.

  Thereafter, when the wound body was unwound, the heat radiating sheet laminate in which the second film and the heat radiating sheet were sequentially laminated on the carrier tape via the double-sided adhesive tape could be unwound. At this time, the heat radiating sheet did not stick to the carrier tape side and was unwound. Moreover, the 2nd film protruded by the width of 10 mm on the both sides of the heat radiating sheet in the width direction, and formed the ear | edge part.

  When the robot arm is gripped by the ear on one side in the width direction, it is peeled off between the second film and the double-sided adhesive tape, and a heat radiation sheet of 20 mm × 20 mm is laminated on the second film The film could be removed. Similarly, when another robot arm is gripped by the ear on the other side in the width direction, it peels between the second film and the double-sided adhesive tape, and a 20 mm × 10 mm heat radiation sheet is formed on the second film. Was able to be taken out. When the second film was removed by adhering these to different parts to be adhered so that the heat radiating sheet side was in contact with each other, the heat radiating sheet could be transferred to the part to be adhered.

[Example 4]
Another example corresponding to the third embodiment will be described below.

  As the heat-dissipating sheet, “Sircon XR-Hb” manufactured by Fuji Polymer Industries Co., Ltd., similar to Example 1, was used. However, in this example, a first heat radiating sheet having a thickness of 0.30 mm and a second heat radiating sheet having a thickness of 0.20 mm were prepared. These are all rolled by rolling a silicone gel composition containing aluminum oxide fine powder dispersed between two long polyester films (this is referred to as a first film and a second film). And wound up. At this time, organohydrogenpolysiloxane was applied to the surface of the second film on the silicone gel composition side. In addition, the surface of the second film opposite to the silicone gel composition was coated with a fluorine compound and subjected to a release treatment. Each heat dissipation sheet had a width of 980 mm and a length of 50 m.

  A 30 mm wide tape was obtained by slitting in the longitudinal direction while unwinding the wound body of the first heat radiation sheet sandwiched between the two polyester films. Similarly, a 20 mm wide tape was obtained by slitting in the longitudinal direction while unwinding the wound body of the second heat radiation sheet sandwiched between two polyester films. Next, the first film laminated on each of the first and second heat dissipation sheets was peeled off. Next, only the exposed first and second heat radiation sheets were slit in the longitudinal direction at a position 10 mm from one end. Next, the 10 mm wide heat radiation sheet was removed from the second film among the heat radiation sheets separated into two in the width direction. Thus, a laminated film in which a first heat-dissipating sheet having a width of 20 mm and a thickness of 0.30 mm is adhered to a second film having a width of 30 mm, and a thickness of 0.20 mm having a thickness of 10 mm on the second film having a width of 20 mm. A laminated film to which the second heat radiating sheet was adhered was obtained.

  In parallel with this, in the same manner as in Example 3, while slitting a 50 mm wide polyester film as a carrier tape, two double-sided adhesive tapes were continuously adhered to one side in two strips.

  Next, the laminated film in which the first heat-dissipating sheet having a thickness of 0.30 mm is adhered on one double-sided adhesive tape on the carrier tape, and the second heat-dissipating sheet having a thickness of 0.20 mm on the other double-sided adhesive tape. Each of the laminated films adhered to was adhered. At this time, it laminated | stacked so that the ear | edge part of both laminated | multilayer film might become the end side of a carrier tape. Then, only the laminated film consisting of the heat dissipation sheet and the second film was cut in the width direction at intervals of 20 mm in the longitudinal direction using a super cutter. And this was wound up so that the heat radiating sheet side might become the inner side to the core body to which the side plate having an inner dimension of about 50 mm was applied.

  Thereafter, when the wound body was unwound, the heat radiating sheet laminate in which the second film and the heat radiating sheet were sequentially laminated on the carrier tape via the double-sided adhesive tape could be unwound. At this time, the heat radiating sheet did not stick to the carrier tape side and was unwound. Moreover, the 2nd film protruded by the width of 10 mm on the both sides of the heat radiating sheet in the width direction, and formed the ear | edge part.

  When the robot arm was made to grip the ear on one side in the width direction, it peeled off between the second film and the double-sided adhesive tape, and the thickness was 20 mm × 20 mm and the thickness was 0.30 mm on the second film. The laminated film on which the first heat radiation sheet was laminated could be taken out. Similarly, when an ear on the other side in the width direction is gripped by another robot arm, it peels between the second film and the double-sided adhesive tape, and the thickness is 20 mm × 10 mm on the second film. Was able to take out the laminated film on which the second heat radiation sheet having a thickness of 0.20 mm was laminated. When the second film was removed by adhering these to different parts to be adhered so that the heat radiating sheet side was in contact with each other, the heat radiating sheet could be transferred to the part to be adhered.

1A is an overall side view showing a state in which a part of the heat-dissipating sheet laminate is unwound in the wound body of the heat-dissipating sheet laminate according to Reference Embodiment 1, and FIG. The enlarged side view of the part 1B of the heat-radiation sheet laminated body of A) unrolled, FIG.1 (C) is the top view. 2A is an overall side view showing a state in which a part of the heat dissipation sheet laminate is unwound in the wound body of the heat dissipation sheet laminate according to Reference Embodiment 2, and FIG. The enlarged side view of the part 2B of the heat-radiation sheet laminated body of A) unrolled, FIG.2 (C) is the top view. 3 shows a schematic configuration of the heat-dissipating sheet laminate according to Embodiment 1 of the present invention. FIG. 3 (A) is a plan view, and FIG. 3 (B) is a line 3B-3B in FIG. 3 (A). It is sectional drawing seen from the arrow direction. 4: has shown schematic structure of the thermal radiation sheet laminated body which concerns on Embodiment 2 of this invention, FIG. 4 (A) is a top view, FIG.4 (B) is the 4B-4B line | wire of FIG. 4 (A). It is sectional drawing seen from the arrow direction. 5: has shown schematic structure of the thermal radiation sheet laminated body which concerns on Embodiment 3 of this invention, FIG. 5 (A) is a top view, FIG.5 (B) is the 5B-5B line | wire of FIG. 5 (A). It is sectional drawing seen from the arrow direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Support tape 103 Core body 110 Heat radiation sheet laminated body 111 Heat radiation sheet 113 Cutting position 121 Heat radiation sheet 123 Crevice 201 Carrier tape 203, 203a, 203b Double-sided fixing tape 210 Heat radiation sheet laminated body 211, 211a, 211b Laminated film 213, 213a, 213b Support film 215, 215a, 215b Ear part 217, 217a, 217b Heat radiation sheet 219 Cutting position 220 Heat radiation sheet laminated body 221 Film 223 Adhesive tape 230 Heat radiation sheet laminated body 231 Cutting position

Claims (21)

A plurality of laminated films formed by adhering a heat dissipation sheet made of a silicone gel composition to a support film; and
With a long carrier tape,
The area of the support film is larger than the area of the heat dissipation sheet, and the support film protrudes from the heat dissipation sheet to form an ear part,
The plurality of laminated films are arranged in at least the longitudinal direction of the carrier tape, and are adhered to the carrier tape on the support film side ,
The heat dissipation sheet laminate is characterized in that the surface of the heat dissipation sheet on the side of the support film is harder than the surface on the opposite side .   2. The heat radiation sheet laminate according to claim 1, wherein in each of the laminated films on the same row in the longitudinal direction of the carrier tape, the ear portion is disposed on the same side in the width direction of the carrier tape with respect to the heat radiation sheet. body.   The heat dissipation sheet laminate according to claim 1, wherein two or more laminated films are arranged side by side in the width direction of the carrier tape. Two of the laminated films are arranged side by side in the width direction of the carrier tape,
The heat dissipation sheet laminate according to claim 1, wherein in each of the two laminated films arranged side by side in the width direction, each of the ears is arranged along an end in the width direction of the carrier tape.   The heat-radiation sheet laminated body according to claim 3, wherein the heat-radiation sheets constituting the two or more laminated films arranged side by side in the width direction are different in shape or thickness.   The heat radiating sheet laminate according to claim 1, wherein a hole or a notch is formed in the ear portion or printing is performed.   The heat dissipation sheet laminate according to claim 1, wherein a film different from the support film is connected to the ear portion.   The heat radiating sheet laminate according to claim 7, wherein a hole or a notch is formed or printed on the other film.   The heat dissipating sheet laminate according to claim 7, wherein the another film is colored.   The heat dissipation sheet laminate according to claim 1, wherein the carrier tape is paper or a resin film.   The adhesive force between the surface of the carrier tape opposite to the surface to which the support film is adhered and the surface of the heat dissipation sheet opposite to the surface to be adhered to the support film is the heat dissipation. The heat-radiation sheet laminated body of Claim 1 smaller than the adhesive force between a sheet | seat and the said support body film.   The adhesive force between the surface of the carrier tape opposite to the surface to which the support film is adhered and the surface of the heat dissipation sheet opposite to the surface to be adhered to the support film is the support The heat-radiation sheet laminated body of Claim 1 smaller than the adhesive force between a body film and the said carrier tape.   The heat-radiation sheet laminated body of Claim 1 by which the mold release process is performed to the surface on the opposite side to the surface to which the said support body film of the said carrier tape was adhere | attached.   The heat radiating sheet laminate according to claim 1, wherein the support film and the carrier tape are adhered via an adhesive. The heat-dissipating sheet laminate according to claim 14 , wherein the adhesive force of the adhesive to the carrier tape is greater than the adhesive force of the adhesive to the support film. The wound body of the heat-radiation sheet laminated body in which the heat-radiation sheet laminated body in any one of Claims 1-15 is wound. When unrolled the heat dissipation sheet stack from the winding body, the support film and said carrier tape is adhesive, and the heat radiating sheet to claim 16 unwound while sticking to the support film A wound body of the heat dissipation sheet laminate described. The wound body of the heat-radiation sheet laminated body of Claim 16 currently wound with the release tape by which the surface was release-processed. The heat radiating sheet laminate includes a core body having a cylindrical surface, according to claim 16 which is wound on a reel comprising a pair of side plates mounted above the core so as to be substantially parallel spaced apart Winding body of heat dissipation sheet laminate. A step of unwinding the heat dissipation sheet laminate from a wound body of the heat dissipation sheet laminate according to any one of claims 16 to 19 ,
Gripping the ears and peeling the laminated film from the carrier tape;
And a step of transferring the heat-dissipating sheet to the adherend part side by bringing the heat dissipating sheet of the laminated film peeled into close contact with the adherend part surface. 21. The method for attaching a heat dissipation sheet according to claim 20 , wherein the adhesive force between the heat dissipation sheet and the support film is smaller than the adhesive force between the heat dissipation sheet and the surface of the adherend. .

Images