WO2022264883A1 - シート貼付装置およびシート貼付方法 - Google Patents
シート貼付装置およびシート貼付方法 Download PDFInfo
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- WO2022264883A1 WO2022264883A1 PCT/JP2022/022962 JP2022022962W WO2022264883A1 WO 2022264883 A1 WO2022264883 A1 WO 2022264883A1 JP 2022022962 W JP2022022962 W JP 2022022962W WO 2022264883 A1 WO2022264883 A1 WO 2022264883A1
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- WIPO (PCT)
- Prior art keywords
- sheet
- adherend
- peeling
- adhesive sheet
- release sheet
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 8
- 239000000853 adhesive Substances 0.000 claims abstract description 60
- 230000001070 adhesive effect Effects 0.000 claims abstract description 60
- 238000003825 pressing Methods 0.000 claims abstract description 28
- 239000004744 fabric Substances 0.000 claims description 19
- 238000012795 verification Methods 0.000 description 11
- 239000010410 layer Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 239000004065 semiconductor Substances 0.000 description 7
- 235000012431 wafers Nutrition 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000012790 adhesive layer Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 230000006837 decompression Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
Definitions
- the present invention relates to a sheet sticking device and a sheet sticking method.
- Patent Document 1 A sheet sticking device that sticks an adhesive sheet to an adherend is known (see Patent Document 1, for example).
- the protective sheet 5 may It was found that slack in the release sheet (see the number "SC" in attached FIG. 1(C) in this specification) is formed at the tip (folded portion) of the release unit 18 that folds the release sheet. When such slack is formed in the release sheet and the slack portion comes into contact with the adherend, a problem occurs that fine scratches are formed on the adherend. Such a problem is conspicuous in a sheet sticking apparatus under the condition that slack is formed in the release sheet at the folded portion during automatic operation for automatically sticking the adhesive sheet to the adherend.
- the present invention employs the configuration described in the claims.
- the shortest distance between the folded portion and the attaching plane is the sum of the thickness of the release sheet and the allowable slack interval, and the allowable slack interval is set to 0.1 mm or more and 30 mm or less. Therefore, even if the release sheet is slackened at the folded portion, it is possible to prevent the slackened portion from coming into contact with the adherend.
- FIG. 1 is an explanatory diagram of a sheet sticking device according to an embodiment of the present invention and an explanatory diagram of operation of the same device;
- the sheet sticking apparatus EA of the present invention comprises feeding means 10 for feeding out the original sheet RS with the adhesive sheet AS temporarily adhered to the release sheet RL, and the release sheet RL of the original sheet RS fed out by the feeding means 10.
- the peeling means 20 for performing the peeling step of peeling the adhesive sheet AS from the peeling sheet RL by folding back at the folded portion 21A, and the adherend surface WK1 of the adherend WK are positioned within the predetermined sticking plane SS, and the folded portion 21A is placed.
- pressing means 30 for performing a pressing step of pressing and attaching the adhesive sheet AS peeled by the peeling means 20 to the adherend surface WK1 of the adherend WK that moves relative to the adherend WK.
- the shortest distance MD between the folded portion 21A and the sticking plane SS is the thickness RLt of the release sheet RL plus the allowable slack interval SP, and the allowable slack interval SP is 0.1 mm or more. , 30 mm or less.
- the delivery means 10 is supported by a support roller 11 that supports the original sheet RS, a guide roller 12 that guides the original sheet RS, and an output shaft (not shown) of a rotating motor 13A as a driving device, and is separated by a pinch roller 13B. While the sheet sticking apparatus EA is automatically operated, the peeling sheet RL present between the pinch roller 13B and the driving roller 13 for sandwiching the sheet RL is supported by the output shaft of a driving device (not shown).
- a recovery roller 14 is provided as recovery means for applying tension and recovering the release sheet RL.
- the peeling means 20 includes a peeling plate 21 having a folded portion 21A for folding back the peeling sheet RL.
- the pressing means 30 includes a pressing roller 31 having an elastically deformable pressing surface 31A.
- a plane parallel to the XY plane where the lowest part of the pressing surface 31A is located in the no-load state is the sticking plane SS.
- the moving means 40 is supported by a slider 41A of a linear motor 41 as a driving device, and includes a support table 42 having a support surface 42A that can be held by suction by a decompression means (holding means) (not shown) such as a decompression pump or a vacuum ejector. ing.
- a decompression means holding means
- the support table 42 of the present embodiment is designed so that the adherend surface WK1 of the adherend WK is positioned within the bonding plane SS in consideration of the thickness of the adherend WK (dimension in the Z-axis direction).
- Surface position adjusting means such as a screw adjusting mechanism for adjusting the position of the support surface 42A and a driving device are provided.
- the thickness of the adherend WK is adjusted to be constant, and when the adherend WK is placed on the support surface 42A, the adherend surface WK1 is positioned within the sticking plane SS. , are adjusted in advance by surface position adjustment means (not shown).
- a user of the sheet sticking device EA moves the sheet sticking device EA in which the respective members are arranged at the initial positions indicated by the solid lines in FIG.
- a signal for starting automatic operation is inputted via an operation means (not shown) such as an operation panel or a personal computer.
- the feeding means 10 drives the rotary motor 13A to feed the original sheet RS, and the leading edge of the leading adhesive sheet AS in the feeding direction is separated from the release sheet RL folded back at the folding portion 21A by a predetermined length. , stops driving the rotation motor 13A.
- the moving means 40 drives the decompressing means (not shown), and the support surface 42A.
- the adsorption and holding of the adherend WK is started.
- the moving means 40 drives the linear motor 41 to move the support table 42 leftward, and when the adherend WK reaches a predetermined position with respect to the feeding means 10, the feeding means 10 drives the rotation motor 13A.
- the original fabric RS is delivered in accordance with the moving speed of the adherend WK.
- the adhesive sheet AS is separated from the release sheet RL, and the adhesive sheet AS separated from the release sheet RL is applied to the adherend WK by the pressure roller 31 as indicated by the two-dot chain line in FIG. Affixed by pressing.
- the entire leading adhesive sheet AS is adhered to the adherend WK to form an integral object UP, and the feeding direction leading end of the next adhesive sheet AS following the leading adhesive sheet AS is folded back at the folding portion 21A.
- the feeding means 10 stops driving the rotary motor 13A.
- the moving means 40 stops driving the linear motor 41, and then stops driving the decompression means (not shown), thereby sucking and holding the integrated object UP on the support surface 42A. release.
- the moving means 40 drives the linear motor 41 to return the support table 42 to the initial position, and the same operation as described above is repeated thereafter.
- Example 1 a first raw sheet RS composed of a release sheet RL having a thickness RLt of 0.025 mm and an adhesive sheet AS having a thickness of 0.09 mm was set in the sheet sticking apparatus EA, and A similar automatic operation is performed. During the operation of attaching the 100 adhesive sheets AS to the adherend WK in this automatic operation, the length SD was measured (this measurement is hereinafter referred to as "slackness measurement"), and the length SDMAX of the largest slackness SC was 0.065 mm.
- the allowable slack interval SP is set to 0.1 mm using the first raw sheet RS, and 100 adhesive sheets AS are attached to the adherend WK by automatic operation similar to the above embodiment (hereinafter referred to as this The verification is referred to as "contact verification"), and it was found that the slack SC did not come into contact with the adherend WK.
- Comparative Example 1 when the slack allowable interval SP was set to 0.06 mm using the first raw fabric RS and contact verification was performed, the slack SC contacted the adherend WK.
- Example 2 when the second raw sheet RS composed of a release sheet RL having a thickness RLt of 0.038 mm and an adhesive sheet AS having a thickness of 0.09 mm was used, slack measurement was performed, and the largest slack SC was 0.059 mm. Therefore, when the allowable slack interval SP was set to 0.1 mm using the second raw fabric RS and the contact was verified, the slack SC did not come into contact with the adherend WK. On the other hand, as Comparative Example 2, the allowable slack interval SP was set to 0.05 mm using the second raw fabric RS, and contact verification was performed. As a result, the slack SC contacted the adherend WK.
- Example 3 a third raw sheet RS comprising a release sheet RL having a thickness RLt of 0.05 mm and an adhesive sheet AS having a thickness of 0.125 mm was used, and when slack measurement was performed, the largest slack SC was 0.086 mm. Therefore, when the allowable slack interval SP was set to 0.1 mm using the third material RS and the contact was verified, the slack SC did not come into contact with the adherend WK. On the other hand, as Comparative Example 3, when the allowable slack interval SP was set to 0.08 mm using the third raw fabric RS and contact verification was performed, the slack SC contacted the adherend WK.
- Example 4 a fourth raw sheet RS comprising a release sheet RL having a thickness RLt of 0.075 mm and an adhesive sheet AS having a thickness of 0.125 mm was used, and when slack measurement was performed, the largest slack SC was 0.083 mm. Therefore, when the allowable slack interval SP was set to 0.1 mm using the fourth raw sheet RS and contact verification was performed, the slack SC did not come into contact with the adherend WK. On the other hand, as Comparative Example 4, contact verification was performed using the fourth raw fabric RS with the allowable slack interval SP set to 0.08 mm, and the slack SC contacted the adherend WK.
- Table 1 shows the looseness measurement and contact verification of Examples 1-4
- Table 2 shows the contact verification of Comparative Examples 1-4.
- the allowable slack interval SP was set to 0.3 mm, 5 mm, 10 mm, and 30 mm, and contact verification was performed using the first to fourth original fabrics RS. never did. From the above, it has been found that the shortest distance MD is set to a distance obtained by adding 0.1 mm or more as the allowable slack interval SP to the thickness RLt of the release sheet RL, thereby preventing the slack SC from coming into contact with the adherend WK.
- the adhesive sheet AS is attached to the adherend WK in a state in which the bent BP is formed, or the adhesive sheet AS is applied to the pressure roller 31 as shown by two-dot chain lines in FIGS. It has been found that the sticking failure occurs such that the adhesive sticks to the adherend WK and is not stuck to the adherend WK. Therefore, using the above-described first to fourth raw fabrics RS, contact verification was performed while increasing the allowable slack interval SP from 30 mm by 1 mm, and the minimum allowable slack interval SP at which adhesion failure occurred was investigated. The results are shown below. shown in Table 3. From the above, it has been found that by setting the allowable slack interval SP to 30 mm or less, it is possible to prevent the adhesion failure of the adhesive sheet AS from occurring.
- the shortest distance MD between the folded portion 21A and the sticking plane SS is the sum of the thickness RLt of the release sheet RL and the allowable slack interval SP, and the allowable slack interval SP is 0. Since the thickness is set to 1 mm or more and 30 mm or less, even if slack SC is formed in the release sheet RL at the folded portion 21A, the slack SC portion can be prevented from coming into contact with the adherend WK.
- the feeding means may be of any type as long as it can feed the original sheet with the adhesive sheet temporarily attached to the release sheet, and is within the technical scope in light of the common general knowledge at the time of filing. It is not limited (other means and steps are the same).
- the feed-out means 10 is formed by forming a closed loop shape or a notch in the entire short width direction in the band-shaped adhesive sheet base material temporarily attached to the release sheet RL, so that a predetermined area partitioned by the notch is adhered. It is also possible to feed the original fabric RS as the sheet AS, or adopt a strip-shaped adhesive sheet fabric in which a strip-shaped adhesive sheet base material is temporarily attached to the release sheet RL, and in the course of feeding the strip-shaped adhesive sheet fabric, A cut in the adhesive sheet base material in a closed loop shape or in the entire short width direction is formed by a cutting blade as a cutting means, and a predetermined area partitioned by the cut is formed into an adhesive sheet AS, and the raw fabric RS is fed out.
- the original fabric RS with the band-shaped adhesive sheet AS temporarily attached to the release sheet RL may be fed out, or the original fabric RS may be fan-folded without being wound.
- a recovery means may be employed to recover the release sheet RL by, for example, fan-folding it, chopping it with a shredder or the like, or accumulating it carelessly without winding it. No means should be used.
- the pressing means 30 may be a pressing roller 31 having a pressing surface 31A that cannot be elastically deformed. It may be composed of a roller 31, a plate material, or the like.
- the pressing means 30 is supported by the output shaft of a direct-acting motor as a drive device, and holds the adhesive sheet AS with a holding member capable of being sucked and held by a decompression means (not shown) such as a decompression pump or a vacuum ejector.
- the holding adhesive sheet AS may be pressed and attached to the adherend WK.
- the moving means 40 may position the adherend WK using a driving device that moves the support table 42 in the front-rear direction or a driving device that rotates the support table 42 within the support surface 42A.
- the adherend WK is moved with respect to the pressing means 30 which does not move. may be provided in the sheet sticking apparatus EA of the present invention, or may not be provided. good too.
- a sheet sticking apparatus EA of the present invention uses a semiconductor wafer as an adherend WK, integrates the semiconductor wafer and a ring frame with an adhesive sheet AS, and sticks a protective sheet as an adhesive sheet AS to the semiconductor wafer. It's okay.
- the original sheet RS may be obtained by temporarily attaching an adhesive sheet AS conforming to the shape of a ring claim or the shape of a semiconductor wafer to a release sheet RL.
- the thickness RLt of the release sheet RL in the present invention may be other than 0.025 mm, 0.038 mm, 0.05 mm and 0.075 mm. It may be in the range of 0.001 mm to 3 mm, 0.001 mm or less, 3 mm or more, or any thickness.
- the allowable slack interval SP in the present invention may be other than 0.1 mm, 0.3 mm, 5 mm, 10 mm, and 30 mm. Any interval of 0.1 mm or more and 30 mm or less may be used.
- the position of the sticking plane SS in the present invention may be a plane other than a plane parallel to the XY plane where the lowest part of the pressing surface 31A is located in the unloaded state.
- It may be a plane parallel to the XY plane separated below the position within the thickness RTt of the release sheet RL, or may be, for example, 0.001 mm, 0.5 mm, A plane parallel to the XY plane separated by 3 mm, 10 mm, or 30 mm may be used, and any position where the pressing means 30 can adhere the adhesive sheet AS to the adherend surface WK1 may be used.
- the surface position adjusting means (not shown) may move the adherend WK to position the adherend surface WK1 within the sticking plane SS, or move the pressing means 30 to align the sticking plane SS with the adherend surface WK1.
- an imaging means such as a camera or a projector, an optical sensor, or an ultrasonic sensor may be used.
- At least one of the adherend WK and the pressing means 30 is moved so that the adherend surface WK1 is positioned within the sticking plane SS according to the thickness detected by a thickness detection means composed of various sensors such as a sound wave sensor.
- a thickness detection means composed of various sensors such as a sound wave sensor.
- the support table 42 or the adherend WK reaches a predetermined position below the pressing roller 31, the adherend surface WK1 of the adherend WK is positioned within the sticking plane SS.
- the sheet sticking apparatus EA of the present invention may or may not have it.
- the sticking plane SS does not have to be the lowest position of the pressing surface 31A in the no-load state. Any position based on any member, such as any position such as below or 50 mm below, or a position separated from a prescribed position of another device by a prescribed distance, may be used.
- the material, type, shape, etc. of the adhesive sheet AS, release sheet RL and adherend WK in the present invention are not particularly limited.
- the adhesive sheet AS, the release sheet RL and the adherend WK may be circular, elliptical, polygonal such as triangular or square, or other shapes.
- Adhesive form such as adhesiveness may be used, and when a heat-sensitive adhesive sheet AS is adopted, heating means such as an appropriate coil heater or heat pipe heating side for heating the adhesive sheet AS is used. It may be adhered by an appropriate method such as providing.
- such an adhesive sheet AS includes, for example, a single-layer adhesive layer only, a two-layer adhesive sheet laminated with a base material and an adhesive layer, and one or more layers between the base material and the adhesive layer.
- the adherend WK includes, for example, foods, resin containers, semiconductor wafers such as silicon semiconductor wafers and compound semiconductor wafers, information recording substrates such as circuit boards and optical discs, glass plates, steel plates, pottery, wood plates, resins, and the like.
- the adhesive sheet AS is replaced with a functional and application-reading label, for example, an information label, a decorative label, a protective sheet, a dicing tape, a die attach film, a die bonding tape, a recording layer forming resin Any sheet such as a sheet, a film, a tape, or the like may be used.
- the drive device in the above embodiment includes a rotating motor, a linear motor, a linear motor, a single-axis robot, an electric device such as a multi-joint robot having two or more joints, an air cylinder, a hydraulic cylinder, and a rodless robot.
- Actuators such as cylinders and rotary cylinders can be used, and combinations thereof directly or indirectly can also be used.
- a rotating member such as a roller
- a drive device for rotating the rotating member may be provided, or the surface of the rotating member or the rotating member itself may be made of deformable material such as rubber or resin.
- the surface of the rotating member or the rotating member itself may be composed of a member that does not deform, or other members such as a shaft or a blade that rotates or does not rotate instead of the roller.
- a pressing means such as a pressing roller or a pressing head or a pressing member that presses an object to be pressed
- a roller, a round bar, a blade can be used instead of or in combination with the above examples
- It may be composed of a member that does not deform such as , resin, etc., or if a peeling means such as a peeling plate or a peeling roller or a peeling member such as a peeling member is used, instead of the above examples Alternatively, a member such as a plate-shaped member, a round bar, or a roller may be adopted, and the peelable member may be made of a deformable member such as rubber or resin, or may be made of a non-deformable member. Alternatively, if a supporting (holding) means or a supporting (holding) member or the like that supports (holds) a member to be supported (member to be held) is employed, gripping means such as a mechanical chuck or a chuck cylinder may be used.
- Sheet sticking device 10 Feeding means 20... Peeling means 20A... Folding part 30... Pressing means AS... Adhesive sheet MD... Shortest distance RL... Release sheet RLt... Thickness RS... Original fabric SP... Slack allowable interval SS... Sticking plane WK ... adherend WK1 ... adherend surface
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Abstract
Description
なお、本実施形態におけるX軸、Y軸、Z軸は、それぞれが直交する関係にあり、X軸およびY軸は、所定平面内の軸とし、Z軸は、前記所定平面に直交する軸とする。さらに、本実施形態では、Y軸と平行な図1中手前方向から観た場合を基準とし、図を指定することなく方向を示した場合、「上」がZ軸の矢印方向で「下」がその逆方向、「左」がX軸の矢印方向で「右」がその逆方向、「前」がY軸と平行な図1中手前方向で「後」がその逆方向とする。なお、方向を示す矢印を記載していない図は、全て図1(A)と同じ方向から観た図とする。
なお、シート貼付装置EAは、折返し部21Aにおける貼付平面SSとの最短距離MDは、剥離シートRLの厚みRLtに弛み許容間隔SPが加えられた距離とされ、弛み許容間隔SPが0.1mm以上、30mm以下に設定されている。
なお、本実施形態では、無負荷状態で押圧面31Aの最下部が位置するXY平面と平行な平面が貼付平面SSとなっている。
なお、本実施形態の支持テーブル42には、被着体WKの厚み(Z軸方向の寸法)を考慮し、当該被着体WKの被着面WK1が貼付平面SS内に位置するように、支持面42Aの位置を調整するネジ調整機構や駆動機器等の図示しない面位置調整手段が設けられている。
本実施形態では、被着体WKの厚みが一定に調整されており、当該被着体WKが支持面42A上に載置された際、被着面WK1が貼付平面SS内に位置するように、図示しない面位置調整手段によって予め調整されている。
先ず、図1(A)中実線で示す初期位置に各部材が配置されたシート貼付装置EAに対し、当該シート貼付装置EAの使用者(以下、単に「使用者」という)が同図のように原反RSをセットした後、操作パネルやパーソナルコンピュータ等の図示しない操作手段を介して自動運転開始の信号を入力する。すると、繰出手段10が回動モータ13Aを駆動し、原反RSを繰り出して先頭の接着シートASの繰出方向先端部が、折返し部21Aで折り返された剥離シートRLから所定長さ剥離されると、回動モータ13Aの駆動を停止する。次いで、使用者または多関節ロボットやベルトコンベア等の図示しない搬送手段が、支持テーブル42上に被着体WKを載置すると、移動手段40が図示しない減圧手段を駆動し、支持面42Aでの被着体WKの吸着保持を開始する。その後、移動手段40がリニアモータ41を駆動し、支持テーブル42を左方へ移動させ、被着体WKが繰出手段10に対する所定の位置に到達すると、当該繰出手段10が回動モータ13Aを駆動し、被着体WKの移動速度に合わせて原反RSを繰り出す。これにより、接着シートASが剥離シートRLから剥離され、当該剥離シートRLから剥離された接着シートASは、図1(A)中二点鎖線で示すように、押圧ローラ31によって被着体WKに押圧されて貼付される。次に、先頭の接着シートAS全体が被着体WKに貼付されて一体物UPが形成され、当該先頭の接着シートASに続く次の接着シートASの繰出方向先端部が、折返し部21Aで折り返された剥離シートRLから所定長さ剥離されると、繰出手段10が回動モータ13Aの駆動を停止する。そして、支持テーブル42が押圧ローラ31の下方を抜け出ると、移動手段40がリニアモータ41の駆動を停止した後、図示しない減圧手段の駆動を停止し、支持面42Aでの一体物UPの吸着保持を解除する。次いで、使用者または図示しない搬送手段が一体物UPを次工程に搬送すると、移動手段40がリニアモータ41を駆動し、支持テーブル42を初期位置に復帰させ、以降上記同様の動作が繰り返される。
また、実施例2として、厚みRLtが0.038mmの剥離シートRLと、厚みが0.09mmの接着シートASとからなる第2原反RSを用い、弛み計測を行ったところ、最も大きな弛みSCの長さSDMAXが0.059mmであった。そこで、第2原反RSを用いて弛み許容間隔SPを0.1mmに設定し、接触検証を行ったところ、弛みSCが被着体WKに接触することはなかった。一方、比較例2として、第2原反RSを用いて弛み許容間隔SPを0.05mmに設定し、接触検証を行ったところ、弛みSCが被着体WKに接触した。
さらに、実施例3として、厚みRLtが0.05mmの剥離シートRLと、厚みが0.125mmの接着シートASとからなる第3原反RSを用い、弛み計測を行ったところ、最も大きな弛みSCの長さSDMAXが0.086mmであった。そこで、第3原反RSを用いて弛み許容間隔SPを0.1mmに設定し、接触検証を行ったところ、弛みSCが被着体WKに接触することはなかった。一方、比較例3として、第3原反RSを用いて弛み許容間隔SPを0.08mmに設定し、接触検証を行ったところ、弛みSCが被着体WKに接触した。
また、実施例4として、厚みRLtが0.075mmの剥離シートRLと、厚みが0.125mmの接着シートASとからなる第4原反RSを用い、弛み計測を行ったところ、最も大きな弛みSCの長さSDMAXが0.083mmであった。そこで、第4原反RSを用いて弛み許容間隔SPを0.1mmに設定し、接触検証を行ったところ、弛みSCが被着体WKに接触することはなかった。一方、比較例4として、第4原反RSを用いて弛み許容間隔SPを0.08mmに設定し、接触検証を行ったところ、弛みSCが被着体WKに接触した。
以上により、最短距離MDは、剥離シートRLの厚みRLtに弛み許容間隔SPとして0.1mm以上加えた距離としておくことで、弛みSCが着体WKに接触することがないことが解った。
そこで、上記の第1~第4原反RSを用い、弛み許容間隔SPを30mmから1mmずつ大きくしつつ接触検証を行い、貼付不良が発生した最小の弛み許容間隔SPを調べ、その結果を下記の表3に示す。
押圧手段30は、駆動機器としての直動モータの出力軸に支持され、減圧ポンプや真空エジェクタ等の図示しない減圧手段によって吸着保持が可能な保持部材で接着シートASを保持し、当該保持部材で保持した接着シートASを被着体WKに押圧して貼付する構成でもよい。
本発明における剥離シートRLの厚みRLtは、0.025mm、0.038mm、0.05mm、0.075mm以外であってもよく、例えば、厚みRLtが、0.01mm、0.1mmまたは1mm等、0.001mm~3mmの範囲でもよいし、0.001mm以下でもよいし、3mm以上でもよく、どのような厚みでもよい。
本発明における弛み許容間隔SPは、0.1mm、0.3mm、5mm、10mm、30mm以外であってもよく、例えば、弛み許容間隔SPが、0.15mm、1mm、7mm、25mmまたは29mm等、0.1mm以上、30mm以下であればどのような間隔でもよい。
本発明における貼付平面SSの位置は、無負荷状態で押圧面31Aの最下部が位置するXY平面と平行な平面以外であってもよく、例えば、無負荷状態での押圧面31Aの最下部の位置よりも、剥離シートRLの厚みRTt以内で下方に離れたXY平面と平行な平面でもよいし、無負荷状態での押圧面31Aの最下部よりも、例えば、0.001mm、0.5mm、3mm、10mmまたは30mm上方に離れたXY平面と平行な平面でもよく、押圧手段30で接着シートASを被着面WK1に貼付できる位置であればどこでもよい。
図示しない面位置調整手段は、被着体WKを移動させて被着面WK1を貼付平面SS内に位置させてもよいし、押圧手段30を移動させて貼付平面SSを被着面WK1と同一平面内に位置させてもよいし、支持面42A上に載置される被着体WKの厚みが一定である場合や不定である場合、カメラや投影機等の撮像手段や、光学センサや超音波センサ等の各種センサ等で構成された厚み検知手段で検知し、その厚みに応じて被着面WK1が貼付平面SS内に位置するように、被着体WKおよび押圧手段30の少なくとも一方を移動させてもよいし、押圧ローラ31の下方所定位置に支持テーブル42または被着体WKが到達した時点で、当該被着体WKの被着面WK1が貼付平面SS内に位置するようにしてもよいし、本発明のシート貼付装置EAに備わっていてもよいし、備わっていなくてもよい。
貼付平面SSは、無負荷状態での押圧面31Aの最下部の位置でなくてもよく、例えば、支持面42Aの1mm上方、10mm上方といった任意の位置や、剥離板21の所定の位置から5mm下方、50mm下方といった任意の位置や、他の装置の所定の位置から所定の間隔離れた位置等、任意の部材を基準とした任意の位置であってもよい。
前記実施形態において、ローラ等の回転部材が採用されている場合、当該回転部材を回転駆動させる駆動機器を備えてもよいし、回転部材の表面や回転部材自体をゴムや樹脂等の変形可能な部材で構成してもよいし、回転部材の表面や回転部材自体を変形しない部材で構成してもよいし、ローラの代わりに回転するまたは回転しないシャフトやブレード等の他の部材を採用してもよいし、押圧ローラや押圧ヘッド等の押圧手段や押圧部材といった被押圧物を押圧するものが採用されている場合、上記で例示したものに代えてまたは併用して、ローラ、丸棒、ブレード材、ブラシ状部材の他、大気やガス等の気体の吹き付けによるものを採用してもよいし、押圧するものをゴム、樹脂、スポンジ等の変形可能な部材で構成してもよいし、金属や樹脂等の変形しない部材で構成してもよいし、剥離板や剥離ローラ等の剥離手段や剥離部材といった被剥離物を剥離するものが採用されている場合、上記で例示したものに代えてまたは併用して、板状部材、丸棒、ローラ等の部材を採用してもよいし、剥離するものをゴムや樹脂等の変形可能な部材で構成してもよいし、変形しない部材で構成してもよいし、支持(保持)手段や支持(保持)部材等の被支持部材(被保持部材)を支持(保持)するものが採用されている場合、メカチャックやチャックシリンダ等の把持手段、クーロン力、接着剤(接着シート、接着テープ)、粘着剤(粘着シート、粘着テープ)、磁力、ベルヌーイ吸着、吸引吸着、駆動機器等で被支持部材を支持(保持)する構成を採用してもよいし、切断手段や切断部材等の被切断部材を切断または、被切断部材に切込や切断線を形成するものが採用されている場合、上記で例示したものに代えてまたは併用して、カッター刃、レーザカッタ、イオンビーム、火力、熱、水圧、電熱線、気体や液体等の吹付け等で切断するものを採用したり、適宜な駆動機器を組み合わせたもので切断するものを移動させて切断するようにしたりしてもよい。
10…繰出手段
20…剥離手段
20A…折返し部
30…押圧手段
AS…接着シート
MD…最短距離
RL…剥離シート
RLt…厚み
RS…原反
SP…弛み許容間隔
SS…貼付平面
WK…被着体
WK1…被着面
Claims (2)
- 剥離シートに接着シートが仮着された原反を繰り出す繰出手段と、
前記繰出手段で繰り出される前記原反の前記剥離シートを折返し部で折り返し、当該剥離シートから前記接着シートを剥離する剥離手段と、
被着体の被着面を所定の貼付平面内に位置させ、前記折返し部と相対移動する当該被着体の被着面に、前記剥離手段で剥離した前記接着シートを押圧して貼付する押圧手段とを備えたシート貼付装置において、
前記折返し部における前記貼付平面との最短距離は、前記剥離シートの厚みに弛み許容間隔が加えられた距離とされ、
前記弛み許容間隔が0.1mm以上、30mm以下に設定されていることを特徴とするシート貼付装置。 - 剥離シートに接着シートが仮着された原反を繰り出す繰出工程と、
前記繰出工程で繰り出される前記原反の前記剥離シートを折返し部で折り返し、当該剥離シートから前記接着シートを剥離する剥離工程と、
被着体の被着面を所定の貼付平面内に位置させ、前記折返し部と相対移動する当該被着体の被着面に、前記剥離工程で剥離した前記接着シートを押圧して貼付する押圧工程とを実施するシート貼付方法において、
前記折返し部における前記貼付平面との最短距離は、前記剥離シートの厚みに弛み許容間隔が加えられた距離とされ、
前記弛み許容間隔が0.1mm以上、30mm以下に設定されていることを特徴とするシート貼付方法。
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