CN108690512A - Adhesive film - Google Patents
Adhesive film Download PDFInfo
- Publication number
- CN108690512A CN108690512A CN201710984298.8A CN201710984298A CN108690512A CN 108690512 A CN108690512 A CN 108690512A CN 201710984298 A CN201710984298 A CN 201710984298A CN 108690512 A CN108690512 A CN 108690512A
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- Prior art keywords
- film
- stripping
- layer
- adhesive
- thickness
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/20—Presence of organic materials
- C09J2400/22—Presence of unspecified polymer
- C09J2400/226—Presence of unspecified polymer in the substrate
Landscapes
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides a kind of adhesive film, the adhesive tape with stripping film and comprising resin film and adhering agent layer.Above-mentioned adhering agent layer has the first bonding plane fitted on above-mentioned resin film and fits in the second bonding plane on above-mentioned stripping film.The product of the Young's modulus and thickness at 25 DEG C of above-mentioned stripping film is 0.3MPam or less.The overall thickness of above-mentioned resin film and above-mentioned adhering agent layer is 10 μm or less.Under the peeling rate of 300mm/min, the peeling force relative to above-mentioned second bonding plane of above-mentioned stripping film is 40mN/25mm or less.The technical problem of the present invention is to improve the fabrication yield of adhesive film.
Description
Technical field
The present invention relates to a kind of adhesive films.
Background technology
In order to promote to be set to the heat dissipation of internal electronic unit, in the small-sized electronic products such as mobile phone, laptop
Use the cooling fins such as the graphite flake for having heat transmission.Especially in graphite flake, in order to prevent its missing, stripping etc., using with
The adhesive tape of dyed layer protects (for example, referenced patent document 1) surface of sheet material.For the adhesion with dyed layer
Adhesive tape, for the miniaturization of electronic product or in order to improve the thermal diffusivity of the electronic unit brought by graphite flake, it is desirable to further
Reduce its thickness.For example, the thickness of the adhesive tape with dyed layer is very thin 10 μm or less.
In patent document 1, as the adhesive tape for protecting graphite flake, a kind of coloring adhesive tape is disclosed,
There is adhering agent layer, the colored matrix materials to have at least one surface of colored matrix materials:Thickness is 1 μm or more 6 μm below
Resin film layer, thickness are that 1 μm or more 6 μm adhering agent layers and thickness below are 0.5 μm or more 2 μm of dyed layers below, institute
The light transmittance for stating colored matrix materials is 0.1% or more 10% hereinafter, the thickness of adhesive tape is 3 μm or more 10 μm or less.
Such coloring adhesive tape, such as have adhering agent layer, the resin film that is set on adhering agent layer and setting
In the dyed layer on resin film, in order to maintain the flatness of adhering agent layer or prevent the pollution of adhering agent layer, and stripping film is pasted
Invest adhering agent layer side.Further, manufacture colour adhesive tape during, by by adhesive tape batch for web-like come
Carry out the processing (keeping, transport etc.) of adhesive tape.
Existing technical literature
Patent document
Patent document 1:Japanese Unexamined Patent Publication 2013-203965 bulletins
Invention content
The technical problem to be solved in the present invention
However, the thickness of adhesive tape is thinner, the rigidity of adhesive tape is lower.Specifically, in resin film and above-mentioned
The overall thickness of adhering agent layer is in 10 μm of very thin adhesive tapes below, removed from adhesive film stripping film, be attached at by
When on viscous object, there is generation fold or relaxation, stripping film are difficult to stripping or the attaching relative to adherend from adhering agent layer and fit
The case where suitable property becomes problem.Further, due to the peeling force of stripping film and adhering agent layer, there are following situations, i.e.,:It will shell
When being removed from adhering agent layer from film, stripping film is difficult to be stripped from adhering agent layer;Adhesion glue is being manufactured in a manner of roll-to-roll
When band, in the adhesive tape after batching adhesive tape, processing being batched, fold or relaxation are generated on adhesive tape, so as to cause
Suitability is processed to be deteriorated.
In view of the above circumstances, the purpose of the present invention is to provide a kind of adhesive films, wherein the fissility of stripping film is excellent,
It is not likely to produce fold or relaxation after peeling stripping film off and attaching suitability is excellent.Further, a kind of adhesive film is provided, with volume
When manufacturing very thin adhesive film to volume mode, in the adhesive film after batching adhesive film, processing being batched, it is not easy to produce on adhesive film
Raw fold or relaxation, processing suitability are excellent.
Solve the technological means of technical problem
The present inventor is by conscientious the study found that when the overall thickness of resin film and adhering agent layer is very thin 10 μm
When following, by by the Young's modulus (MPa) at 25 DEG C of peeling force and stripping film between adhering agent layer and stripping film
It is set as specific range with the product of thickness (m), stripping film is easy to remove from adhering agent layer, even if being removed from adhesive film
Stripping film when being attached on adherend, is not easy to generate fold or relaxation on adhesive film, and it is excellent to attach suitability, further,
When manufacturing very thin adhesive film in a manner of roll-to-roll, in the adhesive film after batching adhesive film, processing being batched, it is not easy adhering
Fold or relaxation are generated on film, processing suitability is excellent.Above-mentioned technical problem is resolved as a result,.Above-mentioned technology is solved to ask
The method of topic is as described below.
In order to achieve the above objectives, the adhesive film of one embodiment of the present invention have stripping film and comprising resin film with
The adhesive tape of adhering agent layer.Above-mentioned adhering agent layer have the first bonding plane for fitting on above-mentioned resin film with fit in it is above-mentioned
The second bonding plane on stripping film.
The product of the Young's modulus (MPa) and thickness (m) at 25 DEG C of above-mentioned stripping film is 0.3MPam or less.
The overall thickness of above-mentioned resin film and above-mentioned adhering agent layer is 10 μm or less.
Under the peeling rate of 300mm/min, the peeling force relative to above-mentioned second bonding plane of above-mentioned stripping film is
40mN/25mm or less.
According to such adhesive film, the bending stiffness and peeling force of stripping film are most appropriate, are batching adhesive film, processing volume
When adhesive film after taking, it is not easy to generate fold or relaxation on adhesive film.Further, stripping film is being removed from adhering agent layer
When, stripping film can be effectively removed from adhering agent layer.
Above-mentioned stripping film can have the Young's modulus of 500MPa or more at 25 DEG C.
Above-mentioned resin film can have the Young's modulus of 500MPa or more at 25 DEG C.
The average height (Rc) with the roughness curve element on the surface of above-mentioned adhering agent layer opposite side of above-mentioned stripping film
For 500nm or less.
The thickness of above-mentioned resin film can be 1 μm or more 6 μm or less.
The thickness of above-mentioned adhering agent layer can be 1 μm or more 5 μm or less.
The rigidity of above-mentioned stripping film and above-mentioned resin film is most appropriate as a result, viscous after batching adhesive film, processing is batched
When film, it is not easy to generate fold or relaxation on adhesive film.
In above-mentioned adhesive film, (peel angle is 180 ° to the adhesion strength relative to stainless steel plate of above-mentioned adhesive tape, stripping
It is 300mm/min from speed) can be 1N/25mm or more 10N/25mm or less.
Even if being as a result, 10 μm of very thin composition, in the adhesive film after batching adhesive film, processing being batched, it is not easy to
It is generated between stripping film and adhering agent layer and floats or generate fold or relaxation.Furthermore, it is possible to suitably be adhered to the quilts such as graphite flake
On viscous object, further, it is easy to remove on the adherend once attached and re-start attaching from having been carried out.
Above-mentioned adhering agent layer and above-mentioned resin film can be attached on the surface of graphite flake.
As a result, since the overall thickness of above-mentioned resin film and above-mentioned adhering agent layer is very thin 10 μm hereinafter, therefore can be
In the case of not damaging thermal diffusivity, missing, stripping of graphite flake etc. are prevented, to be protected.
Invention effect
According to the present invention, as described above, it is possible to provide a kind of attaching suitability and process the excellent adhesive film of suitability.
Description of the drawings
In Fig. 1, figure (a) is stereoscopic schematic diagram of the adhesive film of present embodiment under the state that is wound;It is this reality to scheme (b)
Apply the diagrammatic cross-section of the adhesive film of mode;Figure (c) is the graphite flake for the adhesive tape for being pasted with present embodiment via two-sided
Adhesive tape and the diagrammatic cross-section for being attached at the state on shell;
In Fig. 2, Fig. 2 (a) is the diagrammatic cross-section of the coloring adhesive film of present embodiment;Fig. 2 (b) is to be pasted with this implementation
The graphite flake of the coloring adhesive tape of mode is attached at the diagrammatic cross-section of the state on shell via double faced adhesive tape;
Fig. 3 is the schematic diagram illustrated to the manufacturing process of the adhesive film of present embodiment.
Reference sign
1:Colour adhesive tape;2:Adhesive film;3:Colour adhesive film;4:Adhesive tape;11:Resin film;11u:Upper surface;
12:Dyed layer;15:Roughened layer;15u:Upper surface;20:Adhering agent layer;20a,20b:Bonding plane;30:Stripping film;30d:Under
Surface;100:Graphite flake;101:Double faced adhesive tape;102:Shell;210:Work beam;211,240a:Roll out roller;220:Coating machine
Structure;230:Hothouse;240:Attach mechanism;240b,240c:Roller;250a,250b,250c,250d:Deflector roll.
Specific implementation mode
Hereinafter, embodimentsing of the present invention will be described while with reference to Figure of description.Sometimes in each explanation
XYZ axial coordinates are imported in book attached drawing.
[The ] of adhesive film;
Fig. 1 (a) is stereoscopic schematic diagram of the adhesive film of present embodiment under the state that is wound.Fig. 1 (b) is this embodiment party
The diagrammatic cross-section of the adhesive film of formula.Fig. 1 (c) is the graphite flake for the adhesive tape for being pasted with present embodiment via double faced adhesive tape
And it is attached at the diagrammatic cross-section of the state on shell.
As shown in Fig. 1 (a), the adhesive film 2 of present embodiment, such as be wound in work beam along long side direction DL and (batch
Core) on 210.The length (overall length) on long side direction DL for the adhesive film 2 being wound on work beam 210 be, for example, 6000m with
Upper 10000m or less.The length of adhesive film 2 on the width direction DW (short side direction) vertical with long side direction DL is, for example,
800mm or more 1500mm or less.
The cross-section structure of adhesive film 2 is illustrated below.
As shown in Fig. 1 (b), adhesive film 2 has resin film 11, adhering agent layer 20, stripping film 30.In the example of Fig. 1 (b)
In, adhesive film 2 is laminated with the sequence of 30/ adhering agent layer of stripping film, 20/ resin film 11.In the present embodiment, sometimes will
30 side of stripping film is used as downside, using 11 side of resin film as upside.It, can be from stripping film 30 and adhesion in adhesive film 2
Stripping film 30 is removed on the interface of oxidant layer 20.In addition, when adhesive film 2 is taken up the winding of roller 210, the outermost layer as adhesive film 2
The upper surface 11u on surface is in contact with the lower surface 30d of stripping film 30.
Stripping film 30 is set on the surface with 11 opposite side of resin film of adhering agent layer 20.In the example of Fig. 1 (b),
Stripping film 30 is the lowest level of adhesive film 2.
There is no particular limitation for the thickness of stripping film 30, but from can be easily by the poplar at 25 DEG C of stripping film 30
The angle that family name's modulus (MPa) and the product of thickness (m) are adjusted in aftermentioned range is set out, and preferably 1 × 10-5M or more 1 × 10- 4M is hereinafter, more preferably 1.5 × 10-5M or more 8 × 10-5M is hereinafter, further preferably 1.7 × 10-5M or more 5 × 10-5M with
Under, particularly preferably 2 × 10-5M or more 3 × 10-5M or less.Herein, the thickness of present embodiment refers to being measured by multiple points
The average value of thickness.In addition, when stripping film 30 has film base material and the peeling agent layer being set on the film base material, it is above-mentioned
" thickness of stripping film 30 " refers to the thickness of film base material.If the thickness of stripping film 30 is less than 1 × 10-5Then there is the place of adhesive film in m
Reduced performance is managed, when coating on stripping film 30 includes the solution of adherence composition, is heated, the heat of stripping film 30
It shrinks and increases, fold or streak are generated on adhesive film 2, process the case where suitability reduces.On the other hand, if stripping film 30
Thickness is more than 1 × 10-4M, then when removing stripping film 30, the laminated body of resin film 11 and adhering agent layer 20 is (hereinafter, by the state
As " adhesive tape 4 ".) deform, it is difficult to stripping film 30 is removed from adhering agent layer 20.
In addition, there is no particular limitation for the Young's modulus at 25 DEG C of stripping film 30, but from can easily will stripping
The angle that the product of the Young's modulus (MPa) and thickness (m) at 25 DEG C from film 30 is adjusted in aftermentioned range is set out, preferably
For 500MPa or more 10000MPa hereinafter, more preferably 2000MPa or more 6000MPa hereinafter, further preferably 3500MPa with
Upper 5000MPa or less.
In addition, the Young's modulus (MPa) at 25 DEG C of stripping film 30 and the product of thickness (m) be 0.3MPam hereinafter,
Preferably 0.25MPam hereinafter, more preferably 0.2MPam hereinafter, further preferably 0.15MPam or less.The product
The lower limit of value there is no particular limitation, but preferably 0.01MPam or more, more preferably 0.05MPam or more, further
Preferably 0.1MPam or more.
In addition, under the peeling rate of 300mm/min, the bonding plane 20b's relative to adhering agent layer 20 of stripping film 30
180 ° of peeling forces are 40mN/25mm hereinafter, preferably 35mN/25mm is hereinafter, more preferably 30mN/25mm or less.Lower limit does not have
It is special to limit, but preferably 5mN/25mm or more, more preferably 10mN/25mm or more, further preferably 15mN/25mm with
On.If the peeling force of stripping film 30 is less than 5mN/25mm, there are following situations, i.e.,:Adhesive film is being manufactured in a manner of roll-to-roll
When, in the adhesive film after batching adhesive film, processing being batched, exists to generate on the interface of stripping film 30 and adhering agent layer 20 and float
It rises, there is a situation where peel off for stripping film 30 in the processing such as keeping, the transport of adhesive film.In order to which 180 ° of above-mentioned peeling forces are set
For 40mN/25mm hereinafter, needing to properly select adhering agent layer 20 and stripping film 30.
According to the adhesive film 2 with such stripping film 30, even if it is the overall thickness of resin film 11 and adhering agent layer 20
It is not easy on adhesive film 2 in the adhesive film 2 after batching adhesive film 2, processing being batched for 10 μm of very thin compositions below
Generate fold or relaxation.It further, can be effectively from adhering agent layer 20 when removing stripping film 30 from adhering agent layer 20
Remove stripping film 30.
For example, if the product of the Young's modulus (MPa) and thickness (m) at 25 DEG C of stripping film 30 is less than 0.01MPa
M, then when coating on stripping film 30 includes the solution of adherence composition, heated, stripping film 30 is easy to happen heat
It shrinks, fold or streak is generated on adhesive film 2, processing suitability reduces, and the rigidity of stripping film 30 itself is too weak, it is difficult to will shell
It is removed from film 30.If the product of the Young's modulus (MPa) and thickness (m) at 25 DEG C of stripping film 30 is more than 0.3MPam,
The rigidity of stripping film 30 itself is strong, and when removing stripping film 30, adhesive film 2 deforms, and is easy to generate fold on adhesive film 2
Or relaxation, therefore not preferably.Further, after peeling stripping film 20 off, fold or relaxation are also easy tod produce on adhesive tape 4,
Therefore not preferably.
In addition, even if the product of the Young's modulus (MPa) and thickness (m) at 25 DEG C of stripping film 30 is 0.3MPam
Hereinafter, if the peeling force of stripping film 30 is more than 40mN/25mm, stripping film 30 and the adherence of adhering agent layer 20 are too strong, there is stripping
Stripping, a part for adhering agent layer 20 and stripping film 30 are difficult to from its interface with adhering agent layer 20 simultaneously from resin from film 30
The possibility removed on film 11, or be easy to generate on the adhesive film 2 after peeling stripping film 30 off if even if stripped of stripping film 30
Fold or relaxation.
The arithmetic average roughness Ra of the lower surface 30d of stripping film 30 is preferably 50nm hereinafter, more preferably 40nm or less.
The lower limit of the Ra of lower surface 30d is, for example, 10nm.The average height Rc of the roughness curve element of lower surface 30d is preferably
500nm is hereinafter, more preferably 450nm or less.The lower limit of the Rc of lower surface 30d is, for example, 100nm.10 points of lower surface 30d are flat
Equal roughness Rzjis is preferably 800nm hereinafter, more preferably 700nm or less.The lower limit of the Rzjis of lower surface 30d is, for example,
100nm。
By the way that the average height Rc of the roughness curve element of the lower surface 30d of stripping film 30 is set as above range, glue
When film 2 and being taken up roller 210 and roll, even if the following table of the upper surface 11u and stripping film 30 of outermost surface as adhesive film 2
Face 30d is in contact, and adhesive film 2 is not easy to cause adhesion and air is mixed into, and slim adhesion is processed by roll-to-roll mode
When film 2 to batch suitability excellent.
For example, the upper surface 11u of outermost surface as adhesive film 2, lower surface 30d relative to stripping film 30
There is no particular limitation for dynamic friction factor, but preferably 5 hereinafter, more preferably 4 hereinafter, further preferably 3 or less.Dynamic friction
There is no particular limitation for the lower limit of factor, but preferably 0.2 or more, more preferably 0.5 or more, further preferably 1 or more.If
Within the above range, then adhesive film 2 is not easy to cause adhesion dynamic friction factor and air is mixed into, and is processed by roll-to-roll mode thin
When the adhesive film 2 of type to batch suitability excellent.
Adhering agent layer 20 is set on the surface with lower surface 30d opposite sides of stripping film 30.Adhering agent layer 20 is set to
Between stripping film 30 and resin film 11.Adhering agent layer 20 has the bonding plane 20a (the first bonding plane) fitted on resin film 11
With the second bonding plane 20b (the second bonding plane) fitted on stripping film 30.
There is no particular limitation for the thickness of adhering agent layer 20, but preferably 1 μm or more 5 μm hereinafter, more preferably 1 μm or more
3 μm or less.If the thickness of adhering agent layer 20 is less than 1 μm, the adherence between adhering agent layer 20 and graphite flake is low, exists and is difficult to
Adequately protect graphite flake the case where.If the thickness of adhering agent layer 20 is more than 5 μm, adhesive film 2 thickens, and is unsatisfactory for wanting for slimming
It asks.
Resin film 11 is set on the surface with 30 opposite side of stripping film of adhering agent layer 20.Resin film 11 is adhesive film 2
Base material.
There is no particular limitation for the Young's modulus at 25 DEG C of resin film 11, but preferably 500MPa or more 10000MPa
Hereinafter, more preferably 2000MPa or more 6000MPa are hereinafter, further preferably 3500MPa or more 5000MPa or less.Passing through will
The Young's modulus at 25 DEG C of resin film 11 is set as above range, even if excellent if thickness thin processing performance.
There is no particular limitation for the thickness of resin film 11, is 1 μm or more 6 μm hereinafter, preferably 1 μm or more 3 μm or less.If
The thickness of resin film 11 is less than 1 μm, then the strength reduction of resin film 11, it becomes difficult to be transported by roll-to-roll mode.If
The thickness of resin film 11 is more than 6 μm, then adhesive film 2 thickens, and is unsatisfactory for the requirement of slimming.
In addition, the overall thickness of resin film 11 and adhering agent layer 20 is 10 μm or less.Preferably 2 μm or more 10 μm hereinafter, more
Preferably 2.5 μm or more 9 μm hereinafter, further preferably 3 μm or more 8 μm hereinafter, particularly preferably 3.5 μm or more 6 μm or less.
If the overall thickness of resin film 11 and adhering agent layer 20 is less than 2 μm, the strength reduction of resin film 11 and adhering agent layer 20 becomes difficult
By by being transported in a manner of roll-to-roll.If the thickness of resin film 11 and adhering agent layer 20 is more than 10 μm, adhesive film 2 thickens,
It is unsatisfactory for the requirement of slimming.If resin film 11 and adhering agent layer 20 overall thickness be 10 μm hereinafter, if due to its be it is very thin, because
Adhesive tape 4 can be configured in electronic product by this in the case where not harming the inner space of small-sized electronic product.
In addition, (peel angle is 180 ° to the adhesion strength relative to stainless steel plate of adhesive tape 4, and peeling rate is
Lower limit 300mm/min) is preferably 1N/25mm or more, more preferably 1.2N/25mm or more, further preferably 1.3N/25mm
More than.On the other hand, there is no particular limitation for the upper limit of adhesion strength (peel angle is 180 °, peeling rate 300mm/min),
But preferably 10N/25mm hereinafter, more preferably 7N/25mm hereinafter, further preferably 5N/25mm hereinafter, particularly preferably
2.5N/25mm following.
By being above range by the lower limit set of adhesion strength, even if the very thin composition that adhesive tape is 10 μm, is being rolled up
When taking adhesive film 2, handling the adhesive film 2 after batching, it is not easy to the generation between stripping film 30 and adhering agent layer 20 and floats or produce
Raw fold or relaxation.In addition, if adhesion strength is above range, even if adhesive tape can if being 10 μm of very thin composition
Suitably it is adhered on graphite flake.Further, it if adhesion strength is above range, becomes easy and once attaches from having been carried out
It is removed on adherend and re-starts attaching.
As shown in Fig. 1 (c), the resin film 11 of stripping film 30 and laminated body (adhesive tape 4) example of adhering agent layer 20 are peeled off
It can such as be attached on graphite flake 100.For example, the exposed surface of adhering agent layer 20 is adhered on the surface of graphite flake 100.This
Outside, graphite flake 100 is attached at via double faced adhesive tape 101 on shell 102 (for example, electronic unit).As a result, in graphite flake
In 100, heat is spread along Z-direction also along X-direction and Y direction.The heat quilt distributed as a result, from electronic unit
Effectively radiate.Specifically, it is preferable that adhesive tape 4 is attached on graphite flake set in electronic unit inside.
Further, since the laminated body (adhesive tape 4) of resin film 11 and adhering agent layer 20 is very thin, therefore can there is no harm in
In the case of the inner space of evil small-sized electronic product, adhesive tape 4 is configured in electronic product, thermal diffusivity is not being damaged
Meanwhile preventing the missing of graphite flake 100, peeling etc., to be protected.
Like this, even if when the overall thickness of resin film 11 and adhering agent layer 20 is very thin 10 μm or less, by that will glue
The product for the Young's modulus and thickness at 25 DEG C of the peeling force and stripping film 30 between oxidant layer 20 and stripping film 30 is set
For specific range, stripping film 30 becomes easy to be removed from adhering agent layer 20.In addition, even if adhesive film 30 is attached at stone
It when on ink sheet 100, is not easy to generate fold or relaxation on adhesive film 2, attaching suitability becomes excellent.Further, passing through
When roll-to-roll mode manufactures very thin adhesive film 2, or in the adhesive film 2 after batching adhesive film 2, processing being batched, it is not easy viscous
It and generates fold or relaxation on film 2, processing suitability becomes excellent.
In adhesive film 2, characteristic according to its occupation mode or as a purpose, adhesive film 2 can also have in addition to resin
Layer other than film 11, adhering agent layer 20, stripping film 30.As such layer, such as dyed layer, roughened layer, hard can be enumerated
The functional layers such as coating, adhesive layer, reflecting layer, antiglare layer, conductive film, insulating layer;Or printing layer, lettering layer, coating film etc.
Decorative layer etc..As an example, below to be formed on resin film 11 dyed layer 12 and roughened layer 15 composition it is viscous
Film to illustrate (hereinafter, sometimes referred to as coloring adhesive film).
[Colour the ] of adhesive film;
Fig. 2 (a) is the diagrammatic cross-section of the coloring adhesive film of present embodiment.Fig. 2 (b) is to be pasted with present embodiment
The graphite flake of coloring adhesive tape is attached at the diagrammatic cross-section of the state on shell via double faced adhesive tape.
As shown in Fig. 2 (a), coloring adhesive film 3 have resin film 11, adhering agent layer 20, stripping film 30, dyed layer 12, with
And roughened layer 15.In the example of Fig. 2 (a), coloring adhesive film 3 is coloured with 30/ adhering agent layer of stripping film, 20/ resin film 11/
The sequence of 12/ roughened layer 15 of layer is laminated.
Dyed layer 12 is set on the surface with 20 opposite side of adhering agent layer of resin film 11.For example, dyed layer 12 is arranged
Between resin film 11 and roughened layer 15.Dyed layer 12 is set for assigning coloring adhesive film 3 with design.In addition, coloring
Layer 12 is the layer for improving the adherence between resin film 11 and roughened layer 15.Roughened layer 15 is set to dyed layer 12
With on the surface of 11 opposite side of resin film.
Roughened layer 15 is top layer in the example of Fig. 2 (a).When coloring adhesive film 3 is taken up roller and rolls, as
The upper surface 15u of the outermost surface of color adhesive film 3 is in contact with the lower surface 30d of stripping film 30.
There is no particular limitation by the arithmetic average roughness Ra of roughened layer 15, but preferably 0.1 μm or more, more preferably
0.1 μm or more 1.0 μm hereinafter, further preferably 0.2 μm or more 0.5 μm or less.The roughness curve element of roughened layer 15
Average height Rc be 0.5 μm or more, preferably 0.5 μm or more 5.0 μm hereinafter, more preferably 0.8 μm or more 3.0 μm hereinafter,
Further preferably 1.0 μm or more 2.0 μm or less.There is no particular limitation by 10 mean roughness Rzjis of roughened layer 15,
But preferably 1.0 μm or more, more preferably 1.0 μm or more 9.0 μm hereinafter, further preferably 2.0 μm or more 7.0 μm hereinafter,
Particularly preferably 2.5 μm or more 5.0 μm or less.
It, can be by 60 ° of minute surfaces of aftermentioned roughened layer 15 by making roughened layer 15 that there is the structural plane of above range
Glossiness is set as defined range.The setting when graphite flake for being pasted with coloring adhesive film 3 being set to inside electronic unit as a result,
Meter property is excellent.
For example, there is no particular limitation for the dynamic friction factor of the lower surface 30d relative to stripping film 30 of upper surface 15u,
But preferably 5 hereinafter, more preferably 4 hereinafter, further preferably 3 or less.There is no particular limitation for the lower limit of dynamic friction factor,
But preferably 0.5 or more, more preferably 1 or more, further preferably 2 or more.If dynamic friction factor is above range,
Color adhesive film 3 is taken up roller when rolling, and is not easy to cause adhesion and air is mixed into, and process slim adhesion by roll-to-roll mode
When film 2 to batch suitability excellent.
In addition, there is no particular limitation for 60 ° of mirror surface lusters of the roughened layer 15 with such roughness, it is
0.5% or more 50% hereinafter, preferably 1% or more 9% hereinafter, more preferably 1% or more 5% or less.Accordingly, for being pasted with
Peel the graphite flake of the laminated body of stripping film 30 off from coloring adhesive film 3, that is, for being pasted with 20/ resin film of adhering agent layer
Laminated body by the state (hereinafter, be known as " coloring adhesive tape made of the sequence stacking of 11/ dyed layer, 12/ roughened layer 15
1 ") graphite flake, appearance is in unglazed style, when that will colour adhesive tape and be set to inside electronic unit, since coloring is glued
It adhesive tape 1 and seems that with electronic unit be in integrated, design becomes excellent.
In colouring adhesive film 3, in the Z-axis direction between adjacent layer, it can be in direct contact, it also can mediate contact.
When contact, in the Z-axis direction between adjacent layer, the middle layer (not shown) for improving adherence etc. may be present.In addition,
Each layer of color adhesive film 3 can be single layer, can also be made of multiple layers.
There is no particular limitation for the thickness of dyed layer 12, be 0.5 μm or more 10 μm hereinafter, preferably 0.8 μm or more 3 μm with
Under.If the thickness of dyed layer 12 is less than 0.5 μm, there are the adherences of resin film 11 and roughened layer 15 to reduce, roughened layer
15 the case where being peeled off from resin film 11.In addition, if the thickness of dyed layer 12 is more than 10 μm, colours adhesive film 3 and thicken, is discontented with
The requirement being thinned enough.
There is no particular limitation for the thickness of roughened layer 15, is 0.5 μm or more 10 μm hereinafter, preferably 0.6 μm or more 3 μm
Hereinafter, more preferably 0.8 μm or more 2 μm or less.If the thickness of roughened layer 15 is less than 0.5 μm, it cannot get required structure
Face colours adhesive film 3 and thickens if the thickness of roughened layer 15 is more than 10 μm, is unsatisfactory for the requirement of slimming.
By the way that the thickness of each layer is set as above-mentioned range, the thickness for peeling the coloring adhesive tape 1 after stripping film 30 off is
10 μm or so, coloring adhesive tape 1 is constituted in a manner of very thin.
Further, viscous due to peeling the coloring after stripping film 30 off as shown in Fig. 2 (b) other than above-mentioned heat dissipation effect
It adhesive tape 1 and is provided with dyed layer 12, therefore graphite flake is apparent uneven becomes not eye-catching.Further, since coloring is adhered
Roughened layer 15 is provided on adhesive tape 1, therefore its appearance becomes unglazed style.As a result, due to coloring adhesive tape 1 seem with
Electronic unit is in integrated (seeming to combine together), and therefore, coloring adhesive tape 1 is not easy eye-catching, and design is also improved.
In addition, in adhesive film 2 or coloring adhesive film 3, in adhering agent layer 20, resin film 11 and roughened layer 15 at least
One layer can include colorant.There is no particular limitation for colorant, but can for example enumerate, carbon black, titanium oxide, calcium carbonate,
Barium sulfate, yellow ferric oxide, red ferric oxide, cyanine blue, aluminium powder, mica titanium valve etc..Graphite flake 100 is apparent uneven as a result,
Become not eye-catching, 100 apparent aesthetics of graphite flake is further enhanced.That is, adhesive tape will be pasted with or coloured viscous
The design when graphite flake 100 of adhesive tape is set to inside electronic unit becomes more excellent.
The material of each layer is as described below in adhesive film 2.
[Shu Zhimo ]
The resin types of resin film are used in, there is no particular limitation, but can for example enumerate by poly terephthalic acid second
The polyester that the polyester such as diol ester (PET), polybutylene terephthalate (PBT) (PBT), polyethylene naphthalate (PEN) are formed
Film;The cellulose membranes such as polyurethane film, polyethylene film, polypropylene screen, Triafol T;Polychloroethylene film, polyvinylidene chloride
Film, polyvinyl alcohol film, ethylene-vinyl acetate copolymer film, polystyrene film, polycarbonate membrane, acrylic resin film, drop ice
The resin films such as piece vinyl resin film, cycloolefin resin film;The laminated body etc. of these two or more films.Resin film can also coverlet
Axis stretching or biaxial stretch-formed.Wherein, from precision, surface smoothness, the difficulty or ease of acquisition of the thickness being required with filming
Degree angularly sets out, preferably polyester film.As polyester film, particularly preferred PET film.In addition, from the angle of dimensional stability and intensity
Degree sets out, and polyester film is preferably through biaxial stretch-formed film.Wherein preferably through biaxial stretch-formed PET film.
[Nian Zhejiceng ]
As the sticker for the adhering agent layer for forming adhesive film 2, there is no particular limitation, such as can adhere from acrylic compounds
Agent, rubber sticker, silicone sticker, carbamates sticker, polyesters sticker, Styrene-diene block
Suitably selection uses in sticker well known to copolymer analog sticker etc..Sticker may be used alone or in combination using two kinds with
On.
It, can be it is preferable to use due to its bonding reliability height as sticker, especially acrylic compounds sticker.
Acrylic compounds sticker, using acrylic polymer as adherence ingredient or host agent, on this basis needed for, including handing over
Join the additives appropriate such as agent, tackifier, softening agent, plasticizer, filler, age resister, colorant.Acrylic polymer
For the polymer using (methyl) alkyl acrylate as monomer main component, according to required, by using can be with (methyl)
Monomer (co-polymerized monomer) that alkyl acrylate is copolymerized and prepare.As (methyl) alkyl acrylate, such as can arrange
Enumerate (methyl) methyl acrylate, (methyl) ethyl acrylate, (methyl) propyl acrylate, (methyl) isopropyl acrylate, (first
Base) butyl acrylate, (methyl) isobutyl acrylate, (methyl) sec-butyl acrylate, (methyl) tert-butyl acrylate, (methyl)
Amyl acrylate, (methyl) Hexyl 2-propenoate, (methyl) heptylacrylate, (methyl) 2-ethyl hexyl acrylate, (methyl) acrylic acid -2-
Ethylhexyl, (methyl) Isooctyl acrylate monomer, (methyl) acrylic acid nonyl ester, the different nonyl ester of (methyl) acrylic acid, (methyl) acrylic acid
Last of the ten Heavenly stems ester, (methyl) isodecyl acrylate, (methyl) acrylic acid hendecane base ester, (methyl) dodecylacrylate, (methyl)
Tridecyl acrylate, (methyl) acrylic acid tetradecane base ester, (methyl) acrylic acid pentadecane base ester, (methyl) acrylic acid ten
Six Arrcostabs, (methyl) acrylic acid heptadecane base ester, (methyl) octadecyl acrylate, (methyl) acrylic acid nonadecyl
(methyl) acrylic acid C1-20 Arrcostabs such as ester, (methyl) acrylic acid eicosane base ester;Preferably (methyl) acrylic acid C4-18 alkane
Base (alkyl of straight-chain or branched) Zhi ]Deng.(methyl) alkyl acrylate can be fitted according to adherence as a purpose etc.
Work as selection.
As (methyl) alkyl acrylate, from Tg, the raising adhering agent layer for reducing obtained acrylic polymer
The angle of adhesion strength set out, (methyl) alkyl acrylate for the alkyl for being preferably 4~14 with carbon atom number.As with
(methyl) alkyl acrylate for the alkyl that carbon atom number is 4~14, such as preferably (methyl) butyl acrylate, (methyl) propylene
Sour isobutyl ester, (methyl) sec-butyl acrylate, (methyl) tert-butyl acrylate, (methyl) amyl acrylate, (methyl) acrylic acid
Own ester, (methyl) heptylacrylate, (methyl) 2-ethyl hexyl acrylate, (methyl) acrylic acid-2-ethyl caproite, (methyl) acrylic acid are different
Monooctyl ester etc., particularly preferred (methyl) butyl acrylate.These monomers can use one kind, can also use simultaneously two or more.
In addition, it is the content of (methyl) alkyl acrylate of 4~14 alkyl to have carbon atom number, third is preferably constituted
50 mass % or more in the monomer component of alkene acids polymers, more preferably 80 mass % or more, further preferably 90 matter
Measure % or more.By setting in the range content, the adhesion strength of above range can be readily derived.
In addition, as the co-polymerized monomer that can be copolymerized with (methyl) alkyl acrylate, such as can enumerate
Go out the carboxyl group-containing monomers such as (methyl) acrylic acid, itaconic acid, maleic acid, fumaric acid, crotonic acid, iso-crotonic acid or its acid anhydrides;Ethylene
The monomers containing sulfonic group such as sodium sulfonate;The aromatic ethylene compounds such as styrene, substituted phenylethylene;The cyano-containings monomer such as acrylonitrile;
The olefines such as ethylene, propylene, butadiene;The vinyl esters such as vinylacetate;Vinyl chloride;Acrylamide, Methacrylamide, N-
Vinyl pyrrolidone, N, the amide-containings monomer such as N- dimethyl (methyl) acrylamide;(methyl) hydroxyalkyl acrylates,
The hydroxyls monomer such as glycerol dimethacrylate;(methyl) acrylate, (methyl) acryloyl morpholine etc. contain amino
Monomer;The monomers containing imide such as N-cyclohexylmaleimide, isopropylmaleimide;(methyl) glycidyl
Ester, (methyl) acrylic acid methylglycidyl esters etc. contain epoxy based monomers;In addition to 2- methylacryoyloxyethyl isocyanates etc.
Other than monomer containing isocyanate group, triethylene glycol two (methyl) acrylate, diethylene glycol two (methyl) propylene can be also enumerated
Acid esters, ethylene glycol two (methyl) acrylate, tetraethylene glycol two (methyl) acrylate, neopentyl glycol two (methyl) acrylic acid
Ester, 1,6-hexylene glycols two (methyl) acrylate, trimethylolpropane tris (methyl) acrylate, pentaerythrite three (methyl) third
Co-polymerized monomer (the multifunctional list of the polyfunctionalities such as olefin(e) acid ester, dipentaerythritol six (methyl) acrylate, divinylbenzene
Body) etc..Co-polymerized monomer can be used alone or be applied in combination two or more.As co-polymerized monomer, it is preferable to use tools
There is the modification monomer of the functional groups such as hydroxyl or carboxyl.
(methyl) alkyl acrylate copolymer, the modification with functional group for preferably comprising 0.1~20 mass % are single
Body, particularly preferably the modification monomer with functional group containing 1~10 mass %.
The weight average molecular weight of (methyl) alkyl acrylate copolymer is preferably 200,000~2,000,000, particularly preferably 500,000
~150 ten thousand.In addition, the weight average molecular weight in this specification is to be scaled polyphenyl by what gel permeation chromatography (GPC) method measured
The value of ethylene.
As crosslinking agent, if for functional group is reacted possessed by (methyl) alkyl acrylate copolymer friendship
Join agent, such as isocyanates crosslinking agent, epoxies crosslinking agent, amine cross-linking agent, melamine class crosslinking can be enumerated
Agent, aziridines crosslinking agent, hydrazine crosslinking agent, aldehyde crosslinking agent, oxazoline classes crosslinking agent, metal alkoxide class crosslinking agent, metal
Chelates crosslinking agent, metallic salt crosslinking agent, ammonium salt class crosslinking agent etc., wherein it is preferred that excellent with the reactivity of hydroxyl and carboxyl
Isocyanates crosslinking agent.Crosslinking agent, which can be used alone, one kind or to be applied in combination two or more.
Isocyanates crosslinking agent includes at least polyisocyanate compounds.As polyisocyanate compounds, such as can
Enumerate the aromatic series polyisocyanate such as toluene di-isocyanate(TDI), '-diphenylmethane diisocyanate, benzene dimethylene diisocyanate
Ester;The aliphatic polymeric isocyanates such as hexamethylene diisocyanate;Isophorone diisocyanate, two isocyanide of hydrogenated methylene diphenyld
Ester ring types polyisocyanate such as acid esters etc.;And biuret body, the isocyanuric acid ester body of these compounds further can also arrange
Enumerate as with the low molecules active hydrogen-contg compound such as ethylene glycol, propylene glycol, neopentyl glycol, trimethylolpropane, castor oil
The adduct etc. of reactant, wherein from the reactive angle of the reactive group with (methyl) acrylate polymers
It sets out, the aromatic poly-isocyanate that preferably trimethylolpropane is modified, particularly preferred trimethylolpropane is modified two methylene of benzene
Group diisocyanate and trimethylolpropane modified toluene diisocyanate.
Relative to (methyl) alkyl acrylate copolymer of 100 mass parts, the blended amount of crosslinking agent is preferably 0.1~20
Mass parts, particularly preferably 1~10 mass parts.It will be aftermentioned viscous if the blended amount of crosslinking agent in above-mentioned range, is easy
The gel fraction for agent controls in preferred scope.
In addition, in order to improve the adhesion strength of adhering agent layer, tackifying resin is further preferably added.Further, since by adding this
A little tackifying resins can improve adhesion strength, tensile strength or tensile break strength, therefore, by according to used acrylic acid
Analog copolymer suitably adds tackifying resin, can adjust adhesion strength, tensile strength or tensile break strength.As making an addition to
The rosins such as the tackifying resin in the adhering agent layer of the adhesive film of the present invention, such as ester compounds that rosin or rosin can be enumerated
Resin;The terpene resins such as diterpene polymer or australene-phenol copolymer;Aliphatic category (C5 classes) or aromatic (C9 classes) etc.
Petropols;In addition styrene resin, phenolic resin, xylene resin etc. can be enumerated.Wherein, it is thin from adhesive tape
Even if type and the excellent angle of adhesion strength and from when adhesive tape to be set to the inside of electronic unit and is heated,
Adhesion strength is not easy to produce variation, the angle with heat resistance is set out, and is combined in the sticker for having used acrylic compounds sticker
In object, at least one selected from rosin resinoid, Petropols, styrene resin is preferably comprised, more preferably comprising pine
Fragrant resinoid, Petropols are particularly preferably used in mixed way rosin resinoid and Petropols.
Relative to (methyl) alkyl acrylate copolymer of 100 mass parts, the blended amount of tackifying resin is preferably 10~
70 mass parts, more preferably 20~60 mass parts, particularly preferably 50~60 mass parts.If the blended amount of tackifying resin is above-mentioned
In the range of, even if excellent if then adhesive tape is slim adhesion strength, in addition, even if adhesive tape is set to the ministry of electronics industry
The inside of part and when being heated, adhesion strength is not easy to produce variation.
In addition, according to required, adhering agent layer can contain silane coupling agent, antistatic agent, antioxidant, ultraviolet radiation absorption
Agent, light stabilizer, softening agent, filler, adjustable refractive index agent, dyestuff, pigment, antirust agent etc..
[Bao Limo ]
It is preferred that having peeling agent layer on the film base material of stripping film.In addition, the thickness of stripping film above-mentioned at this time refers to film
The thickness of base material.
There is no particular limitation for the thickness of peeling agent layer, but preferably 0.01 μm or more 2 μm hereinafter, particularly preferably 0.03
μm or more 1 μm or less.If the thickness of peeling agent layer is less than 0.01 μm, according to the material etc. for constituting peeling agent layer, existing cannot
The case where fully playing the function as peeling agent layer.On the other hand, it if the thickness of peeling agent layer is more than 2 μm, will shell
When being taken as web-like from film roll, there is a situation where that generation adhesion, generation releasing situation are bad.
As film base material, can enumerate by polyethylene terephthalate, polybutylene terephthalate (PBT), poly- naphthalene two
The polyester film of the polyester such as formic acid glycol ester formation, the polyolefin formed by polyolefin such as polyethylene, polypropylene, polymethylpentenes
Any one in the plastic foils such as film, polycarbonate membrane, polyvinyl acetate film or the stacking that is made of these two or more films
Body etc..
Peeling agent layer is for example formed by the solidfied material of the peeling agent layer formation composition comprising remover.As remover
Layer formation composition, as long as peeling agent layer can be assigned to shell the arbitrary layer being laminated on peeling agent layer from stripping film
From function, there is no particular limitation.As remover, such as silicone remover, the stripping of chain alkyl class can be enumerated
From agent and alcohol acids remover etc..As the method that peeling force is set as prescribed limit, silicone remover is preferably used as stripping
From agent, acrylic compounds sticker is used as to form the sticker of adhering agent layer.
As silicone remover, addition reaction-type silicone, condensation reaction type silicone, energy ray-curable silicon can be enumerated
Ketone.In addition, in order to adjust peeling force, can also by the dimethyl silicone polymer of non-functional, phenyl modified silicone, silicone resin,
Silica, cellulose compound are used as additive.
Other than adhesive film 2, the material for colouring each layer used in adhesive film 3 is as described below.
[Zhe Seceng ]
For dyed layer, as long as cooperation colours the color for the electronic unit that adhesive tape is attached or with reconciliation
Color is coloured, then there is no particular limitation, but never make apparent uneven eye-catching, the imparting design of graphite flake etc.
Angle is set out, preferably black.
Dyed layer preferably comprises coloured material and binder resin.As binder resin, such as amino first can be enumerated
Acid ester resin, epoxy resin, polyester resin, polyester urethane resin etc..These binder resins can be used alone,
It can use simultaneously two or more.Wherein, from the excellent angle of flexibility, binder resin be more preferably polyester resin,
At least one of polyester urethane resin, more preferably polyester urethane resin.The glass of above-mentioned binder resin
Glass transition temperature (Tg) is preferably -30~10 DEG C.
Dyed layer is preferably cured by curing agent.There is no particular limitation for curing agent, can coordinate binder resin
And it suitably selects.When binder resin is polyester urethane resin, as curing agent, such as isocyanates can be enumerated and consolidated
Agent etc..In addition, solid there are amine hardener when hydroxyl or isocyanate group, can be used to be used as in polyester urethane resin
Agent.These curing agent can be used alone, and can also use simultaneously two or more.
As coloured material, known usual pigments or dyes can be used.When dyed layer is black, such as carbon can be enumerated
It is black;For white when, titanium oxide, calcium carbonate, barium sulfate can be enumerated;For yellow when, yellow ferric oxide can be enumerated;For red when,
Red ferric oxide can be enumerated;For blue when, cyanine blue can be enumerated;For silver color when, aluminium powder can be enumerated;For pearl when, can
Enumerate mica titanium valve etc..Wherein, since the concealment of carbon black is excellent, preferably.The content of coloured material in dyed layer
There is no particular limitation, can be appropriately configured according to concealment as a purpose etc..Such as dyed layer preferably comprises bonding
Agent resin and relative to 100 mass parts binder resin be 10 mass parts more than 70 coloured materials below mass part.If
The content of coloured material is more than 70 mass parts, then there is a possibility that reduce with the adherence of roughened layer, therefore not preferably.On
It states coloured material and commercial goods can also be used, the commercial goods of the coloured material as black, such as UTCO- can be enumerated
591BLACK(Dainichiseika Color&Chemicals Mfg.Co., Ltd. manufacture) etc..
According to required, dyed layer can also further contain transparent resin (medium), antioxidant, ultra-violet absorber, light
The additives such as stabilizer.
[Roughened Ceng ]
About roughened layer, if the average height Rc of arithmetic average roughness Ra, roughness curve element and 10 points it is flat
Equal roughness Rzjis is required range, then to its material, there is no particular limitation.Roughened layer can be by carrying out corona discharge
Coarse roller surface is crimped on the surface of roughened layer to transfer the roughness of roller surface by the method for processing, blasting treatment
Method etc., to adjust Ra, Rc and Rzjis of roughened layer.
Roughened layer preferably comprises particle and binder resin, more preferably comprising in inorganic particle and organic granular at least
Any one, further preferably includes inorganic particle and binder resin.By adjusting the flat of inorganic particle and/or organic granular
Equal grain size, blended amount etc., can also easily adjust above-mentioned roughness etc..The average grain diameter of inorganic particle and/or organic granular
The thickness of roughened layer can be more than.In roughened layer 15, inorganic particle can be exposed, binder resin can also be exposed.
The average grain diameter of inorganic particle is 10 μm of 50nm or more or less.
There is no particular limitation for average grain diameter, can be measured by coulter counter method.For example, will be counted by Kurt
The peak value that method measures is as average grain diameter.
As binder resin, there is no particular limitation, can enumerate thermoplastic resin, thermosetting resin, light-cured resin
Deng, such as carbamate resins, epoxy resin, polyester resin, polyester urethane resin can be enumerated etc..These are bonded
Agent resin can be used alone, and also can be used simultaneously two or more.Wherein, since flexibility is excellent, preferred thermoplastic resin is excellent
Select carbamate resins, polyester resin, polyester urethane resin.When roughened layer includes particle, from the angle of compatibility
Degree sets out, and binder resin is more preferably at least one of polyester resin, polyester urethane resin.
Roughened layer can be cured by curing agent.There is no particular limitation for curing agent, binder resin can be coordinated and
Suitably selected.When binder resin is polyester urethane resin, as curing agent, such as isocyanates can be enumerated
Curing agent etc..In addition, can amine hardener be used as solidification there are when hydroxyl or isocyanate group in polyester urethane resin
Agent.These curing agent can be used alone, and can also use simultaneously two or more.In addition, according to required, can contain in roughened layer
There are the additives such as the antioxidant being again included in dyed layer, ultra-violet absorber, light stabilizer.
[The Zhi Zaofangfa ] of adhesive film;
Hereinafter, being illustrated to the manufacturing process of the adhesive film of present embodiment, but not limited to this.Fig. 3 is to this
The schematic diagram that the manufacturing process of the adhesive film of embodiment illustrates.In the present embodiment, it is manufactured by roll-to-roll mode
Adhesive film 2.Such as adhesive film 2 is manufactured in an atmosphere.Arrow DR in figure indicates the traffic direction of film.Traffic direction DR corresponds to
Long side direction DL.
Stripping film 30 by roll out roller 211 from then by continuously release from rolling out roller 211, drawn via deflector roll 250a
It is directed at coating mechanism 220.Peeling agent layer is formed on the surface (surface for forming adhering agent layer 20) of stripping film 30.
By coating mechanism 220, in the coating fluid for being coated with adhering agent layer 20 from the stripping film 30 for rolling out the releasing of roller 211.
Stripping film 30 with adhering agent layer 20 is directed to hothouse 230 via deflector roll 250b, at an established temperature, for example (,) it is dry
More than 10 seconds kinds 5 minutes or less.Being formed as a result, has stripping film 30 and adhering agent layer 20, stripping with adhering agent layer 20
Film 30.Stripping film 30 with adhering agent layer 20 is directed to via deflector roll 250c attaches mechanism 240.
By attach mechanism 240, resin film 11 be attached at be directed to attach mechanism 240, have adhering agent layer 20
Stripping film 30 adhering agent layer 20 side on.For example, with adhering agent layer 20 stripping film 30 be clamped in roller 240b with
Between roller 240c, resin film 11 rolling out roller 240a between roller 240b and roller 240c by releasing.
Resin film 11 is attached on adhering agent layer 20 as a result, and being formed has stripping film 30, adhering agent layer 20 and resin film
11 adhesive film 2.Then, adhesive film 2 is via deflector roll 250d, by work beam 210 from then be taken up roller 210 and continuously roll up
It takes.
In addition, for the coating method of coating mechanism 220, such as scraper rubbing method, scraper for coating method can be suitably used
(knife coat method), roller coating method, scraping blade rubbing method (blade coat method), die coating methods (die
Coating method), any one method in gravure coating method etc..
When adhesive film 2 further has dyed layer 12 and/or roughened layer 15, after manufacturing adhesive film 2, by dyed layer 12
And/or roughened layer 15 is laminated on resin film 11.Or chromatograph 12 and/or roughened is stacked on 11 upper layer of resin film in advance
Then layer attaches stripping film 30 to manufacture coloring adhesive film 3.
Stacked the method for chromatograph 12 and/or roughened layer 15 on 11 upper layer of resin film, there is no particular limitation.Dyed layer 12
And/or the coating fluid of roughened layer 15 is when being ink, preferably by printing the method being laminated.As mode of printing, may be used also
Letterpress, aniline printing, dry type hectographic printing (dry offset printing), intaglio printing is suitably used
(gravure printing), intaglio plate hectographic printing (gravure offset printing), hectographic printing, silk-screen printing etc.
Any one gimmick in known ways customary etc..Wherein, intaglio printing mode is preferred embodiment, by resin film 11
It repeats print 2~4 times and is laminated, to reduce pin hole.
Embodiment
Hereinafter, the present invention is further specifically described by embodiment etc., but the scope of the present invention is not by this
The restriction of a little embodiments etc..The effect of the adhesive film of present embodiment is indicated in table 1.
[Table 1]
[Embodiment 1]
The preparation > of < adherence composition solutions
By by the acrylic acid -2- hydroxyls of the butyl acrylate of 95.5 mass parts, the vinylacetate of 3 mass parts, 1 mass parts
The acrylic acid copolymer of base ethyl ester and 0.5 mass parts prepares the acrylate copolymer that weight average molecular weight is 1000000.Then, lead to
It crosses and (is scaled solid constituent relative to 100 mass parts;It is same as below) the acrylate copolymer, add 25 mass parts hydrogen
Change rosin ester (Arakawa Chemical Industries, Ltd. manufactures, PINECRYSTAL KE-100, softening point:100
DEG C), (Arakawa Chemical Industries, Ltd. manufactures, Pensel D-135 are soft for the newtrex esters of 4 mass parts
Change point:135 DEG C) and 24 mass parts petroleum resinoid (Mitsui Che micals, Inc. manufacture, FTR6100, softening point:
95 DEG C), and mixed, adhesion ingredient is consequently formed.Adhesion ingredient is dissolved in toluene, it is 13 matter to prepare solid component concentration
Measure the adhesion agent solution of %.
The preparation > of < dyed layer coating fluids
As dyed layer coating fluid, used as carbamates, solid component concentration be 59 mass %'s
Dainichiseika Color&The UTCO-591Black (NX) of Chemicals Mfg.Co., Ltd. manufactures, utilizes acetic acid second
Ester is diluted it.The solid component concentration of dyed layer coating fluid is adjusted to 10 mass %, viscosity-adjusting agent is
15mPa·s。
The preparation > of < roughened layer coating solution
Roughened layer coating solution is prepared by following manner, i.e.,:Relative to 100 mass parts (be scaled solid at
Point) polyester resin (TOYOBO CO., the LTD. manufacture as binder resin:Vylon 20SS), 22 mass parts of addition
Silicon dioxide microparticle (Tosoh Silica Corporation manufactures, NIPSIL SS50B, 2.1 μm of average grain diameter), 100 mass
Barium sulfate particles (Sakai Chemical Industry Co., the Ltd. manufactures of part:BMH, 2.5 μm of average grain diameter), use first
Benzene/methyl ethyl ketone (MEK) mixed solvent (toluene:MEK (mass ratio)=50:50) solid component concentration is adjusted to 20 mass %.
The manufacture > of < adhesive films
Relative to the solid constituent in the adhesion agent solution of 100 mass parts, 1 mass parts (being scaled solid constituent) are added
As crosslinking agent trimethylolpropane modified toluene diisocyanate (Nippon Polyurethane Industry Co.,
Ltd. manufacture, CORONATE L), obtain adherence composition solution (solid component concentration is 13 mass %).
Silicone remover will be used to have carried out the stripping of lift-off processing to the single side of polyethylene terephthalate film
(SP-PET251130 of LINTEC Corporation manufactures, the Ra of the lower surface 30d of stripping film is 34nm to film, and Rc is
The Young's modulus of 400nm, Rzjis 672nm, stripping film are 4200MPa, and thickness is 2.5 × 10-5M, the Young's modulus of stripping film
Product with thickness is 0.105MPam) it releases, in such a way that the thickness after drying becomes 2 μm, using knife type coater at it
After being coated with adherence composition solution on lift-off processing face, obtained film is carried out at 90 DEG C to heat treatment in 1 minute,
The adhering agent layer that thickness is 2 μm is formed on stripping film.Then, in the exposed surface side of above-mentioned coating layer, fitting is used as resin film
Polyethylene terephthalate film (Toray Industries, Inc., ET2F51L, 2 μm of thickness, Young's modulus
4200MPa), obtained adhesive film is coiled into web-like.
Then, it is cured 7 days, is manufactured by removing under conditions of 23 DEG C, 50%RH by the way that the adhesive film of web-like will be coiled into
Film (thickness:25 μm)/adhering agent layer (thickness:2 μm)/resin film (thickness:2 μm) constitute adhesive film.
Then, the adhesive film for being rolled into web-like is released, is coated with dyed layer painting on surface resin film by gravure coater
Cloth liquid, is further heated, and the dyed layer that thickness is 1 μm is formed on adhesive film.Further, with the thickness after drying
It will be obtained after being coated with roughened layer coating solution in coloring layer surface using gravure coater as 1 μm of mode
Film carries out heat treatment in 1 minute at 90 DEG C, forms the roughened layer that thickness is 1 μm.It then, will be by stripping film (thickness:
25 μm)/adhering agent layer (thickness:2 μm)/resin film (thickness:2 μm)/dyed layer (thickness:1 μm)/roughened layer (thickness:1μm)
The adhesive film with dyed layer constituted batches as web-like.
The measurement > of < Young's modulus
200mm/ minutes are selected as test speed, the poplar of stripping film or resin film is measured according to JIS K-7127 (1999)
Family name's modulus.
The measurement > of < thickness
The thickness of each layer is measured using film thickness gauge (the film thickness gauge Digimicro MH-15M of Nikon Corporation manufactures)
Degree.
The measurement > of the peeling force relative to adhering agent layer of < stripping films
It is the size that width is 50mm, length is 150mm by adhesive film severing, sample is made, in 23 DEG C, the item of 50%RH
It placed under part 1 hour.The sample and the surface of stripping film opposite side are fixed on alkali-free glass using double faced adhesive tape
On (Corning Incorporated manufactures, EAGLE XG), cupping machine (ORIENTEC CORPORATION systems are used
Make, TENSILON), under conditions of peeling rate is 300mm/min, peel angle is 180 °, measure stripping when film is peeled off
Intensity.For the condition in addition to the condition for being recorded in this, according to JIS Z0237:2009 are determined.Then, under
It states calculating formula to be converted by above-mentioned peel strength, so as to find out peeling force (mN/25mm), (W is the width (mm) of test film:
50)。
Peeling force (mN/25mm)=peel strength (mN/50mm) × 25 ÷ W (calculating formula)
The measurement > of the adhesion strength relative to stainless steel plate of < adhesive tapes
Severing adhesive film makes the sample of 25mm wide, 250mm long.Stripping film is peeled off from the sample, uses the rubber of 2kg
The sample for exposing adhering agent layer is attached on stainless steel plate (SUS304) by rubber roller.Then, in 23 DEG C, the condition of 50%RH
After lower placement 24 hours, using cupping machine (ORIENTEC CORPORATION are manufactured, TENSILON), according to JISZ
0237:2009, measure the adhesion strength (N/25mm) under conditions of peeling rate is 300mm/min, peel angle is 180 °.
< surface roughness measurements >
It is pressed using contact surface roughometer (Mitutoyo Corporation are manufactured, trade name " SV3000S4 ")
The average height Rc of the roughness curve element of the lower surface 30d of stripping film is measured according to JIS B 0601-2001.
The stripping suitability > of < stripping films
A:There is no problem, and stripping film is removed on ground from adhering agent layer.
C:Stripping film is difficult to remove from adhering agent layer.
The attaching suitability > of < adhesive tapes
In adhesive film, the starting point part of stripping is made between stripping film and adhering agent layer, by stripping film from sticker
It is removed on layer, under conditions of environment temperature is 23 DEG C, humidity is 50%, carries out one on graphite flake using the roller of 2kg and come
Pressurization is returned to be attached.By visual observations, evaluated by benchmark below.
A:After peeling stripping film off, fold and relaxation are not generated on adhesive tape, also bubble-free after attaching, is good.
C:When removing stripping film, fold and relaxation are generated on adhesive tape.And/or on the adhesive tape after attaching
Produce fold and relaxation.
The processing suitability > of < adhesive films
In the manufacturing process of adhesive film, evaluated by benchmark below.
A:It can be processed without problems.
C:In the process of a part, fold and/or relaxation etc. are generated when carrying, and problem is produced in processing.
In embodiment 1, it is " A " to remove suitability, attach suitability and process suitability.
[Embodiment 2]
In addition to stripping film is changed to using silicone remover be 3.8 × 10 to thickness-5The poly terephthalic acid second two of m
The single side of alcohol ester film has carried out stripping film (SP-PET 381130 of LINTEC Corporation manufactures, the stripping of lift-off processing
The Ra of the lower surface 30d of film is 34nm, Rc 320nm, Rzjis 672nm, and the Young's modulus of stripping film is 4200MPa, thickness
It is 3.8 × 10-5M, the Young's modulus of stripping film and the product of thickness are 0.160MPam) other than, with same as Example 1
Mode has made the adhesive film with dyed layer.
In example 2, it is " A " to remove suitability, attach suitability and process suitability.
[Embodiment 3]
Other than being not provided with roughened layer, in the same manner as example 1, the adhesion with dyed layer has been made
Film.
In embodiment 3, it is " A " to remove suitability, attach suitability and process suitability.
[Embodiment 4]
In addition to stripping film is changed to using silicone remover be 2.5 × 10 to thickness-5The poly terephthalic acid second two of m
The single side of alcohol ester film has carried out stripping film (SP-PET 251031 of LINTEC Corporation manufactures, stripping film at stripping
Lower surface 30d Ra be 34nm, Rc 400nm, Rzjis 672nm, the Young's modulus of stripping film is 4200MPa, thickness is
2.5×10-5M, the Young's modulus of stripping film and the product of thickness are 0.105MPam) other than, with side same as Example 1
Formula has made the adhesive film with dyed layer.
In example 4, it is " A " to remove suitability, attach suitability and process suitability.
[Embodiment 5]
In addition to stripping film is changed to using silicone remover be 2.5 × 10 to thickness-5The poly terephthalic acid second two of m
The single side of alcohol ester film has carried out stripping film (SP-PET 252120 of LINTEC Corporation manufactures, the stripping of lift-off processing
The Ra of the lower surface 30d of film is 34nm, Rc 400nm, Rzjis 672nm, and the Young's modulus of stripping film is 4200MPa, thickness
It is 2.5 × 10-5M, the Young's modulus of stripping film and the product of thickness are 0.105MPam) other than, with same as Example 1
Mode has made the adhesive film with dyed layer.
In embodiment 5, stripping suitability, attaching suitability and processing suitability are " A ".
As described in the foregoing description, the evaluation of " C " is not equivalent in Examples 1 to 5.
[Comparative example 1]
In addition to stripping film is changed to using silicone remover be 7.5 × 10 to thickness-5The poly terephthalic acid second two of m
The single side of alcohol ester film has carried out stripping film (SP-PET 751130 of LINTEC Corporation manufactures, the stripping of lift-off processing
The Rc of the lower surface 30d of film is 290nm, and the Young's modulus of stripping film is 4200MPa, thickness is 7.5 × 10-5M, the poplar of stripping film
Family name's modulus and the product of thickness are 0.315MPam) other than, in the same manner as example 1, make with dyed layer
Adhesive film.
In comparative example 1, though stripping suitability and processing suitability are " A ", due to Young's modulus and the thickness of stripping film
The product of degree is excessively high, therefore when removing stripping film, and fold and relaxation are generated on adhesive tape, and it is " C " to attach suitability.
[Comparative example 2]
In addition to stripping film is changed to using silicone remover be 7.5 × 10 to thickness-5The poly terephthalic acid second two of m
The single side of alcohol ester film has carried out stripping film (SP-PET 752150 of LINTEC Corporation manufactures, the stripping of lift-off processing
The Rc of the lower surface 30d of film is 290nm, and the Young's modulus of stripping film is 4200MPa, thickness is 7.5 × 10-5M, the poplar of stripping film
Family name's modulus and the product of thickness are 0.315MPam) other than, in the same manner as example 1, make with dyed layer
Adhesive film.
In comparative example 2, though processing suitability is " A ", since peeling force is excessively high, stripping film is difficult to be stripped,
It is " C " to remove suitability.Further, since the product of the Young's modulus of stripping film and thickness is excessively high, in stripping stripping film
When, fold and relaxation are generated on adhesive tape, it is " C " to attach suitability.
[Comparative example 3]
In addition to stripping film is changed to using silicone remover be 3.8 × 10 to thickness-5The poly terephthalic acid second two of m
The single side of alcohol ester film has carried out stripping film (SP-PET 382150 of LINTEC Corporation manufactures, the stripping of lift-off processing
The Rc of the lower surface 30d of film is 320nm, and the Young's modulus of stripping film is 4200MPa, thickness is 3.8 × 10-5M, the poplar of stripping film
Family name's modulus and the product of thickness are 0.160MPam) other than, in the same manner as example 1, make with dyed layer
Adhesive film.
In comparative example 3, though processing suitability is " A ", since peeling force is excessively high, stripping film is difficult to be stripped,
It is " C " to remove suitability.
More than, embodiments of the present invention are illustrated, but the present invention can be subject to various changes completely, and not
It is only limitted to above-mentioned embodiment.
Claims (8)
1. a kind of adhesive film, wherein the adhesive film has:
Stripping film and adhesive tape comprising resin film and adhering agent layer,
The adhering agent layer there is the first bonding plane for fitting on the resin film and fit on the stripping film second
Bonding plane,
The product of the Young's modulus MPa at 25 DEG C and thickness m of the stripping film be 0.3MPam hereinafter,
The overall thickness of the resin film and the adhering agent layer be 10 μm hereinafter,
Under the peeling rate of 300mm/min, the peeling force relative to second bonding plane of the stripping film is 40mN/
25mm or less.
2. adhesive film according to claim 1, wherein
Stripping film Young's modulus with 500MPa or more at 25 DEG C.
3. adhesive film according to claim 1 or 2, wherein
Resin film Young's modulus with 500MPa or more at 25 DEG C.
4. adhesive film according to claim 1, wherein
The stripping film is 500nm with the average height Rc of the roughness curve element on the surface of the adhering agent layer opposite side
Below.
5. adhesive film according to claim 1, wherein
The thickness of the resin film is 1 μm or more 6 μm or less.
6. adhesive film according to claim 1, wherein
The thickness of the adhering agent layer is 1 μm or more 5 μm or less.
7. adhesive film according to claim 1, wherein
Under conditions of peel angle is 180 °, peeling rate is 300mm/min, the adhesive tape relative to stainless steel plate
Adhesion strength be 1N/25mm or more 10N/25mm or less.
8. adhesive film according to claim 1, wherein
The adhering agent layer and the resin film are attached on the surface of graphite flake.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017043760A JP6224284B1 (en) | 2017-03-08 | 2017-03-08 | Adhesive film |
| JP2017-043760 | 2017-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108690512A true CN108690512A (en) | 2018-10-23 |
Family
ID=60213976
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721356965.XU Active CN207619318U (en) | 2017-03-08 | 2017-10-20 | Adhesive film |
| CN201710984298.8A Withdrawn CN108690512A (en) | 2017-03-08 | 2017-10-20 | Adhesive film |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721356965.XU Active CN207619318U (en) | 2017-03-08 | 2017-10-20 | Adhesive film |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6224284B1 (en) |
| CN (2) | CN207619318U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111816077A (en) * | 2020-07-13 | 2020-10-23 | 武汉华星光电半导体显示技术有限公司 | Foldable display module |
| CN113226754A (en) * | 2019-03-27 | 2021-08-06 | 琳得科株式会社 | Sheet for processing workpiece |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023032966A (en) * | 2021-08-27 | 2023-03-09 | 日東電工株式会社 | laminate |
| JP2023032965A (en) * | 2021-08-27 | 2023-03-09 | 日東電工株式会社 | laminate |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6016323B2 (en) * | 2010-07-21 | 2016-10-26 | Dic株式会社 | Double-sided adhesive tape |
| JP2013053294A (en) * | 2011-08-09 | 2013-03-21 | Sekisui Chem Co Ltd | Connection structure |
| JP6003037B2 (en) * | 2011-09-29 | 2016-10-05 | Dic株式会社 | Colored adhesive tape |
| JP5903984B2 (en) * | 2012-03-29 | 2016-04-13 | Dic株式会社 | Colored adhesive tape and graphite composite sheet |
| JP2014189778A (en) * | 2013-03-28 | 2014-10-06 | Lintec Corp | Double-sided tacky sheet and coiled body |
| JP6344974B2 (en) * | 2014-05-27 | 2018-06-20 | 積水化学工業株式会社 | Colored single-sided adhesive tape |
| JP2016129988A (en) * | 2015-01-15 | 2016-07-21 | 積水化学工業株式会社 | Optical resin sheet |
-
2017
- 2017-03-08 JP JP2017043760A patent/JP6224284B1/en active Active
- 2017-10-20 CN CN201721356965.XU patent/CN207619318U/en active Active
- 2017-10-20 CN CN201710984298.8A patent/CN108690512A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113226754A (en) * | 2019-03-27 | 2021-08-06 | 琳得科株式会社 | Sheet for processing workpiece |
| CN111816077A (en) * | 2020-07-13 | 2020-10-23 | 武汉华星光电半导体显示技术有限公司 | Foldable display module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN207619318U (en) | 2018-07-17 |
| JP2018145340A (en) | 2018-09-20 |
| JP6224284B1 (en) | 2017-11-01 |
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Application publication date: 20181023 |
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