CN107849398A

CN107849398A - Adhesive tape, fin, the manufacture method of electronic equipment and adhesive tape

Info

Publication number: CN107849398A
Application number: CN201680042385.5A
Authority: CN
Inventors: 山上晃; 今井克明
Original assignee: Dainippon Ink and Chemicals Co Ltd
Current assignee: DIC Corp
Priority date: 2015-08-06
Filing date: 2016-08-02
Publication date: 2018-03-27
Anticipated expiration: 2036-08-02
Also published as: JP2018127634A; WO2017022749A1; JPWO2017022749A1; KR102025167B1; CN107849398B; JP6601522B2; KR20180020218A

Abstract

The present invention relates to a kind of adhesive tape, it is in adhesive tape of at least one face (a) side of supporter (A) with the adhesive part (B) of more than 2, it is characterized in that, the region without adhesive part (B) between the adhesive parts of above-mentioned more than 2 (B) be present, above-mentioned zone communicates with the end of above-mentioned adhesive tape.The present invention can provide it is a kind of bubble can be rapidly discharged from the interface with adherend so as to prevent in above-mentioned interface entrapped air pockets, and the slim adhesive tape that bonding force is excellent, it is therefore useful.

Description

Adhesive tape, fin, the manufacture method of electronic equipment and adhesive tape

Technical field

The present invention relates to the slim adhesive tape that can be used in the manufacturing site location such as electronic equipment.

Background technology

For adhesive tape because workability is excellent, bonding reliability is also high, therefore is widely used in such as OA equipment, household appliances Deng the manufacturing site location of electronic equipment.

For above-mentioned electronic equipment, multifunction, miniaturization and slimming are required in recent years, especially for personal electricity The portable electronic piece such as brain, DV, electronic notebook, mobile phone, PHS, smart mobile phone, game station, e-book terminal and Speech, it is desirable to further miniaturization, slimming.It is accompanied by this, adhesive tape for forming above-mentioned portable electronic piece terminal etc., in addition Also slimming is required.

As above-mentioned slim adhesive tape, it is known that following double-sided adhesive tape, it is to have sticker in the two-sided of core The double-sided adhesive tape of layer, such as weight average molecular weight is more than 700,000 by the adhering agent layer, the content of butyl acrylate units is More than 90 mass % acrylate based copolymer and tackifier is as principal component, and the content of the tackifier is 40~60 Total gross thickness of quality %, the core and two-sided adhering agent layer is less than 30 μm, and the thickness of two-sided adhering agent layer is distinguished For 2~10 μm (for example, referring to patent document 1.).

But in the case where require that the further slimming of above-mentioned adhesive tape, by above-mentioned slim adhesive tape with When adherend is bonded, easily in their interface entrapped air pockets, as a result, causing sometimes as caused by expansion of adhesive tape etc. Bad order.

Further, since above-mentioned remaining bubble turns into thermal resistance, thus by above-mentioned slim adhesive tape be used for radiating component with In the case of the fitting of generating component etc., cause the reduction of thermal diffusivity sometimes.

In addition, in order to realize above-mentioned slimming, in the slimming that also studied adhering agent layer, for slim and be provided only with For the adhering agent layer of the release path of above-mentioned bubble, sufficient bonding force in practicality can not be kept sometimes.

Prior art literature

Patent document

Patent document 1：Japanese Unexamined Patent Publication 2007-169327 publications

The content of the invention

The invention problem to be solved

The problem to be solved by the present invention is that, there is provided it is a kind of can rapidly be discharged from the interface with adherend bubble from And prevent in above-mentioned interface entrapped air pockets, and the adhesive tape that bonding force is excellent.

For solving the method for problem

The present inventor etc. solves above-mentioned problem using following adhesive tape, and it is at least one face (a) in supporter (A) Adhesive tape of the side with the adhesive part (B) of more than 2, it is characterised in that exist between the adhesive parts of above-mentioned more than 2 (B) Region without adhesive part (B), above-mentioned zone communicate with the end of above-mentioned adhesive tape.

Invention effect

The adhesive tape of the present invention from the interface with adherend due to be very slim, rapidly discharging bubble, above-mentioned Interface is not easy entrapped air pockets, and bonding force is excellent, therefore may be suitably used to the electronics such as forming portable electronic piece terminal and set The generating components such as the radiating components such as standby shell, graphite flake and rechargeable battery it is bonding.

Brief description of the drawings

Fig. 1 is the top view of the adhesive tape of the adhesive part with almost diamond shape from the adhesive part side of adhesive tape.

Fig. 2 is the top view of the adhesive tape of the adhesive part with circular from the adhesive part side of adhesive tape.

Fig. 3 is the top view for having from the adhesive part side of adhesive tape the substantially adhesive tape of the adhesive part of hexagon.

Fig. 4 is the top view for having from the adhesive part side of adhesive tape the substantially adhesive tape of the adhesive part of quadrangle.

Fig. 5 is the side view of graphite composite sheet.

Fig. 6 is the top view in the face with adhesive part of the adhesive tape obtained in embodiment 20.

Fig. 7 is the top view in the face with adhesive part of the adhesive tape obtained in comparative example 2.

Embodiment

The adhesive tape of the present invention is with the adhesive part (B) of more than 2 at least one face (a) side of supporter (A) Adhesive tape, it is characterised in that the region without adhesive part (B) between the adhesive parts of above-mentioned more than 2 (B) be present, it is above-mentioned Region communicates with the end of above-mentioned adhesive tape.

As the embodiment of the adhesive tape of the present invention, at least one face (a) in above-mentioned supporter (A) can be enumerated Side directly has the adhesive tape of the adhesive part (B) of more than 2 or at least one face (a) side of above-mentioned supporter (A) across it His layer has above-mentioned adhesive part (B) adhesive tape.

In the case of using double-sided adhesive tape as above-mentioned adhesive tape, it can use：With the tacky on two sides formed as follows Band, i.e. in two faces (a) side of above-mentioned supporter (A) with the above-mentioned specific adhesive part (B) of more than 2, at above-mentioned 2 The region without adhesive part (B) between adhesive part (B) above be present, above-mentioned zone communicates with the end of above-mentioned adhesive tape； Or formed with following, i.e. in a face (a) side of above-mentioned supporter (A) with the above-mentioned specific adhesion of more than 2 , there is the region without adhesive part (B) in portion (B), above-mentioned zone glues with above-mentioned between the adhesive parts of above-mentioned more than 2 (B) The end of adhesive tape communicates, also, in another surface side of above-mentioned supporter (A), has the tacky on two sides of adhesion coating in its whole face Band.

Between the adhesive parts of above-mentioned more than 2 (B), have in the absence of the composition for forming above-mentioned adhesive part (B) region or Person can be not play region existing for the degree of adherence.Therefore, the situation of the adhesive tape of the present invention is observed from the side Under, it was observed that relative to above-mentioned supporter (A) face (a), above-mentioned adhesive part (B) forms convex form.

In addition, the adhesive tape of the present invention has following form：Not having between the adhesive part (B) of above-mentioned more than 2 is viscous The part for the region in portion (B) and the end (edge part) of adhesive tape communicates.By using the adhesive tape with above-mentioned composition, So as to which when by applying adhesive tape in adherend, bubble is by above-mentioned zone and outside from the interface of adhesive tape and adherend Portion discharges, therefore can prevent the bad order as caused by expansion of adhesive tape etc., and can keep excellent heat conductivity, Bonding force etc..

As the adhesive tape of the present invention, preferably using the adhesive tape below 50 μm of gross thickness, particularly preferably using 20 μm with Under adhesive tape, more preferably using 2 μm~15 μm of adhesive tape, 3 μm~10 μm of adhesive tape is further preferably used, to example In terms of the slimming of such as portable electronic piece terminal contributes, 3 μm~6 μm of adhesive tape is particularly preferably used.The viscose glue of the present invention Band is even if described above very slim, also keeps excellent bubble to discharge easiness, and possesses excellent bonding force, heat biography The property led.It should be noted that the gross thickness of above-mentioned adhesive tape refers to according to JIS K6783, by using the method for amesdial, It is the thickness of adhesive tape determined under conditions of plane, its a diameter of 5mm and load are 1.23N in the contact surface of amesdial, no Thickness including release liner.Above-mentioned thickness is measured such as can utilize the thickness gauge TH-102 of Tester industries.

It is more excellent preferably using the adhesive tape of the bonding force with 1N/20mm~12N/20mm as the adhesive tape of the present invention Choosing is being obtained even if to be slim also easily from glued using the adhesive tape of the bonding force with 1.5N/20mm~10N/20mm The interface of body and adhesive tape removes bubble, and possesses the aspect of the adhesive tape of excellent bonding force, and preferably using has 3N/ The adhesive tape of 20mm~8N/20mm bonding force.On the other hand, in the case where requiring further excellent cementability, make For above-mentioned adhesive tape, more preferably using the adhesive tape of the bonding force with 4N/20mm~10N/20mm, more preferably using having The adhesive tape of 4.5N/20mm~8N/20mm bonding force.

It should be noted that above-mentioned bonding force refers to the value according to JISZ0237 measure.Specifically, above-mentioned bonding force is The value determined by the following method：By the tool using the polyethylene terephthalate film of 25 μm of thickness as the adhesive tape of backing Have that the face of adhesive part (B) is overlapping with cleaning and smooth stainless steel plate (BA plates), by reciprocal using 2kg rollers to its upper surface Once and after pressurizeing, after being placed 1 hour or 24 hours under conditions of 23 DEG C and 50%RH, with 0.3m/min on 180 ° of directions Speed peel off above-mentioned adhesive tape.It should be noted that above-mentioned backing is carried out to the surface without above-mentioned adhesive part (B), and The face of adhesive part (B) with the constitutive requirements as the present invention is not carried out.In addition, above-mentioned adhesive tape for it is two-sided have it is above-mentioned In the case of the adhesive tape of adhesive part (B), backing is used as using the face with its any one adhesive part (B).

As the present invention adhesive tape, even if for it is slim can also prevent adherend, supporter (A) because repulsion etc. draws Rise through when peel off, element falling etc., even if being also prevented from above-mentioned peeling etc. when particularly using at higher temperatures, preferably make The adhesive tape for being below 2mm with bonding confining force, more preferably using below 0.5mm adhesive tape, further preferably using 0.1mm Following adhesive tape.

It should be noted that above-mentioned bonding confining force refers to the value according to JISZ0237 measure.Specifically, above-mentioned bonding Confining force is following value, i.e.,：By the face using the aluminium foil of 50 μm of thickness as the adhesive tape of backing with adhesive part (B) and cleaning And smooth stainless steel plate (hairline) is overlapping, after being pressurizeed by being made a round trip to its upper surface using 2kg rollers, 23 DEG C and 50%RH under conditions of place 1 hour, as test film.Then, in the environment of 100 DEG C, above-mentioned test film will be formed Stainless steel plate be fixed on vertical direction, apply the state of 100g load in the bottom for forming the adhesive tape of above-mentioned test film After lower placement 24 hours, the offset distance of above-mentioned stainless steel plate and adhesive tape is determined so as to the value obtained with slide measure.

[supporter (A)]

As the supporter (A) for the adhesive tape for forming the present invention, preferably using the supporter of 1 μm~20 μm of thickness, more It is preferred that using the supporter of 1 μm~10 μm of thickness, preferably using the supporter of 1 μm~4 μm of thickness, 1.5 μm~2.5 are used μm thickness supporter when, adhesive tape can be thinned, and can from the face with above-mentioned adhesive part (B) with it is glued The interface of body easily removes bubble, as a result, can more efficiently prevent from outer as caused by expansion of above-mentioned adhesive tape etc. The reduction of the performances such as bad, heat conductivity, bonding force is seen, therefore more preferably.

As above-mentioned supporter (A), the supporter of the sheet for example obtained using resin can be used.

As available for the above-mentioned resin for manufacturing above-mentioned supporter (A), it can be used alone or be applied in combination and be two or more Following material：Such as polyethylene terephthalate (PET), PEN (PEN), poly terephthalic acid The polyester such as butanediol ester (PBT)；The acid amides system resins such as polyamide (nylon), fully aromatic polyamide (aromatic polyamides)；Poly- third The acrylic resins such as olefin(e) acid butyl ester, polyethyl acrylate, polymethyl methacrylate (PMMA)；Polystyrene, acrylonitrile-benzene The phenylethylene resin series such as ethylene copolymer (AS resins), acrylonitrile-butadiene-styrene copolymer (ABS resin)；Polyether-ether-ketone (PEEK), the polyether-ketone such as PEKK；Polyether sulfone (PES), polysulfones, polyvinyl chloride (PVC), polyphenylene sulfide (PPS), polyimides (PI), polyamidoimide, PEI (PEI), polyesterimide, makrolon (PC), polyacetals, polyarylether (polyphenyl Ether etc.), polyphenylene sulfide, polyarylate, poly- aryl, polyurethane, epoxy system resin etc..

Wherein, as above-mentioned supporter (A), lack from the inequality of thickness, tensile strength, excellent in workability, economical (cost) Aspect is set out, preferably using polyester film, more preferably using polyethylene terephthalate film.Above-mentioned polyester film use is through twin shaft When stretching the polyester film of gained, supporter (A) and the intensity using its obtained adhesive tape can be further improved, thus it is excellent Choosing.

Above-mentioned supporter (A) can be by manufacturing by above-mentioned resin forming is sheet.Above-mentioned resin is used as using polyester When, above-mentioned supporter (A) can manufacture for example, by following methods.

First, by dry or undried polyester sheet, the colouring agent with including high concentration as needed or colouring agent Masterbatch carries out melting mixing using mixing extruder etc..

Then, above-mentioned mixture is extruded from die head, solidifies its chilling on rotation chilling roll, so as to obtain substantially For the non-stretched polyester film of noncrystalline state.

As the method for the flatness for further improving above-mentioned polyester film, such as method can be listed below：Shorten above-mentioned The method of the holdup time of polyester in extruder；In the case of using single axle extruding machine, it is preferably 50ppm to use with amount of moisture Below, it is more preferably the method that below 30ppm mode dries the raw materials such as the polyester of gained；Use the situation of biaxial extruder Under, exhaust outlet is set, preferably below 4,000 pas, more preferably below 3,000 pas, more preferably below 2,000 pas The method carried out under reduced pressure atmosphere；In order to improve the adaptation of above-mentioned polyester film and above-mentioned rotation chilling roll, use is for example quiet The method that electricity applies closely sealed method, liquid is coated with closely sealed method.

As the method for stretching through the polyester film that the above method obtains, for example, by above-mentioned non-stretched preferably longitudinal direction with 70 DEG C~145 DEG C carry out 2~6 times of stretchings, and after longitudinally uniaxial tension is carried out, 2~6 times are carried out with 90 DEG C~160 DEG C in transverse direction Stretching, into heat fixation process.

Above-mentioned polyester film is preferably in the highest temperature region of heat treatment and/or the cooled region of heat treatment outlet, vertical To and/or transverse relaxation 0.1%~20%.The polyester film of the drawn obtained by the above method can make it as needed again Vertical stretching, horizontal stretching again.

The supporter (A) obtained by the above method can be made up of single layer, can also use by comprising identical or The supporter that the multilayer of different resin etc. is formed.

In addition, as above-mentioned supporter (A), can further improve and above-mentioned adhesive part (B), other adhesion coatings The aspect of adaptation etc., it can use and be implemented with such as chromic acid processing, ozone exposure processing, fire exposure in its single or double The supporter of the gained such as the oxidation processes such as processing, high-voltage electric shock exposure processing, ionizing radiation processing；By using coating agent Deng and formed with the supporter of prime coat etc..

[adhesive part (B)]

Then, the adhesive part (B) of the adhesive tape to forming the present invention illustrates.

Above-mentioned adhesive part (B) as described above, directly or be arranged on the one side or double of above-mentioned supporter (A) across other layers Face.

Between the adhesive parts of above-mentioned more than 2 (B), have in the absence of the composition for forming above-mentioned adhesive part (B) region or Person can be not play region existing for the degree of adherence.

In addition, formed with following：Region without adhesive part (B) between the adhesive part (B) of above-mentioned more than 2 with A part for the end (edge part) of adhesive tape communicates.By using the adhesive tape with above-mentioned composition, so as to by adhesive tape When being pasted on adherend, easily bubble can be removed from their interface, therefore the expansion by adhesive tape can be prevented The bad order Deng caused by, and keep excellent heat conductivity, bonding force etc..

On above-mentioned adhesive part (B) shape, the present invention preferably from a face (a) side of above-mentioned supporter (A) It is substantially quadrangle, substantially hexagon or circular etc. during adhesive tape, when being circular, easily from the boundary with adherend Face discharge bubble (gas discharge), and good bonding force can be kept, therefore preferably.

Circular is not particularly limited, and the ratio between maximum gauge and minimum diameter of arbitrary 1 adhesive part are (maximum straight Footpath/minimum diameter) it is preferably 1~4.More preferably 1~2, most preferably 1~1.5., can as one of circular Shape as enumerating Fig. 6.The adhesive part of above-mentioned shape is basic each independent, but can also have as shown in Figure 6 by more than 2 The connected position in adhesive part part.

As above-mentioned substantially quadrangle, the shape such as generally square, generally rectangular, generally trapezoidal, almost diamond can be enumerated Shape, when being almost diamond shape, bubble (gas discharge) easily is discharged from the interface of adherend, and can keep good Bonding force, therefore preferably.

It should be noted that " substantially " of above-mentioned substantially quadrangle and substantially hexagon etc. represents to include following shape： Such as during surface mount release liner of adhesive part (B) etc., or during by adhesive tape wound into rolls, by pressing above-mentioned adhesive part (B) corner of quadrangle and hexagon is made to turn into shape with rounded corners, the shape that line part turns into curve part.

The corner of above-mentioned substantially quadrangle is big less than 90 ° preferably towards the angle in the corner of the moving direction of adhesive tape Diamond shaped is caused, when being 45 °~70 ° of scope, easily discharges bubble (gas discharge), and energy from the interface of adherend Good bonding force is enough kept, therefore more preferably.

In addition, form the adhesive part (B) of above-mentioned more than 2 arbitrary adhesive part (b1) and adhesive part (b2) preferably not just To the moving direction and width of adhesive tape.

In addition, above-mentioned adhesive tape majority is cut into arbitrary shape to use according to purposes etc..Now, it is above-mentioned by making Adhesive part (b1) and adhesive part (b2) for not face moving direction and width configuration, so as to by adhesive tape arbitrary In the case of the severing of position, there is adhesive part (B) in a part that can be in its end, therefore can suppress the peeling of adhesive tape.

The arbitrary adhesive part (b1) of selection and close above-mentioned adhesive part (b1) from the adhesive parts of above-mentioned more than 2 (B) The distance of (existing nearest) other adhesive parts (b2) be preferably below 0.5mm, more preferably 0.05mm~0.2mm, More preferably 0.06mm~0.15mm, when being 0.08mm~0.13mm, easily discharge bubble from the interface of adherend (gas discharge), and good bonding force can be kept, therefore particularly preferably.

For the size of the arbitrary adhesive part (b1) of each selection from above-mentioned adhesive part (B), area is preferably 0.001mm²~100mm², more preferably 0.01mm²~25mm², more preferably 0.015mm²~16mm², it is 0.02mm²~ 5mm²When, bubble (gas discharge) easily is discharged from the interface of adherend, and good bonding force can be kept, because This is particularly preferred.

Preferably in the area of adhesive tape of the present invention, (moving direction 5cm and width 5cm are just for above-mentioned adhesive part (B) It is square) in the range of exist 10~1000000, be more preferably the presence of 1000~50000, there is 5000~40000 When individual, bubble (gas discharge) easily is discharged from the interface of adherend, and good bonding force can be kept, therefore Particularly preferably.

In addition, as above-mentioned adhesive tape, from easily from bubble is discharged with the interface of adherend, (gas is discharged when pasting Property), good bonding force can be kept, and in the case that the adherend such as graphite flake are further thinned From the viewpoint of effectively preventing the bad order as caused by the shape of adhesive part, the predetermined area for being preferably used in adhesive tape (moves Dynamic direction 1cm and width 1cm square) in the range of there is the adhesive tapes of 120~2000 adhesive parts, more preferably Using the adhesive tape with 280~1600 adhesive parts, further preferably using viscous with 520~1200 adhesive parts Adhesive tape.

It should be noted that the quantity of above-mentioned adhesive part can be by using any of electron microscope observation adhesive tape Scope (moving direction 1cm and width 1cm square) or (moving direction 5cm and width 5cm square) are simultaneously Counted and obtained.

Region with above-mentioned adhesive part (B) is preferably 10% relative to the ratio shared by the area in said one face (a) ~99%.More preferably 20%~90%, more preferably 30%~80%, most preferably 35%~80%.In above-mentioned During scope, the adhesive part of circular described later can be formed, as a result, can efficiently produce easily from adherend Interface discharge bubble (gas discharge), and the adhesive tape of good bonding force can be kept, therefore particularly preferably.Need It is bright, the ratio of above-mentioned zone be it is in the area of moving direction 5cm and width 5cm square adhesive tape, on State adhesive part (B) area ratio.

The peak temperature of the loss tangent of the dynamic viscoelastic spectrum determined based on above-mentioned adhesive part (B) under frequency 1Hz is not had It is particularly limited to, but is preferably -30 DEG C~20 DEG C, more preferably -20 DEG C~10 DEG C, when being -10 DEG C~5 DEG C, easily from being glued The interface discharge bubble (gas discharge) of junctor, and good bonding force can be kept, as a result, can more effectively prevent Only the performance such as bad order, heat conductivity, heat resistance, bonding force as caused by expansion of above-mentioned adhesive tape etc. reduces, therefore more It is preferred that.

In above-mentioned Measurement of Dynamic Viscoelasticity, test for viscoelastic machine (Rheometric company systems, trade name are used：ARES 2KSTD), test film is sandwiched between the parallel disk as determination part of the testing machine, determines the storage modulus under frequency 1Hz (G ') and loss modulus (G ").Formula of the above-mentioned loss tangent represented by tan δ=(G ")/(G ') calculates.Above-mentioned peak temperature is Refer to the peak temperature confirmed in the spectrogram for the tan δ of measurement temperature region (- 50 DEG C to 150 DEG C).

As above-mentioned test film, it can use and be formed using sticker used in above-mentioned adhesive part (B) formation , thickness 0.5mm~2.5mm adhering agent layer.

In addition, as above-mentioned test film, can use in the test film for being laminated the adhesive tape of the multilayer present invention The aggregate thickness of adhering agent layer is 0.5mm~2.5mm test film.In the case of having used above-mentioned differently composed test film, Although above-mentioned tan δ value changes, when the aggregate thickness of the above-mentioned adhering agent layer (B) occupied in above-mentioned test film is identical, on It is substantially constant to state peak temperature.Therefore, in the measure of above-mentioned peak temperature, any test film can be used.

As above-mentioned adhesive part (B), preferably using with 10 mass %~60 mass % gel fraction adhesive part, more It is preferred that using the adhesive part of the gel fraction with the mass % of 20 mass %~55, using with 30 mass %~50 mass % During the adhesive part of gel fraction, even if being slim, above-mentioned adhesive part (B) surface configuration is also easily kept, therefore easily prevent Rheological parameters' change with time, bubble can be easily removed from the interface of adherend and adhesive part (B), as a result, can more effectively prevent Only the performance such as bad order, heat conductivity, heat resistance, bonding force as caused by expansion of above-mentioned adhesive tape etc. reduces, therefore more It is preferred that.It should be noted that above-mentioned gel fraction refers to the value determined by the following method.

It should be noted that above-mentioned gel fraction refers to the value determined by following shown methods.

In the demoulding process face of release liner (C), above-mentioned sticker is coated with a manner of dried thickness turns into 50 μm Afterwards, dry 3 minutes, then cured 2 days in the environment of 40 DEG C, so as to form adhering agent layer in the environment of 100 DEG C.

Above-mentioned adhering agent layer is cut into vertical 50mm and horizontal 50mm square, as test film.

After the quality (G1) for determining above-mentioned test film, in the environment of 23 DEG C, above-mentioned test film is set to impregnate 24 in toluene Hour.

After above-mentioned dipping, the mixture of above-mentioned test film and toluene is filtered using 300 mesh wire nettings, so as to extract Insoluble component in toluene.Above-mentioned insoluble component is dried 1 hour in the environment of 110 DEG C, determine the quality of the material of gained (G2)。

Based on above-mentioned quality (G1), quality (G2) and following formula, its gel fraction is calculated.

Gel fraction (quality %)=(G2/G1) × 100

As above-mentioned adhesive part (B), preferably using the adhesive part of 1 μm~6 μm of thickness, 2 μm~5 μm of adhesion of thickness is used During portion, can easily remove bubble from the interface of adherend and adhesive part (B), as a result, can more efficiently prevent from by The performance such as bad order, heat conductivity, heat resistance, bonding force caused by expansion of above-mentioned adhesive tape etc. reduces, therefore more preferably. In addition, the thickness of above-mentioned adhesive part (B) refers to according to JIS K6783, by using the method for amesdial, in connecing for amesdial Contacting surface is plane, its a diameter of 5mm and the thickness for loading the double-sided adhesive tape determined under conditions of 1.23N.

Above-mentioned adhesive part (B) can use such as acrylic acid series sticker, rubber series sticker, silicone-based sticker, ammonia Carbamate system sticker, Polyester sticker, Styrene-diene block copolymer system sticker, vinyl alkyl ethers system glue Known in agent, polyamide-based sticker, fluorine system sticker, creep properties modified form sticker, radiation-curing type sticker etc. Sticker formed.When wherein, using by the use of the adhesive part that acrylic acid series sticker obtains as above-mentioned adhesive part (B), glue Connect it is excellent in reliability, therefore preferably.

There is adhesive tape of the adhesive tape of adhesive part or adhesion coating as the present invention using the double-face side in above-mentioned supporter In the case of, above-mentioned adhesive part or adhesion coating both can be identical composition, gel fraction, and it is different groups that can also use Into, the adhesive part of gel fraction or adhesion coating.

As aforesaid propylene acid system sticker, the sticker containing acrylate copolymer can be used.

As aforesaid propylene acid polymer, can use by making comprising (methyl) propylene such as (methyl) alkyl acrylates Polymer obtained from the polymerizing monomer components of acid monomers.

As above-mentioned (methyl) alkyl acrylate, such as it can be used alone or be applied in combination following thing of more than two kinds Matter：(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 Ester, (methyl) acrylic acid eicosane base ester etc..Wherein, as (methyl) alkyl acrylate, preferably using the carbon of abovementioned alkyl Atomicity is 1~20 (methyl) alkyl acrylate, (methyl) for the use of the carbon number of abovementioned alkyl being more preferably 4~18 Alkyl acrylate.Abovementioned alkyl can enumerate the alkyl of straight or branched.

(methyl) alkyl acrylate that carbon number as aforesaid propylene acyl group is 4~18, due to easily keeping The surface configuration of above-mentioned adhering agent layer (B), therefore acquisition easily prevents rheological parameters' change with time, is easily discharged from the interface of adherend Bubble (gas discharge), and the aspect of the adhesive tape of good bonding force can be kept, preferably use (methyl) acrylic acid Butyl ester.

As above-mentioned (methyl) acrylic monomers, in addition to those specified above, two can also be used singly or in combination Following material more than kind：(methyl) acrylic acid, itaconic acid, maleic acid, fumaric acid, crotonic acid, iso-crotonic acid etc. have carboxyl Monomer or its acid anhydride；Sodium vinyl sulfonate etc. has sulfonic monomer；Acrylonitrile etc. has the monomer of cyano group；Acrylamide, Methacrylamide, NVP, N, N- dimethyl (methyl) acrylamide etc. have the monomer of amide groups；(first Base) hydroxyalkyl acrylates, glycerine dimethacrylate etc. have the monomer of hydroxyl；(methyl) acrylate, (methyl) acryloyl morpholine etc. has the monomer of amino；N-cyclohexylmaleimide, isopropylmaleimide etc. have acyl The monomer of imido grpup；(methyl) glycidyl acrylate, (methyl) acrylic acid methylglycidyl esters etc. have epoxy radicals Monomer；2- methacryloxyethyl isocyanates etc. has monomer, triethylene glycol two (methyl) propylene of NCO Acid esters, diethylene glycol two (methyl) acrylate, ethylene glycol two (methyl) acrylate, tetraethylene glycol two (methyl) acrylic acid Ester, neopentyl glycol two (methyl) acrylate, 1,6-HD two (methyl) acrylate, trimethylolpropane tris (methyl) third The monomers such as olefin(e) acid ester, pentaerythrite three (methyl) acrylate, dipentaerythritol six (methyl) acrylate, divinylbenzene.

In addition, as above-mentioned monomer, in addition to above-mentioned (methyl) acrylic monomers, styrene, substitution can also be used The aromatic ethenyl compounds such as styrene；The olefines such as ethene, propylene, butadiene；The vinyl esters such as vinyl acetate；Chlorine Ethene etc..

Aforesaid propylene acid polymer can be by using solution polymerization process, mass polymerization, suspension polymerization, emulsion polymerization The methods of method, manufactures above-mentioned monomer polymerization, in terms of the production efficiency of acrylate copolymer is improved, it is preferred to use solution gathers It is legal.

As above-mentioned solution polymerization process, can enumerate for example above-mentioned monomer, polymerization initiator and organic solvent preferably Mix, stir, the method for carrying out radical polymerization at a temperature of 40 DEG C~90 DEG C.

As above-mentioned polymerization initiator, the peroxide such as benzoyl peroxide, lauroyl peroxide can be used；It is even The azo such as nitrogen bis-isobutyronitrile system thermal polymerization；Acetophenone system Photoepolymerizationinitiater initiater, benzoin ether system Photoepolymerizationinitiater initiater, benzene Even acyl ketal system Photoepolymerizationinitiater initiater, acylphosphine oxide system Photoepolymerizationinitiater initiater, benzoin system Photoepolymerizationinitiater initiater, benzophenone It is Photoepolymerizationinitiater initiater etc..

The acrylate copolymer obtained by the above method for example, by solution polymerization process in the case where manufacturing, Ke Yiwei The state being dissolved or dispersed in organic solvent.

As the acrylate copolymer obtained by the above method, preferably using with 300,000~1,200,000 Weight-average molecular The acrylate copolymer of amount, more preferably using the acrylate copolymer with 400,000~1,100,000 weight average molecular weight, it is being Make for the slim aspect for also possessing more excellent bonding force and bubble and removing the adhesive tape of easiness, preferably using have 500,000~ The acrylate copolymer of 1000000 weight average molecular weight.

It should be noted that above-mentioned weight average molecular weight refers to determine rower of going forward side by side by gel permeation chromatography (GPC method) The value that quasi- polystyrene converts and calculated.Specifically, above-mentioned weight average molecular weight can use TOSOH Co., Ltd's GPC devices (HLC-8329GPC), it is measured under the following conditions.

Sample concentration：0.5 mass % (tetrahydrofuran solution)

Sample injection rate：100μl

Eluent：Tetrahydrofuran

Flow velocity：1.0ml/ minute

Measurement temperature：40℃

Main chromatographic column：TSKgel GMHHR-H (20) 2

Protect chromatographic column：TSKgel HXL-H

Detector：Differential refractometer

The weight average molecular weight of polystyrene standard：10000~20,000,000 (TOSOH Co., Ltd's systems)

As available for the sticker for forming above-mentioned adhesive part (B), possess more excellent bonding force, tensile strength being formed With the aspect of the adhesive part of tensile break strength, the sticker containing tackifying resin is preferably used.

As above-mentioned tackifying resin, such as rosin series tackifying resin, newtrex system tackifying resin, polymerization pine can be used Fragrant ester system tackifying resin, rosin phenol system tackifying resin, stabilization rosin ester system tackifying resin, disproportionated rosin ester system tackifying resin, The oil such as hydrogenated wood rosin glycerol ester system tackifying resin, terpenic series tackifying resin, terpene phenolic system tackifying resin and polystyrene tackifying resin Resin system tackifying resin etc..

As above-mentioned tackifying resin, also possess more excellent bonding force and bubble removing easiness even if to be slim obtaining Adhesive tape aspect, preferred compositions use rosin series tackifying resin and Petropols system tackifying resin.Above-mentioned rosin series thickening Resin and Petropols system tackifying resin are particularly preferably applied in combination with aforesaid propylene acid polymer, are obtaining even if to be slim Possesses the aspect of the adhesive tape of more excellent bonding force and bubble removing easiness, preferably with (methyl) butyl acrylate will be contained Monomer polymerization obtained from acrylate copolymer be applied in combination.

In addition, as above-mentioned tackifying resin, in terms of the initial bond power of above-mentioned adhesive part (B) is further improved, It is preferred that use the tackifying resin under normal temperature being liquid.As the tackifying resin under normal temperature being liquid, such as processing oil can be enumerated, gathered The liquid rubber of the low molecule amounts such as ester system plasticizer, polybutene, terpene phenol resin can be used, as commercially available product, peace can be enumerated Former chemical company YP-90L etc..

Above-mentioned tackifying resin is preferably with respect to the mass parts of aforesaid propylene acid polymer 100 with the mass parts of 20 mass parts~60 Scope uses, in terms of obtaining and possessing the further adhesive tape of excellent bonding force, more preferably with the matter of 30 mass parts~55 The scope for measuring part uses.

In addition, as the sticker for forming above-mentioned adhesive part (B), can use in addition to aforesaid propylene acid polymer etc. Sticker also containing softening agent, plasticizer, filler, age resister, colouring agent etc. as needed.

When wherein, using crosslinking agent, the gel fraction of above-mentioned adhesive part (B) can be adjusted to suitable scope, it is tied Fruit, easily keeps above-mentioned adhesive part (B) shape, therefore easily prevents rheological parameters' change with time, can be from adherend and adhering agent layer (B) interface easily removes bubble, and can obtain the adhesive tape for possessing excellent bonding force, therefore preferably.

As above-mentioned crosslinking agent, such as isocyanate crosslinking or epoxy crosslinking agent are preferably used.

As above-mentioned isocyanate crosslinking, can use for example toluene di-isocyanate(TDI), naphthalene -1,5- diisocyanate, Hexamethylene diisocyanate, methyl diphenylene diisocyanate, XDI, trimethylolpropane are modified Toluene di-isocyanate(TDI) etc., preferably using toluene such as toluene di-isocyanate(TDI), trimethylolpropane modified toluene diisocyanate Diisocyanate addition product.Above-mentioned toluene di-isocyanate(TDI) addition product is that have the structure from toluene di-isocyanate(TDI) in molecule Material, for commercially available product, for example, CORONATE L (Nippon Polyurethane Industry Co., Ltd.'s system) etc. can be enumerated.

In the case of using above-mentioned isocyanate crosslinking, as aforesaid propylene acid polymer, preferably using has hydroxyl Acrylate copolymer.On the above-mentioned acrylate copolymer with hydroxyl, as the monomer used in its manufacture, can make With such as (methyl) acrylic acid 2- hydroxy methacrylates, (methyl) acrylic acid 4- hydroxybutyls, the own ester of (methyl) acrylic acid 6- hydroxyls etc., More preferably use (methyl) acrylic acid 2- hydroxy methacrylates, (methyl) acrylic acid 4- hydroxybutyls.

In addition, as epoxy crosslinking agent, can use such as Mitsubishi Gas Chemical Co., Ltd TETRAD X, E-05X of TETRAD C or Zong Yan KCCs etc..

In the case of using above-mentioned epoxy crosslinking agent, as aforesaid propylene acid polymer, preferably using third with acidic group Olefin(e) acid polymer.On the above-mentioned acrylate copolymer with acidic group, as the monomer used in its manufacture, preferably use example Such as (methyl) acrylic acid, acrylic acid dimer, itaconic acid, crotonic acid, maleic acid, maleic anhydride, more preferably use (methyl) Acrylic acid.

As the sticker that can be used in being formed above-mentioned adhesive part (B), the adhesion containing solvent as needed is preferably used Agent.As above-mentioned sticker, the sticker of 0.1mPas~1000mPas scope is preferably adjusted to using its viscosity, More preferably using the sticker for the scope for being adjusted to 1mPas~200mPas, using be adjusted to 10mPas~ During the sticker of 100mPas scope, the adhesive part (B) of predetermined shape is easily formed, therefore further preferably.

[manufacture method of adhesive tape]

The adhesive tape of the present invention can be coated with by least one face (a) side interval shape in for example above-mentioned supporter (A) Above-mentioned sticker simultaneously makes its drying etc. and forms adhesive part (B) to manufacture.

In addition, above-mentioned adhesive tape can also be coated with above-mentioned glue by distinguishing interval shape in the double-face side of above-mentioned supporter (A) Agent and it is dried to manufacture.

Above-mentioned sticker preferably applies for example, by the coating method interval such as gravure coating method, slot die coating method shape Cloth is preferably coated by direct gravure coating method at least one face (a) of above-mentioned supporter (A).

In addition, above-mentioned adhesive tape can be manufactured by the following：Above-mentioned sticker is coated with the surface of such as release liner simultaneously After being dried etc. so as to form adhesive part (B), above-mentioned adhesive part (B) is needed on at least one face (a) of supporter (A) Side.

The adhesive tape of the present invention can be after for example being manufactured using release liner as described above, to peel off as needed Above-mentioned release liner, and paste the adhesive tape that other release liners form.

The adhesive tape of the present invention can be suitably used in due to also having excellent bonding force even if to be very slim Such as require the manufacturing site location of the electronic equipments such as the portable electronic piece terminal of slimming.Even if to be particularly the gap between adherend (the stickup position of adhesive tape) is the situation of the very narrow and small scope below 20 μm of width, can also be bonded above-mentioned quilt securely Convered structure.

In addition, above-mentioned adhesive tape is due to easily from the interface of adherend and adhesive portion (B) discharge bubble, therefore can fit Preferably it is used in the fixed-purpose for the fin for being possible to cause performance to reduce because of the remaining of above-mentioned bubble, the fixed of magnetic piece is used In way etc..

(use in fin fixed-purpose)

In the electronic equipments such as portable electronic piece terminal, majority is equipped with the component to be generated heat by use., can as generating component Enumerate such as rechargeable battery, circuit substrate.

Malfunction of electronic equipment etc. is being prevented, is preferably avoiding making the one of electronic equipment because above-mentioned component generates heat Part turns into localized hyperthermia.Therefore, for above-mentioned generating component or the component being adjacent (such as in order to be assigned to electronic equipment Hardware as framework material rigidly used etc.) for, so that for the purpose of above-mentioned thermal diffusion, majority is pasted with fin Deng radiating component.

As above-mentioned radiating component, such as graphite flake, graphene film are preferably used.

As above-mentioned graphite flake, can enumerate electrographite piece, natural graphite flakes both.

As above-mentioned electrographite piece, can enumerate for example by organic film as polyimide film high temperature nonactive gas Graphite flake is thermally decomposed obtained from being thermally decomposed in body atmosphere.

Above-mentioned natural graphite flakes can be enumerated for example by after natural graphite progress acid treatment, make its heating expansion, then right The powdered graphite of gained is pressurizeed and the graphite flake obtained by sheet is made.

As above-mentioned graphite flake, in terms of the further excellent thermal diffusivity of performance, preferably using the few graphite of gauffer Piece, more preferably using the few electrographite piece of gauffer.

The thickness of above-mentioned graphite flake is preferably 10 μm~100 μm, in the slimming to electronic equipments such as portable electronic piece terminals In terms of contributing, preferably 15 μm~50 μm.

On the other hand, above-mentioned graphite flake is due to more crisp, therefore generally to be pasted with the stone of adhesive tape in its single or double The state of black composite sheet uses.

As above-mentioned graphite composite sheet, for example, as shown in figure 5, in the high intensity for taking into account graphite flake and the side of insulating properties Face, preferably using the graphite composite sheet with the composition sealed by one side adhesive tape and double-sided adhesive tape.

As above-mentioned graphite composite sheet, the graphite that (pack) is sealed using the adhesive tape for being more than above-mentioned graphite flake by area is answered When closing piece, interlaminar failure, dry linting of graphite flake etc. can be prevented, easily realizes suitable processability, therefore preferably.

The adhesive tape of the present invention can suitably use when above-mentioned graphite flake is packed.Now, above-mentioned adhesive tape is preferred With it there is the state facing to outside (direction of non-graphite piece side) of adhesive part (B) to use.Thus, by graphite composite sheet, During with the generating component such as rechargeable battery or the component being adjacent fitting, the interface remaining gas at them can be effectively prevented Bubble.

The stickup of above-mentioned graphite composite sheet and above-mentioned component can be by carrying out via following processes：In for example above-mentioned structure The surface of part loads above-mentioned graphite composite sheet, and lightly crimping is so that the process that they are temporarily bonded；In above-mentioned temporarily bonding Afterwards, pressurizeed using roller etc. and make the process of their strong bonds.In the above-mentioned process being temporarily bonded, generally in above-mentioned structure Bubble be present in part and the interface of graphite composite sheet.But if the graphite composite sheet of the adhesive tape using the present invention, then utilize When above-mentioned roller etc. is pressurizeed, above-mentioned bubble rapidly can be removed from above-mentioned interface.

In addition, for the purpose of damage to prevent its surface etc., majority is pasted with surface protection in above-mentioned graphite composite sheet Film.Above-mentioned surface protection film is generally removed after above-mentioned graphite composite sheet is pasted with above-mentioned component.

, can be bonded securely with the adherend such as component after above-mentioned bubble is removed according to the adhesive tape of the present invention, because This from graphite composite sheet remove above-mentioned surface protection film when, be not easy to cause above-mentioned graphite composite sheet from component to float, peel off.

As described above, using the obtained graphite composite sheet of adhesive tape of the present invention can prevent with the adherend such as component Interface bubble be present, therefore can effectively prevent the thermal resistance value of the adhesive tape because of caused by the presence of above-mentioned bubble from increasing, As a result, the pyroconductivity of the thickness direction of adhesive tape can be improved.

(use in magnetic piece fixed-purpose)

Leaked with blocking from the electromagnetic wave outside portion that the component for being formed electronic equipment is sent, or prevent electromagnetism caused by outside For the purpose of ripple impacts to electronic equipment, magnetic piece majority is pasted on the inside of electronic equipment.

As above-mentioned magnetic piece, it can use and for example utilize Ni systems ferritic magnet body powder, Mg systems ferritic magnet body Powder, Mn systems ferritic magnet body powder, Ba systems ferritic magnet body powder, Sr systems ferritic magnet body powder, Fe-Si alloys Powder, Fe-Ni alloy/C powder, Fe-Co alloy/C powder, Fe-Si-Al alloy powders, Fe-Si-Cr alloy powders, iron powder, Fe It is piece obtained from amorphous body, Co systems amorphous body, Fe base nanometer crystal bodies etc..

As above-mentioned magnetic piece, in terms of good electromagnetic wave shielding characteristic is assigned, it is usually preferred to use thicker magnetic Property piece.

The adhesive tape of the present invention can use the magnetic of the thick film with maximum limit due to being very slim as described above Property piece is as above-mentioned magnetic piece.

For the purpose of assigning good insulating properties and high intensity, above-mentioned magnetic piece in its single or double preferably to be pasted with The mode of the magnetic coupling piece of adhesive tape uses.

Embodiment

Hereinafter, embodiments of the invention are recorded, are more specifically illustrated.

(modulation example 1) sticker a

Using the mass parts of azodiisobutyronitrile 0.2 as polymerization initiator, by the mass parts of n-butyl acrylate 97.98, propylene Sour 2 mass parts and the mass parts of acrylic acid 4- hydroxybutyls 0.02 carry out polymerisation in solution in 8 hours in ethyl acetate solution with 80 DEG C, So as to obtain the acrylate copolymer of weight average molecular weight 900,000.

Relative to the mass parts of aforesaid propylene acid polymer 100, by " D-135 " (Arakawa Chemical Industries, Ltd.'s system, polymerization Rosin ester) 5 mass parts, " KE-100 " (Arakawa Chemical Industries, Ltd.'s system, disproportionated rosin ester) 20 mass parts and " FTR6100 " (Mitsui Chemicals, Inc's system, Petropols) 25 mass parts mix, and further add ethyl acetate, so as to 40 mass % adhesion agent solution is adjusted to solid constituent.

Above-mentioned adhesion agent solution and " NC40 " (Dainippon Ink Chemicals's system, isocyanate crosslinking) 2.0 mass parts are mixed simultaneously Stirring, so as to obtain sticker a.

Peak temperature using the tan δ of the obtained adhering agent layers of above-mentioned sticker a is 0 DEG C, and its gel fraction is 40 matter Measure %.

(modulation example 2) sticker b

Using the mass parts of azodiisobutyronitrile 0.3 as polymerization initiator, by the mass parts of n-butyl acrylate 97.98, propylene Sour 2 mass parts and the mass parts of acrylic acid 4- hydroxybutyls 0.02 carry out polymerisation in solution in 6 hours in ethyl acetate solution with 90 DEG C, So as to obtain the acrylate copolymer of weight average molecular weight 500,000.

Above-mentioned adhesion agent solution and " NC40 " (Dainippon Ink Chemicals's system, isocyanate crosslinking) 0.6 mass parts are mixed simultaneously Stirring, so as to obtain sticker b.

Peak temperature using the tan δ of the obtained adhering agent layers of above-mentioned sticker b is 0 DEG C, and its gel fraction is 10 matter Measure %.

(modulation example 3) sticker c

Above-mentioned adhesion agent solution and " NC40 " (Dainippon Ink Chemicals's system, isocyanate crosslinking) 3.3 mass parts are mixed simultaneously Stirring, so as to obtain sticker c.

Peak temperature using the tan δ of the obtained adhering agent layers of above-mentioned sticker c is 0 DEG C, and its gel fraction is 46 matter Measure %.

(modulation example 4) sticker d

Above-mentioned adhesion agent solution and " NC40 " (Dainippon Ink Chemicals's system, isocyanates system crosslinking agent) 1.2 mass parts are mixed And stir, so as to obtain sticker d.

Peak temperature using the tan δ of the obtained adhering agent layers of above-mentioned sticker d is 0 DEG C, and its gel fraction is 20 matter Measure %.

(modulation example 5) sticker e

Using the mass parts of azodiisobutyronitrile 0.2 as polymerization initiator, by the mass parts of n-butyl acrylate 96.4, acrylic acid 3.5 mass parts and the mass parts of acrylate 4- hydroxy methacrylates 0.1 carry out 8 hours solution with 80 DEG C in ethyl acetate solution and gathered Close, so as to obtain the acrylate copolymer of weight average molecular weight 800,000.

Relative to the mass parts of aforesaid propylene acid polymer 100, by " D-135 " (Arakawa Chemical Industries, Ltd.'s system, polymerization Rosin ester) 10 mass parts and " A100 " (disproportionated rosin ester, Arakawa Chemical Industries, Ltd.'s system) 10 mass parts mix, further Ethyl acetate is added, so as to obtain the adhesion agent solution that solid constituent is adjusted to 40 mass %.

Above-mentioned adhesion agent solution and " NC40 " (Dainippon Ink Chemicals's system, isocyanate crosslinking) 1.3 mass parts are mixed simultaneously Stirring, so as to obtain sticker e.

Peak temperature using the tan δ of the obtained adhering agent layers of above-mentioned sticker e is -15 DEG C, and its gel fraction is 40 matter Measure %.

(modulation example 6) sticker f

Using the mass parts of azodiisobutyronitrile 0.1 as polymerization initiator, by the mass parts of n-butyl acrylate 44.9, acrylic acid The mass parts of 2- ethylhexyls 50, the mass parts of vinyl acetate 3, the mass parts of acrylic acid 2 and the mass of acrylic acid 4- hydroxybutyls 0.1 Part carries out polymerisation in solution in 10 hours in ethyl acetate solution with 70 DEG C, so as to obtain the acroleic acid polymerization of weight average molecular weight 800,000 Thing.

Relative to the mass parts of aforesaid propylene acid polymer 100, mixing " D-135 " (Arakawa Chemical Industries, Ltd.'s system, gathers Close rosin ester) 10 mass parts, ethyl acetate is further added, so as to obtain the sticker that solid constituent is adjusted to 40 mass % Solution.

Above-mentioned adhesion agent solution and " NC40 " (Dainippon Ink Chemicals's system, isocyanate crosslinking) 1.3 mass parts are mixed simultaneously Stirring, so as to obtain sticker f.

Peak temperature using the tan δ of the obtained adhering agent layers of above-mentioned sticker f is -25 DEG C, and its gel fraction is 40 matter Measure %.

(embodiment 1)

" PET25 × 1J0L " (Nippa Co. Ltd. systems, has silicone-based stripping on the surface of the PET film of smooth surface On the release liner of process face, after being coated with above-mentioned sticker a using roll coater, it is set to dry 1 minute with 100 DEG C, so as to make The adhering agent layer that 1 μm of thickness.

Then, using above-mentioned adhering agent layer be needed on as supporter " K100-2.0W " (Mitsubishi Plastics Inc's system, Polyester film, 2 μm of thickness) a face, so as to obtain one-faced tapes.

Then, using gravure coater, above-mentioned sticker a dot matrix are printed in the above-mentioned support for forming above-mentioned one-faced tapes Another face of body, it is set to dry 1 minute with 100 DEG C, so as to obtain having 3 μm of the thickness of the almost diamond shape shown in Fig. 1 The adhesive tape of 6 μm of the gross thickness of adhesive part.It should be noted that in above-mentioned adhesive part, arbitrary adhesive part and gluing close to it The distance for portion is 0.1mm.

On the face with above-mentioned adhesive part of adhesive tape obtained above, overlapping " PET25 × 1J0L " (Nippa strain formulas Commercial firm's system, there is the release liner in silicone-based lift-off processing face on the surface of the PET film of smooth surface), and utilize laminating machine Pasted with line pressure 3N/mm.

(embodiment 2~12)

The thickness of adhesive part (B) shape, area and adhesive part (B) is changed to described in table 1~3, in addition, Adhesive tape is made by method similarly to Example 1.

(embodiment 13)

Using gravure coater, above-mentioned sticker a dot matrix are printed in " PET25 × 1J0L " (Nippa Co. Ltd. systems, There is the release liner in silicone-based lift-off processing face on the surface of the PET film of smooth surface), it is dried 1 point with 100 DEG C Clock, so as to form the μ of thickness 3 of the almost diamond shape (angle towards the corner of the moving direction of adhesive tape is 60 °) shown in Fig. 1 M adhesive part.It should be noted that in above-mentioned adhesive part, arbitrary adhesive part is with the distance close to its adhesive part 0.1mm。

Then, above-mentioned adhesive part is needed on and (Mitsubishi Plastics Inc's system, gathered as " K100-2.0W " of supporter Ester film, 2 μm of thickness) a face, so as to obtain one-faced tapes.

Then, using gravure coater, above-mentioned sticker a dot matrix are printed in the supporter that forms above-mentioned one-faced tapes Another face, it is set to dry 1 minute with 100 DEG C, so as to form the almost diamond shape shown in Fig. 1 (towards the mobile side of adhesive tape To corner angle be 60 °) 3 μm of thickness adhesive part.It should be noted that in above-mentioned adhesive part, arbitrary adhesive part It is 0.1mm with the distance close to its adhesive part.

Method more than, obtain 3 μm of the thickness in the two-sided almost diamond shape with shown in Fig. 1 of above-mentioned supporter Adhesive part 8 μm of gross thickness adhesive tape.

(embodiment 14)

Sticker b is used instead of sticker a, in addition, adhesive tape is obtained by method similarly to Example 1.

(embodiment 15)

Sticker c is used instead of sticker a, in addition, adhesive tape is obtained by method similarly to Example 1.

(embodiment 16)

Sticker d is used instead of sticker a, in addition, adhesive tape is obtained by method similarly to Example 1.

(embodiment 17)

Sticker e is used instead of sticker a, in addition, adhesive tape is obtained by method similarly to Example 1.

(embodiment 18)

Sticker f is used instead of sticker a, in addition, adhesive tape is obtained by method similarly to Example 1.

(embodiment 19~25)

The thickness of adhesive part (B) shape, area and adhesive part (B) is changed to described in table 4 and 5, in addition, Adhesive tape is made with method similarly to Example 1.In addition, using light microscope with 200 times of observation embodiments 20 of multiplying power The face (Fig. 6) of the adhesive part with circular of obtained adhesive tape.

(comparative example 1)

Above-mentioned sticker a is coated on " PET25 × 1J0L " (Nippa Co. Ltd. systems, in smooth surface using roll coater PET film surface on have silicone-based lift-off processing face release liner) after, with 100 DEG C make its dry 1 minute, so as to make Make the adhering agent layer of 1 μm of thickness.

Then, above-mentioned sticker a is coated on to another face for the supporter for forming above-mentioned one-faced tapes using roll coater Afterwards, it is made to dry 1 minute with 100 DEG C, so as to make the adhering agent layer of 3 μm of thickness.

(comparative example 2)

Above-mentioned sticker a is coated on " PET25 × 1J0L " (Nippa Co. Ltd. systems, in smooth surface using roll coater PET film surface on have silicone-based lift-off processing face release liner) after, with 100 DEG C make its dry 1 minute, so as to make Make the adhering agent layer of 2 μm of thickness.

Then, using above-mentioned adhering agent layer be needed on as supporter " K100-2.0W " (Mitsubishi Plastics Inc's system, Polyester film, 2 μm of thickness) one side, so as to obtain one-faced tapes.

Further, after above-mentioned sticker a is coated on the supporter of one-faced tapes using roll coater, it is made with 100 DEG C Dry 1 minute, so as to make the adhering agent layer of 2 μm of thickness.The laminating machine used when adhering agent layer is needed on into above-mentioned supporter Pressure for line press 3N/mm.

Then, the peeling paper that the embossing for having carried out clathrate is handled is fitted in into adhering agent layer, cured 2 days with 40 DEG C, from And obtain the adhesive tape for possessing the adhering agent layer that there is concaveconvex shape as shown in Figure 7 on the surface of adhering agent layer.Fig. 7 is to make With light microscope with the figure on the surface of 100 times of adhering agent layers for observing the adhesive tape obtained in comparative examples 2 of multiplying power.

(comparative example 3)

Then, above-mentioned sticker a is coated on " PSM100GS " (Lintec Co. Ltd. systems, through sand using roll coater The surface of the treated PET film of bed course has the release liner in silicone-based lift-off processing face, centerline average surface roughness Ra =0.36 μm) after, it is dried 1 minute with 100 DEG C, so as to make the adhering agent layer of 2 μm of thickness.Then, by above-mentioned sticker Layer is needed on another face of above-mentioned supporter, so as to obtain the adhesive tape of 6 μm of gross thickness.Adhering agent layer is needed on above-mentioned branch The pressure of the laminating machine used during support body is that line presses 3N/mm.

(assay method of the gel fraction of adhesive part)

Above-mentioned sticker a~f is coated on to the demoulding of release liner in a manner of dried thickness turns into 50 μm respectively After process face, dry 3 minutes, then cured 2 days in the environment of 40 DEG C, so as to form adhering agent layer in the environment of 100 DEG C. Above-mentioned adhering agent layer is cut into vertical 50mm and horizontal 50mm square, as test film.

After the quality (G1) for determining above-mentioned test film, in the environment of 23 DEG C, above-mentioned test film is set to impregnate 24 in toluene Hour.After above-mentioned dipping, the mixture of above-mentioned test film and toluene is filtered using 300 mesh wire nettings, so as to extract first Insoluble component in benzene.Measure makes the quality of above-mentioned insoluble component material of dry 1 hour gained in the environment of 110 DEG C (G2)。

Gel fraction (quality %)=(G2/G1) × 100

(measure of dynamic viscoelastic)

Above-mentioned sticker a~f is coated on the surface of release liner in a manner of dry thickness turns into 50 μm respectively and made It is dried, and so as to form adhering agent layer, is cured 2 days in the environment of 40 DEG C.By after above-mentioned curing adhering agent layer superposition until Gross thickness turns into 2mm, as test film.

Then, using test for viscoelastic machine (Rheometric company systems, trade name：ARES 2KSTD), by above-mentioned experiment Piece sandwiches diameter 7.9mm parallel discoidal determination part, frequency 1Hz, under conditions of 1 DEG C/1 minute heating-up time measure- 50 DEG C to 150 DEG C of storage modulus (G ') and loss modulus (G ").Loss tangent tan δ are calculated by following calculating formula.

Loss tangent tan δ=G "/G '

(making of graphite composite sheet)

In vertical 104mm × 5 μm of the horizontal 104mm × thickness of face fitting of the graphite flake of vertical 100mm × 25 μm of horizontal 100mm × thickness One-sided adhesive band " IL-05G " (Dainippon Ink Chemicals's system), be bonded in another face of above-mentioned graphite flake and by embodiment and compare The adhesive tape obtained in example is cut into the adhesive tape obtained by vertical 104mm × horizontal 104mm sizes.

Now, in the adhering agent layer for forming above-mentioned adhesive tape, there is the adhering agent layer of smooth surface to turn into and connect with graphite flake Tactile direction.

Then, above-mentioned one-sided adhesive band " IL-05G " 62 μm of surface coating thickness micro- adhesion one-faced tapes " CPF50 (25)-SP " (Nippa Co. Ltd. systems), so as to obtain graphite composite sheet.

(bonding force (after stickup 1 hour))

The adhesive tape obtained in embodiment and comparative example is cut into 20mm width, to the adhering agent layer of its side with thickness 25 μm of polyethylene terephthalate film is as backing, as test film.Adhesion of the above-mentioned backing to smooth surface The surface of oxidant layer is carried out, without being carried out to the adhering agent layer of the adhesive part (B) equivalent to the constitutive requirements as the present invention.

Above-mentioned test film is pasted on to the surface of cleaning and smooth stainless steel plate, makes 2kg rollers reciprocal in its upper surface Once and after being pressurizeed, according to JISZ-0237, after being placed 1 hour under conditions of 23 DEG C and 50%RH, at 23 DEG C and 50% TENSILON cupping machines are used under RH atmosphere, determine peel adhesion (peeling direction：180 °, draw speed：0.3m/ min).Measurement result is shown in " bonding force (after stickup 1 hour) " column of table.

(bonding force (after stickup 24 hours))

Above-mentioned test film is pasted on to the surface of cleaning and smooth stainless steel plate, it is past using 2kg rollers in its upper surface Again once and after pressurizeing, according to JISZ-0237, after being placed 24 hours under conditions of 23 DEG C and 50%RH, at 23 DEG C and 50% TENSILON cupping machines are used under RH atmosphere, determine peel adhesion (peeling direction：180 °, draw speed：0.3m/ min).Measurement result is shown in " bonding force (after stickup 24 hours) " column of table.

(confining force)

The adhesive tape obtained in embodiment and comparative example is cut into 20mm width, to the adhering agent layer of its side with thickness 50 μm of aluminium foil is as backing, as test film.Above-mentioned backing is carried out to the surface of the adhering agent layer of smooth surface, without The adhering agent layer of adhesive part (B) equivalent to the constitutive requirements as the present invention is carried out.

Above-mentioned test film is pasted on cleaning and smooth stainless steel in a manner of the bonding area as 20mm × 20mm The surface of plate, made a round trip in its upper surface using 2kg rollers and after pressurizeing, according to JISZ-0237, at 23 DEG C and 50%RH Under the conditions of place 1 hour after, under 100 DEG C of atmosphere along shear direction apply 100g load, measure 24 hours after adhesive tape Offset distance.Measurement result is shown in " confining force " one column of table.

[evaluation method of bubble discharge easiness 1 (removing easiness)]

The release liner of graphite composite sheet is peeled off, under 23 DEG C and 50%RH atmosphere, put on the surface of above-mentioned adhesive part Vertical 200mm × horizontal 200mm aluminium sheet is put, is placed 5 seconds with applying the state of 10N loads on aluminium sheet, so as to temporarily be glued Paste thing.

Then, make it is above-mentioned temporarily paste upset after, from the face of graphite composite sheet side make 2kg rollers make a round trip and to it Pressurizeed, so as to obtain layered product.

10 above-mentioned layered products are made by the above method.Heaving for graphite flake is observed by visual observation, so as to confirm in structure It whether there is bubble between the adhering agent layer and aluminium sheet of the above-mentioned graphite composite sheet of above-mentioned layered product.Based on passing through the above method The quantity of layered product existing for bubble can not be confirmed, evaluate above-mentioned bubble discharge easiness.

[evaluation method of bubble discharge easiness 2 (removing easiness)]

By the way that the release liner of graphite composite sheet is peeled off to be pasted on the surface of the adhesive part occurred " PET25X1J0L " (Nippa Co. Ltd. systems, the smooth release liner of demoulding process face, Ra=0.03 μm), use laminating machine After being pressurizeed under conditions of line presses 3N/mm, placed 1 day in the environment of 23 DEG C.

Then, above-mentioned " PET25X1J0L " is peeled off, under 23 DEG C and 50%RH atmosphere, occurred by above-mentioned stripping The surface of adhesive part place vertical 200mm × horizontal 200mm aluminium sheet, place 5 to apply the state of 10N loads on aluminium sheet Second, so as to obtain temporary transient paste.

10 above-mentioned layered products are made by the above method.Heaving for graphite flake is observed by visual observation, so as to confirm in structure It whether there is bubble between the adhesive part of the above-mentioned graphite composite sheet of above-mentioned layered product and aluminium sheet.Based on by the above method without Method confirms the quantity of layered product existing for bubble, evaluates above-mentioned bubble discharge easiness.

The presence or absence of (when peeling off micro- adhesive film graphite composite sheet float)

It is micro- viscous in the surface fitting for forming the one-sided adhesive band " IL-05G " (Dainippon Ink Chemicals's system) of above-mentioned graphite composite sheet Film (has the micro- adhesion coating of silicone-based in the one side of 75 μm of PET film of thickness：Adhesion strength=0.05N/20mm), by the layer of gained Folded product are placed in aluminium sheet, are made a round trip using 2kg rollers on its surface, so as to which they be pasted.

After above-mentioned stickup 1 minute, by above-mentioned micro- adhesive film with 5m/min speed relative to above-mentioned graphite composite sheet Surface peeled off along 180 ° of directions after, evaluate whether above-mentioned graphite composite sheet floats from the surface of aluminium sheet by visual observation.To implementing The graphite composite sheet obtained in example and comparative example makes 10 stacking product respectively, carries out above-mentioned experiment.Above-mentioned experiment nothing will be passed through The quantity that method confirms the stacking product that graphite composite sheet floats from the surface of above-mentioned aluminium sheet is recorded in following tables.

(evaluation method of outward appearance)

Above-mentioned graphite composite sheet is pasted on aluminium sheet, under fluorescent light from the upper surface 30cm apart from above-mentioned graphite composite sheet Position observation when, entered on the basis of it whether can recognize the shape (above-mentioned almost diamond shape, circular shape etc.) of adhesive part Row evaluation.The shape person for being beyond recognition above-mentioned adhesive part completely is evaluated as " ◎ ", will somewhat recognize one of above-mentioned shape Divide person to be evaluated as "○", will clearly recognize above-mentioned shape person and be evaluated as "×".It should be noted that for such as comparative example 1 It is shown to be coated with sticker in the whole face of supporter and the example formed with adhering agent layer, because adhesive part does not form preboarding Shape, so as to which its shape can not be recognized by the above method, therefore do not evaluate and be set to "-".

[number of adhesive part]

The number of adhesive part is obtained as follows：Using electron microscope observation adhesive tape any range (moving direction 5cm and Width 5cm square) or (moving direction 1cm and width 1cm square) scope and counted.

[table 1]

[table 2]

[table 3]

[table 4]

[table 5]

[table 6]

In table " almost diamond 1 " refers to the angle in the corner of the moving direction towards adhesive tape for 60 ° (towards width side To corner angle be 120 °) diamond shaped adhesive part (Fig. 1), " almost diamond 2 " refers to the mobile side towards adhesive tape To corner angle be 30 ° (angle towards the corner of width is 150 °) diamond shaped adhesive part, it is " substantially square Shape " refers to that the angle in the corner of the moving direction towards adhesive tape is 90 ° (angle towards the corner of width is 90 °) Square shape adhesive part, " circular " refers to the adhesive part of shape shown in Fig. 2, and " substantially hexagon (oblique line) " refers to figure The adhesive part of shape shown in 3, " substantially quadrangle (oblique line) " refer to the adhesive part of shape shown in Fig. 4.

The adhesive tape of embodiment on any one face due to having multiple independent adhering agent layers, therefore bubble discharge is held Easy property is excellent.On the other hand, in the adhesive tape of comparative example 1, because adhesion coating is smooth, therefore do not have alveolate passing away, gas Bubble discharge easiness significance difference.Comparative example 2, comparative example 3 adhesive tape in, due to adhesion coating have bumps, thus while initial stage Bubble discharge easiness is excellent, but makes the bubble discharge easiness reduction when elapsing the time after stickup release liner into.

The explanation of symbol

1 supporter

2 adhesive parts

3 adhesive tapes

4 graphite flakes

5 one-sided adhesive bands

6 double-sided adhesive tapes

Claims

1. a kind of adhesive tape, it is in viscose glue of at least one face (a) side of supporter (A) with the adhesive part (B) of more than 2 Band, it is characterised in that the region without adhesive part (B), the region between the adhesive parts of described more than 2 (B) be present Communicated with the end of the adhesive tape.

2. adhesive tape according to claim 1, the adhesive part (B) from a face (a) side of the supporter (A) When, substantially circular in shape, the substantially quadrangle or substantially hexagon of the adhesive part (B).

3. adhesive tape according to claim 1 or 2, the arbitrary adhesion of selection from the adhesive parts of described more than 2 (B) Portion (b1) and the distance of the adhesive part (b2) close to the adhesive part (b1) are below 0.5mm.

4. according to adhesive tape according to any one of claims 1 to 3, there is the region of the adhesive part (B) relative to described Ratio shared by the area in one face (a) of supporter (A) is 10%~99%.

5. according to adhesive tape according to any one of claims 1 to 4, in the moving direction 1cm of the adhesive tape and width side To in the range of 1cm, 120~2000 adhesive parts (B) be present.

6. according to adhesive tape according to any one of claims 1 to 5, gross thickness is less than 20 μm.

7. according to adhesive tape according to any one of claims 1 to 6, the 180 ° of peeling adhesion forces determined using test film are 2N/20mm~12N/20mm scope, the test film obtain as follows：Horizontalization cunning is uploaded in the face with the adhesive part (B) Stainless steel plate, made a round trip using 2kg rollers so that they are crimped, and it is small to place under conditions of 23 DEG C and 50%RH 1 When and obtain.

8. according to adhesive tape according to any one of claims 1 to 7, its be used for generating component and radiating component be bonded or The hardware of person and generating component contact is bonded with radiating component.

9. adhesive tape according to claim 8, the radiating component is graphite flake or graphene film.

A kind of 10. fin, by pasting arbitrary one-sided adhesive band in a surface side of radiating component, in the radiating component Another surface side paste adhesive tape according to any one of claims 1 to 8 and form.

11. a kind of electronic equipment, it is to have the right with being pasted on the hardware in generating component or with generating component contact It is required that the electronic equipment of the composition of fin described in 10, it is characterised in that there are following compositions：The fin has institute The face for stating adhesive part (B) is glued to the generating component or the hardware.

12. a kind of manufacture method of adhesive tape, it is characterised in that at least one face (a) of supporter, by intaglio plate coating side Method or slot die coating method coating sticker, so as to formed circular, substantially quadrangle or substantially 2 of hexagon with On adhesive part (B).