CN107236472A

CN107236472A - Glass-cutting adhesive sheet and its manufacture method

Info

Publication number: CN107236472A
Application number: CN201710194803.9A
Authority: CN
Inventors: 西田卓生; 坂本美纱季
Original assignee: Lintec Corp
Current assignee: Lintec Corp
Priority date: 2016-03-29
Filing date: 2017-03-28
Publication date: 2017-10-10
Also published as: JP2017179029A; TW201734168A; KR20170113059A; JP6673734B2; TWI726973B

Abstract

The present invention is less likely to occur chip and disperses and can suppress to collapse the skew of broken and chip, can well pick up and not allow to be also easy to produce glass-cutting adhesive sheet and its manufacture method of cull when providing a kind of cutting.The glass-cutting adhesive sheet that the present invention is provided, it possesses：Base material and be laminated in the base material at least one side adhering agent layer, wherein, the thickness of the base material is for 30 μm less than 130 μm, and the thickness of the adhering agent layer is more than 9 μm and for less than 40 μm.

Description

Glass-cutting adhesive sheet and its manufacture method

Technical field

Use viscous the present invention relates to a kind of glass-cutting for cutting glass plate, to obtain chip glass (glass chip) Piece and its manufacture method.

Background technology

When manufacture is loaded into the camera module of mobile phone and smart mobile phone, it is necessary to trickle sheet glass.It is such Sheet glass can be cut a glass sheets and obtained by using cutting sheet material.I.e., it is possible to by the way that glass plate is affixed on into cutting After sheet material, the glass plate is cut using cutting blade, the glass (hereinafter sometimes referred to " chip glass ") of monolithic is obtained.Closely Nian Lai, because of the development of the slimming of smart mobile phone etc., the camera module loaded is also minimized, as a result, needing to manufacture more Thin small chip glass (hereinafter sometimes referred to " small chip ").

During the crisp material such as glass-cutting, easily produce and collapse broken (chipping).Here, so-called " collapsing broken ", refers to cutting When chip glass end or cut the meaning of face defect.The thickness of glass plate is thinner, and more significantly generation is collapsed broken.

In addition, for above-mentioned cutting sheet material, when being cut, it is desirable to will not occur formed chip glass and be cut from this Cut the phenomenon (hereinafter sometimes referred to as " chip disperses ") dispersed with being peeled off on sheet material.

Patent Document 1 discloses a kind of glass substrate cutting adhesion that adhering agent layer is provided with base material film Piece.At this, Patent Document 1 discloses the film that by using thickness be more than 130 μm and tensile modulus of elasticity is more than 1GPa As base material film, the thickness for further making adhering agent layer is less than 9 μm, so as to reduce adhesive sheet because of the pressure of cutting blade Deformation, can suppress generation and collapse broken and chip to disperse (0010 section of patent document 1).

Prior art literature

Patent document

Patent document 1：Japanese Patent No. 3838637

The content of the invention

The technical problem to be solved in the present invention

In recent years, the miniaturization of camera module is continued to develop, and the size of required chip glass also becomes very small. Adhesive sheet disclosed in patent document 1, it is impossible to which the chip for fully suppressing such small chip disperses.

In addition, along with the miniaturization of chip glass, also becoming easily to produce referred to as chip skew (die shift) Problem.This is because, when manufacturing small chip, the contact area of chip glass and adhesive sheet diminishes, and become easily because of cutting Vibration etc. makes glass plate or chip glass are shifted on adhesive sheet.When producing chip skew, it is impossible to enter in expected position Row cutting, and the chip glass with desired shape can not be obtained.Therefore, for the manufacture of chip, it is desirable to will not occur Chip is offset.

In addition, in the manufacture of chip glass, then above-mentioned cutting action, cutting piece is adhered to chip glass sometimes The state of material, the process being picked up.In the process, it is desirable to can be picked up well, without making chip glass because picking up Take and be damaged.Furthermore, the chip glass requirement picked up will not be adhered to and carry out the sticker of Self cleavage sheet material (following sometimes referred to as For " cull ").

The present invention in view of above-mentioned actual conditions and complete, it is therefore intended that do not allow to be also easy to produce chip when a kind of cutting is provided and fly Dissipate and can suppress to produce and collapse the skew of broken and chip, can well pick up and not allow the glass-cutting for being also easy to produce cull to use viscous Piece and its manufacture method.

Solve the technological means of technical problem

To achieve the above object, first, the present invention provides a kind of glass-cutting adhesive sheet, and it possesses：Base material and stacking In the adhering agent layer of at least one side of the base material, it is characterised in that：The thickness of the base material is 30 μm less than 130 μ M, the thickness of the adhering agent layer is more than 9 μm and is less than 40 μm (inventing 1).

In foregoing invention (invention 1), by making base material that there is above-mentioned thickness, the operation of glass-cutting adhesive sheet can be made Property is good.In addition, by making adhering agent layer have above-mentioned thickness, adhering agent layer can play excellent viscosity, and chip glass can be good The result of glass-cutting adhesive sheet is held in well, in cutting, can be suppressed generation chip and be dispersed.In addition, by making adhesion Oxidant layer and base material have above-mentioned thickness respectively, can suppress to collapse the skew of broken and chip, and can pick up well, and do not allow It is also easy to produce cull.Particularly, it is inclined on collapsing broken, chip when the sticker included in adhering agent layer is the sticker of X-type described later The effect of shifting, pickup and cull becomes notable.

In foregoing invention (invention 1), the adhering agent layer preferably forms (invention by the sticker of energy ray-curable 2)。

In foregoing invention (invention 2), preferably described adhering agent layer is by sticker that adhesion agent composition is formed and shape Into the adhesion agent composition contains (methyl) acrylate copolymer (A) (hair that side chain is imported with energy ray-curable group It is bright 3).

In foregoing invention (invention 1~3), the adhering agent layer, pass through JIS Z0237：Method described in 1991 It is middle by peeling rate be changed to 1mm/ minutes condition, using probe viscosity determine energy be preferably 0.01~5mJ/5mm Φ (invention 4).

In foregoing invention (invention 1~4), storage modulus of the adhering agent layer at 23 DEG C is preferably 30~100kPa (invention 5).

In foregoing invention (invention 1~5), the face of the side opposite with the base material of the adhering agent layer is pasted onto alkali-free On glass, after standing 20 minutes, the glass-cutting adhesive sheet is to the adhesion strength of the alkali-free glass, preferably 8000 ~25000mN/25mm (invention 6).

In foregoing invention (invention 2,3), the face of the side opposite with the base material of the adhering agent layer is pasted on alkali-free Glass, after to the adhering agent layer irradiation energy line, adhesion strength of the glass-cutting adhesive sheet to the alkali-free glass Preferably 50~250mN/25mm (invention 7).

In foregoing invention (invention 2,3,7), the adhering agent layer is after irradiation energy line, the stretching bullet at 23 DEG C Property modulus be preferably 15~1500MPa (invention 8).

In foregoing invention (invention 1~8), storage modulus of the base material at 23 DEG C is preferably 100~8000MPa (invention 9).

In foregoing invention (invention 3), the adhesion agent composition is preferably further containing crosslinking agent (C) (invention 10).

In foregoing invention (invention 1~10), the glass-cutting is preferred for glass plate cutting into plane with adhesive sheet With 1 × 10^-6mm²~1mm²Area chip glass (invention 11).

Second, the present invention provides a kind of manufacture method of glass-cutting adhesive sheet, and it is used to manufacture the glass-cutting The method of adhesive sheet (invention 3), it is characterised in that include：Make at least by (methyl) alkyl acrylate monomer (A1) and have The acrylic copolymer (AP) of monomer (A2) copolymerization containing functional group of reactive functional groups, with can with it is described The energy content line solidification of the functional group of the functional group reactionses of monomer (A2) containing functional group and the carbon-to-carbon double bond of energy ray-curable Property group compound (A3) reaction, prepare and (methyl) acrylate copolymer of energy ray-curable group be imported with side chain (A) process；And using containing the adhesion agent composition for being somebody's turn to do (methyl) acrylate copolymer (A), at least one side of base material It is laminated the process (invention 12) of adhering agent layer.

In foregoing invention (invention 12), preferably make the acrylic copolymer (AP) and the energy content line curability The reaction of the compound (A3) of group, selected from the organic compound containing zirconium, the organic compound of titaniferous and stanniferous is organising Carried out in the presence of at least one of compound organo-metallic catalyst (D) (invention 13).

Invention effect

Glass-cutting according to manufactured by the glass-cutting of the present invention with the manufacture method of adhesive sheet and the utilization present invention is used Adhesive sheet, is less likely to occur chip and disperses during cutting, and can suppress to collapse the skew of broken and chip, can pick up well, and And do not allow to be also easy to produce cull.

Embodiment

Hereinafter, embodiments of the present invention are carried out.

The glass-cutting of present embodiment possesses base material and stacking with adhesive sheet (hereinafter sometimes referred to simply as " adhesive sheet ") It is configured in the adhering agent layer of the one side of base material.

In the glass-cutting adhesive sheet of present embodiment, the thickness of base material is for 30 μm less than 130 μm.In addition, The thickness of adhering agent layer is more than 9 μm and for less than 40 μm.

In the glass-cutting adhesive sheet of present embodiment, by making base material that there is above-mentioned thickness, the behaviour of glass-cutting Become good as property.

In addition, in the glass-cutting adhesive sheet of present embodiment, by making adhering agent layer that there is above-mentioned thickness, adhesion Oxidant layer can play excellent viscosity.Thus, it can be maintained at well on adhesive sheet by chip glass formed by cutting.It is tied Really, even the chip glass is impacted in cutting, come off prevented also from chip glass from adhesive sheet.That is, it can prevent Only chip disperses.

Furthermore, in the glass-cutting adhesive sheet of present embodiment, as described above, excellent by playing adhesive sheet Viscosity, in cutting, chip glass can be maintained on adhesive sheet well.As a result, can suppress due to chip glass viscous Collision between the chip glass the skew on piece and produced, or glass plate or chip glass cut face and cutting blade Accident collision.In addition, it is above range by the thickness for making base material, even if thin glass plate is cut into small chip, Also it can suppress to collapse broken.

Furthermore, in the glass-cutting adhesive sheet of present embodiment, as described above, excellent by playing adhesive sheet Viscosity, in cutting, glass plate can be maintained on adhesive sheet well, thus can suppress movement of the glass plate on adhesive sheet. In addition, by making the thickness of base material in above range, when thin glass plate is cut into small chip, it can also suppress to occur Chip is offset.

Furthermore, in the glass-cutting adhesive sheet of present embodiment, by making the thickness of adhering agent layer in above range, It can make adhesive sheet that there is the adhesion strength for the pickup that can easily carry out chip glass.In addition, by making the thickness of base material upper Scope is stated, adhesive sheet has the result of good flexibility, can be picked up well.

Furthermore, it is upper by making adhering agent layer and base material have respectively in the glass-cutting adhesive sheet of present embodiment Thickness is stated, the chip glass picked up is not easy to remain the cull from adhering agent layer.Particularly, adhering agent layer is by X described later During the sticker formation of type, by making the sticker of the X-type be free of low molecule chemical combination as energy ray-curable compound (B) Thing, the compound will not be remained on chip glass.In addition, when forming adhesion agent composition by the sticker of X-type, the sticker Composition is easily uniformly crosslinked, resulting sticker, overall to be equably crosslinked., can be effective by above means Ground suppresses to produce cull.

1. base material

In the glass-cutting adhesive sheet of present embodiment, the thickness of base material for 30 μm less than 130 μm, preferably For more than 50 μm and be less than 120 μm, particularly preferably more than 70 μm and for less than 110 μm.If the thickness of base material is less than 30 μm, Then become the vibration of the easily generation adhesive sheet in cutting action, glass plate becomes easily to shift on adhesive sheet, as a result, becoming Obtain easily to produce and collapse the skew of broken and chip.Moreover, becoming when operating adhesive sheet or being easily broken off during expansion process.The opposing party Face, if the thickness of base material is more than 130 μm, the overall flexibility of adhesive sheet can be reduced, and be pasted on ring frame or cutting When using fixture, or during cutting glass plate, adhesive sheet becomes easily to come off from ring frame or fixture.

In the glass-cutting adhesive sheet of present embodiment, storage modulus of the base material at 23 DEG C be preferably 100~ 8000MPa, particularly preferably 1500~7000MPa, more preferably 2000~6000MPa.By making base material at 23 DEG C Storage modulus be more than 100MPa, adhesive sheet can be lowered and produces vibration in cutting action, suppression glass plate is on adhesive sheet Displacement, as a result, can effectively suppress generation collapses the skew of broken and chip.In addition, by making storage modulus of the base material at 23 DEG C In below 8000MPa, it can be ensured that the flexibility of base material, make the extensibility (dilatancy) of base material more excellent.Thus, in expansion process When, adhesive sheet shows more excellent dilatancy, the pickup of the chip glass after being cut better.In addition, base material Storage modulus at 23 DEG C, determining device using the dynamic modulus of elasticity, (TA Instrument companies manufacture, trade name " DMA Q800 "), determined with following condition.

0 DEG C of on-test Wen Du ︰

200 DEG C of off-test Wen Du ︰

Rise 3 DEG C/min of Wen Sudu ︰

Pin Shuai ︰ 11Hz

20 μm of Zhen Fu ︰

The base material of the glass-cutting adhesive sheet of present embodiment, as long as with above-mentioned thickness, its constituent material has no spy Do not limit.Base material may include the film (resin film) using the material of resinae as main material.Preferred substrates are only by resin film structure Into.As the specific example of resin film, vinyl-vinyl acetate copolymer film, ethene-(methyl) acrylic acid copolymer can be included The ethene copolymer films such as thing film, ethene-(methyl) acrylate copolymer film；Polyethylene film, polypropylene screen, polybutene film, The TPO films such as polybutadiene film, polymethylpentene film, ethylene-norbornene copolymer film, norbornene resin film；Polychlorostyrene The polyvinyl chloride films such as vinyl film, vinyl chloride copolymer film；Polyethylene terephthalate film, polybutylene terephthalate The polyesters film such as ester film；Polyurethane film；Polyimide film；Polystyrene film；Polycarbonate membrane；Fluororesin film etc..It is used as poly- second The example of alkene film, can include low density polyethylene (LDPE) (LDPE) film, straight-chain low density polyethylene (LLDPE) film, high-density polyethylene Alkene (HDPE) film etc..In addition, it is possible to use the Modified Membrane such as cross linking membrane, ionic polymer membranes of these films.Base material can be by upper State a kind of constituted film in film or the two or more stacked films combined by above-mentioned film.Wherein, from easy Reach from the viewpoint of described storage modulus, preferably use polyethylene terephthalate film.In addition, in this manual " (methyl) acrylic acid ", refer to both acrylic acid and methacrylic acid.Other similar terms are also identical.

In the substrate, in above-mentioned film, also can containing pigment, dyestuff, fire retardant, plasticizer, antistatic additive, lubricant, The various additives such as filler.As pigment, such as can include titanium dioxide, carbon black.In addition, as filler, can illustrate such as Organic-based material, the mineral-type materials as aerosil as melmac and the gold as nickel particles Belong to class material.As the content of these additives, though be not particularly limited, be preferably can play to the desired function of base material and The scope of flatness and flexibility is not lost.

For make adhering agent layer solidification use ultraviolet as irradiation energy line when, preferred substrates are to ultraviolet with wearing Permeability.In addition, during using electron beam as the energy line, preferred substrates have penetrability to electron beam.

The face of adhering agent layer side in base material, to improve the adaptation with adhering agent layer, can be imposed at bottom layer treatment, corona Reason, corona treatment, roughened processing (cloudy surface processing) etc. are surface-treated.As roughened processing, for example, it can include pressure Line processing method, sandblasting processing method etc..In addition, setting various paintings on the face of side opposite with adhering agent layer that also can be in the substrate Film.

2. adhering agent layer

(1) the thickness transitivity of adhering agent layer

In the glass-cutting adhesive sheet of present embodiment, the thickness of adhering agent layer is excellent more than 9 μm and for less than 40 μm Choosing is more than 9 μm and for less than 30 μm, particularly preferably more than 9 μm and for less than 20 μm.When the thickness of adhering agent layer is less than 9 μm, Then the viscosity of adhering agent layer can become insufficient, chip glass fully can not be held in into adhesive sheet in cutting, be used as knot Really, it is impossible to prevent chip from dispersing.In addition, when the thickness of adhering agent layer is more than 40 μm, then adhesion strength becomes too much, and can not be good Pick up chip glass in ground.Furthermore, adhering agent layer easily rocks during cutting, as a result, easily collapsing the skew of broken and chip.

The energy determined to adhering agent layer using probe sticky (probe tack) (is also referred to as " viscosity in this specification Value "), preferably 0.01~5mJ/5mm Φ, particularly preferably 0.13~4mJ/5mm Φ, more preferably 0.18~3.5mJ/ 5mmΦ.Chip is produced by making viscosity value in above range, when can suppress cutting to disperse.In addition, in this manual, adhesion When oxidant layer is formed by energy ray-curable sticker described later, the viscosity value is by the value that is determined before irradiation energy line.This Outside, in this manual, viscosity value is with JIS Z0237：Method described in 2009, peeling rate is changed to 1mm/ minutes Condition is measured, shown in the test example of details as be described hereinafter.

Storage modulus of the adhering agent layer at 23 DEG C is preferably 30~100kPa, particularly preferably 40~90kPa, further Preferably 50~80kPa.By making the modulus of elasticity in above range, glass-cutting adhesive sheet can be made to play better glue Put forth effort, thus, chip glass can be maintained on adhesive sheet well, can effectively suppress chip and disperse.In addition, in this explanation In book, when adhering agent layer is formed by energy ray-curable sticker described later, the storage modulus is before irradiation energy line The value determined.In addition, adhering agent layer is before irradiation energy line, the assay method of the storage modulus at 23 DEG C, as be described hereinafter Test example shown in.

Storage modulus of the adhering agent layer at 100 DEG C, preferably 3~50kPa, particularly preferably 3~30kPa, further Preferably 10~30kPa.Typically in glass-cutting adhesive sheet, frictional heat can be produced during cutting, adhering agent layer can become about 100 DEG C of the condition of high temperature.Under the condition of high temperature so, by making adhering agent layer show more than 3kPa storage modulus, It can suppress to rock during cutting, suppress glass plate and shifted on adhesive sheet, as a result, becoming more difficult collapses broken and crystalline substance Piece is offset.In addition, by making the storage modulus be below 50kPa, the modulus of elasticity of adhering agent layer will not terrifically be uprised, can obtained To good adherence, as a result, chip when can effectively suppress cutting disperses.Furthermore, in this manual, adhering agent layer When being formed by the sticker of energy ray-curable described later, the storage modulus is the value determined before irradiation energy line.This Outside, the assay method of storage modulus of the adhering agent layer before irradiation energy line at 100 DEG C, shown in test example as be described hereinafter.

When adhering agent layer is formed by the sticker of energy ray-curable described later, adhering agent layer after irradiation energy line, Tensile modulus of elasticity at 23 DEG C is preferably 15~1500MPa, particularly preferably 20~1000MPa, more preferably 20~ 500MPa.By making the tensile modulus of elasticity be more than 15MPa, the chip glass after energy line can be irradiated better Pickup.In addition, by making the tensile modulus of elasticity be below 1500MPa, the dilatancy of glass-cutting adhesive sheet can be made better It is good, and can be picked up better.Furthermore, adhering agent layer is before irradiation energy line, the tensile modulus of elasticity at 23 DEG C Assay method, shown in test example as be described hereinafter.

The gel fraction of the sticker of composition adhering agent layer, preferably 12.5~100%, particularly preferably 37.5~ 100%, more preferably 50~95%.The gel fraction of sticker within the above range when, then readily satisfy above-mentioned viscous The physical property of oxidant layer.In addition, being more than 12.5% by making the gel fraction of sticker, the cohesiveness of sticker can be made good, The durability of adhering agent layer is maintained.

(2) sticker of adhering agent layer is constituted

Constitute adhering agent layer sticker can be non-curable sticker, or curability sticker.In addition, solid The sticker for the property changed can be the state after the state before solidification, or solidification.When adhering agent layer is made up of multilayer, also it can be combined The sticker of non-curable and the sticker of curability.As the sticker of non-curable, for example, it can include acrylic compounds and glue Agent, rubber-like sticker, silicone sticker, polyurethanes sticker, polyesters sticker, glymes sticker Deng.As the sticker of curability, such as can include energy ray-curable sticker, Thermocurable sticker.

In the glass-cutting adhesive sheet of present embodiment, adhering agent layer is preferably by the adhesion dosage form of energy ray-curable Into particularly preferably being formed by the acrylic compounds sticker of energy ray-curable.By making adhering agent layer by energy ray-curable Sticker is formed, and can solidify sticker before pickup process to adhering agent layer irradiation energy line.Thus, can moderately it drop Low adhesive sheet can be picked up well to the adhesion strength of chip glass.

Generally, as the acrylic compounds sticker of energy ray-curable, it there are：By being imported with energy containing side chain (methyl) acrylate copolymer (A) of line curability group and without in addition to (methyl) acrylate copolymer (A) The acrylic compounds sticker that the adhesion agent composition of energy ray-curable compound (B) is formed (below, is conveniently referred to as sometimes " X-type ")；By containing the acrylic polymer (N) without energy ray-curable and except above-mentioned (methyl) acrylic ester copolymer The acrylic compounds sticker that the adhesion agent composition of energy ray-curable compound (B) beyond thing (A) is formed (below, has When be conveniently referred to as " Y types ")；And by being imported with (methyl) acrylate copolymer of energy ray-curable group containing side chain (A) the adhesion agent composition institute shape of the energy ray-curable compound (B) and in addition to (methyl) acrylate copolymer (A) Into acrylic compounds sticker (following, be conveniently referred to as sometimes " Z-type ").

In the glass-cutting adhesive sheet of present embodiment, adhering agent layer can by any of the above-described type adhesion dosage form Into.Particularly, the sticker of X-type is due to showing higher modulus of elasticity in the condition of high temperature, therefore, when can effectively suppress cutting Collapse the skew of broken and chip.In addition, the sticker of X-type, due to without degraded as energy ray-curable compound (B) Compound, therefore, the compound will not be remained on chip glass, also, during using crosslinking agent described later, can make entirety equably Crosslinking.Therefore, it can effectively suppress to produce cull.Furthermore, in the sticker of X-type, participate in solid as caused by irradiation energy line The composition of change, only above-mentioned this composition of (methyl) acrylate copolymer (A), thus it is not easy to occur by Multiple components When occur component ratio it is unbalanced caused by solidification it is bad, and can solidify well.Thus, due to easily by energy The irradiation of line declines adhesion strength, therefore, pickup that can be better.In summary, the sticker of X-type is preferably used.

Above-mentioned is imported with (methyl) acrylate copolymer (A) of energy ray-curable group and without energy in side chain The acrylic polymer (N) of line curability is measured, can be directly contained in adhering agent layer, can also enter with crosslinking agent described later (C) Row cross-linking reaction and think the form of cross-linking agent and be contained in adhering agent layer.

(2-1) is imported with (methyl) acrylate copolymer (A) of energy ray-curable group in side chain

(methyl) acrylate copolymer (A) of energy ray-curable group is imported with side chain, preferably by making propylene Acid copolymer (AP), obtain with the reaction of the compound (A3) of energy content line curability group.

Acrylic copolymer (AP), preferably by least making (methyl) alkyl acrylate monomer (A1), and with anti- Monomer (A2) copolymerization containing functional group of answering property functional group and obtain.

As (methyl) alkyl acrylate monomer (A1), the preferably carbon number of alkyl is 1~18, particularly preferably carbon Atomicity 1~4.As the specific example of (methyl) alkyl acrylate monomer (A1), can include (methyl) methyl acrylate, (methyl) ethyl acrylate, (methyl) propyl acrylate, (methyl) n-butyl acrylate, (methyl) acrylic acid n-pentyl ester, (first Base) the just own ester of acrylic acid, (methyl) 2-EHA, (methyl) Isooctyl acrylate monomer, the positive last of the ten Heavenly stems ester of (methyl) acrylic acid, (methyl) lauryl acrylate, (methyl) myristyl ester, (methyl) acrylic acid palm ester, (methyl) stearyl acrylate acyl Ester etc..These monomers can be used alone, and two or more use also can be combined.

The quality of structure division from above-mentioned (methyl) alkyl acrylate monomer (A1) accounts for acrylic copolymer (AP) ratio of overall quality, particularly preferably preferably 50~98 mass %, 60~95 mass %, more preferably 70 ~90 mass %.

As the monomer (A2) containing functional group, using with can be had with the compound (A3) of energy content line curability group The monomer of the reactive functional groups of some functional group reactionses.The functional group having as the monomer (A2) containing functional group, for example Hydroxyl, carboxyl, amino, substituted-amino, epoxy radicals etc. can be included, wherein preferably hydroxyl and carboxyl, particularly preferably hydroxyl. In addition, during using crosslinking agent described later (C), the reactive functional groups that the monomer (A2) containing functional group has also can be with the crosslinking Agent (C) is reacted.

During using the monomer (monomer of hydroxyl) with hydroxyl as monomer (A2) containing functional group, as its example, (methyl) acrylic acid hydroxy alkyl ester can be included, as its specific example, can include (methyl) acrylic acid 2- hydroxy methacrylates, (methyl) acrylic acid 2- hydroxy propyl esters, (methyl) acrylic acid 3- hydroxy propyl esters, (methyl) acrylic acid 2- hydroxybutyls, (methyl) third Olefin(e) acid 3- hydroxybutyls, (methyl) acrylic acid 4- hydroxybutyls etc..Wherein, examined in terms of the reactivity and copolymerizable of hydroxyl Consider, be preferably (methyl) acrylic acid 2- hydroxy methacrylates.These monomers can be used alone, and two or more use also can be combined.

During using the monomer (carboxylic monomer) with carboxyl as monomer (A2) containing functional group, as its example, Ethene unsaturated carboxylic acid can be included, as its specific example, acrylic acid, methacrylic acid, crotonic acid, Malaysia can be included Acid, itaconic acid, citraconic acid etc..Wherein, from the aspect of the reactivity and copolymerizable of carboxyl, preferred acrylic acid.These monomers can To be used alone, two or more use also can be combined.

Different types of monomer (A2) containing functional group is used in addition, also can be combined.For example also can be by above-mentioned hydroxyl Monomer used with carboxylic combination of monomers.

The quality for carrying out the structure division of the monomer (A2) of self-contained functional group accounts for the overall quality of acrylic copolymer (AP) Ratio, preferably 5~40 mass %, particularly preferably 7~35 mass %, more preferably 10~30 mass %.Pass through Make the ratio for carrying out the quality of the structure division of the monomer (A2) of self-contained functional group in above range, energy content line curability base can be made The import volume of (methyl) acrylate copolymer (A) that the compound (A3) of group is imported with energy ray-curable group to side chain exists Suitable scope.In addition, using crosslinking agent described later (C), can when making the monomer (A2) containing functional group with crosslinking agent (C) reaction Make the crosslinking degree of the crosslinking agent (C), i.e. gel fraction in suitable scope, can control the physical property such as the cohesiveness of adhering agent layer.

On acrylic copolymer (AP), as its monomer is constituted, except above-mentioned (methyl) alkyl acrylate Outside monomer (A1) and monomer (A2) containing functional group, it can also contain other monomers.

As other monomers, such as (methyl) methoxyethyl methyl esters, (methyl) acrylic acid methoxy can be included (methyl) third containing alkoxyalkyl such as base ethyl ester, (methyl) ethioxy methyl esters, (methyl) ethoxyethyl acrylate Olefin(e) acid ester；(methyl) cyclohexyl acrylate etc. has (methyl) acrylate of aliphatic ring；(methyl) phenyl acrylate etc. has There is (methyl) acrylate of aromatic ring；The acrylamide of the non-crosslinked property such as acrylamide, Methacrylamide；(methyl) third The tertiary amine groups with non-crosslinked property of olefin(e) acid N, N- dimethylamino ethyl ester, (methyl) acrylic acid N, N- dimethylamino propyl ester etc. (methyl) acrylate；Vinyl acetate；Styrene etc..These monomers can be used alone, and two or more make also can be combined With.

The polymerization methodses of acrylic copolymer (AP) can be random copolymer, or block copolymer.In addition, on Polymerization, is not particularly limited, it is possible to use general polymerization is polymerize.

The compound (A3) of energy content line curability group, with functional group reactionses that can be with the monomer (A2) containing functional group Functional group and energy ray-curable carbon-to-carbon double bond.

As functional group that can be with the functional group reactionses of the monomer (A2) containing functional group, for example, it can include isocyanates Base, epoxy radicals etc., wherein, it is preferably the reactive high NCO with hydroxyl.

As the curability group (energy ray-curable group) of the carbon-to-carbon double bond with energy ray-curable, it is preferably (methyl) acryloyl group etc..Furthermore it is preferred that there are 1 in the compound (A3) of energy content line curability group in 1 molecule ~5, particularly preferably there are 1~3 energy ray-curable carbon-to-carbon double bond.

As the example of the compound (A3) of energy content line curability group, 2- methylacryoyloxyethyls can be included different Cyanate, adjacent isopropenyl-bis (alpha, alpha-dimethylbenzyl) based isocyanate, methacryloyl isocyanate, allyl iso cyanurate, 1,1- (double acryloyloxymethyls) ethyl isocyanate；Diisocyanate cpd or polyisocyanate compounds, with hydroxyl second Acryloyl group monoisocyanate compound obtained from base (methyl) acrylate reactions；Diisocyanate cpd or poly- isocyanide Ester compound, acryloyl group Dan Yi obtained from the reaction with polyol compound and hydroxyethyl (methyl) acrylate Cyanate esters etc..Wherein, particularly preferred 2- methylacryoyloxyethyls isocyanates.In addition, energy content line curability base The compound (A3) of group, can be used alone, and two or more use also can be combined.

It is imported with side chain in the preparation of (methyl) acrylate copolymer (A) of energy ray-curable group, acrylic acid The preparation of analog copolymer (AP) and acrylic copolymer (AP) are anti-with the compound (A3) of energy content line curability group Should, it can be carried out by conventional method.In the reaction process, the monomer containing functional group in acrylic copolymer (AP) (A2) functional group reactionses in reactive functional groups, with the compound (A3) of energy content line curability group.Thus, obtain Side chain is imported with (methyl) acrylate copolymer (A) of energy ray-curable group.In addition, as described later, acrylic compounds are common Polymers (AP) and the reaction of the compound (A3) of energy content line curability group, the preferably presence in organo-metallic catalyst (D) It is lower to carry out.

It is imported with side chain in (methyl) acrylate copolymer (A) of energy ray-curable group, the solidification of energy content line The amount of reactive functional groups of the amount relative to the monomer (A2) containing functional group of the compound (A3) of property group, preferably 30~ 100 moles of %, particularly preferably 40~95 moles %, more preferably 50~90 moles %.

The weight average molecular weight (Mw) of (methyl) acrylate copolymer (A) of energy ray-curable group is imported with side chain Preferably 100,000~2,500,000, particularly preferably 150,000~2,000,000, more preferably 300,000~1,500,000.In addition, in this explanation Weight average molecular weight in book is the value that the conversion determined using gel permeation chromatography (GPC) method claims polystyrene standard.By making Side chain is imported with the weight average molecular weight (Mw) of (methyl) acrylate copolymer (A) of energy ray-curable group in above-mentioned model Enclose, it is ensured that the coating of adhesion agent composition, and the coherency of adhering agent layer can be made good, therefore, can obtain being suitable to cut The physical property cut.

(2-2) does not have the acrylic polymer (N) of energy ray-curable

As the acrylic polymer (N) without energy ray-curable, as long as without energy ray-curable, can make With the polymer of known acrylic compounds.The acrylic polymer, can be formed by a kind of acrylic monomer Homopolymer or the copolymer that is formed by multiple acrylic acid monomers or by one or more acrylic acid The copolymer that class monomer is formed with the monomer in addition to acrylic monomer.

The specific species of compound as acrylic monomer, is not particularly limited, as specific example, can include (methyl) acrylic acid, (methyl) acrylate, its derivative (acrylonitrile, itaconic acid etc.).As more specifically example, it can enumerate Go out above-mentioned alkyl acrylate monomer (A1) and the monomer (A2) containing functional group, in addition, (methyl) acrylic acid first can be included Epoxide methyl esters, (methyl) methoxyethyl acrylate, (methyl) ethioxy methyl esters, (methyl) ethoxyethyl acrylate Deng (methyl) acrylate containing alkoxyalkyl；(methyl) cyclohexyl acrylate etc. has (methyl) acrylic acid of aliphatic ring Ester；(methyl) phenyl acrylate etc. has (methyl) acrylate of aromatic ring；Acrylamide, Methacrylamide etc. are non-to be handed over The acrylamide of connection property；(methyl) acrylic acid N, N- dimethylamino ethyl ester, (methyl) acrylic acid N, N- dimethylamino propyl ester Deng (methyl) acrylate of the tertiary amine groups with non-crosslinked property；Vinyl acetate；Styrene etc..

The acrylic polymer (N) of non-energy line curability is in the reactivity with the monomer (A2) for coming self-contained functional group During functional group, from the degree for making crosslinking from the viewpoint of good scope, carry out the structural portion of the monomer (A2) of self-contained functional group The quality divided accounts for the ratio of the overall quality of acrylic polymer, preferably 1~20 mass % or so, more preferably 2~10 Quality %.

The weight average molecular weight (Mw) of acrylic polymer (N) without energy ray-curable is preferably 100,000~250 Ten thousand, particularly preferably 150,000~2,000,000, more preferably 200,000~1,500,000.By making third without energy ray-curable The weight average molecular weight (Mw) of alkene acids polymers (N) is in above-mentioned scope, it is ensured that the coating of adhesion agent composition, and can Make the coherency of adhering agent layer good, therefore, the physical property suitable for cutting can be obtained.

(2-3) energy ray-curable compound (B)

Energy ray-curable compound (B), polymerizing curable when referring to be irradiated by ultraviolet, electron beam Isoenergetical line Compound.As the example of above-mentioned energy ray-curable compound (B), low point with energy line polymerizable group can be included Son quantifies compound (mono-functional or multi-functional monomer and oligomer), specifically, and trimethylolpropane tris propylene can be used Acid esters, tetramethylol methane tetraacrylate, pentaerythritol triacrylate, dipentaerythritol monohydroxypentaacryande, two The acrylate such as the acrylate of pentaerythrite six, BDO diacrylate, 1,6- hexanediyl esters, two rings penta The acrylate of the skeletons containing annular aliphatic such as diene dimethoxy diacrylate, iso-bornyl acrylate, polyethylene glycol Diacrylate, oligoester acrylate, urethane acrylate oligomer, epoxy modification acrylate, polyether acrylate, The acrylic ester compounds such as itaconic acid oligomer.Such compound has energy ray-curable double bond in intramolecular, generally Molecular weight is 100~30000, preferably 300~10000 or so.

When adhering agent layer in the present embodiment is formed by above-mentioned Y type stickers, the energy in adhesion agent composition The content of line curability compound (B), relative to the acrylic polymer without energy ray-curable of 100 mass parts (N), preferably 20~200 mass parts, more preferably particularly preferably 40~160 mass parts, 40~150 mass parts.

When adhering agent layer in the present embodiment is formed by above-mentioned Z-type sticker, the energy in adhesion agent composition The content of line curability compound (B), the side chain relative to 100 mass parts is imported with (methyl) third of energy ray-curable group Olefin(e) acid ester copolymer (A), preferably 3~60 mass parts, particularly preferably 5~50 mass parts, more preferably 10~40 matter Measure part.

(3) crosslinking agent (C)

The adhesion agent composition of adhering agent layer in the present embodiment is formed, preferably comprising can make side chain be imported with energy (methyl) acrylate copolymer (A) of line curability group or the acrylic polymer (N) without energy ray-curable The crosslinking agent (C) of crosslinking.Now, the sticker in present embodiment, containing by making (methyl) acrylate copolymer (A) Or the acrylic polymer (N) and cross-linking agent obtained from the cross-linking reaction of crosslinking agent (C).By using the crosslinking agent (C), The gel fraction adjustment of sticker of adhering agent layer can will easily be formed in suitable scope, the physical property suitable for cutting is obtained.

As crosslinking agent (C) species, such as epoxy compounds, Polyisocyanate esters compound, metal can be included The polyimides such as chelates compound, aziridines compound (polyimine) class compound, melmac, ureaformaldehyde tree Fat, twain-aldehyde compound, methylol polymer, metal alkoxide, metal salt etc..Wherein, it is excellent from the consideration of the reasons such as cross-linking reaction is easily controlled Choosing uses epoxy compounds or Polyisocyanate esters compound, particularly preferably uses Polyisocyanate esters compound.

As epoxy compounds, can include double (N, the N'- diglycidyl amino methyl) hexamethylenes of such as 1,3-, N, N, N', N'- four glycidyl group meta-xylylenediamine, ethylene glycol diglycidylether, 1,6-HD two shrink sweet Oily ether, trimethylolpropane diglycidyl ether, 2-glycidyl aniline, 2-glycidyl amine etc..

Polyisocyanate esters compound is the compound for the NCO that every 1 molecule has more than 2.It can specifically enumerate Go out, the aromatic poly-isocyanate such as toluene di-isocyanate(TDI), '-diphenylmethane diisocyanate, XDI； The aliphatic polymeric isocyanates such as hexamethylene diisocyanate；IPDI, hydrogenation diphenylmethane diisocyanates Ester ring type PIC such as ester etc..Biuret body, the isocyanide urea of these Polyisocyanate esters compounds can further be included Acid esters body, addition body etc..As addition body, it can include and ethylene glycol, propane diols, neopentyl glycol, trimethylolpropane, castor-oil plant The reactant of the compound of the reactive hydrogens containing low molecule such as oil.

Crosslinking agent (C), can be used alone one kind, and two or more use also can be combined.

When sticker is X-type or Z-type, the content of the crosslinking agent (C) of the adhesion agent composition of adhering agent layer is formed, relative to The side chain of 100 mass parts is imported with (methyl) acrylate copolymer (A) of energy ray-curable group, preferably 0.01~15 Mass parts, particularly preferably 0.05~10 mass parts, more preferably 0.1~2 mass parts.In addition, when sticker is Y types, The content of the crosslinking agent (C) of the adhesion agent composition of adhering agent layer is formed, relative to the acrylic acid without energy ray-curable Birds of the same feather flock together compound (N), more preferably preferably 3~20 mass parts, particularly preferably 5~17 mass parts, 7~14 mass parts.

(4) organo-metallic catalyst (D)

To obtain (methyl) acrylate copolymer (A) that energy ray-curable group is imported with side chain, make acrylic acid When the compound (A3) of analog copolymer (AP) and energy content line curability group is reacted, the reaction is preferably in organo-metallic catalyst (D) carried out in the presence of.As organo-metallic catalyst (D), particularly preferably using selected from the organic compound containing zirconium, titaniferous At least one in organic compound and stanniferous organic compound.Pass through depositing at such organo-metallic catalyst (D) In lower reaction, the resulting adhesion agent composition containing (methyl) acrylate copolymer (A) can be formed with more excellent viscous Property adhering agent layer, can effectively suppress cutting when chip disperse.Organo-metallic catalyst (D), organises at above-mentioned 3 kinds Among compound, at least one of organic compound of organic compound and titaniferous preferably containing zirconium, particularly preferably containing zirconium Organic compound.

As the example of the form of above-mentioned organic compound, alkoxide compound, chelate, acylate etc. can be included, Wherein preferred chelate.

As organo-metallic catalyst (D) specific example, zirconium alkoxide, zirconium chelate, Titanium alkoxides, titanium chelating can be included Thing, tin alkoxide, tin chelate etc..Wherein, preferably zirconium chelate.Organo-metallic catalyst (D) can be in these catalyst One kind is constituted, and can be also made up of two or more in these catalyst.

In the reaction for obtaining being imported with (methyl) acrylate copolymer (A) of energy ray-curable group in side chain Used in organo-metallic catalyst (D) usage amount, and be not limited.The usage amount should (first relative to 100 mass parts Base) acrylate copolymer (A) solid constituent, it is especially excellent to be converted into metal gauge, preferably 0.001~10 mass parts Elect 0.01~5 mass parts, more preferably 0.05~3 mass parts as.In addition, in the present invention, it is so-called " to be converted into metal Amount ", refer in organo-metallic catalyst (D), remove equivalent to the structure being made up of organic matter molecular weight quality, only with Addition or adding proportion that the Mass Calculation of metal goes out.

(5) other compositions

The adhesion agent composition of adhering agent layer in the present embodiment is formed, in addition to mentioned component, can also be contained The various additions such as the coloured materials such as Photoepolymerizationinitiater initiater, crosslinking accelerator, dyestuff or pigment, fire retardant, filler, antistatic additive Agent.

As Photoepolymerizationinitiater initiater, can include aroma compounds of resting in peace, acetophenone compound, acylphosphine oxide compound, Sensitising agents such as the light triggers such as cyclopentadiene titanium compound, thioxanthone compounds, peroxide compound, amine or quinone etc..Specifically, can example Show Alpha-hydroxy cyclohexyl benzophenone, styrax, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzyldiphenyl thioether, Tetra methylthiuram list sulfide, azodiisobutyronitrile, bibenzyl, biacetyl, β-chloroanthraquinone, 2,4,6- trimethylbenzoyls two Phenyl phosphine oxide etc..During using ultraviolet as energy line, by adding Photoepolymerizationinitiater initiater, irradiation time and irradiation can be reduced Amount.

, also can be according to the friendship when adhesion agent composition of the adhering agent layer formed in present embodiment contains crosslinking agent (C) Join species of agent (C) etc., contain appropriate crosslinking accelerator.

(6) irradiation of energy line

In the glass-cutting adhesive sheet of present embodiment, adhering agent layer is formed by the sticker of energy ray-curable When, as the energy line for solidifying the sticker, free radiation, i.e. ultraviolet, electron beam, X-ray etc. can be included. Wherein, preferably it is easier to import the ultraviolet of irradiation apparatus.

During using ultraviolet as free radiation, from the aspect of operational ease, it is 200 to preferably use comprising wavelength The near ultraviolet ray of~380nm or so ultraviolet., can be according to energy ray-curable contained in adhesion agent composition as light quantity The species of composition and the thickness of adhering agent layer and suitably select, usually 50~500mJ/cm²Left and right, preferably 100~ 450mJ/cm², more preferably 200~400mJ/cm².In addition, ultraviolet illumination is usually 50~500mW/cm²Left and right, be preferably 100~450mW/cm², more preferably 200~400mW/cm².To ultraviolet source, there is no particular restriction, and such as high-pressure mercury can be used Lamp, metal halide lamp, UV-LED etc..

During using electron beam as free radiation, on its accelerating potential, according to energy contained in adhesion agent composition Measure the species of line curability composition and the thickness of adhering agent layer is suitably selected, usual accelerating potential is preferably 10~1000kV Left and right.As long as in addition, illuminated line amount is set as the scope that sticker is properly cured, the generally model in 10~1000krad Enclose selected.As electron beam source, there is no particular restriction, and such as cock Luo Fu-Wa Erdun (Cockcroft-Walton) can be used Type, Fan get Ge pressgangs (Van de Graaff) type, resonance transformer type, insulated core transformer type, or linear pattern, that rice (Dynamitron) the various electron-beam accelerators such as type, high-frequency type.

3. stripping film

In the glass-cutting adhesive sheet of present embodiment, during before pasting adherend, to protect adhering agent layer In side opposite with base material face for the purpose of, also can the surface layer fold stripping film.The structure of stripping film is any, and can illustrate to mould Expect that film carries out the structure of lift-off processing using remover etc..As the specific example of plastic foil, it can include poly- to benzene two The polyester films such as formic acid glycol ester, polybutylene terephthalate (PBT), PEN and polypropylene or polyethylene Deng polyolefin film.As remover, silicone remover, fluorine class remover, chain alkyl class remover etc. can be used.Wherein, It is preferred that cheap and the silicone remover of stability can be obtained.The thickness of stripping film, there is no particular restriction, but usually 20~ 250 μm or so.

4. the physical property of glass-cutting adhesive sheet

The face of the side opposite with base material of adhering agent layer is pasted onto on alkali-free glass, after standing 20 minutes, this reality Adhesion strength of the glass-cutting adhesive sheet to the alkali-free glass of mode is applied, preferably 8000~25000mN/25mm is especially excellent Elect 9000~22000mN/25mm, more preferably 10000~19000mN/25mm as.By making the adhesion strength in above-mentioned model Enclose, glass plate and chip glass can be maintained in cutting on adhesive sheet better.Fly as a result, effectively suppressing chip Dissipate.In addition, by the way that glass plate and chip glass are maintained on adhesive sheet better, glass plate can be suppressed and chip glass exists It is shifted on adhesive sheet, so as to become not allowing to be also easy to produce chip skew and collapse broken.In addition, in this manual, in sticker Layer is by above-mentioned energy ray-curable sticker when being formed, and above-mentioned adhesion strength is the value that is determined before irradiation energy line.

When adhering agent layer is formed by the sticker of above-mentioned energy ray-curable, by the side opposite with base material of adhering agent layer Face is pasted onto on alkali-free glass, after to the adhering agent layer irradiation energy line, the glass-cutting adhesive sheet of present embodiment To the adhesion strength of alkali-free glass, preferably 50~250mN/25mm, particularly preferably 60~160mN/25mm are more preferably 70~130mN/25mm.By making the adhesion strength after irradiation energy line in more than 50mN/25mm, it can suppress from adhesive sheet Pick up the stage before chip glass, chip glass is unexpectedly peeled off or offset from adhesive sheet, can be picked up better.Separately On the one hand, such as, can when picking up chip glass respectively by making the adhesion strength after irradiation energy line in below 250mN/25mm Pickup chip glass is without breakage well, and can suppress to produce cull.

In addition, the adhesion strength in this specification, as using alkali-free glass as adherend, using according to JIS Z0237： The adhesion strength (mN/25mm) that 2009 180 ° of stripping methods are determined, shown in the test example of the details of assay method as be described hereinafter.

5. the manufacture method of glass-cutting adhesive sheet

The manufacture method of glass-cutting adhesive sheet, as long as the adhering agent layer that will can be formed by the adhesion agent composition The one side of base material is layered in, then is not particularly limited.

As an example of the manufacture method of glass-cutting adhesive sheet, first, prepare containing sticker combination Thing and the solvent or the coating composition of decentralized medium further contained according to expectation.Then, by the coating composition, In the one side of base material, applied using die coater, curtain coater, flush coater, slit coater, knife type coater etc. Cloth, forms film.In addition, by making the dried coating film, adhering agent layer can be formed.Coating composition, as long as can be coated, Its character is not particularly limited.Composition for forming adhering agent layer, can be included in coating composition as solute, or Also it can be included in as dispersate in coating composition.

When coating composition contains crosslinking agent (C), in order to there is density formation cross-linked structure with desired, it can change The condition (temperature, time etc.) of above-mentioned drying, or heating can be also set in addition., can in order to fully carry out cross-linking reaction Be laminated by the above method on base material after adhering agent layer, by resulting glass-cutting adhesive sheet, for example 23 DEG C, Relative humidity is in 50% environment, standing is cured for 1 week to 2 weeks or so.

As the other examples of the manufacture method of glass-cutting adhesive sheet, first, in the stripping of stripping film as described above From coating composition is coated with process face, film is formed.Then, make the dried coating film, formed by adhering agent layer and stripping film The layered product constituted.Further, the face of the side opposite with stripping film of the adhering agent layer of the layered product is pasted onto on base material.It is logical The method for crossing the above, can obtain the layered product of glass-cutting adhesive sheet and stripping film.Stripping film in the layered product, can conduct Engineering material is peeled off, also can be during being pasted on before adherend, for protecting adhering agent layer.

6. the application method of glass-cutting adhesive sheet

The glass-cutting of present embodiment can be used for the cutting of glass plate with adhesive sheet.In addition, the glass of present embodiment Adhesive sheet for use in cutting, it can also be used to a series of process of cutting including glass plate and its follow-up pickup.

When being used in the series of processes including cutting and its follow-up pickup, originally, the glass of present embodiment is cut Paste on a glass in the face (hereinafter sometimes referred to " bonding plane ") for cutting the side opposite with base material of the adhering agent layer with adhesive sheet. When bonding plane is laminated with stripping film, the stripping film is peeled off, glass plate is pasted to the bonding plane exposed.On the other hand, bonding plane Peripheral part be pasted onto referred to as ring frame the ring-type for being used to convey or fix device fixture.In addition, from paste glass Plate preferably stands 10 minutes~120 minutes to during implementing before cutting action then, particularly preferably stand 15 minutes~ 60 minutes, further preferably stand 20 minutes~40 minutes.By standing the period, the closely sealed of glass plate and adhesive sheet can be made Property is abundant.

Then, cutting action is implemented.That is, the glass plate that will be pasted on glass-cutting adhesive sheet, uses cutting blade Cut.Thus, obtain being pasted onto multiple chip glasses on glass-cutting adhesive sheet.Cut in the glass of present embodiment Cut with adhesive sheet, it is therefore, excellent to become viscosity because the thickness of adhering agent layer is thicker as described above.Thus, can be by glass Chip is held in adhesive sheet well, can suppress generation chip and disperse.In addition, except the thickness due to adhering agent layer, and make Chip glass is held in beyond adhesive sheet well, and the thickness by making base material can suppress to collapse broken and chip inclined in above range Move.

When adhering agent layer is formed by the sticker of above-mentioned energy ray-curable, after end cutting action, to being pasted with The adhesive sheet of multiple chip glasses, face or the face irradiation energy line of substrate side by chip glass side.Thus, (methyl) propylene is made The energy ray-curable group that acid ester copolymer (A) has carries out polymerisation, reduces adherence, and easily carries out then Pickup process.

Pickup process, can be carried out by the first-class universal means of vacuum clip.Now, to easily pick up, preferably by the glass of object Glass chip is from the face of the side opposite with adhering agent layer of base material, using pushing pin (pin) or syringe needle (needle) etc. is elected.At this In the glass-cutting adhesive sheet of embodiment, the thickness by making base material makes adhesive sheet have well soft in above range It is soft.Furthermore, the thickness by making adhering agent layer turns into the adhesion strength of adhesive sheet and is adapted to picking up for chip glass in above range The size taken.Thus, good pickup can be carried out.In addition, in the glass-cutting adhesive sheet of present embodiment, being picked up Chip glass on be not easy remain the cull from adhering agent layer.Particularly, when adhering agent layer is formed by the sticker of X-type, By making the sticker of X-type be free of low molecular compound as energy ray-curable compound (B), so that the compound will not Remain on chip glass.In addition, the adhesion agent composition of the sticker for forming X-type, is easily uniformly crosslinked.It is comprehensive It is upper described, it can effectively suppress to produce cull.

Furthermore it is preferred that carrying out expansion process before pickup process.Now, glass-cutting adhesive sheet is made to in-plane Elongation.Thus, expand the interval between chip glass, and become to easily pick up.The degree of elongation, as long as between considering preferably Every the suitable setting such as, tensile strength of base material.In addition, expansion process, can also be carried out before irradiation energy line.

In addition, using the glass-cutting of present embodiment with adhesive sheet cutting glass plate when, resulting chip glass The area of plane, preferably 1 × 10^-6mm²~1mm², more preferably 1 × 10^-4mm²~0.25mm², particularly preferably 2.5 × 10^-3mm²~0.09mm², more preferably 0.01mm²~0.03mm².According to the glass-cutting adhesive sheet of present embodiment, by It is thicker in the thickness ratio of adhering agent layer, and good viscosity can be played, therefore, even the area with above range is small Chip glass, can also suppress chip and disperse, collapse the skew of broken and chip.

Using the glass-cutting of present embodiment with adhesive sheet come cutting glass plate when, be used as the thickness of the glass plate of workpiece Degree, preferably 50~10000 μm, more preferably particularly preferably 100~5000 μm, 300~800 μm.In addition, in this theory In bright book, so-called " workpiece " refers to the adherend of glass-cutting adhesive sheet for being pasted with present embodiment, or use the adhesion The machined object of piece processing.According to the glass-cutting adhesive sheet of present embodiment, because the thickness ratio of adhering agent layer is thicker, and Good viscosity can be played, therefore, even thickness is 50 μm of thin glass plate, can also suppress to collapse broken and cut.

The implementation described above in order to be readily appreciated that the present invention and be described, be not intended to limit the present invention and by Record.Therefore, each key element disclosed in above-mentioned embodiment, also to include the whole design changes for the technical scope for belonging to the present invention Purport more or including equivalent.

For example, between the base material and adhering agent layer of glass-cutting adhesive sheet, can also intervene other layers.

Embodiment

Hereinafter, the present invention is further illustrated using embodiment etc., but the scope of the present invention is not limited to this A little embodiments etc..In addition, the record of the mass parts in following, is described in the way of the value for being converted into solid constituent.

[embodiment 1]

(1) preparation of (methyl) acrylate copolymer (A)

Make the third of the 2-EHA of 75 mass parts and the methyl methacrylate of 10 mass parts and 15 mass parts Olefin(e) acid 2- hydroxy methacrylate copolymerization, obtains acrylic copolymer (AP).Point of acrylic copolymer (AP) obtained by determining The result of son amount, weight average molecular weight (Mw) is 700,000.In addition, the weight average molecular weight (Mw) in the present embodiment, to be oozed using gel Saturating chromatogram (GPC) determines the weight average molecular weight for being converted into polystyrene standard of (GPC measure).

Then, resulting acrylic copolymer (AP) and the compound as energy content line curability group are made (A3) 2- methylacryoyloxyethyls isocyanates (MOI), in the zirconium chelate catalyst as organo-metallic catalyst (D) Reacted in the presence of (Matsumoto Fine Chemical companies manufacture, trade name " ZC-700 ").Thus, obtain in side Chain is imported with (methyl) acrylate copolymer (A) of energy ray-curable group (methylacryloyl).Now, acrylic acid is made Every 100 molar equivalent of acrylic acid 2- hydroxy methacrylate units of analog copolymer (AP), MOI turns into the side of 60 moles (60 moles of %) Formula, reacts the two.In addition, the addition of organo-metallic catalyst (D), relative to the acrylic copolymer of 100 mass parts (AP) it is 0.1 mass parts.

(2) preparation of adhesion agent composition

By (methyl) acrylate copolymer (A) obtained by the above-mentioned operation (1) of 100 mass parts, 3.0 mass parts It is used as the Alpha-hydroxy cyclohexyl benzophenone (BASF AG manufactures, trade name " IRGACURE 184 ") and 0.2 of Photoepolymerizationinitiater initiater Mass parts as crosslinking agent (C) trimethylolpropane modified toluene diisocyanate (TOSOH CORPORATION manufacture, Trade name " CORONATE L ") mix in a solvent, obtain the coating solution of adhesion agent composition.In addition, by using this Adhesion agent composition, obtains the sticker of X-type.

(3) making of glass-cutting adhesive sheet

By the coating solution of adhesion agent composition resulting in above-mentioned operation (2), in polyethylene terephthalate The one side of film through silicone remover lift-off processing stripping film (LINTEC company systems, article number " SP-PET381031 ", 38 μm of Hou Du ︰) lift-off processing face on, be coated using die coater.Then, handled 1 minute with 100 DEG C, make film Cross-linking reaction is carried out while drying.Thus, the layered product being made up of stripping film and thickness 10 μm of adhering agent layer is obtained. In addition, the face of the adhering agent layer side to the layered product, pastes polyethylene terephthalate (PET) film as base material (TOYOBO CO., LTD. manufactures, trade name " A-4100 ", 100 μm of Hou Du ︰).Thus, obtain being sequentially laminated with base material, glue The glass-cutting adhesive sheet of oxidant layer and stripping film.

[embodiment 2~12]

The material of base material, the thickness of base material, the 2- methylacryoyloxyethyls for forming adhering agent layer and using is different The amount of cyanate (MOI), for the species of organo-metallic catalyst (D) that forms adhering agent layer and use and adhering agent layer Beyond thickness is changed to shown in table 1, glass-cutting adhesive sheet is manufactured in the same manner as example 1.

[comparative example 1~3]

Except by the thickness of base material, for the species of organo-metallic catalyst (D) that forms adhering agent layer and use and viscous Oxidant layer thickness be changed to shown in table 1 beyond, similarly to Example 1, manufacture glass-cutting adhesive sheet.

[comparative example 4]

In addition to being changed to the thickness of adhering agent layer shown in table 1, similarly to Example 12, manufacture glass-cutting is used Adhesive sheet.

The detailed content of dummy suffix notation described in table 1 is as follows.

[material of base material]

PET (100 μm of thickness)：Polyethylene terephthalate film (TOYOBO CO., LTD. manufactures, trade name " A- 4100”)

PET (50 μm of thickness)：Polyethylene terephthalate film (TOYOBO CO., LTD. manufactures, trade name " A- 4100”)

PET (188 μm of thickness)：Polyethylene terephthalate film (TOYOBO CO., LTD. manufactures, trade name " A- 4100”)

PO：Polyolefin film (Rikentechnos companies manufacture, trade name " ADN09-100T-M8 ")

PP：Polypropylene screen (DiaPlus Film companies manufacture, trade name " PL109 ")

PI：Polyimide film (MPRTECH companies manufacture, trade name " MordoharPIF100 ")

[organo-metallic catalyst]

Zr ︰ zirconium chelates catalyst (Matsumoto Fine Chemical companies manufacture, trade name " ZC-700 ")

Sn：The fourth tin catalyst of laurate two (TOYOCHEM companies manufacture, " BXX-3778 ")

[test example 1] (measure of the storage modulus of base material)

On the base material used in embodiment and comparative example, the energy storage mould at 23 DEG C is determined with following apparatus and condition Amount.Show the result in table 1.

Determine dress and put ︰ dynamic moduluss of elasticity measure device, the manufacture of TA Instrument companies, trade name " DMA Q800”

0 DEG C of on-test Wen Du ︰

200 DEG C of off-test Wen Du ︰

Rise 3 DEG C/min of Wen Sudu ︰

Pin Shuai ︰ 11Hz

20 μm of Zhen Fu ︰

[test example 2] (measure of the storage modulus of the adhering agent layer before irradiation ultraviolet radiation)

By the coating solution of the adhesion agent composition used in embodiment and comparative example, be coated on thickness for 38 μm the On the lift-off processing face of one stripping film (LINTEC companies manufacture, trade name " SP-PET381031 ").By resulting film, Kept for 1 minute at 100 DEG C, make dried coating film.Thus, the adhering agent layer that thickness is 40 μm is formed on the first stripping film.This Outside, by the face of the side opposite with the first stripping film of the adhering agent layer, being pasted on the second stripping film that thickness is 38 μm, (LINTEC is public Department manufacture, trade name " SP-PET381031 ") lift-off processing face, obtain being sequentially laminated with the first stripping film, be with thickness The layered product of 40 μm of adhering agent layer and the second stripping film.The step of by by the above it is resulting adhering agent layer stacking it is many Layer to thickness is 800 μm.A diameter of 10mm circle is gone out by the layered product that the thickness is 800 μm, the examination for measure is used as Material.By determination of viscoelasticity device (TA Instrument companies manufacture, trade name " ARES "), frequency 1Hz is assigned to sample Deformation, determine -50~150 DEG C of storage modulus, obtain the value of the storage modulus at 23 DEG C and 100 DEG C.Show the result in Table 1.In addition, during laminated multi-layer adhering agent layer, using after adhering agent layer is formed, in the environment of 23 DEG C of temperature, humidity 50% The layered product placed 1 week is used as above-mentioned layered product.

[test example 3] (measure of the tensile modulus of elasticity of the adhering agent layer after ultraviolet irradiation)

With the step same with test example 2, laminated multi-layer adhering agent layer so that thickness is 200 μm.

Then, ultraviolet is carried out using ultraviolet lamp (LINTEC companies manufacture, trade name " RAD-2000 ") (UV) (illumination is irradiated：230mW/cm², light quantity：190mJ/cm²), solidify adhering agent layer.Further, be cut into 15mm × 140mm, obtains test film.

Stripping film is peeled off from resulting test film, on the adhering agent layer after solidification, according to JIS K7161： 1994 and JIS K7127：1999, determine the tensile modulus of elasticity at 23 DEG C.Specifically, cupping machine (Shimadzu is utilized Make manufactured, and trade name " Autograph AG-IS500N "), fixture spacing is set as after 100mm, with 200mm/ The speed of minute carries out tension test, determines tensile modulus of elasticity (Pa).Show the result in table 1.

[test example 4] (measure of viscosity value)

For the face of the adhering agent layer side of adhesive sheet manufactured in embodiment and comparative example, a diameter of 5mm (5mm are used Probe Φ), viscosity value is determined using tack meter of popping one's head in (Rhesca companies manufacture, trade name " RPT-100 ").Determine Method is, in JIS Z0237：In method described in 2009, peeling rate is changed to 1mm/ minutes, on the other hand, loading For 100gf/cm², time of contact is 1 second, is measured according to described in above-mentioned JIS regulation.Obtain determined energy (crest integrating value), regard this as the mono- Wei ︰ mJ/5mm Φ of viscosity value ().Show the result in table 1.In addition, for said determination, making Used in being formed after adhering agent layer, in 23 DEG C of temperature, the environment of humidity 50% places the adhesive sheet of 1 week.

[test example 5] (measure of the adhesion strength after ultraviolet pre-irradiation)

At room temperature, from embodiment and comparative example it is manufactured, in the environment of 23 DEG C of temperature, humidity 50% place 1 The glass-cutting in week is with peeling off stripping film on adhesive sheet.By the one of the face for exposing adhering agent layer and 6 inches of alkali-free glass plate Surface layer fold, by make 2kg roller make a round trip application loading and fit, place 20 minutes.Afterwards, according to JIS Z0237：2009 180 ° of stripping methods, from alkali-free glass plate, with peeling rate 300mm/ minutes, 180 ° of peel angle, peel off glass-cutting and use Adhesive sheet, determines adhesion strength (mN/25mm).Adhesion strength before using the measured value as irradiation ultraviolet radiation.Show the result in table 1。

In addition, as described above, by the glass-cutting adhesive sheet manufactured by embodiment and comparative example and 6 inches of alkali-frees Glass plate is bonded, and after placing 20 minutes, from the substrate side of glass-cutting adhesive sheet, uses ultraviolet lamp (LINTEC companies manufacture, trade name " RAD-2000 "), carries out ultraviolet (UV) irradiation (photograph degree ︰ 200mW/cm², Guang Liang ︰ 180mJ/cm²), solidify adhering agent layer.Afterwards, adhesion strength (mN/25mm) is determined in the same manner as described above.This is determined Value is used as the adhesion strength after irradiation ultraviolet radiation.Show the result in table 1.

[test example 6] (chip disperses, collapses the evaluation that broken and chip is offset)

Glass that is manufactured from embodiment and comparative example, being placed 1 week in the environment of 23 DEG C of temperature, humidity 50% is cut Cut with adhesive sheet, stripping film is peeled off, (LINTEC companies manufacture, trade name " Adwill RAD2500m/ using Belt sticking machine 12 "), in the exposed surface of adhering agent layer, 6 inches of alkali-free glass plates and cutting ring frame that thickness is 550 μm are pasted.Then, With the external diameter of ring frame matchingly severing glass-cutting adhesive sheet.Further, using cutter device (DISCO companies manufacture, Trade name " DFD-651 "), the cutting cut off with following cutting condition from glass plate side obtains the glass of 0.6mm square Chip.

Cutting dress puts ︰ DISCO companies manufacture DFD-651

Knife piece ︰ DISCO companies manufacture NBC-2H 2050 27HECC

0.025~0.030mm of Dao Pian Kuan ︰

0.640~0.760mm of Jin Dao Liang ︰

Dao piece Zhuan Su ︰ 30000rpm

Cut Su Du ︰ 80mm/sec

20 μm of base material incision Shen Du ︰

Cutting water Liang ︰ 1.0L/ minutes

20 DEG C of cutting water Wen ︰

Cutting ruler Cun ︰ 0.6mm square (the area 0.36mm of plane²)

Visually observation pass through cutting action obtained by the adhesive sheet for being attached with chip glass, count in cutting step from The number of the chip glass come off on adhesive sheet, by the segmentation number in the number divided by cutting action, tries to achieve chip and disperses rate (singly Wei ︰ %).Based on the result of calculation, on the basis of following, evaluate chip and disperse.Evaluation result is shown in table 1.

◎：Chip disperses rate less than 0.1%.

○：Chip disperses rate for 0.1% less than 5%.

△：Chip disperses rate for 5% less than 10%.

×：Chip disperses rate for more than 10%.

To central part after above-mentioned cutting, positioned at glass-cutting adhesive sheet and its neighbouring chip glass, end is observed There are N/D and shape in portion.Specifically, using electron microscope, (KEYENCE companies manufacture, trade name " VHZ-100 ", again 300 times of Shuai ︰), observe the sides of 50 chips of flow direction (MD directions) in the manufacture of base material and orthogonal with MD directions The side of 50 chips in direction (CD directions).Then, it will be judged to collapsing broken, number with 20 μm more than of width or the defect of depth Its quantity.By the result, on the basis of following, evaluation is collapsed broken.Evaluation result is shown in table 1.

◎：The quantity for collapsing broken chip is produced less than 5.

○：Produce and collapse the quantity of broken chip for 5 less than 50.

×：Produce and collapse the quantity of broken chip for more than 50.

Furthermore, on by all chip glasses obtained by above-mentioned cutting, determining 4 edge lengths under vertical view, meter The difference of its maxima and minima of number is the number of more than 10% chip (hereinafter sometimes referred to " NG chips ") of maximum.Will The result, on the basis of following, evaluates chip skew.Evaluation result is shown in table 1.

◎：The quantity of NG chips is less than 50.

○：The quantity of NG chips is 50 less than 500.

×：The quantity of NG chips is more than 500.

[test example 7] (evaluation of pickup)

On glass-cutting adhesive sheet after being cut from test example 6,100 chip glasses are picked up.Now, from glass The face of the opposite side in the face with being pasted with chip glass of glass adhesive sheet for use in cutting, (syringe needle number is elected with syringe needle:4, push away Lift speed:0.3mm/ seconds, election height:1.5mm).On the chip glass obtained by pickup, the chip glass for having breakage is counted Number (NG numbers), according to following benchmark, evaluate pickup.As a result it is shown in table 1.

◎：There is no chip glass damaged.

○：There is 1~2 chip glass breakage.

×：There is the chip glass of more than 3 damaged.

[test example 8] (evaluation of cull)

On 5000 chip glasses picked up by the method shown in test example 7, electron microscope is used (KEYENCE companies manufacture, name of product " VHZ-100 ", 300 times of times rate ︰), observation is whether there is from glass-cutting adhesive sheet The attachment of the sticker of adhering agent layer.The quantity for the chip glass for being attached with the sticker that Breadth Maximum is more than 30 μm is counted, With following benchmark evaluation cull.

◎：The quantity for being attached with the chip glass of sticker is less than 50.

○ ︰ are attached with the quantity of the chip glass of sticker for 50 less than 500.

×：The quantity of the chip glass of sticker is attached with for more than 500.

As shown in Table 1, according to the adhesive sheet on embodiment, generation chip can be suppressed and disperse, collapse broken, chip skew and residual Glue, and can pick up well.

Industrial applicibility

The glass-cutting adhesive sheet of the present invention, available for the cutting action of glass, especially can be applied to thin glass Cutting action.

Claims

1. a kind of glass-cutting adhesive sheet, it possesses：Base material and be laminated in the base material at least one side adhering agent layer, It is characterized in that：

The thickness of the base material be 30 μm less than 130 μm,

The thickness of the adhering agent layer is more than 9 μm and for less than 40 μm.

2. glass-cutting adhesive sheet according to claim 1, it is characterised in that the adhering agent layer is by energy line curing The sticker of property is formed.

3. glass-cutting adhesive sheet according to claim 2, it is characterised in that the adhering agent layer is combined by sticker Sticker that thing is formed and formed, the adhesion agent composition contains (methyl) that side chain is imported with energy ray-curable group Acrylate copolymer (A).

4. glass-cutting adhesive sheet according to claim 1, it is characterised in that the adhering agent layer, pass through JIS Z0237：Peeling rate is changed to the condition of 1mm/ minutes, the energy using probe viscosity measure in method described in 1991 For 0.01~5mJ/5mm Φ.

5. glass-cutting adhesive sheet according to claim 1, it is characterised in that storage of the adhering agent layer at 23 DEG C Energy modulus is 30~100kPa.

6. glass-cutting adhesive sheet according to claim 1, it is characterised in that by the adhering agent layer and the base The face of the opposite side of material is pasted on alkali-free glass, and after standing 20 minutes, the glass-cutting adhesive sheet is to the alkali-free glass The adhesion strength of glass is 8000~25000mN/25mm.

7. glass-cutting adhesive sheet according to claim 2, it is characterised in that by the adhering agent layer and the base The face of the opposite side of material is pasted on alkali-free glass, after to the adhering agent layer irradiation energy line, the glass-cutting adhesive sheet Adhesion strength to the alkali-free glass is 50~250mN/25mm.

8. glass-cutting adhesive sheet according to claim 2, it is characterised in that the adhering agent layer is in irradiation energy line Afterwards, the tensile modulus of elasticity at 23 DEG C is 15~1500MPa.

9. glass-cutting adhesive sheet according to claim 1, it is characterised in that energy storage mould of the base material at 23 DEG C Measure as 100~8000MPa.

10. glass-cutting adhesive sheet according to claim 3, it is characterised in that the adhesion agent composition is further Contain crosslinking agent (C).

11. glass-cutting adhesive sheet according to claim 1, it is characterised in that the glass-cutting is used for adhesive sheet Glass plate is cut into plane with 1 × 10^-6mm²~1mm²Area chip glass.

12. a kind of manufacture method of glass-cutting adhesive sheet, it is the glass-cutting adhesive sheet described in manufacturing claims 3 Method, it is characterised in that including：

Make the monomer (A2) containing functional group at least by (methyl) alkyl acrylate monomer (A1) and with reactive functional groups The acrylic copolymer (AP) of copolymerization,

With with functional group that can be with the functional group reactionses of the monomer (A2) containing functional group and the carbon-to-carbon of energy ray-curable Compound (A3) reaction of the energy content line curability group of double bond, preparation is imported with energy ray-curable group in side chain The process of (methyl) acrylate copolymer (A)；And

Using the adhesion agent composition containing (methyl) acrylate copolymer (A), adhesion is laminated at least one side of base material The process of oxidant layer.

13. the manufacture method of glass-cutting adhesive sheet according to claim 12, it is characterised in that selected from containing zirconium At least one of organic compound, the organic compound of titaniferous and stanniferous organic compound organo-metallic catalyst (D) In the presence of, carry out the acrylic copolymer (AP) and the reaction of the compound (A3) of the energy content line curability group.