TW201211425A - Pressure-sensitive adhesive sealing - Google Patents

Abstract

This invention concerns a bridge or frame shape sealing with a foam body, a first adhesive planned on the top side of the foam body as well as a second adhesive planned on the bottom side of the foam body, characterized by the fact that the bridge width of the sealing in its narrowest place does not more than 1.5mm, the foam body has a maximum thickness of 400 μ m and from one or more closed-porous foams with a mass density in the range of 100 to 400 kg/m<SP>3</SP>, whereby the first adhesive has a sticking strength on polymethylmethacrylate (PMMA) of at least 3 N/cm, measured according to ASTM-D 3330 method C, whereby the second adhesive has a sticking strength on acrylnitril butadiene styrol copolymer(ABS) of at least 1.5 N/cm, measured according to ASTM-D 3330 method C. The invention contains further a method for sealing joints between or of openings in construction units made of metal, glass and/or plastic by means of the before mentioned sealing, whereby their upsetting does not more than 25 ± 1%, prefer no more than 10% of their thickness in free state (thus does not stick together).

Description

201211425 VI. Description of the Invention: [Technical Field of the Invention] The present invention is a double-sided pressure-sensitive adhesive seal having different adhesive properties, a method of manufacturing the same, and a sealing application. [Prior Art] on portable electronic products There are many seals in the article. The purpose of installing the seal is to prevent dust, dirt, or moisture from penetrating into the equipment. Especially bet: electronic supplies are more... because such equipment is often outdoors: with extra openings, such as for transmitting whistling: "The phone is also </ br> &; 曰 的 ( ( ( ( ( ( ( ( ( ( Portable electronic products are usually made of a bead material; for example, a polyurethane foam bed material is: Some types of foam materials have a partial open and partial ^ &amp; structure, for example, commercially available &amp;; Early 7L knot W Phosphorus R〇gerS P的r〇nTM products. In order to achieve perfect sealing performance 'should be' some foam materials. Some seals are viscous on one side, to avoid "The position is slipping. The seal within the sealed seam is subjected to a sealing effect. After (4), the foam unit will be infiltrated by dust and moisture. Thus, for example, when the display window in the housing is adhered, the sealing seam is closed. In order to achieve the sealing effect, the protective seal of the field will be sealed to the outer frame of the outer casing to seal the foam material. The pressure absorption and impact absorption energy of the unit pressure material also changes: the material has been thinned to achieve the sealing function. The goal is that the material will become thinner and shorter, and the current trend will be that the volume of the stabilized electronic product becomes shorter and shorter. The area used and the height of the layer are also small. The existing system can no longer meet this requirement. In addition, the cost pressure on the manufacturing process is increasing. However, the common polyamine-based system is relatively expensive to manufacture. The formic acid brewing system is also greatly compressed to achieve good sealing performance. However, under the light trend, there is not enough space for compression. In addition, another obvious trend in the electronics industry is that the resource can be returned = The residuals are disassembled and removed to facilitate the classification to enable the repair process. This is a special requirement for the bead material. [Summary] It is therefore necessary to propose a pressure-sensitive adhesive seal that does not have the above-mentioned pressure. To achieve the above object, the present invention is sealed, and the seal has a bead body, a tab-shaped or frame-shaped first-adhesive, and a coating on the top of the foam bead. The width of the web in which the seal is sealed at the narrowest point is not more than 15; the maximum thickness of the adhesive is 400 pm, and it is a closed porous space between the coating body and the k-th. The density of the first adhesive on the surface of the poly-adhesive (ΡΜΜΑ) is at least 3 ^ soil methyl acrylate agent measured by ASTM-D 3330, and the second is measured according to ASTM-D 333. / coffee (4) strong point of the dilute - styrene copolymer (ABS) ... Ding N / cm (adhesive weak adhesive). The force is the most 1 5 201211425 according to ASTM-D 3330 measured first The adhesion of the adhesive to the surface of the polyacrylic acid methacrylate (PMMA) is preferably at least 5 〇 N/cm, more preferably at least 7 _ 5 N/cm, or most preferably greater than 9 5 N/cm. The adhesive strength of the second adhesive on the ABS surface is preferably 1.0 N/cm or less as measured according to ASTM-D 3330. The contents of the subsidiary patent application of the present invention include advantageous improvements and manufacturing and application of pressure sensitive Adhesive sealing method. Unless otherwise stated, the adhesion mentioned in this specification is based on ASTM d 33 published on January 1st, 2004. 30/D 3330M-04 Method C (AdheSi〇n of Double_c〇ated Tape; Abschniu 13) This method is abbreviated as "astm_d method c". The measuring method used in the present invention is different from the enthalpy of the specification in point 6.2. The board (measuring substrate) used is not a steel sheet but is made of the following materials (all the values mentioned are measured substrates) The polyethyl methacrylate used is a colorless PMMA XT with a thickness of 3 mm. This material is made by extrusion. The ABS sheet is extruded from molten ABS pellets, wherein the composition of the ABs particles is 50% by weight of styrene, 3% by weight of acrylonitrile (% by weight) and 20% by weight of butadiene. The ABS plate has a thickness of 3 mm °. The glass used is a 3 mm thick sodium oxide lime glass. The composition of the glass is 75.5% of cerium oxide, 129 of sodium oxide, and 116% of calcium oxide. The surfaces of these three materials are smooth (glossy), scratch-free, unprocessed, and cleaned. The three measurement substrates all conform to the surface roughness values mentioned in point 6.3 of ASTM D 33 30/D 3330M-04. 201211425 The seal of the present invention is generally such that the test piece for strength should conform to the same layer structure as the seal of the present invention. The size of the test piece may be larger than the size of the shield or the unclear. The larger layer is punched out. Measure the size specified in the viscosity specification, and should have the seal of the seal material so measured. This is less likely to have a spear. If the method is ASTM_D 333, method c (the angle of the twist is 18 degrees), the first adhesive and the bubble are measured. The anchoring force between the swimming bodies and the second adhesive: the anchoring force between the foaming bodies are greater than the adhesive force of the second adhesive on the AM' is a great advantage for the present invention. After the above measurement, if the adhesion of the first and second adhesives on the bead body is found to be unsuccessful, that is, before the connection of the second adhesive on the ABS surface has not been released, the adhesive layer is not Disengagement from the foam is considered to be if the above conditions are met. As long as the above conditions are met, it is ensured that the seal does not crack when the seal is separated from the outer casing (especially in the case of ABS or an outer casing whose surface characteristics are similar to those of ABC). An advantageous case is the anchoring force between the first adhesive and the foam and the anchor between the second adhesive and the foam measured by ASTM_D 333 〇 method c (with a tear angle of 18 〇) In the constant force, at least one anchoring force is at least 2% higher than the adhesion on the second adhesive 纟ABS. Second, the advantage is that both anchoring forces meet this condition. The double-sided pressure-sensitive adhesive seal of the present invention is well suited for bonding components of consumer electronic products. The adhesion of the adhesives used in such products to PMMA and/or ABS is generally determined by the adhesion of each other. In addition, the method of the present invention can be achieved by using a double-sided glass as a reference adhesive surface. The seal is a tab or a frame: a seal having a foam and a coating on the foam. a first adhesive on the top surface of the body, and a second adhesive coated on the bottom surface of the foam, wherein the width of the tab sealed at the narrowest point thereof is no more than i 5 mm, and the maximum thickness of the foam is 400 μπι' It is composed of one or more closed porous foams having a spatial density of between (9) and kg/m3, wherein the adhesion of the first adhesive on the surface of the glass is at least 5 〇N/cm as measured by astm d 333 ( ( A highly viscous adhesive), according to astm_d 333, the adhesion of the second adhesive on the glass surface is the highest [15 Ν / _ weak adhesive) - a particularly advantageous case is the first adhesive The adhesion of the agent (adhesive strong adhesive) and the second adhesive (adhesive weak adhesive) to pMMA and/or ABS and glass meets the above requirements. ^ is the pressure sensitive adhesive as the first - Adhesive (adhesive adhesive) and / or second adhesive (viscosity) Weak Adhesive Bud First Adhesive (Adhesive Adhesive) The following adhesive system, especially early and/or crushing adhesive system, can be used as the double-sided pressure sensitive adhesive of the present invention. Adhesives: acrylate point agent, natural rubber adhesive, Λ ' „ Μ σ into rubber adhesive, polyoxygenated adhesive back J, £VA adhesive, a special way. The pressure-sensitive adhesive based on the polymer and / oxime copolymer of the above-mentioned adhesive oxime and the oxime-based propylene acrylate derivative is referred to as an acrylate pressure-sensitive adhesive sheet. PlI , , m . a) Depending on the desired adhesive relationship, in principle, other 20121225 adhesives known to those skilled in the art can be used, for example, in ''Handbook of Pressure Sensitive'

Adhesive Technology, Adhesive Technology, D〇natas St at as, van Nostrand, New York 1989). After grinding and adding the additives, the natural rubber used to make the natural rubber adhesive has a molecular weight (weight average) of not less than 1 耳 耳 or preferably not less than 500,000 呑. If rubber/synthetic rubber is used as the raw material for the adhesive, there are many possibilities. For example, natural rubber, and/or synthetic rubber, and/or natural rubber and/or synthetic rubber mixed in any ratio can be used. In principle, various qualities of natural rubber can be used, such as raw rubber, RSS rubber, ADS rubber, TSR. Rubber or CV rubber can be used. As for the natural rubber to be used, depending on the purity and viscosity required, synthetic rubber can be selected from the following types of synthetic rubber and / or any ratio of them: Polymerized styrene butadiene rubber (SBr), butadiene rubber (BR), synthetic polyisoprene (ir), butyl rubber (IIR), halogenated butyl rubber (XIIR), acrylate rubber (ACM) Ethyl vinyl acetate copolymer (EVA), and polyamino phthalate. Further, in order to improve the workability of the thermoplastic elastomer, a rubber equivalent to 10% to 50% by weight based on the weight of the elastomer may be added. For example, styrene methyl butadiene styrene (SIS) and styrene butadiene styrene (S B S) are typical examples. An advantageous embodiment of the invention is the use of an acrylate pressure sensitive adhesive. The acrylate pressure-sensitive adhesive used in the present invention is preferably produced by free radical polymerization. The acrylate pressure-sensitive adhesive preferably contains at least 201211425 50% by weight of a polymer and/or a copolymer [hereinafter generally referred to as a (co)polymer], and these (co)polymers contain the following One or more acrylic monomers of the compound of the formula:

Wherein R^H or CH3; R2=H or CH3, or a branched or unbranched saturated alkyl group having from 1 to 30 hindering atoms. The criterion for selecting a monomer is that the polymer produced by the monomer should be used as a pressure-sensitive adhesive at room temperature or at room temperature, and in particular, the polymer produced by the monomer should have "pressure sensitivity". Pressure-sensitive adhesive properties required by the Adhesive Technical Manual (Donatas Statas, van Nostrand, New Y.ork 1989). This can be met, for example, by selecting the appropriate static glass transition temperature. The static glass transition temperature TG of the pressure sensitive adhesive is preferably not more than 20 °C. The glass transition temperature can be adjusted by selecting the choice of the (co)polymer and/or the addition of a whiskerable glass transition temperature (eg, a resin). In order to provide the (co)polymer with the desired static glass transition. For the temperature TG, the appropriate monomer should be selected according to the above description, and various types of monomer mixtures should be calculated according to the equation F(x1) (see TG· Fox, Bull, Am. Phys. Soc. 1 (i 956) 123). The proportion of the monomer component e -10- 201211425 1 _ r- w_ (G1) where n represents the number of the monomer used, and Wn represents the weight percentage (%) of the monomer of the number n ' TG n represents the number The glass transition temperature (temperature unit: κ) of the ruthenium polymer composed of n monomers. Adding a resin usually increases the static glass transition temperature. By selecting an appropriate static glass transition temperature for the (co)polymer, and selecting the type and amount of resin to be added, it is possible to achieve the desired glass transition temperature of the pressure sensitive adhesive. The static glass transition temperature can be measured using a differential calorimeter (abbreviated DSC) in accordance with DIN 53765:1 994-03. Unless otherwise stated, the glass transition temperature referred to in this specification refers to the extrapolated melting point TgC)E in accordance with Section 2.2.1 of the reading specification. The molecular weight (weight average) Mw of the polyacrylate used is preferably $200,000 g/m〇i. The molecular weight Mw referred to in the specification means a molecular weight measured by a numerical value elimination chromatography (GPC). A very advantageous way is to use acrylates and methacrylic acid S having an alkyl group (having 4 to 14 rabbit atoms) and preferably having 4 to 9 carbon atoms as a monomer. For example, the following monomers (but by no means limited to the use of these monomers): mercapto acrylate, decyl decyl acrylate, hexyl acrylate, n-butyl acrylate, n-butyl methacrylate, n-pentyl acrylate ~, acrylic acid N-heptyl ester, n-octyl acrylate, n-octyl methacrylate, n-decyl sulphate, lauryl acrylate, stearyl acrylate, behenylacryiate, and branched isomers of these monomers , 201211425 For example, isobutyl acrylate, 2-ethyl ethyl acrylate, 2-ethyl ethyl methacrylate, isooctyl acrylate, isooctyl acrylate. Other useful grades of compounds include monofunctional acrylates and/or sulphuric acid esters of bridged cycloalkyl carbons having at least 6 carbon atoms. The cycloalkyl group carbon may also be substituted, for example, by C -1 - 6 - ortho, earth, halogen, or cyano. Specific examples include methacrylic acid X-coated vinegar, isobornyl acrylate, isobornyl methacrylate, and propylene diacetate. An advantageous way to use a monomer with a polar group, such as a belt

There are carboxyl groups, sulfuric acid, phosphoric acid, hydroxyl groups, internal acid amines and lactones, NN substituted decylamines, N-substituted amines, amine phthalate groups, epoxy groups, sulfuric acid sulphur, oxalate, cyano, or _ Monopolar monomer. The following are some examples of moderately salt-based monomers. · N,N-double-formyl-substituted guanamines, such as N,N-dimercaptopropenylamine, nN-dimercapto-methyl| Amine, hydrazine-t-butyl butyl decylamine, hydrazine-vinyl pyrrolidone, hydrazine-ethylene dilute vinegar, monomethylaminoethyl methyl diacetate, dimethylamine ethacrylic acid Esters, diethylaminoethyl methacrylate, diethylaminoethyl acrylate, hydrazine-hydroxymethyl methacrylate decylamine, hydrazine-(butoxy fluorenyl) decyl acrylamide, Ν-hydroxymethyl acrylamide, hydrazine-(ethoxymethyl) propylene@s&amp;amine, hydrazine-isopropyl propylene amine, of course, the precursors actually usable in the present invention are not limited to these examples. . Other examples include hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, allyl alcohol, maleic anhydride, sulfhydryl succinic anhydride, methylene succinic acid, Glycidyl methacrylate, phenoxyethyl acrylate, phenoxyethyl methacrylate, -12- 201211425 2-butoxyethyl methacrylate, 2-butoxyethyl acrylate, methacrylic acid Clattered ethyl ester, cyanoethyl acrylate, glycidyl methacrylate, methyl propylene 6 - light hexanyl, ethyl acetate, tetrahydrogen. Bupropionic acid, (3-acryloxypropionic acid, trichloroacrylic acid, fumaric acid, crotonic acid, aconitic acid, monomethacrylic acid, etc., of course, the monomers which can be practically used in the present invention are not limited to these Further, the monomers used in a highly advantageous embodiment are vinyl esters, vinyl ethers, ethylene, vinylidene halides, vinyl compounds having an aromatic oxime and an aromatic heterocyclic ring at the α position, such as vinyl acetate. Ester, vinyl phthalate, vinyl pyridine, ethyl vinyl ether, ethylene ethylene, ethylene diene, acrylonitrile, etc. Of course, the monomers which can be practically used in the present invention are not limited to these examples. Further, another advantageous implementation The method is to use a photoinitiator with a total of double bonds. N〇rrish_; [type and Norrish-Π photoinitiators are suitable photoinitiators. For example, ucB company (Ebecryl P 3 6) phenyl acrylate produced and an acrylated benzophenone. In principle, all photoinitiators known to the skilled artisan to crosslink the polymer via a free radical mechanism under ultraviolet irradiation are acceptable. It is co-polymerized in Fouassier:. "Photoinitation,

Photopolymerization and Photocuring ·· Fundamentals and

Applications'' (Hanser-Verlag, Munchen 1 995) - All available photoinitiators are listed in the book. Further, there is also a description in this regard in "Chemistry and Technology of UV and EB Formulation for Coating, Inks and Paints, 5 (01dring (Hrsg.), 19 94, SIT A) by Craroyeta 1. et al. Another advantageous embodiment is to add a suitable comonomer to the aforementioned monomers, wherein the homopolymers of the comonomers have a high static glass transition temperature, such as an aromatic vinyl compound ( For example, styrene) is a suitable component in which the aromatic nucleus is preferably composed of 4 to 18 carbon atoms, and may also contain other hetero atoms. Particularly advantageous: the sub-including 4-vinyl pyridine, N-vinyl fluorene Amine, methyl styrene, 3,4-dimethoxy styrene, 4·vinyl benzoic acid, benzyl acrylate vinegar, phenyl fluorenyl acrylate, phenyl acrylate, phenyl fluorenyl Acrylate, butyl butyl acrylate, t-butyl phenyl methacrylate, heart diphenyl acrylate vinegar and 4 - diphenyl methacrylate acrylate, 2 - naphthyl propylene s "曰 and 2- Naphthyl decyl acrylate, and the above monomers Compositions, of course, the present invention can be used practically monomer is not limited to these examples. - In order to obtain stronger adhesion, it is possible to selectively add a resin to the pressure sensitive adhesive. The viscous tree :: and as described in the literature, as the tackifying resin, is preferably a resin which can be uniformly mixed in the base polymer and/or the base polymer. You can use 〇 s c to mix the % sentence to produce a uniform. In the case of incompatibility, the melting peak temperature of the undissolved resin is measured in addition to the static glass transition. Under £ ± t are several examples of resins with good glutenability: pine resin, poly: tree sap, &amp; scented resin, and branching, hydrogenation, poly, and § a derivatives of these resins And salts, aliphatic and aromatic hydrocarbon resins, :: oleoresin and pine resin, c"s resin 'C9 hydrocarbon resin, and other hydrocarbon resins. The above resins or other resins may be used. The resin is mixed in an adhesive, ^, '&quot;, and proportions, and then added to the adhesive to adjust the adhesion of the final tester. As a whole, all of them can be combined with the corresponding polypropylene 14-201211425 enoate. A resin (soluble) can be used, wherein the compatibility of the resin with the polyacrylate is mainly determined by the polarity of the polyacrylate. In addition, a softener (plasticizer) can be selectively added to the pressure sensitive In the adhesive, the softener usually lowers the static glass transition temperature and adhesion. Other possible additives include fillers, beads made of other materials, tannic acid, niobate, crystal bud forming agent, swelling. Agent, compounding agent, and/or aging protective agent ( For example, primary or secondary antioxidants, or photoprotective agents. In addition to static glass transition temperatures (especially less than 20 ° C), the degree of crosslinking is also a decisive factor for adhesion properties, especially for acrylates. For adhesives, in order to achieve the desired pressure-sensitive adhesive, the gel value of the pressure-sensitive adhesive is preferably between 3% and 70% (see Gel Value Determination). Excessive cross-linking leads to Reduced adhesion, insufficient cross-linking leads to agglomeration and cleavage. In principle, cross-linking of pressure-sensitive adhesives can be initiated by energy radiation (electron beam and/or ultraviolet radiation), or through thermal energy (incorporation of heat and/or appropriate heat) Crosslinking) initiates cross-linking of pressure-sensitive adhesives. In order to achieve the desired range of gel values, crosslinkers and promoters can be added, such as difunctional or polyfunctional acrylates, difunctional or polyfunctional isocyanates (including Blocked isocyanates, difunctional or polyfunctional epoxides, etc. are all crosslinkers suitable for electron beam crosslinking and UV crosslinking. In order to generate thermal crosslinking, metal chelate may be added. Or a metal salt, such as an aluminum chelate or a titanium chelate. The amount of cross-linking agent can be adjusted to adjust the degree of cross-linking of the thermal cross-linking. Polyacrylate is usually added in an amount of 〇1% to 〇6% (accounting for -15- 201211425 Basic compound weight percent of metal chelate, epoxide, or isocyanate compound to achieve the desired degree of crosslinking. If selective crosslinking with UV light, pressure sensitivity in polyacrylic acid A photoinitiator that absorbs ultraviolet light is added to the adhesive. Benzoyl ether is a good photoinitiator, such as phenyl methyl ether and phenyl isopropyl ether, substituted acetophenone, such as 2,2-diethoxy Acetophenone (Irgacure 65 1® from ciba Geigy8), 2,2-dimethoxy-2-phenyl_1·phenyl ethyl ketone, dimethoxy hydroxyacetophenone, substituted α-keto alcohol (eg 2-oxooxy-2-transpyridinone), aromatic sulfonic acid gas (eg 2 naphthylsulfonic acid gas), photoactive oxime (eg 1-phenyl-L2·propanedione-2 (o. Ethoxycarbonyl) oxime) and the like. The above-mentioned photoinitiators, other photoinitiators which can also be used, and other Norrish-I and Norrish-II photoinitiators may have the following groups: benzophenone group, acetophenone group, Benzoic acid group, benzoinyl group, hydroxyalkylphenone group, phenylcyclohexyl ketone group, fluorenyl group, trimethyl methionyl phosphine oxide group, mercapto thiophenyl morphinone group, amine group a keto group, an azo benzoate group, a carbitol group, a hexaarylbisimidazolyl group, a tridecyl group, an anthranone group, and each of the above groups may be additionally substituted with one or more halogen atoms and/or One or more alkoxy groups and/or one or more amine groups or hydroxyl groups are substituted. In Fouassier · "Photoinitation, Photopolymerization and Photocuring: Fundamentals and Applications'' (Hanser-Verlag, Munchen 1995) - all available photoinitiators are listed. In addition, in Carroyetal. et al. There are also instructions in this regard in Chemistry and Technology of UV and EB Formulation for Coating, Inks and Paints" (01dring (Hrsg.), 1994, SITA, London). The degree of crosslinking of the UV cross-linking can be controlled by the UV dose and the irradiation wavelength of the irradiation. The second adhesive (weakly viscous agent) is in principle weakly viscous - pressure sensitive adhesive system), the adhesive system that can be used face to face (especially with the same chemical compound grade:: face mentioned Adhesive strong adhesives, natural rubber adhesives, for example, acrylic vinegar adhesives, EVA adhesives, ones, and &quot;]W emulsions will be advantageous in the way of using EVA adhesives and acrylics Ester pressure-sensitive adhesive test, 耆J, in which the propionate pressure-sensitive adhesive is applied in the form of a solution, a melt, or a &amp;&quot;suspension. The point is in ABS and/or glass. The adhesion on the upper side should not be greater than ι(10)(10). The previous description of the adhesion-sensitive roofing adhesive is also applicable to natural rubber adhesives. 'A special method of the invention is that the right 丨 丨 a 4 哥利Ester pressure sensitive adhesives are used as adhesives with low adhesion. To achieve very weak adhesion, three different formulations can be used: Formulation 1) Conventional acrylate pressure sensitive adhesive as mentioned above, and added An additive that reduces adhesion; 2) The conventional acrylate pressure sensitive adhesive as mentioned above, but with a gel value greater than 90%; Formulation 3) Static glass transition temperature between 25 and 35 ° C (methyl, acrylate pressure) Sensitive Adhesives Formulation 1) The aforementioned (methyl-) acrylate pressure-sensitive adhesive (see Adhesive Adhesive) can be used. Reduce adhesion by adding additives that have little or no adhesion to themselves. -17- 201211425 For example, a resin that is completely or partially incompatible with a pressure-sensitive adhesive is a suitable additive. For example, the resin has a different polarity than the poly(meth) acrylate. In particular, the compatibility of C5_ and C9-hydrocarbon resins with poly(fluorenyl) acrylate is extremely low. Other suitable additives also include fatty compounds such as fatty acids or long chain decanoic acids. Such compounds have the following general formula:

CXHYR wherein R represents COOH, OH, NH2, S03H or an ester thereof, p〇3h or an ester thereof. However, other polar compounds can also be used. The number of carbon atoms X is between 12 and 30, and the number of hydrogen atoms is between 9 and 61. CXHY may be in a saturated or unsaturated state, or may be in an unbranched, branched, or toroidal state. A filler can also be added as an additive. For example, pyrolysis of tannic acid is a suitable filler. Pyrolytic nialic acid can be added to various fluids as a thickener, gelling agent, or thixotropic agent to alter the rheological properties of the fluid. Hydrophilic or hydrophobic citric acid can be used. In addition, a modified layer of phosphatase can also be used. Other natural, inorganic, or organic fillers such as carbonic acid, kaolin talc, dolomite, silicate, and the like can also be used. It is also possible to use cerium oxide, calcium sulfate and barium sulfate, aluminum hydroxide, glass fiber and glass fiber microbeads, cellulose powder, carbon black or the like as a filling.

Inorganic filled hopper filler in plastics and adhesives. Frequent additions include chalk, dioxide-18-201211425 Titanium, sulfuric acid i-bow and sulfuric acid pots increase the density of the composites because the density of these fillers is greater than the density of the polymer. That is to say, in the case where the layer thickness is the same, the single-sided area weight is large. There are also fillers that reduce the overall density of the composite. For example, hollow microspheres are a lightweight filler with a large volume. The beads are filled with air, nitrogen, or carbon dioxide. The outer shell of the beads is made of glass, and the outer shell of the beads is made of thermoplastic. In addition, there is also a polymeric filler having a density substantially the same as that of the pressure-sensitive adhesive polymer. Organic fillers such as polyethylene, polypropylene, polyamine, and polyacrylonitrile include vegetable and/or animal raw materials. It is preferred to use organic fillers that are well distributed, such as fibers, ground shells, dust, flour. It is best to choose proven raw materials (proven organic materials) as plant organic fillers - especially wood, cork, hemp, linen, green, pen, straw, hay, shell, corn, nuts, or It is a part of the above materials, such as the outer shell (such as the nut shell), the core, and the shell. There are only a few examples of the above, and there are many other options, such as wood chips, cork powder, shell powder, corn flour, and/or horse bell powder. Examples of animal organic fillers include bones, keratin (e.g., crab shell, worm shell), head lice, bristles, horns of animals, and are preferably used after pulverization. A very advantageous way of a T is that the particles of the filler have at least 99% of:: 疋: J, at 1 〇〇〇 μηη (if it is an approximately circular particle, the so-called size refers to a diameter such as granular particles, If it is a long strip of grain; -19- 201211425 means the maximum length, such as fiber). The proportion of the filler to the pressure sensitive adhesive is usually greater than 50% ' 7 〇 / ◦, or preferably more than 80%.

In addition, the surfactant is also an additive of the type A. The surfactant refers to a substance which can reduce the surface tension of a liquid, a limb, or the interfacial tension between two phases, and can promote or support the formation of a liquid and/or act as a solubilizing agent. The surfactant 诵赍s丄 is composed of a hydrocarbon group which does not adsorb water (hydrophobic) and a molecular part which adsorbs water (hydrophilic). The effect of the surfactant is to allow two liquids (e.g., oil and water) which are not originally mixed with each other to be mixed with each other. Surfactants also include detergents, detergents, and builders (washing materials) contained in shampoos. The alkyl group acts as a non-polar moiety. The composition of the polar part can be = different ways. The hydrophilic portion of the nonionic surfactant is composed of a hydroxide, an ether, or an ethoxylate. You are, for example, an alkylphenol polyethylene ether. The anionic surfactant contains a carboxylate, sulfonate, or sulfate group. The cationic surfactant contains a tetravalent ammonium group, and the amphoteric surfactant preferably contains a carboxylate and a tetravalent ammonium group. Natural surfactants such as lecithin can also be used. It is also possible to use some special surfactants such as sodium lauryl sulfate or hexadecyl tridecyl bromide. The level of surfactant additive is usually between 5% and 25%, or preferably between 10% and 20%. Further, a rubber monomer (natural rubber and/or synthetic rubber) may be added to the acrylate pressure-sensitive adhesive as an additive. The molecular weight (weight average) of the natural rubber added to the pressure-sensitive adhesive should not be less than -20-201211425 100,000 or so, or preferably not less than 500,000. In principle, natural rubber of various qualities can be used, such as raw rubber, RS S rubber, ADS rubber, TSR rubber, or CV rubber. The natural rubber should be selected according to the purity and viscosity required. And synthetic rubber can be selected from the following types of synthetic rubber and / or any proportion of it: copolymerized styrene butadiene rubber (sBR), butadiene rubber (BR), synthetic polyisoprene ( IR), butyl rubber (nR), halogenated butyl rubber (XIIR), acrylate rubber (Acm), ethyl vinyl acetate copolymer (EVA), and polyurethane. A very advantageous way is to use a rubber of the type of styrene isoprene styrene (SIS), styrene butadiene styrene (SBS), styrene ethyl butadiene styrene (SEBS). Other options include hydrogenated biguanide polymers and MSA (maleic anhydride) functionalized rubbers. Mixtures of natural rubber and/or synthetic rubber can also be used. The rubber additive is usually present in an amount of from 5% to 50%, or preferably from 10% to 30%. Formulation 2) This formulation uses a modified pressure sensitive adhesive derived from a compound previously described as a highly viscous adhesive. In order to reduce the adhesion, the temple selects a static glass transition temperature lower than -20 ° C, or preferably lower than the monomer, and crosslinks to the pressure sensitive adhesive gel value greater than or equal to 90%, or most Good is greater than or equal to 9 5 percent. The desired static glass transition temperature is achieved in the same manner as previously described. For ",, J 5 weeks to the desired gel value (the gel value of polyacrylate should be greater than or equal to 90%), in principle, should add at least 1 / 5 % of the basic polymer (weight VIII-21-201211425 ratio), or preferably more than 2% by weight of metal chelate, epoxide' or isocyanate compound, but the proportion of crosslinker should not exceed 10% ( (% by weight) 'to avoid the phenomenon of complete lake. The degree of cross-linking of electron beam cross-linking can be controlled by accelerating voltage and dose', and the degree of cross-linking is also determined by the amount of cross-linking agent and the thickness of the material to be irradiated. The degree of crosslinking by ultraviolet light, the amount of photoinitiator, the amount of crosslinking accelerator, and the dose control the degree of crosslinking of the ultraviolet curing. Formulation 3) The most suitable poly(meth)acrylic acid g of this formulation is intended to have a weight of at least 50%. It is composed of at least one acrylic monomer in the group of compounds of the formula: Ο

Ri wherein R^H or CH3; R2=H or ch3, or a branched or unbranched saturated alkyl group having 1 to 30 carbon atoms. The criterion for selecting the monomer component is that the polymer produced by the monomer is capable of being used as a viscous pressure-sensitive adhesive at a temperature which is low in viscosity. For example, the glass transition temperature of the homopolymer of the monomer used and/or the appropriate additive can be selected to meet this requirement. The static glass transition temperature of the pressure sensitive adhesive of this formulation is between +25 &lt; t to +35 χ:. The molecular weight (weight average) of the polyacrylate used should be 疋2 200,000 g/mo b or preferably $6 〇〇〇〇〇g/m. According to a particularly advantageous way, The adhesive formula is a strong adhesive 22-201211425, and a copolymerized ethyl-based polymeric photo-curing agent. The high level of the combination of i and C is the possible composition of the 4-didecyl 3 - 4: acid ester, of course, the sensible adhesive (acrylic acid vinegar 1) acrylate monomer Select this: θ methyl bis-esterate monoterpene. It is best to use vinyl esters and early bodies. ^ Hexenyl ether, occupies, with aromatic vinyl and dihaloethyl monomers at the alpha position. For example, ethyl acetate, vinyl compounds of clothing as ethylene ether, ethylene ethylene, vinylidene, vinyl pyridine, 1 Nattoethylene, Α π can be used monomers are not limited to acrylonitrile, etc. Of course, the real 1 is limited to some examples. Another advantageous embodiment is to use a photoinitiator with a collapsible double bond as a copolymer, a flat body such as a Norrish-1 initiator and a Newish-Π light bow hair conditioner. Suitable photoinitiators are listed as acetophenone acetoacetate and monoethylated benzophenone produced by UCB Corporation (Ebecryl p 36). It is well known in the art to be familiar with the art that a polymeric cross-linking initiator can be copolymerized via a free radical mechanism under ultraviolet irradiation. Another advantageous embodiment 疋 uses a static glass transition temperature comonomer. For example, an aromatic vinyl compound (e.g., styrene) is a suitable component in which the aromatic nucleus is preferably from 4 to 18 carbon atoms, and may contain other hetero atoms. Particularly advantageous examples include vinyl pyridine, N-vinyl quinone imine, methyl styrene, 3,4-oxystyrene, 4-vinyl benzoic acid, stupid methacrylic acid, stupid methacrylate, benzene Acrylate, alum, butyl acrylate, butyl butyl methacrylate, methacrylate and 4 - diphenyl methacrylate, 2 - naphthyl propylene and 2- The naphthyl decyl acrylate, and a mixture of the above monomers, the monomers which can be practically used in the present invention are not limited to these examples. 23-201211425 Sub 0: It is also possible to selectively add a pressure sensitive adhesive. The viscous resin described in the literature (1) and the literature can be used as a tackifying resin, in which a resin which can be uniformly mixed in the base polymer: optimum. The DSC can be used to measure the uniformity of the mixture. In the event of incompatibility, in addition to the static glass transition temperature, the melting peak temperature of the undissolved resin is also measured. The following are some examples of resins with good solubility? : pine resin, geopolymer resin, rosin resin, and branching, hydrogenation, polymerization, and esterification derivatives and salts of these resins, aliphatic and aromatic hydrocarbon resins, turpentine resin and pine resin, C 5 hydrocarbon resin, c 9 hydrocarbon resin, and other hydrocarbon resins. It is also possible to mix the above resins with each other or with other resins in an arbitrary ratio and then add them to the adhesive to adjust the adhesion of the finally formed adhesive. In general, all resins which are compatible (dissolvable) with the corresponding polyacrylic acid vinegar can be used, wherein the compatibility of the resin with the polyacrylic acid ester is mainly determined by the polarity of the polyacrylate. In addition to the static glass transition temperature, the degree of crosslinking is also an influencing factor for the adhesive properties of pressure sensitive adhesives. In order to achieve the desired pressure-sensitive adhesiveness, the gel value of the pressure-sensitive adhesive is preferably between 3 〇 % and 70%. Excessive cross-linking leads to a decrease in adhesion, and insufficient cross-linking leads to coagulation and cleavage. The aforementioned crosslinkers and photoinitiators can be used to achieve the desired range of gel values. In addition, the aforementioned cross-linking agents can be used for energy radiation crosslinking and/or thermal bonding to induce parental association through ultraviolet light, electron beam, and/or thermal energy. This section can refer to the aforementioned implementation. -24- 201211425 Method for producing pressure-sensitive adhesive It is preferable to use a conventional radical polymerization reaction to produce an acrylate pressure-sensitive adhesive coated on a viscous and weakly viscous surface. In the case of a free radical poly-α reaction, it is preferred to add an initiator system which additionally contains other radical initiators which promote the polymerization reaction, especially if it is decomposed by heat, by a soil azo initiator or a peroxy initiator. However, in principle, each initiator of the skilled artisan can be used as an initiator for the manufacture of acrylates. The free radical product of carbon + ' is described in detail in Houben Weyl's "Organic Chemistry Method, (v〇1 E 19a, Μ]" page). It is best to use these methods in an analogous way. For example, peroxide 'hydroperoxides, and azo compounds as a source of free radicals'. Typical free radical initiators include potassium persulfate, double peroxide, hydrogenated cumene peroxide, peroxycyclohexane嗣, a first-butyl peroxide, azobisisobutyronitrile, cyclohexyl carbonate ethyl lysyl peroxide, diisopropyl percarbonate, tert-butyl peroxide, phenyl alcohol Wait. A highly advantageous embodiment is the use of Vazo 88® 1, azo-bis(cyclohexanecarbonate cyanide) or azobisisobutyronitrile (AIBN) produced by the company (4) as a free radical initiator. The polymerization reaction can be carried out in a substrate, in the presence of one or several organic solvents, in the presence of water, or in the presence of a mixture of water and an organic solvent. Minimize the amount of solvent used. Suitable organic solvents include pure alkanes (such as hexane, heptane, octane, isooctane), aromatic hydrocarbons (such as benzene, toluene, xylene), esters (such as ethyl acetate, propyl acetate, Butyl acetate, hexyl acetate), halogenated hydrocarbons (such as chlorobenzene), alkyl alcohols (such as A-25-201211425 alcohol, ethanol, ethylene glycol, ethylene glycol monodecyl ether), ethers (such as two Ether, dibutyl ether), and mixtures of these solvents. The aqueous polymerization can use a co-solvent which can be mixed with water or hydrophilic to ensure that the reaction mixture can maintain a uniform state during the monomer conversion. Cosolvents suitable for use in the present invention include aliphatic ethanol, ethylene glycol, ethylene glycol ether, pyrrolidine N-alkyl pyrrolidone, alkyl pyrrolidone, polyethylene glycol, polypropylene glycol, decylamine. , enemy vinegar and salts, vinegars, organic sulfides, sulfoxides, sulfones, alcohol derivatives, hydroxy ether derivatives, amino alcohols, ketones, and derivatives and mixtures of these substances. The polymerization time is between 2 hours and 72 hours (depending on the degree of polymerization and temperature). The higher the selected reaction temperature, that is, the higher the thermal stability of the reaction mixture, the shorter the reaction time selected. In order to initiate the polymerization reaction, the heat input to the thermal decomposition initiator is the most important condition. The polymerization reaction can be initiated by heating the thermally decomposed initiator to 50 ° C to 1 60 c (depending on the type of initiator). An advantageous method in the manufacturing process is to polymerize the acrylate:breaking adhesive in the substrate, especially the prepolymerization technique: using k methods. The polymerization reaction is to irradiate ultraviolet rays to induce 疋 only w to a small degree of polymerization (about 丨〇 to 3 〇%, then can be destroyed into the film (the simplest case is ice), and then in the water to gather questions The degree of polymerization is completely polymerized. These granules can then be used as an oleic acid melt adhesive, in order to utilize the melting process: 仃, preferably using a film material compatible with the polyacrylate... The polymerization method is also before or after the polymerization: Material. Isothermal -26-201211425 According to the invention, the FR-+i^ method is used to manufacture the pressure-sensitive adhesive of the present invention. The method of controlling the free radicals or the active polymerization process to 0 mother yf l'. The method of making acrylate adhesives is anionic polymerization. This square, table ^

It is not preferred to use an inert solvent as a reaction medium, such as an aliphatic or cycloaliphatic #J hydrocarbon or other aromatic hydrocarbon. Foam The double-sided pressure-sensitive adhesive seal of the present invention has at least one foam d-layer layer. The I-bubble beads are made of a foaming polymer or copolymer based on at least a bismuth bead material. A layer, a layer based on a mixture of 'polymers or copolymers', or a foam based on a laminate of 2:3 or a plurality of foam layers. P is such that the laminate composed of 2, 3, or more layers does not have foaming in each layer, and can also be used as a foam, provided that at least one of the layers has foaming, wherein the laminate is the most Preferably, at least the outermost two layers are foamed, and at the same time it is preferred to use the previously mentioned foam layer as the foam layer of the laminate. A very advantageous way is that the foam used is a foam layer composed of a 'buffer compound, a foaming copolymer, or a foaming (co)polymerization mixture, and is preferably a foam according to the following description. specification. This condition also applies to the foam layer of the aforementioned foam. The foams which can be used according to the invention contain and/or (especially in the case where the foam body consists of only one foam layer) foaming homopolymers and/or copolymers of ethylene 'especially low density and very low density (LDPE) , LLDpE, phantom polyethylene (PE), ethyl vinyl acetate copolymer (EvA), and a mixture of the aforementioned -27-201211425 polymer (eg PE-EVA foam) 'in addition to foamed polyvinyl acetate, poly Propylene, ethylene propylene diene monomer (EPDM), and thermoplastic elastomer based on styrene block copolymer. Crosslinked or uncrosslinked foam materials can be used. A particularly advantageous way is to use polyethylene, acetic acid. Ethylene (EVA), and polypropylene as a layer of foam or foam. A very advantageous embodiment is the use of a polymerization mixture of polyethylene and vinyl acetate, the roots of which are dyed in white or on a layer The vinyl acetate content of vinyl acetate in the characteristic corona pretreatment is not more than 丨5〇/〇. According to the invention, it is preferred to brighten or darken the foam, especially color, anthracite, or black. The entire foam can be dyed to stain only one layer of the foam. In order to achieve a better anchoring effect on the beads, the beads used in the present invention can be pretreated. Corona, corrosion, and/or It is possible to apply the adhesive agent. The purpose of applying the adhesive is to improve the Z of the film. A particularly advantageous way is to simultaneously treat the foamed layer and the corrosion treatment. It can be used for one side of the foam. The double-sided foam of the present invention has a closed cell structure. The block foam can be integrated or non-integrated. The present invention also uses a laminate composed of foam. For many pairs of portable electronic products, The factor of consideration for the foam unit 'because the volume of such articles is shrinking: yes - the components used (including the seal) should also be reduced as much as possible so the maximum unit height (that is, in the direction of the seal thickness = bubble) Bead length) is best to ,, between the pottery... the blister bed ^ most ^ single attack large unit -28- 201211425 degrees (that is, the maximum unit length in any direction perpendicular to the seal thickness) It is between 0.1 -1111 and 1 mm, or preferably between 〇 and 0.6 mm. All foam units are preferably located in this size range. To ensure good sealing, the foam unit is in any spatial direction. The upper dimensions should not exceed 80%, or preferably no more than 7〇%, of the foam in this direction of the foam unit. A very advantageous case is the maximum unit size (usually the largest foam unit maximum) Size)' is the shortest path for sealing to create a hermetic effect, not exceeding 8 〇% of the minimum lamella width of the tamping, or preferably not more than 7%, for optimal sealing. Pressure Sensitive Adhesive Sealing The total thickness will vary with the thickness of the foam. The maximum layer thickness of the foam is preferably 400 μϊη. In order to have a foaming effect, the minimum thickness should not be less than 5 〇 μιη. The foam break density constituting the foam is preferably between 丨〇〇 and 4 〇〇 kg/m3. Other layers for selective use According to an advantageous modification, the pressure-sensitive adhesive seal of the present invention can be reinforced with one or more tailoring films. The role of the cut body is to improve the stability of the pressure sensitive adhesive seal. One of the benefits of this is that the reinforced seal material is more easily punched out. The film cut is preferably based on a polymer that can be extruded or cast into a film. The following are a few examples of suitable film materials: polyester, polymethacrylate, polycarbonate, polyamide, polyolefin, polyethylene, polyurethane, polyimine, nylon. A particularly advantageous implementation -29-201211425 is the use of polyethylene terephthalate (PET). A very advantageous way is to use one or more film-forming layers made of polyethylene terephthalate, but other polymers which can be made into a film can also be used. The film cut may be transparent or may be dyed or painted white, anthracite, or black. The film thickness should be between 4 μm and 50 μm, or preferably between ι 2 μ〇 and 25 μm. The layer thickness of the adhesive layer is preferably between 1 〇 0 claw and ΙΟΟ μιη. An advantageous method is to limit the layer thickness of the viscous pressure-sensitive adhesive to 50 μm or less. For certain pressure-sensitive adhesive formulations, an advantageous way is to limit the layer thickness of the pressure-sensitive adhesive to less than 2 μm. An advantageous way is to adjust the layer thickness of the viscous waste-sensitive adhesive to 50 μϊη α to connect to the desired adhesive range. ----------- The reinforced membrane can be pretreated first. Corona, narration, and/or application test Attached = Yes? The pretreatment method, in which the purpose of applying the adhesive is particularly advantageous, is to treat the film p. Depending on the structure of the product, it can also be painted: :... Straight package: Defined coating adhesive 1 - Type 疋: blister directly on the cut film, so that it is not familiar with the technology, umbrella It can be used as a coating adhesive for all kinds of materials (both reinforced film and foam). Gas*曰ga &gt; Sensitive adhesives are most suitable. j The early adhesive layer (without tailoring) is coated with an adhesive tape and a symmetrical double-sided cut material is suitable for applying adhesive. ^ ^ ^ ' -30- 201211425 Adhesive coating is required to ensure the composite strength, so it is measured according to A/TM-D 3330 Method C (18-degree measurement) before the adhesion of the second adhesive on the ABS surface, especially before the complete failure. The adhesion of the applied adhesive needs to be able to ensure that it does not fail. This ensures that the seal will not break off when it is released from the substrate again. An advantageous embodiment of the application of the adhesive layer is characterized in that Maintaining the total thickness of the seal of the present invention to a very thin extent. An advantageous way is to use thickness More than 5 (), &lt; preferably not more than 3 - coating adhesives. A particularly advantageous embodiment is that the coating/coating layer has a thickness of only 2 () μηη, and is preferably used for mixing Resin polyacrylate and/or polymethacrylate based adhesive layer. Coating adhesive or preferably not when manufacturing a single layer of adhesive layer without trimming The weight per unit area should not exceed 5〇g/m2 and exceed 30g/m2. If chemical pretreatment is required, the cut body can be first coated with a layer of which is particularly advantageous in that it is coated with an active primer. Adhesive is a suitable primer material. The cut layer (film cut and / or bubble body) back to the surface of the coated adhesive: the pretreatment of the surface 'helps to improve the external point The embodiment of the product layer c of the coating layer, the bubble, the blister material, or the bubble, is used as a foam (cut material), a in the product structure described below. According to an advantageous way = 201211425 early layer foam, in order to be able to make very thin Sealed. 1 shows. In the simplest case, the pressure-sensitive adhesive tape has a structure as in the first product, where: = adhesive with strong adhesion, especially pressure-sensitive adhesive (first adhesive) 2 = foam = viscous adhesive, especially pressure-sensitive adhesive (second adhesive) a In addition, a multilayer structure can also be realized. Figure 2 shows that the effect of the tailored film (4) is Reinforced adhesion: layer: on the other side. However, the body film (4) can also be used on the side where the viscosity is weak and the adhesive layer is located, as shown in Fig. 3. According to an advantageous embodiment Between the cut-off film (4) - layer: adhesive, | see Figure 4 and Figure 5 (Fig. 4: cut film and coating: the adhesive is located on the side with strong adhesion) Figure 5: The cut film and the post-coating agent are located on the weak side. A further advantageous embodiment is that there is more than one reinforcing tamper (4). The example shown in Fig. 6 has two tailoring films (4), and the two tailoring films (4) are coated and adhered. The agent (5) is fixed on the foam (3), and the scope of the present invention is not limited at all by this embodiment. If the thickness of the foam is 4 〇〇 μη or less, the thickness of the seal of the present invention is 500 μm or less. It is also possible to produce a seal having a thinner thickness, i.e., 400 μm or less, or even 3 Å | Im or thinner. According to the present invention, a foam having a thickness of 丨〇〇ηηι or thinner, or even 疋5〇μηη or thinner can be used. The thickness of the seal is mainly determined by the thickness of the foam and the penetration depth of the pressure-sensitive adhesive to the foam. For example, the coating amount of the adhesive in the code is 2〇g/m2 to 60g/m2 (for example, 50g/m2). -32- 201211425 The thickness of the seal of the present invention is approximately 1 μm. The width of the tabs sealed at their narrowest point according to this month's method shall not exceed U mm in order to ensure sufficient stability. The width of the tabs at the narrowest part of the seal shall not be less than 0.5 mm. For example, a particularly advantageous way is that the width of the narrowest portion of the seal is about 〇8 mm. The shape of the seal can be frame-shaped (circular, elliptical, rectangular 'squares'), and the width of the tabs can be fixed (between 贿.5 bribes, preferably 〇8), but it can also be Irregular 'that is, the width of the tab will change, and one or more (four) narrowest points will appear within the range of the tab mentioned in the above. This seal is perfectly adapted to the position of the seal and/or the shape of the member. According to the present invention, the sealing material can be first wound into a roll shape, particularly before being punched or cut into a usable seal. For winding, it is preferred to cover the sealing material with a release film or a release paper. Cellophane 'HDPE linings, as well as LDPE linings, are suitable release liners, which in the advantageous embodiment provide different levels of separation. Another embodiment of the invention is the use of a release film. In an advantageous embodiment, the &apos;35 type membrane also has different grades of separation. Further, it is also possible to cover the sealing material with two release films or release papers, or the same release film and release paper. ^ The seal of the present invention is used to seal the seam between the two members, especially for sealing plastic, glazing, mixing (untreated, treated and/or two-material sealing of the invention) Suitable for sealing m-members -33- 201211425 or joints between components and / or friends and crafts w. 1 opening, what is referred to herein as electronic products refers to card-like electronic products, and / Or communication power products such as mobile phones, PDAs, car planting electric house, computer, digital camera, display, digital reader, right-hand double t-day organic light-emitting diode display (〇LEm, solar energy) Battery modules (such as electric servants and '-snow... L solar cells, organic solar moon batteries, enamel solar cells). w隹 In this manual, the so-called component county is used in electronic products. v All structural units and their aggregates, such as electronic components (individual and integrated parts), housing parts, optical and / or mechanical protection devices (protective sheets, with M-monthly moonside grille), electronic modules ,antenna, The display area, the circuit board that is not equipped and/or equipped with an electron tube. In the adhesive state, the seal must be able to be removed again on at least one adhesive surface, and the residue cannot be recorded on the adhesive surface. “The sentence is reversible and repeated for multiple uses. Therefore, this seal can be removed in addition to being removed at 2, and the sealed replacement parts (eg mobile phone:) can be retained after replacement (preferably through The adhesive side is strong, and the seal can be removed multiple times, reused, and replaced, wherein the seal is adhered to the outer surface of the outer surface to ensure a sealing effect on the surface. The method for sealing and sealing of the present invention is to adhere the two sides of the double-sided pressure-sensitive adhesive of the present invention to the member forming the joint. Through the closed porous structure and the sealing effect of the bonding due to the bonding, the whole The seam is sealed and the required pressure does not exceed the pressure required to produce a pressure sensitive bond. The 'thin hammer ratio' of the seal should not exceed 25 ± 1 of its free state (unpointed state). %,or A particularly advantageous way is not to exceed 0/〇. In a state of use, the seal is not -34-201211425 is thinned by the hammer (that is, there is no pressure. . ) The thinning rate of the hammer on this day (in the error sample 々151 Inside; see deviation) is %±1% [hammer thin ('f precision-circumference, where the thickness difference is as...the thickness of the hammer: the thickness of the hammer) "M" refers to the state of use, "not hammered" means that the seal is in an unbonded state and is not hammered.] 黏 adhesion of small components, such as adhesion of the joints + buckles, etc., at least In a face two solid or uncovering 'protective cover (protected to / on a face (preferably the outer face) is reversible because it is a sticky adhesive (the first _ adhesive, especially pressure sensitive adhesive) Real I) produces a point. In the future, when the + generation of golden bamboo is torn apart from the position of the hunting seal, the internal structure of the seal will not change substantially. The original a- ^ branch causes the internal layer to be connected (for example, between the beads and the adhesive, the bubble Between the application of the adhesive, between the bubble and the film t, between the adhesive and the film, between the film and the adhesive, or the weak side of the foam before the foam structure is destroyed. Has been pulled away. The latter can be achieved by selecting the appropriate unit volume weight for the foam, as this results in a stable foam. Preferably, the bond between the members of the seal of the present invention is not produced by the adhesive layer of the seal, but by the structural means of the electronic article itself, such as by mechanical means or by the use of tape which does not require a sealed closure. The function of the sealed adhesive layer is therefore to anchor the seal to the seam forming the seam seal and to selectively support its coupling. Therefore, the sealed structure does not need to match the tape structure that produces the joint. Therefore, it is possible to achieve a viscous adhesive having a small adhesive force on AB s and/or glass, thereby improving reproducibility and reversibility on this surface. Figures 7a and 7b show the advantages of the sealing and sealing method of the present invention over the technology of the previous paragraph.帛7a is a prior art seal, and the figures show the seal of the present invention. Figures 7a and 7b show a display window (i2) (especially a display window made of PMMA) fixed and sealed on the outer casing of the electronic device (especially the outer casing of the frame t), but this example is only 乍It does not impose any limitation on the scope of the present invention. The function of the display window (12) is to protect the electronic display device (11), such as the LED of the display. Between the display window (12) and the casing (13) Yes—Seam (7), moisture, dirt, dust, etc. may leak through the seam (F). Therefore, the seam must also be sealed. The prior art uses traditional double-sided tape (1 4) to display The window is fixed and a foam seal (15) is placed under the tape. The foam seal (15) is sealed after being pressed, but the joint will also cause the foam to lose its pressure and pressure, because the foam can absorb high deformation energy. The effect of absorbing pressure is higher. Due to the design, if the display window is removed from the casing, the pressure between the display window (12), the casing (13) and the display device (11) becomes smaller. Will irreversibly lose the sealing effect. See section 7b Figure, if the seal (D) of the present invention is used, the fixing of the display window (12) on the outer casing (13) is achieved by another means of 'fixing the members to each other, for example, through a double-sided tape (16) (if The member can be replaced or can be repeatedly removed, and a mechanical connection, such as a meshing connection, can be used. The sealing function is directly through the seal (D) of the present invention in the display window (12) and the display device (11). Intermittent, but the sealing effect has no effect on the fixing of the component (or only a small effect). Since the double-sided coating is coated with a pressure-sensitive adhesive, the sealing (D) can be fixed to the display window (12) and The display device (11) is 'at the same time because this fixing and sealing (D) has a closed porous structure' so that it does not require a lot of pressure to produce a sealing effect. In this case, the sealing (D) is sticky. The strong side is the window (12), and the pure side is the display device (1). Both sides of the core seal 2 have pressure-sensitive adhesive properties, which enhances their sealing action. By = Seal (D) does not need to be thinned by the hammer (or does not have to be hammered very thin), because: There are many sealing materials that are not suitable for being thinned by the hammer can be used to make the seal: the connection between the components can be loosened More 纟, then re-linking: 斤 理 理 I will replace the seal 'will not lose the sealing effect (for example, when the electronic products such as mobile phones, the outer casing can be removed from the display unit. Sexually weak pressure-sensitive adhesive: the glass is torn apart and there is no residue. m hair:::: j The same principle can be applied to the joint between other members. An example is to illustrate how the seal (D) of the present invention can be applied to a display window (12) that is mechanically secured within the housing. Sealing (_ no pressure or almost no pressure is placed in the display window (12) and display The device (between 1 , and fixed to the display window (12) and the display device (Η) via the adhesive layer. _ = sample can be used without the pressure effect, the outer casing (13), the display is not ( 12) and the joint between the display device (1 1} (F) is completely sealed, and can not be In the case of breaking the seal (D), the joints are removed in a reversible manner. In the portable electronic article, there are many (4) that can be replaced in this way. For example, the opening of a microphone or speaker of a portable electronic product Seals are usually installed to prevent moisture, moisture or dust from entering. -37- 201211425 Seals are usually applied by sticking the sticky side to PMMA, polycarbonate, glass or other similar materials. The weaker side is fixed on a member made of ABS (especially unprocessed ABS) 'polyamide (especially glass fiber reinforced polyamide) or similar material. When using the method of the invention The aforementioned adhesion is very suitable for these materials. It is preferable to make the seal of the present invention into a ring capable of sealing the opening, a ring to be wound, or a frame (4). The components become smaller and smaller 'so the seal must be at least 1.5 mm or narrower at its narrowest point. For example, a circular or polygonal shape (for example square or rectangular) can be achieved, and The width is always less than or equal to 1.5 mm. If it is made into an angular frame shape, at least two opposite tabs have a width less than or equal to K5 mm. These narrow tabs also do not allow moisture, moisture, dust. Or other substances that adversely affect the electronic port pass. However, according to the prior art, such narrow tabs cannot be realized because the narrow tabs generate large and uncontrollable deformations under pressure, so It is evenly compressed so that it does not produce sufficient sealing. This problem can be solved by a pressureless sealing method. Therefore, according to the method of the present invention, a back seal having a small thickness (especially a seal having a tab width meeting the above requirements) is used. It is also possible to achieve an excellent sealing effect. [Embodiment] The present invention will be further described by the following tests, but the scope of the present invention is not limited by the test of the selected test body. -38- 201211425 The test methods used are as follows: 1 80-degree adhesion test (test a) The adhesion test was carried out in accordance with ASTM D 33 30 Method C. Different from point 6.2 of the specification, the board (measuring substrate) used in the present invention is not a steel sheet but a polymethyl methacrylate (PMMA), an acrylonitrile butadiene-styrene copolymer (ABS), and Made of glass and the boards meet the specifications mentioned above. The surfaces of these three materials are smooth (glossy/scratch-free, unprocessed, and cleaned. The three measuring substrates are in accordance with ASTM D 3330/D 33 30Μ _04. The ABS and tantalum measurement substrates were cleaned with ethanol, and the substrate was measured with a glass of C. II. ^ After 7 days of stretching time (stretching conditions: 23 〇 c, relative to 50%), the adhesion was measured. The measurements were made at room temperature and with air conditioning (23 ° C 'relative humidity catch). All measurements (in N/cm) were determined after 3 measurements and averaged. In addition, I also want to judge whether there is a pressure-sensitive adhesive sword remaining on the glass surface. Sealing test (test Β) A slab (thickness i mm, food 75rnm, width tang (η mm) Bonded to an ABS board (external '〇,』, length 75 mm, 庳 00 mm, thickness 3 mm) (ΡίνίΜΑ;^ λ ώ ', +. θ ρ ^ 1 ΜΑ and ABS specifications as described above, but 疋The size will be different.) The spleen bad cow is used for sticking: the outer dimensions of the frame-shaped (rectangular) punching part = two blanks with a uniform width of 2mm, all with a uniform width of 1.5mm; {all are stamped by the width of the Ί Ί 、, all faces are -39- 201211425 1 The punching of the uniform width of the mm is tested. The bonding area is 496 mm2 (with a width of 2 mm), 375 mm2 (with a width of 1.5 mm), and 244 mm2 (with a width of 1 mm). In the case of first pressing the punching member for 6 seconds with a pressure of 5 kg, the punching member is bonded to the ABS surface. The material to be used should be placed in an environment of 23 ° C and a relative humidity of 50% for 24 hours before bonding. 〇.25g of calcium chloride dry powder, then pull the release liner from the blanking part, place the PMMA board on the AB S board in a symmetrical manner' and then press it with a pressure of 5 kg for 6 seconds to make two pieces The board is bonded. The weak side of the seal blank is fixed on the aBs, and the strong side is fixed on the PMMA. In the absence of pressure (hammer 4 rate 1 ± 1%), the seal of the test body Sex is within the range of error accuracy.

The accuracy is • 〇001g 〇 T〇ied〇 The PM100 electronic balance is weighed at 23. (:Measurement in an environment with a relative humidity of 50% -40 - 201211425 Pullability test (test c) Bond a piece of PMMA board (thick sound! Ε Λ hand lmm, length 45mm, width 35 mm) to an ABS The frame (outer scale feet + 焱 and W 砟 size is 5 〇 mm in length, width 40 mm, thickness 3 mm). Cut the area of 25 mm x 35 mm in the center part of the frame. The sealing test of the present invention The body is made into a blank for adhesion. The outer dimensions of the blank are 4 6 , "two 46 mm X 36 mm. The width of the tabs on all sides is 2 mm. The weak side is fixed" AR ς μ ^ Xinshe ABb, the viscous side is fixed on the PMMA with a bonding area of 3〇4 mm2. Pressing with a pressure of 5 kg for 6 seconds for bonding' and then standing in the environment with the addition of relative wetness 72 hours. Then manually pull the ABS frame off the pMMA board. The tape should not have any residue left on the ABS frame. The 2 mm tab width ensures that all narrow tabs can be left without any residue. Tear open. Manufacture of test polymer 1 (viscous pressure sensitive adhesive) Acrylic acid (3kg), methacrylate (1〇kg) , 2_ethylhexyl acrylate (35kg), butyl acrylate (35kg), and acetone/isopropanol mixture (53.3kg 'ratio 85:15) are loaded into the traditional 200L reactor for free radical polymerization "After nitrogening and stirring for 45 minutes, the reactor was heated to 58 ° C and 40 g of 2,2,-azobisisobutyronitrile (AIBN) was added. The external heated bath was then heated to wc and The temperature of the external heating bath was maintained at this temperature during the polymerization reaction. After 1 hour of reaction time, AIBN (40 g) was added again. After 5 hours and 10 hours, a mixture of acetone/isopropanol (15 kg, respectively) was added. Proportion 85:15) -41 - 201211425 Dilution. After 6 hours and 8 hours, add dicyclohexanoic acid dicarbonate (100g, dissolved in 800g of acetone). Name: perkad〇x 16®, manufacturer: Akzo Nobel). After 24 hours of reaction time, the reaction was interrupted and cooled to room temperature. Then 20% by weight of C5-C9 KW (TK90H) resin (manufacturer. VFT Ruttger) was added to the solution. Then heated in a vacuum at a temperature of 1 2 0 C to remove the solvent. Then add 〇 2 % (% by weight) of the inscription - (III) - acetoacetate (dissolved in isopropanol at a concentration of 1 〇 / 〇) ' and vigorously stirred. Then add acetone to dilute the solution to a solid amount of 2 5 /. The degree 'is then coated with a doctor blade. After drying for 10 minutes at a temperature of 12 ° C, the pressure-sensitive adhesive reaches the degree of complete crosslinking" Polymer 2 (weak pressure sensitive adhesive) This is done in a similar manner to the manufacture of polymer 1. After the end of the polymerization reaction, 10% by weight of stearic acid (dissolved in gasoline) was added. Then add gasoline to the extent that the solid content of the solution is 25%, and then add 0.4% by weight of aluminum _(ΙΠ)_ acetam acetonide (dissolved in isopropanol, concentrated i 1 〇%). And stirring vigorously. After drying for 10 minutes at a temperature of 12 generations, the pressure-sensitive adhesive reached a degree of complete crosslinking. Polymer 3 (a weakly pressure-sensitive adhesive) was carried out in a manner similar to the production of Polymer 1. After the end of the polymerization reaction, 5% by weight of saponin was dissolved in propylene (dissolved in isopropanol, indifference H)%) and strongly found to fall. After drying for 10 minutes at a temperature of 12 generations, the pressure-sensitive adhesive reached a full cross-linking process of -42 - 201211425 degrees. Polymer 4 (weakly sensitive pressure sensitive adhesive) Acrylating acid (3 kg), propionate + octaester (4 〇 kg), butyl acrylate (37 kg), and acetone / gasoline / different A propanol mixture (53 3 kg, ratio 40:57:3) was charged to a conventional 2-liter reactor for radical polymerization. After nitrogen was passed through and stirred for 45 minutes, the reactor was heated to 58 ° C and 40 g of 2,2,-azobisisobutyronitrile (AIBN) was added. After 5 hours and 1 hour, each 15 kg of gasoline (60/95) with a certain fraction range was diluted. After 6 hours and 8 hours, add one time dicyclohexyl hexahydrate dihydrate (l〇〇g, dissolved in 8 〇 0g of a certain fraction range of 'fly' from (60/95) 'name: perkacj〇 x 16®,Manufacturer: Akzo

After 24 hours of reaction time, Nobeip interrupted the reaction and cooled to room temperature. Next, 〇6°/〇 (by weight) of difunctional isocyanate (Demodur L75 'manufacturer: Bayer AG) was added and stirred vigorously. The solution was then diluted with acetone to a level of 25% solids and then coated with a spatula. After drying at a temperature of 1 2 ° C for 1 〇 minutes, the pressure-sensitive adhesive reaches a degree of complete crosslinking. Coating Adhesive (Laminating Adhesive) Degassing a mixture of acrylic acid (5g) and cyclohexyl 2-ethyl acrylate (95g) and then passing nitrogen to saturation, then placing it in an oxygen In a polyethylene bag (PE bag). The PE bag has a deuterated inner layer and the outer layer is covered with a layer of aluminum. Next, the reactor was irradiated with cobalt 6 Torr, and the radiation intensity was *OOKrad/h, and the total irradiation dose was 1 〇Krad. 〇5% (weight %) of Esacure ΚΙΡ 150 ΤΜ (α-hydroxyketone oligo[2-hydroxy-2-indole-43- 201211425 yl- l-[4-(l-fluorenylvinyl)phenyl]acetone ], manufacturer: Fa. Lamberti) was added to the mixture and used as a laminating adhesive. The laminate adhesive is applied to the transparent PET carrier film by a doctor blade and then coated with a foam material. The layered pressure-sensitive adhesive was subjected to ultraviolet polymerization and hardening using an ultraviolet device (manufacturer: Fa. Eltosch). The apparatus has an ultraviolet radiator (wavelength 250 nm, intensity 200 W/cm) without Hg added. The coated adhesive was passed through the apparatus at a rate of 1 Om/m in, and each sample was passed through the apparatus several times in order to increase the irradiation dose. Making a double-sided pressure-sensitive adhesive seal Polymers 1 to 4 were coated on a cellophane-release paper coated with 1.5 g/m2 of polyoxymethane (polydimethylsiloxane) using a coating bar. Polymers 1 through 4 are then dried in the drying tunnel at a temperature of up to 12 °C. The pressure sensitive adhesive is then applied to the corresponding carrier (foam or reinforced film). In order to improve anchoring, the foam should be corona treated first. If a PET reinforced membrane is used, corona treatment should also be performed first. Strengthening film Use the following film:

Mitsubishi RNK1 2: polyethylene terephthalate, thickness 12 μm foam: foam 1 : Sekisui Volara XLIM 0.2 mm soft (closed unit PE foam, thickness 0.2 mm). The maximum unit length was 330 μm, which was measured by the rem photographic technique, and the maximum unit height was 5 〇 μιη, and the maximum unit width was 1 60 μm. / Bao Mo 2 · Sekisui Volara XLIM 0.3 mm medium (closed unit PE foam 'thickness 0.3 mm). Using rem photography technology -44- 201211425 The maximum unit length is 370μηη, the maximum unit height is 7〇μιη, and the maximum unit width is 190μηι. Foam 3: Ruler § 8 (: (^?.? 01101^1^ 4701 -15 (mixed unit polyurethane foam, thickness 0.53 mm). Foam 4: Rogers Corp. PORONTM 4701-50 Firm Supported (Polyester foam of the mixing unit, the total thickness of the pet-reinforced film is 0.3 mm.) Example 1 One side of the foam 2 is coated with a polymer i (5 〇g/m2) and the other side is coated with a polymer 2 (25 g/m2) Example 2 One side of the foam 2 was coated with a polymer 1 (5 〇g/m2) and the other side was coated with a polymer 3 (25 g/m2;). Example 3 Coating one side of the foam 2 with a polymerization 1 (5〇g/m2) and the other side coated with polymer 4 (25g/m2). Example 4 Apply one side of foam 1 to polymer iyOg/m2) and the other side to polymer 3 (25g/m2) Example 5 The adhesive 2 was adhered to a PET film having a thickness of 1 2 μπ1 by applying an adhesive. Then, a polymer 1 (5 μg/m 2 ) was coated on the PET surface to obtain a polymer 3 (25 g/m 2 ). Apply to the foam surface. Example 6 Apply the adhesive to the pET film -45- 201211425 with a thickness of 12 μm. Then apply the polymer 3 (25 g/m2) on the PET surface to polymerize 50g/m2) coated on the foam surface. Reference Example 1 Each of the faces was coated with Polymer 1 (50 g/m 2 ). Reference Example 2 One side of the foam 1 was coated with a polymer 1 (50 g/m 2 ). Reference Example 3 Both sides of the foam 3 were coated with a polymer 1 ( 5Og/m2) Reference Example 4 One side of the foam 3 was coated with a polymer l (50 g/m2). Reference Example 5 The open foam surface of the foam 4 and the PET film surface were each coated with a polymer l (50 g/m2). The first step of the test results is to measure the adhesion strength of the sample and the reference according to Test A. The adhesion measured on the glass is measured. In addition to measuring the adhesion, it is also judged whether there is any residue left. In Table 1. -46 - 201211425 Table la: Adhesion (Test A) Example Adhesion (Test A - Glass) Adhesion (Test A - Glass) Example of the weak side of the sticky side 1 10.2 N/cm 0.6N/cm Example 2 1 0.1 N/cm 1 .ON/cm Example 3 1 0.4N/cm 0 · 8N/cm Example 4 9.8N/cm 0.5N/cm Example 5 1 0.8N/cm 0.5N /cm Example 6 1 0.5 N/cm 0.6 N/cm Reference Example 1 10.5 N/cm 10.7 N/cm Reference Example 2 lO.ON/cm ON/cm Reference Example 3 9.2 N/cm 9.3 N/cm Reference Example 4 9 .ON/cm ON/cm Reference Example 4 9.8N/cm 10.4N/cm Table lb: Focus (Test A) Example Adhesion (Test A-PMMA)) Adhesion (Test A-ABS) Example of the weak side of the viscous side 1 9.8 N/cm 0 · 5 N/cm Example 2 1 0.5 N/cm 0.8N/cm Example 3 ll.lN/cm 0.7N/cm Example 4 9 · 6N/cm 0.5N/cm Example 5 1 1.2N/cm 0.8N/cm Example 6 1 1.5N/cm 0.4N/ Cm Reference Example 1 10.1 N/cm 9.2 N/cm Reference Example 2 9.2 N/cm ON/cm Reference Example 3 9.8 N/cm 8.4 N/cm Reference Example 4 1 0.4 N/cm ON/cm Reference Example 4 9 · 9N /cm 9.1 N/cm -47- 201211425 It can be seen from Tables 1 a and 1b that the viscous side of all the examples has an approximate adhesion because even the reference example is coated with the polymer 1. The weakly viscous side of all of the examples of the present invention meets the requirement of an adhesion of less than 1.5 N/cm. The weakly viscous side of Reference Examples 1 and 3 was also coated with Polymer 1. Therefore, its adhesion is greater than ΙΟΝ/cm. References 2 and 4 were not coated with a tacky adhesive and were only coated on one side. Therefore, its adhesion is zero. In addition, it was observed whether the glass plate had residue on the weak side. The observation results of this part are shown in Table 2. Table 2: Whether there is residue on the weak side (Test A) Example residue (Test A) Example of weak adhesion side 1 No example 2 Benefit example 3 No example 4 No example 5 No example 6 No reference Example 1 A lot of residues Reference Example 2 No Reference Example 3 A lot of residues Reference Example 4 Benefit Reference Example 4 Foam splitting -48- 201211425 As can be seen from Table 2, the pressure-sensitive adhesive seal of the present invention does not remain on the glass substrate. Any residue underneath. Only Reference Examples 1 and 3 will leave a lot of residue. The second test is to test the sealing effect according to Test Method B. The tests for this section are listed in Table 3. Table 3: Sealing Test (Test B) Example Sealing Test (Test B) Tab width 2 mm Example 1 0.0004g Example 2 0.0002g Example 3 0.0002g Example 4 0.0002g Example 5 0.0003g Example 6 0.0003g Reference Example 1 0.0002g Reference Example 2 0.4254g Reference Example 3 0.0005g Reference Example 4 0.0034g Reference Example 4 0.0004g -49- 201211425 Example Sealing Test (Test B) Tab Width 1. 5 mm Example 1 0.0004g Example 2 0.0004g Example 3 0.0003g Example 4 0.0003g Example 5 0.0005g Example 6 0.0005g Reference Example 1 • 0.0005g Reference Example 2 0.4483g Reference Example 3 0.0129g Reference Example 4 0.0165g Reference Example 5 0.0136g Example Sealability Test (Test B) Sheet width 1 mm Example 1 0.0021 g Example 2 0.0013g Example 3 0.0017g Example 4 0.0018g Example 5 0.001 lg Example 6 O.OOlOg Reference Example 1 0.0013g Reference Example 2 0.4547g Reference Example 3 0.0363g Reference Example 4 0.0429g Reference Example 5 The results of the test of 0.0434g - 50 - 201211425 show that all the examples of the present invention have a good defect. Regardless of the width of the tabs of 2.0 mm, 1.5 mni, or 1 mm, the weight gain is minimal and significantly less than 0.01 g. The slight increase in weight may be caused by an increase in humidity or from moisture remaining outside the test body. The test case test case is very different. The sealing properties of Reference Examples 1, 3, 4, and 5 were not affected when the tab width was 2.0 mm. The focus is only slightly increased, and both are below 0 · 0 1 g. Only Reference Example 2 was observed to be slightly disturbed by water. The weight gain is 4.4254g, which is significantly greater than O.Olg. When the width of the tab is 1.5 mm, the performance of all the reference examples is deteriorated: not only the reference example 2's, the moisture content of the reference examples 3, 4, and 5 are all ’ :: the sealing property no longer exists. All of the examples of the present invention have only an increase in weight (all less than 〇〇lg), and therefore have a good seal when the width of the tab is ln „. The sealing property is not good. When the hair is 2, the reference examples 2, 3, 4 5, the density of 5 (all small ... g): all the examples have a very small weight increase and therefore have a good sealing. For the sake of testing, another fixed). Test results, _; Example 4 hammer thin 1 〇% (to Several clips have high water column test penetration; so that the thin and fixed time can not prevent the weight increase of 0.393 U. The 1 g 测 measured when the width of the web is 1.0 mm is also shown in Table 4. \ ((4)C) -51- 201211425 in this section

A &quot;---------, residual residue-------- residue Af « 111» residue »,,, residue --- substance Matter, it residue foam cracking residue foam cracking open residue blister crack ---------- Opening the test results of Table 4 can be seen that 'all the examples of the invention will not open There are residues. That is, no residue remains in the above Reference Examples 2 and 4, since both are single: coated with a pressure sensitive adhesive. On the other hand, since the viscosity of the reference examples 2 and 5 is very strong, the foam is cracked when pulled apart. The continuous embodiment shows that the seal of the present invention has a good seal in the uncompressed state and is superior to existing designs, such as a single-sided pressure-sensitive adhesive seal and a sealing effect by compression. [Simple description of the drawings] Figure 1: Basic product structure of pressure-sensitive adhesive tape -52- 201211425 Fig. 2: The structure of the pressure-sensitive adhesive tape of the body film 4 on the side where the adhesive layer is strong. Fig. 3: Structure of the pressure sensitive adhesive tape of the body film 4 on the side where the viscous adhesive layer is located. Figure 4: Structure of the pressure sensitive adhesive tape on the side where the cut film 4 and the applied adhesive are both on the viscous side. Figure 5: The structure of the pressure-sensitive adhesive tape on the side where the cut-off film 4 and the applied adhesive are both on the weak side. Figure 6: Structure of a pressure sensitive adhesive tape having two tailored films 4. Figure 7a: Seal of prior art. Figure 7b: Seal of the invention. Figure 8: The seal of the present invention is applied to a display window 12 that is mechanically secured within the outer casing. [Main component symbol description] 1 1st adhesive 3 2nd adhesive 3 foam body 4 tailoring film 5 coating adhesive 11 display device 12 display window 13 outer shell 14,16 double-sided adhesive tape 15 foam dense seal -53-

Claims (1)

201211425 VII. Patent Application Range: 1 · A tab or frame seal with a foam, a first adhesive applied to the top surface of the foam, and a first adhesive applied to the underside of the foam' The feature is that the width of the tab at the narrowest point is not more than 1.5 mm, the maximum thickness of the foam is 400 μϊη, and it is one or more closed porous bubbles with a spatial density between 100 and 400 kg/m3. Bead composition 'wherein the adhesion of the first adhesive to the surface of poly(methyl methacrylate) (PMMA) is at least 3 N/cm as measured according to ASTM-D 3330 Method C. The measurement according to ASTM-D 3330 method c The adhesive force of the second adhesive on the surface of the acrylonitrile-butadiene-styrene copolymer (ABS) was 1.5 N/cm. 2. The seal of claim 1 wherein the anchoring force between the first adhesive and the foam as measured by ASTM-D 3330, Method C, and the anchoring between the second adhesive and the foam The force is greater than the adhesion of the second adhesive to the ABS. 3. The seal of any one of the preceding claims, wherein the adhesion of the first adhesive to the surface of the poly(meth) methacrylate (PMMA) is at least 5 〇N according to ASTM-D 33 30 Method C. /cm, at least 7. 5 N/cm, or preferably greater than 9.5 N/cm. A seal according to any one of the preceding claims, wherein the adhesion of the second adhesive to the surface of the acrylonitrile-butylene-styrene copolymer (ABS) is measured according to ASTM-D 3 3 30 method c. The force is 1 〇N/cm or less. A seal according to any one of the preceding claims, wherein the maximum diameter of the foam unit does not exceed the tab width 7 〇 0 / 密封 sealed at its narrowest point. -54- 201211425 6. Any one of the above-mentioned patent ranges, i.e., between the thicknesses of the seals in the thickness of the foam, between 2 5 μηι to 2 00 μΓη. The length of the unit on the °, the sealing of any one of the preceding claims, in any one of the perpendicular to the dense" foam soap unit length in the center ... between the direction of the gap between 0.6 mm.疋 〇 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 The method of sealing the mouth is characterized in that: the seal of any one of the items 1 to 5 of the patent application is used, wherein the thickness of the sealed hammer does not exceed the thickness of the free state (unbonded state) of 25 ±1%, or preferably not more than 1〇./0. 1 〇. The method of claim 9 wherein the sealed hammer has a thinness of 0 ± 1 〇 / 〇〇 -55 ·