WO2011108442A1 - 粘着シート - Google Patents
粘着シート Download PDFInfo
- Publication number
- WO2011108442A1 WO2011108442A1 PCT/JP2011/054190 JP2011054190W WO2011108442A1 WO 2011108442 A1 WO2011108442 A1 WO 2011108442A1 JP 2011054190 W JP2011054190 W JP 2011054190W WO 2011108442 A1 WO2011108442 A1 WO 2011108442A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- sensitive adhesive
- adhesive sheet
- resin
- hole
- Prior art date
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/18—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet characterized by perforations in the adhesive tape
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/416—Additional features of adhesives in the form of films or foils characterized by the presence of essential components use of irradiation
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/006—Presence of polyolefin in the substrate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2425/00—Presence of styrenic polymer
- C09J2425/006—Presence of styrenic polymer in the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
- C09J2433/006—Presence of (meth)acrylic polymer in the substrate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/14—Layer or component removable to expose adhesive
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
- Y10T428/24322—Composite web or sheet
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
- Y10T428/24322—Composite web or sheet
- Y10T428/24331—Composite web or sheet including nonapertured component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
Definitions
- the present invention relates to an adhesive sheet that can prevent or remove air pockets and blisters, for example.
- resin materials such as acrylic resin, ABS resin, polystyrene resin, and polycarbonate resin may generate gas when heated, but when an adhesive sheet is attached to an adherend made of such a resin material. The gas generated from the adherend causes blistering between the adherend and the adhesive sheet.
- Patent Document 1 a pressure-sensitive adhesive sheet in which through holes having a hole diameter of 0.1 to 300 ⁇ m are formed with a hole density of 30 to 50,000 holes / 100 cm 2 has been proposed.
- Patent Document 1 a pressure-sensitive adhesive sheet in which through holes having a hole diameter of 0.1 to 300 ⁇ m are formed with a hole density of 30 to 50,000 holes / 100 cm 2.
- the through-hole may be visible to the naked eye, and the appearance of the pressure-sensitive adhesive sheet may not always be good.
- laser drilling may be used to form the through holes in the pressure-sensitive adhesive sheet.
- carbon dioxide laser processing is so-called laser thermal processing, which is different from laser ablation processing, and is a method of processing through a material decomposition process by heat.
- the base material is a resin film made of polyolefin such as polyethylene or polypropylene or a polyolefin-based thermoplastic elastomer
- the thermal decomposition temperature is high and the melting temperature is low. Then, it melts before scattering, and the internal diameter of the through hole is enlarged.
- the internal diameter of the through-hole is increased in this way, the appearance of the adhesive sheet is lowered due to the depression around the opening of the through-hole, or water or gasoline is applied to the adhesive sheet after the obtained adhesive sheet is attached to the adherend.
- the liquid may enter the through-hole, and the through-hole portion (peripheral portion of the through-hole) may swell, thereby deteriorating the appearance of the pressure-sensitive adhesive sheet.
- the internal diameter of the through-hole may be enlarged, and the above problem may occur (particularly, the base of Example 16 of Patent Document 2). For wood).
- the pressure-sensitive adhesive sheet may be used outdoors or in windows exposed to sunlight, exteriors of automobiles and motorcycles, etc., but in the case of a pressure-sensitive adhesive sheet having low weather resistance, cracks, whitening, etc. in a short period of time Occurs and the appearance is degraded. Therefore, a predetermined weather resistance is required in the pressure-sensitive adhesive sheet premised on such use.
- the present invention has been made in view of such a situation, and it is possible to prevent or remove air pockets and blisters through the through-holes, and to suppress an increase in the internal diameter of the through-holes, which is favorable.
- An object of the present invention is to provide an olefin-based pressure-sensitive adhesive sheet having an appearance and excellent weather resistance.
- the present invention provides a pressure-sensitive adhesive sheet comprising a base material and a pressure-sensitive adhesive layer, wherein a plurality of through-holes penetrating from one surface to the other surface are formed.
- the polyolefin resin (A) 50 to 88% by mass, the styrene resin and / or the acrylic resin (B) 10 to 48% by mass excluding the polyolefin resin (A), and the pigment (C) 2.0 to Provided is a pressure-sensitive adhesive sheet comprising a resin composition containing 30% by mass (Invention 1).
- sheet includes the concept of film
- film includes the concept of sheet
- a base material contains a styrene resin and / or an acrylic resin (B)
- heat processing especially laser heat processing such as carbon dioxide laser processing.
- a through-hole can be formed in a simple shape.
- the base material contains the pigment (C) in an amount larger than the normal blending amount
- the through-hole is formed in the base material by heat processing, particularly laser heat processing, and further, carbon dioxide gas laser processing.
- the excellent effect that the thermal damage of the material is small and the expansion of the internal diameter of the through hole is suppressed is obtained.
- the effect that the weather resistance of a base material improves is also acquired.
- the polyolefin resin (A) is preferably an ethylene copolymer containing an ethylene structure as a structural unit (Invention 2).
- the polyolefin resin (A) is preferably an ethylene- (meth) acrylic acid copolymer (Invention 3).
- the pigment (C) preferably has an absorption peak in the wavelength region of a carbon dioxide laser (Invention 4).
- the pigment (C) is preferably at least one selected from the group of inorganic pigments (Invention 5).
- the pigment (C) is preferably carbon black (Invention 6).
- the through hole is preferably formed by thermal processing (Invention 7).
- the thermal processing is preferably laser thermal processing (Invention 8).
- the laser used in the laser thermal processing is preferably a carbon dioxide laser (Invention 9).
- the hole diameter of the through hole on the surface of the base material is smaller than the hole diameter of the through hole on the adhesive surface of the pressure-sensitive adhesive layer (Invention 10).
- the present invention while being excellent in weather resistance, it is possible to prevent or remove air pockets and blisters, and even if the through hole is formed by thermal processing such as laser thermal processing, expansion of the internal diameter is suppressed.
- a pressure-sensitive adhesive sheet is obtained.
- the appearance of the pressure-sensitive adhesive sheet is deteriorated due to the depression around the opening of the through hole, or when liquid such as water or gasoline adheres to the pressure-sensitive adhesive sheet after being attached to the adherend. Even if it exists, those liquids enter the inside of the through-hole, and the appearance of the pressure-sensitive adhesive sheet is prevented from being damaged due to swelling of the through-hole portion (peripheral portion of the through-hole).
- FIG. 1 is a cross-sectional view of an adhesive sheet according to an embodiment of the present invention.
- the pressure-sensitive adhesive sheet 1 As shown in FIG. 1, the pressure-sensitive adhesive sheet 1 according to this embodiment is formed by laminating a base material 11, a pressure-sensitive adhesive layer 12, and a release material 13. However, the release material 13 is peeled off when the pressure-sensitive adhesive sheet 1 is used.
- a plurality of through-holes 2 penetrating the base material 11 and the pressure-sensitive adhesive layer 12 and extending from the base material surface 1A to the pressure-sensitive adhesive surface 1B are formed.
- air between the adherend and the pressure-sensitive adhesive surface 1B of the pressure-sensitive adhesive layer 12 and gas generated from the adherend escape to the outside of the substrate surface 1A through the through-holes 2, and will be described later.
- the base material 11 includes a polyolefin resin (A), a styrene resin and / or an acrylic resin (B) excluding the polyolefin resin (A) (hereinafter sometimes referred to as “resin (B)”), and a pigment.
- the main layer is a resin film such as a film made of a resin composition containing (C), a foam film, and a laminated film thereof.
- the polyolefin resin (A) is a polymer obtained by polymerization or copolymerization using at least an olefinic hydrocarbon as a constituent monomer, and is a copolymer with other monomers such as (meth) acrylic acid or (meth) acrylic acid ester. Polymers are also included.
- (meth) acrylic acid means both acrylic acid and methacrylic acid. The same applies to other similar terms.
- the polyolefin resin (A) may be selected from known polyolefin resins, such as ethylene, propylene, butene-1, 3-methylbutene-1, 3-methylpentene-1, 4-methylpentene-1, etc. These ⁇ -olefin homopolymers or copolymers thereof and copolymers of these with other monomers can be used alone or in combination of two or more. it can. Examples of other monomers of the copolymer include (meth) acrylic acid, (meth) acrylic acid ester, vinyl acetate, vinyl alcohol, and maleic anhydride.
- Typical examples of the polyolefin resin (A) are high density / medium density / low density polyethylene, linear low density polyethylene, polypropylene, ethylene- (meth) acrylic acid copolymer, ethylene- (meth) acrylic acid alkyl. Ester copolymer, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, ethylene-maleic anhydride copolymer, propylene-ethylene block copolymer or random copolymer, propylene-ethylene-diene compound copolymer Examples thereof include polymers, polybutene-1, and poly-4-methylpentene-1.
- an ethylene copolymer containing an ethylene structure as a structural unit is preferable, and an ethylene- (meth) acrylic acid copolymer is particularly preferable.
- these preferred polyolefin resins (ethylene copolymers), particularly ethylene- (meth) acrylic acid copolymers are used, the dispersibility of the resin (B) and the pigment (C) is improved, and the pigment ( Even when a large amount of C) is blended, there is an advantage that the pigment (C) is not easily removed from the film when the resin composition is formed into a film.
- the mass average molecular weight of the polyolefin resin (A) is preferably 50,000 to 3,000,000, particularly preferably 10,000 to 500,000.
- the content of the polyolefin resin (A) in the resin composition constituting the substrate 11 is 50 to 88% by mass, preferably 60 to 80% by mass.
- the styrene-based resin as the resin (B) is a polymer obtained by polymerization or copolymerization using at least styrene as a constituent monomer.
- Other monomers for example, vinyl monomers such as butadiene, (meth) acrylic acid, (meth) Copolymers such as acrylic acid esters and (meth) acrylamides are also included, but copolymers with olefinic hydrocarbons correspond to the above-mentioned polyolefinic resin (A). Not included in resin.
- the acrylic resin as the resin (B) is a polymer obtained by polymerization or copolymerization using at least (meth) acrylic acid or (meth) acrylic acid ester as a constituent monomer, and other monomers such as vinyl monomer, styrene, etc. However, since the copolymer with the olefinic hydrocarbon corresponds to the polyolefin resin (A), it is not included in the acrylic resin as the resin (B).
- the base material 11 contains the resin (B), so that the efficiency can be improved by heat processing, particularly laser heat processing such as carbon dioxide laser processing.
- the through hole 2 can be formed in a good shape.
- styrenic resin examples include polystyrene resin, styrene-acrylic acid copolymer, styrene-acrylic acid ester copolymer, styrene-butadiene-styrene block copolymer, and one of them is used alone. Or 2 or more types can be blended and used.
- acrylic resin examples include (meth) acrylic resin, (meth) acrylic acid alkyl ester resin, and the like, and one kind thereof can be used alone or two or more kinds can be blended.
- a styrene resin or an acrylic resin can be used alone, or a styrene resin and an acrylic resin can be used in combination.
- the mass average molecular weight of the styrene resin and the acrylic resin is preferably 50,000 to 1,000,000, and more preferably 10,000 to 500,000.
- the content of the resin (B) in the resin composition constituting the substrate 11 is 10 to 48% by mass, preferably 15 to 35% by mass.
- the content of the resin (B) is within this range, the through hole 2 having a good shape can be efficiently formed as described above.
- the content of the resin (B) exceeds 48% by mass, the weather resistance and solvent resistance of the substrate 11 may be lowered.
- the pigment (C) by adding the pigment (C) to the polyolefin resin (A) and the resin (B) in an amount larger than the normal amount, thermal processing, particularly laser thermal processing,
- thermal processing particularly laser thermal processing
- the through-hole 2 is formed in the base material 11 by carbon dioxide laser processing
- the thermal damage of the base material 11 is small, and the excellent effect that the expansion of the internal diameter of the through-hole 2 is suppressed is obtained.
- the effect that the weather resistance of the base material 11 improves is also acquired.
- the internal diameter enlargement of the through-holes 2 basically, as shown in FIG. 2, the maximum diameter d 2 at the base 11 of the through-hole 2, the diameter at the base material surface 1A of the through-holes 2 It is larger than d 1 and significantly larger than the diameter d 3 at the interface between the base material 11 and the pressure-sensitive adhesive layer 12 of the through-hole 2, but is not necessarily limited to those that meet such conditions.
- a case where the diameter (d 1 to d 3 ) of the through hole 2 is changed so as to cause the above problem is included. If the internal diameter of the through-hole 2 is expanded, so as to correspond to the diameter d 2 of the through-hole 2, tend to opening periphery of the through hole 2 is recessed (see FIG. 2).
- the content of the pigment (C) in the resin composition constituting the substrate 11 is 2.0 to 30% by mass, preferably 2.5 to 20% by mass. The above effect cannot be obtained when the content of the pigment (C) is less than 2.0. On the other hand, when the content of the pigment (C) exceeds 30% by mass, the mechanical strength of the base material 11 and consequently the pressure-sensitive adhesive sheet 1 is lowered.
- the pigment (C) may be appropriately selected from known pigments.
- the pigment (C) has an absorption peak in the wavelength region of the laser used.
- the through hole 2 is formed by a carbon dioxide laser, it is preferable that the through hole 2 has an absorption peak in the wavelength region (1087-962 cm ⁇ 1 ) of the carbon dioxide laser. Thereby, the through hole 2 can be formed with a small laser output.
- the pigment (C) is preferably at least one selected from the group of inorganic pigments.
- inorganic pigments include carbon black, titanium black, talc, kaolin, bentonite, mica, titanium mica, bismuth oxychloride, zirconium oxide, yellow iron oxide, bengara, black iron oxide, Gunjo, chromium oxide, chromium hydroxide, Examples include calamine.
- carbon black is particularly preferable. Carbon black is particularly excellent in the effect of preventing the expansion of the inner diameter.
- the maximum blending amount of carbon black in a polyolefin-based film is 1.00% (Carbon Black Association, “Carbon Black Handbook”, 2nd edition, Books, Inc. Publisher, May 25, 1972, P.361, Table 3.1). That is, as described above, the content of the pigment (C) in the resin composition constituting the substrate 11 is 2.0% by mass or more, which is an amount more than twice the content according to the common general technical knowledge of the industry. It is.
- the blending amount of the pigment in the black opaque base material made of the polyolefin-based thermoplastic elastomer used in Example 16 of Patent Document 2 is not necessarily clear, but is considered to be 1.00% by mass or less in the film.
- the resin film constituting the substrate 11 in this embodiment may include various additives such as an organic filler, an ultraviolet absorber, and a lubricant.
- the resin film constituting the substrate 11 in the present embodiment can be manufactured by a conventional method, but for example, it can also be manufactured by blending the pigment (C) as a master batch.
- the resin film may be formed by a casting method using a process material.
- a decorative layer is formed on the surface of the resin film by a method such as printing, printing, coating of a coating material, transfer from a transfer sheet, vapor deposition, sputtering, or the like.
- a coating layer such as an easy-adhesion coat or a gloss adjustment coat for forming such a decorative layer, a hard coat, a stain-proof coat, a surface roughness and a specular gloss.
- a coat layer such as a coat for adjustment and a coat for imparting weather resistance may be formed.
- these decoration layers or coat layers may be formed on the entire surface of the resin film or may be partially formed.
- a base material including the decoration layer or the coating layer it is called a base material including the decoration layer or the coating layer.
- the thickness of the substrate 11 is usually about 5 to 500 ⁇ m, preferably about 10 to 400 ⁇ m, particularly preferably about 20 to 300 ⁇ m, but can be appropriately changed according to the use of the pressure-sensitive adhesive sheet 1.
- the total light transmittance of the substrate 11 is preferably 0.1% or less when the thickness of the substrate 11 is 100 ⁇ m. Such a low total light transmittance indicates that the pigment (C) is sufficiently dispersed in the substrate 11. Thereby, in each through-hole 2 formed in the base material 11, said internal diameter expansion prevention effect is achieved. Moreover, when the pigment (C) which absorbs light is fully disperse
- the type of the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer 12 is not particularly limited as long as the through-hole 2 can be formed, and any of acrylic, polyester, polyurethane, rubber, silicone, etc. It may be.
- the pressure-sensitive adhesive may be any of an emulsion type, a solvent type, or a solventless type, and may be a crosslinked type or a non-crosslinked type.
- the thickness of the pressure-sensitive adhesive layer 12 is usually 1 to 300 ⁇ m, preferably about 5 to 100 ⁇ m, but can be appropriately changed according to the use of the pressure-sensitive adhesive sheet 1.
- the material of the release material 13 is not particularly limited, for example, a film made of a resin such as polyethylene terephthalate, polypropylene, polyethylene, or a foamed film thereof, or paper such as glassine paper, coated paper, laminated paper, A silicone-based, fluorine-based, or long-chain alkyl group-containing carbamate or other release agent can be used.
- a resin such as polyethylene terephthalate, polypropylene, polyethylene, or a foamed film thereof
- paper such as glassine paper, coated paper, laminated paper,
- a silicone-based, fluorine-based, or long-chain alkyl group-containing carbamate or other release agent can be used.
- the thickness of the release material 13 is usually about 10 to 250 ⁇ m, preferably about 20 to 200 ⁇ m. Further, the thickness of the release agent in the release material 13 is usually 0.05 to 5 ⁇ m, preferably 0.1 to 3 ⁇ m.
- the hole diameter of the through-hole 2 is preferably 0.1 to 300 ⁇ m through the base material 11 and the pressure-sensitive adhesive layer 12 (at all positions in the thickness direction of the base material 11 and the pressure-sensitive adhesive layer 12), and particularly preferably It is preferably 5 to 150 ⁇ m.
- the hole diameter of the through hole 2 is less than 0.1 ⁇ m, it is difficult for air or gas to escape, and when it exceeds 300 ⁇ m, the through hole 2 becomes conspicuous and the appearance of the pressure-sensitive adhesive sheet is impaired.
- a hole diameter exceeds 300 micrometers there exists a possibility that the mechanical strength of the adhesive sheet 1 may fall.
- the hole diameter on the surface 1A of the base material 11 is preferably 0.1 to 40 ⁇ m or less.
- the formation method of the through-hole 2 is not particularly limited, and can be formed by, for example, a water jet, a micro drill, a precision press, thermal processing, or the like.
- the through hole 2 is preferably formed by thermal processing, particularly preferably formed by laser thermal processing, and further formed by laser thermal processing using a carbon dioxide gas laser. It is preferable. When the through hole 2 is formed by such a processing method, the effect of preventing the increase in the inner diameter is clearly exhibited.
- the hole density of the through holes 2 is preferably 500 to 50,000 / 100 cm 2 , and more preferably 1,000 to 10,000 / 100 cm 2 . If the hole density of the through holes 2 is less than 500/100 cm 2 , air or gas may be difficult to escape. If the hole density of the through holes 2 exceeds 50,000 / 100 cm 2 , There is a possibility that the tensile strength and tear strength may be lowered.
- the through-hole 2 in the adhesive sheet 1 which concerns on this embodiment penetrates from the upper surface (base material surface 1A) of the base material 11 to the lower surface (adhesive surface 1B) of the adhesive layer 12, it peels.
- the material 13 may also be penetrated.
- the pressure-sensitive adhesive sheet 1 includes the release material 13, the present invention is not limited to this, and the release material 13 may not be provided. Furthermore, the magnitude
- the pressure-sensitive adhesive sheet 1 may be a tape-shaped material (adhesive tape) composed of only the base material 11 and the pressure-sensitive adhesive layer 12 and may be wound into a roll shape to be a wound body.
- the through-hole 2 has a shape in which expansion of the internal diameter of the pressure-sensitive adhesive sheet 1 is suppressed by the specific blending amount of the resin (B) and the pigment (C) in the base material 11. Therefore, after the problem which originates in the internal diameter expansion of the through-hole 2, ie, the opening part periphery of the through-hole 2 is dented, the external appearance of the adhesive sheet 1 falls, or the obtained adhesive sheet 1 is affixed on a to-be-adhered body.
- liquid such as water or gasoline adheres to the pressure-sensitive adhesive sheet 1
- the liquid enters the through-hole 2
- the appearance of the pressure-sensitive adhesive sheet 1 is caused by swelling of the through-hole 2 portion (peripheral portion of the through-hole 2). Can be prevented from occurring.
- the pressure-sensitive adhesive layer 12 is formed on the release treatment surface of the release material 13.
- a pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer 12 and, if desired, a coating agent further containing a solvent are prepared, and a roll coater, a knife coater, a roll knife coater, an air knife coater, and a die coater.
- coating machines such as a bar coater, a gravure coater, and a curtain coater.
- the base material 11 is pressure-bonded to the surface of the pressure-sensitive adhesive layer 12 to obtain a laminate composed of the base material 11, the pressure-sensitive adhesive layer 12 and the release material 13. And after peeling the peeling material 13 from the adhesive layer 12, as shown in FIG.3 (d), it penetrates into the laminated body which consists of the base material 11 and the adhesive layer 12, as shown in FIG.3 (e). The hole 2 is formed, and the release material 13 is pasted on the adhesive layer 12 again as shown in FIG.
- the formation of the through hole 2 is preferably performed by thermal processing.
- thermal processing examples include laser thermal processing, thermal processing with a hot needle, thermal processing with a molten hole, etc. Among them, fine through holes with good air release properties are easily formed with a desired hole density. Laser thermal processing is preferred. Even if the through-holes 2 are formed by these thermal processes, the internal diameter of the through-holes 2 is suppressed from increasing, and a melt is difficult to form, so that the pressure-sensitive adhesive sheet 1 having a good appearance can be obtained.
- Examples of the laser used for laser thermal processing include carbon dioxide (CO 2 ) laser, TEA-CO 2 laser, YAG laser, UV-YAG laser, YVO 4 laser, YLF laser, etc.
- a carbon dioxide laser is preferable in terms of cost and the like.
- the formation of the through hole 2 by laser thermal processing includes burst processing (burst mode) in which laser light is continuously irradiated to one place until one through hole 2 is formed, and laser light is sequentially applied to a plurality of places.
- burst processing burst mode
- cycle processing cycle mode
- the former is superior in terms of thermal efficiency, while the latter is superior in terms of reducing the thermal effect on the workpiece.
- the laser thermal processing may be performed in any mode.
- the hole diameter of the through hole 2 on the substrate surface 1A becomes smaller than the hole diameter on the pressure-sensitive adhesive surface 1B of the pressure-sensitive adhesive layer 12.
- the release energy 13 can be peeled once, and the laser output energy can be reduced by directly irradiating the adhesive layer 12 with a laser. If the output energy of the laser is small, it is possible to form a well-shaped through-hole 2 with less melt and thermal deformation due to heat.
- the pressure-sensitive adhesive layer 12 is applied and formed on the release material 13, and the formed pressure-sensitive adhesive layer 12 and the base material 11 are bonded together.
- the present invention is not limited to this.
- the pressure-sensitive adhesive layer 12 may be formed directly on the substrate 11 by coating.
- the adhesive sheet 1 is pressed against the adherend so that the adhesive surface 1B of the exposed adhesive layer 12 is in close contact with the adherend.
- the air between the adherend and the pressure-sensitive adhesive surface 1B of the pressure-sensitive adhesive layer 12 escapes from the through-hole 2 formed in the pressure-sensitive adhesive sheet 1 to the outside of the substrate surface 1A. It is difficult for air to be caught between the two, and it is possible to prevent air from being trapped. Even if air is trapped by the pasting operation and an air pool is formed, the air is re-pressurized around the air pool portion or the air pool portion including the air pool portion, so that the air is supplied from the through hole 2 to the substrate surface 1A. The air pocket disappears. Such removal of air pockets is possible even after a long time has elapsed since the adhesive sheet 1 was applied.
- Example 1 Using a twin-screw extrusion kneader (Technobel, KZW25TWIN-30MG-STM), 88% by mass of ethylene-methacrylic acid copolymer (Mitsui / DuPont Polychemical Co., Ltd., NUCREL N0903HC) as a polyolefin resin, and styrene Kneaded pellets were prepared from a mixture of 10% by mass of styrene-butadiene-styrene resin (manufactured by JSR, TR2250) as a resin and 2.0% by mass of carbon black (manufactured by Asahi Carbon Co., Ltd., SUNBLACK200) as a pigment.
- styrene Kneaded pellets were prepared from a mixture of 10% by mass of styrene-butadiene-styrene resin (manufactured by JSR, TR2250) as a resin and 2.0% by mass of carbon black (
- a film having a film thickness of 100 ⁇ m was produced from the kneaded pellets using an extrusion tester (manufactured by Toyo Seiki Seisakusho, Labo Plast Mill 30C150). The obtained film was used as the base material of the pressure-sensitive adhesive sheet.
- the composition of the materials constituting the substrate is shown in Table 1 (the same applies hereinafter).
- Acrylic solvent-based adhesive (on the release surface of a release material (Fintech, FPM-11, thickness: 175 ⁇ m) obtained by laminating both sides of a high-quality paper with polyethylene resin and one side with a silicone release agent
- the coating agent of Lintec Co., Ltd. (PK) was applied with a knife coater so that the thickness after drying was 30 ⁇ m, and dried at 90 ° C. for 1 minute.
- the above-mentioned film as a base material is pressure-bonded to the pressure-sensitive adhesive layer thus formed, and a protective sheet having a re-peelable pressure-sensitive adhesive layer on the surface of the base material (S-20, E-2035, thickness) : 60 ⁇ m) was applied to obtain a laminate having a four-layer structure.
- the release material was peeled off from the laminate, and the laminate was irradiated with a carbon dioxide laser from the adhesive layer side (Matsushita Industrial Equipment Co., Ltd., YB-HCS03 was used, 2-shot burst processing, frequency: 10000 Hz, pulse width: 25 ⁇ sec. (First shot) / 12 ⁇ sec (second shot)) Through holes were formed at a hole density of 2,500 holes / 100 cm 2 (hole pattern: parallel type, pitch interval 2 mm). And the said peeling material was crimped
- Example 2 Using a twin-screw extruder kneader (Technobel, KZW25TWIN-30MG-STM), ethylene-methacrylic acid copolymer (Mitsui / DuPont Polychemical, NUCREL N0903HC) as an olefin resin, 60% by mass, styrene Kneaded pellets were prepared from a mixture of 10% by mass of styrene-butadiene-styrene resin (manufactured by JSR, TR2250) as a resin and 30.0% by mass of carbon black (manufactured by Asahi Carbon Co., Ltd., SUNBLACK200) as a pigment. A pressure-sensitive adhesive sheet was produced in the same manner as in Example 1 except that this kneaded pellet was used.
- styrene Kneaded pellets were prepared from a mixture of 10% by mass of styrene-butadiene-styrene resin (manufactured
- Example 3 Using a twin-screw extrusion kneader (Technobel, KZW25TWIN-30MG-STM), ethylene-methacrylic acid copolymer (Mitsui / DuPont Polychemical, NUCREL N0903HC) as an olefin resin, 50% by mass, and styrene Kneaded pellets were prepared from a mixture of 48% by mass of styrene-butadiene-styrene resin (manufactured by JSR, TR2250) as a resin and 2.0% by mass of carbon black (manufactured by Asahi Carbon Co., Ltd., SUNBLACK200) as a pigment.
- a pressure-sensitive adhesive sheet was produced in the same manner as in Example 1 except that this kneaded pellet was used.
- Example 4 Using biaxial extrusion kneader (Technobel, KZW25TWIN-30MG-STM), ethylene-methacrylic acid copolymer (Mitsui / DuPont Polychemical, NUCREL N0903HC) 88% by mass as an olefin resin, acrylic Kneaded pellets were prepared from a mixture of 10% by mass of polymethyl methacrylate (manufactured by ALDRICH) as a resin and 2.0% by mass of carbon black (manufactured by Asahi Carbon Co., Ltd., SUNBLACK200) as a pigment. A pressure-sensitive adhesive sheet was produced in the same manner as in Example 1 except that this kneaded pellet was used.
- ALDRICH polymethyl methacrylate
- carbon black manufactured by Asahi Carbon Co., Ltd., SUNBLACK200
- Example 5 Using a biaxial extrusion kneader (Technobel, KZW25TWIN-30MG-STM), ethylene-methacrylic acid copolymer (Mitsui / DuPont Polychemical, NUCREL N0903HC) as an olefin resin, 60% by mass, acrylic Kneaded pellets were prepared from a mixture of 10% by mass of polymethyl methacrylate (produced by ALDRICH) as the resin and 30.0% by mass of carbon black (produced by Asahi Carbon Co., Ltd., SUNBLACK200) as the pigment.
- a pressure-sensitive adhesive sheet was produced in the same manner as in Example 1 except that this kneaded pellet was used.
- Example 6 Using a biaxial extrusion kneader (Technobel, KZW25TWIN-30MG-STM), ethylene-methacrylic acid copolymer (Mitsui / DuPont Polychemical, NUCREL N0903HC) as an olefin resin, 50% by mass, acrylic Kneaded pellets were prepared from a mixture of 48% by mass of polymethyl methacrylate (produced by ALDRICH) as a resin and 2.0% by mass of carbon black (produced by Asahi Carbon Co., Ltd., SUNBLACK200) as a pigment. A pressure-sensitive adhesive sheet was produced in the same manner as in Example 1 except that this kneaded pellet was used.
- ethylene-methacrylic acid copolymer Mitsubishi Chemical, ethylene-methacrylic acid copolymer (Mitsui / DuPont Polychemical, NUCREL N0903HC) as an olefin resin
- acrylic Kneaded pellets were prepared from a mixture of 48% by mass of poly
- Example 7 Using a twin-screw extrusion kneader (Technobel, KZW25TWIN-30MG-STM), ethylene-methyl methacrylate copolymer (Sumitomo Chemical Co., Ltd., ACLIFT WD301) 65% by mass as olefin resin, and styrene resin Kneaded pellets were prepared from a mixture of 35% by mass of styrene-butadiene-styrene resin (manufactured by JSR, TR2250) and 5.0% by mass of carbon black (manufactured by Asahi Carbon Co., Ltd., SUNBLACK200) as a pigment.
- a pressure-sensitive adhesive sheet was produced in the same manner as in Example 1 except that this kneaded pellet was used.
- Example 8 Using a twin-screw extrusion kneader (Technobel, KZW25TWIN-30MG-STM), 65% by mass of metallocene low-density polyethylene (Sumitomo Chemical Co., Sumikasen EP GT050) as olefin resin and styrene-butadiene as styrene resin
- a kneaded pellet was prepared from a mixture of 35% by mass of a styrene resin (manufactured by JSR, TR2250) and 5.0% by mass of carbon black (manufactured by Asahi Carbon Co., Ltd., SUNBLACK200) as a pigment.
- a pressure-sensitive adhesive sheet was produced in the same manner as in Example 1 except that this kneaded pellet was used.
- the pressure-sensitive adhesive sheet (size: 30 mm ⁇ 30 mm) from which the release material had been peeled was attached to a melamine-coated plate, and the appearance of the pressure-sensitive adhesive sheet surface was examined with the naked eye under an indoor fluorescent lamp.
- the distance from the eyes to the adhesive sheet was about 30 cm, and the angle at which the adhesive sheet was viewed was variously changed.
- ⁇ a case where the through-hole cannot be recognized by the naked eye
- ⁇ a case where the through-hole can be recognized by ⁇ .
- a pressure-sensitive adhesive sheet (size: 50 mm ⁇ 50 mm) from which the release material has been peeled is affixed to a melamine-coated plate, and a sunshine weather meter (Suga Test Instruments, S80) is used, with a black panel temperature of 63 ° C. and a bath temperature of 43 ° C.
- the appearance of the surface of the pressure-sensitive adhesive sheet after 2000 hours was visually inspected under a cycle condition of humidity 50% RH, irradiance 60 W / m 2 , and 1 cycle time 120 minutes (rainfall time 18 minutes).
- ⁇ the case where there is no abnormality in the appearance (crack, whitening, etc.) is indicated by ⁇
- the case where the appearance is abnormal is indicated by ⁇ .
- Air reservoir disappearance test 1 About the adhesive sheet obtained by the Example and the comparative example, the air clogging disappearance test was done as follows. The results are shown in Table 3.
- the pressure-sensitive adhesive sheet (size: 50 mm x 50 mm) from which the release material has been peeled is affixed to a flat melamine-coated plate so that an air pocket with a diameter of about 15 mm is formed, and the pressure-sensitive adhesive sheet is pressure-bonded with a squeegee. It was confirmed whether or not can be removed. As a result, the case where the air pocket was removed is represented by ⁇ , and the case where the air pool was not removed is represented by x.
- Air reservoir disappearance test 2 About the adhesive sheet obtained by the Example and the comparative example, the air clogging disappearance test was done as follows. The results are shown in Table 3.
- the pressure-sensitive adhesive sheet (size: 50 mm ⁇ 50 mm) from which the release material has been peeled is applied to a 70 mm ⁇ 70 mm melamine coated plate having a partial spherical recess (recess) with a diameter of 15 mm and a maximum depth of 1 mm (recess and pressure-sensitive adhesive sheet).
- the pressure-sensitive adhesive sheet was pressure-bonded with a squeegee to confirm whether the air pocket could be removed.
- the pressure-sensitive adhesive sheet follows the concave portion of the melamine-coated plate and the air pocket is removed, and the pressure-sensitive adhesive sheet does not follow the concave portion of the melamine-coated plate and the air pocket is not removed (the air pocket is (Including those remaining even if small) is represented by x.
- the pressure-sensitive adhesive sheet adhered to the melamine-coated plate as in (4) and allowed to stand for 24 hours is soaked in gasoline at room temperature for 0.5 hours, taken out of it and dried, and then the appearance in the same manner as in (4) above. Observed.
- ⁇ the case where the through-hole cannot be recognized by the naked eye
- ⁇ the case where the through-hole can be recognized by the naked eye, or the adhesive sheet itself having a marked appearance abnormality
- A-1 ethylene-methacrylic acid copolymer (Mitsui / DuPont Polychemical Co., Ltd., NUCREL N0903HC)
- A-2 ethylene-methyl methacrylate copolymer (manufactured by Sumitomo Chemical Co., Ltd., ACLIFT WD301)
- A-3 Metallocene low-density polyethylene (Sumitomo Chemical Co., Sumikasen EP GT050)
- B-1 Styrene-butadiene-styrene resin (manufactured by JSR, TR2250)
- B-2 Polymethyl methacrylate (manufactured by ALDRICH)
- B-3 Polycaprolactone (Daicel Chemical Industries, Plaxel H7)
- C Carbon black (Asahi Carbon Co., Ltd., SUNBLACK200)
- the pressure-sensitive adhesive sheets (Examples 1 to 8) using the base material meeting the conditions of the present invention are excellent in air bleeding and can recognize through holes with the naked eye.
- the internal diameter of the through hole was not enlarged, and a good appearance was exhibited. It was also excellent in weather resistance, gasoline resistance and mechanical strength.
- the pressure-sensitive adhesive sheets (Comparative Examples 1 to 5) using a substrate that did not meet the conditions of the present invention were inferior to the pressure-sensitive adhesive sheets of the examples in terms of weather resistance, gasoline resistance, or breaking strength.
- the diameter of the through hole on the substrate surface is small and the internal diameter is enlarged, and the air release property, gasoline resistance and weather resistance are inferior to those of the pressure-sensitive adhesive sheet of the example. It was.
- the pressure-sensitive adhesive sheet of the present invention is generally used when air accumulation or blistering is likely to occur in the pressure-sensitive adhesive sheet, for example, when the area of the pressure-sensitive adhesive sheet is large or when gas is generated from the adherend, under normal circumstances.
- it can be preferably used when a good appearance is required even in an environment where a liquid such as gasoline adheres, and further when weather resistance is required.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
Abstract
Description
〔粘着シート〕
図1は、本発明の一実施形態に係る粘着シートの断面図である。
上記実施形態に係る粘着シート1の製造方法の一例を図3(a)~(f)を参照して説明する。
粘着シート1を被着体に貼付する際には、まず、剥離材13を粘着剤層12から剥離する。
二軸押出混練機(テクノベル社製,KZW25TWIN-30MG-STM)を用いて、ポリオレフィン系樹脂としてエチレン-メタクリル酸共重合体(三井・デュポンポリケミカル社製,NUCREL N0903HC)88質量%と、スチレン系樹脂としてスチレン-ブタジエン-スチレン樹脂(JSR社製,TR2250)10質量%と、顔料としてカーボンブラック(旭カーボン社製,SUNBLACK200)2.0質量%との混合物から、混練ペレットを作製した。次いで、押出試験機(東洋精機製作所社製,ラボプラストミル30C150)を用い、上記混練ペレットから膜厚100μmのフィルムを作製した。得られたフィルムを粘着シートの基材とした。ここで、当該基材を構成する材料の配合を表1に示す(以下同じ)。
二軸押出混練機(テクノベル社製,KZW25TWIN-30MG-STM)を用いて、オレフィン系樹脂としてエチレン-メタクリル酸共重合体(三井・デュポンポリケミカル社製,NUCREL N0903HC)60質量%と、スチレン系樹脂としてスチレン-ブタジエン-スチレン樹脂(JSR社製,TR2250)10質量%と、顔料としてカーボンブラック(旭カーボン社製,SUNBLACK200)30.0質量%との混合物から、混練ペレットを作製した。この混練ペレットを使用する以外、実施例1と同様にして粘着シートを作製した。
二軸押出混練機(テクノベル社製,KZW25TWIN-30MG-STM)を用いて、オレフィン系樹脂としてエチレン-メタクリル酸共重合体(三井・デュポンポリケミカル社製,NUCREL N0903HC)50質量%と、スチレン系樹脂としてスチレン-ブタジエン-スチレン樹脂(JSR社製,TR2250)48質量%と、顔料としてカーボンブラック(旭カーボン社製,SUNBLACK200)2.0質量%との混合物から、混練ペレットを作製した。この混練ペレットを使用する以外、実施例1と同様にして粘着シートを作製した。
二軸押出混練機(テクノベル社製,KZW25TWIN-30MG-STM)を用いて、オレフィン系樹脂としてエチレン-メタクリル酸共重合体(三井・デュポンポリケミカル社製,NUCREL N0903HC)88質量%と、アクリル系樹脂としてポリメタクリル酸メチル(ALDRICH社製)10質量%と、顔料としてカーボンブラック(旭カーボン社製,SUNBLACK200)2.0質量%との混合物から、混練ペレットを作製した。この混練ペレットを使用する以外、実施例1と同様にして粘着シートを作製した。
二軸押出混練機(テクノベル社製,KZW25TWIN-30MG-STM)を用いて、オレフィン系樹脂としてエチレン-メタクリル酸共重合体(三井・デュポンポリケミカル社製,NUCREL N0903HC)60質量%と、アクリル系樹脂としてポリメタクリル酸メチル(ALDRICH社製)10質量%と、顔料としてカーボンブラック(旭カーボン社製,SUNBLACK200)30.0質量%との混合物から、混練ペレットを作製した。この混練ペレットを使用する以外、実施例1と同様にして粘着シートを作製した。
二軸押出混練機(テクノベル社製,KZW25TWIN-30MG-STM)を用いて、オレフィン系樹脂としてエチレン-メタクリル酸共重合体(三井・デュポンポリケミカル社製,NUCREL N0903HC)50質量%と、アクリル系樹脂としてポリメタクリル酸メチル(ALDRICH社製)48質量%と、顔料としてカーボンブラック(旭カーボン社製,SUNBLACK200)2.0質量%との混合物から、混練ペレットを作製した。この混練ペレットを使用する以外、実施例1と同様にして粘着シートを作製した。
二軸押出混練機(テクノベル社製,KZW25TWIN-30MG-STM)を用いて、オレフィン系樹脂としてエチレン-メタクリル酸メチル共重合体(住友化学社製,アクリフトWD301)65質量%と、スチレン系樹脂としてスチレン-ブタジエン-スチレン樹脂(JSR社製,TR2250)35質量%と、顔料としてカーボンブラック(旭カーボン社製,SUNBLACK200)5.0質量%との混合物から、混練ペレットを作製した。この混練ペレットを使用する以外、実施例1と同様にして粘着シートを作製した。
二軸押出混練機(テクノベル社製,KZW25TWIN-30MG-STM)を用いて、オレフィン系樹脂としてメタロセン低密度ポリエチレン(住友化学社製,スミカセンEP GT050)65質量%と、スチレン系樹脂としてスチレン-ブタジエン-スチレン樹脂(JSR社製,TR2250)35質量%と、顔料としてカーボンブラック(旭カーボン社製,SUNBLACK200)5.0質量%との混合物から、混練ペレットを作製した。この混練ペレットを使用する以外、実施例1と同様にして粘着シートを作製した。
二軸押出混練機(テクノベル社製,KZW25TWIN-30MG-STM)を用いて、オレフィン系樹脂としてエチレン-メタクリル酸共重合体(三井・デュポンポリケミカル社製,NUCREL N0903HC)60質量%と、スチレン系樹脂としてスチレン-ブタジエン-スチレン樹脂(JSR社製,TR2250)39質量%と、顔料としてカーボンブラック(旭カーボン社製,SUNBLACK200)1.0質量%との混合物から、混練ペレットを作製した。この混練ペレットを使用する以外、実施例1と同様にして粘着シートを作製した。
二軸押出混練機(テクノベル社製,KZW25TWIN-30MG-STM)を用いて、オレフィン系樹脂としてエチレン-メタクリル酸共重合体(三井・デュポンポリケミカル社製,NUCREL N0903HC)55質量%と、スチレン系樹脂としてスチレン-ブタジエン-スチレン樹脂(JSR社製,TR2250)5質量%と、顔料としてカーボンブラック(旭カーボン社製,SUNBLACK200)40.0質量%との混合物から、混練ペレットを作製した。この混練ペレットを使用する以外、実施例1と同様にして粘着シートを作製した。
二軸押出混練機(テクノベル社製,KZW25TWIN-30MG-STM)を用いて、オレフィン系樹脂としてエチレン-メタクリル酸共重合体(三井・デュポンポリケミカル社製,NUCREL N0903HC)40質量%と、スチレン系樹脂としてスチレン-ブタジエン-スチレン樹脂(JSR社製,TR2250)55質量%と、顔料としてカーボンブラック(旭カーボン社製,SUNBLACK200)5.0質量%との混合物から、混練ペレットを作製した。この混練ペレットを使用する以外、実施例1と同様にして粘着シートを作製した。
二軸押出混練機(テクノベル社製,KZW25TWIN-30MG-STM)を用いて、オレフィン系樹脂としてエチレン-メタクリル酸共重合体(三井・デュポンポリケミカル社製,NUCREL N0903HC)65質量%と、ポリエステル系樹脂であるポリカプロラクトン(ダイセル化学工業社製,プラクセルH7)30質量%と、顔料としてカーボンブラック(旭カーボン社製,SUNBLACK200)5.0質量%との混合物から、混練ペレットを作製した。この混練ペレットを使用する以外、実施例1と同様にして粘着シートを作製した。
二軸押出混練機(テクノベル社製,KZW25TWIN-30MG-STM)を用いて、オレフィン系樹脂としてエチレン-メタクリル酸共重合体(三井・デュポンポリケミカル社製,NUCREL N0903HC)94質量%と、スチレン系樹脂としてスチレン-ブタジエン-スチレン樹脂(JSR社製,TR2250)5質量%と、顔料としてカーボンブラック(旭カーボン社製,SUNBLACK200)1.0質量%との混合物から、混練ペレットを作製した。この混練ペレットを使用する以外、実施例1と同様にして粘着シートを作製した。
(1)貫通孔の形状観察
実施例および比較例で得られた粘着シートを貫通孔の部分で切断し、デジタル顕微鏡(キーエンス社製,VHX-200)を使用して、貫通孔の基材表面の直径、基材における最大直径、基材と粘着剤層との界面の直径および粘着面の直径を測定した。また、無作為に1cm2の範囲を5箇所選択し、貫通している孔の数を数え、1cm2あたりの平均貫通孔数を算出した。結果を表2に示す。
実施例および比較例で使用した基材について、フーリエ変換赤外分光光度計(パーキンエルマー社製,FT-IR Spectrum One)を使用したユニバーサルATR法により、使用レーザ波長領域(1087-962cm-1)における吸収ピーク(FT-IR吸収ピーク)の有無の測定を行った。結果を表2に示す。表2中、吸収のあったものを○、吸収のなかったものを×で表す。
実施例および比較例で使用した基材について、ヘイズメーター(日本電色工業製,NDH5000)を使用し、JIS K 7361に準拠して全光線透過率(%)の測定を行った。結果を表2に示す。
実施例および比較例で得られた粘着シートについて、以下のようにして外観検査を行った。結果を表3に示す。
実施例および比較例で得られた粘着シートについて、以下のようにして耐候性試験を行った。結果を表2に示す。
実施例および比較例で得られた粘着シートについて、以下のようにして空気溜まり消失性試験を行った。結果を表3に示す。
実施例および比較例で得られた粘着シートについて、以下のようにして空気溜まり消失性試験を行った。結果を表3に示す。
実施例および比較例で使用した基材について、精密万能試験機(島津製作所製,オートグラフAG-IS)を使用し、JIS K 7127に準拠して破断強度(MPa)の測定を行った。なお、破断強度の測定は、基材のマシン方向(MD)およびクロスマシン方向(CD)について行った。結果を表3に示す。
実施例および比較例で得られた粘着シートについて、以下のようにして耐ガソリン性試験を行った。結果を表3に示す。
・A-1:エチレン-メタクリル酸共重合体(三井・デュポンポリケミカル社製,NUCREL N0903HC)
・A-2:エチレン-メタクリル酸メチル共重合体(住友化学社製,アクリフトWD301)
・A-3:メタロセン低密度ポリエチレン(住友化学社製,スミカセンEP GT050)
・B-1:スチレン-ブタジエン-スチレン樹脂(JSR社製,TR2250)
・B-2:ポリメタクリル酸メチル(ALDRICH社製)
・B-3:ポリカプロラクトン(ダイセル化学工業社製,プラクセルH7)
・C:カーボンブラック(旭カーボン社製,SUNBLACK200)
11…基材
12…粘着剤層
13…剥離材
1A…基材表面
1B…粘着面
2…貫通孔
Claims (10)
- 基材と粘着剤層とを備え、一方の面から他方の面に貫通する貫通孔が複数形成されている粘着シートであって、
前記基材は、
ポリオレフィン系樹脂(A)50~88質量%と、
前記ポリオレフィン系樹脂(A)を除くスチレン系樹脂および/またはアクリル系樹脂(B)10~48質量%と、
顔料(C)2.0~30質量%と
を含有する樹脂組成物からなることを特徴とする粘着シート。 - 前記ポリオレフィン系樹脂(A)は、エチレン構造を構成単位として含むエチレン系共重合体であることを特徴とする請求項1に記載の粘着シート。
- 前記ポリオレフィン系樹脂(A)は、エチレン-(メタ)アクリル酸共重合体であることを特徴とする請求項1または2に記載の粘着シート。
- 前記顔料(C)は、炭酸ガスレーザの波長領域に吸収ピークを有することを特徴とする請求項1~3のいずれかに記載の粘着シート。
- 前記顔料(C)は、無機顔料群から選ばれる少なくとも1種であることを特徴とする請求項1~4のいずれかに記載の粘着シート。
- 前記顔料(C)は、カーボンブラックであることを特徴とする請求項1~5のいずれかに記載の粘着シート。
- 前記貫通孔は、熱加工により形成されていることを特徴とする請求項1~6のいずれかに記載の粘着シート。
- 前記熱加工は、レーザ熱加工であることを特徴とする請求項7に記載の粘着シート。
- 前記レーザ熱加工で使用するレーザが炭酸ガスレーザであることを特徴とする請求項8に記載の粘着シート。
- 前記基材の表面における前記貫通孔の孔径は、前記粘着剤層の粘着面における前記貫通孔の孔径よりも小さくなっていることを特徴とする請求項1~9のいずれかに記載の粘着シート。
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CN201180012274.7A CN102782071B (zh) | 2010-03-04 | 2011-02-24 | 粘着片 |
CA2792037A CA2792037A1 (en) | 2010-03-04 | 2011-02-24 | Pressure-sensitive adhesive sheet |
US13/581,859 US8980399B2 (en) | 2010-03-04 | 2011-02-24 | Pressure-sensitive adhesive sheet |
JP2012503101A JPWO2011108442A1 (ja) | 2010-03-04 | 2011-02-24 | 粘着シート |
GB1217690.5A GB2491329A (en) | 2011-02-24 | 2011-02-24 | Pressure sensitive adhesive sheet |
Applications Claiming Priority (2)
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JP2010-047367 | 2010-03-04 | ||
JP2010047367 | 2010-03-04 |
Publications (1)
Publication Number | Publication Date |
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WO2011108442A1 true WO2011108442A1 (ja) | 2011-09-09 |
Family
ID=44542095
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---|---|---|---|
PCT/JP2011/054190 WO2011108442A1 (ja) | 2010-03-04 | 2011-02-24 | 粘着シート |
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US (1) | US8980399B2 (ja) |
JP (1) | JPWO2011108442A1 (ja) |
CN (1) | CN102782071B (ja) |
CA (1) | CA2792037A1 (ja) |
WO (1) | WO2011108442A1 (ja) |
Cited By (1)
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CN103374302A (zh) * | 2012-04-20 | 2013-10-30 | 胶王股份公司 | 粘合剂粘结方法和由此制造的产品 |
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WO2013116779A1 (en) * | 2012-02-01 | 2013-08-08 | Futurewei Technologies, Inc. | System and method for organizing multimedia content |
US9933920B2 (en) | 2013-09-27 | 2018-04-03 | Sonos, Inc. | Multi-household support |
JP6214594B2 (ja) | 2014-04-25 | 2017-10-18 | 日東電工株式会社 | 偏光子、偏光板および画像表示装置 |
JP6215864B2 (ja) | 2014-04-25 | 2017-10-18 | 日東電工株式会社 | 偏光子、偏光板および画像表示装置 |
JP6713189B2 (ja) | 2014-06-27 | 2020-06-24 | 日東電工株式会社 | 長尺状の偏光フィルム積層体 |
JP6215261B2 (ja) | 2014-06-27 | 2017-10-18 | 日東電工株式会社 | 長尺状の偏光子、長尺状の偏光板および画像表示装置 |
JP6154856B2 (ja) * | 2014-06-27 | 2017-06-28 | 日東電工株式会社 | 長尺状の粘着フィルム |
TW201704177A (zh) * | 2015-06-10 | 2017-02-01 | 康寧公司 | 蝕刻玻璃基板的方法及玻璃基板 |
JP7163000B2 (ja) | 2015-06-25 | 2022-10-31 | 日東電工株式会社 | 非偏光部を有する偏光子 |
JP6422415B2 (ja) | 2015-09-28 | 2018-11-14 | 日東電工株式会社 | 偏光子、偏光板および画像表示装置 |
JP7058096B2 (ja) * | 2017-09-27 | 2022-04-21 | 日東電工株式会社 | 粘着フィルム |
CN111925753A (zh) * | 2020-07-20 | 2020-11-13 | 华南理工大学 | 一种烟用接装纸卷烟相变材料及其制备方法与应用 |
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Publication number | Publication date |
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US8980399B2 (en) | 2015-03-17 |
CN102782071A (zh) | 2012-11-14 |
US20130017363A1 (en) | 2013-01-17 |
CA2792037A1 (en) | 2011-09-09 |
JPWO2011108442A1 (ja) | 2013-06-27 |
CN102782071B (zh) | 2014-04-02 |
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