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WO2016181741A1 - Film protecteur de surface - Google Patents

Film protecteur de surface Download PDF

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Publication number
WO2016181741A1
WO2016181741A1 PCT/JP2016/061740 JP2016061740W WO2016181741A1 WO 2016181741 A1 WO2016181741 A1 WO 2016181741A1 JP 2016061740 W JP2016061740 W JP 2016061740W WO 2016181741 A1 WO2016181741 A1 WO 2016181741A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
sensitive adhesive
pressure
adhesive layer
protective film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/061740
Other languages
English (en)
Japanese (ja)
Inventor
克彦 堀米
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lintec Corp
Original Assignee
Lintec Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lintec Corp filed Critical Lintec Corp
Priority to JP2017517832A priority Critical patent/JP6747696B2/ja
Priority to CN201680026769.8A priority patent/CN108307636B/zh
Publication of WO2016181741A1 publication Critical patent/WO2016181741A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C09J201/00—Adhesives based on unspecified macromolecular compounds
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F99/00—Subject matter not provided for in other groups of this subclass

Definitions

  • the present invention relates to a surface protective film that is applied to the surface of various optical members and electronic members and used to protect the surface.
  • a method of previously uniting various electric components and optical components and mounting them on a substrate or the like is widely known.
  • a unitized optical member and electronic member there are many known units such as a motor unit including an imaging module, a camera lens unit, a communication module, a sensor module, and a vibrator.
  • These optical members and electronic members may be attached with a surface protective film in order to prevent the surface from being scratched or dust attached during processing, assembly, inspection, transportation, etc. is there.
  • the surface protective film is generally formed by providing a pressure-sensitive adhesive layer on one surface of a base material, and is adhered to an adherend such as an optical member or an electronic member by the pressure-sensitive adhesive layer so as to cover the surface of the adherend. In addition to protecting, it is peeled off from the adherend when it is no longer necessary to protect the surface.
  • an optical member such as an image sensor module has a light receiving portion formed of a lens or the like on the surface thereof. Therefore, in order to prevent the adhesive residue from being generated in the light receiving portion, the surface protective film may be formed with an uncoated portion without being applied with an adhesive on a portion that is applied to the light receiving portion (for example, Patent Document 1). reference).
  • the surface protective film is not provided with an uncoated portion, almost no space can be secured between the protective surface to be protected and the base material, so even if the portion to be protected protrudes slightly, The protrusion may not be used because it contacts the substrate.
  • a lens with strong power may have a lens surface that swells greatly and protrudes from the surface of the lens barrel that holds the lens.
  • the surface protective film of Patent Document 1 is used to protect such a lens. Difficult to do.
  • the camera module may be subjected to performance inspection after the assembly process by irradiating the light receiving unit with laser light or capturing a predetermined image such as a color bar with an image sensor.
  • the surface protective film is generally peeled off so that a laser beam or the like can be appropriately detected by the light receiving unit.
  • the surface of the lens barrel that holds the lens may be easily damaged, so that it is required to protect it in the inspection process.
  • the present invention has been made in view of the above-described problems.
  • a space is secured between the surface of the optical member or electronic member to be protected and the base material of the surface protective film, and the member to be protected is
  • Another object of the present invention is to provide a surface protective film that can be easily peeled off and pasted even if the surface protective film is small.
  • this invention makes it a subject to provide the surface protection film which can protect the surface of an optical member appropriately also in the test
  • the present invention provides the following (1) to (13).
  • a surface protective film that is applied to an optical member or an electronic member and used to protect the surface thereof A planar annular first film substrate, a first pressure-sensitive adhesive layer provided on one surface side of the first film substrate, and an annular interior on the other surface side of the first film substrate.
  • the cover film includes a second film base and a second pressure-sensitive adhesive layer provided on one surface side of the second film base, and the second pressure-sensitive adhesive layer.
  • the surface protective film according to (1) or (2) which is adhered to the first film base via (4)
  • the surface protective film according to (3) wherein the peel strength of the second pressure-sensitive adhesive layer is lower than the peel strength of the first pressure-sensitive adhesive layer.
  • the first pressure-sensitive adhesive layer is formed of an energy ray-curable pressure-sensitive adhesive
  • the surface protective film according to (4) wherein the peel strength of the second pressure-sensitive adhesive layer before irradiation with energy rays is lower than the peel strength of the first pressure-sensitive adhesive layer before irradiation with energy rays.
  • the second pressure-sensitive adhesive layer is formed of an energy ray-curable pressure-sensitive adhesive
  • (10) Surface protection comprising: a member selected from either an optical member or an electronic member; and the surface protective film according to any one of (1) to (9) attached to the surface of the member.
  • Member with film (11)
  • the member is an optical member including a lens and a lens barrel that holds the lens inside, The surface protection according to (10), wherein the surface protective film is attached to the surface of the optical member such that the first pressure-sensitive adhesive layer adheres to the lens barrel disposed on the surface of the optical member.
  • Member with film (12)
  • a surface protection method for protecting the surface of the optical member or electronic member by applying the surface protective film according to any one of (1) to (9) above to the surface of the optical member or electronic member.
  • the cover film of the surface protective film affixed to the surface of the optical member is peeled off from the first film substrate, and then the optical member is inspected by light incident on the optical member.
  • the surface protective film of the present invention has a structure in which a cover film is provided on a planar annular first film substrate, it is possible to secure a space between the cover film and the protective surface.
  • the predetermined portion of the protective member can be appropriately protected without contacting the surface protective film.
  • the surface protective film has a structure having a certain thickness due to the two layers of the first film substrate and the cover film, and it is easy to ensure rigidity, so that the pasting operation or the peeling operation is easily performed.
  • the cover film with light transmittance or making it peelable, the optical member and the electronic member can be appropriately protected even in the inspection process.
  • the surface protective film of the present invention is affixed to a member to be protected selected from an optical member or an electronic member, and used to protect the surface.
  • a member to be protected selected from an optical member or an electronic member, and used to protect the surface.
  • FIGS. 1 and 2 A surface protective film according to a first embodiment of the present invention is shown in FIGS.
  • the surface protective film 10 includes a first film substrate 11, a first pressure-sensitive adhesive layer 12, and a cover film 15.
  • the 1st film base material 11 exhibits a planar ring shape. That is, the 1st film base material 11 is planar shape, and has an annular shape that the inside becomes a hollow part.
  • the planar shape of the first film base 11 is not particularly limited as long as it is annular, and may be an annular shape as shown in FIG. An elliptical ring or the like may be used.
  • the 1st adhesive layer 12 is provided on 11 A of one surfaces of the 1st film base material 11, and is formed with an adhesive.
  • the surface protective film 10 is affixed to the member to be protected via the first pressure-sensitive adhesive layer 12.
  • the first pressure-sensitive adhesive layer 12 is usually applied to the entire surface of one surface 11 ⁇ / b> A of the first film substrate 11 and has the same annular shape as that of the first film substrate 11.
  • a laminate composed of the first film substrate 11 and the first pressure-sensitive adhesive layer 12 may be referred to as an annular protective film 13.
  • the cover film 15 covers the other hollow portion 18 of the annular film of the annular protective film 13 (that is, the first film substrate 11 and the first pressure-sensitive adhesive layer 12), and the other film film 11 has the other one.
  • the cover film 15 in the present embodiment is a pressure-sensitive adhesive sheet including a second film base material 16 and a second pressure-sensitive adhesive layer 17 provided on one surface 16A of the second film base material 16.
  • the film 15 is bonded to the first film substrate 11 via the second pressure-sensitive adhesive layer 17.
  • the cover film 15 is bonded to the first film substrate 11 via the second pressure-sensitive adhesive layer 17 in this way, so that the cover film 15 is attached to the first film substrate 11. And is peeled off.
  • releasable adhesion is an interface between the cover film 15 and the first film substrate 11 when the cover film 15 is manually peeled off from the surface protective film 10 attached to the member to be protected. It is separated and the cover film 15 is peeled off.
  • the 1st and 2nd film base materials 11 and 16 usually consist of a resin film.
  • the resin film known ones can be used. Polyethylene film, polypropylene film, polybutylene film, polybutadiene film, polymethylpentene film, polyvinyl chloride film, vinyl chloride copolymer film, polyethylene terephthalate film, poly Films such as butylene terephthalate film, polyurethane film, ethylene vinyl acetate film, ionomer resin film, ethylene / (meth) acrylic acid copolymer film, polystyrene film, polycarbonate film, and fluororesin film can be used. Moreover, the laminated film formed by laminating
  • the materials of the first and second film bases 11 and 16 may be the same as or different from each other.
  • first and second film bases 11 and 16 may each be appropriately provided with a coating layer or the like on one surface or both surfaces of the resin film.
  • the other surface 11B of the first film substrate 11 may be provided with a release agent layer as a release treatment surface.
  • the release agent layer is not particularly limited, but is formed from a release agent such as a silicone release agent, a fluorine release agent, an alkyd release agent, or a polyolefin release agent.
  • the thickness of the first film substrate 11 is usually 10 to 300 ⁇ m, preferably 30 to 150 ⁇ m.
  • the thickness of the second film substrate 16 is usually 1 to 150 ⁇ m, preferably 10 to 50 ⁇ m.
  • the cover film 15 may have light transmittance.
  • the cover film 15 When the cover film 15 has light transmittance, the cover film 15 is stuck on the first film substrate 11, and the light beam is incident on the protected member disposed on the lower side of the cover film 15 for inspection. Will be able to do.
  • the second film substrate 16 When the cover film 15 has light transparency, the second film substrate 16 is formed of a resin film having light transparency. Further, when the second pressure-sensitive adhesive layer 17 is provided on the entire surface of the one surface 16A of the second film substrate 16, the second pressure-sensitive adhesive layer 17 also needs to be formed of a light-transmitting material. .
  • the adhesive which forms the 1st and 2nd adhesive layers 12 and 17 is not specifically limited, Acrylic adhesive, rubber adhesive, silicone adhesive, polyester adhesive, urethane adhesive, polyolefin Examples thereof include, but are not limited to, and can be appropriately selected from any ones.
  • the pressure-sensitive adhesive is usually a main polymer such as acrylic resin, rubber, silicone resin, polyester resin, urethane resin, polyolefin resin, as well as a cross-linking agent, a pressure-sensitive adhesive agent, and an antioxidant as necessary. It comprises an adhesive composition containing components such as an agent, a plasticizer, a filler, an antistatic agent and a flame retardant.
  • the peeling force of the second pressure-sensitive adhesive layer 17 is lower than the peeling force of the first pressure-sensitive adhesive layer 12.
  • the peeling force of the first pressure-sensitive adhesive layer 12 it becomes easy to peel only the cover film 15 from the cyclic
  • the surface protection film 10 is irradiated with an energy ray. It is sufficient that the peel strength of the second pressure-sensitive adhesive layer 17 is lower than that of the first pressure-sensitive adhesive layer 12 either before or after irradiation.
  • the peeling force of the second pressure-sensitive adhesive layer 17 means a force required to peel the cover film 15 from the first film substrate 11.
  • the peeling force of the 1st adhesive layer 12 means the force required when peeling the cyclic
  • the peel strength of the first pressure-sensitive adhesive layer 12 is 0.1 to Preferably, the peel strength of the second pressure-sensitive adhesive layer 17 is 1.0 to 0.5 N / 25 mm, the first pressure-sensitive adhesive layer is 0.2 to 0.9 N / 25 mm, More preferably, the peel strength of the second pressure-sensitive adhesive layer 17 is 0.25 to 0.6 N / 25 mm.
  • the peeling force of the first pressure-sensitive adhesive layer 12 needs to be higher than the peeling force of the second pressure-sensitive adhesive layer 17.
  • the method for measuring the peeling force described above is specifically performed by the following method.
  • the surface protective film 10 where the hollow portion 18 is not present is cut to a width of 25 mm to obtain a sample, which is attached to the mirror surface of a silicon wafer as an adherend with a 2 kg roller in an environment of 23 ° C. and 50% relative humidity. .
  • the peeling force when peeling the cover film 15 from the annular protective film 13 at a tensile speed of 300 mm / min and 180 ° was measured, and the second adhesive The peeling force of the agent layer 17 is assumed.
  • peel force when the annular protective film 13 is peeled from the adherend is measured, and is defined as the peel force of the first pressure-sensitive adhesive layer 12.
  • peeling force is measured by what laminated
  • the material of the adhesive which comprises the 1st and 2nd adhesive layers 12 and 17 is used, for example. It should be different from each other. Further, the first and second pressure-sensitive adhesive layers 12 and 17 may have different thicknesses. Further, as described above, the other surface 11B of the first film substrate 11 may be a release treatment surface. Moreover, you may adjust peeling force combining these.
  • the peeling force before the energy ray irradiation of the second pressure-sensitive adhesive layer 17 may be lower than the peeling force before the energy ray irradiation of the first pressure-sensitive adhesive layer 12.
  • the cover film 15 is usually peeled before irradiation with energy rays, and the annular protective film 13 is peeled off from the member to be protected after irradiation with energy rays.
  • the annular protective film 13 can be attached to the member to be protected with a high peeling force, and the annular protective film 13 is peeled off. When doing so, it becomes possible to make the peeling force low. Therefore, the protective performance of the surface protective film 10 is improved, and when the cover film 15 is peeled off, the annular protective film 13 is prevented from being peeled off by mistake. Furthermore, it becomes difficult to produce poor peeling such as adhesive residue when the annular protective film 13 is peeled off.
  • the 2nd adhesive layer 17 is an energy-beam curable adhesive and non-energy-beam hardening.
  • the energy ray-curable pressure-sensitive adhesive is a material that cures when irradiated with energy rays and has a reduced peeling force.
  • the non-energy ray curable pressure-sensitive adhesive means a material that does not cure even when irradiated with energy rays and has no change in peeling force.
  • energy rays include ultraviolet rays and electron beams, but it is preferable to use ultraviolet rays.
  • the first pressure-sensitive adhesive layer 12 is formed of an energy ray-curable pressure-sensitive adhesive and the second pressure-sensitive adhesive layer 17 is formed of a non-energy ray-curable pressure-sensitive adhesive
  • the peeling force of the layer 12 is preferably 1 to 20 N / 25 mm, and more preferably 4 to 16 N / 25 mm.
  • the first pressure-sensitive adhesive layer 12 after energy beam irradiation is preferably 0.01 to 0.1 N / 25 mm, and more preferably 0.02 to 0.09 N / 25 mm.
  • the peeling force of the second pressure-sensitive adhesive layer 17 is preferably 0.05 to 0.5 N / 25 mm, and more preferably 0.1 to 0.4 N / 25 mm.
  • the peeling force of the second pressure-sensitive adhesive layer 17 is the same both before and after irradiation with energy rays.
  • the peel strength of the second pressure-sensitive adhesive layer and the peel strength of the first pressure-sensitive adhesive layer before energy beam irradiation are measured in the same manner as described in detail above.
  • the measurement of the peeling force of the 1st adhesive layer 12 after energy ray irradiation peels the cover film 15 from the sample stuck to the to-be-adhered body, Then, it irradiates with ultraviolet-rays in nitrogen atmosphere, It is performed by measuring the peeling force when peeling the annular protective film 13 from the adherend.
  • the details of other measurement conditions are the same as in the above measurement method.
  • the ultraviolet irradiation is performed with an illuminance of 230 mW / cm 2 and a light amount of 190 mJ / cm 2 using RAD-2000 m / 12 manufactured by Lintec Corporation as an ultraviolet irradiation apparatus. Note that the conditions for ultraviolet irradiation are the same in the methods for measuring the peeling force described below.
  • the peel strength of the second pressure-sensitive adhesive layer 17 after irradiation with energy rays is set to the first pressure-sensitive adhesive layer after irradiation with energy rays.
  • the peel strength may be lower than 12.
  • the first pressure-sensitive adhesive layer 12 is usually formed from a non-energy ray curable pressure-sensitive adhesive.
  • the cover film 15 can be easily peeled off from the first film substrate 11 by irradiating energy rays.
  • the peel strength of the second pressure-sensitive adhesive layer 17 may be higher, lower, or the same as the peel strength of the first pressure-sensitive adhesive layer 12 before the energy ray irradiation. However, it is preferably high.
  • the first pressure-sensitive adhesive layer 12 when the first pressure-sensitive adhesive layer 12 is formed of a non-energy ray-curable pressure-sensitive adhesive and the second pressure-sensitive adhesive layer 17 is formed of an energy-ray-curable pressure-sensitive adhesive, the first pressure-sensitive adhesive layer 12
  • the peeling force is preferably from 0.1 to 1.0 N / 25 mm, and more preferably from 0.2 to 0.9 N / 25 mm.
  • the peeling force of the first pressure-sensitive adhesive layer 12 is the same both before and after irradiation with energy rays.
  • the peel strength of the second pressure-sensitive adhesive layer 17 after irradiation with energy rays is preferably 0.01 to 0.1 N / 25 mm, more preferably 0.02 to 0.09 N / 25 mm.
  • peel strengths are measured by attaching a surface protective film to a silicon wafer, leaving it for 20 minutes, irradiating it with ultraviolet rays, and then either of the first and second adhesive layers described in detail above. However, it is measured similarly to the case where it is formed with a non-energy ray curable adhesive. The details of the other measurement conditions are the same as in the above measurement method.
  • the peeling force of the second pressure-sensitive adhesive layer 17 before energy beam irradiation is, for example, preferably 1 to 20 N / 25 mm, and more preferably 4 to 16 N / 25 mm.
  • the peeling force is measured by attaching the surface protective film 10 using an adhesive so that no interfacial peeling occurs between the first pressure-sensitive adhesive layer 12 and the adherend when the cover film 15 is peeled off. The method is the same as that described in detail above except that it is adhered to the substrate.
  • both of the first and second pressure-sensitive adhesive layers 12 and 17 may be formed of an energy ray-curable pressure-sensitive adhesive.
  • the peel strength of the second pressure-sensitive adhesive layer 12 is preferably 1 to 20 N / 25 mm, and more preferably 4 to 16 N / 25 mm.
  • the peel strength of the first pressure-sensitive adhesive layer is 0.1 to 1.0 N / 25 mm
  • the peel strength of the second pressure-sensitive adhesive layer 17 is 0.01 to 0.1 N / 25 mm.
  • the peel strength of the first pressure-sensitive adhesive layer is 0.2 to 0.9 N / 25 mm, and the peel strength of the second pressure-sensitive adhesive layer 17 is 0.02 to 0.09 N / 25 mm. preferable.
  • the peeling force of the first pressure-sensitive adhesive layer 12 is higher than the peeling force of the second pressure-sensitive adhesive layer 17.
  • all of the 1st and 2nd adhesive layer demonstrated in detail above are non-energy ray hardening type. It is measured in the same manner as when formed with an adhesive.
  • the peeling force after irradiation with energy rays is obtained by attaching a surface protective film to a silicon wafer, leaving it to stand for 20 minutes, irradiating with ultraviolet rays, and then measuring in the same manner as described above.
  • the energy beam curable pressure-sensitive adhesive is composed of an energy beam curable pressure-sensitive adhesive composition containing a component having a photopolymerizable unsaturated group.
  • an energy-beam curable adhesive composition containing a component having a photopolymerizable unsaturated group.
  • the X-type energy ray-curable pressure-sensitive adhesive composition is a composition in which a photopolymerizable unsaturated group is introduced into the main polymer (for example, acrylic polymer) of the pressure-sensitive adhesive itself (for example, in the side chain of the main polymer). It is.
  • the energy beam curable pressure-sensitive adhesive composition may be a Y-type energy beam curable pressure-sensitive adhesive composition.
  • the Y-type energy ray-curable pressure-sensitive adhesive composition contains an energy ray-polymerizable compound having a photopolymerizable unsaturated group separately from the main polymer (for example, an acrylic polymer). Further, the energy ray curable pressure-sensitive adhesive composition may be a combination of X type and Y type. That is, the energy ray curable pressure-sensitive adhesive composition may be one in which an energy ray polymerizable compound is blended and a photopolymerizable unsaturated group is introduced into at least a part of the main polymer. On the other hand, the non-energy ray curable pressure-sensitive adhesive is made of a normal pressure-sensitive adhesive that does not contain a component having a photopolymerizable unsaturated group.
  • the thickness of the first pressure-sensitive adhesive layer 12 is usually 3 to 50 ⁇ m, preferably 5 to 30 ⁇ m.
  • the thickness of the second pressure-sensitive adhesive layer 17 is usually 3 to 50 ⁇ m, preferably 5 to 30 ⁇ m.
  • a release sheet (not shown) may be attached to the surface of the first pressure-sensitive adhesive layer 12 of the surface protective film 10 and protected by the release sheet.
  • a release sheet one side of a resin film such as polyethylene terephthalate, polyethylene naphthalate, polypropylene, polyethylene, or paper substrate is a release agent such as a silicone release agent, a fluorine release agent, an alkyd release agent, or a polyolefin release agent.
  • a plurality of the surface protection films 10 may be provided on one release sheet having a size sufficiently larger than the surface protection film 10.
  • the surface protective film 10 is preferably of a small size so that it can be appropriately used as a protective film for a miniaturized electronic member or optical member.
  • the film area of the surface protection film 10 is preferably 20 cm 2 or less.
  • the lower limit of the film area is not particularly limited, but is preferably 0.05 cm 2 or more from the viewpoint of practicality and workability.
  • the film area is more preferably from 0.1 to 10 cm 2 , further preferably from 10 to 80 mm 2 .
  • a film area means the area of the cover film 15, for example, when a part of cover film has an unevenness
  • the cover film 15 is provided so as to cover the hollow portion 18, so that the surface protective film 10 is attached to the protected member via the first pressure-sensitive adhesive layer 12. Then, the inner part of the annular protective film 13 can be a sealed space. Therefore, the part to which the first pressure-sensitive adhesive layer 12 on the surface of the protected member is bonded and the inner part thereof are protected by the surface protective film 10, and dust adheres to them or comes into contact with the outside and is damaged. It is prevented. And since the space (hollow part 18) of the inner part of the cyclic
  • the member to be protected disposed at the position corresponding to the hollow portion 18 is protected by the surface protective film 10 without contacting the first pressure-sensitive adhesive layer 12. Therefore, it is possible to more appropriately protect the member to be protected by arranging a precision component such as a lens, which may cause a problem or a decrease in performance when in contact with the adhesive, at a position corresponding to the hollow portion 18.
  • the surface protective film 10 has a certain thickness and rigidity due to the two-layer base material (that is, the first and second film base materials 11 and 16). Work becomes easy.
  • the cover film 15 is adhered to the annular protective film 13 (first film substrate 11) so as to be peelable. Therefore, the cover film 15 may be peeled off from the annular protective film 13 (first film substrate 11) after the surface protective film 10 is attached to the member to be protected via the first pressure-sensitive adhesive layer 12. Is possible. That is, in this embodiment, it is possible to leave the annular protective film 13 on the protected member while removing the cover film 15. Therefore, even after the cover film 15 is peeled off, the annular protective film 13 can continue to protect a part of the protected member.
  • the optical member to be protected when the member to be protected is an optical member, the optical member may be inspected by a light beam incident on the optical member from the outside. A part of the light beam is refracted, reflected, absorbed, or the like by the film 15, and the inspection may be hindered.
  • the inspection of the optical member by the cover film 15 is prevented by performing the inspection with the cover film 15 peeled off from the annular protective film 13. On the other hand, since the annular protective film 13 is left on the optical member, a part of the optical member continues to be protected by the annular protective film 13.
  • the cover film 15 when the cover film 15 has light transmittance, the optical member is inspected by the light incident on the optical member through the cover film 15 without peeling the cover film 15. Also good. Furthermore, in the case of an inspection that requires high accuracy, the cover film 15 is peeled off and the inspection is performed. In the case of a simple inspection, the cover film 15 is not peeled off and the inspection is performed. Whether or not the cover film 15 is peeled may be determined.
  • the second pressure-sensitive adhesive layer 17 is provided on the entire surface of one surface 16 ⁇ / b> A of the second film substrate 16, but on the one surface 16 ⁇ / b> A of the second film substrate 16. It may be provided in a part.
  • the second pressure-sensitive adhesive layer 17 may have an annular shape corresponding to the shape of the first film substrate 11 as shown in FIG. Since the cover film 15 has such a shape, the pressure-sensitive adhesive layer is not disposed at a position corresponding to the hollow portion 18. Therefore, various parts of the protected member arranged at a position corresponding to the hollow portion 18 are less likely to be contaminated by the adhesive.
  • the second pressure-sensitive adhesive layer 17 is an energy ray-curable pressure-sensitive adhesive
  • the pressure-sensitive adhesive layer is irradiated with energy rays on the entire surface of the second pressure-sensitive adhesive layer 17 at a position corresponding to the hollow portion 18. May be cured to reduce the adhesive strength. According to such a configuration, various parts of the protected member disposed at a position corresponding to the hollow portion 18 are less likely to be contaminated by the adhesive.
  • the cover film 15 may be provided with a pseudo adhesive layer instead of the second pressure-sensitive adhesive layer 17. That is, the cover film 15 may be bonded to the first film base material 11 by the pseudo adhesive layer, and the first film base material 11 and the pseudo adhesive layer may have a pseudo adhesive property.
  • the pseudo-adhesive property means a property that can be easily peeled off at the interface between the first film substrate 11 and the pseudo-adhesive layer and cannot be easily re-adhered between the peeled layers after being peeled off.
  • the pseudo adhesive layer is formed of, for example, a thermoplastic resin such as a polyolefin resin.
  • the cover film 15 (laminated body of the second film base material 16 and the pseudo adhesive layer) is also the first film base material 11. Can be easily peeled off. Since the other structure is the same as that of the second pressure-sensitive adhesive layer 17, its description is omitted.
  • the surface protective film of the first embodiment is prepared by, for example, preparing two sheets of a pressure-sensitive adhesive sheet including a film base material and a pressure-sensitive adhesive layer provided on one surface of the film base material, and removing one pressure-sensitive adhesive sheet. It can be manufactured by processing to form an annular protective film 13 and laminating the other adhesive sheet as a cover film on the annular protective film 13. In addition, when one of the pressure-sensitive adhesive sheets is punched, only the inner contour (that is, only the hollow portion) is formed, and after the other pressure-sensitive adhesive sheet is laminated, the two pressure-sensitive adhesive sheets are further punched, An outer contour of the surface protective film may be formed.
  • the release sheet may be used as it is as a release sheet for protecting the surface protective film.
  • a pseudo adhesive layer is provided instead of the second adhesive layer, a sheet made of a film substrate and a pseudo adhesive layer is laminated on the punched adhesive sheet (for example, heat It is possible to produce a surface protective film by pressure bonding.
  • FIG. 4 shows a surface protective film according to the second embodiment of the present invention.
  • the cover film 15 is configured by the second film base 16 and the second pressure-sensitive adhesive layer 17 (or pseudo adhesive layer).
  • the second pressure-sensitive adhesive is used.
  • the layer 17 (and the pseudo adhesive layer) is omitted, and the cover film 15 is composed of the second film substrate 16.
  • the second film substrate 16 (cover film 15) is bonded so as to be integrated with the first film substrate 11.
  • the first and second film bases 11 and 16 are both made of a thermoplastic resin and may be fused by thermocompression bonding.
  • the 2nd film base material 16 may be adhere
  • the other configurations in the second embodiment are the same as those in the first embodiment, and are therefore omitted.
  • the part to which the annular protective film 13 of the member to be protected and the inner part thereof are protected by the surface protective film 10 and dust adheres It is prevented from being damaged by touching the outside. Furthermore, since the pressure-sensitive adhesive layer is not provided above the hollow portion 18, it is difficult to cause a problem caused by the pressure-sensitive adhesive coming into contact with a protected member disposed at a position corresponding to the hollow portion 18. Moreover, since the surface protective film 10 of this embodiment has the cyclic
  • the surface protection film 10 of this embodiment cannot leave only the cover film 15 leaving the cyclic
  • the surface protective film of the second embodiment is formed by removing a pressure-sensitive adhesive sheet including a film base material and a pressure-sensitive adhesive layer provided on one surface of the film base material, thereby forming an annular protective film 13. It can be manufactured by thermocompression bonding a resin film as a cover film on the annular protective film 13. Moreover, you may adhere
  • the adhesive sheet is punched, only the inner contour (that is, only the hollow portion) is formed, and after the cover film is bonded, the punching process is further performed. And you may form the outer side outline of a surface protection film.
  • the pressure-sensitive adhesive sheet may be one in which a release sheet is further attached to the pressure-sensitive adhesive layer surface.
  • an image pickup module for example, a camera module
  • an image sensor such as one or two or more lenses and an image sensor such as a CCD and a CMOS are housed in a housing or a package
  • a lens unit in which a plurality of lenses are held in a lens barrel and housed in a housing or a package as necessary
  • a light emitting element unit having a light emitting element such as an LED
  • a motor unit such as a vibrator
  • the optical member refers to an optical component that receives or emits light, or includes an optical component that transmits light.
  • an imaging module, a lens unit, a light emitting element unit, a communication module that transmits or receives an optical signal An example of the optical member is an optical sensor module.
  • the electronic member usually includes at least a part of an electric circuit and includes an electronic component that transmits or receives an electric signal, an electronic component that processes an electric signal, an electronic component that operates by an electric signal or electric power, and the like.
  • a motor unit such as an imaging module, a light emitting element unit, and a vibrator, a communication module that transmits or receives an electrical signal, various sensor modules, and the like are specific examples of the electronic member.
  • a communication module, an optical sensor module, an imaging module, a light emitting element unit, and the like that transmit or receive optical signals are members that are both electronic members and optical members.
  • the optical member or the electronic member is, for example, one in which the electronic component or the optical component is housed in a package or a housing or supported by a support member.
  • a part of electronic component or optical component is exposed on the surface, and the surface protection film is used, for example, to protect the exposed component.
  • the surface protective film 10 is used for affixing to the surface of an optical member or an electronic member to protect the surface.
  • an optical member or an electronic member hereinafter also simply referred to as a member with a surface protective film
  • the surface protection film 10 protects the surface of an optical member or an electronic member in these processes.
  • the member with the surface protective film may be heated in the process such as processing, attachment, assembly, inspection, or conveyance described above.
  • the heating temperature at that time is not particularly limited, but is about 60 to 200 ° C., preferably about 70 to 150 ° C.
  • heating is performed in order to harden the thermosetting adhesive agent for attaching an optical member or an electronic member (member with a surface protection film) to another member, for example.
  • the inspection step performs an inspection using a light beam incident on the optical member. Specifically, it is preferable that the optical member is inspected by irradiating the optical member with a laser or performing imaging with an imaging sensor of the optical member.
  • the surface protective film 10 is peeled off from the member to be protected when it is not necessary to protect the member to be protected.
  • the surface protective film 10 is integrated with the cover film 15 and the annular protective film 13 when the cover film 15 and the first film substrate 11 are integrally formed as in the second embodiment. Thus, it is peeled off from the protected member.
  • the cover film 15 and the annular protective film 13 may be removed simultaneously, but separately. It is preferably removed.
  • the inspection is preferably performed after the cover film 15 is peeled off from the first film base material 11 and removed. . According to such a configuration, the optical member can be appropriately protected by the cover film 15 and the annular protective film 13 in each step before the inspection.
  • the inspection process it is possible to protect a part of the optical member with the annular protective film 13 without inhibiting the inspection with the cover film 15 and also during the inspection.
  • the application of the surface protective film 10 to the member to be protected and the peeling of the cover film 15, the annular protective film 13 and the surface protective film 10 are usually performed manually. These operations may be performed by directly gripping the surface protective film, the cover film or the like with a finger, or may be performed by gripping with a tool such as tweezers.
  • the first and second pressure-sensitive adhesive layers 12 and 17 are formed of an energy ray-curable pressure-sensitive adhesive, the light energy is removed before the cover film 15, the annular protective film 13, or the surface protective film 10 is peeled off. What is necessary is just to irradiate the surface protective film 10 suitably with a line
  • the surface protective film 10 is preferably used for protecting the light receiving part of an optical member such as an imaging module. Specifically, the surface protective film 10 is arranged so that the light receiving part is disposed at a position corresponding to the hollow part 18. It is preferable that the protective film 10 is stuck on the surface of the optical member. As a result, the light receiving portion is protected without adhering to the first pressure-sensitive adhesive layer 12, and therefore, adhesive residue or the like hardly occurs in the light receiving portion. Further, even when the light receiving portion protrudes, it is possible to appropriately protect the light receiving portion.
  • the light receiving portion is a portion that receives light provided on the surface of the optical member in order to guide light to the inside of the optical member (for example, an image sensor). In the configuration of FIG. It becomes a light receiving part.
  • the surface protective film 10 is particularly suitable when applied to an optical member having a lens and a lens barrel for holding the lens.
  • an example in which the surface protective film 10 of the first embodiment is applied to an imaging module having a lens and a lens barrel will be described with reference to FIG.
  • the following description demonstrates the example at the time of a surface protection film affixing on an imaging module, the case where it applies to another optical member is also the same.
  • FIG. 5 is a schematic diagram illustrating a state where the surface protection film 10 of the first embodiment is attached to the imaging module to protect the imaging module surface.
  • the imaging module 20 shown in FIG. 5 includes one or more lenses 21, an imaging sensor (not shown) that receives light through the lenses 21, and a lens barrel 22 that holds the lenses 21 inside.
  • the surface of the lens barrel 22 and the surface of the lens 21 are arranged so as to be exposed on one surface 20A of the imaging module 20.
  • the surface protective film 10 is affixed to one surface of the imaging module 20 via the first pressure-sensitive adhesive layer 12. Specifically, the first pressure-sensitive adhesive layer 12 is bonded to the surface of the lens barrel 22. Is done. By bonding the first pressure-sensitive adhesive layer 12 onto the lens barrel 22, the surface of the lens 21 is disposed at a position corresponding to the hollow portion 18. Therefore, the lens 21 can be protected by the surface protective film 10 without directly contacting the first pressure-sensitive adhesive layer 12 or the cover film 15. On the other hand, the lens barrel 22 is protected by the first pressure-sensitive adhesive layer 12 and the first film substrate 11 (annular protective film 13) laminated thereon.
  • the imaging module 20 (optical member) having the lens 21 and the lens barrel 22 inspects the functions of the imaging sensor and the like by the light rays incident on the optical member from the outside via the lens 21 as described above.
  • the cover film 15 is preferably peeled off from the annular protective film 13 and inspected. This is because the inspection can be performed without being obstructed by the cover film 15. Further, during the inspection, since the annular protective film 13 is stuck on the lens barrel 22, the surface of the lens barrel 22 is prevented from being damaged.
  • a process of attaching the imaging module (optical member) to another member is performed.
  • the attachment process and the like not only the lens barrel 22 but also the surface of the lens 21 is applied. It will be protected by the surface protective film 10. Accordingly, dust and the like are likely to adhere to the lens surface in the mounting step before the inspection process, but the imaging module can be appropriately protected from such dust and the like.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

L'invention concerne un film protecteur de surface 10 fixé à un élément optique ou à un élément électronique et utilisé pour protéger la surface de celui-ci, le film protecteur de surface étant pourvu d'un premier substrat de film annulaire plat 11, d'une première couche adhésive 12 disposée sur un côté face 11A du premier substrat de film 11, et d'un film de couverture 15 disposé de manière à couvrir une partie creuse d'un intérieur annulaire sur l'autre face du premier substrat de film 11.
PCT/JP2016/061740 2015-05-13 2016-04-11 Film protecteur de surface Ceased WO2016181741A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2017517832A JP6747696B2 (ja) 2015-05-13 2016-04-11 表面保護フィルム
CN201680026769.8A CN108307636B (zh) 2015-05-13 2016-04-11 表面保护膜

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-098349 2015-05-13
JP2015098349 2015-05-13

Publications (1)

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WO2016181741A1 true WO2016181741A1 (fr) 2016-11-17

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PCT/JP2016/061740 Ceased WO2016181741A1 (fr) 2015-05-13 2016-04-11 Film protecteur de surface

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JP (1) JP6747696B2 (fr)
CN (1) CN108307636B (fr)
TW (1) TWI696682B (fr)
WO (1) WO2016181741A1 (fr)

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WO2022118499A1 (fr) * 2020-12-04 2022-06-09 日東電工株式会社 Feuille adhésive
JP2022170028A (ja) * 2021-04-28 2022-11-10 藤森工業株式会社 表面保護フィルム、及びそれが貼着された光学部品

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DE102018210680A1 (de) * 2018-06-29 2020-01-02 Trumpf Laser Gmbh Optisches Element mit abziehbarer Schutzfolie
CN109264182B (zh) * 2018-09-28 2024-07-26 Oppo广东移动通信有限公司 保护膜及其制作方法
CN111086303B (zh) * 2018-10-23 2025-02-11 宁波舜宇光电信息有限公司 用于摄像模组的保护膜及其制造方法
CN109337600B (zh) * 2018-11-16 2021-01-19 深圳市飞荣达科技股份有限公司 胶面局部无胶的单面胶及其生产方法
WO2021033571A1 (fr) 2019-08-16 2021-02-25 日東電工株式会社 Élément de couvercle et ensemble de fourniture d'élément pourvu de ce dernier
KR20220026855A (ko) * 2020-08-26 2022-03-07 엘지이노텍 주식회사 보호 시트 및 이를 포함하는 카메라 모듈
CN114125203B (zh) * 2020-08-28 2024-03-08 宁波舜宇光电信息有限公司 光学镜头及其制备方法、摄像模组和电子设备
KR102744716B1 (ko) * 2022-10-13 2024-12-19 신진엠텍(주) 렌즈보호필름 및 이의 제조방법

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TW201706376A (zh) 2017-02-16
CN108307636B (zh) 2021-04-23
JP6747696B2 (ja) 2020-08-26
JPWO2016181741A1 (ja) 2018-03-01
CN108307636A (zh) 2018-07-20
TWI696682B (zh) 2020-06-21

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