JP5855505B2 - Rust prevention method - Google Patents

Description

  The present invention relates to a rust prevention method.

  Conventionally, before delivery of automobiles, it is possible to prevent rust from occurring on tire wheels, brake discs, etc., or to attach a resin rust prevention cover to the wheels to prevent scratches or protect the wheels. It has been done widely. However, such a rust-proof cover has a problem that the manufacturing cost is high. Therefore, in recent years, attempts have been made to attach a lower-cost rust-proof film to the outer surface of the wheel with an adhesive or the like (see, for example, Patent Document 1).

  However, the conventional rust preventive film is one that is stuck to the wheel while being peeled from the release film one by one. For this reason, since the worker reciprocates between the automobile flowing on the line and the stock position of the anticorrosive film, the position of the wheel to be attached is different every time, so the flow line of the worker becomes complicated and the work efficiency is improved. There was a problem of being extremely bad.

  Furthermore, if the rust-proof film is thin and flexible, the rust-proof film follows the open surface of the wheel having a complicated surface shape and does not easily fall off in a stationary state. However, the thin and flexible rust-proof film is difficult to apply by hand, and it is very difficult for the operator to wrinkle or bend and the adhesive surfaces stick together.

JP 2010-143350 A

  An object of the present invention is to provide a rust-preventing method that has high work efficiency for attaching a wheel-sticking film and can effectively prevent rusting of a disc brake of an automobile.

Such an object is achieved by the present invention described in (1) and (2) below.
(1) A wheel sticking film having a base film and an adhesive layer provided on the base film, and covering the opening of the wheel of the tire to prevent the disc brake of the automobile from being rusted. Rusting method,
A first step of preparing a laminate in which a plurality of the film for affixing the wheel is laminated;
A second step of sticking the pressure-sensitive adhesive surface where the pressure-sensitive adhesive layer of the laminate is exposed to the wheel;
Have a, a third step of peeling the configured laminate wearing film bonded plurality of the wheel other than the wheel sticking film in which the pressure-sensitive adhesive layer on the wheel are in contact,
The thickness of the laminate, so as to always be 1mm or more, antirust method characterized by have a step of adding a plurality of said wheel sticking film to the laminate.

(2) anti-rust method of item (1) repeating the second step and the third step.

  ADVANTAGE OF THE INVENTION According to this invention, the work efficiency which sticks a wheel sticking film is high, and the film for wheel protection which can prevent effectively that the disc brake of a motor vehicle rusts can be provided.

It is process drawing which shows suitable embodiment of the rust prevention method of this invention.

Hereinafter, the rust prevention method of the present invention will be described in detail.
The rust prevention method of the present invention is a wheel sticking film having a base film and an adhesive layer formed on the base film, and covers the opening of a wheel of a tire, thereby rusting a disc brake of an automobile. The first step of preparing a laminated body in which a plurality of films for laminating a wheel are laminated and the adhesive surface where the adhesive layer of the laminated body is exposed are adhered to the wheel. And a third step of peeling a laminate composed of a plurality of the above-mentioned wheel sticking films other than the wheel sticking film whose pressure-sensitive adhesive layer is in contact with the wheel.

  By the way, as a rust prevention method for preventing the disc brake of a conventional automobile from being rusted, one piece of the film for attaching the wheel attached to the release film is peeled off from the release film and attached to the wheel. There was a problem that work efficiency was reduced.

  On the other hand, in this invention, since it has a process as mentioned above, since it can stick a wheel sticking film to a wheel, without peeling piece by piece from a release film, work efficiency is improved. Can be made. Moreover, since a release film is unnecessary, it is advantageous also in cost. Moreover, since the film for attaching a wheel is relatively thin, if it is attempted to apply one by one, the film for attaching a wheel may be waved or wrinkled, resulting in a decrease in work efficiency. By sticking in the state of a laminated body, since the rigidity of what to stick itself can be made constant, it can stick to a wheel easily. As a result, work efficiency can be further improved.

Hereinafter, preferred embodiments of the rust prevention method of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a process diagram showing a preferred embodiment of the rust prevention method of the present invention.

  The wheel sticking film 1 used in this embodiment includes a base film and an adhesive layer formed on the base film, and is supplied from a “laminated product” in which a predetermined number of wheel sticking films 1 are laminated. Is done.

  Moreover, in this embodiment, the case where the wheel sticking film 1 is stuck with respect to the wheel of the tire which flows sequentially in an automobile production line is mentioned as an example, and is demonstrated. In the figure, the white arrow indicates the direction in which the line flows.

(First step)
First, as shown to Fig.1 (a), several sheets of wheel sticking films 1 are peeled from "laminated product", and the laminated body 10 which the wheel sticking films 1 laminated | stacked is prepared.

(Second step)
Next, as shown in FIG.1 (b), the adhesive surface in which the adhesive layer of the laminated body 10 is exposed is stuck on a wheel.

(Third step)
Next, as shown in FIG.1 (c), the laminated body 10 'comprised with the other several wheel sticking film 1 is peeled, leaving the one wheel sticking film 1 stuck to the wheel. .

(Second step)
Next, the pressure-sensitive adhesive surface of the laminated body 10 ′ is adhered to the wheel of the next tire flowing through the line.

(Third step)
Next, in the same manner as described above, the laminated body constituted by the other plurality of wheel sticking films 1 is peeled off, leaving the one wheel sticking film 1 stuck to the wheel.

  Further, the second step and the third step are repeated. Thereby, the wheel sticking film 1 can be efficiently stuck to a plurality of wheels.

  When repeating the sticking of the wheel sticking film 1, when the number of the wheel sticking films 1 constituting the laminate is reduced, another laminate (a laminate constituted by a plurality of wheel sticking films 1). The process of combining with the body) can be additionally performed. Thereby, a number of sheets can be made into a state more than fixed, and sticking work can be performed more efficiently. Moreover, since it is a simple process of adding, it can prevent effectively that work efficiency falls.

  Such a process is preferably performed so that the thickness of the laminate is always 1 mm or more. Thereby, the rigidity of laminated body itself can be made more suitable, and a sticking operation | work can be performed still more efficiently.

  In addition, in the said description, although the case where the laminated body of the wheel sticking film 1 of 1 type (a kind with the same size and material) was used was not limited to this, multiple types of wheel sticking from which a size and a material differ. A plurality of laminated bodies in which films are laminated may be prepared, and may be configured to be used properly depending on the vehicle type flowing through the line.

  Further, in the above description, the case where only the tire is flowing through the line has been described. However, the present invention is not limited to this. For example, an automobile to which a tire is attached is flowing through the line, and a wheel sticking film is attached to the wheel of the tire. It can also be applied when 1 is pasted.

《Wheel pasting film》
Next, a wheel sticking film that can be suitably applied to the rust prevention method of the present invention will be described.

  The wheel sticking film includes a base film and an adhesive layer formed on the base film.

  The base film has a function of preventing the wheel from being scratched and preventing moisture from entering through the opening of the wheel and rusting the brake disc.

  In order to affix the base film on the three-dimensional wheel, it is required that the base film has a low Young's modulus, preferably 500 MPa or less, and more preferably 400 MPa or less. On the other hand, rigidity is required from the viewpoint of workability, and the Young's modulus is preferably 100 MPa or more, more preferably 200 MPa or more.

  The material of the base film is low density polyethylene, linear low density polyethylene, medium density polyethylene, high density polyethylene, homopolypropylene, random polypropylene, olefinic thermoplastic elastomer, ethylene-vinyl acetate copolymer, soft polyvinyl chloride. Etc. These single-layer films may be used, or a laminated film having two or more layers may be used.

  The thickness of the base film is not particularly limited, but is usually preferably in the range of 20 to 200 μm, particularly preferably in the range of 30 to 100 μm.

  The base film preferably contains an ultraviolet absorber so that the spectral transmittance in the wavelength region of 300 to 380 nm is 0 to 20%. As a content rate of a ultraviolet absorber, it is preferable to make 0.005-2 mass parts contain in 100 mass parts of base films. By containing the ultraviolet absorber, the weather resistance of the substrate itself can be improved, the pressure-sensitive adhesive layer can be protected from ultraviolet rays, and the wheel protective film 1 can be peeled without any adhesive residue on the wheel.

  Specific examples of the ultraviolet absorber include triazine, benzophenone, benzotriazole, and cyanoacrylate ultraviolet absorbers. These ultraviolet absorbers can be used alone or in combination of two or more.

  Moreover, you may contain weather resistance adjuvants, such as a light stabilizer and antioxidant, with an ultraviolet absorber.

  A release agent layer may be provided on the surface of the base film opposite to the surface on which the pressure-sensitive adhesive layer is provided. By providing the release agent layer on the base film, the wheel sticking film 1 can be peeled from the “laminated product” or the laminated body 10 with less force. As a result, the film to be attached to the wheel is not twisted due to excessive resistance when it is peeled off, and the film is not stretched and does not match the dimensions to be bonded. Even after the “product” is stored for a long period of time, poor peeling is less likely to occur, and the wheel sticking film 1 can be easily supplied.

  As the release agent used in such a release agent layer, known release agents such as silicone, fluorine, polyethylene, alkyd, and long-chain alkyl can be used. The thickness of the release agent layer is preferably 0.1 to 10 μm, more preferably 0.5 to 3 μm.

  Moreover, you may provide the primer layer which improves the adhesiveness of a base film and a releasing agent layer between a base film and a releasing agent layer, for example.

The pressure-sensitive adhesive layer is a layer having a function of sticking a wheel sticking film to a wheel.
Examples of the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer include acrylic, synthetic rubber-based, urethane-based, and silicone-based pressure-sensitive adhesives.

  Examples of the acrylic pressure-sensitive adhesive include those obtained by copolymerizing a functional group-containing monomer using an acrylic acid alkyl ester as a main monomer. Examples of the alkyl acrylate include ethyl acrylate, butyl acrylate, and 2-ethylhexyl acrylate. Examples of the functional group-containing monomer include acrylic acid, methacrylic acid, and hydroxyethyl methacrylate.

  Specific examples of the synthetic rubber-based pressure-sensitive adhesive include polyisobutylene, styrene-ethylene / butylene-styrene block copolymer, styrene-ethylene / propylene-styrene block copolymer, styrene-isoprene-styrene block copolymer, styrene- Examples thereof include a butadiene-styrene block copolymer.

  Specific examples of urethane-based pressure-sensitive adhesives include pressure-sensitive adhesives obtained by adding a plasticizer to a reaction product of a polyol and a polyisocyanate such as polyester polyol and polyether polyol.

  Specific examples of the silicone-based pressure-sensitive adhesive include those obtained by adding a silicone resin in order to impart adhesiveness to a silicone rubber made of polyorganosiloxane polymerized by condensation reaction or addition reaction.

  Among these pressure-sensitive adhesives, acrylic pressure-sensitive adhesives can be suitably used from the viewpoint of weather resistance and the like. In particular, it is preferable to use an acrylic pressure-sensitive adhesive obtained by crosslinking an acrylic copolymer with a crosslinking agent such as a polyisocyanate crosslinking agent, an epoxy crosslinking agent, an aziridine crosslinking agent, or a chelating crosslinking agent.

  Examples of the polyisocyanate-based crosslinking agent include hexamethylene diisocyanate, xylylene diisocyanate, tolylene diisocyanate, and isophorone diisocyanate. These biuret bodies, isocyanurate bodies, adduct bodies and the like may also be used.

  Examples of the epoxy crosslinking agent include N, N, N ′, N′-tetraglycidyl-m-xylenediamine, 1,3-bis (N, N-diglycidylaminomethyl) cyclohexane, polyethylene glycol diglycidyldiamine, and the like. It is done.

  Examples of the aziridine-based crosslinking agent include N, N′-hexamethylene-1,6-bis (1-aziridinecarboxamide), trimethylolpropane tris-β-aziridinylpropionate, tetramethylolmethane-tris-β-aziridini. And lupropionato.

  Examples of chelate-based crosslinking agents include tris (acetylacetonato) aluminum, diisopropoxybis (acetylacetonato) titanium and the like.

A crosslinking agent may be used individually by 1 type, and may be used in combination of 2 or more type.
By adjusting the cross-linking amount of the cross-linking agent, it is possible to develop the necessary adhesive properties for various wheels. As for the usage-amount of a crosslinking agent, 0.01-10 mass parts is preferable with respect to 100 mass parts of acrylic copolymers. Moreover, you may use the crosslinking agent as mentioned above 1 type or in combination of 2 or more types.

  Moreover, an ultraviolet absorber can also be contained in an adhesive layer so that the spectral transmittance of the 300-380 nm wavelength range of the film 1 for wheel sticking may be 0-20%. As a content rate of a ultraviolet absorber, 0.01-10 mass parts is preferable with respect to the resin content of the adhesive layer 12. FIG. Specific examples of the ultraviolet absorber include those described above.

  In addition, the pressure-sensitive adhesive layer 12 can be appropriately mixed with one or more of a tackifier, a softener, an anti-aging agent, a filler, a colorant such as a dye or a pigment, and the like as necessary. Examples of the tackifier include rosin resins, terpene phenol resins, terpene resins, aromatic hydrocarbon-modified terpene resins, petroleum resins, coumarone / indene resins, styrene resins, phenol resins, xylene resins, and the like. Examples of the softener include process oil, liquid rubber, and plasticizer. Examples of the filler include silica, talc, clay, calcium carbonate and the like.

  Although the thickness of an adhesive layer does not have a restriction | limiting in particular, Usually, what is necessary is just 3-100 micrometers, Preferably it is 5-60 micrometers.

  The wheel sticking film 1 can be manufactured by directly applying an adhesive to one side of the base film. When a release agent layer is provided on the wheel sticking film 1, a release agent layer is provided on the opposite side of the base film from the side to which the adhesive is applied prior to the application of the adhesive layer. In coating, the composition forming each layer is diluted with a solvent as necessary to prepare a coating solution, and is coated and dried using a coating device, whereby an adhesive layer having a predetermined thickness or peeling is applied. An agent layer can be formed. The wheel sticking film 1 is wound as a roll on a winding portion of a coating apparatus.

  The method for forming the pressure-sensitive adhesive layer and the release agent layer is not particularly limited. For example, an air knife coater, a blade coater, a bar coater, a gravure coater, a roll coater, a roll knife coater, a curtain coater, a die coater, a knife coater, or a screen. Examples of the forming method include coating and drying using a coater, a kiss coater, and the like.

  The “laminated product” is a product in which a predetermined number of wheel adhesive films 1 are laminated in order so that the upper adhesive layer is bonded to the upper surface of the release agent layer of the lower wheel adhesive film 1. Although there is no restriction | limiting in the number of lamination | stacking of the film 1 for wheel sticking, In consideration of work efficiency, the number of sheets which becomes a multiple of 4 like 40 sheets (for 10 cars) or 100 sheets (for the same 25 cars) is preferable. A backing paper is bonded to the adhesive layer of the lowermost wheel adhesive film 1 so that the adhesive surface is not exposed.

  Although there is no restriction | limiting in particular as a base paper, For example, plastic films, such as quality paper, glassine paper, clay coat paper, polyethylene laminated paper, and a polyethylene film, a polypropylene film, a polyethylene terephthalate film are used. The release agent layer may be formed on the mount.

  As a manufacturing method of a “laminated product”, for example, a roll-shaped wheel sticking film 1 is used in the following procedure.

  First, the roll-shaped wheel sticking film 1 is rewound into a roll having an outer periphery larger than the diameter of the wheel, and a part of the outer periphery of the roll is cut and developed, and then punched into the shape of the wheel.

  The peeling force from the laminated product of the wheel affixing film is determined as an adhesive force to the tape back surface described in JIS Z0237. The 180 ° adhesive force to the back surface of the tape is preferably 1 to 500 mN / 25 mm, more preferably 10 to 100 mN / 25 mm at a temperature of 10 ° C. and a tensile speed of 50 mm / min.

  Moreover, the adhesive force with respect to the wheel of the wheel sticking film is calculated | required as 180 degree adhesive force with respect to the stainless steel test body as described in JISZ0237. The ratio X / Y of the 180 ° adhesive strength X to the stainless steel specimen and the 180 ° adhesive strength Y to the back of the tape is preferably 1.2 or more, more preferably 1.5 or more. If the ratio X / Y is such a value, only one film for attaching a wheel 1 is left from the laminated body 10 affixed to the wheel, and when the laminated body 10 is peeled off, it floats from the wheel trying to peel off together. Can be suppressed.

  As mentioned above, although preferred embodiment of the rust prevention method of this invention was described, this invention is not limited to these.

1 Wheel Affixing Film 10, 10 'Laminate

Claims (2)

In a rust prevention method that prevents a car disc brake from rusting by covering the opening of a wheel of a tire with a wheel sticking film having a base film and an adhesive layer provided on the base film. There,
A first step of preparing a laminate in which a plurality of the film for affixing the wheel is laminated;
A second step of sticking the pressure-sensitive adhesive surface where the pressure-sensitive adhesive layer of the laminate is exposed to the wheel;
Have a, a third step of peeling the configured laminate wearing film bonded plurality of the wheel other than the wheel sticking film in which the pressure-sensitive adhesive layer on the wheel are in contact,
The thickness of the laminate, so as to always be 1mm or more, antirust method characterized by have a step of adding a plurality of said wheel sticking film to the laminate. Antirust method of claim 1, repeating the second step and the third step.

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