JPH0725245Y2 - Masking material - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial field of application) The present invention is mainly used to cover a window frame or the like so that paint does not adhere to the window frame or the like when painting an automobile body. The masking material used.

(Prior Art) For example, in an automobile painting process as shown in FIG. 3, an undercoat is first applied to a body 1, and then a window frame 2 and the like are black-painted. After that, the window frame 2 etc.
As shown in the figure, it is covered with a masking material 3, and in this state, the body 1 is overcoated.

As the masking material 3, a band-shaped aluminum foil is used, which is manually pressed against the window frame 2 or the like to be bent into a C-shape and covered so as to wrap the window frame 2 or the like, and the end portion is a tape. I'm trying to stop it.

(Problems to be solved by the invention) By the way, since the above-mentioned masking material 3 uses a simple aluminum foil, sharp wrinkles 4 are generated as shown in FIG. 5 when the window frame 2 and the like are wrapped. In particular, wrinkles 4 often occur at the corners of the window frame 2. There is a problem that the wrinkles 4 of the aluminum foil come into contact with the black coating film 6 of the underlayer 5 such as the window frame 2 in a blade-like manner or press-bond to the coating film 6 to cause scratches 7 on the coating film 6. Further, when removing the masking 3, there is a problem that the top coating film on the body 1 side is also scratched.

The present invention has been made in view of the above circumstances, and an object of the present invention is to easily and surely mount it on a member such as a window frame that requires masking so as to cover it, and sharp wrinkles do not occur at that time. In other words, it is an object of the present invention to provide a masking material which is very useful for painting a vehicle body without the risk of scratching a member such as the window frame or a coating film of a body or causing a defective appearance such as gloss unevenness.

[Constitution of device]

(Means for Solving the Problems) In order to achieve the above-mentioned object, the masking material of the present invention is
On one or both sides of a soft aluminum foil with a thickness of 15 μm or more,
It is characterized in that thin paper having a basis weight of 30 g / m ² or less is bonded to each other via a thermosetting adhesive.

(Function) Since the masking material having the above-mentioned structure uses the soft aluminum foil having an appropriate thickness of 15 μm or more, it is easy to perform the masking so as to wrap the member such as the window frame, and is appropriately elastic and the masking state. Will surely hold.
Moreover, since an appropriate amount of thin paper is attached to the soft aluminum foil, sharp wrinkles do not occur, and it may damage the window frame members and the coating film of the body and cause poor appearance such as gloss unevenness. Disappears.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

First, as shown in FIG. 1, the masking material 13 of the present invention is
A laminated structure is formed by laminating a thin paper 16 on one surface of a soft aluminum foil 14 with a thermosetting adhesive 15 in between. The overall size and shape are set according to the application such as a member to be masked and are not particularly limited. When masking, the thin paper 16 is used in such a direction as to face the member such as the window frame 2 as shown in FIG.

The thin paper 16 may be provided on both sides of the soft aluminum foil 14, and in this case, the thin paper 16 may be used in either the front or back direction.

The soft aluminum foil 1 is a soft aluminum foil having a thickness of 15 μm or more. That is, a soft aluminum foil having a thickness of less than 15 μm tends to have wrinkles during the masking work, and its strength (waist) is too low, resulting in poor holding (molding) properties. On the other hand, a hard foil or a semi-hard foil has a strong springback property and thus is inferior in retainability, and has a sharp edge, which makes masking work difficult. Therefore, a soft aluminum foil having a thickness of about 30 to 50 μm is preferable.

The thin paper 16 has a basis weight of 30 g / m ² or less, preferably 10 to ²⁰ g / m ^2.
Western paper or Japanese paper may be used as long as it has a grammage of about 100 g and a soft surface with a smooth surface and no fluff. The use of paper having a basis weight of more than 30 g / m ² is disadvantageous in that the springback property is increased and curling is facilitated. Generally, there is a difference in smoothness between the front and back surfaces of paper. In this case, it is preferable that the smooth surface is the outer surface and the uneven surface is the bonding surface with the inner aluminum foil 14.

The adhesive 15 for bonding the aluminum foil 14 and the thin paper 16 is
Acrylic, epoxy, phenoxy, and urethane thermosetting adhesives with excellent heat resistance are used. In other words, with thermoplastic adhesives, the baking process of the coating film (usually 30
It is melted in hot air for about a minute), the thin paper 16 is peeled off from the aluminum foil 14 by this, and a part of the thin paper 16 adheres to the surface of the semi-cured coating. It may decrease. For this purpose, the adhesive 15 uses the above-mentioned thermosetting adhesive.

The thickness of the adhesive 15 is preferably in the range of 0.1 to 5 g / m ² after drying, and when it is too thick, the masking material 13
Adversely affects the retention of.

Since the masking material 13 having the above-described structure uses the soft aluminum foil 14 having an appropriate thickness of 15 μm or more, it is easy to mask the member such as the window frame 2 so as to wrap it, and has an appropriate elasticity. As a result, the masked state is surely maintained. Moreover, since an appropriate amount of thin paper 15 is attached to the soft aluminum foil 14, sharp wrinkles do not occur,
As shown in FIG. 2, the wave is smooth. For this reason, the black coating film 6 on the base 5 of the member such as the window frame 2 does not come into contact with or press-bond to the black coating film 6 like a knife, and the coating film 6
Even if they come into contact with the coating film of the body or the body in the state of the semi-cured coating film, the cured coating film will not be scratched or have a poor appearance such as gloss unevenness.

[Effect of device]

As mentioned above, the masking material of the present invention uses the soft aluminum foil with a proper thickness of 15 μm or more, so it has excellent holding properties and can be easily covered by a member such as a window frame that requires masking. -It can be installed securely, and since an appropriate amount of thin paper is attached to the soft aluminum foil, sharp wrinkles do not occur when masking it, and the window frame members and body coatings are scratched It is very useful for masking of vehicle body painting, etc., without worrying about appearance defects such as gloss and unevenness.

[Brief description of drawings]

FIG. 1 is a partially enlarged cross-sectional view showing an embodiment of the masking material of the present invention, FIG. 2 is a partially enlarged cross-sectional view of the masking material in use, and FIG. FIG. 4 is a perspective view of a window frame in which a masking material is covered, FIG. 4 is a partial cross-sectional view taken along the line AA of FIG. 3, and FIG. 5 is a partially enlarged cross-sectional view showing a defect due to a conventional masking material. . 1 ... Body, 2 ... Window frame, 13 ... Masking material, 14 ...
… Soft aluminum foil, 15… Thermosetting adhesive, 16… Thin paper.

Claims (1)

[Scope of utility model registration request] 1. A masking material comprising a soft aluminum foil having a thickness of 15 μm or more and one or both sides of which a thin paper having a basis weight of 30 g / m ² or less is bonded via a thermosetting adhesive.