JPS5918915Y2 - mall - Google Patents

Description

[Detailed description of the invention] This invention relates to a molding that is attached to a vehicle etc. for decoration and protection.More specifically, it is made of a polymeric material and extruded into a hollow shape, and has an adhesive layer on the back side. Regarding the mall that is being formed.

In this specification, soft and hard polymer materials each have a product hardness of 85 according to JISK 6301.
~97, and 98 or higher.

In recent years, hollow moldings as shown in FIG. 4 have become popular due to their light weight, material savings, and cushioning properties.

Generally, this type of hollow molding has a double-sided adhesive tape (adhesive layer) 2 attached to the back side of the molding body 1, and as shown in FIG. Do it by pressing.

In addition to double-sided adhesive tape, known adhesives can be used as pressure-sensitive adhesive members.

At this time, since the molding body 1 is extruded from a soft polymeric material (for example, PvC1 thermoplastic urethane, etc.) in order to obtain cushioning properties, the pressing force is transmitted only to both ends of the adhesive tape 2, and the central part There were areas where the required sensitive pressure (minimum required sensitive pressure) was not transmitted and almost no adhesive performance was produced, making it difficult to firmly attach the molding to the vehicle body.

That is, as shown by dotted line A in FIG.
Although the pressing force P from the top surface of the molding body 1 is transmitted through the side walls 4 and 5 at both ends of the adhesive tape 2, it is hardly transmitted to the center of the adhesive tape 2 due to the deformation of the bottom wall 6, etc. The adhesive tape 2 has a minimum required pressure P at the center.

There will be areas where the adhesive cannot reach the desired level, and adhesive performance will not be achieved.

In addition, in Figure 6, P is the pressure that the adhesive tape 2 receives, Po
indicates the minimum required pressure, and the right edge, center, and left edge indicate the respective positions of the adhesive tape cross section.

In view of the above, this invention, when installed, allows the pressing force on the molding body to be transmitted almost uniformly to the entire surface of the adhesive layer, resulting in sufficient adhesive performance over the entire surface of the adhesive layer, improving the ease of installation, and, It is an object of the present invention to provide a molding whose effects such as weight reduction, material saving, and cushioning properties are hardly hindered compared to conventional hollow moldings.

The gist of this idea is to create an inverted "T" cross-section from the inner wall to the ceiling of the hollow mold body molded from a soft polymeric material.
The molding has a convex strip having a circular concave lower surface and is suspended so that when it is attached to a vehicle body, etc., the pressing force on the upper surface of the molding body is transmitted to almost the entire surface of the adhesive layer.

Hereinafter, various embodiments of this invention will be described based on illustrated examples.

As shown in FIG. 1, a molding body 11 is extruded from a soft polymeric material such as soft vinyl chloride resin or thermoplastic urethane so as to have a hollow 12 therein.

This hollow space 12 has an inverted “T” cross section hanging from the center/center of the ceiling.
A 99-shaped protrusion 13 is integrally formed with the molding body 11 from the same material.

The surface of this protruding strip 13 facing the bottom surface of the hollow 12 is formed into a circular concave surface 13a.

In addition, on the back side of the molding body 11, neoprene foam,
A double-sided adhesive tape 2 is attached to a tape made of butyl foam or the like and impregnated with an adhesive material such as acrylic.

Usually, the adhesive side of the adhesive tape and the release side are covered with a removable protective paper.

Next, how the above embodiment is used will be explained.

When the molding is attached to the side wall (vehicle body) of a vehicle, etc., the upper surface of the molding body 11 is pressed, and the pressure distribution that the adhesive tape 2 receives due to this pressing force is as shown by the two-dot chain line B in FIG. Met.

By pressing the upper surface of the molding body 11, the protruding strip 1
After both ends of the circular concave surface 13a of No. 3 first contact the hollow bottom surface, the circular concave surface 13a deforms into a flat surface and contacts the hollow bottom surface, so that the deformation stress is transferred to the adhesive tape 2 side. The minimum required sensitive pressure P is transmitted over almost the entire surface of the adhesive tape 2.

With the above pressure applied, the adhesive tape 2 exhibits sufficient adhesive performance over the entire surface.

In addition, as shown in FIGS. 2 and 3, the insert 16 may be buried in the bottom wall 15 of the molding body 11 shown in FIG. If molding is performed, the pressing force from the upper surface of the molding body 11 will be more uniformly transmitted to the adhesive tape, as shown by the solid line C in FIG. 6, and this will be effective.

The molding of this invention has the above-mentioned structure, so when it is attached to a vehicle, the pressure on the molding body is almost uniformly transmitted to the entire surface of the adhesive tape, and the adhesive tape exhibits sufficient adhesive performance over the entire surface of the molding. In addition to improving the wearability of
Furthermore, since the molding has a sufficient hollow space, the effects of weight reduction, material saving, cushioning properties, etc. are hardly hindered compared to conventional hollow moldings.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a molding showing an embodiment of this invention, Fig. 2 is a sectional view of an embodiment in which the insert is buried in the bottom of the molding body in Fig. 1, and Fig. 3 is a sectional view of the molding body showing an embodiment of the invention. A cross-sectional view of an embodiment made of a hard synthetic resin material,
Fig. 4 is a sectional view of a conventional hollow molding, Fig. 5 is a sectional view showing how the molding shown in Fig. 4 is attached to the vehicle body, and Fig. 6 is the pressure applied when the adhesive tape presses the top surface of each molding body. It is a graph diagram showing distribution. 1...Mall body, 2...(double-sided) adhesive tape, 3...Car body, 6...Bottom wall, 11... Molding body, 12...Hollow, 13.18...Second protrusion, 13a...
Arc-shaped concave surface, 15...Bottom wall part, 16...
·insert.

Claims (1)

[Claims for Utility Model Registration] The molding body is made of a soft polymeric material and has an open space, and is integrally extruded with protrusions on the inner wall of the hollow, and an adhesive layer is formed on the back surface of the molding body. A mall characterized in that the protruding stripes have an inverted letter-shaped cross section hanging from the inner wall ceiling, and the surface facing the hollow bottom surface is formed into an arc-shaped concave surface.