SE462207B - TRANSFER OF HANDLES AND SIMILAR AND HANDLES OF TRANSFER - Google Patents

Description

462 207 '- ° -' outside and coated with fibers by electrostatic flocculation. the coating according to the invention can be evenly flocked over the entire surface, but it can also suitably be flocked only on the sides and tops of the grooves as the flock in the bottoms of the grooves does not do much good.

The material to be used according to the invention and which is to possess the ability to shrink when heated consists suitably of plastic, so-called shrink plastic. Such plastics are well known and will not be described in more detail here. They are thermoplastics and one type that fits well with the present invention is PVC plastic. The ability to shrink when heated is imparted to them during manufacture as they are stretched after spraying or casting in the hot state and allowed to cool in this stretched state. Tensile stresses are then built into the material, which stresses are released again when heated and cause the material to contract. The shrinkage capacity of the material, if it consists of a hose, is diametrically 40-50% and 5-15% in length. It is thus easy to get a shrink tubing to sit on a shaft with a secure grip.

The invention also includes tools, sporting articles and the like which are characterized in that they have been applied with a coating as described above.

Characteristic of these tools is that the cover on the handles has completely assumed the shape of the handle by the covers being heated after application.

The invention will be described in more detail below with reference to the drawing where the invention is exemplified by means of a shrink tubing and where Fig. 1 in radial section shows a section of a shrink tubing according to the invention and where Fig. 2 shows a shrink tubing according to the invention in perspective.

Figure 1 shows on an enlarged scale a section through a shrink tubing according to the invention. The hose consists of a body 1 with projecting longitudinal axes 2. On these axes 2 fibers 3 462 207 have been applied by electrostatic flocculation. This process is well known and will not be described in more detail here. It means that you first coat a surface with an adhesive and then let electrostatically charged fibers fall on the surface provided with adhesive. This surface is also electrostatically charged and thus attracts the fibers. After drying or curing the adhesive, the surface is finally cleaned of fibers that have not adhered.

The fibers used are usually nylon fibers with a length of one or a few millimeters. Shorter fibers may also be present. As an example of a suitable adhesive, polyurethane can be mentioned, but other adhesives can also be used.

As can be seen from the figure, the entire surface has been coated with flock, both on the ridges, on the sides and down in the bottoms of the grooves.

In this way, a surface is achieved which very well meets the expectations, namely that hand sweat should be able to be ventilated away, that the temperature of the handle where the cover is located should feel comfortable and that vibrations should be dampened. Since the coating according to Fig. 1 has been flocculated in an extended state, the fibers on the sides of the ridges will go into each other during the shrinkage. This leads to a stronger cohesion of the ridges due to the velcro effect that arises as a result.

The fibers in the bottoms of the grooves do not do the same good as those on the sides and tops of the ridges. You can then, if you want to, avoid flocking these bottoms. This can be achieved by applying glue only on the tops and sides of the grooves by, for example, coating.

Figure 2 shows a shrink tubing according to the invention. This shows a body 1 with longitudinal ridges 2 and with fibers 3 applied over the entire surface. Although the invention is illustrated by a shrink tubing, it is apparent that other configurations of base material may also be used. For example, it is conceivable to flock a hood 362 207 which is then threaded over a corresponding surface.

When the cover according to the invention is to be applied to, for example, a shaft for a tool, a curling hose which is prepared as above is pulled over the shaft which is then heated to a temperature of approx. 100 degrees. During heating, the hose shrinks and it sneaks into the shape of the shaft. Since the shrinkage is relatively large, e.g. 40-50%, you get a very secure retention of the cover. After a long period of use and when the cover may be worn, this is easily replaced with a new one by simply cutting off the old one and inserting a new one in the simple way described above.

The advantage of using a knurled surface instead of a smooth one on the substrate is that the flock does not fold during the contraction and that the ventilation of hand sweat is facilitated even when the outermost flock may be worn away after long-term use.

The invention is not limited to the embodiments shown, but it can be varied in various ways within the scope of the claims.

Claims (5)

'5' 462 207 PATENT CLAIMS A cover for handles and the like comprising a material (1) capable of shrinking on heating, which material is coated with fibers (3) by electrostatic flocculation, characterized in that the material (1) is knurled on the outside during the flock coating. Coating according to claim 1, characterized in that the fibers (3) have been applied mainly to the tops and sides of the grooves (2). Coating according to one of Claims 1 or 2, characterized in that the material (1) consists of plastic, so-called shrink plastic. Handles for tools, sporting articles and the like, characterized in that they have been coated according to any one of claims 1-3. Handle according to claim 4, characterized in that the cover has been heated after application and thereby assumed the shape of the handle.