DE1052205B - Use of an electroforming process for the production of shaving foils for dry razors - Google Patents

Description

HIN ÜKSRKl'UBUK I) KII ¹ I SClH.ΛΜ

GERMAN

. KL C 23 D

PATENT OFFICE

EXPLAINING EDITORIAL 1052 205

B41548VI / 48a

REGISTRATION DATE: AUGUST 27, 95 6

NOTICE
JERANMEII) INO
UN Al ¹ SCAIlK »ER
AtSI EXPRESS

MARCH 5, 19 5 9

For a flawless, close shave with dry razors. which with a shaving foil are equipped, is the formation of the shaving foil of vital importance. This imili consist of the thinnest possible material, because the thinner the shaving foil to be placed on the skin is. the better the whiskers that protrude through the perforation of the shaving foil are cut off. Also, the free passage of the perforation must be as large as possible, so that as many hairs as possible be cut off at the same time and as a result the shave is completed in a relatively short time. The individual holes and the material thickness are but so big too! that the H.mt does not pass through the perforations and through the under the Shaving foil running shear blades can be affected. To this end, a Elongated hole proved advantageous which T> esomlers one or more constrictions on its long sides! «.

To achieve the fastest, smoothest possible and skin-friendly shaving, the perforations of the shaving foil must be widened as much as possible towards the skin side and there the l-ochlcinten be rounded. Through this it is achieved that the hair glides easily into the perforation and the shaving foil is soft and feels smooth on the skin.

The invention relates to the use of an electroforming process for manufacture of shaving foils for electric razors.

It is already a process for the electroforming production of perforated foils on photochemicals Paths known, but only for perforated foils, sheets. Mother plates, strips, nickel filters and tinsel, Sieves, diaphragms and nozzles, but not for shaving foils for dry razors. d. H. for no cutting organs, for which in many respects significantly different requirements are to be made. So is the edge retention, special wear resistance and sufficient for a cutting tool Requires elasticity.

The known by mechanical means, for. B. shaving foils produced by drilling, milling or punching for dry razors, d. H. Cutting organs have perforations of a cylindrical shape, their perforated edges are more or less sharp-edged, which is a strong irritation for sensitive skin evokes. Such shaving foils are also only W-restricted usable because the material made of steel has been exposed to the effects of the weather, especially in (Legends with very humid air, e.g. at sea as well as in the tropics, and corroded by perspiring users. Also through the > P

use

an electroforming process

for the production of shaving foils

for dry razors

Applicant:

Balco Filtertechnik G. mb H.,
Oldenburg (Oldbg.), Industriehof 3

Helmut Conradi and Rudolf Lehmann,

Oldenburg (Oldbg.),
have been named as inventors

Turning stainless steel could not remedy these major drawbacks because this is known to be harder than normal steel and therefore

• 5 hard) is more difficult to work with, so that the fine perforations required for shaving foils, e.g. B. inclined, rectangular slots, mechanically only theoretically producible are, but opt for one that is absolutely necessary here

Mass production is not suitable.

It is also known. Electrolytically etch metal foils to a specific shape and with specific perforations.

According to the invention, the application of the

SS electroplating process in which the die (basic shape) is replaced by the photocopy of a template on conductive or non-conductive material is obtained for the production of perforated Shaving foils with any hole shape for dry

4 · Straight or rotating razors Shear knives suggested.

In the case of an efficient mass production, a large number of shaving foils must lie m-1> em-inaiider. These would usually be from a die (basic shape)

getting produced. In this case, the shaving foils receive the same current consumption at all points, with the same »· precipitation thickness results. In the Reinforcement at the points where the shaving foil is exposed to the greatest stress

Jo of the material and <· ίικ · increase in wear and tear Achieving flexural strength is a part of the invention isolated distance between the individual shaving foils on the die (basic shape) created and this chosen in such a way that through the ergelHMbleii higher

• M7M / 4U

Edge current the heavily used side edges of the Shaving foils, which are at right angles to the direction of movement of the cutting blade, are thickened.

To achieve a stiffening of the webs in the perforated field and a better cutting effect, are the depressions to be stripped in the die (basic shape) are filled in such a way that their surface is around «Is a small amount deeper than the surface of the die (basic shape), which means on the shear side the shaving foil achieved an elevation of the hole edges and at the same time the shaving foil at their very sensitive and heavily stressed webs are evenly thickened. Such a web elevation promotes the contact between the cutting edge of the shaving head and the shaving foil as such. You reduced significantly reduces the friction experienced by most dry razors brings with it considerable difficulties, and sets the waring formation considerable down, since the possibility of heating no longer existed due to the lower friction. In addition, the cutting angles in connection with the bar heightening are even more emphasized. This effect is particularly enhanced by the fact that it is used in the galvanoplastic production of shaving foils is possible (the edges of the holes, in particular the edges of the holes, have a greater hardness than the remaining parts of the shaving foil. This design of the webs inevitably results a"! Significantly longer use of the shaving foil, as this is due to the continuous friction of the reciprocating knife set on the underside of the shaving foils only wear the ridges, so the shaving foil itself is not attacked. As a result, the cut edges can also become Do not round off at the webs, which is essential, because after rounding off the cut edges on the Perfect shaving is no longer possible because the shaving foil then becomes dull.

To achieve increased wear resistance and stability are inserted into the perforation of the shaving foil, known per se, so that they parallel or at a suitable angle to the direction of movement of the cutting blades and are linear pull through the shear part. So z. B. the essential additional advantage in particular large utilization of the perforated shear surface when using particularly suitable hole shapes, such as Parallelograms.

In the drawing, in

Fig. 1 shows a normal size shaving foil in plan view and in

Fig. 2 shows a part of a shaving foil in a greatly enlarged scale in cross section.

To increase the wear and flexural strength, the isolated distance between the individual Shaving foils 1 on the die (basic shape) 3 selected so that the higher rawhtrom the strong iK 'claims side edges 7 of the Scherfolio, which at right angles to the direction of movement of the cutter, be thickened. To achieve stiffening the webs 4 in the perforated field 2 and achieving a lighter cutting effect are the ones to be stripped Wells 5 in the die (basic shape) 3 filled so that their Olierfläche 6 by a small The amount is lower than the () outer surface of the die (basic shape), which means on the shear side <ler

ίο shaving foil an ulwrhöhum; the edge of the hole has been reached will. In order to achieve a soft, skin-friendly and smooth shave, the shear perforations 2 the sheeting flap widened conically to the skin side and the webs as well as the sliding bars, which are arranged in this way are that they are parallel or at a suitable angle to the direction of movement of the cutting blades, between the perforations on the skin side are rounded.

Claims (4)

Claim *. ίο 1. Application of the electroforming process, in which the template is made by photocopying an original on conductive or non-conductive Material is obtained for the production of shaving foils with any hole shape jj for dry razors with straight running or rotating shear blades. 2. The method according to claim 1, characterized in that to increase the wear resistance as well as flexural strength an isolated distance between the individual shaving foils (1) on the Die (3) is created and selected in this way. that the heavily stressed by the higher marginal current Side edges (7) of the shaving foil, which are perpendicular to the direction of movement of the 3j shear knives lie, to be thickened. 3. The method according to claim 1 and 2, characterized in that daii to achieve stiffening the webs (4) in the perforated field (2) and achieving a better cutting effect 4 recesses (5) to be isolated in the die (3) are filled in such a way that their surface (6) is a small amount lower than the surface the die. 4. The method according to claim 1 to 3, characterized in that in the perforation of the shaving foil per se! »known sliding webs can be inserted in such a way that they are parallel or at a suitable angle to the direction of movement of the shear blades and move in a line through the shear part. 5 · pull through. Considered publications:
Swiss patent specifications No. 218701, 250971.413;
JS French Patent No. 1088517; Electroplating (formerly Pfanhauser). 1941, p. 1314. 1328, 1363, and 1949, p. 50. 53, 4t> 9. 1 sheet of drawings * IM7M / 44J1.M