JPS62142107A - Method and apparatus for rendering glossy finish to rod-formbody - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION GA'1 The present invention is applicable to rod-shaped bodies made of other materials, such as lip ointments, but is particularly applicable to rod-shaped bodies made of cosmetics, such as paste-like materials such as lipsticks. Regarding the surface finish of the body.

′・no ′obino. When first formed by molding or casting, the lipstick has an irregular shape and is treated with the so-called "flame treatment" which gives the surface of the mass an attractive glossy appearance.
It is known that it can be transformed by ming) J. This flame treatment or flame polishing process involves passing the rod momentarily through the flame of a gas burner for a period of time sufficient to melt the surface. It will be appreciated that it is a rather delicate operation to ensure the necessary state of melting over the entire surface of the rod without the risk of overheating and distorting certain parts of the rod. Therefore, this process requires careful monitoring, but
This process is considered essential in that it results in a significant improvement in the appearance of the rods.

Attempts have been made to achieve the same result in other ways, for example by using radiant heat. However, this attempt is not satisfactory and does not even achieve the same luster. Such a process using infrared heaters is disclosed in British Patent Specification No. 755,549. It also suggests the use of gas and air flames to produce radiant heat.

Hot air has been tried, but passing the lipstick array through a hot atmosphere or jet of hot air does produce a shine, but this method produces uneven surfaces even if the applied heat is sufficient to melt the surface. It just remains in that state.

. The present invention is based on the unexpected discovery that, if done in the right way, it is eventually possible to produce the required gloss by using hot air.

According to the invention, a cosmetic product, for example a lipstick, in the form of a rod is abraded by passing the rod through a ring of inwardly directed hot air during its axial movement. This hot air instantaneously heats the annular portions of the rod-shaped body one after another as the rod-shaped body passes through the hot air. It is also possible to fix the rod axially and allow a ring of inwardly directed hot air to pass through the entire length of the rod, but it is also possible to fix the air source and allow the rod to move past the stiffness. It is desirable to be allowed to do so. For example, the ring can be placed in a horizontal plane and the rods are simply placed one after the other to coincide with the axis of the ring and then fed into the ring and pulled back.

Surprisingly, hot air used in this way produces a satisfactory gloss. The inwardly directed rings of air can be formed by individual radial jets, but preferably exit from a single straight annular nozzle fed by the air that has passed through the electric heater. The air can be given a radial flow force ~ or some twist angle, and in both cases the pressure can be very low since the flow rate is small.

The invention will now be described in more detail by way of example with reference to the drawings.

The device according to the invention is included as a step in known devices for molding lipsticks in or outside lipstick containers, such as the known Ejectoret 4 device.

In this, a row of containers is advanced intermittently, and melted lipstick material is injected into the mold through the base of each container one after the other, the mold is then removed, and the mechanism of the container is manipulated to inject the melted lipstick material into the mold. The lipstick that has turned into a lipstick will now be ejected outside. However, the invention is equally applicable to devices in which lipsticks are individually molded and then inserted into containers.

One necessary requirement is that the solidified lipstick is delivered to the station where the device of the invention is installed, whether the lipstick is popped out of a container formed therein or otherwise retained. It is possible to feed and then produce a relative axial movement.

The lipstick blob is indicated by number 1. In the illustrated embodiment, the rods are directed downwards. The heating device comprises a double-walled hollow container 2 supported in a heated block 3, in which an annular space 5 between the two walls is provided.
There is an internal passageway 4 extending up to. Hot air heated by the passages in said block 3 (which itself can be heated by convenient means such as flame or electrical elements) flows into the annular space 5 and flows upwardly, then against the inner wall surface. It emerges in a radially inwardly directed jet from an annular slot 6 between the top end of the wall and an inwardly curved lip 7 at the top end of this wall. This effectively creates a horizontal, inwardly directed, continuously existing curtain of hot air. lipstick 1
is placed in alignment with the cylinder 2 and then moved axially downwards into the cylinder, so that each part of the lipstick surface successively passes through the horizontal air curtain. The temperature of the air, the amount of air supplied and the speed at which the lipstick is moved inside are easily determined by trial and error to give the desired gloss or polish to its surface. As shown in the bait, simply exposing the entire lipstick to hot air at once does not produce gloss, but gradually exposing each successive annular portion in this manner yields good results in terms of producing gloss. was not expected.

Although it is theoretically necessary to pass the lipstick through a curtain of hot air once, the only practical way to handle this is for the lipstick to be retracted after passing, thus reducing the overall length of the lipstick. The portion will be heated twice. Each part of the lipstick surface sequentially and instantly melts and hardens again, creating a beautiful glossy finish.

The mechanism for moving the lipstick axially relative to the cylinder is not shown as this is part of a common device for dispensing a series of lipsticks in the process of manufacturing them.

Although the cylinder is shown to be stationary and the lipstick is moved vertically downward into the cylinder, if it is easy due to the nature of the device as a whole, the lipstick can be moved upward, or the cylinder can be moved and the lipstick can be moved vertically downward. The same result can be achieved by keeping the at rest. Furthermore, this movement can be carried out in any direction, for example in the horizontal direction.

It has become clear that the process is particularly suitable for automatic continuous operation as part of the overall manufacturing process, and has been shown to be particularly suitable for automatic continuous operation as part of the overall manufacturing process, and to produce results comparable to those obtained by known flame polishing methods. It has been found that this can be achieved without any obvious problems associated with the handling of.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing one possible embodiment for the required apparatus. DESCRIPTION OF SYMBOLS 1... lipstick, 2... cylinder, 3... heating block, 4... internal passage, 5... annular space, 6... annular slot, 7... lip part.

Claims (1)

[Claims] 1. A method for applying a glossy finish to the surface of a long rod-shaped body of cosmetic material, which comprises moving the rod-shaped body in a direction along its axis and blowing hot air directed inward. movement relative to the ring,
A method characterized in that when the rod passes through the hot air ring, the ring instantaneously heats each annular portion of the rod. 2. A method as claimed in claim 1, characterized in that the rod is passed through the hot air ring and then withdrawn in the opposite direction. 3. A method according to claim 1 or 2, characterized in that the hot air ring is axially stationary, and the relative movement is performed only by the rod-shaped body. 4. A method according to any one of claims 1 to 3, characterized in that the air ring is a circumferentially continuous ring emerging from an annular slot. 5. a hollow cylindrical body with at least one open end and an annular slot on its inner surface, a device for supplying hot air under pressure to said slot; and each surface of a long bar-shaped cosmetic product. A device for imparting shine to a bar, comprising: a device for creating relative movement between the cylindrical body and the cosmetic bar so that the annular portions are successively passed through the slots. 6. The apparatus of claim 5, wherein said slot is adjacent said open end of said cylindrical body. 7. Device according to claim 5 or 6, characterized in that the cylindrical body is supported in a block which is heated and through which air passes.