DE2431382A1 - RESERVOIR MADE OF PLASTIC - Google Patents

Description

PATENT LAWYERS MEISSNER & BOLTE 24 3 138?

DIPL.-ING. HANS MEISSNER DIPL.-ING. ERICH BOLTE

D 28 Bremen, June 27th 1974

—I Sievogtstrasse 21

Federal Republic of Germany

Registrants: Phone 0421 - 34 2019

Telegrams: PATMEIS BREMEN

Swifts of Exmouth Limited

Pound Lane, Exmouth, Devon, England

- ¹ Our sign 1511

Plastic containers

The invention "relates to containers such as saucers, plates, Bowls or ashtrays, which are provided with a decorative border and made of a suitable plastic material according to the so-called compression molding process are made.

It is known to use the compression molding process to produce plastics process, whereby one batch of a thermosetting plastic material, e.g. melamine, with appropriate Temperature and corresponding pressure between two tools are deformed into a container, e.g. a plate. Should he Plates are provided with a decorative edge, which differs in color from the plate itself, so one uses too for this purpose generally a film with a coloring Material is impregnated. This film is applied to the edge by the upper of the two tools. That The upper tool is generally used as a punch or male mold and the lower tool is generally used as a press plate or Called die. The film is sensitive to heat and the color is transferred to the edge as a result of the action of heat in the equipment during molding.

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Models sent in will be destroyed after 2 months if not reclaimed. Oral agreements, especially by telephone, require a written one Confirmation. The fee schedule for patent attorneys of the Chamber of Patent Attorneys is relevant for billing. The costs charged

are due on the invoice date without deduction. In the event of late payment, bank interest will be charged. Jurisdiction and place of performance Bremen. Bremer Bank, Bremen, No. 23100 28 · Die Sparkasse in Bremen, No. 1045355 · AIIg. Deutsche Credit-Anstalt, Bremen, No. 202598 · Postal checking account: Hamburg 33952-202

However, this method has many disadvantages. You]? Olie is sensitive and the staining bz'.v. Color transfer succeeds not always in a satisfactory manner. But even if the coloring is satisfactory, the surface can of the colored edge appear relatively dull or dull compared to the rest of the plate.

The invention makes it its task to riit a container to create a decorative border and to develop a process with which this container can be made.

According to one embodiment, the invention accordingly exists from a process for the production of a container made of ε-us plastic with a decorative border, which is characterized in that the second, made of plastic material, is formed by compression molding one color existing part of a container with the first, previously made of a plastic material of another color Part of the container connects, wherein one of the two parts has an edge on which material from which the other part is not upset.

In the present context, "colored" plastic material understood any colored plastic material, and both black and white or translucent or any other colored material.

According to a further preferred embodiment, there is the Invention from a method for producing a container made of plastic with a decorative edge, which is characterized is that you first of a suitable plastic material of one color in a stamp (male mold) and press plate (Die) existing molding press forms the first part of a container with an edge, then the molding press opens,

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applies a second batch of plastic material of a different color to the first part of the container, the stamp of the Exchanges the mold for a second stamp and thus the second plastic batch on the first part of the container formed so that the same does not get on the edge, so that a container is created which has an outer part with a rim made of plastic material of one color and an inner part made of plastic material of a different color.

In a further embodiment, the invention also relates a device for producing a container made of plastic with a decorative edge, which is characterized by a first and a second press ram (male), with means of the first ram in cooperation with a press plate (die) by press molding a plastic material a Paint the first part of a container with a circumferential edge and a rim extending from the edge is, on which then by means of the second ram and the same press plate a second part made of a plastic material a different color is molded and wherein the second ram has a web that the circumferential edge in substantially tangentially touched.

It is readily apparent that it is important to prevent material from the second batch from getting onto the edge. How found was, this can be achieved by designing the two rams accordingly, in such a way that the second ram rests on the edge formed on the first part of the container in a substantially tangential line and so that the part of the second press ram lying next to the web forms part of a cavity between the second press ram and the press plate forms, which can accommodate excess plastic material. So that this excess material

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do not come into contact with the edge of the first part can.

It has been found that a container made in accordance with the present invention is more durable than that made after known methods produced container and also has a better appearance.

In order to emphasize the essence of the present invention more clearly, will hereinafter describe a container according to the invention and the method for making the same in, for example Embodiment and explained with reference to the accompanying drawings. In the drawings:

Figure 1 is a longitudinal section through a ram

and by a plate according to the present invention, wherein the ram during the Going up after completion of a plate is shown;

FIG. 2 shows a perspective illustration of part of the plate from FIG. 1.

The plate according to the present invention, which is shown in the figures, consists of two parts, which as a result of Manufacturing process are firmly tied to one another. Both parts are made of a thermosetting plastic material, e.g. melamine, but both parts have different colors, e.g. one green and the other white.

The first part made of green melamine is denoted by 1-c. This part has a flat, round base 2 which, at its edge, has an annular, vertically downwardly extending base Wall 3 has formed on which the plate is.

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A drawn side wall 4 extends upwards from the base 2. The plate has a rim 5 which extends slightly upwards from the outermost edge of the side wall 4; at the point where the side wall 4 and edge 5 meet, an edge 6 is formed which runs in a circle around the upper part of the plate.

The second part of the plate, which is made of white melamine, is denoted by 7. The second part has a flat base plate 8 which lies above the base plate 2 of the first part, and also a side wall 9 which extends upwardly in an arcuate shape from the base plate and above the side wall 4 of the first plate part and ends at the edge 6.

It can be seen from the longitudinal section that the plate has essentially the same thickness everywhere. This is achieved by shaping the first plate part so that the base plate 2 is relatively thin and the thickness of the side wall 4 is gradual increases from the thickness of the base plate 2 to the full plate thickness or thickness at the edge 6 and the flange or edge 5, and in that the second plate part is manufactured so that it is relatively thin on the base plate and the side wall 9 gradually decreases in thickness upwards, so that an extremely thin part of the wall 9 ends at the edge 6. If you look at the plate described above, it appears white with a green border.

The following is the preferred embodiment of the invention Process for the production of the described plate explained. The first part of the plate is made by conventional press molding made using an upper ram and a lower press plate, neither the ram nor the press plate are shown in the figures. A batch of green MeIamin coolant is placed on the press plate, whereupon

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INSPECTED

the ram is operated and in cooperation with the Press plate from the plastic forms the first plate part. Pressure and temperature must of course be used during the pressing process carefully controlled.

After the first plate part has been manufactured, the first press ram is used (not shown) and a second batch of white melamine plastic material on the first plate part given. This batch is then shaped with the aid of the second ram 10 of FIG. This ram shows has a smaller diameter than the first punch and is provided with a web 11 which is shaped so that it is with the Edge 6 can engage on the first plate part. The amount of plastic used to form the second part of the plate used must of course be carefully calculated and measured. It is important that the first and second Press rams have such shapes that there is effective contact between the web 11 on the second press ram and the area the first part of the plate, at which the colored edge ends, is reached. Once effective touch is achieved, one can small amount of excess material from the second batch escape upwards into a cavity in between a part of the second ram and the press plate is present. The part of the second ram that forms the wall of the cavity limited, lies next to the web or paragraph 11. If intimate contact is not achieved, part of the second Charge to the: iand 5 will run out, which means that this plastic material must either be removed or that the plate is useless. It has been found that control or elimination of the leakage of plastic material has been achieved can be made by forming the area 11 of the ram so that it touches the edge 6 essentially tangentially, what a point-like contact in the vertical direction and

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ORIGINAL INSPECTED

~ 7 -

meant a lenticular contact around the edge

Temperature and pressure "in the second molding operation be regulated in such a way that the desired connection occurs between the first and the second part.

The method described "Goal Standing" is only as an example View embodiment of the invention; it is easily possible to deviate from this described mode of operation.

For example, it is possible to shape the plate in the opposite way. The inner part of the plate can be in a first Compression molding operation and the outer part can be produced with the edge in a second compression molding operation.

In this pail the first ram must then be a smaller one Have diameter than the second ram. In the manufacturing method explained here, the first plate part remains after production in the form, while the first ram (not shown) is raised, the second batch is introduced and the second ram will be lowered. However, it is also possible to produce the first plate part on a first device and molding the second plate part onto the first plate part in a second, separate machine or device.

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ORIGINAL INSPECTED

Claims (5)

PATENT Attorneys MEISSNER & BOLTE 2 ^ 31382 DIPL.-ING. HANS MEISSNER DIPL.-ING. ERICH BOLTE D 28 BREMEN. July 27, 1974 - Sievogtstrasse 21 Federal Republic of Germany .nmelder: Telephone 0421-342019 , "Swifts. Of ExmOUth Limited Telegr _am me: PATMEIS BREMEN round lane, Exmouth, Devon, England Our sign Expectations Process for the production of a container made of plastic with a decorative edge, characterized in that one by compression molding the second part (7) of a container made of a plastic material of one color with the first, previously made of a plastic material of a different color (1) of the container connects, wherein one of the two parts (1,7) has an edge (5) on which the material from which the other part is made does not is upset. 2. A method for producing a container made of plastic with a decorative edge, characterized in that one first made of a suitable plastic material of one color in a press die (male mold) and press plate (female mold) existing molding press forms the first part (1) of a container with an edge (5), then the molding press opens, applying a second batch of plastic material of a different color to the first part (1) of the container, the ram the mold is exchanged for a second ram (1O) and thus the second plastic batch is molded onto the first part (1) of the container in such a way that it does not reaches the edge (5) so that a container is created 509883/0556 Submitted fronds will be destroyed after 2 months, if not reclaimed. Oral agreements, especially by telephone, require a written one Best; ' Uu-g. The fee schedule for patent attorneys of the Chamber of Patent Attorneys is decisive for the billing of fees ? r, 3 due without deduction on the date of recruitment. In the event of late payment, bank interest will be charged. Jurisdiction and place of performance Bremen. Ererrf-r Eant Bre-nen. Mr.; r 100: 3 De Sparkasse in Bremen, No. 104 5855 ■ Alig. Deutsche Credit-Ansta'i, Bremen, No. 202 59S Postal checking account: Hamburg 339 52-202 which has an outer part (2,4) with an edge (5) made of plastic material of one color and an inner part (8,9) made of plastic material of a different color. 3. The method according to claim 2, characterized in that the second ram (10) a web "or area (11) has, which is designed so that it has in a substantially tangential line the edge (6) from the first ram is formed on the first part of the container, touches, and that the shape of the second ram (10) is designed so that a cavity is formed between the second press ram (10) and the press plate, which can absorb all excess material of the second batch. 4. Apparatus for producing a container made of plastic with a decorative edge, characterized by a first Press ram (male mold), which interacts with a press plate (female mold) for the production of a first part (1) a container with a circumferential edge (6) and an edge (5) extending from the edge by compression molding a plastic material of one color is used, as well as a second press ram (10), which in cooperation with the same press plate for producing the second part (7) of the container from a plastic material of another Color is used on the first container part (1), the second press ram (10) having a web or area (11), which is designed so that it in a substantially tangential line the circumferential edge (6). ' touched. 5. "Device according to claim 4, characterized in that the shape of the second Preßstempela (10) is designed so that when molding plastic material between the second 509883/0556 Press ram (10) and the PreSplatte part of the second Press ram (10), which is next to the area or web (11) lies, part of a cavity between the second r're.; - stamp (10) and the press plate, in which excess plastic material can enter, so that clies « Do not put excess material on the edge (5) of the icing Part (1) arrives. Purely for the applicant: Meissner & Bolte patent attorneys Bremen, June 27th, 1974 509883/0556