DE2154602A1 - PROCESS FOR MANUFACTURING HOLLOW BODIES, IN PARTICULAR TUBES MADE OF PLASTIC OR PLASTIC-METAL COMBINATIONS - Google Patents

Description

215460? PATENT ADVOCATE DIPL.-PHYS. HEINRICH SEIDS 62 WiesbadenBierstadter Höhe 15. P.O. Box 12068 «Telephone (06121) 565382 Postsdied: Frankfurt / Main 1810 08 · Bank Deutsdie Bank 3956372 · Nass. Sparkasse 108003065

in the

German Patent Office Wiesbaden, 26 October 1971 _O

S 248 - S / ri

8000 Munich 2
P.O. Box

C. 3? · Spiess & Sohn

6719 Kleinkarlbach

Process for the production of hollow bodies, in particular tubes made of plastic or plastic-metal combinations

Addendum to patent ... (patent application P 16 29 265.2-16)

The subject of the main patent ... (patent application P 16 29 265.16) is a process for the production of hollow bodies, in particular tubes made of plastic or plastic-metal combinations, in which a tube body of a certain length separated from an endless tube, fed to a holding mandrel and connected to a prefabricated tube bottom shoulder, whereby the connection of the tube body and tube bottom shoulder is through

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Connection material is made which is plasticized by heat in a manner known per se. According to the main patent the connecting material at the transition to the sprayable state is almost up to the decomposition temperature range, at least but so far that its heat capacity is sufficient, the tube body and the tube shoulder in the connection area to plasticize, heated and only directly at the junction of the tube pluck and the tube shoulder in be attached iOrm of a ring

However, the method according to the main patent assumes that for connecting the tube body and tube shoulder as far as possible the same material in both physical and color sense is used to give the whole the appearance of an in to give a piece of injected shoulder. This in itself means a problem that is not always easy to solve. P In the process according to the main patent, there is also the fact that the tube body is plasticized at its edge area In any case, damage and deterioration in the appearance of the tube body result when the tube body made of relatively sensitive film-shaped material oüex For example, there is composite film containing paper.

The invention is therefore intended to achieve a significant further development and improvement of the method according to the main patent

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permit. In particular, the adjustment difficulties the tube shoulder with the tube body with regard to the physical properties and color of the material be eliminated.

According to the invention it is therefore proposed that the connection of the tube body and tube shoulder as a distinctive, to form a contrasting intermediate member. This allows the material to be chosen for this connection that a secure connection is achieved by plasticizing the edges of the tube body and the tube shoulder can be without appreciably damaging adjacent areas of the tube body and / or the tube shoulder. By the distinctive, contrasting formation, the connection point is used as a decorative element.

JThe distinctive highlighting of the connection point can be achieved by Color contrasts or relief-like decorations, corrugations, lettering, ornaments and patterns are made. In any case

the connection point can be used as an effective advertising and sales-promoting one Element are used.

According to the invention, part of the shoulder can also be included in the connection. By corrugation or Groupings of ornaments can use the tube for the better

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Unscrewing or screwing on the shoulder made it easier to grip will. Due to the different, strongly protruding, distinctive colors of the connection point, there can be references to Genus or classification can be made.

The method according to the invention also offers the tube manufacturer special advantages, for example the possibility of " the ability to reduce warehousing. It can then the same shoulder piece is used for a large number of tube recipients and the desired distinctive difference the tubes of different customers by using different company symbols, lettering, colors etc. are caused, so that the tube by the design of the connection between the tube body and Tube shoulder gets its own personal touch.

In the context of the invention, it is also possible to remove the prefabricated tube shoulder before connecting it to the tube body to be provided with an embossing, an imprint or some other decoration and during the manufacture of the tube the Overmould the surface of the tube shoulder with transparent material, which at the same time connects the tube shoulder with the tube body.

In order to change the color of the connection within the scope of the invention

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place particularly favorable as a qualification note, for example "Rotring", "Oroldring", "Silberring", "Marmorring" To be able to use and the like more, for example the possibility of using pigments corresponding to the material for the joint in red, gold, bronze, silver bronze or also to be added for the creation of a marble or a mother-of-pearl effect.

Some exemplary embodiments of the invention are explained in more detail below with reference to the drawings. Show it:

the pig. 1-3 tubes, partly in side view

in different embodiments of the connection point between the tube body and tube shoulder;

the pig. 4τ7 tubes with a distinctive formation of the

Connection points between tube body and tube shoulder in plan view and

the pig. 8 + 9 another embodiment of a

Tube with a decorated tube shoulder according to the invention in a side view, partially cut and top view.

As in the main patent, the tube consists of the examples shown

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play through from a hood body 1, a tube shoulder 2 carrying the tube nipple and an annular connection 3, which the tube body 1 is firmly connected to the tube shoulder 2. The tube body 1 is made of thermoplastic plastic or plastic-metal combinations, for example a laminate of polyethylene and aluminum paper-polyethylene film in tubular form or w shape, wherein the film was formed by a iiaht the tubular tube body. The outer diameter of the tube shoulder 2 is kept somewhat smaller than the diameter of the tube body and can be provided as a prefabricated part in a standard or special design. The annular space between the tube body 1 and the tube shoulder 2 is filled, as in the main patent, by injecting plasticized plastic, thus creating the annular connection 3. As in the main patent, the entrained heat of fusion of the plasticized plastic causes the main zones of the tube body 1 and the tube shoulder 2 to melt at the connection point and, after cooling, causes a <3 homogeneous connection 3. The main difficulty here is to design the connection point 3 in such a way that that no transition from the tube shoulder 2 to the connection point 3 and from the connection point 3 to the tube body 1 is visible. It is also difficult to prevent sensitive composite film, as is the case with both

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for example is mentioned above in connection with the tube body 1, no edges in the vicinity of the melting point forms where the appearance is impaired.

According to the invention, the connection 3 is therefore designed by molding or by coloring so that the transition points from the tube shoulder 2 and the hood body to the connection point 3 by the design of the

annoying. binding point3 no longer / emerge.

In the example of Figure 1, the outer surface of the connection point 3 is formed with a beveling through which these transition points alone no longer emerge as before) .. It can also have a different color scheme of the material attached in connection 3, for example in red, gold, silver and the like.

In the example of FIG. 2, the connection 3 is also designed in the form of an annular band, which, however, has a with respect to the tube axial longitudinal riffing carries. Also in In this example, a special coloring of the connection point 3 can also be provided.

In the example of Figure 3, the connection point 3 is with Beliefs and ornaments, for example a serpentine line and two circumferential ornamental lines.

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In this example, too, additional coloring features can be added.

In the examples of FIGS. 4 to 6, the connection 2 is drawn relatively far over the surface of the tube shoulder 2. For this purpose, the tube bottom shoulder can have corresponding depressions from the outset. But it is also possible that yourself Place parts of the connection 3 extending over the tube shoulder 2 onto the smooth conical surface of the tube shoulder 2. In the example of Figure 4 is the connection point

3 with their parts injected over the tube shoulder 2 like this limited that the tube shoulder 2 provides with a star-shaped pattern under the connection 3. In the example of the Figure 5, the injection molded over the tube shoulder 2 parts of the connection 3 are limited so that with the from the Connection 3 providing middle parts of the tube shoulder 2

^ results in a flower pattern. To achieve a particularly beautiful one In such cases, you will look like the characters

4 and 5 reproduce, preferably additional color features use, so make the tube bottom 2 and the connection 3 in different colors.

In the example in FIG. 6, the connection 3 nfc engages an annular area relatively far beyond the tube shoulder 2 _#. This annular area bears ornaments on the outer surface.

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In a modification of this, however, the ornaments can also be pre-formed on the tube shoulder 2 itself and through the Compound 3 be overmolded. Compound 3 is made of transparencies or lightly colored in this pallet Manufacture plastic.

Another modification is shown in Figure 7. In this case, the tube shoulder 2 overlapping part of the connection, Binding 3 as a narrow ^ ring than in the example in the figure 6 trained. On the tube shoulder 2 or on the surface of the annular area of the connection 3 can according to this example lettering or embossing can be provided. It is also conceivable that the labels or To apply embossing as depressions in the tube shoulder. For this purpose, the tube shoulder would be made of light-colored, for example white, material and the connection 3 would be made of im to form essential transparent, slightly colored material. It would then be the lettering or embossing of the Shoulders appear in a stronger color in the edge area of the tube shoulder 2 that is overlapped by the connection 3.

In the example of Figures 8 and 9, the tube shoulder 2 is practically on its entire shoulder surface with the connection 3 additionally covered. That forming the connection 3 « In this example, the material is transparent, possibly light

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colored. On the tube shoulder 2 is an annular decoration carrier 4, for example a printed paper ring placed, which is then enclosed all around by the tube shoulder 2 and the connection 3. The metal ring offers In addition to the decorative effect, it also has the advantage of an additional diffusion barrier.

It is also possible to design the decoration carrier strip 4 as an imprint applied directly to the tube shoulder 2, which is covered by the connection 3 and protected against abrasion and damage. Also such an imprint can optionally be designed as an additional diffusion barrier.

3Ü9819 / 04V »

Claims (1)

215Α6Π? Claims 1. Process for the production of hollow bodies, in particular Tubes made of plastic or plastic-metal combinations, "in which a tube body of a certain length from a» Endless hose cut off or from a foil blank assembled into a tube, fed to a holding mandrel and connected to a prefabricated tube shoulder, the connection of the tube body and Tube shoulder is made by connecting material that plasticizes in a manner known per se by heat where the connecting material is almost up to the decomposition temperature range on transition to the sprayable state, However, at least to the extent that its heat capacity is sufficient, the tube body and the tube shoulder in the connection plasticizing area, heated and only directly at the junction of the tube body and the tube shoulder is attached in the form of a ring, characterized in that the connection point (3) of the tube body (1) and tube shoulder (2) as a striking contrast forming intermediate member is formed. 2. The method according to claim 1, characterized in that the connection point (3) with a distinctive surface area - 2 3Ü9819 / 0Ä78 21546η: * Ι "» τϊ. "" Ιν! ' .. '■ i, 4s -r.ifii-it it -i-jlt -1-2 Ui. - !. uliti · l'ii! -T -.! T.: Hh ■ 1 I \,!; I ₁ -J:; · -, -.! Ι · \; ..; - ■ <> 61 ΐ: Ϊ ii; " * F2 -42 " design is trained. 3. The method according to claim 1 or 2, characterized in that that the material of the connection point is provided with additives for distinctive coloring. 4. The method according to any one of claims 1 to 3, characterized in that indicates that the connection point (3) is made of transparent material and the prefabricated one Tube shoulder (2) is provided with labels, prints or decorations (4) and / or is colored. 5. The method according to any one of claims 1 to 4, characterized in that that the connection point (3) is shaped as a circular ring. 6. The method according to any one of claims 1 to 5, characterized in that that the connection point (3) is formed as a circular, diagonally corrugated ring. 7. Method according to one of claims 1 to 5 »characterized in that that the connection point (3) is designed as a circular, carbide-toothed ring. 8. The method according to any one of claims 1 to 5, characterized - 3 309819 / Ö478 ORIGINAL INSPECTED 215.46Π? I ', <!. 'I entered, η «Mt <.-" W -. <I ..:. Kn I'u ι, 1 .. lt> -r HoIv 1 "I \. ϋ ..'-. , · '■. i Λ indicates that the connection point is shaped as a circular ring provided with ornaments will. 9 · The method according to one of claims 1 to 5t daduroh characterized, that the junction with labels is provided 10, method according to one of claims 1 to 4 *, characterized in that the connection point (3) extends over the upper side of the Eubenso shoulder (2) will, 11, method according to claim 10, characterized in that the connection point (3) with the tube bottom shoulder (2) is bent in and merges into this in a star shape. 12, the method according to any one of claims 1 to 10, characterized characterized in that the connection point (3) is included in the tube bottom shoulder (2) and with ornaments, Floral patterns and / or lettering is provided » 13, method naoh one of claims 1 to 12, ^ characterized in that that the material for the junction (2) pigments for distinctive coloring, for example goldbronois or ailberbronoe, to be mixed in ". cn; - 21546Π? Method according to one of Claims 1 to 12, characterized in that the material for the connection point (3) is composed of a differently colored gemzseh, which when reworked a marble baw. Forms mother-of-pearl effect, 15t method according to any one of claims 1 to 14, characterized , characterized that in the junction at least an element acting as an additional diffusion barrier is inserted. Blank page