DE718158C - Process for producing hollow bodies closed on one side from paper, cardboard or the like with a bottom by winding - Google Patents

Description

Process for producing hollow paper bodies closed on one side, Cardboard or the like with a bottom by winding When producing hollow bodies closed on one side, consisting! of a coiled coat and a drawn bottom, it has already been suggested to wrap the flange of the drawn bath between the layers of the jacket in such a way as to that the bottom is firmly embedded and glued between the paper layers.

It has now been shown that for special cases for higher loads the connection can also be carried out on the floor instead of on the side walls. To this According to the invention, the purpose is the paper, which is pre-sharpened on one edge and with glue. is coated, placed by a known method around the winding mandrel so that it is about 8 to z o mm protrudes: When the mandrel is rotated for the first time, the protruding sharpened edge of the jacket paper bent over to the end wall of the mandrel, which is very easy, because the paper has no tension due to the weakening. It can then either a drawn or an ordinary floor can be used. By Keep turning. of the winding mandrel and turning over the edge as in the first working period the bottom is firmly clamped, which is the case with vessels intended for liquids is very important. In order to get a nicer look, one wants the vessels still re-profiling, this work will be thanks. of the tightened transition very much facilitates and gives a clean look.

It is of course also possible - the weakened paper layers of the coat - on To lay the floor only inside or only outside, whereby the weakened paper greatly facilitates the rapid intimate connection. Such manufactured Bodies can have any cross-section. such as pasta cans, vessels, flat B.atterimu- # sleeves, square cans, etc., have these to provide even better sealing in any or can be impregnated or painted in a known manner.

A milk bottle is known which consists of an inner paper tube and consists of two separate strips of paper wrapped in a spiral shape on top of each other. The bottom is attached to the paper tube and the one with the paper strips is wrapped. This paper bottle thus consists of the tube and two separate paper webs, while the subject matter of the invention consists of a paper web is wrapped. In addition, the paper webs cannot be conically sharpened downwards be, while the bottom flange is sharpened conically upwards as in the subject of the invention is.

There is also a paper container known in which the ends on a Certain I-1t *) are made tapered by pressing.

It is also known a further design of this container at the ends are also made tapered by pressing. On the rejuvenated The ends of the lid and the bottom are attached. The manufacture of such paper containers is only possible in different work steps, because the container is made by winding the sleeve gets wet and must first be dried for pressing while the object the invention claims only one operation.

There are also known methods for producing folding boxes, in which the bent wall parts are conical downwards. are sharpened. The production Such folding boxes are made in a completely different white than that of the object of the invention, which is produced by a winding process.

It is also a method of making oval ones by yourself Cardboard cases with a wound closure end for glasses and the like. Known in which the Body is made of one piece, wherein the edge forming the closure, is ground and cut in a known manner.

A method is also known to produce round boxes with Soil, in which the wrapping of the bottom flange between the layers of a The wrapped jacket is cut to size. Through this training you will be on top the bottom flange formed inside and outside protruding elevations. The conical Sharpening of the bottom edge as well as the ends of the paper wraps are completely missing. The bottom flange is also wrapped in a different way than in the subject matter of the invention.

Furthermore, methods for producing hollow bodies from paper o. Like. Known in which when winding a multilayer hollow body from a Cut over a mandrel, the edge of the blank cut out during winding is folded over on the face of the mandrel. to form the bottom. After these Method, the hollow body is probably also produced in one operation, with however, the bottom is formed by turning over the jagged edge while at Invention part and the bottom is inserted and wrapped up.

There are also methods of paving the floors of Holzgäfälleii known from wood veneers, in which the edges of the multi-layered cladding are tempered in order to achieve a better laying down. .also with this version The ends of the winding are made of wood veneer and are conical, as is the case with the I? rlindungsartikel closed.

Cardboard boxes are also known. in which both the flanges des B, odevs as well as the end of the container jacket are tapered. the This cardboard container is produced in a different way than that of the hollow body made of paper and the like according to the subject matter of the invention.

The following are therefore known for the subject of the invention: the ab (flirägte Flanges of the bottom as well as the bevelled end eleven of the vessel jacket.

Patent treasury is characterized with regard to claim i in i Method claimed only for the entirety of the features specified there, not .so independent protection for its individual characteristics or for the association only some of these features. The remaining claims are a series of sub-claims, i. H. they are intended to be patent protected only in connection with the entire subject matter of the claim i enjoy together, not an independent protection or protection in connection With a different method than that of claim i.

Some boxes are shown as exemplary embodiments in the drawing shown, which are produced according to the claimed process, namely Fig. i a vessel with a bottom embedded between the layers with raised i, in a familiar Wise tapered flange, Fig. Z a vessel with embedded between the layers disc-shaped bottom, Figure 3 a vessel in which the disc-shaped bottom is glued inside is, Fig.q. a vessel in which the bottom is glued on the outside. In the figures mean a the outer layer, b the inner layer of a z. B. two-layer Mantle, wound from a single blank, c imd d the sharpened ends of this Cut to the pointed flange pointing towards the inside of the container during winding was uncovered, and e the floor.

Claims (1)

PATENT CLAIMS: i. Process for the production of hollow bodies closed on one side from paper, cardboard or the like with a wrapped bottom by multilayered winding of a blank to form the vessel jacket around a core, characterized in that the conical edge (c, d) protruding from the core, sharpened conically and provided with adhesive of the jacket (ia, b) is formed during the winding by bending against the end faces of the core to form a tapered multilayer flange to which or between the layers of the base (e) is attached in the same operation. a. Method according to claim i, characterized in that after winding a jacket layer (b) or a part thereof and folding over the associated weakened edge (d), the base (e) is placed and the winding of the jacket and the folding over of the edge are continued until the Edge of the bottom (e) is embedded and glued between the layers (d and c) of the jacket flange (Fig. I and a). 3. The method according to claim i, characterized in that the bottom (e) is placed on the end face of the winding core before the start of winding and is attached to the inside of the multilayered inner flange formed from the weakened outer edge by gluing (Fig.3). q .. procedure. according to claim i, characterized in that, after the jacket has been wrapped and the sharpened edges (d, c) have been bent over, the base is attached to the outside of the multilayer jacket flange formed from the weakened jacket edge by gluing (Fig. q.). 5. The method according to claim i to q., Characterized in that the hollow bodies are impregnated or painted in any desired or known manner for further better sealing.