DE1761942A1 - Packaging container for liquids - Google Patents

Description

R. 9194
17.7.1968 Gl / Km

Attachment to

Patent application

ROBK R T BOSCH GMBII, Stuttgart 'W, Breitscheidstrasse 4 Packaging containers for liquids

The invention relates to a packaging container consisting of from a cylindrical sleeve made of stiff, open at both ends Material and a thermoplastic inner container inserted therein ι plastic with a kUf-el-section-shaped bottom part.

The inner container of one for example by the British patent 1 083 6? 4 known packaging container of this Art hnt an opening equal to its cross-section, which is closed by a locking plate or a child's back cover.

This container is well suited for packing fatty products, for example oil, butter, mayonnaise and the like., since he grants the contents a high level of protection and is also stable.

109852/0568 - 2 -

Robert Bosch Grcbii Stuttgart

176

The object of the invention is to provide a pressure-resistant packaging container for liquids, especially for beer. This container should have the lowest possible weight and be designed in such a way that it is compatible with liquids containing gas Pressure.

This object is achieved according to the invention in that the Inner container has an opening towards οten to his Head part has a tapering neck part, whose '.vanddicke is stronger than that of its ßauchteilß and encompassed by the sleeve which is integral with the belly part and the bottom part.

The container according to the invention is derived from the ideal shape for pressure containers - the sphere. The sleeve, which gives it an extraordinarily good quality assurance, surrounds its cylindrical, fraction, pressure-resistant in the manner of a corset. The container is easy to handle and takes up little space for transport. The container is also easy to manufacture. Its inner container is preferably blown directly into the sleeve using the blow molding process, with blow molded parts being used to shape the base and the neck and head. Due to the different thicknesses of the inner container, it is advantageously made from an injection-molded part using the stretch blow molding process. The biaxial stretching makes the inner container extremely pressure-resistant and tight. The sleeve, which is made of relatively cheap material, also offers a large area for printing inheritance and information.

In order to permanently connect the inner container to the sleeve, the Inner container according to a further feature of the invention at least an information that encloses the corresponding formations of the sleeve. An embodiment in which the sleeve is crimped at its upper edge and a constriction of the inner container surrounds this liördelung.

. - 3 -109852/0588 bad original

hobert ro sch GmbH _{K #} ^ _{94 G1 / Kffi}

Stuttgart

In another embodiment of the invention, the sleeve has openings, engage in the wart-like formations of the inner container. The fill level of the container can be checked with the eye. The breakthroughs can be in rows of holes or special ^ ins Eye-catching arrangement can be provided.

Two exemplary embodiments of the invention are shown in the drawing and are described in more detail below. us show:

Fig. 1 shows a first embodiment of a packaging container

partially cut in elevation and FIG. 2 shows a second embodiment of a packaging container partially cut in elevation.

In a top and bottom open sleeve 1 with a circular ring Cross section wrapped from cardboard is an inner container 2 made of thermoplastic material. Ιλ r. Bottom part 3 of the Inside container 2 has the shape of a segment of a sphere. The lowest Zone of the bottom 3 ends about 1/2 to 1 cm above the lower edge of the sleeve 1. The belly part 4 of the inner container adjoining the bottom 3 2 has a cylindrical shape and rests on the inner wall of the sleeve 1. A neck part 5 of the inner container 2 protrudes the upper hand of the sleeve 1 and tapers conically towards the hand of an opening 6.

The hand of the opening 6 of the inner container 2 it-: t by a radially protruding Fl; Reinforced nsch 7 and forms with this 6th head part. Between its shark 5 and its liauchteil 4, the inner container has a constriction 8 into which the flanged upper hand of the sleeve 1 engages in a form-fitting manner. A cover plate 10 with a tear-off tab 11, preferably made of aluminum with a “plastic” coating, is sealed onto the flange 7.

The i.and of the inner container is in its various functions

109852/0568 '

■ "· ^R ' ^{9194 G1 / Km}

different thickness. It is about twice as thick in the area of the neck part 5 and about one and a half times as thick in the area of the neck part 3 as in the area of the belly part 4. To absorb the closing pressure, the hand of the opening 6 and the flange 7 are even thicker than the wall of the neck part 5. ·

The packaging container described according to Pig. 1 becomes like "follows manufactured:

Into a split blow mold with an upper opening wildly next the sleeve 1 inserted. Then it is in the opening of the blow mold a thermoplastic preform, which already has the flange 7 of the later internal filter, inserted into the opening of the mold, so that the flange 7 rests on the mold. Afterward the preform is drawn in length with a stretching die and inflated with blown air, so that its liauchteil on the inner wall of the sleeve 1, its bottom part on the bottom of the mold and its llalteil rests on the upper part of the inner wall of the blow mold. The constriction 8 is formed by placing the corresponding part of the inflated preform on the flanged hand 9 of the Sleeve 1. The mold is then opened and the finished packaging container removed.

The packaging container according to FIG. 2 is essentially constructed in the same way as that according to FIG. 1. In a modification of this, however, it is used to hold the inner container 2 in the sleeve 1 through openings 12 in the form-fitting, in the wart-like formations 13 on the belly part 4 of the inner container 2 engage. The openings 12 can be arranged on the sleeve 1 in various arrangements, for example one above the other, next to one another, in a circle or in the form of a letter on the sleeve 1.

The sleeve 1 h;> t in this embodiment has a flanging on its lower hand 14. The inner container 2 rests with a shoulder 1b on your upper! (on the sleeve 1. On the ν ffnun ^ of the inner

1098 5 2/0568 ^ o OBVGiNAf

aobert i ^ osch (, mbh _{R <31Q4 G1 / Kn]}

Stuttgart

Atinlters 2 a cap 16 is attached, which with a protruding Kand grasps the paddock 7.

The "packaging container according to i'ig. 2 is confused in the same way manufactured like that of FIG. 1

BATH ORIGINAL

109852/0568

Claims (3)

Kobe rl i) O:; ch GmbH, n-i ^ * η 9194 claims 1. Packaging container, consisting of a double-sided open, cylindrical sleeve. stiff material and one in it inserted inner container made of thermoplastic material • with a spherical segment-shaped bottom part, characterized that the inner container has an iialteil (5) tapering upwards to its head part having an opening (6) has, the wall thickness of which is thicker than that of his of the .hülse (1) unmounted abdominal part (4) and which is integral with the peritoneum (4) and the bottom part (3). 2. Packaging container according to claim 1, characterized in that that the neck part (5) tapers conically. ψ 3. Packaging container according to claim 1 or 2, characterized in that that the .Vanddicke of the neck part (5) iat twice as strong as that of the belly part (4). 4. Packaging container according to one of claims 1 to 3, characterized in that the inner container in the region of its belly part (4) Anformun ^ cn (8,13) h; it, the form-fitting form-fitting (9,12) enclose the sleeve (1). ¹ J. Verpaokun ^ belril ter according to claim 4, thereby ^ ekcnhzrichn »t, that the Inncnbeiffilte * below hisis ha I s-.tt i 1 r < (?) in the t; bor ~ 109852/0568 BATH Robert JiOHch (Jmbit
Stuttgart transition zone to the abdominal part (4) has a constriction (8) into which a Uingbulst (9) engages at the upper end of the sleeve (1). 6. Packaging container according to claim 4, characterized in that the inner container in the region of its «belly part (4) has wart-like formations (13) which engage in openings (12) in the sleeve (1). Λ 109852/0568