DE2544479A1 - Plastic barrel with cover - formed from two profiled halves of flange elements welded together for ease of manufacture - Google Patents

Abstract

Plastic barrel closable by a plastic cover has an edge directed outwards adjoining the lower tensioning cuff. The upper horizontal ring surface forms the base surface for the sealing ring held by the plastic cover. Behind the ring surface, a second flat cuff, inclined inwards is fitted. The barrel edge is pressed together after the extrusion process, in the horizontally divided extrusion, from within the edge centre area by pushing together the profiled halves in an axial direction of the barrel to a closed flange (4). The opposite edge inner surfaces are welded together.

Description

Lid barrel

The invention relates to a lockable with a plastic cover Plastic barrel with a radial connection to the lower clamping collar outwardly directed border, the upper horizontal ring surface of which is the contact surface forms for the sealing ring held in the plastic cover, behind the ring surface a second, flat inwardly inclined cuff is provided, according to patent no. 2 008 111.

When the subject of the aforementioned patent, the barrel head rises from the The barrel belly gradually and merges into an almost vertical clamping collar. The upper end of the clamping collar has a stepped bend to which the border adjoins. At the end of the border one rises flat inwards directed second cuff, which merges into a hook-shaped recess and then swings into the edge of the opening.

The rigid outer edge of the lid, divided by segment incisions engages with its outer legs adapted to the clamping collar and border form-fit into the annular space of the clamping collar. There is a Annular bead is provided which snaps into place behind the recess against the second cuff. The sealing ring fitted between the annular bead and the inner wall of the cover lies firmly against it the horizontal ring surface of the border.

The border protruding from the barrel jacket, however, acts when it occurs vertical stacking load, as when several full barrels are stacked on top of each other arises, like an expansion fold, which under load in the axial direction of the barrel is squeezed. This can cause the stack of barrels to topple over and the lid off its sealing position can be solved.

It was also undertaken to reinforce the barrel border over the Provide evenly distributed hemispherical indentations on the circumference of the border. The stacking load goes almost steplessly from the opening edge over the clamping collar into the barrel jacket. Compression of the border is largely eliminated.

The disadvantage here, however, is that the indentations are not arbitrary can be designed deep to make the lid attachment more secure. Even the radial rigidity of the barrel border is reduced by the indentations. That's why the border area must be stabilized by adding material in the radial direction. After the barrel has been emptied, residues also settle in the border fixed.

It is about the task of addressing these disadvantages at the same time To largely eliminate manufacturing facilitation.

This object is achieved according to the invention in that the barrel border after the blowing process in the barrel shape horizontally divided in the border area by moving the mold halves together in the axial direction of the barrel to form a closed one Flange is compressed, with the opposing border inner surfaces are welded together.

In order to be able to clamp or unclamp the lid on the barrel opening, the cover segments must be pivoted outwards. Is it comparative? solid cover material, this pivoting process is hindered.

To remedy this disadvantage, in an embodiment of the invention suggested that on the outer circumference of the lid opposite the edge of the flange one Material weakening notch is provided.

The material left between the bottom of the notch and the inside of the edge acts as a film hinge around which the lower edge of the lid can be pivoted outwards can.

In the drawing, an embodiment of the invention is for example shown.

It shows: FIG. 1 a longitudinal section through a barrel with the clamped open Lid in the cutout.

From the barrel belly 1 of the barrel, the barrel head gradually rises and merges into an almost vertical clamping collar 3.

The upper end of the clamping collar 3 goes into the outward one Flange 4 over. At the end of the flange 4 rises a flat inwardly inclined second cuff 6, which merges into a hook-shaped recess 7 and then Swings into the opening edge 8. The one divided by the segment incisions The dimensionally stable outer edge of the lid engages with its clamping collar 3 and the flange 4 adapted outer legs 19 form-fit in the annular space of the clamping collar 3 a. An annular bead 10 is provided on the bottom of the lid, behind the recess 7 engages against the second sleeve 6. The one between the annular bead 10 and the inner wall of the cover fitted sealing ring 12 lies firmly against the border. Behind the inner edge 13 begins at 14 of the elastic part of the cover 2, which after the indentation 15 over a lid fold 16 merges into the trough-shaped, elastic lid base 17.

Between the individual segment sections are evenly across the Holding loops 18 distributed over the edge of the lid are provided. The lower free end of the straps 18 dips into the space between the tongues bent outwards at right angles 21 a.

The tongues 21 are only at isolated locations on the edge legs 19 expanded to the form shown in the drawing.

In the other edge legs, the tongues end just behind the Loops 18. Through the tongues 21 and the loops 18 falling out of the prevents loose tightening strap 11 from the edge of the lid.

On the outer circumference of the cover 2 opposite the edge of the flange 4 is a material weakening notch 5 is provided.

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Claims (2)

Claims:) 1. Plastic barrel closable with a plastic lid with one adjoining the lower clamping collar, radially outwards directed border, the upper horizontal ring surface of which is the supporting surface for the Forms the sealing ring held in the plastic cover, with one behind the ring surface second, flat inwardly inclined cuff is provided, according to patent 2 008 111, d a d u r c h g e -k e n n n z e i c h n e t that the barrel border after the blowing process in the blow mold, which is horizontally divided in the border area, by moving it together the mold halves are pressed together in the axial direction of the barrel to form a closed flange (4) is, whereby the opposing border inner surfaces are welded to one another are. 2. Lidded barrel according to claim 1, d a d u r c h g e k e n n -z e i c h n e t that on the outer circumference of the cover (2) opposite the edge of the flange (4) one Material weakening notch (5) is provided.