DE7047995U - PLASTIC STOPPERS FOR SEALING BARRELS AND SIMILAR CONTAINERS, IN PARTICULAR FOR THE STORAGE AND TRANSPORTATION OF GRAINY PLASTICS - Google Patents

Description

DH. IN O. P. WÜBSTHOFF
I) IPL. IN O. O. PULSE

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8 MUNICH 90

description

Company SNIA VISCOSA SOCIETA * NAZIONALB INDUSTRIA APPLICAZIONI VISCOSA S.p.A. in Milan. /Italy.

Plastic stoppers for tightly closing barrels and similar containers, especially for storage and transportation of granular plastics.

The innovation relates to a stopper for essentially tightly closing barrels and similar containers with a circular shape Aueflufiduse, which is predominantly but not exclusively for storing and transporting granular plastics (such as the so-called chips), such as polyamides and the like, are intended, which plastics are withdrawn from the outside atmosphere and under predetermined conditions Humidity conditions, in an inert atmosphere, etc. be kept in bulk.

In particular, the innovation has a stopper as its object, which through special combinations and mutual arrangements its various parts, as detailed below

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is marked, making the plug the cheapest Conditions for a tight seal by close contact of its surfaces with those of the outlet nozzle into which it is inserted is used, for the safety and durability of the closure, as well as for the convenient attachment and removal for opening the container, and the plug at the same time structurally simple and economical, in one piece from a suitable, noticeably elastic, chemically inert and, in any case, resistant under the required operating conditions Plastic is made. The plug according to the innovation is preferably made of polyethylene or an equivalent Synthetic resin.

The mentioned useful combination of effects is the innovation Stopper is essentially given by having a substantially frustoconical part with a small apex angle, which can be inserted into a corresponding part of the discharge nozzle or opening of the container in such a way that between A high pressure is achieved on the contact surfaces, as well as an annular bead which has an engagement undercut a corresponding inner bead of said opening forms, whereby the plug is held in place after its frustoconical T-bar is fully inserted.

This and other besoncu. 3 application and usage characteristics of the idea of innovation emerge clearly from the following description of a preferred embodiment of the subject of the innovation, which is shown on the accompanying drawing.

Fig.1 shows the plug in side view approximately in the half the normal size,

Fig.2 is a cross-section through the stopper along the line II-II of Fig. 3,

Fig. 3 shows the StOpeel in plan view,

Fig.4 illustrates partially and greatly enlarged Stopper and the spout of the container and

Fig. 5 shows similarly to Fig. 4 the attached to the outer eyelet Plug.

The one in a stack of polyethylene - »the like. manufactured plugs has a frustoconical part IO with small apex angles on, which is preferably with small ring förr- »» s can be provided through which the contact is impossible Degree to be improved. This frustoconical »; .eiJ. ends at the top (at its larger base) "it has an outwardly bent edge 14" which is intended to be attached to the edge 16 of the outflow nozzle to come to the plant. At its smaller base, the part 10 is closed by a wall 18, which is the actual Forms closure. In the cavity of the plug, which is open at the top, ribs 20 are provided, by means of which the plug can be removed for removal. can be seized.

Provided below the wall 18 is a cylindrical extension 22 which has a serrated bead 24 on its circumference forms whose largest protrusion defines a circle with a diameter smaller than the diameter of the smaller Base of the frustoconical part 10.

The stopper is designed to work together with an air outlet, which according to FIG. 4 has a frustoconical part 26

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for the intimate contact of the parts 10, as well as an inwardly projecting one toilet 28 uafasst, but which one the lower wulat

'24 en

Formung can be moved away, so that the bead 24 below

₍ Grips the bead 28 of the Auafluo nozzle.

j This intervention is only achieved when the plug

1 is completely inserted into the discharge tube and is there

therefore a guarantee for the proper attachment of the stopper eels. The undercut engagement "wipe the ridges

■ 24 and 28 offers sufficient resistance to

', the automatic loosening of the plug from the outlet

■ prevent, while on the other hand the elastic deformability of the Material is sufficient to allow the container to be opened,

; meanwhile, a leverage effect under one of the ribs 20 and a

I know the pulling force is exerted.

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Claims (6)

Protection requirements 1. Plastic stoppers for tight sealing of outflow dots or openings of containers for the specified or equivalent uses.> characterized by a relatively steeply inclined frustoconical part (1O), which is suitable, due to the axial retraction of the plug into a correspondingly shaped part (26) of the outflow or The opening of the container allows this part to come into contact, as well as by means of projections (24) with corresponding projections (28) the outlet or opening has an undercut engagement form when the plug is fully inserted and the said frustoconical parts (10, 26) are closer mutual contact. 2. Plug according to claim 1, characterized in that the ds.S named projections from one with respect to the frustoconical Partly (10) coaxial annular bead (24) exist. 3. Plug according to speeches 1 and 2, characterized in that because the annular bead (24) has a diameter which is smaller than the smallest diameter of the frustoconical Partly (10) and that he is on the side of the smaller base of said part is located. 4. Plug according to speeches 1 and 2, characterized in that because the annular bead (24) is essentially sagittooth-shaped in the diametrical cross-section, the slope this bead allows the stopper to retract completely -5- temporary elastic material deformation facilitated. 5. Stopper according to one or more of claims 1-4, characterized in that it essentially has the shape of a flat η cup with frustoconical walls owns and about the same height as the smaller base of the Has a frustoconical part an air wall (l8). 6. Plug according to claim 5, characterized in that daA it is about at the level of the larger base of the cone stoepffoi— with part (10) ribs (20), which dsm upper circumference τng cut this part on which ribs the plug-to slight Ent ^, hice from the Ausfluoduse or opening of the Container can be taken. -6-