SE444424B

SE444424B - A locking device for a packing container

Info

Publication number: SE444424B
Application number: SE8403588A
Authority: SE
Inventors: L Larsson
Original assignee: Akerlund & Rausing Ab
Priority date: 1983-11-07
Filing date: 1984-07-06
Publication date: 1986-04-14
Also published as: SE8403588D0; SE8403588L

Abstract

A locking device for a packing container (14), involving at least one primary covering unit (11, 11') in an opening in the packing container, as well as an attachable rim part (12, 15) surrounding the said unit which is connected to the opening.The rim part has a double layer design preferably displaying a substantial frustum-type surface sheathing which is designed for mutual pressure and for pressing against the rim of the opening.<IMAGE>

Description

8403588-og till bifogade ritningar, där _ Fig. l«i delsnitt visar en behällarförslutning enligt principerna för uppfinningen utförd med komiskt _ äntringsparti, V Fig. ¿2 visar en trapetsformig remsa avsedd att formas till stympad konisk tratt och bilda väsentligen slät an~ 'liggníngsyta mot förpackningsbehâllarens insida; Fig{_'3 visar en formsprutad folierad förslutning, Fig., 4 visar en förslutning med konisk dubbelsarg, och Big. 5 visar förslutningen i förseglat tillstånd. 8403588 to the accompanying drawings, in which Fig. 1 shows in partial section a container closure according to the principles of the invention made with a comic entrance portion; Fig. 2 shows a trapezoidal strip intended to be formed into a truncated conical funnel and to form a substantially smooth surface. 'lying surface against the inside of the packaging container; Fig. 3 shows an injection molded foiled closure, Fig. 4 shows a closure with conical double rim, and Big. 5 shows the closure in a sealed condition.

I Fig. 1 visas en äntring underlättande, konisk randdel lå. Randdelens sarg 15 kan vara utformad av eller täckt med en banderoll 25 enligt Pig. 2. En sådan, till trapetsform utstansad banderoll ger i det närmaste helt slät förseg- ' lingsyta. Även om ändförslutningarna i de visade utföringsfor- merna helt är tillverkade av flexibelt, formnart material inses att andra bearbetningstekniker, exempelvis formsprut- ning, kan insättas som alternativ eller för framställning av vissa delar, exempelvis randdelen, hos ändförslutningen.Fig. 1 shows an entry facilitating, conical edge part lay. The edge 15 rim 15 may be formed of or covered with a banner 25 according to Figs. Such a banner, which is punched in a trapezoidal shape, gives an almost completely smooth sealing surface. Although the end closures in the embodiments shown are entirely made of flexible, molded material, it will be appreciated that other machining techniques, such as injection molding, may be used as an alternative or for making certain parts, such as the edge portion, of the end closure.

I Fig. 3 visas en variant där lockspegeln ll består av _relativt tjockt material och till exempel är formsprutad och därefter folierad med Al-folie ll' eller motsvarande.Fig. 3 shows a variant in which the lid mirror 11 consists of a relatively thick material and is, for example, injection molded and then foiled with Al foil 11 'or the like.

Tanken är att åstadkomma ett dubbelstikt 12 som är samman- pressbart inbördes och anpressbart mot hylsans väggar eller den öppningskant mot vilken förslutningen skall ansättas.The idea is to provide a double piece 12 which is compressible with each other and pressable against the walls of the sleeve or the opening edge against which the closure is to be applied.

Sammanpressning fås exempelvis genom.att spegeln ll pressas axiellt inåt behållaren samtidigt som sargen 15 förhindras att röra sig in i hylsan. _ _ _ _ _ Sådan kontrollerbar anpressning kan fås genom över- dimensionering av dubbelskiktet relativt öppningen, åtmin- stone i vissa områden av dubbelskiktet, till exempel genom att nämnda skikt utförs med stympat konisk form enligt Fig. 4. Å n 'Fig.,5 visar effekten av sammanpressningstrycket - in~ bördes mellan skikten och mot hylsan - efter svetsning.Compression is obtained, for example, by pressing the mirror 11 axially inwards towards the container at the same time as the rim 15 is prevented from moving into the sleeve. Such a controllable pressing can be obtained by oversizing the double layer relative to the opening, at least in certain areas of the double layer, for example by said layer being made with a truncated conical shape according to Fig. 4. Å n 'Fig., 5 shows the effect of the compression pressure - interposed between the layers and against the sleeve - after welding.

Ofta bortfaller det visade "hâlrummet“, men i Fig. 5 har det markerats i illustrerande syfte såsom erhållnart resul- _tat genom kontrollerbar tryckpâläggning i svetsstället.The "cavity" shown is often omitted, but in Fig. 5 it has been marked for illustrative purposes as obtained by controllable pressure application in the welding site.

Claims

1. s4o35ssèog Pê? §§ÏK5ëY Il., Connection to packaging container (14), comprising at least one, an opening in the packaging container mainly covering element (ll, ll '), and said element surrounding and attachable to the edge of the opening , peripheral part of the covering element constituting an edge element (12, 15), characterized in that the edge part is designed as one of the edge of the opening, for double-layered mutual arrangement and pressing against the edge (12, 15). '

2. A closure according to claim 1, characterized in that the double layer has a substantially truncated comic mantle surface.

3.4. A closure according to claim 2, characterized in that the edge part, at least in the intended sealing places, is made of metal file or? corresponding to the effect of induction welding and / or Hf «welding.