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EP0208352A1
Expired / Lapsed
EP
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Lid for a container and packing consisting of a container with a lid
Assignee: Wavin BV
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Filing: 1986-06-09
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Granted: —
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Expires: 2006-06-09
Abstract
Abstract In a lid (1) for a container (5) comprising a rim portion (2) for connecting the lid (1) to the container (5) and a middle portion (3) lying inside the said rim portion (2)and being movable in the axial direction relative to the rim portion (2) the middle portion (3) is joined to the rim portion (2) via a bellows-shaped intermediate portion (4) extending substantially in the axial direction. This makes it possible that, when a packing consisting of a container (5) closed by such a lid and filled with a product is subjected to a heat treatment, such as sterilization, the expansion of the gases contained in the packing is entirely taken by the lid (1). The lid may additionally be provided with a closable opening (9) which opening is preferably closed by a drop (10) of a meltable plastics composition.
Inventors
- 👤 Dirk Zijlstra
- 👤 Waldur Hansen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 23:08
CPC Classifications
B; B65; B65D; B65D51/00; B65D79/00; B65D79/005; B65D79/0087; B65D81/00; B65D81/18; B65D81/20; B65D81/2046; B65D81/2053
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
77 words
A lid for a container, comprising a rim portion (2) for connecting the lid (1) to the container (5) and a middle portion (3; 12; 13;) lying inside said rim portion (2) and being movable in the axial direction relative to the rim portion (2), characterized in that the middle portion (3; 12; 13) is joined to the rim portion (2) via a bellows-shaped intermediate portion (4; 4a; 11; 14; 14a) extending substantially in the axial direction.
Claim 2
Dependent Claim
77 words
A lid for a container, comprising a rim portion (2) for connecting the lid (1) to the container (5) and a middle portion (3; 12; 13;) lying inside said rim portion (2) and being movable in the axial direction relative to the rim portion (2), characterized in that the middle portion (3; 12; 13) is joined to the rim portion (2) via a bellows-shaped intermediate portion (4; 4a; 11; 14; 14a) extending substantially in the axial direction.
Claim 3
Dependent Claim
32 words
Lid according to Claim 1, characterized in that the average diameter of the bellows-shaped intermediate portion (4; 4a) decreases from the rim portion (2) in the direction of the middle portion (3).
Claim 4
Dependent Claim
20 words
Lid according to Claim 1 or 2, characterized in that the bellows-shaped intermediate portion (4a) has helical ridges and grooves.
Claim 5
Dependent Claim
34 words
Lid according to one of Claims 1 to 3, characterized in that the middle portion (12; 13) has substantially the shape of a cone having an obtuse apex angle or of a truncated cone.
Claim 6
Dependent Claim
62 words
Lid according to one of Claims 1 to 4, characterized in that the rim portion (2) is provided at least partially, on the side coming into contact with the container (5), with a layer (8) adapted to adhere to the material of the container (5), said layer (8) preferably consisting of a plastics copmposition meltable by the action of heat and/or pressure.
Claim 7
Dependent Claim
19 words
Lid according to one of Claims 1 to 5, characterized in that the lid (1) consists of plastics material.
Claim 8
Dependent Claim
20 words
Packing consisting of a container and a lid fitted to the container, according to one of Claim 1 to 6.
Claim 9
Dependent Claim
63 words
Packing according to Claim 10, characterized in that the lid (1) is fastened to the container (5) by welding or by means of an intermediate layer (8) adhering to the rim portion (2) of the lid (1) and to the material of the container (5), said intermediate layer (8) preferably consisting of a plastics composition meltable by the action of heat and/or pressure.
Claim 10
Dependent Claim
24 words
Packing according to Claim 7 or 8, characterized in that the packing is provided with a closable opening (9), preferably in the lid (1).
Claim 11
Dependent Claim
22 words
Packing according to Claim 9, characterized in that the opening (9) is closed by a drop (10) of a meltable plastics composition.
References Cited (Backward Citations)
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