Paper spreader

The two-layer closure lid design addresses manufacturing and attachment challenges by integrating recyclable fibrous material for tamper evidence, enhancing container security and sustainability.

EP4725858A1Pending Publication Date: 2026-04-15PRATOPAC GMBH
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
PRATOPAC GMBH
Filing Date
2025-10-09
Publication Date
2026-04-15

AI Technical Summary

Technical Problem

Existing closure lids for containers, particularly cardboard containers, face challenges in manufacturing and attachment, lacking efficient integration of functional elements and tamper evidence.

Method used

A two-layer closure lid design with an outer part and inner part, where the inner part's opening is covered by the outer part's closure element, allowing independent manufacturing and functional interaction, featuring a recyclable fibrous material closure element that provides tamper evidence.

Benefits of technology

Enables efficient manufacturing, secure attachment to containers, and provides tamper evidence through a recyclable closure element that remains connected until first use, ensuring product integrity and sustainability.

✦ Generated by Eureka AI based on patent content.

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Abstract

Closure lid (7) for containers (1), in particular cardboard containers, wherein the closure lid (7) can be arranged on a top side of the container (1) and has a closable dispensing opening, characterized in that the closure lid (7) is designed in two layers and has an outer part (2) with a closure element (3) and an inner part (5) with an opening, wherein at least the opening in the inner part (5) can be covered by the closure element (7) of the outer part (2).
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Description

[0001] The invention relates to a closure lid for containers, in particular cardboard containers, wherein the closure lid can be arranged on the top of the container and has a closable dispensing opening, according to the features of the preamble of claim 1. The invention also relates to a manufacturing method according to the features of the preamble of claim 2.

[0002] From DE 195 06 953 A1, a closure lid for containers, in particular cardboard or tin cans, is known, wherein the closure lid is designed in the form of a push-in lid with a lid surface which transitions at its edge into a circumferential wall section arranged approximately perpendicular to the lid surface, which ends in an inwardly directed gripping section and wherein the circumferential wall section has an outwardly projecting support edge in its upper area, wherein furthermore the closure lid consists of a one-piece cardboard, cardboard composite or the like and wherein one or more dispensing and / or dispensing openings are formed in the lid surface and the dispensing and / or dispensing opening can be closed by a closure flap.

[0003] The invention is based on the objective of improving such a closure lid with regard to its manufacture and attachment to the container.

[0004] This problem is solved by the features of claim 1. Furthermore, a manufacturing method according to claim 2 is proposed.

[0005] With regard to the closure lid, the invention provides that the closure lid is designed in two layers and has an outer part with a closure element and an inner part with an opening, wherein at least the opening in the inner part can be covered by the closure element of the outer part. This allows the two parts to be manufactured independently of each other and provided with their functional elements (closure element and opening). After the two parts are brought together (either sequentially when attached to the container or beforehand, if both parts are brought together, in particular bonded, before being attached to the container), the functional elements interact. In particular, the opening is closed by the closure element before the container is used and can be closed again after use.The closure element, particularly designed as a tab in the opening, serves as so-called "tamper evidence" because it remains connected to the lid until the container is first opened. Furthermore, the closure element can be designed as a diffuser or as a flat insert, preferably in one end of the container. The inner part of the closure element, particularly the diffuser, may (but need not) have a smaller diameter than the outer part. For sustainability reasons, the closure element according to the invention consists entirely of fibrous material, such as cardboard, paper, and the like, making it recyclable. If the closure element is secured to the container by a crimp, it preferably has no elements (areas) protruding beyond the crimped edge.

[0006] With regard to the manufacturing process, the invention provides that the closure lid is manufactured in two layers and has an outer part with a closure element and an inner part with an opening, wherein at least the opening in the inner part can be covered by the closure element of the outer part, and wherein the outer part is permanently connected to the inner part, in particular by gluing, and is then connected to the container, in particular its upper circumferential edge, in particular by gluing and / or by means of a crimping.

[0007] For further design details of the locking element and / or the manufacturing process, please refer to the figures.

[0008] The Figures 1 and 2 show components of the arrangement made from container ( Figure 1 ) and locking element ( Figure 2 ). Figure 1Shows a paper tube (forming an example container 1). Left: 3D view, right: section. A crimp is added during assembly. Figure 2 The upper part shows an outer part 2 of the closure lid with closure element 3 (for example, made of punched areas as tabs including folding edges 4 for actuating the tab). Figure 2 Below shows an inner part 5 of the closure lid with a closure 6 of an opening or (not shown) an open opening (open after manufacture or with a punched area for the opening, thus without a closure). Figure 3The figure shows the construction of the diffuser disc (generally the closure cover, designated with the reference number 7) in various views. The outer part 2 is connected to the inner part 5 (for example, by gluing, pressing, or the like). In addition to the discs as the base body of the closure element 7, the closure 6 of the opening in the inner part 5 (red or dark in the three right-hand illustrations) is connected to the overlying, preferably larger, tab 3 of the outer part 2. This is omitted if the opening in the inner part 5 has no closure, i.e., if it has been removed beforehand, for example, by punching it out. Figure 4Figure 1 shows the construction of the container 1 with the inserted closure element 7. The closure element 7, in particular designed as a diffuser, is placed in the container 1, in particular the sleeve, and permanently and irrevocably fixed, for example, by means of a crimp 8. Additionally or alternatively, an adhesive 9 (green or dark in the lower illustration) can be applied from the inside for fixation. Figure 5Figure 1 shows an application of the container 1 with a closure lid 7 featuring a so-called "tamper evidence." By actuating the closure element 3 of the outer part 2, preferably by lifting the tab 3 in the outer part 2, the closure 6 (in particular the tab) of the opening in the inner part 5 is detached (initial opening). The entire opening is thus released, and the contents of the container 1 can be emptied. When the tab 3 of the outer part 2 is returned to its original position, the opening (formed by both the outer part 2 and the inner part 5) is again closed by the tab 3 and can be reopened. This creates a visible initial opening that protects the product in the container 1 from external influences and simultaneously serves as a tamper-evident seal.Once the tab 3 in the outer part 2 (and, if present, the closure 6 of the opening in the inner part 5 connected to the tab 3) has been actuated for the first time, this is visible to the consumer and shows him that the container 1 has already been opened. Reference symbol list

[0009] 1. Container 2. Outer part 3. Tab 4. Folding edges 5. Inner part 6. Closure of the opening 7. Closure lid (also referred to as closure element) 8. Flanging 9. Adhesive

Claims

1. Closure lid (7) for containers (1), in particular cardboard containers, wherein the closure lid (7) can be arranged on the top of the container (1) and has a closable dispensing opening, characterized by the fact that the closure cover (7) is designed in two layers and has an outer part (2) with a closure element (3) and an inner part (5) with an opening, wherein at least the opening in the inner part (5) can be covered by the closure element (7) of the outer part (2).

2. Method for closing a container (1), in particular a cardboard container, with a closure lid (7), wherein the closure lid (7) can be arranged on the top of the container (1) and has a closable dispensing opening, characterized by the fact thatthe closure lid (7) is manufactured in two layers and has an outer part (2) with a closure element (3) and an inner part (5) with an opening, wherein at least the opening in the inner part (5) can be covered by the closure element (7) of the outer part (2), and wherein the outer part (2) is permanently connected to the inner part (5), in particular by gluing, and is then connected to the container (1), in particular its upper circumferential edge, in particular by gluing (8) and / or by means of a crimping (9).

3. Closure lid (7) for containers (1) according to claim 1, characterized by the fact that the closure lid (7) is firmly attached to the upper edge of the container (1) by means of an adhesive (8).

4. Closure lid (7) for containers (1) according to claim 1 or 3, characterized by the fact that An adhesive (8) is present between the outer part (2) and the inner part (5) for joining these two parts (2, 5) to form the closure lid (7).

5. Closure lid (7) for containers (1) according to claim 1, 3 or 4, characterized by the fact that The closure lid (7) is firmly attached to the upper edge of the container (1) by means of a crimp (9).

6. Closure lid (7) for containers (1) according to one of the preceding claims, characterized by the fact that the closure element (7) preferably consists of 100% of a fibrous material.

7. Closure lid (7) for containers (1) according to one of the preceding claims, characterized by the fact that the closure element (7) is designed as a diffuser.

Citation Information

Patent Citations

  • Sealing cap for container, esp. cartons or boxes

    DE19506953A1

  • A lid for a container

    EP3842359A1

  • holder with a flap for tearing open.

    NL86150C

  • Lid with removal opening for closing containers and method for producing the lid

    US20060289542A1

  • Disposable rolled rim cup and lid closure

    US5588552A