Paper-based container, suitable for cardboard closures

Abstract

A paper-based food container used to store food in the food industry, characterized in that; - A paper container body (10) made of extruded, coated or plain paper, into which food products are filled. - A support surface (11) located on the top of the paper container (10) and extending horizontally outwards, on which a flat lid made of laminated cardboard can rest on the paper container (10). - An edge bend (12) extending from the outer end of the mounting surface (11) of the lid at an angle to the paper container body (10) and placed on the mounting surface (11) of the lid, whereby the lid is automatically fixed by clamping it onto the paper container body (10).

Description

Technical area

[0001] The invention relates to paper-based food containers in which food is stored in the food industry.

[0002] The invention relates in particular to an extruded, coated or pure paper container onto which a flat lid can be placed by means of an inwardly directed, inverted rim curvature on its upper side. State of the art

[0003] In the food packaging industry, laminated cardboard or aluminum containers are frequently used for packaging ready meals, dairy products, salads, and sweets. These containers, which are usually tray-shaped, are closed with flat lids. These lids are typically made of materials such as laminated cardboard and are attached to the rim of the container using either a snap-fit ​​or hot-melt adhesive (thermal bonding) process.

[0004] Laminated cardboard lids utilize a hot-melt adhesive process (thermal coating) to firmly bond the flat, laminated cardboard containers to the lid, thus preventing food leakage. Attaching the lids to laminated cardboard containers requires additional equipment, resulting in time losses during the sealing process.

[0005] To securely close the flat container made of laminated cardboard, a nailed protrusion is attached to the aluminum lid. This protrusion extends upwards from the top edge of the aluminum container but, due to the nature of the aluminum, can be bent downwards when force is applied. After placing the flat laminated cardboard lid on the aluminum container, it is pressed down by hand onto this nailed protrusion to secure it firmly and prevent leakage. The force causes this vertical protrusion to bend downwards, assuming a horizontal shape and lying flat against the top of the lid. In this way, the flat laminated cardboard lid is pressed onto the aluminum container by the protrusion and secured.However, if the aforementioned protrusion with the bumps is not properly and correctly bent onto the surface of the lid, the lid may open unintentionally and food may leak. Furthermore, contact between aluminum containers and hot food is undesirable from a food safety perspective.

[0006] The flexible ridges used in current aluminum containers, due to the structure of the aluminum raw material, cannot be applied to food containers made of laminated cardboard. This is because the rigid structure of the paper makes manual bending impossible with laminated cardboard containers. With aluminum containers, the user presses the ridged ridge down onto the lid by hand. However, with laminated cardboard containers, the paper springs back and cannot be shaped by hand, even if the user presses down the ridged ridge as with aluminum containers. Therefore, according to the current state of the art, there is a need for paper-based food containers that can be closed with a flat lid without heat treatment or fixing processes (manual pressing).

[0007] As a result, the aforementioned problems and the inadequacy of current solutions have necessitated further development in this technical field. Purpose of the invention

[0008] The present invention relates to a paper-based container for cardboard lids, which eliminates the aforementioned disadvantages and brings new advantages to the relevant technical field.

[0009] The main purpose of the invention is to develop a paper-based container onto which a flat lid can be placed by means of an inwardly directed, reversed edge bend at the top.

[0010] The purpose of the invention is to use flat lids made of laminated cardboard in paper-based containers without heat treatment and without the necessary equipment, and to attach them to the paper-based container independently by means of a reverse edge bend without any processing.

[0011] Another objective of the invention is to eliminate the need to use laminated cardboard lids in aluminium containers, which are unsuitable for contact with hot food.

[0012] Another objective of the invention is to enable the use of laminated cardboard lids in laminated cardboard containers by eliminating the risk of inadequate sealing in aluminum containers due to the heat required for gluing, so that they can be used in all extruded, coated or pure paper-based containers.

[0013] To fulfill all the purposes mentioned above and those arising from the detailed description, the invention is a paper-based food container in which food is stored in the food industry, and - a paper container filled with food and made from extruded, coated or pure paper, - a flat cover made of laminated cardboard, extending horizontally outwards from the top of the paper container and resting on the paper container, - and around an edge that extends diagonally from the outer edge of the lid's contact surface towards the paper container and is inserted into the lid's contact surface, thereby fixing the lid itself by clamping it onto the paper container.

[0014] The structural and characteristic features, as well as all the advantages of the invention, become clearer with reference to the figures shown below and the detailed explanations relating to these figures. Therefore, the evaluation must be carried out taking these figures and detailed explanations into account. Illustrations that contribute to understanding the invention Fig. : General appearance of the paper-based container that is the subject of the invention. Fig. : Cross-sectional view of the paper-based container that is the subject of the invention. Explanation of the parts references 10 Housing of the paper-based container 11 Lid seat 12 edge bending Detailed description of the invention

[0015] In this detailed description, the preferred alternatives to the paper-based container that is the subject of the invention are explained only for a better understanding of the subject and without any limiting effect.

[0016] Fig. Figure 1 shows a general view of the paper-based container that is the subject of the invention. According to this, the paper-based container in its most basic form consists of an extruded, coated, or pure paper container body (10) into which food products are filled, a laminated cardboard cover arranged on the top of the paper container body (10) that can be placed on the paper container body (10), and a rim fold (12) extending obliquely into the paper container body (10) from the outer edge of the cover's bearing surface (11).

[0017] The paper container body (10), which forms the main structure of the paper-based container of our invention, consists of extruded, coated, or pure paper. The paper container body (10) is used in the food industry for packaging food products such as ready meals, dairy products, salads, and sweets. To prevent spillage during transport, the paper container body (10) is sealed with a flat lid made of laminated cardboard. Our invention relates to a paper-based container that allows the aforementioned flat lid made of laminated cardboard to be attached to the paper container (10) without any heat treatment or additional processing by the user, such as bending.

[0018] As in Fig.As can be seen, a lid support surface (11) extends horizontally outwards on the top of the paper container (10). This lid support surface (11) forms the surface on which the flat lid, made of laminated cardboard, rests on the paper container (10). When the flat lid made of laminated cardboard is placed on the paper container body (10), it sits on the lid support surface (11) and is located on the container body (10).

[0019] To enable the laminated cardboard lid to be automatically attached to the paper container body (10), i.e., locked in place, an edge fold (12) was formed at the outer end of the lid's contact surface (11), extending at an angle towards the paper container body (10). This edge fold (12) ensures that the lid, placed on the contact surface (11), is automatically secured to the paper container body (10) by being clamped in place.

[0020] Thanks to the edge fold (12) of the paper container (10), it can be closed with a flat lid made of laminated cardboard, making it possible to attach the paper container (10) without any heat treatment or additional processing by the user, such as bending.

[0021] The contact surface (11) of the lid on the paper cup body (10) and the rim fold (12) are manufactured in one piece with the paper cup body (10).

[0022] When consuming food from the paper-based container, the user can remove the flat lid by lifting the edge folds (12) by hand.

Claims

[1] A paper-based food container used to store food in the food industry, characterized by , that; - A paper container body (10) made of extruded, coated or plain paper, into which food products are filled. - A support surface (11) located on the top of the paper container (10) and extending horizontally outwards, on which a flat lid made of laminated cardboard can rest on the paper container (10). - An edge bend (12) extending from the outer end of the mounting surface (11) of the lid at an angle to the paper container body (10) and placed on the mounting surface (11) of the lid, whereby the lid is automatically fixed by clamping it onto the paper container body (10).

Images