[go: up one dir, main page]

WO2019216782A1 - Transparent foldable cover for food use - Google Patents

Transparent foldable cover for food use Download PDF

Info

Publication number
WO2019216782A1
WO2019216782A1 PCT/PT2019/050010 PT2019050010W WO2019216782A1 WO 2019216782 A1 WO2019216782 A1 WO 2019216782A1 PT 2019050010 W PT2019050010 W PT 2019050010W WO 2019216782 A1 WO2019216782 A1 WO 2019216782A1
Authority
WO
WIPO (PCT)
Prior art keywords
lid
cover
folding
folded
pet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/PT2019/050010
Other languages
French (fr)
Portuguese (pt)
Inventor
Marcos DÓRIA NÓBREGA TEOTÓNIO PEREIRA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lusoforma Industria E Comercio De Embalagens SA
Original Assignee
Lusoforma Industria E Comercio De Embalagens SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lusoforma Industria E Comercio De Embalagens SA filed Critical Lusoforma Industria E Comercio De Embalagens SA
Publication of WO2019216782A1 publication Critical patent/WO2019216782A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00Lids or covers for rigid or semi-rigid containers
    • B65D43/02Removable lids or covers
    • B65D43/0202Removable lids or covers without integral tamper element
    • B65D43/0214Removable lids or covers without integral tamper element secured only by friction or gravity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00Lids or covers for rigid or semi-rigid containers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00Closures not otherwise provided for
    • B65D51/02Loosely-engaging lids or covers for jars, cans or like containers for liquids without means for effecting sealing of container
    • B65D51/12Flexible non-elastic covers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00037Disc closures
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00259Materials used
    • B65D2543/00296Plastic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00342Central part of the lid
    • B65D2543/0037Flexible or deformable
    • B65D2543/00379Flexible or deformable hinged or articulated, i.e. made of two or more parts hinged one to another
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00342Central part of the lid
    • B65D2543/00398Reinforcing ribs in the central part of the closure

Definitions

  • This invention is within the technical field of the industry of manufacture of clear plastic folding lids for disposable aluminum food containers,
  • the shape packs (aluminum and disposable) on the shelves are usually arranged to maximize shelf space. They are of two types: with cardboard covers folded inside the package so that all packages fit together, or with plastic or cardboard covers overlapping the shapes making visible the covers (which may or may not be transparent), but where the number of packages that may be visible on the shelf is smaller (by a ratio of 3: 1).
  • US2016101892 (AI) refers to a lid / shape assembly in which the regions of both parts are placed so that they can be tightly closed and the lid easily removed, which is not even mentioned in the present application, while the The present application claims a transparent lid which is folded and placed into a shape where it will be used as a lid as the present patent claims.
  • the present invention implies the use of a container material (aluminum) other than the lid (plastic).
  • the material from which the container is made must be easily foldable but not elastic (does not itself return to its original shape after deformation), while the material from which the lid is made must be able to naturally return after deformation to initial shape without visible damage.
  • This invention relates to a transparent lid that is reversibly folded without visual or functional damage.
  • This lid is thermoformed in PET or PVC at a temperature between 180 ° C and 250 ° C and wherein the deformation is made by vacuum in the area to be folded, and is deformed in other zones as well to maximize the mechanical strength of the lid.
  • the lid is placed over the box in a custom fit (Fig. 1) and fixed in position by deforming the edges of the box
  • This invention relates to a transparent lid that is reversibly folded without visual or functional damage.
  • the deformation of said lid is made by vacuum in the zone to be folded and is deformed also in other zones to maximize the mechanical strength of the lid.
  • Said lid may be composed of various types of thermoformed polymers, including PET or PVC at a temperature between 180 ° C and 250 ° C.
  • the PET is 0.2 mm thick and the piece should not be longer than 20 cm
  • the folds (dl and d2) are in the direction parallel to the smaller side and when the lid is folded consist of semicircles (2) of 2 mm in diameter. For different dimensions these parameters must be adjusted.
  • This lid being reversibly foldable without visual or functional damage, thus minimizes the space occupied by a set of rectangular shapes with lid.
  • Figure 1 illustrates how the transparent lid is placed in top perspective view.
  • Figure 2 illustrates only the lid and how it is folded into the container of Figure 1.
  • Figure 3 illustrates the shape of Figure 1 with the lid arranged at the bottom of the shape and wrapped with a rubber band, in a perspective view from above.
  • Figure 4 illustrates only the lid, representing the folds (dl and d2), the deformations (al, a2, a3 and a4) and the lines (l1 and l2), in a perspective view from above.
  • the present invention solves the technical problem of creating a clear plastic foldable lid for disposable aluminum food containers which is rigid and foldable to minimize the space occupied by a rectangular shaped lid assembly and said The lid should return by itself to its original shape.
  • said lid is reversibly folded without visual or functional damage.
  • the deformation of said lid is made by vacuum in the zone to be folded (dl and d2), and is deformed in other zones as well to maximize the mechanical strength of the lid (A1, a2, a3, a4).
  • the lid may be comprised of various types of thermoformed polymers, including but not limited to PET or PVC at a temperature between 180 ° C and 250 ° C.
  • the lid is composed of PET
  • the PET is 0.2 mm thick and the piece is no more than 20 cm long.
  • the folds are two (dl and d2) and are parallel to the smaller side and form 180 ° (2) semicircles of 2 mm diameter when the lid is closed. For different dimensions these parameters must be adjusted.
  • the lid is reversibly foldable without visual or functional damage, thus allowing to minimize the space occupied by a set of rectangular shapes with lid.
  • the lid is transparent plastic, In a preferred embodiment, this lid is used in disposable aluminum containers for food use.
  • This folding is done in two lines perpendicular to the larger side.
  • the geometry of the lid artifacts was also chosen, as per the Applicant's technical information in the manufacture of the existing non-folding lid.
  • thermoforming temperature and the applied vacuum intensity are parameters to be controlled in order to optimize the resistance of the part.
  • temperatures should be in the range of 180 ° C to 250 ° C if the material is 0.2 mm thick PET and the piece is no more than 20 cm long. However, for different dimensions these parameters must be adjusted.
  • This lid has been reversibly folded without visual or functional damage after being thermoformed in PET and PVC at a temperature between 180 ° C and 250 ° C.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

The present invention relates to a transparent, foldable plastic cover for disposable aluminium containers for food use, which cover is reversibly folded without any visible or functional damage. The cover is placed on a box, in a snap-fitted joint (figure 1), and secured in position by deformation of the box edges. The folds (d1, d2) of the cover are parallel to the shorter side and consist of semicircles (2) of 2 mm diameter when the cover is fitted. The cover is made of PET or PVC thermoformed at a temperature of 180°C to 250°C, and it is vacuum deformed in the folding zone (d1 and d2) and also in other zones (a1, a2, a3, a4) in order to maximise the mechanical strength of the cover.

Description

DESCRIÇÃO  DESCRIPTION

TAMPA DOBRÁVEL EM PLÁSTICO TRANSPARENTE PARA RECIPIENTES DESCARTÁVEIS EM ALUMÍNIO, PARA USO ALIMENTAR FOLDING TRANSPARENT PLASTIC COVER FOR DISPOSABLE ALUMINUM CONTAINERS FOR FOOD

CAMPO TÉCNICO TECHNICAL FIELD

Esta invenção insere-se no campo técnico da indústria do fabrico de tampas dobráveis, em plástico transparente, para recipientes descartáveis em alumínio, para uso alimentar, This invention is within the technical field of the industry of manufacture of clear plastic folding lids for disposable aluminum food containers,

ANTECEDENTES DA INVENÇÃO BACKGROUND OF THE INVENTION

Na indústria das tampas dobráveis em plástico transparente, para uso em recipientes em alumínio descartáveis para uso alimentar, o que existe no mercado são tampas geralmente não dobráveis, com excepção das que são vendidas geralmente no supermercado em pacotes de poucas unidades (3 a 5) . Estas têm dentro da forma um número de folhas dobradas de cartão igual ao número de formas. In the transparent plastic folding lid industry for use in disposable aluminum food containers, what is on the market is generally non-folding lid, except for those usually sold in the supermarket in packs of a few units (3 to 5). . These have within the form a number of folded sheets of cardboard equal to the number of forms.

Os pacotes de formas (alumínio e descartáveis), que existem nas prateleiras, estão geralmente arrumados de modo a maximizar o espaço da prateleira. São de dois tipos: com tampas de cartão dobradas dentro do pacote, de modo que todos os pacotes encaixam uns nos outros, ou com tampas de plástico ou de cartão sobrepostas sobre as formas ficando visível as tampas (que podem ou não ser transparentes), mas em que o número de pacotes que podem estar visíveis na prateleira é mais reduzido (num rácio de 3:1) . 0 Pedido US2016101892 (AI ) reffere-se a um conjunto tampa/forma em que as regiões de ambas as peças estão colocadas de modo a poder fechar bem e poder retirar facilmente a tampa, o que não é sequer mencionado no presente pedido, enquanto o presente pedido reivindica uma tampa transparente, que é dobrada e colocada dentro de uma forma onde será utilizada como tampa, como a presente patente reivindica. The shape packs (aluminum and disposable) on the shelves are usually arranged to maximize shelf space. They are of two types: with cardboard covers folded inside the package so that all packages fit together, or with plastic or cardboard covers overlapping the shapes making visible the covers (which may or may not be transparent), but where the number of packages that may be visible on the shelf is smaller (by a ratio of 3: 1). US2016101892 (AI) refers to a lid / shape assembly in which the regions of both parts are placed so that they can be tightly closed and the lid easily removed, which is not even mentioned in the present application, while the The present application claims a transparent lid which is folded and placed into a shape where it will be used as a lid as the present patent claims.

Ainda a Patente US5507406 A refere-se a tampas em que a sua remoção deixa marcas, permitindo assim aferir da sua inviolabilidade. Assim considera-se que o próprio fim da invenção é distinto do da presente invenção. Still US5507406 A refers to caps in which their removal leaves marks, thus allowing to check their inviolability. Thus the purpose of the invention itself is considered to be distinct from that of the present invention.

Note-se ainda que a presente invenção implica a utilização de um material do recipiente (alumínio) diferente do da tampa (plástico) . 0 material de que o recipiente é feito tem de ser facilmente dobrável, mas não elástico (não volta por si mesmo à forma original após deformação), enquanto o material de que a tampa é feita tem que ter capacidade de, após deformação, voltar naturalmente à forma inicial sem danos visíveis.

Figure imgf000004_0001
It is further noted that the present invention implies the use of a container material (aluminum) other than the lid (plastic). The material from which the container is made must be easily foldable but not elastic (does not itself return to its original shape after deformation), while the material from which the lid is made must be able to naturally return after deformation to initial shape without visible damage.
Figure imgf000004_0001

Esta invenção reiere-se a uma tampa transparente que e dobrada de um modo reversível sem dano visual ou funcional. Esta tampa é termoformada em PET ou PVC a uma temperatura entre 180 °C e 250 °C e em que a deformação é feita por vácuo na zona que vai ser dobrada, sendo deformada também noutras zonas de modo a maximizar a iesistência mecânica da tampa. A tampa é colocada sobre a caixa num encaixe à medida (Fig.l) e fixada na posição por deformação das bordas da caixa Esta invenção refere-se a uma tampa transparente que é dobrada de um modo reversível sem dano visual ou funcional. This invention relates to a transparent lid that is reversibly folded without visual or functional damage. This lid is thermoformed in PET or PVC at a temperature between 180 ° C and 250 ° C and wherein the deformation is made by vacuum in the area to be folded, and is deformed in other zones as well to maximize the mechanical strength of the lid. The lid is placed over the box in a custom fit (Fig. 1) and fixed in position by deforming the edges of the box This invention relates to a transparent lid that is reversibly folded without visual or functional damage.

A deformação da referida tampa é feita por vácuo na zona que vai ser dobrada, sendo deformada também noutras zonas de modo a maximizar a resistência mecânica da tampa. The deformation of said lid is made by vacuum in the zone to be folded and is deformed also in other zones to maximize the mechanical strength of the lid.

A referida tampa pode ser composta por diversos tipos de polímeros termomoldáveis, inclundo PET ou PVC a uma temperatura entre 180 °C e 250 °C . Said lid may be composed of various types of thermoformed polymers, including PET or PVC at a temperature between 180 ° C and 250 ° C.

Na tampa da presente invenção, o PET tem 0,2 mm de espessura e a peça não deve ter mais do que 20 cm de comprimento In the lid of the present invention, the PET is 0.2 mm thick and the piece should not be longer than 20 cm

Na referida tampa as dobras (dl e d2) são na direção paralela ao lado mais pequeno e quando a tampa está dobrada consistem em semicírculos (2) de 2 mm de diâmetro. Para diferentes dimensões deverão ser ajustados estes parâmetros . In said lid the folds (dl and d2) are in the direction parallel to the smaller side and when the lid is folded consist of semicircles (2) of 2 mm in diameter. For different dimensions these parameters must be adjusted.

Esta tampa, sendo dobrável de um modo reversível, sem dano visual ou funcional, permite assim minimizar ao máximo o espaço ocupado por um conjunto de formas rectangulares com tampa . This lid, being reversibly foldable without visual or functional damage, thus minimizes the space occupied by a set of rectangular shapes with lid.

DESCRIÇÃO DAS FIGURAS DESCRIPTION OF THE FIGURES

A Figura 1 ilustra a forma com a tampa transparente é colocada, numa perspectiva de topo. A Figura 2 ilustra apenas a tampa e como é colocada dobrada dentro do recipiente da Figura 1. Figure 1 illustrates how the transparent lid is placed in top perspective view. Figure 2 illustrates only the lid and how it is folded into the container of Figure 1.

A Figura 3 ilustra a forma da Figura 1 com a tampa arrumada no fundo da forma e envolta com um elástico, numa perspectiva vista de cima. Figure 3 illustrates the shape of Figure 1 with the lid arranged at the bottom of the shape and wrapped with a rubber band, in a perspective view from above.

A Figura 4 ilustra apenas a tampa, representando as dobras (dl e d2), as deformações (al, a2, a3 e a4) e as linhas (LI e L2), numa perspectiva vista de cima. Figure 4 illustrates only the lid, representing the folds (dl and d2), the deformations (al, a2, a3 and a4) and the lines (l1 and l2), in a perspective view from above.

DESCRIÇÃO DETALHADA DA INVENÇÃO DETAILED DESCRIPTION OF THE INVENTION

A presente invenção resolve o problema técnico de criar uma tampa dobrável, em plástico transparente, para recipientes descartáveis em alumínio, para uso alimentar, que seja rígida e dobrável de forma a minimizar o espaço ocupado por um conjunto de formas rectangulares com tampa e a referida tampa deve retomar por si mesma à forma original. The present invention solves the technical problem of creating a clear plastic foldable lid for disposable aluminum food containers which is rigid and foldable to minimize the space occupied by a rectangular shaped lid assembly and said The lid should return by itself to its original shape.

A resolução do problema técnico impõe os seguintes requisitos : Troubleshooting the technical issue imposes the following requirements:

- Dobragem da tampa mantendo a estabilidade e a rigidez do material .  - Cover folding maintaining material stability and rigidity.

- Tipos de dobras, suas dimensões e número de dobras a adotar .  - Types of folds, their dimensions and number of folds to adopt.

- Promover a deformação apenas nos pontos desejados, sem afetar a restante estrutura da tampa.  - Promote deformation only at the desired points, without affecting the remaining cover structure.

- Garantia do aplanamento posterior da tampa, sem que se observe dano na zona de dobragem. Numa forma de realizaçao, a referida tampa é dobrada de um modo reversível sem dano visual ou funcional. - Guaranteed subsequent flattening of the lid, without damage to the folding zone. In one embodiment, said lid is reversibly folded without visual or functional damage.

Numa forma de realização, a deformação da referida tampa é feita por vácuo na zona que vai ser dobrada (dl e d2), sendo deformada também noutras zonas de modo a maximizar a resistência mecânica da tampa (al, a2, a3, a4). In one embodiment, the deformation of said lid is made by vacuum in the zone to be folded (dl and d2), and is deformed in other zones as well to maximize the mechanical strength of the lid (A1, a2, a3, a4).

Numa forma de realização, a tampa pode ser composta por diversos tipos de polímeros termomoldáveis, incluindo, mas não estando limitados a PET ou PVC a uma temperatura entre 180 °C e 250 °C. In one embodiment, the lid may be comprised of various types of thermoformed polymers, including but not limited to PET or PVC at a temperature between 180 ° C and 250 ° C.

Numa forma de realizaçao preferencial, a tampa é composta por PET , In a preferred embodiment, the lid is composed of PET,

Numa forma de realização preferencial, o PET tem 0,2 mm de espessura e a peça não tem mais do que 20 cm de comprimento . In a preferred embodiment, the PET is 0.2 mm thick and the piece is no more than 20 cm long.

Numa forma de realização, as dobras são duas (dl e d2) e são na direção paralela ao lado mais pequeno e formam semicírculos de 180° (2) de 2 mm de diâmetro quando a tampa está fechada. Para diferentes dimensões deverão ser ajustados estes parâmetros. In one embodiment, the folds are two (dl and d2) and are parallel to the smaller side and form 180 ° (2) semicircles of 2 mm diameter when the lid is closed. For different dimensions these parameters must be adjusted.

Numa forma de realização, a tampa é dobrável de um modo reversível, sem dano visual ou funcional, permite assim minimizar ao máximo o espaço ocupado por um conjunto de formas rectangulares com tampa. In one embodiment, the lid is reversibly foldable without visual or functional damage, thus allowing to minimize the space occupied by a set of rectangular shapes with lid.

Numa forma de realizaçao, a tampa é em p1ást ico transparente , Numa forma de realização preferencial, esta tampa é utilizada em recipientes descartáveis em alumínio, para uso alimentar . In one embodiment, the lid is transparent plastic, In a preferred embodiment, this lid is used in disposable aluminum containers for food use.

EXEMPLO EXAMPLE

Com o objectivo de dobrar a tampa de modo a minimizar o espaço ocupado por um conjunto de formas rectangulares com tampa, escolheu-se a dobragem em duas linhas paralelas (dl e d2) e equidistantes das extremidades, obtendo 3 partes. In order to fold the lid to minimize the space occupied by a set of rectangular lid shapes, it was chosen to fold in two parallel lines (dl and d2) and equidistant from the ends, obtaining 3 parts.

Esta dobragem é feita em duas linhas perpendiculares ao lado maior. Escolheu-se ainda qual a geometria dos artefactos na tampa, conforme informação técnica da Requerente na manufactura das tampas existentes não dobráveis . This folding is done in two lines perpendicular to the larger side. The geometry of the lid artifacts was also chosen, as per the Applicant's technical information in the manufacture of the existing non-folding lid.

De facto é conhecido que pequenas deformações na superfície das tampas, ou das formas melhoram a rigidez das peças, conseguindo assim optimizar a resistência mecânica a forças ou tensões de direções específicas. Assim, as linhas de deformação (Li e L2) no sentido transversal da peça promovem a resistência da peça a torques perpendiculares a essa direção. In fact it is known that small deformations on the surface of the caps or the shapes improve the rigidity of the parts, thus optimizing the mechanical resistance to specific direction forces or stresses. Thus, the deformation lines (Li and L2) in the transverse direction of the part promote resistance of the part to perpendicular torques in that direction.

Após testar com várias geometrias de deformações, foi concluído que pequenas linhas (Li e L2) na direção paralela ao lado mais pequeno, facilitariam a dobra nesse sentido, ao mesmo tempo que promoviam a resistência a torques nas outras direções. After testing with various deformation geometries, it was concluded that small lines (Li and L2) in the direction parallel to the smaller side would facilitate bending in this direction while promoting resistance to torque in the other directions.

Foi também decidido, após os testes, que as dobras (dl e d2) formariam semicírculos (2) de 2 mm de diâmetro quando a tampa está dobrada, pois assim se poupa material e se diminui a histerese do processo de dobragem. It was also decided after the tests that the folds (dl and d2) would form semicircles (2) of 2 mm in diameter when the The lid is folded, thus saving material and reducing the hysteresis of the folding process.

No processo de termoformagem por vácuo foi escolhido promover a aspiração das deformações ou artefactos (al, a2, a3 e a4) , de modo a que só na zona dos mesmos é que houve lugar a deformação. Deste modo, constatou-se que a histerese provocada pela subsequente dobragem era mínima, permitindo o aplanamento posterior da tampa, sem que se observe dano na zona de dobragem. In the vacuum thermoforming process it was chosen to promote the aspiration of the deformations or artifacts (A1, A2, A3 and A4), so that only in the zone of them was deformation occurred. Thus, it was found that the hysteresis caused by subsequent folding was minimal, allowing for subsequent flattening of the lid without damage to the folding zone.

Foi também constatado que a temperatura de termoformagem e a intensidade do vácuo aplicado, bem como o posicionamento dos pontos de vácuo, são parâmetros a controlar, para optimizar a resistência da peça. It has also been found that the thermoforming temperature and the applied vacuum intensity, as well as the positioning of the vacuum points, are parameters to be controlled in order to optimize the resistance of the part.

Assim as temperaturas devem estar no intervalo entre 180°C e 250°C, no caso do material ser PET de 0,2 mm de espessura e a peça não tiver mais do que 20 cm de comprimento. No entanto, para diferentes dimensões deverão ser ajustados estes parâmetros. Thus temperatures should be in the range of 180 ° C to 250 ° C if the material is 0.2 mm thick PET and the piece is no more than 20 cm long. However, for different dimensions these parameters must be adjusted.

Conseguiu-se uma tampa dobrável em plástico transparente, testada com sucesso nos recipientes descartáveis em alumínio, para uso alimentar existentes no mercado. A clear plastic folding lid was successfully tested on disposable aluminum food containers on the market.

Esta tampa foi dobrada de um modo reversível, sem dano visual ou funcional, após ter sido termoformada em PET e em PVC a uma temperatura entre 180°C e 250°C. This lid has been reversibly folded without visual or functional damage after being thermoformed in PET and PVC at a temperature between 180 ° C and 250 ° C.

A deformação foi feita por vácuo na zona de dobra, sendo deformada também noutras zonas criando padrões de modo a aumentar a rigidez da tampa. BLANK UPON FILING The deformation was made by vacuum in the folding zone and was deformed also in other zones creating patterns in order to increase the stiffness of the lid. BLANK UPON FILING

Claims

REIVINDICAÇÕES 1- Tampa dobrável em plástico transparente para recipientes descartáveis em alumínio, para uso alimentar, caracterizada por ser dobrada de um modo reversível, sem dano visual ou funcional e por retomar por si mesma à forma original, sem dano visível após a dobragem . 1. Transparent plastic folding lid for disposable aluminum containers for food use, characterized in that it is reversibly folded, without visual or functional damage and by itself returns to its original shape, without visible damage after folding. 2- Tampa, de acordo com a Reivindicação N° .1, caracterizada por a deformação da mesma ser feita por vácuo na zona que vai ser dobrada, sendo deformada também noutras zonas de modo a maximizar a resistência mecânica da tampa .  Lid according to Claim 1, characterized in that the deformation thereof is made by vacuum in the area to be folded and is deformed in other zones as well to maximize the mechanical strength of the lid. 3- Tampa, de acordo com a Reivindicação N°.l, caracterizada por a mesma ser termoformada em PET ou PVC a uma temperatura entre 180°C e 250 °C.  Lid according to Claim 1, characterized in that it is thermoformed in PET or PVC at a temperature between 180 ° C and 250 ° C. 4- Tampa, de acordo com as Reivindicação N° .1 e N° .3, caracterizada o PET/PVC ter 0,2 mm de espessura e a peça não ter mais do que 20 cm de comprimento.  Lid according to Claims 1 and 3, characterized in that the PET / PVC is 0.2 mm thick and the piece is no more than 20 cm long. 5- Tampa, de acordo com a Reivindicação N° .1, caracterizada por as dobras (dl e d2) se encontrarem na direção paralela ao lado mais pequeno.  Lid according to Claim 1, characterized in that the folds (dl and d2) are in the direction parallel to the smaller side. 6- Tampa, de acordo com a Reivindicação N°.l e N°5, caracterizada as dobras (dl e d2) formarem semicírculos (2) de 2 mm de diâmetro quando da dobragem da tampa.  Lid according to Claim 1 and 5, characterized in that the folds (dl and d2) form semicircles (2) of 2 mm diameter when folding the lid. Lisboa, 11 de Maio de 2018 Lisbon, May 11, 2018 1 1
PCT/PT2019/050010 2018-05-11 2019-05-10 Transparent foldable cover for food use Ceased WO2019216782A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT110732 2018-05-11
PT110732A PT110732A (en) 2018-05-11 2018-05-11 FOLDING CAP IN TRANSPARENT PLASTIC FOR DISPOSABLE ALUMINUM CONTAINERS, FOR FOOD USE

Publications (1)

Publication Number Publication Date
WO2019216782A1 true WO2019216782A1 (en) 2019-11-14

Family

ID=67145847

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PT2019/050010 Ceased WO2019216782A1 (en) 2018-05-11 2019-05-10 Transparent foldable cover for food use

Country Status (2)

Country Link
PT (1) PT110732A (en)
WO (1) WO2019216782A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3557995A (en) * 1968-11-12 1971-01-26 Phillips Petroleum Co Upwardly expansible plastic vented lid
US5507406A (en) 1994-04-26 1996-04-16 Belford Patrick, Inc. Tamperproof/tamper evident container
US20060254948A1 (en) * 2005-05-05 2006-11-16 Herbert Curtis B Nestable containers with folding coverings
US20070131701A1 (en) * 2005-12-01 2007-06-14 Herbert Curtis B Nestable containers with bending covers for improved storage
US20140054291A1 (en) * 2012-08-20 2014-02-27 Abutech Llc Flexible Cover for Container
US20160101892A1 (en) 2014-10-09 2016-04-14 Waddington North America, Inc. Container or platter assembly having locking and release features

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3557995A (en) * 1968-11-12 1971-01-26 Phillips Petroleum Co Upwardly expansible plastic vented lid
US5507406A (en) 1994-04-26 1996-04-16 Belford Patrick, Inc. Tamperproof/tamper evident container
US20060254948A1 (en) * 2005-05-05 2006-11-16 Herbert Curtis B Nestable containers with folding coverings
US20070131701A1 (en) * 2005-12-01 2007-06-14 Herbert Curtis B Nestable containers with bending covers for improved storage
US20140054291A1 (en) * 2012-08-20 2014-02-27 Abutech Llc Flexible Cover for Container
US20160101892A1 (en) 2014-10-09 2016-04-14 Waddington North America, Inc. Container or platter assembly having locking and release features

Also Published As

Publication number Publication date
PT110732A (en) 2019-11-11

Similar Documents

Publication Publication Date Title
JP6958714B2 (en) Packaging bag
EP3316843B1 (en) Liquid container
ES2816375T3 (en) Hang tab and label assembly for product and method of use
JPWO2020100915A1 (en) Packaging bag
ES2650925T3 (en) Container and piece of container
BR112012027564B1 (en) packaging box and unit blanks of one-piece material
ITPT970001A1 (en) SIMPLIFIED ASSEMBLY DEVICE FOR THE PREPARATION OF RULES AND / OR STRUCTURES THAT CONTAIN THEM MADE OF PAPER, CARDBOARD AND SIMILAR MATERIALS
JP2009149371A (en) Method for packaging rolled paper, and packaging box used for it
WO2019216782A1 (en) Transparent foldable cover for food use
JP3208118U (en) Packaging box
CA3092228C (en) Reagent management apparatus
RU2302985C1 (en) Consumer's container for carrying of large-sized food products
RU71640U1 (en) PACKAGING FOR EGGS
RU51596U1 (en) CONSUMER PACKAGING
CN217075115U (en) Two fashioned eight angle packing boxs
JP4956308B2 (en) Cardboard box
BRMU9102585U2 (en) Improvement introduced in glue applicator machine
ITRM20090297A1 (en) COVER FOR TRAYS AND RELATED CUTTERS.
ES2230947B1 (en) CANTONERA FOR PACKAGING IN GENERAL.
ES2835380T3 (en) Container with window
RU153843U1 (en) PACKING DEPLOYMENT
ES1260769U (en) Prismatic-quadrangular container. (Machine-translation by Google Translate, not legally binding)
ES1060973U (en) Separator sheet trays applicable to foodstuffs. (Machine-translation by Google Translate, not legally binding)
BR8201092U (en) Organizer support for folders, envelopes and similar
ITFO970011U1 (en) CARDBOARD CONTAINER FOR PACKAGING PIZZAS, FRESH PASTA AND PASTRY PRODUCTS.

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19735656

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19735656

Country of ref document: EP

Kind code of ref document: A1