WO2019216782A1 - Transparent foldable cover for food use - Google Patents
Transparent foldable cover for food use Download PDFInfo
- 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
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- 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
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D43/00—Lids or covers for rigid or semi-rigid containers
- B65D43/02—Removable lids or covers
- B65D43/0202—Removable lids or covers without integral tamper element
- B65D43/0214—Removable lids or covers without integral tamper element secured only by friction or gravity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D43/00—Lids or covers for rigid or semi-rigid containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D51/00—Closures not otherwise provided for
- B65D51/02—Loosely-engaging lids or covers for jars, cans or like containers for liquids without means for effecting sealing of container
- B65D51/12—Flexible non-elastic covers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00018—Overall construction of the lid
- B65D2543/00037—Disc closures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00018—Overall construction of the lid
- B65D2543/00259—Materials used
- B65D2543/00296—Plastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00342—Central part of the lid
- B65D2543/0037—Flexible or deformable
- B65D2543/00379—Flexible or deformable hinged or articulated, i.e. made of two or more parts hinged one to another
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00342—Central part of the lid
- B65D2543/00398—Reinforcing 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
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. 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.
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
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)
| 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 |
-
2018
- 2018-05-11 PT PT110732A patent/PT110732A/en unknown
-
2019
- 2019-05-10 WO PCT/PT2019/050010 patent/WO2019216782A1/en not_active Ceased
Patent Citations (6)
| 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 |
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