Container with viscoelastic cilia for packaging products

Abstract

The present disclosure relates to a container for packaging products comprising: a main body comprising a bottom comprising an internal surface, four sidewalls surrounding the bottom, each of the sidewall is connected with the sequent sidewall by a lateral edge; a cilia-based structure arranged at the internal surface of the bottom of the main body; and a plurality of viscoelastic cilium-based protrusions extending upwardly from the cilia-based structure.

Description

D E S C R I P T I O NCONTAINER WITH VISCOELASTIC CILIA FOR PACKAGING PRODUCTSTECH NICAL FIELD

[0001] The present disclosure relates to a container suitable to stow, storage and transport products. Particularly relates to a container comprising a plurality of viscoelastic cilia protrusions to stow, storage and transport objects.BACKGROUND

[0002] Various industries resource to packaging solutions to contain and protect objects (i.e., devices, parts, components, products) in a context of storage and transportation (i.e., smaller distances and expedition). A safe storage and transport of objects is always a challenge, especially when the object to stow, storage and transport is sensitive or fragile (e.g., electrostatic discharge sensitive devices, medical devices). Typical packaging for the safe settlement and transportation of objects includes solutions made of various building materials such as, cardboard (RU 2494025 C2, ES 2684058 T3, ES 2661596 T3, RU 2352505 C2) and polymeric and composite materials (WO 2020012228, WO 2022144579, US 20200247571 Al; US 11702241 B2). To accommodate one or several objects, distinct solutions are used, as for example, the resource of additional components such as, dividers (US 4643314, US 11667412 B2) that enable to divide the useful volume of a packaging (e.g., tote box, container) in a fixed or adjustable manner depending of the type of dividers to be used and the object to stow.

[0003] Another solution to accommodate objects includes trays that may present a standard fixed shape in which different objects can fit within but can move around (e.g., squared cavities) or dedicated solutions developed precisely for a particular object and that settle while avoiding unwanted movement of the said object. Trays can be made of various materials including rigid materials such as, cardboard, metal (US 2456481), polymers and composites (US 3843009; US 3409199; US 6186328), shape memory polymers (WO 2020016627) and also soft materials as for example, foams (US 5127526, US 4932532, US 2015000231, WO 2020008239).

[0004] The majority of these solutions' present limitations, for instance a typical packaging will almost always resort to additional components to attempt to lock the object or objects in a specific location in order to avoid premature damage. The resort to dividers is a possibility however the rigidity inherent to this type of accessories may not be delicate enough to be in contact with sensitive and fragile objects (e.g., electrostatic discharge sensitive devices, medical devices). The use of trays that present standard shapes for cavities in which the object has mobility can result in premature damage while dedicated solutions make the use of the tray rather specific for a single or few similar objects which then translates to large quantities of trays for various objects, large storage allocations, longer lead-times to define and produce a dedicated solution and the associated costs with all these logistic aspects. Considering this, the present invention relates to an alternative flexible packaging that integrates a customizable cilia- based structure covered by viscoelastic polymeric cilia, for the safe accommodation, storage and transport of various objects including sensitive and fragile (e.g., electrostatic discharge sensitive devices, medical devices). Cilia consists of solitary hair-like structures that project from the surface of cells (e.g., epithelial cells, ependymal cells). Functioning as sensors, cilia present viscoelastic properties that enable the motility of the cilia when there is a mechanical stimulation, followed by a recovery to an original position.

[0005] Viscoelastic polymers consist of a class of materials that, similar to the cilia, exhibit the ability to change shape once subjected to deformation and recoverability to the original shape based on the inherent elasticity of the material. This reversible deformation is dependent on time, type of material and even the design of the viscoelastic element. The viscoelastic properties of polymers can be tailored for specific applications based on structural requirements. Typical applications for viscoelastic polymers include vibration reduction and ergonomic purposes (e.g., cushioning).

[0006] Examples of solutions that present projections or protrusions from a surface that may be considered as resemblant to cilia-based solutions and, that are employed in applications for the stow and / or transport of objects include the following patents: US 6572819 Bl, US 5098676, US 5211915, US 5407648 and US 6048504.

[0007] In US 6572819 Bl is presented a container for sterilizing, storing, transporting and exporting of instruments, in particular, medical instruments, that consists of a tray,a mat and a lid. The flexible resilient mat is formed of silicone or other elastic material that is resistant to high temperatures and pressures associated with steam sterilization and presents in its configuration a plurality of projections, that may take various forms, extending upward to hold the instrument to be sterilized. US 5098676 discloses a container tray for the sterilization and storage of medical surgical instruments and other similar instruments. The container tray includes a mat of silicon rubber exhibiting a plurality of upwardly vertical projections on the upper surface, described as support fingers, that provide support for instruments and also, downwardly projections over the lower surface, described as projecting feet. The mat fits between an upper tray and lower tray that lock together based on an engaging mechanism. US 5211915 introduces a solution related to a receptacle that is of universally usable, stackable, closable and possible to combine with other receptacles. The receptacle consists of a single container for the purpose of storage, disinfection and / or sterilization and transport of a large number of individual instruments, preferably medical instruments and / or parts thereof which are secured in a specific position by a specific element, defined as mat, that includes projecting spikes, preferably made of silicone. A sterilization tray that includes raised ribs protruding from the bottom to sustain a mat that includes a plurality of raised parallel ribs with rows of projections extending from and between each rib for supporting instruments and that is applicable for the sterilization of surgical instrument is disclosed in US 5407648, US 6048504 relates to a pin mat for use in sterilization trays preferably made of a moulded medical grade, flexible and somewhat resistant material such as, silicone. The pin mat is made of a mesh like backing having opposite faces and composed of intercepting stringers defining relatively large openings in the backing. The mesh-like backing comprises a multiplicity of resilient pins or fingers for supporting and fixating medical instruments.

[0008] Examples of other applications in which features that can be somewhat correlated to cilia include US 9205989B1 that describes a container gripper structure of a moulded elastomeric comprising a rectangular base from which longitudinal rows of flexible but recoverable fingers project upwardly with radiused tops for capturing bottles or cans. US 8235052B2 presents an application related to a mouth guard to protect teeth which tight and proper fitting inside the users' mouth is assured by thecilia present in the cavity that comes in contact with the users' teeth. US 20100260963 Al discloses an anti-skid exercise mat to provide a sensation of softness and comfort to the user during exercise activities. The anti-skid exercise mat is made of a foam member with a fabric layer over at least one side wherein the fabric layer comprises a bottom sub-layer and a ciliary sub-layer located on a surface of the bottom sub-layer. US 20160015920A1 presents a biomimetic artificial secured airway for a medical ventilating system that reduces infection rates by integrating an internal Surface modification that resembles cilia and ciliary movement in the secured airway to clear particles from the airway by ciliary action. US 20130283922 Al discloses an electroactive microelectromechanical device that includes artificial hair cells, similar to cilium structures, made of a piezoelectric material thar are subjected to bending or deformation based on the application of a force and / or voltage.

[0009] None of the documents that disclose packaging solutions that integrate elements that can be slightly resembled to cilia describe or suggest the use of viscoelastic ciliumbased extensions or projections or protrusions that enable the safe settlement and transport of various objects and that is reusable based on the recover ability inherent to this class of material. Materials referred in the above-mentioned patents are flexible however no reference to a viscoelasticity based on deformation and recovery is indicated.

[0010] The documents that specifically use the term cilia or cilium-based to describe particular features of an invention do not resource to viscoelastic materials neither the application relates remotely to what is aimed with the present invention.

[0011] These facts are disclosed in order to illustrate the technical problem addressed by the present disclosure.GENERAL DESCRIPTION

[0012] The present disclosure relates to a container comprising viscoelastic cilia suitable to stow, storage and transport objects for distinct application purposes presenting variable shapes, dimensions, masses and fragilities (e.g., electrostatic discharge sensitive devices, medical devices).

[0013] The container, also known as a packaging solution, comprises a structure, namely a viscoelastic structure, that adapts and conforms to the shape, dimensions, mass and fragility of the enclosed objects, providing enhanced cushioning and protection against external impacts and pressures.

[0014] The present disclosure relates to a packaging for the safe accommodation, storage and transport of various products or objects that include but are not limited to sensitive or fragile products selected from electrostatic discharge sensitive devices or medical devices. More particularly, relates to a polymeric based flexible container or packaging that comprises a main body and a cilia-based structure covered by a plurality of viscoelastic cilium-based extensions or protrusions.

[0015] The plurality of viscoelastic cilium-based protrusions forms a matrix. This matrix was developed in manner to have a geometry adaptive and shock-absorbing properties.

[0016] The present disclosure describes a different approach for the stow of objects in which the cilium-based protrusions present the ability to deform from an initial configuration to best conform to the shape, dimensions and mass of an object that is placed on top of them and that can recover back to their initial configuration once the object is removed. Cilium-based protrusions that are not in contact with the product to be transported or storage, maintain the initial configuration serving as a wall that blocks unintended movement from the object during transportation activities. With this concept, the accommodation of products inside the container becomes simpler, more versatile and safer by assuring a soft cushioning that is generated once the object is placed upon the cilium-based extension or protrusion and without unwanted movements of the said object. In addition, there is a reduction of the risk of premature damage of the product or products to be transported and an improvement of the logistics associated to storage areas and related costs related to the versatility and simplicity of this solution.

[0017] Packaging solutions are employed for various industries with the purpose to contain and protect objects during stow, storage and transportation activities. To accommodate a single object or multiple objects, typical packaging solutions available include the use of tote boxes integrating components (i.e., frames, dividers, trays) that adjust the interior volume to best fit the shape and volume of the object or objects thestow. Common materials employed for the fabrication packaging solutions include cardboard, polymeric and composite materials and lightweight metals. Cardboard solutions are ephemeral while lightweight metals still represent overweight solutions that become less comfortable and more costly to transport while more prone to rust.

[0018] Soft materials such as foams are also commonly used for trays with standard fixed shapes or dedicated shapes or with variable surface shapes (e.g., smooth, convoluted, with smooth protrusions and recessions). These solutions are many times single-use related to material quality deterioration over time, they require large storage areas. Non-dedicated solutions enable unwanted movement of objects to accommodate and transport while dedicated solutions are locked to a particular object, or a small range of objects, becoming unsuitable for other purposes. In addition, when presenting a variable surface shape, the placement of an object will cause a deformation of the entire surface which may not be fully adequate to keep the object in a single position during transportation activities. Considering this, it is evident that there is a need to simplify typical packaging solutions by decreasing the number of components and creating a packaging solution that integrates design and materials solutions that combined become versatile for the safe storage and transport of different types of objects with distinct needs. In addition, single-use packaging results in large amounts of waste which is environmentally problematic, while multiple use packaging solutions present issues related to the need of large storage areas to store packaging and components. Therefore, it becomes crucial to create new packaging solutions that address these matters and that optimize the now-a-days approach to packaging towards an innovative alternative approach. With this disclosure it is possible to ensure that the flexible packaging is designed and manufactured in the most desirable, simple and versatile way since each element that composes the flexible packaging is flexible in terms of design, building materials and manufacturing technology. This adaptability provides a flexible container that becomes suitable for a wide range of objects, which translates in a reduction of the number of components needed to make a packaging suitable for a particular object shape, mass and dimensions, while also, reducing the areas allocated for storage as less packaging will be necessary due to the versatility ofthe present invention. The overcome of the presented challenges lead to improved logistics, simpler processes and tasks and lower associated costs.

[0019] In this disclosure is described a container comprising a main body that functions as a structural element shaping the flexible container while supporting the object or objects to contain and transport. The main body comprises a bottom, sidewalls connected by a lateral edge.

[0020] The present disclosure relates to a container for packaging products comprising: a main body, wherein said main body comprises a bottom comprising an internal surface, four sidewalls surrounding the bottom, each of the sidewall is connected with the sequent sidewall by a lateral edge; a cilia-based structure arranged at the internal surface of the bottom of the main body; and a plurality of viscoelastic cilium-based protrusions extending upwardly from the cilia-based structure.

[0021] Preferably, the bottom comprises an external surface and the internal surface. The external surface is the surface that is in contact with the exterior of the container and the internal surface is the surface that is in contact with the cilia-based structure.

[0022] In an embodiment, the plurality of viscoelastic cilium-based protrusions is distributed over a length of the cilia-based structure.

[0023] In an embodiment, the plurality of viscoelastic cilium-based protrusions is distributed uniformly at the cilia-based structure.

[0024] In an embodiment, the plurality of viscoelastic cilium-based protrusions is distributed in a non-uniformly way at the cilia-based structure.

[0025] In an embodiment, the viscoelastic cilium-based protrusion of the plurality of viscoelastic cilium-based protrusions has a micro-needle shape, hair-like shape, or a pyramidal shape or convoluted shape.

[0026] In an embodiment, each of the viscoelastic cilium-based protrusion has a pyramidal shape having a flat bottom surface and a round tip.

[0027] In an embodiment, the hair-like structure comprises a round tip.

[0028] In an embodiment, each of the viscoelastic cilium-based protrusion further comprises a plurality of protrusions, recesses, holes, lattice structures or combinations thereof.

[0029] In an embodiment, the plurality of viscoelastic cilium-based protrusions is bendable or flexible.

[0030] In an embodiment, the plurality of cilium-based protrusions extends in the opposite direction of the surface cilia-based structure, namely the cilia-based structure is between the internal surface of the bottom of the main body and the plurality of cilium-based protrusions.

[0031] In an embodiment, the plurality of viscoelastic cilium-based protrusions is flexible.

[0032] In an embodiment, the plurality of viscoelastic cilium-based protrusions is made of a shape memory polymer.

[0033] In an embodiment, the plurality of viscoelastic cilium-based protrusions is made of a shape memory polymer selected from thermoplastic or thermoset polymer.

[0034] In an embodiment, the polymer of the plurality of viscoelastic cilium-based protrusions is selected from polyurethane, rubber-like material or mixtures thereof.

[0035] In an embodiment, the polymer further comprises additives, masterbatches or fillers or their mixtures thereof.

[0036] In an embodiment, the cilia-based structure is made of a polymer selected from thermoplastic or thermoset polymer.

[0037] In an embodiment, the cilia-based structure is made of acrylonitrile butadiene styrene, polypropylene, high-density polyethylene, polyurethane, epoxy resin, rubberlike material or mixtures thereof. The polymer may also comprise additives, masterbatches or fillers or their mixtures thereof.

[0038] In an embodiment, the cilia-based structure has a thickness from 0.1 to 100mm, preferably 0.5 to 50 mm, more preferably from 0.7 to 40 mm, more preferably from 1 to 30 mm, more preferably from 2 to 4 mm.

[0039] In an embodiment, the four sidewalls comprise the cilia-based structure and the plurality of viscoelastic cilium-based protrusions extending from the cilia-based structure.

[0040] In an embodiment, the container further comprises a lid.

[0041] In an embodiment, the lid further comprises a plurality of viscoelastic ciliumbased protrusions arranged on an internal surface.

[0042] In an embodiment, the lid comprises a cilia-based structure arranged on a surface and a plurality of viscoelastic cilium-based protrusions protruding from the cilia- based structure. Preferably the surface of the lid is the internal surface. The cilia-based structure and the plurality of the viscoelastic cilium-based protrusions are oriented to the bottom of container. This way, the object that is being transported is more cushioned and protected against external impacts and pressures.

[0043] In an embodiment, the lid is of the same material as the main body.

[0044] In an embodiment, the container further at least one handle.

[0045] In an embodiment, the container is obtainable by injection moulding and its variants, additive manufacturing or combinations thereof.

[0046] In an embodiment, the main body may present variable dimensions and shapes.

[0047] The container can be stackable with other containers.

[0048] In an embodiment, the bottom and sidewalls are solid.

[0049] In an embodiment, the main body presents a bottom and sidewalls comprising a plurality of openings or holes, protrusions or recessions or their combinations. With this plurality of openings or holes, protrusions or recessions or their combinations the weight of the container is reduced and / or allows the circulation of air.

[0050] In one embodiment, the main body is made of polymeric or composite materials (e.g., thermoplastics, resins) resourcing to one polymer-based processing technology (e.g., conventional injection moulding and its variants, additive manufacturing technologies) or the combination of multiple. The main body can be made of a single or multiple polymeric materials (e.g., thermoplastics, resins) that may be rigid of flexible, as intended, and, that can integrate additives, masterbatches and fillers to alter specificproperties such as, colour, mechanical properties, thermal properties and electrical properties, as intended for various application purposes (e.g., protection of electrostatic discharge sensitive devices, protection from electromagnetic interferences, resistance to an extreme temperature range, high endurance for structural efforts).

[0051] In an embodiment, the container is flexible.

[0052] In an embodiment, the container integrates within the main body a cilia-based structure that comprises a plurality of viscoelastic cilium-based protrusions over the surface of the cilia-based structure.

[0053] In an embodiment, the cilia-based structure comprising the cilium-based extensions are made of polymeric materials (e.g., thermoplastics, resins, composites).

[0054] In an embodiment, the cilium-based protrusions protrude with variable inclinations, as intended, from the surface of the cilia-based structure.

[0055] In an embodiment, the cilium-based protrusions vary in shape, dimensions and inter-cilium distance as intended.

[0056] In an embodiment, each of the cilium-based protrusion of the plurality of the cilium-based protrusion has the same shape, dimensions and inter-cilium distance of the sequent cilium-based protrusion of the plurality of the cilium-based protrusion.

[0057] In an embodiment, each of the cilium-based protrusion of the plurality of the cilium-based protrusion vary in shape, dimensions and inter-cilium distance of the sequent cilium-based protrusion of the plurality of the cilium-based protrusion.

[0058] In an embodiment, the cilia-based structure is made of polymeric or composite materials and the cilium-based extensions are made of viscoelastic polymers or composites.

[0059] In an embodiment, the cilia-based structure comprises the cilium-based extensions are made of the same polymeric or composite material.

[0060] In an embodiment, the cilia-based structure comprises the cilium-based protrusions are made of different polymeric or composite materials.

[0061] In an embodiment, the cilium-based protrusions are made of different viscoelastic polymeric or composite materials.

[0062] In an embodiment, the cilia-based structure comprising the cilium-based extensions are manufactured by polymer-based processing technologies, as for example, conventional injection moulding and its variants, additive manufacturing technologies or the combination of multiple polymer-based processing technologies (i.e ., hybridization) and then mounted over the bottom and, if intended, over the lateral sidewalls of the main body.

[0063] In an embodiment, the cilia-based structure comprising the cilium-based extensions are simultaneously manufactured by an individual polymer-based processing technology or the combination of multiple polymer-based processing technologies resulting in a single combined structure.

[0064] In an embodiment, the cilia-based structure is entirely covered by a multiplicity of viscoelastic cilium-based extensions that deform once an object is placed upon conforming to its shape, dimensions and mass and with the ability to recover its initial configuration once the object is removed.

[0065] In an embodiment, the cilia-based structure is entirely covered by a multiplicity of viscoelastic cilium-based extensions in which the cilium-based extensions surrounding the stowed object do not deform which helps to avoid unwanted movements of the objects during carrying and transporting activities.

[0066] In an embodiment, the main body may have a squared shape, a circular shape or a hexagonal shape, among others.

[0067] The main improvements related to the disclosed invention are:The versatility to safely and properly stow, for both storage and transport, objects of variable shapes, masses, dimensions, with different degrees of fragilities and, for various applicational purposes;The use of a cilia-based structure covered by a plurality of viscoelastic cilium-based extensions that can alter the initial configuration by deforming when in contact with an object to best conform to its shape while recovering once the object is removed providing not only versatility for a multitude of objects but also reusability;The use of a cilia-based structure covered by a plurality of viscoelastic cilium-based extensions that enable to reduce the need for additional components and provideenergy absorption from shocks and vibrations resulting in a safe cushioning and protection;The possibility to integrate polymeric materials that can vary composition related to polymer modification based on the integration of other polymers, additives, masterbatches fillers, amongst other possibilities resulting in a flexible packaging suitable for various environments, efforts and for the adequate protection of distinct objects with distinct needs;The resource to a packaging with viscoelastic cilia that is versatile and reusable results in an improved logistics due to a reduction of allocated specific packaging with specific geometric blister.

[0068] The advantages of the viscoelastic protrusions bend according to the contours of the fragile objects, distributing forces and minimizing impact stress; the container have sections designed for accommodating various fragile objects of different shapes and sizes and maintains its shape, providing consistent cushioning and support even during transportation or handling of the container.

[0069] The container of the present disclosure is suitable for various industries dealing with fragile objects, such as electronics, glassware, ceramics, medical equipment, instruments, collectibles and delicate artifacts.

[0070] The incorporation of a viscoelastic structure within the container for packaging represents a significant development in providing tailored support and protection for fragile objects. The present disclosure enhances the packaging's ability to safeguard delicate items during storage, transportation, and handling.BRI EF DESCRI PTION OF THE DRAWI NGSThe following figures provide preferred embodiments for illustrating the disclosure and should not be seen as limiting the scope of invention.

[0071] Figure 1 shows a perspective top view of the container with viscoelastic cilia, wherein the numbers refer to: 1 - container; 2 - main body; 3 - cilia-based structure; 4 - cilium-based protrusions; 5 - bottom; 6 - sidewalls, 7 - lateral edge; 8 - handle.

[0072] Figure 2 depicts a partial cross sectional front view of the flexible packaging with viscoelastic cilia depicted in Figure 1, wherein the numbers refer to: 1 - container; 2 - main body; 3 - cilia-based structure; 4 - cilium-based protrusions / extensions, 5 - bottom; 6 - sidewalls.

[0073] Figure 3 consists of a detail of the cross-sectional front view of the flexible packaging with viscoelastic shown in Figure 2, representing the process of placement and removal of an object on top of the cilium-based extensions 4, wherein the numbers refer to: 1 - container; 2 - main body; 3 - cilia-based structure; 4 - cilium-based protrusions; 9 - object; A - placement of an object; B - removal of an object.DETAILED DESCRI PTION

[0074] The present disclosure relates to a new approach for a flexible packaging with viscoelastic cilia suitable for the safe stow of objects of distinct shapes, dimensions, masses and functions including but not limited to sensitive and fragile objects (e.g., electrostatic discharge sensitive devices, medical devices), with the purpose of storage and / or transportation.

[0075] In an embodiment, the container comprises a main body and a cilia-based structure comprising a plurality of cilium-based protrusions of variable design configurations, dimensions and inter-cilium distances, for the application purpose of safe stow, storage and transport of a multitude of objects that may be sensitive and / or fragile (e.g., electrostatic discharge sensitive devices, medical devices), of variable shapes, masses and dimensions, and suitable for diverse application purposes. Ciliumbased protrusions can be made of a single or a combination of viscoelastic polymers that enable the versatility to alter their initial configuration by deforming to best conform to the shape and mass of the object to be in contact with, while surrounding cilium-based protrusions that are not in direct contact with the product remain unaffected. Recoverability after the object is removed and reusability for a new object are also inherent features of the container related to the viscoelasticity of the building material that composes the cilium-based protrusions which makes the disclosed invention flexible, versatile and reusable.

[0076] Figure 1 represents the container 1, which can be flexible or bendable, that includes a main body 2 and a cilia-based structure 3 covered by a plurality of ciliumbased protrusions 4. To cover and protect its content, the container 1 may include a lid or be stacked with other packaging 1. The container 1 includes a main body 2 that can present variable dimensions and shapes in accordance to the needs related to the objects to transport. Although the main body 2 is represented with a planar solid bottom 5, four solid sidewalls 6 connected by rounded lateral edges 7 and two handles 8 on opposite sidewalls 6, this geometry may be variable, as for example, to include openings or holes in the sidewalls 6 and bottom 5 for air passage, or protrusions or recesses of variable shapes and dimensions to create a pattern for aesthetics and / or other purposes, or even by assuming an entire distinct geometric shape (e.g., squared, circular, hexagonal).

[0077] In an embodiment, the main body 2 may include only two handles 8 on opposite sides of the main body 2 as represented.

[0078] In another embodiment, the main body 2 may not include any handles while in a third embodiment it may include a single handle or more than two handles. The positioning, dimensions and geometry of the handle or handles 8 may also by variable, as intended.

[0079] The main body 2 is made of polymeric materials that can be either thermoplastic- or resin- (e.g., thermoset, photosensitive resin) based. The building material may consist of a single polymeric matrix or be a combination of polymers. For both possibilities, additives, masterbatches and fillers may be included to alter specific properties such as, for example, colour, mechanical properties, thermal properties and electrical properties defining this way, a composite material. This versatility in terms of building material of the main body 2 can result in a flexible packaging 1 that is, for example, resistant to an extreme temperature range, and / or has high endurance for structural efforts, and / or presents electrostatic properties in various ranges (i.e., conductive, dissipative) for particular applications that require the protection of electrostatic discharge sensitive devices, and / or electromagnetic shielding ability to protect the content of the flexible packaging 1 from electromagnetic interferences. In addition, the building material may be rigid or with some flexibility, as intended, depending on the application purpose andneeds. Regarding the manufacturing processes suitable for the production of the main body 2, these include polymer-based manufacturing technologies such as, conventional injection moulding and its variants (e.g. overmoulding, bi-injection moulding) and additive manufacturing (e.g., powder bed fusion, material extrusion, VAT photopolymerization, material jetting), for example. Combination of the referred technologies may be done if intended to define a hybrid product that may be multimaterial and present unique design details achievable by each particular technology.

[0080] The main body 2 presents a useful area, located at the bottom 7, where the cilia- based structure 3 is located. In an embodiment, the cilia-based structure 3 is either merely placed or fixed with fast coupling systems, and / or Velcro, and / or with an adhesive, amongst other joining / assembly possibilities.

[0081] In another embodiment, the cilia-based structure 3 can be manufactured simultaneously with the main body 2 forming this way, part of the main body (2) instead of being an add-on component.

[0082] In an embodiment, the cilia-based structure has a thickness from 0.1 to 100mm, preferably 0.5 to 90 mm, more preferably from 0.7 to 50 mm, more preferably from 1 to 30 mm, more preferably from 1,5 to 20mm, more preferably from 2 to 4 mm.

[0083] Figure 2 depicts a partial sectional front view that shows the cilia-based structure 3, placed over the bottom 7 of the main body 2. The cilia-based structure 3 may be positioned solely at the bottom 7 of the main body 2 or also along the sidewalls 6 of the main body 2, as intended to assure a safe and suitable accommodation for the object to stow, storage and / or transport. The cilia-based structure 3 includes an upper surface on top of which are cilium-based protrusions or extensions 4. The surface of the cilia-based structure 3 can be either planar, as represented in all figures, or present protrusions and / or recesses of variable shapes and dimensions and / or even holes positioned in particular locations, as intended. As previously mentioned, on top of the cilia-based structure 3 emerges a plurality of cilium-based protrusions 4. The cilium-based protrusions 4 may protrude perpendicularly or with other inclinations from the surface of the cilia-based structure 3. The cilium-based protrusions 4 consist in the detail that is mostly responsible for the versatility of the flexible packaging 1. The cilium-based protrusions 4 are variable in shape, dimensions and inter-cilium distance. Thesevariations may be predetermined during the design stage of the flexible packaging 1 development considering the type or types of objects that will be stowed. The typical shape of a cilium is known and referred as a hair-like structure with a rounded top. In one embodiment, the cilium-based protrusions 4 present a hair-like structure with a rounded top. In another embodiment, variations of the cilium-based protrusions' 4 shape include convoluted shapes that slightly disform the original cilium-based protrusions 4 shape. In a third embodiment, a possibility includes the integration of smaller cilium over the external surface of the cilium-based protrusions 4 attached to the cilia-based structure 3. These embodiments are examples and do not limit other possibilities. Dimensions and inter-cilium distance are also variable and controllable as intended. In addition, over the cilia-based structure 3, the cilium-based protrusions 4 may all present the same shape, dimensions and inter-cilium distance or have variations across the entire cilia-based structure 3, to best conform to distinct objects stowed in different locations of the flexible packaging 1 simultaneously. The cilia-based structure 3 and the cilium-based protrusions 4 are also made of polymer and produced by polymer-based manufacturing technologies. Cilia-based structure 3 and cilium-based protrusions 4 may be made of the same polymeric material or different polymeric materials while it may also include additives, masterbatches and fillers, similar to the possibilities described for the main body 2. The cilium-based extensions 4 are always made of a viscoelastic polymeric material that enables both viscous and elastic behaviour and can undergo reversible deformation, meaning that it is able to return to its original shape after deformation. The cilium-based protrusions 4 and the cilia-based structure 3 may be made of the same polymeric material or distinct materials.

[0084] The cilia-based structure 3 and the cilium-based protrusions 4 can be manufactured by polymer-based processing technologies such as, conventional injection moulding and its variants and also additive manufacturing technologies. In one embodiment the production of the cilium-based protrusions 4 and the cilia-based structure 3 is based on a sole processing technique while in another embodiment, technological combination between conventional injection moulding and its variants with additive manufacturing technologies is a possibility. This last approach will enable to manufacture a single part by combining specific materials that each technologyresources to and to define a multi-material hybrid part that combines the versatilities regarding design possibilities of each technology.

[0085] When the cilium-based protrusions 4 and the cilia-based structure 3 are made of different polymeric materials, in one embodiment, a single manufacturing process is used based on subsequential steps. For example, Material Jetting, an additive manufacturing technology, enables to, during a single building process, produce a part that has distinct material combinations which result in properties variation along the part structure that are defined while being built. As another example, bi-injection moulding enables to create multi-material parts by injecting a polymer on top of another polymer that was injected previously and cooled. Based on this last production possibility, one can inject a rigid material to define the surface of the cilia-based structure 3 and after inject on top a viscoelastic material to define the cilium-based protrusions 4. In another embodiment, the production of cilium-based extensions 4 and the cilia-based structure 3 with different polymeric materials can be achieved by combining technologies to define a multi-material hybrid product, as previously described.

[0086] Figure 3 depicts the functioning mechanism of the cilium-based protrusions 4 during operation by showing several stages represented based on a detail of a cross- sectional front view of the flexible packaging 1. Before the stow of an object, the ciliumbased protrusions 4 present their initial configuration which consists of unaffected hairlike extensions that protrude from the surface of the cilia-based structure 3. The placement of an object A during the stow will interfere with the initial configuration of the cilium-based protrusions 4. This interference is visible by the deformation of the cilium-based protrusions 4 in direct contact with the object. The mode in which the cilium-based protrusions 4 deform to conform to the object is dependent on the ciliumbased protrusions 4 design configuration, inter-cilium distance, building material and also of the object's mass and shape. Cilium-based protrusions 4 that are not in direct contact with the object will not suffer alteration of the initial configuration. This independence of movement between cilium-based protrusions 4 enables to assure that the object remains in the exact place that it was first placed on as the unaffected ciliumbased protrusions 4 will function as a wall blocking unwanted movement from theobject. In addition, the cilium-based protrusions 4 are delicate to the object which is rather advantageous when it is necessary to stow delicate and fragile objects. Once the object is removed, represented as step B in Figure 3, the cilium-based protrusions 4 will slowly recover the original configuration. The ability to deform and the recoverably are inherent features that result from the use of viscoelastic polymeric materials for the cilium-based protrusions 4. These features enable the reusability of the flexible packaging 1 for a new object that can be of the same shape and mass or for objects that vary the shape and mass in a non-exaggerated manner. Objects that present rather different shapes, dimensions and masses will require the development of flexible packaging 1 that is adjusted to the requirements.

[0087] In an embodiment, the main body is made by resourcing to a single polymer- based processing technology (e.g., conventional injection moulding and its variants, additive manufacturing technologies) or the combination of multiple polymer-based processing technologies resulting in a hybrid product that may be multi-material.

[0088] In an embodiment, the cilia-based structure is covered by the plurality of ciliumbased protrusions across at least one interior surface (i.e., bottom, sidewalls).

[0089] In an embodiment, the top surface of the cilia-based structure can be either planar or present protrusions and / or recesses of variable shapes and dimensions and / or even holes positioned in particular locations, as intended (e.g., structure with convoluted shape, structure with holes).

[0090] In an embodiment, the cilium-based protrusions protrude from the top surface of the cilia-based structure 3, with variable inclination angles.

[0091] In an embodiment the cilium-based protrusions 4 may all present the same shape, dimensions and inter-cilium distance or have variations across the entire cilia- based structure 3.

[0092] In an embodiment, the cilium-based protrusions 4 present a hair-like structure with a rounded top.

[0093] In an embodiment, the shape of the cilium-based protrusions may include protrusions and recesses, holes, lattice structures, amongst other possibilities.

[0094] In an embodiment, the cilia-based structure and a plurality of cilium-based protrusions 4, that are made of polymeric or composite materials (e.g., thermoplastics, resins, composites) and viscoelastic polymers or composites, respectively, wherein: the cilia-based structure 3 and cilium-based protrusions 4 are made of the same polymeric or composite material.

[0095] In an embodiment, the cilia-based structure 3 and cilium-based protrusions 4 are made of different polymeric or composite materials.

[0096] In an embodiment, all cilium-based protrusions 4 are all made of the same viscoelastic polymeric or composite materials.

[0097] In an embodiment, the cilium-based protrusions 4 comprise at least one viscoelastic polymeric or composite materials (multi-material).

[0098] In an embodiment, the material properties of the cilium-based protrusions 4 may be tailored as intended during the manufacturing process resulting either in a gradient of properties.

[0099] In an embodiment, the cilia-based structure 3 and a plurality of cilium-based protrusions 4 are manufactured by polymer-based processing technologies, wherein: the polymer-based processing technologies include conventional injection moulding and its variants and additive manufacturing technologies; or the cilia-based structure 3 and cilium-based protrusions 4 are manufactured with a single polymer-based processing technology; or the cilia-based structure 3 and cilium-based protrusions 4 are manufactured with a combination of two of more polymer-based processing technologies.

[0100] In an embodiment, when manufactured with the approaches described previously, the structure and the protrusions are then merely placed or fixed with fast coupling systems, and / or Velcro, and / or with an adhesive, amongst other joining / assembly possibilities over the bottom of the main body 2 and, if intended, over the lateral sidewalls 6 of the main body.

[0101] In an embodiment, the cilia-based structure 3 and cilium-based protrusions 4 are simultaneously manufactured with the main body 2 resulting in a single combined structure by either an individual polymer-based processing technology or thecombination of multiple polymer-based processing technologies instead of being an add-on component.

[0102] In an embodiment, the cilium-based protrusions 4 are: the size and shape of each cilium-based protrusions may be identical or variable, as intended; the inter-cilium distance may be identical or variable, as intended; the shape memory ability related to the viscoelastic polymer or composite enables to change shape once a load is applied and shape recovery after load removal.

[0103] In an embodiment, the load and shape of the object to stow causes deformation from an initial configuration of the cilium-based protrusions, by motion of the cilium-based protrusions 4, that directly interact with it leading to a rearrangement of the cilium-based protrusions 4.

[0104] The cilium-based protrusions 4 surrounding the product that do not directly interact maintain the initial configuration serving as a wall that blocks unwanted movement from the product during transportation activities.

[0105] When the load of the product is removed from the cilium-based protrusions 4 there is recoverability of the initial configuration of the cilium-based protrusions 4 due to the viscoelastic material which enables reusability.

[0106] The motion of the cilium-based protrusions 4 is independent between the cilia.

[0107] The motion, during a deformation stage of the cilium-based protrusions 4 can be, downward, aligning, translational, or horizontal.

[0108] The motion, during a recovery stage of the cilium-based protrusions 4 can be upward, aligning, translational, or horizontal.

[0109] This disclosed solution and functioning mechanism enable a versatile design for a container 1 suitable for a wide range of objects. This versatility, in comparison with other packaging solutions that typically resource to fixed geometric solutions suitable for a single type of product, provide an improvement of logistic, lead times, space allocated to store different types of packaging solutions and suitability for a multiplicityof objects. Packaging solutions that resource to viscoelastic materials present the deformation and recover ability, however lack the security of fixating an object in a singular position as in these solutions, when an object is placed, the entire surface of the viscoelastic material accompanies the lowering by deformation that occurs where the object is placed while in the disclosed invention, the inter-cilium independence provides an increased control of the object's position.

[0110] The term "comprising" whenever used in this document is intended to indicate the presence of stated features, integers, steps, components, but not to preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.

[0111] The disclosure should not be seen in any way restricted to the embodiments described and a person with ordinary skill in the art will foresee many possibilities to modifications thereof. The above-described embodiments are combinable.

[0112] The following claims further set out particular embodiments of the disclosure.

Claims

C L A I M S1. Container for packaging products comprising: a main body, wherein the main body comprises a bottom comprising an internal surface, four sidewalls surrounding the bottom, each of the sidewall is connected with the sequent sidewall by a lateral edge; a cilia-based structure arranged at the internal surface of the bottom of the main body; and a plurality of viscoelastic cilium-based protrusions extending upwardly from the cilia-based structure.

2. Container according to the previous claim wherein the plurality of viscoelastic cilium-based protrusions is distributed over a length of the cilia-based structure.

3. Container according to any of the previous claims wherein the plurality of viscoelastic cilium-based protrusions is distributed uniformly at the cilia-based structure.

4. Container according to any of the previous claims wherein each of the viscoelastic cilium-based protrusion of the plurality of viscoelastic cilium-based protrusions has a micro-needle shape or hair-like structure or a pyramidal shape or a convoluted shape.

5. Container according to the previous claim wherein the hair-like structure comprises a round tip.

6. Container according to claim 4 wherein the pyramidal shape has a flat bottom and a round tip.

7. Container according to any of the previous claims wherein each of the viscoelastic cilium-based protrusion further comprises a plurality of protrusions, recesses, holes, lattice structures or combinations thereof.

8. Container according to any of the previous claims wherein the plurality of viscoelastic cilium-based protrusions is flexible.

9. Container according to any of the previous claims wherein the plurality of viscoelastic cilium-based protrusions is made of a shape memory polymer.

10. Container according to any of the previous claims wherein the plurality of viscoelastic cilium-based protrusions is made of a shape memory polymer selected from thermoplastic or thermoset polymer.

11. Container according to the previous claim wherein the polymer of the plurality of viscoelastic cilium-based protrusions is selected from polyurethane, rubber-like material or mixtures thereof.

12. Container according to any of the previous claims 9 to 11 wherein the polymer further comprises additives, masterbatches or fillers or their mixtures thereof.

13. Container according to any of the previous claims wherein the cilia-based structure is made of a polymer selected from thermoplastic or thermoset polymer.

14. Container according to any of the previous claims wherein the cilia-based structure is made of acrylonitrile butadiene styrene, polypropylene, high-density polyethylene, polyurethane, epoxy resin, rubber-like material or mixtures thereof.

15. Container according to any of the previous claims 13 to 14 wherein the polymer comprises additives, masterbatches or fillers or their mixtures thereof.

16. Container according to any of the previous claims wherein the cilia-based structure has a thickness from 0.1 to 100mm, preferably from 0.5 to 50 mm, more preferablyfrom 0.7 to 40 mm, more preferably from 1 to 30 mm, more preferably from 2 to 4 mm.

17. Container according to any of the previous claims wherein the four sidewalls comprise the cilia-based structure and the plurality of viscoelastic cilium-based protrusions extending from the cilia-based structure.

18. Container according to any of the previous claims wherein the main body is made of a polymer selected from thermoplastic or thermoset polymer.

19. Container according to the previous claim wherein the polymer of the main body is selected from: acrylonitrile butadiene styrene, polypropylene, high-density polyethylene or mixtures thereof.

20. Container according to any of the previous claims further comprising a lid.

21. Container according to the previous claims wherein the lid comprises the cilia-based structure arranged on a surface and the plurality of viscoelastic cilium-based protrusions protruding from the cilia-based structure.

22. Container according to any of the previous claims 20 to 21 wherein the lid is of the same material as the main body.

23. Container according to any of the previous claims further comprising at least one handle.

24. Container according to any of the previous claims obtainable by injection moulding, additive manufacturing or combinations thereof.

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