EP4522553A1 - Method and apparatus for producing a cushion - Google Patents
Method and apparatus for producing a cushionInfo
- Publication number
- EP4522553A1 EP4522553A1 EP23804257.6A EP23804257A EP4522553A1 EP 4522553 A1 EP4522553 A1 EP 4522553A1 EP 23804257 A EP23804257 A EP 23804257A EP 4522553 A1 EP4522553 A1 EP 4522553A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cushion
- molten
- polymeric
- die
- filaments
- 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.)
- Pending
Links
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
- D04H3/03—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random
- D04H3/037—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random reorientation by liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0092—Producing upholstery articles, e.g. cushions, seats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
- B60N2/0021—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement
- B60N2/003—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement characterised by the sensor mounting location in or on the seat
- B60N2/0033—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement characterised by the sensor mounting location in or on the seat mounted on or in the foam cushion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/70—Upholstery springs ; Upholstery
- B60N2/7017—Upholstery springs ; Upholstery characterised by the manufacturing process; manufacturing upholstery or upholstery springs not otherwise provided for
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/02—Cotton wool; Wadding
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
- D04H3/07—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments otherwise than in a plane, e.g. in a tubular way
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
- D04H3/153—Mixed yarns or filaments
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
- B29C2043/3433—Feeding the material to the mould or the compression means using dispensing heads, e.g. extruders, placed over or apart from the moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/006—Pressing and sintering powders, granules or fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/345—Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
- B29K2023/0608—PE, i.e. polyethylene characterised by its density
- B29K2023/0625—LLDPE, i.e. linear low density polyethylene
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/08—Upholstery, mattresses
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/12—Vehicles
Definitions
- the present disclosure relates to methods and apparatuses for producing interior components such as foamless cushions for seat assemblies that may be used in vehicles.
- FIG. 1 shows a schematic illustration of a system and method in accordance with embodiments described herein.
- FIG. 2 shows a die plate usable as part of the process shown in FIG. 1.
- FIG. 3 shows a die-plate arrangement in accordance with embodiments described herein.
- FIG. 4 shows another die-plate arrangement in accordance with embodiments described herein.
- FIG. 5 shows a cushion blank forming a part of a vehicle interior component in accordance with embodiments described herein.
- FIG. 6 shows a die-plate arrangement and funnel usable as part of the method in accordance with embodiments described herein.
- FIG. 7 is a front perspective view of a vehicle seat assembly according to an embodiment.
- FIG. 8 is a front elevation schematic view of a system to manufacture a seat cushion of the seat assembly of FIG 7.
- FIG. 9 is a top perspective view of a tool plate of the system of FIG. 8 according to an embodiment.
- FIG. 10 is a partial top perspective view of the system of FIG. 8.
- FIG. 11 is a top perspective view of a tool mold of the system of FIG. 8 according to an embodiment.
- FIG. 12 is a front partial perspective view of a cushion of the seat assembly of FIG. 7, according to an embodiment.
- FIG. 13 is a top plan view of tooling plate of the system of FIG. 13.
- FIG. 14 is a side elevation view of a plurality of strands and a plurality of films of the system of FIG. 13.
- FIG. 15 is an enlarged front perspective view of the system of FIG. 13.
- FIG. 16 shows a portion of the system including a heating arrangement in accordance with embodiments described herein.
- FIG. 17 shows the application of a heating arrangement to a polymeric filament in accordance with embodiments described herein.
- FIG. 18 shows a cross-section of a vehicle interior component manufactured in accordance with embodiments described herein.
- FIG. 19 schematically illustrates a perspective view of a seat cushion or a seat back according to an embodiment.
- FIG. 20 schematically illustrates a cross-sectional front view of the seat assembly of FIG. 19.
- FIG. 21 schematically illustrates components used in the method of FIG. 1 according to another embodiment.
- FIG. 22 is a perspective view of an embodiment of a seat assembly with a portion of the trim cover and cushion removed.
- FIG. 23 is perspective view of an embodiment of a non-foam/foamless cushion.
- FIG. 24 is a schematic of an embodiment of a non-foam/foamless cushion having a variable hardness/bulk density/strand size.
- FIG. 25 is a schematic of another embodiment of a non-foam/foamless cushion having a hardness/bulk density /average strand size gradient.
- FIG. 26 is a perspective view of an embodiment of a breaker plate for dispensing resin used to manufacture non-foam/foamless cushions.
- FIG. 27 is a cross-sectional side view of an embodiment of a manufacturing system.
- FIG. 28 is a flow chart illustrating an embodiment of a method of using the breaker plate to produce the variable non-foam cushion.
- FIG. 29 is a top view another embodiment of a breaker plate for dispensing resin used to manufacture non-foam/foamless cushions.
- FIG. 30 is a cross-sectional view of a portion of the breaker plate of FIG. 29.
- FIG. 31 is a zoomed in view of a single orifice from the breaker plate of FIG. 30.
- FIG. 32 is a flow chart of a method of producing a vehicle interior component.
- FIG. 33 is a flow chart of a method of manufacturing a product.
- FIG. 34 is a flow chart of a method of manufacturing a product.
- FIG. 35 is a flow chart of a method of assembling a seat.
- FIG. 36 is a flow chart of a method forming a product.
- FIG. 37 is a flow chart of a method of producing a vehicle interior component.
- FIG. 38 is a flow chart of a method of producing a vehicle interior component.
- FIG. 39 is a flow chart of a method of producing a vehicle interior component.
- FIG. 40 is a flow chart of a method of producing a product such as a seat cushion.
- FIG. 41 is a flow chart of a method of making a seat pad.
- first, second, etc. are, in some instances, used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.
- a first contact could be termed a second contact, and, similarly, a second contact could be termed a first contact, without departing from the scope of the various described embodiments.
- the first contact and the second contact are both contacts, but they are not the same contact.
- the term “if’ is, optionally, construed to mean “when” or “upon” or “in response to determining” or “in response to detecting,” depending on the context.
- the phrase “if it is determined” or “if [a stated condition or event] is detected” is, optionally, constmed to mean “upon determining” or “in response to determining” or “upon detecting [the stated condition or event]” or “in response to detecting [the stated condition or event],” depending on the context.
- the term “and/or” means that either all or only one of the elements of said group may be present.
- a and/or B shall mean “only A, or only B, or both A and B”.
- only A the term also covers the possibility that B is absent, i.e., “only A, but not B”.
- the term “substantially,” “generally,” or “about” may be used herein to describe disclosed or claimed embodiments.
- the term “substantially” may modify a value or relative characteristic disclosed or claimed in the present disclosure. In such instances, “substantially” may signify that the value or relative characteristic it modifies is within ⁇ 0%, 0.1%, 0.5%, 1%, 2%, 3%, 4%, 5% or 10% of the value or relative characteristic.
- integer ranges explicitly include all intervening integers.
- the integer range 1-10 explicitly includes 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10.
- the range 1 to 100 includes 1, 2, 3, 4 . . . 97, 98, 99, 100.
- intervening numbers that are increments of the difference between the upper limit and the lower limit divided by 10 can be taken as alternative upper or lower limits. For example, if the range is 1.1. to 2.1 the following numbers 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, and 2.0 can be selected as lower or upper limits.
- Filaments or strands may be used herein to refer to the generally linear polymeric units (although they may be fused together to form a mesh-like structure) after being dispensed through one or more orifices of the die, plate, die plate, tool, tooling plate, extrusion die, or breaker plate, or other variations thereof, which are likewise used to refer equivalent components.
- the terms: consolidated filament structure, filament structure, yield strands, body, mesh, final member, nonfoam component, non-woven mesh, or cushion may refer to the same or similar components.
- the term funnel and cover may be used to refer to the same or similar components as well.
- tank, water tank, cooling chamber, liquid tank, and bath may refer to the same or similar components.
- the use of different terms to refer to the same or similar components may be used to avoid confusion when describing different preferred embodiments.
- the terms may be interchangeable as various components of features from various embodiments may be combined in manners not expressly described herein.
- water tank and liquid tank refer to similar interchangeable components although in at least one preferred embodiment, the tank is fdled with water or arranged to be filled with water as opposed to any liquid when water tank is used.
- interconnected refers to separate polymeric filaments that are entangled, intertwined, bonded, or otherwise bound to form a mesh body.
- interconnected does not refer to polymeric filaments that are manufactured separately and then fixed together by fasteners or thread.
- a hopper 12 holds solid granules of a polymeric material 14 that is to be extruded.
- the material 14 is linear low- density polyethylene (LLDPE), although methods described herein may use different types of polymers as desirable and effective to produce the finished product.
- LLDPE linear low- density polyethylene
- the material 14 is fed from the hopper 12 to an extruder 16.
- the extruder 16 melts and transports the material 14 to a die-plate arrangement 18, which includes a die plate 20.
- the extruder 16 may be, for example, a conventional extruder that includes a barrel that receives a rotatable screw. Rotation of the screw forces the material 14 to move through the barrel and helps heat the material because of the friction generated as the screw rotates. Heating elements may be disposed on the barrel and heat the polymeric material 14 inside the barrel.
- the material 14 exits the extruder 16 at location 22 under pressure and in a molten state.
- molten as used herein means that the material is at least partially melted. It does not mean that the material is necessarily in a fully liquid state; rather, it means that the material is not completely solid and is still able to flow through elements of the system 10. For example, the molten material is still able to flow through the die plate 20, but it may be very viscous and starting to solidify.
- the material will begin to cool as it ceases to be agitated by the extruder screw and gets farther from any heaters. At different points in the process 11, the material may have a higher or lower viscosity, but if it is still partially melted and able to flow — even slowly — the term “molten” is applied herein.
- the die plate 20 extrudes the material 14 into filaments 24. More specifically, the die plate 20 has multiple holes 21 disposed therethrough — see, e.g., FIG. 2 — through which the molten material 14 passes. A single filament 24 is extruded from each die-plate hole. The filaments 24 fall downward from the die plate 20 under system pressure and the force of gravity to a funnel 26.
- the funnel 26 helps consolidate or group the filaments 24 into a more compact arrangement in which the filaments 24 bend or loop, and each filament 24 contacts and bonds to at least one other filament 24.
- the funnel 26 has a funnel inlet 28 and a funnel outlet 30 that is smaller than the funnel inlet 28.
- the funnel 26 is narrower at the funnel outlet 30 than at the funnel inlet 28.
- Individual separated filaments 24 enter the funnel inlet 28, the filaments 24 then bend or loop and move into contact with each other as they accumulate and slide down the funnel 26 toward the funnel outlet 30, and the consolidated filament structure 32 exits the funnel outlet 30 and enters a water tank 34.
- the water tank 34 holds water 36 and receives the consolidated filament structure 32 from the funnel 26.
- the water 36 performs at least two functions. First, it helps to temporarily support the consolidated filament structure 32 to prevent it from collapsing or condensing into a less open or less porous arrangement. As such, the water 36 provides some resistance that causes the additional bending and looping of the filaments 24 to further build the consolidated filament structure 32. Second, the water 36 cools the polymeric filaments 24 from the outside to solidify them. The temperature of the water 36 may be much less than the temperature of the filaments 24 as they leave the die plate 20, for example, it may be at the temperature of the ambient environment surrounding the tank 34. Although the fluid used in this embodiment is liquid water 36, in other embodiments, other types of fluids may be used.
- the water tank 34 includes various rollers and conveyors that help move the consolidated filament structure 32 through and out of the water 36.
- a tractor conveyor 38 is submerged in the water 36 and engages opposing lateral sides of the consolidated filament structure 32 to move it away from the funnel 26 at approximately the same speed as the consolidated filament structure 32 exits the funnel 26.
- the gap between the opposing portions of the tractor conveyor 38 is slightly narrower than the width of the consolidated filament structure 32 to allow the tractor conveyor 38 to better grip the consolidated filament structure 32.
- FIG. 1 is a schematic representation and has been simplified for illustration purposes.
- a conveyor such as the tractor conveyor 38, may be located toward the front and back of the system 10 as it is oriented in FIG. 1, rather on the left and right sides as shown.
- Another roller 40 helps keep the consolidated filament structure 32 submerged and helps guide it through the water 36 toward a conveyor belt 42 and a shaker table 44 that are positioned outside of the water tank 34.
- the shaker table 44 shakes the consolidated filament structure 32 while it is on the conveyor belt 42 to remove at least some of the water 36. Pressurized air may also be blown toward the consolidated filament structure 32, which may also be squeezed to remove more of the water 36.
- the consolidated fdament structure 32 may be cut to a desired size and shape.
- the filament structure 32 forms a stranded-mesh material that may be used, for example, as a cushion blank for part of a vehicle interior component.
- the filament structure 32 may have a rectangular cross section that is later cut or shaped to a desired contour for its intended use.
- a die plate such as the die plate 20
- the “hole density” is the number of holes per unit area in the die plate 20.
- FIG. 3 shows a die-plate arrangement 46 that may be used, for example, in the method described in association with FIG. 1.
- the die-plate arrangement 46 includes a die plate 48 and a template 50.
- the die plate 48 is rectangular; however, the template 50 has a predefined outline portion 51, which in this embodiment is the inside perimeter of the template 50.
- the template 50 is used to mask a portion of the die plate 48 to provide a filament structure — for example, a cushion blank for a vehicle seat — that has a cross section that is defined by the predefined outline portion 51.
- the die-plate arrangement 46 also provides a filament structure having a plurality of different densities.
- the “density” of the filament structure refers to the amount of material per volume.
- the seat bottom may include bolsters on the inboard and outboard sides of the seat. It may be desirable to have the bolsters be somewhat stiffer than the middle portion of the seat bottom where the occupant sits. One way to achieve this is to have a higher density of the filament material in the bolster areas as compared to the density of the filament material in the middle of the cushion.
- the die plate 20 shown in FIG. 1 includes holes of a uniform diameter and hole density.
- the hole density in the die plate 48 shown in FIG. 2 is not uniform. Rather, the die plate 48 includes a first area 54 indicated by the curved dashed line toward the left side of the drawing as shown in FIG. 3.
- the die plate 48 includes another of the first areas 54, which is indicated by the curved dashed line toward the right side of the drawing as shown in FIG. 3.
- the two first areas 54 are located in positions that correspond to the left and right bolster areas of a seat cushion.
- the die plate 48 also includes a second area 56, which is indicated by a rectangular dashed line shown in FIG. 3.
- each of the first areas 54 includes a plurality of first holes 58
- the second area 56 includes a plurality of second holes 60.
- only a few of the holes 58, 60 are labeled in FIG. 3 for clarity.
- each of the first and second areas 54, 56 may include dozens, hundreds, or more, of the first and second holes 58, 60.
- the first holes 58 together define an open space in the first areas 54. This open space may be compared to the entire area of the first areas 54, which defines an open space per unit area in the first areas 54.
- the first areas 54 have a closed portion defined by the die-plate material and an open portion defined by all the first holes 58.
- the total open area as defined by the first holes 58 makes up a certain portion of the first areas 54, and when this total open area is divided by the total area occupied by the first areas 54, it yields a number that may be considered an “open space per unit area”. And because this open space per unit area is in the first areas 54, it may be referred to as a “first open space per unit area”.
- the total open area as defined by the second holes 60 in the second area 56 defines a second open space per unit area. In the embodiment shown in FIG. 3, the first open space per unit area is greater than the second open space per unit area, which results in a higher density of filament material in the first areas 54 as compared to the second areas 56.
- a ratio specifically, a ratio of the open portion to the total portion in each of the first and second areas 54, 56.
- a ratio of the open portion of the first area i.c., the total open area defined by the first holes 58 — to the first areas 54 (in total) is greater than a ratio of the open portion of the second area to the second area 56 (in total).
- several different methods may be used.
- the diameters of the holes 58, 60 may be the same, but the number of first holes 58 per unit area in the first areas 54 may be different from the number of second holes 60 per unit area in the second area 56. More specifically, there may be more of the first holes 58 per unit area in the first area 54 then there are second holes 60 per unit area in the second area 56. Alternatively, the number of first holes 58 per unit area may be the same as the number of second holes 60 per unit area, but the first holes 58 may have a larger diameter than the diameter of the second holes 60. In either case, the total amount of polymeric material per unit area flowing through the first areas 54 will be greater than the total amount of material per unit area flowing through the second area 56. The greater amount of material will result in a filament structure having a higher density in the first areas 54 than in the second area 56.
- FIG. 4 shows a die-plate arrangement 62 in accordance with embodiments described herein. Similar to the die-plate arrangement 46 shown in FIG. 3, the die-plate arrangement 62 includes a die plate 64 and a template 66 that is configured to cover or mask a portion of the holes in the die plate 64.
- the template 66 has a predefined outline portion 67 that defines a cross section of the finished product — for example, a cushion for a vehicle seat.
- the die plate 64 includes a first area 70 and a second area 71 similar to those shown in the die plate 48 in FIG. 3. Also similar to the die plate 48, first and second areas of 70, 72 of the die plate 64 respectively include first holes 74 and second holes 76.
- One difference with the die plate 64 is that it includes a third area 78, which is indicated by the dashed line defining the small rectangle in FIG. 4.
- the third portion 78 includes a plurality of third holes 81 disposed therethrough — again, only some of which are labeled for clarity.
- the third holes 81 together define a third open space per unit area in the third area 78.
- the third open space per unit area is less than the second open space per unit area — in other words, a filament structure created using the dieplate arrangement 62 will have a lower density in the third area 78 than in the second area 71. This may be a convenient location to place an occupant sensor, such as a seat-belt reminder (SBR).
- SBR seat-belt reminder
- the density of the third holes 81 in the third area 78 may also be defined as described above.
- a ratio of the open area to the total third area 78 will be less than the ratio of the open area in the second area 71 to the total second area 71.
- the die-plate arrangement 62 includes the third area 78, and the first and second areas 70, 71, other embodiments may not include the higher-density first areas 70 but may include only the lower density third area 78 within the second area 71.
- FIG. 5 shows a filament structure 82 produced as described above in conjunction with FIG. 1, using a die-plate arrangement, such as the die-plate arrangement 62 shown in FIG. 4.
- the filament structure 82 includes three areas, each of which corresponds to a respective area of the die plate 64. More specifically, the filament structure 82 includes two of the first areas 70', where the prime (') symbol is used on the numeric labels to designate corresponding areas from the die plate 64 shown in FIG. 4.
- the first areas 70' are the areas of highest density in the filament structure 82 and correspond to the left and right bolsters of a vehicle seat cushion.
- the filament structure 82 is shown as a front cross-sectional view of a cushion blank for a seat bottom. As shown in FIG.
- the filament structure 82 has a cross section 68' that generally conforms to the predefined outline portion 68 of the template 66 shown in FIG. 4.
- the second area 72' has a lower density than the first areas 70', and this lower density may provide a softer feel and more comfort to a seated occupant.
- the third area 78' has the lowest density and provides a location for an SBR or other occupant sensors. It may be important for this area to be particularly soft so that it easily deflects to activate the sensor for even light-weight occupants.
- a die-plate arrangement such as the die-plate arrangement 46
- a funnel see, e.g., the funnel 26 shown in FIG. 1 — having a corresponding geometric configuration.
- FIG. 6 shows the die-plate arrangement 46, including the die plate 48 and the template 50.
- a molten polymer may be forced through the openings in the die plate 48 to yield strands 84 of material that will form a finished product after it is cooled.
- FIG. 6 shows a funnel 86 that also includes a template 88 configured similarly to the template 50 used with the die plate 48.
- the template 88 used with the funnel 86 helps to ensure that the desired shape of the finished product is maintained while the strands 84 fall from the die plate 48 and through the funnel 86.
- Method 650 includes heating 652 a polymeric material (e.g., 14) to a molten state, such that it becomes a molten polymer (as shown in FIG. 1).
- a polymeric material e.g., 14
- Method 650 includes introducing 654 the molten polymer into a die plate (e.g., 20, 48, and/or 64) having a first area (e.g., bolster area 54) containing a plurality of first holes (e.g., 58) therethrough and a second area (e.g., cushion area 56) containing a plurality of second holes (e.g., 60) therethrough, the first holes (e.g., 58) together defining a first open space per unit area in the first area (e.g., 54) and the second holes (e.g., 60) together defining a second open space per unit area in the second area (e.g., 56), and wherein the first open space per unit area is greater than the second open space per unit area (i.e., bolster area has different/higher density than cushion area e.g., holes in the first area e.g., 54 allow more material to pass through than the holes in the second area).
- a die plate e.g
- Method 650 includes cooling 656 the molten polymer after it leaves the die plate (e.g., 20, 48, and/or 64).
- first holes e.g., 58
- second holes e.g., 60
- the first holes e.g., 58
- the second holes e.g., 60
- cooling the polymer after it leaves the die plate produces a cushion blank
- the method further comprising masking a portion of the die plate (e.g., 20, 48, and/or 64) with a template having a predefined outline portion such that the cushion blank has a cross section that is defined by the predefined outline portion.
- the second area (e.g., 56) includes a location that corresponds to a location of an occupant sensor in the cushion blank (e.g., lower density area arranged adjacent an occupant sensors which activates a seat-belt reminder).
- the die plate (e.g., 20, 48, and/or 64) includes two of the first areas (e.g., 54), each being positioned in a location that corresponds to a respective bolster area of the cushion blank.
- the die plate (e.g., 20, 48, and/or 64) includes a third area (e.g., 78) containing a plurality of third holes (e.g., 81) therethrough, the third holes (e.g., 81) together defining a third open space per unit area in the third area (e.g., 78), and wherein the third open space per unit area is less than the second open space per unit area.
- a vehicle interior component formed by the method of any of the preceding claims.
- Method 650 includes heating a polymeric material (e.g., 14) to a molten state, such that it becomes a molten polymer.
- a polymeric material e.g., 14
- Method 650 includes introducing 652 the molten polymer into a die plate (e.g., 20, 48, and/or 64) including a first area (e.g., 54) having an open portion and a closed portion and a second area (e.g., 56) having an open portion and a closed portion, and wherein a ratio of the open portion of the first area (e.g., 54) to the first area (e.g., 54) is greater than a ratio of the open portion of the second area (e.g., 56) to the second area (e.g., 56).
- a die plate e.g., 20, 48, and/or 64
- a first area e.g., 54
- a second area e.g., 56
- Method 650 includes cooling 654 the molten polymer after it leaves the die plate (e.g., 20, 48, and/or 64).
- the first area (e.g., 54) includes a plurality of first holes (e.g., 58) defining the open portion of the first area (e.g., 54), and the second area (e.g., 56) includes a plurality of second holes (e.g., 60) defining the open portion of the second area (e.g., 56), and wherein there are more of the first holes (e.g., 58) per unit area in the first area (e.g., 54) than the second holes (e.g., 60) per unit area in the second area (e.g., 56).
- the first area (e.g., 54) includes a plurality of first holes (e.g., 58) defining the open portion of the first area (e.g., 54), and the second area (e.g., 56) includes a plurality of second holes (e.g., 60) defining the open portion of the second area (e.g., 56), and wherein the first holes (e.g., 58) have a larger diameter than the second holes (e.g., 60).
- the vehicle interior component includes a cushion blank having a cross section, the method further comprising masking a portion of the die plate (e.g., 20, 48, and/or 64) with a template having an outline defining the cross section of the cushion blank.
- the die plate e.g., 20, 48, and/or 64
- the die plate includes a plurality of the first areas (e.g., 54), each being positioned in a location that corresponds to a respective bolster area of the cushion blank.
- the second area (e.g., 56) includes a location configured to receive an occupant sensor in the cushion blank.
- the die plate (e.g., 20, 48, and/or 64) further includes a third area (e.g., 78) having an open portion and a closed portion, and wherein the ratio of the open portion of the second area (e.g., 56) to the second area (e.g., 56) is greater than a ratio of the open portion of the third area (e.g., 78)to the third area (e.g., 78).
- a third area e.g., 78 having an open portion and a closed portion
- a die-plate arrangement usable to produce a vehicle interior component includes a plate including a first area (e.g., 54) containing a plurality of first holes (e.g., 58) therethrough and a second area (e.g., 56) containing a plurality of second holes (e.g., 60) therethrough, the first holes (e.g., 58) together defining a first open portion in the first area (e.g., 54) and the second holes (e.g., 60) together defining a second open portion in the second area (e.g., 56), and wherein a ratio of the first open portion to the first area (e.g., 54) is greater than a ratio of the second open portion to the second area (e.g., 56).
- a ratio of the first open portion to the first area (e.g., 54) is greater than a ratio of the second open portion to the second area (e.g., 56).
- first holes e.g., 58
- second holes e.g., 60
- the first holes e.g., 58
- the second holes e.g., 60
- the die-plate arrangement further includes: a template configured to cover at least a portion of the first holes (e.g., 58), at least a portion of the second holes (e.g., 60), or at least a portion of the first holes (e.g., 58) and the second holes (e.g., 60), the template having a predefined outline portion defining a cross section of a portion of the vehicle interior component.
- the vehicle interior component is a seat cushion
- the plate includes two of the first areas (e.g., 54), each being positioned in a location that corresponds to a respective bolster area of the seat cushion.
- FIG. 7 illustrates a seat assembly 120 as a vehicle seat assembly 120 according to an embodiment.
- vehicle seat assembly 120 is illustrated and described, any seat assembly 120 may be employed.
- the seat assembly 120 may be utilized in a land vehicle, aircraft, watercraft, or the like.
- the seat assembly 120 may also be utilized as an office chair, comfort chair, or the like.
- the depicted seat assembly 120 includes a seat bottom cushion 122 to support a pelvis and thighs of a seated occupant.
- the seat assembly 120 also includes a seat back cushion 124 to support a back and shoulders of the seated occupant.
- a trim cover 26 is provided over the seat cushions 122, 124 to conceal the cushions 122, 124 and provide a uniform and smooth contact surface for the occupant.
- the seat cushions 122, 124 are manufactured from a system
- the 128 provides a pressurized molten thermoplastic resin to an extrusion die 130.
- the extrusion die 130 is arranged with a plurality of outlet ports or nozzles 132 to dispense a plurality of strands 134 of the molten thermoplastic resin.
- the strands 134 are dispensed through a tool 136 and into a fluid chamber 138.
- the tool 136 guides the strands 134 into the fluid chamber 138.
- the fluid chamber 138 may retain a fluid to resist and cool the strands 134, such as a water.
- the fluid chamber 138 resists a flow of the strands 134, thereby causing the strands 134 to buckle, loop, and intersect with adjacent strands 134 within a profile defined by the tool 136.
- the strands 134 may also expand and float within the fluid chamber 138.
- the strands 134 are cooled in the fluid chamber 138 by the fluid to form a unitary non-woven thermoplastic cushion 122. According to this process the non-woven thermoplastic cushion 122 is resisted, cooled, and solidified by the fluid.
- FIGS. 9 and 10 illustrate the tool 136 as a plate 136, referred to as a funnel plate 136.
- An aperture 140 is formed through the plate 136 to guide and funnel the strands 134 of thermoplastic resin into the cooling chamber 138.
- the through aperture 140 is sized to match an overall profile or perimeter of the seat bottom cushion 122 when viewed in a fore and aft direction, labeled Z in FIG.
- the] molten resin strands 134 are collected, guided, and cooled into a cushion 122 with an overall profile of the seat cushion 122.
- the plate 136 shapes the mesh of molten resin strands 134 into the overall profile of the cushion 122 as the strands 134 buckle, loop, and intersect.
- the plate 136 shapes the mesh before the mesh solidifies into the non-woven mesh assembly of the cushion 122.
- the through aperture 140 is provided with curvature to form the non-woven cushion 122 with curvature.
- the through aperture 140 has an overall convex profile to form a concave surface 142 on a top surface of the cushion 122 as a central seating surface.
- the through aperture 140 may also include a fillet or chamfer about the aperture 140 at an input end of the plate 136.
- the fillet may have a radius of at least twelve millimeters, or the chamfer may be sized twelve millimeters by twelve millimeters.
- the fillet or chamfer provide a leading edge about the aperture 140 to guide the strands 134 into the plate aperture 140.
- Seat cushions 122, 124 are often molded from a foam material. Foam cushions require dedicated tooling to mold each cushion component. In contrast to prior art mold tooling, the seat cushion 122 includes a dedicated tooling plate 136.
- the system 127 includes flexible equipment suitable for fabricating various cushions with various tooling plates.
- the extrusion die 130 includes a plurality of nozzles 132 that exceed an overall area of the through aperture 140. When utilized with the tool plate 136, the nozzles that are outside of the perimeter of the through aperture 140 are closed so that the extruded strands 134 are dispensed into the aperture 140 only. The closed or open operation of each nozzle 132 can be adjusted for each tooling plate 136.
- the tooling plate 136 induces a shape upon the cushion 122 before the strands 1 4 cool, cure, and solidify into the non-woven mesh cushion material. Secondary forming processes to create shape, contour, seating surfaces, and connection surfaces can be eliminated.
- the cushion 122 is cut from the otherwise continuous formed mesh assembly.
- the cushion 122 may be formed from a plurality of mesh assembly segments with a sequentially transitioning overall profile, which are combined within the trim cover 126. The segments may be glued or otherwise fastened together.
- the tooling plate 136 may have a suitable thickness beyond twelve millimeters.
- the tooling plate 136 may have a thickness of at least one inch.
- the tool 136 may be a tunnel mold 144 with a greater thickness than the tooling plate 136.
- the mold 144 has a thickness of six inches.
- the mold 144 includes the through aperture 140 formed through the mold 144 in the thickness direction to guide the molten thermoplastic resin strands 134 into the fluid chamber 138.
- the mold 144 also includes a plurality of cooling passages 146 formed into a body of the mold 144, as shown in FIG. 11.
- the cooling passages 146 extend toward the through aperture 140 to permit coolant to cool the mold 144 and consequently the mesh material within the cavity of the aperture 140.
- the mold 144 may extend into the fluid of the chamber 138 so that the mold 144 is cooled by the fluid of the chamber 138 and so that the fluid is also disposed within the aperture 140 to cool and form the non-woven mesh. Cooling of the mold 144 begins the cooling of the mesh strands 134 and forming of the shape of the cushion 122 while the strands 134 and fluid are within the cavity of the aperture 140 of the mold 144.
- Cooling of the mold 144 also maintains the mold 144 at a suitable temperature for repeated molding cycles for multiple mesh assemblies.
- the cooling passages 146 do not intersect with the through aperture 140.
- the cooling passages 146 intersect with the through aperture 140 to permit the fluid to pass from the cooling passages to the cavity within the through aperture 140.
- Method 150 includes dispensing 152, through a tool (e.g., 136) with an aperture (e.g., 140) sized to match an overall perimeter of a product, a molten thermoplastic resin, the tool (e.g., 136) generating a plurality of strands (e.g., 134) through the tool aperture (e.g., 140) while maintaining the plurality of strands (e.g., 134) within the overall perimeter of the product.
- Method 150 includes buckling 154 the strands (e.g., 134) by resisting a flow of the plurality of strands (e.g., 134), the buckled strands (e.g., 134) intersecting as a unitary non-woven body in a shape of the overall perimeter of the product.
- method 150 includes cooling 156 the plurality of strands (e.g., 134) as a unitary non-woven product.
- method 150 dispensing the molten thermoplastic resin from a plurality of nozzles, the plurality of nozzles, collectively, comprising an area greater than the area of the aperture (e.g., 140) and closing a subset of the plurality of nozzles outside the area of the aperture (e.g., 140).
- method 150 includes providing a die plate as the tool (e.g., 136).
- method 150 includes cooling the tool (e.g., 136).
- method 150 includes providing a mold (e.g., 144) with the aperture (e.g., 140) as the tool (e.g., 136).
- method 150 includes providing cooling passages (e.g., 146) through the mold (e.g., 144) to cool the unitary non-woven product.
- method 150 includes placing the mold (e.g., 144) in a cooling fluid, the cooling fluid cooling the unitary non-woven product.
- a product manufactured according to a method 160 includes dispensing 162, through a tool (e.g., 136) with an aperture (e.g., 140) sized to match an overall perimeter of a product, a molten thermoplastic resin, the tool (e.g., 136) generating a plurality of strands (e.g., 134) through the tool aperture (e.g., 140) while maintaining 163 the plurality of strands (e.g., 134) within the overall perimeter of the product.
- the method includes buckling 164 the strands (e.g., 134) by resisting a flow of the plurality of strands, the buckled strands (e.g., 134) intersecting as a unitary non-woven body in a shape of the overall perimeter of the product.
- the product further comprises a unitary non-woven cushion.
- the product further comprises a concave contoured perimeter.
- a tool e.g., 136) is described.
- the tool e.g., 136) includes a tool body with a through aperture (e.g., 140), the through aperture (e.g., 140) sized to match an overall perimeter of a cushion, the through aperture (e.g., 140) configured to receive a molten thermoplastic resin as a plurality of dispensed strands (e.g., 134).
- the tool through aperture (e.g., 140) is configured to maintain the plurality of dispensed strands (e.g., 134) within the overall perimeter of the cushion.
- the through aperture (e.g., 140) is shaped as a seat cushion, the through aperture (e.g., 140) configured to form a unitary non-woven cushion.
- the through aperture (e.g., 140) is shaped with curvature, the through aperture (e.g., 140) configured to form a unitary non-woven cushion with curvature.
- the through aperture (e.g., 140) is provided with a plurality of curvatures of at least twelve millimeters radii.
- the through aperture (e.g., 140) is formed with a convex perimeter to form a concave surface on the cushion.
- a system to manufacture a cushion includes a dispenser of molten thermoplastic resin.
- the system includes a tool (e.g., 136) oriented relative to the dispenser to receive the molten thermoplastic resin.
- the system further includes a fluid chamber to receive the molten thermoplastic resin to resist a flow of the plurality of dispensed strands (e.g., 134) to buckle the strands (e.g., 134) to intersect as a unitary non-woven body in a shape of the overall perimeter of the cushion.
- the tool e.g., 136) is oriented within the fluid chamber to cool the plurality of dispensed strands (e.g., 134) as a unitary non-woven cushion.
- cooling passages are formed through the tool (e.g., 136) to cool the plurality of dispensed strands (e.g., 134) as the unitary non-woven cushion.
- FIG. 7 illustrates a seat assembly 120 as a vehicle seat assembly 120 according to an embodiment.
- vehicle seat assembly 120 is illustrated and described, any seat assembly 120 may be employed.
- the seat assembly 120 may be utilized in a land vehicle, aircraft, watercraft, or the like.
- the seat assembly 120 may also be utilized as an office chair, comfort chair, or the like.
- the depicted seat assembly 120 includes a seat bottom cushion 122 to support a pelvis and thighs of a seated occupant.
- the seat assembly 120 also includes a seat back cushion 124 to support a back and shoulders of the seated occupant.
- a trim cover 126 is provided over the seat cushions 122, 124 to conceal the cushions 122, 124 and provide a uniform and smooth contact surface for the occupant.
- the seat cushion 122 is formed from a plurality of strands 228 of an extruded, expanded thermoplastic resin.
- the seat cushion 122 is also formed with a layer or film 230 of extruded thermoplastic resin bonded to, and formed unitarily with, the plurality of strands 228.
- the seat cushions 122, 124 are manufactured from a system 10 and a process of extruded thermoplastic resin mesh.
- a hopper 12 holds material stock that is to be extruded, e.g., as solid granules or pellets of the material.
- the material may be provided by plastic, such as a linear low-density polyethylene (LLDPE).
- LLDPE linear low-density polyethylene
- the extruder 16 melts and transports the material to a die plate 20.
- the extruder 16 includes a barrel that receives a rotatable screw, as well as heating elements. Rotation of the screw forces the material to move through the barrel and helps heat the material due to the friction generated as the screw rotates. The material exits the extruder 16 under pressure and in a molten state.
- the die plate 20 extrudes the material into filaments 24.
- the die plate 20 may be provided as described below depending on the direction of the extrusion relative to the final member 122, 124 produced from it. More specifically, the die plate 20 has multiple small circular, through holes or apertures through which the molten material passes. A single filament 24 is extruded from each die plate hole. The filaments 24 fall downward from the die plate under system pressure and the force of gravity to a funnel 26 as described below.
- the funnel 26 may have a cross-sectional shape that is the same as, or is different than, a shape collectively defined by the apertures in the die plate.
- the funnel 26 helps consolidate or group the filaments 24 into a more compact arrangement in which the filaments 24 bend or loop and each filament 24 contacts and bonds to at least one other filament 24.
- the funnel 26 has a funnel inlet 28 and a funnel outlet 30 that is smaller than the funnel inlet.
- the funnel 26 is narrower at the funnel outlet 30 than at the funnel inlet 28.
- Individual separated filaments 24 enter the funnel inlet 28, the filaments 24 bend/loop and move into contact as they accumulate and slide down the funnel 26 toward the funnel outlet, and the consolidated filament structure 32 exits the funnel outlet 30 and immediately enters a water tank.
- a liquid tank 34 holds water 36 or another fluid and receives the consolidated filament structure 32 from the funnel 26.
- the liquid 36 in the bath 34 helps temporarily support the consolidated filament structure 32 to prevent the filament structure from collapsing or condensing into a less open or less porous arrangement and helps maintain the desired porosity and density.
- the liquid 36 provides some resistance that causes additional bending and looping of the filaments 24 to further build the consolidated filament structure 32.
- the liquid 36 cools the filaments 24 from the outside to solidify the filaments 24 and prevent the filaments 24 from bonding at additional locations.
- the tank 34 includes various rollers and conveyors that help move the consolidated filament structure 32 through the liquid 36 and out of the liquid 36, such as a tractor conveyor 38.
- the rollers and conveyors speed may be controlled to move the consolidated filament structure 32 away from the funnel 26 at a speed that is dependent on the speed that the consolidated filament structure 32 exits the funnel 26.
- roller 40 helps keep the consolidated filament structure 32 submerged in the liquid 36 and guides the consolidated filament structure 32 through the liquid 36 toward a conveyor belt 42 and shaker table 44 that are disposed outside of the tank 34.
- the shaker table 44 shakes the consolidated filament structure 32 while it is on the conveyor belt 42 to remove liquid 36.
- Pressurized air may additionally or alternatively be blown toward the consolidated filament structure 32, and/or the consolidated filament structure 32 may be squeezed to remove liquid 36.
- the consolidated filament structure 32 may then be cut to a desired size and shape.
- FIG. 13 illustrates the top plan view of an extrusion die 20, according to an embodiment.
- the extrusion die 20 includes the plurality of apertures or nozzles 238 formed therethrough to extrude the strands 228.
- the die 20 also includes a plurality of slits 244 formed therethrough to extrude the film 230 concurrently with the strands 228.
- the strands 228 each have a small cross-section to generate an elongate material that is readily bent, buckled, and otherwise bonded in various directions to form the mesh pattern of the cushion 122.
- the film 230 has a cross section with a width that is wide enough to cover a majority or entirety of the cushion 22.
- the film 230 also has a relatively narrow thickness to provide a continuous layer 230 upon the cushion 122.
- the slit 244 has a parallel thickness to provide a planar film 230.
- any cross section slit 244 may be employed.
- the slit 244 may also have a thickness greater than a diameter of the strands 228.
- FIG. 14 illustrates an uninterrupted flow of the molten thermoplastic resin of strands 228 and the films 230 from the extrusion die 20.
- the term “molten” as used herein means that the material is at least partially melted.
- the material is necessarily in a fully liquid state; rather, it means that the material is not completely solid and is still able to flow through elements of the system 10.
- the molten material is still able to flow through the die plate 20, but it may be very viscous and starting to solidify.
- the material begins to cool as it ceases to be agitated by the extruder screw and gets farther from any heaters.
- the material may have a higher or lower viscosity, but if it is still partially melted and able to flow — even slowly — the term “molten” is applied herein.
- FIG. 15 also illustrates the extrusion of the strands 228 and the films 230 from the extrusion die 20.
- the molten strands 228 and films 230 are illustrated entering into the funnel plate 26 for passing through to the cooling chamber 34.
- flow of the strands 228 is resisted by the fluid to buckle, bend, and bond with each other, and so that a subset of the strands 228 also engage and bond the films 230.
- the strands 228 and the films 230 also cool and solidify within the cooling chamber 34 so that the strands 228 and the films 230 form a unitary body as the cushion 122.
- the films 230 may also bend or otherwise deform in the fluid chamber 34.
- the increased thickness of the films 230 relative to the strands 228 is optimized to resist deformation to the films 230 for a relatively flat film 230.
- one of the films 230 is formed on an exterior surface of the cushion 122.
- FIGS. 13, 14, and 15 also illustrate that another one of the films 230 is formed within the cushion 122 and in between two subsets of the strands 228.
- the exterior film 230 provides a surface tension for a continuous seating surface across the cushion 122 similar to a skin along a foam cushion for support and comfort to the occupant.
- the films 230 also provide surfaces for attaching other seating components by an adhesive, a hook and loop fastener, or the like.
- another layer 246 is attached to the exterior film 230.
- the layer 246 is the trim cover.
- the layer 246 is an actuator, such as an air bladder assembly.
- the layer 246 is a heat transfer layer such as a heating mat.
- the films 230 are formed impermeable across an area to contain an air permeable region of the cushion 122 formed from the mesh of strands 228 to provide a boundary to close off the mesh 228 for ventilation.
- An aperture 248 is formed through the film 230 to install a vent, ducting, plenum, or the like for conveying fluid through the cushion 122 for heating or cooling of the occupant.
- the aperture 248 is formed through the film 230 is a post extrusion operation, such as a stamping or cutting operation.
- any quantity of films 230 at any angular orientation may be developed based on the arrangement of the slits 244 in the extrusion die 20.
- the temperature and pressure of the extruder 16 may also be varied to vary the thickness or flatness of the films 230.
- Seat cushions 122, 124 are often molded from a foam material. Foam cushions require dedicated tooling to mold each cushion component. In contrast to prior art mold tooling, the seat cushion 122 includes a dedicated extrusion die 20.
- the system 10 includes flexible equipment suitable for fabricating various cushions with various extrusion dies 20. After fabricating a quantity of the cushions 122, the extrusion die 20 is removed from the extruder 16. Then, another extrusion die 20 is installed with a specific aperture 238 and slit 244 pattern for another cushion 122. Then a quantity of the second cushions 122 are extruded through the second extrusion die 20.
- Method 160 includes dispensing 172 (e.g., from an extruder) a molten thermoplastic resin as a plurality of strands (e.g., 228) and at least one film (e.g., 230).
- Method 170 includes resisting 174 (e.g., with a fluid such as water) a flow of the dispensed plurality of strands (e.g., 228), the resisting expanding the plurality of strands (e.g., 228) by intersecting and bonding at least a subset of the plurality of strands (e.g., 228) with each other and the at least one film (e.g., 230) as a unitary body.
- resisting 174 e.g., with a fluid such as water
- a fluid such as water
- method 170 includes cooling 176 the plurality of strands (e.g., 228) and the at least one film (e.g., 230) as a unitary product.
- method 170 includes cooling the plurality of strands (e.g., 228) and the at least one film (e.g., 230) with a fluid, wherein the flow of the plurality of strands (e.g., 228) is resisted by the fluid.
- method 170 includes cooling the plurality of strands (e.g., 228) in a fluid chamber.
- method 170 includes dispensing the at least one film (e.g., 230) on an exterior surface of the unitary body.
- method 170 includes dispensing the at least one film (e.g., 230) between at least two subsets of the plurality of strands (e.g., 228).
- method 170 includes forming an aperture through the at least one film (e.g., 230).
- dispensing further comprises dispensing the plurality of strands (e.g., 228) through a plurality of apertures in a tool; and dispensing the at least one film (e.g., 230) through at least one slit in the tool.
- method 170 includes removing the tool from an extruder; installing a second tool to the extruder; dispensing the molten thermoplastic resin as a second plurality of strands (e.g., 228) and a second film (e.g., 230) through the second tool; and resisting a flow of the dispensed second plurality of strands (e.g., 228), the resisting expanding the second plurality of strands (e.g., 228) by intersecting at least a subset of the second plurality of strands (e.g., 228) with each other and the second film as a second unitary body that is different from the first unitary body.
- method 170 includes assembling a seat with a cushion formed by the method.
- a product is described.
- the product is formed by the method of any of the preceding techniques.
- Method 180 includes dispensing 172 a molten thermoplastic resin as a plurality of strands (e.g., 228) and at least one fdm (e.g., 230).
- Method 170 includes resisting 174 a flow of the dispensed plurality of strands (e.g., 228), the resisting expanding the plurality of strands by intersecting at least a subset of the plurality of strands (e.g., 228) with each other and the at least one film (e.g., 230) as a unitary body.
- method 170 includes forming the at least one film (e.g., 230) on an exterior surface of the unitary body.
- method 170 includes forming the at least one film (e.g., 230) as an impermeable film (e.g., 230) between at least two subsets of the plurality of strands (e.g., 228).
- method 170 includes forming an aperture through the at least one film (e.g., 230).
- a seat assembly is manufactured by a method 180.
- Method 180 includes assembling 182 a scat with a cushion formed by the techniques described above.
- method 180 includes attaching 184 at least one of a seat trim, an actuator, and/or a heat transfer layer to the at least one film (e.g., 230).
- a product is described.
- the product includes an expanded mesh of a plurality of interconnected thermoplastic strands (e.g., 228) and at least one thermoplastic film (e.g., 230) integrally bonded to at least one subset of the plurality of strands (e.g., 228) as a unitary body.
- the at least one film (e.g., 230) is oriented on an exterior surface of the unitary body.
- the at least one film (e.g., 230) is impermeable.
- the at least one film (e.g., 230) is oriented between at least two subsets of the plurality of strands (e.g., 228).
- an aperture extends through the at least one film (e.g., 230).
- a seat assembly comprises the product of any of the above techniques, as a seat cushion.
- the seat assembly includes at least one of a seat trim, an actuator, and/or a heat transfer layer attached to the at least one film (e.g., 230).
- a tool is described.
- the tool comprises a body with a plurality of apertures formed through the body and at least one slit formed through the body to dispense a molten thermoplastic resin through the plurality of apertures and the at least one slit.
- a system comprising: an extruder of molten thermoplastic resin; and the tool of claim 65 mounted to the extruder to dispense the molten thermoplastic resin through the tool as a plurality of strands (e.g., 228) and at least one film (e.g., 230).
- a hopper 12 holds solid granules of a polymeric material 14 that is to be extruded.
- the material 14 is linear low- density polyethylene (LLDPE), although methods described herein may use different types of polymers as desirable and effective to produce the finished product.
- LLDPE linear low- density polyethylene
- the material 14 is fed from the hopper 12 to an extruder 16.
- the extruder 16 melts and transports the material 14 to a die-plate arrangement 18, which includes a die plate 20.
- the extruder 16 may be, for example, a conventional extruder that includes a barrel that receives a rotatable screw. Rotation of the screw forces the material 14 to move through the barrel and helps heat the material because of the friction generated as the screw rotates. Heating elements may be disposed on the barrel and heat the polymeric material 14 inside the barrel.
- the material 14 exits the extruder 16 at location 22 under pressure and in a molten state.
- molten as used herein means that the material is at least partially melted. It does not mean that the material is necessarily in a fully liquid state; rather, it means that the material is not completely solid and is still able to flow through elements of the system 10. For example, the molten material is still able to flow through the die plate 20, but it may be very viscous and starting to solidify.
- the material will begin to cool as it ceases to be agitated by the extruder screw and gets farther from any heaters. At different points in the process 11, the material may have a higher or lower viscosity, but if it is still partially melted and able to flow — even slowly — the term “molten” is applied herein.
- the die plate 20 extrudes the material 14 into filaments 24.
- a single filament 24 is extruded from each die-plate hole.
- the filaments 24 fall downward from the die plate 20 under system pressure and the force of gravity to a funnel 26.
- the funnel 26 helps consolidate or group the filaments 24 into a more compact arrangement in which the filaments 24 bend or loop, and each filament 24 contacts and bonds to at least one other filament 24.
- the funnel 26 has a funnel inlet 28 and a funnel outlet 30 that is smaller than the funnel inlet 28. More specifically, the funnel 26 is narrower at the funnel outlet 30 than at the funnel inlet 28.
- the filaments 24 then bend or loop and move into contact with each other as they accumulate and slide down the funnel 26 toward the funnel outlet 30, and the consolidated filament structure 32 exits the funnel outlet 30 and enters a water tank 34.
- the water tank 34 holds water 36 and receives the consolidated filament structure 32 from the funnel 26.
- the water 36 performs at least two functions. First, it helps to temporarily support the consolidated filament structure 32 to prevent it from collapsing or condensing into a less open or less porous arrangement. As such, the water 36 provides some resistance that causes the additional bending and looping of the filaments 24 to further build the consolidated filament structure 32. Second, the water 36 cools the polymeric filaments 24 from the outside to solidify them. The temperature of the water 36 may be much less than the temperature of the filaments 24 as they leave the die plate 20, for example, it may be at the temperature of the ambient environment surrounding the tank 34. Although the fluid used in this embodiment is liquid water 36, in other embodiments, other types of fluids may be used.
- the water tank 34 includes various rollers and conveyors that help move the consolidated filament structure 32 through and out of the water 36.
- a tractor conveyor 38 is submerged in the water 36 and engages opposing lateral sides of the consolidated filament structure 32 to move it away from the funnel 26 at approximately the same speed as the consolidated filament structure 32 exits the funnel 26.
- the gap between the opposing portions of the tractor conveyor 38 is slightly narrower than the width of the consolidated filament structure 32 to allow the tractor conveyor 38 to better grip the consolidated filament structure 32.
- FIG. 1 is a schematic representation and has been simplified for illustration purposes.
- a conveyor such as the tractor conveyor 38, may be located toward the front and back of the system 10 as it is oriented in FIG. 1, rather on the left and right sides as shown.
- Another roller 40 helps keep the consolidated filament structure 32 submerged and helps guide it through the water 36 toward a conveyor belt 42 and a shaker table 44 that are positioned outside of the water tank 34.
- the shaker table 44 shakes the consolidated filament structure 32 while it is on the conveyor belt 42 to remove at least some of the water 36. Pressurized air may also be blown toward the consolidated filament structure 32, which may also be squeezed to remove more of the water 36.
- the consolidated filament structure 32 may be cut to a desired size and shape.
- FIG. 16 shows a die-plate arrangement 46, including a die plate 48 and a template 50, which may be used to impart a particular shape to a finished product.
- a molten polymer may be forced through the openings in the die plate 48 to yield molten polymeric filaments 52 — only some of which are labeled in FIG. 17 for clarity — of material that will form a finished product after it is cooled.
- a funnel 86 also includes a template 88 configured similarly to the template 50 used with the die plate 48. The template 88 used with the funnel 86 helps to ensure that the desired shape of the finished product is maintained while the filaments 52 fall from the die plate 48 and through the funnel 86.
- the filaments 52 fall from the die plate 48, they will begin to cool as they approach the funnel 86. Even though the filaments 52 will ultimately be cooled in a fluid bath — see e.g., the water tank 34 shown in FIG. 1 — it may be desirable to have the filaments 52 maintain their temperature longer before they reach the funnel 86.
- embodiments described herein may include using a heating arrangement 90 to surround the molten polymeric filaments 52 as they fall from the die plate 48 to the funnel 86.
- the heating arrangement 90 is a rectangular heating structure that heats the filaments 52 on four sides. It includes four heating plates 92, 94, 96, 98, which heat an entire perimeter of the molten polymeric filaments 52.
- FIG. 16 shows them as having gaps between them at the four comers.
- a heating arrangement such as the heating arrangement 90, surround the associated filaments without having any spaces or gaps around the perimeter of the filaments.
- Embodiments described herein contemplate the use of different types of heating arrangements, including different geometric configurations, distances from the associated filaments, and the amount of heat generated.
- a heating arrangement such as the heating arrangement 90, may use radiant heat as the sole or primary source of thermal control.
- convection heaters or some combination of convection heaters and radiant heaters — may be used.
- the heating plates 92, 94, 96, 98 are placed between 100 millimeters (mm) and 150 mm from the outermost filaments 52.
- the heating arrangement 90 is positioned at least 100 mm-150 mm from any of the filaments 52.
- the heating arrangement 90 can be operated to control an ambient temperature around the molten polymeric filaments 52 to a temperature of 60°C-140°C, although in other embodiments, temperatures outside this range may be used, depending on the application and the desired properties of the finished product.
- the heating arrangement 90 and specifically, the heating plates 92, 94, 96, 98 are attached directly to the die plate 48, although in other embodiments, a heating arrangement may be self-supporting or may be attached to a structure other than the associated die plate.
- the heating arrangement 90 is configured to heat an outer portion of the filaments 52 and can be operated to maintain a constant temperature around the outside of the filaments 52 so there is uniform bonding between the filaments 52. Without a heating arrangement, such as the heating arrangement 90, ambient conditions may affect of the filaments 52 differently from others as they fall to the funnel 26. This could lead to inconsistent bonding between the filaments 52 on different parts of the finished product. In contrast, by heating an entire perimeter of the molten polymeric filaments 52, the bonding can be consistently maintained.
- adding heat as the filaments 52 fall from the die plate 48 may create stronger bonds between the filaments 52 by either keeping them at their melting temperature longer, or by having them melt to an even greater liquid state as they travel downward. This may provide a stronger or tougher outside portion of a finished product — i.e., a type of “shell” may be formed — which may be desirable in some applications.
- FIG. 1 Another benefit of using a heating arrangement, such as the heating arrangement 90, is that it may work in conjunction with a second or “co-extruded” material added to the method 11 shown in FIG. 1.
- Shown in phantom in FIG. 1 is another extruder 68 configured to receive a polymeric material 70 from a hopper 72.
- the polymeric material 70 is different from the polymeric material 14, which is fed into the extruder 16 from the hopper 12. Similar to the extruder 16, the extruder 68 heats the material 70 to a molten state and moves it to the die-plate arrangement 18.
- the material 70 may be conveniently referred to as a first material, and after it is heated it may be referred to as a first molten polymer 70.
- the material 14 may be conveniently referred to as a second material, and after it is heated it may be referred to as a second molten polymer.
- the extruder 68 is positioned such that it feeds the first molten polymer 70 toward an outside edge of the die plate 20 where it will form a plurality of first molten polymeric filaments that will at least partially surround second polymeric filaments 24.
- FIG. 16 The relationship between the inner and outer polymeric filaments created with a coextrusion system is illustrated in FIG. 16.
- the molten polymeric filaments 52 are made from a first molten polymer and are positioned near the outside edge of the die plate 48.
- a second group of molten polymeric filaments 74 are made from a second molten polymer and are positioned inward from the first molten polymer.
- the first molten polymeric filaments 52 at least partially surround the second molten polymeric filaments 74.
- FIG. 16 is a schematic representation of the actual process, and some elements are removed for clarity. In practice, the area below the die plate 48 leading into the funnel 26 would be crowded with many more of the first and second molten polymeric filaments 52, 74 than are illustrated.
- the top portion 79 of the filament 76 will be much hotter than the bottom portion 80. There will be a temperature gradient between the top portion 79 and the bottom portion 80, which may or may not be uniform depending on the ambient conditions surrounding the filament 76. In the embodiment shown in FIG. 17, however, a heating arrangement 83 is positioned around the filament 76 to control the ambient temperature, and ultimately the temperature of the filament 76 itself.
- FIG. 17 shows the heating arrangement 83 on only two sides of the filament 76, it is understood that the heating arrangement 83 may be configured to surround the filament — and indeed all the filaments exiting the die plate — such as illustrated in FIG. 16. As described above, controlling the temperature of the molten polymeric filaments as they leave a die plate may provide desirable features in a finished product.
- FIG. 18 shows a cross section of a consolidated filament structure 84 made in accordance with embodiments of systems and methods described herein. As shown in FIG. 18, the consolidated filament structure 84 includes an outer portion 87 positioned around the perimeter, and an inner portion 85 positioned inward from the outer portion 87.
- the outer portion 87 is different from the inner portion 85.
- the outer portion 87 may have better bonding between the individual filaments because of the use of a heating arrangement, such as the heating arrangement 90 shown in FIG. 17. And as a result, it may also be denser.
- the outer portion 87 may comprise a first group of molten polymeric filaments made from a first material, while the inner portion 85 may comprise a second group of molten polymeric filaments made from a second material that is different from the first material.
- two different materials may be used in conjunction with a heating arrangement to provide a finished product having a first material around the outside of the product, which is also more strongly bonded and denser than a second material positioned inward from the first material. Therefore, embodiments as described herein provide a system and method with the flexibility to control the properties of a finished product through the use of different materials and heat control.
- Method 190 includes heating 191 a polymeric material (e.g., 14 and/or 70) to a molten state, such that it becomes a molten polymer.
- Method 190 includes introducing 192 the molten polymer into a die plate (e.g., 48) having a plurality of holes disposed therethrough such that the molten polymer moves through the holes and forms a plurality of molten polymeric filaments.
- Method 190 includes surrounding 193 the molten polymeric filaments with a heating arrangement (e.g., 92-98) operable to apply heat to the molten polymeric filaments.
- a heating arrangement e.g., 92-98
- Method 190 includes introducing 186 the molten polymeric filaments into a bath to cool the molten polymeric filaments to form a consolidated filament structure.
- the heating arrangement (e.g., 92-98) comprises a rectangular heating structure to surround the molten polymeric filaments as the molten polymeric filaments leave the die plate (e.g., 48).
- the die plate (e.g., 48) includes a plurality of sides, and the heating arrangement is attached to each of the sides of the die plate (e.g., 48).
- the heating arrangement is configured to control an ambient temperature around the molten polymeric filaments to a temperature of 60C-140C.
- the heating arrangement is positioned at least 100 mm-150 mm from the molten polymeric filaments.
- the molten polymeric filaments include an outer portion (e.g., 87) disposed toward an outside edge of the die plate (e.g., 48), and an inner portion (e.g., 85) disposed inward from the outer portion (e.g., 87), and the heating arrangement is configured to heat the outer portion (e.g., 87) such that bonding between the molten polymeric filaments of the outer portion (e.g., 87) is greater than bonding between the molten polymeric filaments of the inner portion (e.g., 85).
- the molten polymer is a first molten polymer comprising a first material and the molten polymeric filaments are first molten polymeric filaments
- the method further comprises introducing a second molten polymer comprising a second material into the die plate (e.g., 48) such that the second molten polymer moves through the holes in the die plate (e.g., 48) and forms a plurality of second molten polymeric filaments.
- the first molten polymer is introduced into the die plate (e.g., 48) toward an outside edge of the die plate (e.g., 48), and the second molten polymer is introduced into the die plate (e.g., 48) inward from the first molten polymer such that the first molten polymeric filaments at least partially surround the second molten polymeric filaments.
- Method 194 includes heating 195 a first polymeric material to a molten state to create a first molten polymer.
- Method 194 includes extruding 196 the first molten polymer to form a plurality of first molten polymeric filaments. Method 194 includes heating 197 an entire perimeter of the first molten polymeric filaments. Method 194 includes cooling 198 the first molten polymeric filaments in a fluid bath to create a consolidated filament structure.
- the first molten polymer comprises a first material
- the method further comprises extruding a second molten polymer comprising a second material to form a plurality of second molten polymeric filaments.
- the first molten polymer and second molten polymer are extruded such that the first molten polymeric filaments at least partially surround the second molten polymeric filaments.
- heating the entire perimeter of the first molten polymeric filaments comprises heating the first molten polymeric filaments on four sides of the first molten polymeric filaments. [0206] In some embodiments, heating the entire perimeter of the first molten polymeric filaments comprises heating the first molten polymeric filaments to a temperature of 60C-140C.
- the entire perimeter of the first molten polymeric filaments is heated such that bonding between the first molten polymeric filaments is greater than bonding between the second molten polymeric filaments.
- a vehicle interior component is formed by any of the above techniques.
- Method 200 includes heating 202 a polymeric material to create a molten polymer.
- Method 200 includes forming 204 a plurality of molten polymeric filaments from the molten polymer by extruding the molten polymer through a die plate (e.g., 48).
- Method 200 includes heating 206 an entire perimeter of the molten polymeric filaments with a heating arrangement.
- Method 200 includes cooling 208 the molten polymeric filaments in a fluid bath to form a consolidated filament structure.
- the heating arrangement is attached to the die plate (e.g., 48).
- the molten polymer is a first molten polymer comprising a first material and the molten polymeric fdaments are first molten polymeric filaments
- the method further comprises introducing a second molten polymer comprising a second material into the die plate (e.g., 48) such that the second molten polymer moves through the die plate (e.g., 48) and forms a plurality of second molten polymeric filaments.
- the first molten polymer is introduced into the die plate (e.g., 48) toward an outside edge of the die plate (e.g., 48), and the second molten polymer is introduced into the die plate (e.g., 48) inward from the first molten polymer such that the first molten polymeric filaments at least partially surround the second molten polymeric filaments.
- a seat assembly 320 such as a vehicle seat assembly 320 is illustrated.
- the seat assembly 320 may be shaped and sized as a front row driver or passenger seat, a second, third, or other rear row seat, and may include bench-style seats as shown, bucket seats, or other seat styles.
- the seat assembly 320 may be a non-stowable seat or a stowable seat that may be foldable and stowable in a cavity in the vehicle floor. Additionally, the seat assembly 320 may be configured for use with other non-vehicle applications.
- the seat assembly 320 optionally includes a frame 322 or other support structure.
- the seat assembly 320 has seat components, and these seat components include at least a seat bottom 324 and a seat back 326.
- the seat bottom 324 may be sized to receive a seated occupant to support a pelvis and thighs of the occupant.
- the seat back 326 may be sized to extend upright from the seat bottom 324 to support a back of the occupant.
- the seat assembly 320 may additionally have a head restraint 327, with the head restraint 327 illustrated for an adjacent seat assembly only.
- the seat bottom 324 has a seat bottom cushion 328.
- the seat back 326 has a seat back cushion 330.
- the frame 3]22 may include wire suspension mats or other structure to support the cushions 328, 330.
- the frame 322 provides rigid structural support for the seat components, e.g., the seat bottom 324 and seat back 326, and may be provided as multiple frame members that are moveable relative to one another to provide adjustments for the seat assembly.
- the frame may be formed from a stamped steel alloy, a fiber reinforced polymer, or any suitable structural material.
- the frame 322 may further include a substrate, e.g., a panel, to support the associated cushion.
- One or more trim covers 332 are used to cover the seat bottom cushion 328 and the seat back cushion 330 and provide a seating surface for the seat assembly 320.
- the vehicle seat assembly 320 is shown without a trim cover, and the adjacent seat assembly illustrates the him cover 332.
- the trim cover 332 covers both of the cushions 328, 330.
- multiple trim covers are provided to cover the seat bottom cushion and the seat back cushion.
- the trim cover 332 may be formed from one or more panels of a fabric, leather, leatherette, vinyl, or other material.
- a seating cushion 340 is described in further detail below, and the description may similarly be applied to the seat bottom cushion 328 or the seat back cushion 330.
- the seating cushion 340 includes at least one nonfoam component or member 342.
- the seating cushion 340 is formed solely from the nonfoam component 342, such that the nonfoam component 342 provides all of the cushioning for the seat component between the frame 322 and the trim cover 332.
- the seating cushion 340 may be formed from a nonfoam component 342 as well as one or more foam components, such as a component formed from molded polyurethane foam, or other nonfoam components.
- the seating cushion 340 may have the nonfoam and foam components positioned to provide different regions of the cushion 340 for the seating component.
- the seating cushion 340 may have a thin foam or other material layer positioned between the nonfoam component 342 and the trim cover 332 to provide additional cushioning for one or more regions of the seating component.
- the seat assembly 320 may have a heating pad or heating mat positioned between the cushion 340 and the trim cover 332.
- FIG. 20 depict a cross-section of a nonfoam component 342 in accordance with an embodiment of the present disclosure.
- the nonfoam component 342 is a vehicle seatback or a vehicle seat bottom.
- Nonfoam component 342 includes plastic mesh base 360.
- Plastic mesh base 360 includes a first shaped plurality 362 of three-dimensional filament loops composed of a first thermoplastic polymer.
- the first shaped plurality 362 of three-dimensional filament loops have a general block shape or any shape suitable to function as a cushion.
- Plastic mesh base 360 has a first edge 364, a second edge 366, a first face 368, and a second face 370.
- a first bolster 374 is attached to the plastic mess base at the first edge 364.
- a second bolster 376 is attached to the plastic mesh base 360 at the second edge 366. The loops stick to each other.
- the first bolster 374 includes a second shaped plurality 390 of three-dimensional filament loops composed of a thermoplastic polymer.
- the second shaped plurality 390 of three-dimensional filament loops have a general bolster shape or any shape suitable to function as a side bolster.
- the second bolster 376 includes a third shaped plurality 392 of three-dimensional filament loops composed of a thermoplastic polymer.
- the third shaped plurality 392 of three-dimensional filament loops have a general bolster shape or any shape suitable to function as a side bolster.
- the first and second bolsters 374 and 376 have the same shape.
- a third (front) bolster 344 can be provided at the front of the nonfoam component 342.
- the nonfoam component or member 342 of the seating cushion 340 is formed by at least two different stranded mesh material, also known as an entangled three-dimensional filament structure.
- the stranded-mesh materials are made from a polymeric mesh having a plurality of integrated polymeric strands.
- the stranded-mesh materials may be made from, for example, two or more linear low-density polyethylene (LLPDE) materials, although other polymers and materials effective to provide the desired properties and functionality are contemplated.
- LLPDE linear low-density polyethylene
- the stranded-mesh material may be formed using extruded filaments of two or more linear low-density polyethylenes (LLDPE) that are randomly entangled, bent, looped, or otherwise positioned and oriented, and directly bonded to each other to provide a porous mesh structure, an example of which is shown in a closer view in FIG. 20.
- LLDPE linear low-density polyethylenes
- the second shaped plurality 390 of three-dimensional filament loops is composed of a second thermoplastic polymer, different from the first thermoplastic polymer.
- the third shaped plurality 392 of three-dimensional filament loops is composed of the second thermoplastic polymer.
- the third shaped plurality 392 of three-dimensional filament loops is composed of a third thermoplastic polymer, different from the first and second thermoplastic polymers.
- the optional third bolster 344 is made of a shaped plurality of three- dimensional filament loops composed of one of the first, second or third thermoplastic polymers, or yet a fourth thermoplastic polymer, different from the first, second and third thermoplastic polymers.
- the plastic mesh base is from 60 to 95 volume percent air.
- the plastic mesh base has a density from about (1.5 - 3.5 lbs/ft 3 or 24-56 kg/m 3 ).
- the plurality of three-dimensional filament loops includes a plurality of fused or bonded connections 378 in which two loops are attached to each other.
- the three-dimensional filament loops are an extruded thermoplastic polymer.
- thermoplastic polymer examples include, but are not limited to polyolefin, polystyrene-based thermoplastic elastomer, polyester-based thermoplastic elastomer, polyurethane-based thermoplastic elastomer, and polyamide-based thermoplastic elastomer.
- the thermoplastic polymer includes linear low-density polyethylene.
- the three-dimensional filament loops have a fineness from 200 to 10000 decitex. In a refinement, the three-dimensional filament loops have a fineness from 200 to 5000 dtex. In a further refinement, the three-dimensional filament loops have a fineness from 200 to 3000 dtex.
- the first, second, third and/or fourth thermoplastic polymers can independently be any suitable thermoplastic elastomers (TPE), like LLDPE, thermoplastic polyether ester elastomer (TPEE), thermoplastic polyurethane (TPU), styrenic thermoplastic elastomer (TPS), or thermoplastic vulcanizates (TPV).
- TPE thermoplastic elastomers
- TPEE thermoplastic polyether ester elastomer
- TPU thermoplastic polyurethane
- TPS styrenic thermoplastic elastomer
- TPV thermoplastic vulcanizates
- the first, second, third and/or fourth thermoplastic polymers can independently vary from one or more of the other to provide a variable density at various locations of the nonfoam component 342. For instance, the first and/or second bolster 374, 376 could have a higher density than the mesh base 360.
- the first thermoplastic polymer that comprises the first shaped plurality 362 of three-dimensional filament loops is composed of LLDPE (Linear Low Density Polyethylene) having a first density while one or more of the second, third and fourth thermoplastic polymers that comprises the second shaped plurality 390 of three-dimensional filament loops, the third shaped plurality 392 of three-dimensional filament loops, and the shaped plurality of three-dimensional filament loops that make up the first, second and third bolsters 374, 376 and 344, respectively is composed of a LLDPE (Linear Low Density Polyethylene) having a second density greater than the first density.
- LLDPE Linear Low Density Polyethylene
- the first shaped plurality 362 of three-dimensional filament loops is composed of first material having a first characteristic while one or more of the second, third and fourth thermoplastic polymers that comprises the second shaped plurality 390 of three-dimensional filament loops is composed of a second material having a different characteristic than the first characteristic.
- other different characteristics, in addition to density, can include different (such as higher or lower) bonding quality or heat resistance.
- a method is provided, and may be used to form the member 342, assemble the cushion 340, and assemble the seat assembly 320.
- the method may have greater or fewer steps than described below, and various steps may be performed in another order, sequentially, or simultaneously.
- a consolidated filament structure 32 is formed.
- This consolidated filament structure 32 may provide the stranded mesh material from which the cushion 340 and member 342 as described above is formed.
- a first hopper 12 holds a first material stock that is to be extruded, e.g., as solid granules or pellets of the material.
- the first material may be provided by plastic, such as a linear low-density polyethylene (LLDPE).
- LLDPE linear low-density polyethylene
- a second hopper 72 is also provided that holds a second material stock that is to be extruded, e.g., as solid granules or pellets of the material.
- the second material may be provided by plastic, such as a linear low-density polyethylene (LLDPE) being a different grade than the LLDPE of the first material.
- LLDPE linear low-density polyethylene
- the second material could be a different grade (grade 1, grade 2, etc.) or different type (TPEE, TPV, etc.).
- the second material is fed from the second hopper 72 to a second extruder 68.
- the first and second extruders 16 and 72 melt the first and second materials 14 and 70 respectively and transport the molten first and second materials 14 and 70 to a die plate 20, respectively.
- the molten first and second materials do not mix with each other.
- the first and second extruders 16 and 72 coextrude the first and second materials respectively to the die plate 130.
- the extruders 16 and 72 include a barrel that receives a rotatable screw, as well as heating elements. Rotation of the screw forces the first and second materials 14 and 70 to move through the respective barrels and helps heat the first and second material 14 and 70 due to the friction generated as the screws rotate.
- the first and second materials 14 and 70 exit the extruders 16 and 72 under pressure and in a molten state.
- the die plate 20 extrudes the first and second materials into filaments 24. More specifically, the filaments comprise a first plurality of filaments 24’ made of the first material, a second plurality of filaments 24”, and an optional third plurality of filaments 24”’. In at least one embodiment, one or both of the second plurality of filaments 24” and the third plurality of filaments 24’” are made of the second material. Alternately, one of the second plurality of filaments 24” and the third plurality of filaments 24’” could be made of the first material. Still further, in at least one embodiment, the first plurality of filaments 24’, the second plurality of filaments 24”, and the third plurality of filaments 24’” could all be made of different materials, either by material type and/or by grade.
- the die plate 20 may be provided as described below depending on the direction of the extrusion relative to the final member 342 produced from it. More specifically, the die plate 20 has multiple small circular through holes or apertures 351 through which the molten material passes, as shown in FIG. 21. A single filament 380, 384, 386, 388 is extruded from each die plate hole. The die plate 20 has a central portion 351 and two side portion 355 on opposite sides of the central portion 351.
- the first material is extruded from the central portion 351 to form filaments 384that form the plastic mesh base 360 and one or both of the two side portions 355 extrudes a different material from the first material, such as the second material and optionally the third material, to form the first bolster 374 and the second bolster 376.
- the filaments 140 fall downward from the die plate under the pressure and the force of gravity to a funnel 26 as described below.
- the funnel 26 may have a cross-sectional shape that is the same as or is different than a shape collectively defined by the apertures in the die plate.
- the funnel 26 helps consolidate or group the filaments 380 into a more compact arrangement in which the filaments 380 bend or loop and each filament 380 contacts and bonds to at least one other filament 380.
- the funnel 26 has a funnel inlet 28 and a funnel outlet 30 that is smaller than the funnel inlet 28.
- the funnel 26 is narrower at the funnel outlet 30 than at the funnel inlet 28.
- Individual separated filaments 380 enter the funnel inlet 28, the filaments 380 bend/loop and move into contact as they accumulate and slide down an angled surface of the funnel 26 toward the funnel outlet 30 creating a material skin utilizing 2-3 rows of filaments, and the consolidated filament structure 32 exits the funnel outlet 30 and immediately enters a water tank 34.
- a liquid tank 34 holds water 36 or another fluid and receives the consolidated filament structure 32 from the funnel 26.
- the liquid 36 in the bath 34 helps temporarily support the consolidated filament structure 32 to prevent the filament structure from collapsing or condensing into a less open or less porous arrangement and maintain the desired porosity and density. As such, the liquid 36 provides some resistance that causes additional bending looping of the filaments 380 to further build the consolidated filament structure 32. Second, the liquid 36 cools the filaments 380 from the outside to solidify the filaments 380 and prevent the filaments 380 from bonding at additional locations.
- the tank 34 includes various rollers and conveyors that help move the consolidated filament structure 32 through the liquid 36 and out of the liquid 36, such as a tractor conveyor 38.
- the rollers and conveyors speed may be controlled to move the consolidated filament structure 32 away from the funnel 26 at a speed that is dependent on the speed that the consolidated filament structure 32 exits the funnel 26.
- Other rollers, such as roller 40 helps keep the consolidated filament structure 32 submerged in the liquid 36 and guides the consolidated filament structure 32 through the liquid 36 toward a conveyor belt 42 and shaker table 44 that are disposed outside of the tank 34.
- the shaker table 44 shakes the consolidated filament structure 32 while it is on the conveyor belt 42 to remove liquid 36.
- Pressurized air may additionally or alternatively be blown toward the consolidated filament structure 32, and/or the consolidated filament structure 32 may be squeezed to remove liquid 36.
- components 12, 72, 16, 20 and 26 are shown in front view in FIG. 1, while for better understanding, components 34, 38, 40, 42, and 44 and funnels are shown from a side view.
- the consolidated filament structure 32 may be generally formed with two or more of the surfaces for the member 342 based on the shape of the die 20 and the funnel 26. In other examples, the consolidated filament structure 32 may require further processing as described below to reach the desired shape of the member 342.
- the consolidated filament structure 32 is then cut to a desired size and shape to form the outer perimeter, or overall or outer shape of the member 342.
- the seat assembly 320 can be assembled.
- the member 342 is attached to a frame 322 of a seat assembly to provide a cushion 340 therefor.
- a trim cover 332 may be positioned over the member 342 and cushion 340.
- the trim cover 332 may be connected to the cushion 340 and/or the frame 322. In one example, the trim cover 332 may be connected via tie downs or other fasteners.
- three-dimensional filament loops and the optional skin layers if present are composed of a thermoplastic polymer.
- the vehicle seat cushion component includes a plastic mesh base (e.g., 360), the plastic mesh base (e.g., 360) comprising a first plurality of three-dimensional filament loops, the first plurality of three-dimensional filament loops composed of a first thermoplastic polymer, the plastic mesh base (e.g., 360) having a first side edge, a second side edge, a front edge, a rear edge, a first face, and a second face.
- the vehicle seat cushion component includes a first bolster attached to the plastic mesh base (e.g., 360) at the first edge, the first foamed bolster comprising a second plurality of three-dimensional filament loops, the second plurality of three-dimensional filament loops composed of a second thermoplastic polymer different from the first thermoplastic polymer.
- the vehicle seat cushion component includes a second bolster attached to the plastic mesh base (e.g., 360) at the second edge.
- the second bolster comprises a third plurality of three- dimensional filament loops, the third plurality of three-dimensional filament loops composed of the second thermoplastic polymer.
- the second bolster comprises a third plurality of three- dimensional filament loops, the third plurality of three-dimensional filament loops composed of a third thermoplastic polymer different from the first thermoplastic polymer.
- the second bolster comprises a third plurality of three- dimensional filament loops, the third plurality of three-dimensional filament loops composed of a third thermoplastic polymer different from the first and second thermoplastic polymers.
- the second bolster comprises a third plurality of three- dimensional filament loops, the third plurality of three-dimensional filament loops composed of a third thermoplastic polymer different from the first thermoplastic polymer.
- the vehicle seat cushion component further comprises a third bolster comprises a fourth plurality of three-dimensional filament loops, the fourth plurality of three- dimensional filament loops composed of a fourth thermoplastic polymer different from the first thermoplastic polymer.
- the plurality of three-dimensional filament loops includes a plurality of fused connection in which two loops are attached to each other. [0249] In some embodiments, at least a subset of loops in the plurality of three-dimensional filament loops are not parallel or aligned with each other.
- loops in the plurality of three-dimensional filament loops are randomly oriented.
- thermoplastic polymer is an extruded thermoplastic polymer.
- the thermoplastic polymer includes a component selected from the group consisting of polyolefin, polystyrene-based thermoplastic elastomer, polyester-based thermoplastic elastomer, polyurethane-based thermoplastic elastomer, and polyamide-based thermoplastic elastomer.
- the thermoplastic polymer includes a first linear low-density polyethylene.
- the thermoplastic polymer includes a second linear low- density polyethylene different than the first linear low-density polyethylene.
- a seat assembly is described.
- the seat assembly includes a frame and the cushion according to any of the above techniques, the cushion supported by the frame.
- a tool is described.
- the tool includes: a die defining a series of apertures arranged to extrude material for the stranded mesh material member for the cushion according to any one of claims 87-99, the series of apertures arranged to define the outer perimeter of the member to define the plastic mesh base (c.g., 360), the first bolster and the second bolster.
- Method 210 includes extruding 212 a first thermoplastic polymer to form a plastic mesh base (e.g., 360) comprising a first plurality of three-dimensional filament loops, the plastic mesh base (e.g., 360) having a first side edge, a second side edge, a front edge, a rear edge, a first face, and a second face; and extruding 214 a second thermoplastic polymer to form a first bolster attached to the plastic mesh base (e.g., 360) at the first edge, the first foamed bolster comprising a second plurality of three-dimensional filament loops, the second thermoplastic polymer different from the first thermoplastic polymer.
- Method 210 includes extruding 216 material to form a second bolster attached to the plastic mesh base (e.g., 360) at the second edge.
- the second bolster comprises a third plurality of three- dimensional filament loops, the third plurality of three-dimensional filament loops composed of the second thermoplastic polymer.
- the second bolster comprises a third plurality of three- dimensional filament loops, the third plurality of three-dimensional filament loops composed of a third thermoplastic polymer different from the first thermoplastic polymer.
- the second bolster comprises a third plurality of three- dimensional filament loops, the third plurality of three-dimensional filament loops composed of a third thermoplastic polymer different from the first and second thermoplastic polymers.
- the second bolster comprises a third plurality of three- dimensional filament loops, the third plurality of three-dimensional filament loops composed of a third thermoplastic polymer different from the first thermoplastic polymer.
- the technique includes a third bolster that comprises a fourth plurality of three-dimensional filament loops, the fourth plurality of three-dimensional filament loops composed of a fourth thermoplastic polymer different from the first thermoplastic polymer.
- a seat assembly 400 is disclosed.
- the seat assembly 400 includes a seat frame 402, one or more seat cushions 404, and a trim cover 406.
- the seat assembly 400 may include further components such as but not limited to a massaging assembly, a ventilation assembly, a heating assembly, and/or a sensor assembly.
- the seat assembly 400 is a seat for a vehicle such as an automobile, motorcycle, aircraft, watercraft, and/or train.
- the one or more cushions 404 include a seat bottom and/or seat back.
- a seat cushion of the seat assembly 400 may be a non-foam, a foam free, a foamless, and/or a nonwoven mesh cushion 408 of intertwined and/or entangled polymeric strands 410, as shown in FIG. 23.
- Portions of the various polymeric strands are entangled with portions of other polymeric strands such that the plurality of polymeric strands serves as a single unit, piece, cushion, pillow, pad, or mat.
- this disclosure will refer to it as a non-foam cushion 408 or foamless cushion 408.
- the polymeric strands are any suitable polymeric material such as a thermoplastic polymer (e.g., polyolefins, polyethylene, polypropylene, polystyrene, polycarbonate, polyurethane, and/or polyvinyl chloride).
- a thermoplastic polymer e.g., polyolefins, polyethylene, polypropylene, polystyrene, polycarbonate, polyurethane, and/or polyvinyl chloride.
- the foamless cushion 412 includes a first portion/section/region/volume/zone 414 having a first hardness and a second portion/section/region/volume/zone 416 having a second hardness that is different than the first hardness, as shown in FIG. 23.
- the hardness is determined with equivalent volumes according to ASTM 3574.
- the first portion may include a first group of intertwined/entangled polymeric strands and the second portion may include a second group of intertwined/entangled polymeric strands.
- this description will refer to it as portions of the cushion however it likewise could be referred to as sections, regions, volumes, zones of the cushion and/or groups of polymer strands.
- the first and second hardnesses may be different by at least 0.5 kPa, or more preferably at least 2 kPa, or even more preferably at least 4 kPa.
- one portion has a hardness of at least 5 kPa, or more preferably at least 7.5 kPa, or even more preferably at least 10 kPa and another portion has a hardness of no more than 5 kPa, or more preferably no more than 4.5 kPa, or even more preferably no more than 4.0 kPa.
- one portion has a hardness of 5 to 15 kPa, or more preferably 7 to 12 kPa, or even more preferably 8 to 10 kPa and another portion may have a hardness of 1 to 5 kPa, or more preferably 2 to 4.5 kPa, or even more preferably 3 to 4 kPa.
- a foamless cushion 412 has a gradient hardness as illustrated by shading in FIG. 25.
- the foamless cushion 412 has a first portion 414 with the lowest hardness (e.g., least shaded portion), a second portion 416 with an intermediate hardness (i.e., hardness between that of the first and third portions 414, 416), and a third portion 418 with the highest hardness (e.g., darkest shaded portion).
- the portions therebetween may continuously increase in hardness as they become further from the first portion 414and closer to the third portion 416such that a hardness gradient exists.
- the first portion 414 is be disposed at a first end 420 and the third portion 418 is disposed at a second end 416.
- the second portion 416 may be centrally located.
- a harder or softer portion may be arrange centrally and the other of the harder or softer portion may be arranged on the periphery.
- the first portion 414 may form the top of a seat bottom such that is arranged to be proximate to an occupant whereas the third portion 418 may be arranged such that it is distal to the occupant. This may provide the occupant with the sensation of immediate softness and/or comfort without sacrificing long-term durability and comfort.
- the different portions of the foamless cushion may provide different degrees of hardness by having different attributes or characteristics.
- the bulk densities of different portions may be different.
- bulk density is determined according to ISO 845. Any portion described above as having a greater hardness may have greater a density.
- the bolster region, as shown in FIG. 24, may have a greater density than the central region.
- the bulk densities may be different by at least 3.0 kg/m 3 , or more preferably at least 7.0 kg/m 3 , or even more preferably at least 10 kg/m 3 .
- the bulk density difference may be 3 to 20 kg/m 3 , or more preferably 5 to 15 kg/m 3 , or even more preferably 6 to 12 kg/m 3 .
- one portion has a bulk density of no more than 60 kg/m 3 , or more preferably no more than 55kg/m 3 , or even more preferably no more than 50 kg/m 3 and a bulk density of at least 30 kg/m 3 , or more preferably at least 35 kg/m 3 , or even more preferably at least 40 kg/m 3 .
- the one portion may have a density of 60 to 30 kg/m 3 , or more preferably 55 to 35 kg/m 3 , or even more preferably 50-40 kg/m 3 and another portion may have a density of + 3.0 kg/m 3 , or more preferably at least 7.0 kg/m 3 , or even more preferably at least 10 kg/m 3 .
- another portion may have a density of no more than 57 kg/m 3 , or more preferably no more than 53 kg/m 3 , or even more preferably no more than 50 kg/m 3 .
- another portion may have a density of at least 33 kg/m 3 , or more preferably at least 37 kg/m 3 , or even more preferably at least 40 kg/m 3 .
- a one portion may have a density of 60 to 33 kg/m 3 , or more preferably 60 to 37 kg/m 3 , or even more preferably 60 to 40 kg/m 3 and another portion may have a bulk density of 57 to 30 kg/m 3 , or more preferably 53 to 30 kg/m 3 , or even more preferably 50 to 30 kg/m 3 .
- each portion has an average strand diameter. The average diameter of a first portion is different than the average diameter of a second portion. The difference may be at least 0.2 mm, or more preferably at least 0.4 mm, or even more preferably 0.6 mm.
- the difference may be 0.1 to 3 mm, or more preferably 0.3 to 1.8 mm, or even more preferably 0.5 to 1.2 mm.
- the average diameter of one portion may be at least 1.1 times that an average diameter of another portion, or more preferably at least 1.5 times, or even more preferably at least 2 times larger than the average diameter of another portion.
- the average diameter of one portion may be 110%, or more preferably 150%, or even more preferably 200% of the average diameter of another portion.
- a portion has an average diameter of at least 1.2 mm, or more preferably at least 1.4 mm, or even more preferably at least 1.6 mm and another portion has an average diameter of no more than 1.2 mm, or more preferably no more than 1.0 mm, or even more preferably no more than 0.8 mm.
- a portion may have an average diameter of 0.05 to 10 mm, or more preferably 0.1 to 5 mm, or even more preferably 0.5 to 1.2 mm and another portion has an average diameter of 0.8 to 15 mm, or more preferably 1.2 to 13 mm, or even more preferably 1.6 to 10 mm.
- a third portion 303 has a bulk density and/or average diameter that is different than the first portion and/or the second portion.
- the bulk density and/or average diameter may be the same or substantially the same (z.e., within manufacturing tolerance, within 1%, 1.5%, 3%, 5%, or 10%) as a first portion.
- the second portion may be disposed between the first and third portions.
- the first portion may have lowest bulk density and/or average diameter, while the third portion has the greatest bulk density and/or average diameter (z.e., the third portion is greater than the second portion and the second portion is greater than the first portion) or vice versa.
- the first, second, and/or third portions may have strands of different shapes such as round, square, triangular, star, or various other shapes.
- the diameter may refer max diameter of a widthwise (as opposed to lengthwise) crosssection of the strand to distinguish the relative size of the various strands.
- a first group of strands may be round and a second group of strands may be polygonal (e.g., rectangular).
- the seat frame 402 may be made of rigid material such as metal, plastic, wood, or a combination thereof.
- the seat frame 402 may support the foamless cushion 404, other seat assemblies (e.g., massage assembly, ventilation assembly, electronic assembly, etc.), and/or an occupant.
- other seat assemblies e.g., massage assembly, ventilation assembly, electronic assembly, etc.
- an aluminum seat frame 402 may be used.
- the trim cover 406 is disposed over the one or more cushions 404 and/or the seat frame 402.
- the trim cover 406 is arranged to contact an occupant.
- the trim cover 406 may be made of leather, faux leather, polyurethane, and/or polyester.
- a die 500 such as a breaker plate may be used to dispense the polymeric resin as polymeric strands.
- the die 500 is an interchangeable component of the dispensing system 600, as shown in FIG. 27, such that different dies can be used to provide cushions having different characteristic and attributes (e.g., shapes, hardnesses, bulk densities, average strand diameters).
- a first die may yield a cushion having a harder bolster region and a softer central seat region, as shown in FIG. 24 and a second die may yield a cushion having a gradient hardness from a first surface to a second surface, as shown in FIG. 25.
- the die 500 includes a solid body 502 which defines a plurality of orifices 504.
- the plurality of orifices 504 may include at least 50 orifices, or more preferably at least 500 orifices, or even more preferably at least 1000 orifices.
- FIG. 29 illustrates a die having at least 1200 orifices.
- FIGS. 30-31 illustrate cross-sectional view of the breaker plate of FIG. 29. As shown, each orifice may be taper from a larger orifice to a smaller orifice which may generate a greater pressure for dispensing the flowable polymeric strand from the die.
- the dispensing system 600 applies pressure such that the polymeric resin 602 is dispensed through the orifices 504 of the die 500. Accordingly, the size, arrangement, distribution, and density of orifices 504 will affect the characteristic and/or attributes of the cushion such as the overall shape, hardness, bulk density, average strand diameter, and strand shape.
- the plurality of orifices 504 includes at least a first group of orifices 506 having a different size, distribution, density and/or shape than a second group of orifices 508.
- a third group of orifices 510 has a different size, distribution, density and/or shape than the first and/or second group of orifices.
- Each group of orifices has an average diameter and orifice density (i.e., a first group of orifices having a first average diameter and first orifice density, a second group of orifices having a second average diameter and second orifice density, and a third group of orifices having a third average diameter and third orifice density).
- the first average diameter may be different than the second and/or third average diameter and/or the first orifice density may be different than the second and/or third average density.
- the first and third average diameter and/or orifice densities are the same or substantially the same (i.e., within manufacturing tolerance, within 1%, 1.5%, 3%, 5%, or 10%).
- the first average diameter may be less than the second average diameter and the second average diameter is less than the third average diameter.
- the first orifice density may be less than the second orifice density and the second orifice density may be less than the third orifice density.
- the first average diameter is at least 1.2 mm, more preferably at least 1.4 mm, or even more preferably at least 1.6 mm.
- the first average diameter may be 0.8 to 10 mm, or more preferably 1 to 5 mm, or even more preferably 1.2 to 3 mm.
- the first orifice density may be at least 11.5 orifices per square inch, or more preferably at least 13 orifices per square inch, or even more preferably at least 15 orifices per square inch.
- the first orifice density may be 10 to 20 orifices per square inch, or more preferably 11 to 18 orifices per square inch, or even more preferably 12 to 16 orifices per square inch.
- the first average diameter may be no more than 1.2 mm, or more preferably no more than 1.0 mm, or even more preferably no more than 0.8 mm.
- the first average diameter may be 0.05 to 1.2 mm, or more preferably 0.3 to 1.0 mm, or even more preferably 0.7 to 0.9 mm.
- the first orifice density may be no more than 11.5 orifices per square inch, or more preferably no more than 10 orifices per square inch, or even more preferably no more than 8 orifices per square inch.
- the first orifice density may be 1 to 11.5 orifices per square inch, or more preferably 3 to 10 orifices per square inch, or even more preferably 5 to 8 orifices per square inch.
- the second average diameter is at least 0.8 mm, more preferably at least 0.9 mm, or even more preferably at least 1.0 mm and no more than 1.6 mm, or more preferably no more than 1.5 mm, or even more preferably no more than 1.4 mm.
- the second average diameter is 0.8 to 1.6 mm, or more preferably 0.9 to 1.5 mm, or even more preferably 1.0 to 1.4 mm.
- the second orifice density is at least 9 orifices per square inch, or more preferably at least 10 orifices per square inch, or even more preferably at least 11 orifices per square inch and no more than 14 orifices per square inch, or more preferably no more than 13 orifices per square inch, or even more preferably 12 orifices per square inch.
- the second orifice density is 9 to 14 orifices per square inch, or more preferably 10 to 13 orifices per square inch, or even more preferably 11 to 12 orifices per square inch.
- the third average diameter is at least 1.2 mm, more preferably at least 1.6 mm, or even more preferably at least 1.8 mm.
- the third average diameter may be 1.2 to 10 mm, or more preferably 1.6 to 8 mm, or even more preferably 1.8 to 5 mm.
- the third orifice density may be at least 11.5 orifices per square inch, or more preferably at least 13 orifices per square inch, or even more preferably at least 15 orifices per square inch.
- the third orifice density may be 10 to 20 orifices per square inch, or more preferably 11 to 18 orifices per square inch, or even more preferably 12 to 16 orifices per square inch.
- the orifices may form one or more gradients relative to their distribution (i.e., orifice density) and/or size (e.g., average diameter).
- the gradient may correspond to the gradients as described above with regards to the cushion.
- orifices proximate a first end of the die 500 may be larger and continuously decrease in size as they become further from the first end and more proximate a second end where the smallest orifices are located.
- the orifices at the periphery may be smaller while the central orifices or orifices in the mid-portion are larger.
- the first group of orifices proximate a first end of the die 500 may be more concentrated or arranged to have a greater orifice density and continuously decrease concentration or orifice density as they become further from the first end and more proximate a second end where the least concentrated orifices or lowest orifice density occurs.
- the orifices at the periphery may less concentrated or have a lower orifice density than orifices at the center or mid-portion.
- the die 500 is arranged in the dispensing system 600.
- dispensing system 600 includes an inlet 601 such as a hopper for receiving polymeric resin 602 such as in a solid pelletized form.
- the polymeric resin 602 is sheared and heated such as by extruder 604 which melts the solid polymeric resin 602 into a flowable form such as a molten polymeric resin 602 prior to dispensing it from the die 500.
- the extruder 604 may be driven by a motor 606 and a transmission 608.
- the extruder 604 includes a screw 612 disposed in a barrel 614.
- the die 500 is disposed and/or arranged at a terminal end of the extruder 604 such that it can easily be removed and replaced by another die.
- the flowable molten polymeric resin 131 is dispensed from the die 500 as strands and flows linearly into and through a first medium 135 such as air and then into a second medium 139 such as water.
- the first and second mediums 135, 139 have different densities such that deflection occur at or proximate the medium interface 137 (i.e., the linear strands change direction).
- the second medium 139 may have a greater density than the first medium 135.
- the second medium 139 is chilled to the below the melting point and/or glass transition temperature of the polymeric resin.
- the second medium 139 may also have a greater heat capacity than the first medium 135.
- the deflection or changes in direction may lead to entanglement and/or the intertwining of the polymeric strands when accompanied by the cooling effect of the second medium 139 the polymeric strands may solidify such that the entangled/intertwining mass is a single piece, component, unit and/or generally holds its shape such as in the form a cushion.
- the entangled/intertwined mass of polymeric strands may exhibit elastic properties similar to a foam and/or fabric.
- the entangled/intertwined mass may be cleaned and/or dried after being removed from the second medium 139.
- the strands may be generally fixed in position relative to one another such that they may become more proximal or distal depending on the pressure exerted upon them but generally don’t change positions relative to one another. Accordingly, portions having a greater bulk density and/or larger size may present a greater overall hardness and portions having a lesser bulk density and/or size may present a lesser overall hardness.
- a method 800 of making a seat cushion or pad is disclosed, as shown in FIG. 28.
- the method 800 includes dispensing a plurality of polymeric strands from a die into and through a medium interface to form a cushion (z.e., step 810), removing the cushion from the second medium (i.e., step 820), and drying the cushion (z'.c., step 830).
- dispensing occurs via an extruder as shown in FIG. 8.
- the extruder is configured to receive a polymeric resin such as a thermoplastic polymeric resin.
- the extruder includes a hopper for receiving the polymer resin.
- pellets or beads of the polymeric resin may be loaded in the hopper.
- the hopper may direct the polymeric resin into a chamber/barrel and a drive such as a screw may be engaged shear the polymeric resin.
- the chamber/barrel and/or portions thereof are heated. The combination of shear and heat renders the solid pelletized polymeric resin into a molten polymeric material that is flowable.
- the chamber/barrel is heated to a temperature that exceeds the melting point of the resin.
- the molten polymeric strands may be dispensed into a first medium such as air.
- the strands are dispensed from a die such as a breaker plate having portions with different orifice densities and/or orifice sizes.
- the breaker plate includes a gradient such as an orifice density gradient and/or an orifice size gradient.
- the breaker plate is an interchangeable component of an extruder such that a first die/breaker plate that is used to make a first plurality of components and exchanged with a second die/breaker plate that is used to make a second plurality of components that are different than the first plurality of components.
- the die 500 may be arranged such that gravity further directs the polymeric strands in a linear motion into the second medium.
- the second medium is denser than the first medium.
- the mediums define a medium interface therebetween.
- the first medium may be a gas and the second medium may be a liquid such as water.
- the difference may result in deflection (e.g., bending) of the polymeric strands at or proximate the medium interface.
- the random deflection of the various polymeric strands results in entanglement of the plurality of polymeric strands.
- the intertwined and entangled polymeric strands also harden as they are cooled by the second medium and transition out of their molten state.
- the hardened intertwined/entangled mass of polymeric strands may form a non-foam/foamless cushion.
- the mass e.g., cushion
- the cushion is removed from the second medium and dried. Given the different characteristics of portions of the die the cushion may have different attributes such as harder and softer regions.
- the different hardnesses are the result of different bulk densities and/or strand diameters.
- a foamless seat cushion is described.
- the foamless seat cushion includes a plurality of intertwined polymeric strands having a first group of intertwined polymeric strands with a first hardness, and a second group of intertwined polymeric strands having a second hardness that is different than the first hardness, wherein the first and second groups of intertwined polymeric strands are connected.
- the first group of intertwined polymeric strands has a first average diameter
- the second group of intertwined polymer strands has a second average diameter that is different than the first average diameter
- the first group of intertwined polymeric strands defines a first bulk density
- the second group of intertwined polymeric strands has a second bulk density that is different than the first density
- the first hardness is less than the second hardness and the first hardness is no more than 5 kPa.
- the second hardness is at least 5 kPa.
- the foamless seat cushion further comprises a third group of intertwined polymeric strands from the plurality of intertwined polymeric strands having a third hardness, the second group of intertwined polymeric strands being disposed between the first and third groups of intertwined polymeric strands such that the first hardness is less than the second hardness and the third hardness is greater than the second hardness.
- the plurality of intertwined polymeric strands from a hardness gradient from a first region of the cushion to a second region of the cushion.
- a vehicle seat assembly (e.g., 400) is described.
- the vehicle set assembly (e.g., 400) comprises a seat frame (e.g., 402) supporting the foamless cushion of any of the preceding techniques.
- a die such as breaker plate (e.g., 500) is described.
- the die e.g., breaker plate 500
- the die includes a solid body defining a plurality of orifices, the plurality of orifices (e.g., 504) having a first group (e.g., 506) of orifices and a second group (e.g., 508) of orifices, the first group (e.g., 506) of orifices being present at a first orifice density and having a first average diameter, the second group (e.g., 508) of orifices being present at a second orifice density and having a second average diameter wherein the first orifice density different than the second orifice density and/or the first average diameter is different than the second average diameter.
- the first orifice density is different than the second orifice density.
- the first average diameter is different than the second average diameter.
- the first orifice density is no more than 11.5 orifices per square inch.
- the first and second average diameters are different by at least 0.4.
- the first and second orifice density is different by at least 3.0 kg/m3.
- a system for dispensing a polymeric resin comprises an extruder with the breaker plate (e.g., 500) of any of the above techniques disposed therein such that during operation the extruder extrudes strands of the polymeric resin through the plurality of orifices (e.g., 504) during operation.
- Method 220 includes dispensing 222 a molten polymeric resin through a die (e.g., 500) defining a plurality of orifices (e.g., 504) to dispense a plurality of polymeric strands into a medium interface defined by a first medium and a second medium such that at least a portion of polymeric strands are deflected, intertwines, and harden to form a non-foam cushion in the second medium.
- a die e.g., 500
- defining a plurality of orifices e.g., 504
- Method 220 includes removing 224 the non-foam cushion from the second medium.
- Method 220 includes drying 226 the non-foam cushion.
- the plurality of orifices includes (i) a first group (e.g., 506) of orifices arranged at a first density and defining a first average diameter and (ii) a second group (e.g., 508) of orifices arranged at a second density and defining a second average diameter, the first density being different than the second density and/or the first average diameter being different than the second average diameter such the non-foam cushion has a first region with a first hardness and a second region with a second hardness that is different than the first hardness.
- the plurality of orifices (e.g., 504) is defined by an interchangeable breaker plate.
- the plurality of orifices (e.g., 504) is arranged to form a size and/or distribution gradient such that the non-foam cushion has a gradient hardness.
- the plurality of orifices includes a third group (e.g., 510) of orifices such that the non-foam cushion has a third region having a third hardness that is greater than the second hardness which is greater than the first hardness, the second region being disposed between the first and third regions.
- the plurality of orifices includes a third group of orifices such that the non-foam cushion has a third region having a third hardness that is different than the second hardness and within 10% of the first hardness, the second region being disposed between the first and third regions.
- a method for producing a vehicle interior component comprising: heating a polymeric material to a molten state, such that it becomes a molten polymer; introducing the molten polymer into a die plate having a first area containing a plurality of first holes therethrough and a second area containing a plurality of second holes therethrough, the first holes together defining a first open space per unit area in the first area and the second holes together defining a second open space per unit area in the second area, and wherein the first open space per unit area is greater than the second open space per unit area; and cooling the molten polymer after it leaves the die plate.
- Clause 8 A vehicle interior component formed by the method of any of the preceding or subsequent clauses.
- a method for producing a vehicle interior component comprising: heating a polymeric material to a molten state, such that it becomes a molten polymer; introducing the molten polymer into a die plate including a first area having an open portion and a closed portion and a second area having an open portion and a closed portion, and wherein a ratio of the open portion of the first area to the first area is greater than a ratio of the open portion of the second area to the second area; and cooling the molten polymer after it leaves the die plate.
- Clause 14 The method of any of the prior or subsequent clauses, wherein the second area includes a location configured to receive an occupant sensor in the cushion blank.
- a die-plate arrangement usable to produce a vehicle interior component comprising: a plate including a first area containing a plurality of first holes therethrough and a second area containing a plurality of second holes therethrough, the first holes together defining a first open portion in the first area and the second holes together defining a second open portion in the second area, and wherein a ratio of the first open portion to the first area is greater than a ratio of the second open portion to the second area.
- a method of manufacturing a product comprising: dispensing, through a tool with an aperture sized to match an overall perimeter of a product, a molten thermoplastic resin, the tool generating a plurality of strands through the tool aperture while maintaining the plurality of strands within the overall perimeter of the product; and buckling the strands by resisting a flow of the plurality of strands, the buckled strands intersecting as a unitary non-woven body in a shape of the overall perimeter of the product.
- Clause 22 The method of any of the preceding or subsequent clauses, further comprising cooling the plurality of strands as a unitary non-woven product.
- Clause 23 The method of any of the preceding or subsequent clauses further comprising: dispensing the molten thermoplastic resin from a plurality of nozzles, the plurality of nozzles, collectively, comprising an area greater than the area of the aperture; and closing a subset of the plurality of nozzles outside the area of the aperture.
- Clause 24 The method of any of the preceding or subsequent clauses, further comprising providing a plate as the tool.
- Clause 26 The method of any of the preceding or subsequent clauses, further comprising providing a mold with the aperture as the tool.
- Clause 27 The method of any of the preceding or subsequent clauses, further comprising providing cooling passages through the mold to cool the unitary non-woven product.
- Clause 37 A system to manufacture a cushion, comprising: a dispenser of molten thermoplastic resin; and the tool of any of the preceding or subsequent clauses oriented relative to the dispenser to receive the molten thermoplastic resin.
- Clause 38 The system of any of the preceding or subsequent clauses, further comprising a fluid chamber to receive the molten thermoplastic resin to resist a flow of the plurality of dispensed strands to buckle the strands to intersect as a unitary non-woven body in a shape of the overall perimeter of the cushion.
- Clause 39 The system of any of the preceding or subsequent clauses, wherein the tool is oriented within the fluid chamber to cool the plurality of dispensed strands as a unitary non-woven cushion.
- Clause 40 The system of any of the preceding or subsequent clauses, wherein cooling passages are formed through the tool to cool the plurality of dispensed strands as the unitary nonwoven cushion.
- a method comprising: dispensing a molten thermoplastic resin as a plurality of strands and at least one film; and resisting a flow of the dispensed plurality of strands, the resisting expanding the plurality of strands by intersecting and bonding at least a subset of the plurality of strands with each other and the at least one film as a unitary body.
- Clause 42 The method of any of the preceding or subsequent clauses, further comprising cooling the plurality of strands and the at least one film as a unitary product.
- Clause 43 The method of any of the preceding or subsequent clauses, further comprising: cooling the plurality of strands and the at least one film with a fluid, wherein the flow of the plurality of strands is resisted by the fluid.
- Clause 44 The method of any of the preceding or subsequent clauses, further comprising cooling the plurality of strands in a fluid chamber.
- Clause 45 The method of any of the preceding or subsequent clauses, further comprising dispensing the at least one film on an exterior surface of the unitary body.
- Clause 46 The method of any of the preceding or subsequent clauses, further comprising dispensing the at least one film between at least two subsets of the plurality of strands.
- Clause 48 The method of any of the preceding or subsequent clauses, wherein dispensing further comprises: dispensing the plurality of strands through a plurality of apertures in a tool; and dispensing the at least one film through at least one slit in the tool. [0362] Clause 49.
- any of the preceding or subsequent clauses further comprising: removing the tool from an extruder; installing a second tool to the extruder; dispensing the molten thermoplastic resin as a second plurality of strands and a second film through the second tool; and resisting a flow of the dispensed second plurality of strands, the resisting expanding the second plurality of strands by intersecting at least a subset of the second plurality of strands with each other and the second film as a second unitary body that is different from the first unitary body.
- Clause 50 The method of any of the preceding or subsequent clauses, further comprising assembling a seat with a cushion formed by the method.
- Clause 51 A product formed by the method of any of the preceding or subsequent clauses.
- a product formed by a method comprising: dispensing a molten thermoplastic resin as a plurality of strands and at least one film; and resisting a flow of the dispensed plurality of strands, the resisting expanding the plurality of strands by intersecting at least a subset of the plurality of strands with each other and the at least one film as a unitary body.
- Clause 53 The product formed by the method of any of the preceding or subsequent clauses, further comprising: forming the at least one film on an exterior surface of the unitary body.
- Clause 54 The product formed by the method of any of the preceding or subsequent clauses, further comprising: forming the at least one film as an impermeable film between at least two subsets of the plurality of strands.
- Clause 55 The product formed by the method of any of the preceding or subsequent clauses, further comprising: forming an aperture through the at least one film.
- Clause 56 A seat assembly manufactured by a method comprising: assembling a seat with a cushion formed by the method of any of the preceding or subsequent clauses.
- Clause 57 The seat assembly manufactured by the method of any of the preceding or subsequent clauses, further comprising: attaching at least one of a seat trim, an actuator, and/or a heat transfer layer to the at least one film.
- Clause 58 A product comprising: an expanded mesh of a plurality of interconnected thermoplastic strands; and at least one thermoplastic film integrally bonded to at least one subset of the plurality of strands as a unitary body.
- Clause 59 The product of any of the preceding or subsequent clauses, wherein the at least one film is oriented on an exterior surface of the unitary body.
- Clause 60 The product of any of the preceding or subsequent clauses, wherein the at least one film is impermeable.
- Clause 61 The product of any of the preceding or subsequent clauses, wherein the at least one film is oriented between at least two subsets of the plurality of strands.
- a seat assembly comprising the product of any of the preceding or subsequent clauses, as a seat cushion.
- Clause 65 A tool comprising a body with a plurality of apertures formed through the body and at least one slit formed through the body to dispense a molten thermoplastic resin through the plurality of apertures and the at least one slit.
- Clause 66 A system comprising: an extruder of molten thermoplastic resin; and the tool of any of the preceding or subsequent clauses mounted to the extruder to dispense the molten thermoplastic resin through the tool as a plurality of strands and at least one film.
- a method for producing a vehicle interior component comprising: heating a polymeric material to a molten state, such that it becomes a molten polymer; introducing the molten polymer into a die plate having a plurality of holes disposed therethrough such that the molten polymer moves through the holes and forms a plurality of molten polymeric filaments; surrounding the molten polymeric filaments with a heating arrangement operable to apply heat to the molten polymeric filaments; and introducing the molten polymeric filaments into a bath to cool the molten polymeric filaments to form a consolidated filament structure.
- Clause 70 The method of any of the preceding or subsequent clauses, wherein the heating arrangement is configured to control an ambient temperature around the molten polymeric filaments to a temperature of 60°C-140°C.
- Clause 72 The method of any of the preceding or subsequent clauses, wherein the molten polymeric filaments include an outer portion disposed toward an outside edge of the die plate, and an inner portion disposed inward from the outer portion, and the heating arrangement is configured to heat the outer portion such that bonding between the molten polymeric filaments of the outer portion is greater than bonding between the molten polymeric filaments of the inner portion.
- Clause 74 The method of any of the preceding or subsequent clauses, wherein the first molten polymer is introduced into the die plate toward an outside edge of the die plate, and the second molten polymer is introduced into the die plate inward from the first molten polymer such that the first molten polymeric filaments at least partially surround the second molten polymeric filaments.
- a method for producing a vehicle interior component comprising: heating a first polymeric material to a molten state to create a first molten polymer; extruding the first molten polymer to form a plurality of first molten polymeric filaments; heating an entire perimeter of the first molten polymeric filaments; and cooling the first molten polymeric filaments in a fluid bath to create a consolidated filament structure.
- Clause 77 The method of any of the preceding or subsequent clauses, wherein the first molten polymer comprises a first material, and the method further comprises extruding a second molten polymer comprising a second material to form a plurality of second molten polymeric filaments.
- Clause 78 The method of any of the preceding or subsequent clauses, wherein the first molten polymer and second molten polymer are extruded such that the first molten polymeric filaments at least partially surround the second molten polymeric filaments.
- Clause 80 The method of any of the preceding or subsequent clauses, wherein heating the entire perimeter of the first molten polymeric filaments comprises heating the first molten polymeric filaments to a temperature of 60°C-140°C.
- Clause 81 The method of any of claims of any of the preceding or subsequent clauses, wherein the entire perimeter of the first molten polymeric filaments is heated such that bonding between the first molten polymeric filaments is greater than bonding between the second molten polymeric filaments.
- a method for producing a vehicle interior component comprising: heating a polymeric material to create a molten polymer; forming a plurality of molten polymeric filaments from the molten polymer by extruding the molten polymer through a die plate; heating an entire perimeter of the molten polymeric filaments with a heating arrangement; and cooling the molten polymeric filaments in a fluid bath to form a consolidated filament structure.
- Clause 86 The method of any of the preceding or subsequent clauses, wherein the first molten polymer is introduced into the die plate toward an outside edge of the die plate, and the second molten polymer is introduced into the die plate inward from the first molten polymer such that the first molten polymeric filaments at least partially surround the second molten polymeric filaments.
- a vehicle seat cushion component comprising: a plastic mesh base, the plastic mesh base comprising a first plurality of three-dimensional filament loops, the first plurality of three-dimensional filament loops composed of a first thermoplastic polymer, the plastic mesh base having a first side edge, a second side edge, a front edge, a rear edge, a first face, and a second face; a first bolster attached to the plastic mesh base at the first edge, the first foamed bolster comprising a second plurality of three-dimensional filament loops, the second plurality of three-dimensional filament loops composed of a second thermoplastic polymer different from the first thermoplastic polymer; and a second bolster attached to the plastic mesh base at the second edge.
- the vehicle seat cushion component of any of the preceding or subsequent clauses, further comprising a third bolster comprises a fourth plurality of three-dimensional filament loops, the fourth plurality of three-dimensional filament loops composed of a fourth thermoplastic polymer different from the first thermoplastic polymer.
- thermoplastic polymer is an extraded thermoplastic polymer
- thermoplastic polymer includes a component selected from the group consisting of polyolefin, polystyrene-based thermoplastic elastomer, polyester-based thermoplastic elastomer, polyurethane- based thermoplastic elastomer, and polyamide-based thermoplastic elastomer.
- thermoplastic polymer includes a first linear low-density polyethylene.
- thermoplastic polymer includes a second linear low-density polyethylene different than the first linear low-density polyethylene.
- a seat assembly comprising: a frame; and the cushion according to any of the preceding or subsequent clauses, the cushion supported by the frame.
- a tool comprising: a die defining a series of apertures arranged to extrude material for the stranded mesh material member for the cushion according to any of the preceding or subsequent clauses, the series of apertures arranged to define the outer perimeter of the member to define the plastic mesh base, the first bolster and the second bolster.
- a method comprising: extruding a first thermoplastic polymer to form a plastic mesh base comprising a first plurality of three-dimensional fdament loops, the plastic mesh base having a first side edge, a second side edge, a front edge, a rear edge, a first face, and a second face; and extruding a second a thermoplastic polymer to form a first bolster attached to the plastic mesh base at the first edge, the first foamed bolster comprising a second plurality of three- dimensional filament loops, the second thermoplastic polymer different from the first thermoplastic polymer; and extruding material to form a second bolster attached to the plastic mesh base at the second edge.
- Clause 104 The method of any of the preceding or subsequent clauses, wherein the second bolster comprises a third plurality of three-dimensional filament loops, the third plurality of three-dimensional filament loops composed of the second thermoplastic polymer.
- Clause 105 The method of any of the preceding or subsequent clauses, wherein the second bolster comprises a third plurality of three-dimensional filament loops, the third plurality of three-dimensional filament loops composed of a third thermoplastic polymer different from the first thermoplastic polymer.
- Clause 106 The method of any of the preceding or subsequent clauses, wherein the second bolster comprises a third plurality of three-dimensional filament loops, the third plurality of three-dimensional filament loops composed of a third thermoplastic polymer different from the first and second thermoplastic polymers.
- Clause 108 The method of any of the preceding or subsequent clauses, further comprising a third bolster comprises a fourth plurality of three-dimensional fdament loops, the fourth plurality of three-dimensional filament loops composed of a fourth thermoplastic polymer different from the first thermoplastic polymer.
- a foamless seat cushion comprising: a plurality of intertwined polymeric strands having a first group of intertwined polymeric strands with a first hardness, and a second group of intertwined polymeric strands having a second hardness that is different than the first hardness, wherein the first and second groups of intertwined polymeric strands are connected.
- a vehicle seat assembly comprising a seat frame supporting the foamless cushion of any of the preceding or subsequent clauses.
- a breaker plate comprising: a solid body defining a plurality of orifices, the plurality of orifices having a first group of orifices and a second group of orifices, the first group of orifices being present at a first orifice density and having a first average diameter, the second group of orifices being present at a second orifice density and having a second average diameter wherein the first orifice density different than the second orifice density and/or the first average diameter is different than the second average diameter.
- Clause 118 The breaker plate of any of the preceding or subsequent clauses, wherein the first orifice density is different than the second orifice density.
- Clause 123 A system for dispensing a polymeric resin comprising an extruder with the breaker plate of any of the preceding or subsequent clauses disposed therein such that during operation the extruder extrudes strands of the polymeric resin through the plurality of orifices during operation.
- a method of making a seat pad comprising: dispensing a molten polymeric resin through a die defining a plurality of orifices to dispense a plurality of polymeric strands into a medium interface defined by a first medium and a second medium such that at least a portion of polymeric strands are deflected, intertwines, and harden to form a non-foam cushion in the second medium; removing the non-foam cushion from the second medium; and drying the nonfoam cushion, wherein the plurality of orifices includes (i) a first group of orifices arranged at a first density and defining a first average diameter and (ii) a second group of orifices arranged at a second density and defining a second average diameter, the first density being different than the second density and/or the first average diameter being different than the second average diameter such the non-foam cushion has a first region with a first hardness and a second
- Clause 126 The method of any of the preceding or subsequent clauses, wherein the plurality of orifices is arranged to form a size and/or distribution gradient such that the non-foam cushion has a gradient hardness.
- Clause 127 The method of any of the preceding or subsequent clauses, wherein the plurality of orifices includes a third group of orifices such that the non-foam cushion has a third region having a third hardness that is greater than the second hardness which is greater than the first hardness, the second region being disposed between the first and third regions.
- Clause 128 The method of any of the preceding or subsequent clauses, wherein the plurality of orifices includes a third group of orifices such that the non-foam cushion has a third region having a third hardness that is different than the second hardness and within 10% of the first hardness, the second region being disposed between the first and third regions.
- a cushion such as for a vehicular seat comprising a (e.g., nonwoven) mesh body.
- the mesh body includes a plurality of interconnected polymeric filaments, (i) comprising a first subset of polymeric filaments and a second subset of polymeric filaments that is different (e.g., a different composition, hardness, density, shape, size and/or thickness) than the first subset of polymeric filaments; and/or (ii) at least a portion of the interconnected polymeric filaments is bonded to a polymeric film.
- Clause 139 The cushion of any of the preceding or subsequent clauses, wherein the mesh body is non-woven.
- Clause 140 The cushion of any of the preceding or subsequent clauses, wherein the mesh body includes a base portion and an additional bolster portion.
- Clause 149 The cushion of any of the preceding or subsequent clauses, wherein the second bolster is opposite the first bolster.
- Clause 150 The cushion of any of the preceding or subsequent clauses, wherein the second bolster comprises a third subset of polymeric filaments of the plurality of interconnected polymeric filaments and the third subset of polymeric filaments is different (e.g., a different composition, shape, size) than the first and/or second subset of polymeric filaments.
- Clause 156 The cushion of any of the preceding or subsequent clauses, wherein the fourth subset of polymeric filaments comprises a fourth polymeric material that is different than the first, second, and/or third polymeric material.
- Clause 158 The cushion of any of the preceding or subsequent clauses, wherein the fourth bolster is attached to the base portion at a fourth edge.
- Clause 159 The cushion of any of the preceding or subsequent clauses, wherein the fourth bolster is opposite the third bolster.
- Clause 175. The cushion of any of the preceding or subsequent clauses, wherein the polymeric film is arranged between a first subset of polymeric filaments and a second subset of polymeric filaments.
- Clause 180 The cushion of any of the preceding or subsequent clauses, wherein the plurality of interconnected polymeric filaments comprises a polymer selected from the group consisting of a polyolefin, a polyethylene, a polystyrene, a polyester, a polyurethane, and a polyamide.
- a seat assembly comprising a frame supporting the cushion of any of the preceding or subsequent clauses.
- Clause 186 The seat assembly of any of the preceding or subsequent clauses, wherein the seat assembly is a vehicular seat assembly.
- a die tool comprising a solid body (e.g., metal body) defining a first section (e.g., section for forming central seat cushion portion) defining a first plurality of orifices (e.g., nozzles/first subset of holes) such that it defines a first open space (e.g., collective open area of holes) and a first closed portion and a second section (e.g., section for forming bolsters) defining one or more orifices (e.g., nozzles/second subset of holes) such that it defines a second open space (e.g., collective open area of holes) and a second closed portion wherein (i) the first open space and the first closed portion is different (i.e., different orifice density/shape/size/different perimeter) than the second open space and the second closed portion, (ii) the orifices define a shape of a final product
- Clause 190 The die tool of any of the preceding or subsequent clauses, wherein the first section (e.g., forming central cushion portion) has a different orifice density (e.g., orifice per unit area) than the second section (e.g., bolsters).
- first section e.g., forming central cushion portion
- second section e.g., bolsters
- Clause 191 The die tool of any of the preceding or subsequent clauses, wherein the first plurality of orifices (e.g., first subset) is a different size (e.g., average diameter) than the one or more orifices (e.g., second subset).
- Clause 192 The die tool of any of the preceding or subsequent clauses, wherein the first plurality of orifices (e.g., first subset) of the first section has a different average diameter than the one or more orifices (e.g., second subset) of the second section.
- Clause 21 1. The die tool of any of the preceding or subsequent clauses, wherein the through aperture is shaped with curvature to form a unitary non-woven cushion with curvature.
- a dispensing system comprising a dispenser (e.g., extruder) with the die tool of any of the preceding or subsequent clauses disposed thereon such that during operation the dispenser dispenses a molten thermoplastic resin through the orifices of the die tool.
- a dispenser e.g., extruder
- Clause 216 The dispensing system of any of the preceding or subsequent clauses, further comprising a fluid chamber (e.g., cooling bath) to receive the molten thermoplastic filaments and resist a flow of the molten thermoplastic filaments which buckles the filaments such that they intersect and/or bond together to form a unitary non-woven body in a shape of the overall perimeter of the cushion.
- a fluid chamber e.g., cooling bath
- a vehicle interior component comprising a plurality of interconnected polymeric filaments dispensed through the die tool of any of the preceding or subsequent clauses.
- a method such as for producing a vehicular seat cushion comprising dispensing (e.g., extruding) a molten polymeric resin through a die assembly (e.g., die plate, template, and/or funnel) having a first region defining a first plurality of apertures (e.g., first subset) to dispense molten polymeric filaments and a second region defining one or more additional apertures (e.g., second subset) to dispense additional molten polymeric member (e.g., additional filaments and/or a film) that is different than the molten polymeric filaments, wherein the first region defines a first ratio of a first blocked area (e.g., solid portion of die plate) to a first open area (e.g., collective area of holes) that is different than a second ratio of a second blocked area to a second open area of the second region, and cooling the molten polymeric filaments and the additional molten polymeric member to form
- a die assembly
- Clause 224 The method of any of the preceding or subsequent clauses, wherein the additional molten polymeric member is additional polymeric filaments having a different shape, size, density, and/or composition.
- Clause 225 The method of any of the preceding or subsequent clauses, wherein the molten polymeric material is extruded through the die assembly.
- Clause 228 The method of any of the preceding or subsequent clauses, wherein the final product is an interior vehicle component.
- Clause 230 The method of any of the preceding or subsequent clauses, wherein additional molten polymeric member is a polymeric film.
- Clause 235 The method of any of the preceding or subsequent clauses, wherein the first medium is a gas (e.g., air) and the second medium is a liquid (e.g., water).
- a gas e.g., air
- the second medium is a liquid (e.g., water).
- Clause 236 The method of any of the preceding or subsequent clauses, wherein the first medium is air, and the second medium is water.
- Clause 240 The method of any of the preceding or subsequent clauses, wherein a first thermoplastic polymer is dispensed through the orifice of the first region such that the first portion is a plastic mesh base of interconnected polymeric filaments and a second thermoplastic polymer is dispensed through the one or more orifice of the second region such that the second portion is a first plastic mesh bolster of interconnected polymeric filaments attached to the plastic mesh base, the second thermoplastic polymer being different than the first thermoplastic polymer.
- Clause 245. The method of any of the preceding or subsequent clauses, further comprising heating a polymeric material to a molten state such that when it is received by the die assembly and dispensed through the die assembly it forms the molten polymeric filaments and/or the additional molten polymeric member.
- Clause 246 The method of any of the preceding or subsequent clauses, further comprising surrounding the molten polymeric filaments with a heating arrangement operable to apply heat to the molten polymeric filaments.
- Clause 247 The method of any of the preceding or subsequent clauses, further comprising introducing the molten polymeric filament and/or the additional molten polymeric member into a cooling bath to form the mesh body of interconnected polymer filament.
- Clause 248 The method of any of the preceding or subsequent clauses, wherein the second medium (e.g., water) is disposed in the cooling (e.g., water) bath.
- Clause 260 The method of any of the preceding or subsequent clauses, further comprising heating an entire perimeter of the molten polymeric filaments.
- Clause 265. The method of any of the preceding or subsequent clauses, wherein the second portion is disposed between the first and third portions.
- Clause 266 The method of any of the preceding or subsequent clauses, wherein the third portion has a hardness that is different than the second hardness and within 10% of the first hardness.
- Clause 268 The method of any of the preceding or subsequent clauses, further comprising dispensing the film on an exterior surface of the mesh body.
- Clause 270 The method of any of the preceding or subsequent clauses, further comprising dispensing the film between at least two subsets of the interconnected polymeric filaments.
- Clause 273 The method of any of the preceding or subsequent clauses, further comprising removing the dispensing assembly or a portion thereof and installing a second dispensing assembly or portion thereof.
- Clause 274 The method of any of the preceding or subsequent clauses, further comprising dispensing a different mesh body through the second dispensing assembly or portion thereof.
- Clause 276 The method of any of the preceding or subsequent clauses, wherein the film is an impermeable film.
- Clause 277 The method of any of the preceding or subsequent clauses, further comprising attaching at least one of a seat trim, an actuator, and/or a heat transfer layer to the film.
- Clause 280 The method of any of the preceding or subsequent clauses, wherein a heating arrangement is attached to each side of the die assembly.
- Clause 285. The method of any of the preceding or subsequent clauses, wherein a first polymeric material is dispensed through the first region of the die assembly and a second polymeric material is dispensed through the second region of the die assembly, the second polymeric material (e.g., polyethylene) being different than the first polymeric material (e.g., polypropylene, polystyrene, polycarbonate, and/or polyvinyl chloride).
- the second polymeric material e.g., polyethylene
- the first polymeric material e.g., polypropylene, polystyrene, polycarbonate, and/or polyvinyl chloride
- Clause 286 The method of any of the preceding or subsequent clauses, wherein second polymeric material is introduced into the die assembly toward an outside edge of the die assembly and the first polymeric material is introduced into the die assembly inward from the second polymeric material such that the additional molten polymeric member at least partially surrounds the first polymeric filaments.
- Clause 288 The method of any of the preceding or subsequent clauses, wherein the third polymeric material is different than the first and second polymeric material and the first and second polymeric materials are different from each other.
- Clause 289. The method of any of the preceding or subsequent clauses, wherein the first plurality of apertures collectively has a greater area than the one or more additional apertures.
- Clause 290. The method of any of the preceding or subsequent clauses, wherein the first plurality of apertures forms a plurality of nozzles, and the method further comprises closing a plurality of nozzles or a subset thereof outside the one or more additional apertures.
- a product such as a vehicular seat cushion is formed by the method of any of the preceding or subsequent clauses.
- a system such as for producing a vehicular non-foam seat cushion comprising a shaping assembly (c.g., die, template, funnel) comprising a die plate, the die plate having a first region with a plurality of apertures and a second region with one or more additional apertures that are different than the plurality of apertures, and an extruder to extrude one or more polymeric materials through the shaping assembly to form a mesh cushion body.
- a shaping assembly c.g., die, template, funnel
- the die plate having a first region with a plurality of apertures and a second region with one or more additional apertures that are different than the plurality of apertures, and an extruder to extrude one or more polymeric materials through the shaping assembly to form a mesh cushion body.
- Clause 300 The system of any of the preceding or subsequent clauses, wherein (i) the first region of the die plate defines a first closed portion and a first open space, and the second region defines a second closed portion and a second open space such that the first closed portion is different than the second closed portion and/or the first open space is different than the second open space, (ii) the first region defines a perimeter in the shape of a final product, (iii) the one or more additional apertures comprises a slit for dispensing a polymeric film, (iv) a first aperture density of the first region is different than a second aperture density of the second region, and/or (v) the size of the plurality of apertures is different than the size of the one or more additional apertures.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Nonwoven Fabrics (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/741,639 US12454111B2 (en) | 2022-05-11 | 2022-05-11 | Tool to manufacture a cushion |
| US202263353728P | 2022-06-20 | 2022-06-20 | |
| US202263356526P | 2022-06-29 | 2022-06-29 | |
| US202263356539P | 2022-06-29 | 2022-06-29 | |
| US202263357222P | 2022-06-30 | 2022-06-30 | |
| US202263357163P | 2022-06-30 | 2022-06-30 | |
| PCT/US2023/021869 WO2023220261A1 (en) | 2022-05-11 | 2023-05-11 | Method and apparatus for producing a cushion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4522553A1 true EP4522553A1 (en) | 2025-03-19 |
| EP4522553A4 EP4522553A4 (en) | 2025-12-24 |
Family
ID=88730887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23804257.6A Pending EP4522553A4 (en) | 2022-05-11 | 2023-05-11 | METHOD AND DEVICE FOR MANUFACTURING A CUSHION |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP4522553A4 (en) |
| JP (1) | JP2025515735A (en) |
| KR (1) | KR20250003778A (en) |
| CN (1) | CN119562929A (en) |
| GB (1) | GB2635615A (en) |
| WO (1) | WO2023220261A1 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12319183B2 (en) | 2021-03-31 | 2025-06-03 | Lear Corporation | Seat support |
| US12269384B2 (en) | 2021-03-31 | 2025-04-08 | Lear Corporation | Seat support |
| US11807143B2 (en) | 2021-12-02 | 2023-11-07 | Lear Corporation | Vehicle seating system and method for producing same |
| US12325168B2 (en) | 2021-12-20 | 2025-06-10 | Lear Corporation | System and method of making a mesh cushion |
| US12479143B2 (en) | 2021-12-20 | 2025-11-25 | Lear Corporation | System and method of making a mesh cushion |
| US12384094B2 (en) | 2022-03-08 | 2025-08-12 | Lear Corporation | Method for producing a vehicle interior component |
| US12454111B2 (en) | 2022-05-11 | 2025-10-28 | Lear Corporation | Tool to manufacture a cushion |
| US12509343B2 (en) | 2023-02-28 | 2025-12-30 | Lear Corporation | Automated trench manufacturing and assembly for attaching trim covers to a cushion assembly |
| US12325624B2 (en) | 2023-03-06 | 2025-06-10 | Lear Corporation | Seat assembly, cushion, and tool and method of forming |
| US12286044B2 (en) | 2023-05-12 | 2025-04-29 | Lear Corporation | Method and apparatus for producing a vehicle interior component |
| DK202470201A1 (en) * | 2023-12-13 | 2025-07-01 | Lear Corp | Seat cushion with stiffener strands |
| DK182118B1 (en) * | 2023-12-15 | 2025-08-25 | Lear Corp | A tractor conveyor and a method for forming and transporting a filament mesh structure |
| DK202470196A1 (en) * | 2023-12-19 | 2025-07-03 | Lear Corp | Method of making an extruded mesh body for a vehicle seat and the article made thereby |
| US20250196737A1 (en) * | 2023-12-19 | 2025-06-19 | Lear Corporation | Method of making an extruded mesh body for a vehicle seat and the article made thereby |
| DE102024137668A1 (en) * | 2023-12-20 | 2025-06-26 | Lear Corporation | Tool with integrated fluid lines for forming a cushion arrangement |
| DK182031B1 (en) * | 2023-12-22 | 2025-06-06 | Lear Corp | An assembly |
| EP4644174A1 (en) * | 2024-05-02 | 2025-11-05 | Lear Corporation | Seat cushion and method of assembly |
| US20250340159A1 (en) * | 2024-05-03 | 2025-11-06 | Lear Corporation | Seat assembly and method of assembly |
| DK182247B1 (en) * | 2024-05-07 | 2026-01-13 | Lear Corp | METHOD FOR MANUFACTURING A PRODUCT |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4876135A (en) * | 1986-11-24 | 1989-10-24 | Mcintosh Blair | Floor mat with disposable absorbent pad |
| JP3686692B2 (en) * | 1994-08-23 | 2005-08-24 | 日本発条株式会社 | Cushion body manufacturing method |
| BR9609225A (en) * | 1995-05-25 | 1999-06-15 | Minnesota Mining & Mfg | Multicomponent thermoplastic filament bicomponent thermoplastic filaments filament structure mat abrasive article process of obtaining multicomponent filament |
| DE10005664A1 (en) * | 1999-02-12 | 2000-08-31 | Barmag Barmer Maschf | Melt spinning assembly has larger spinneret drillings for the outer filaments which shroud the inner filaments in the cooling station but with a constant flow throughput of the molten polymer |
| JP2000248455A (en) * | 1999-02-25 | 2000-09-12 | Nhk Spring Co Ltd | Cushion body, manufacturing method and manufacturing apparatus |
| US9174404B2 (en) * | 2000-03-15 | 2015-11-03 | C-Eng Co., Ltd. | Method for manufacturing three-dimensional netted structure |
| ES2312865T3 (en) * | 2003-08-26 | 2009-03-01 | Ein Co., Ltd. Technical Center | MATERIAL FOR CUSHION FORMED OF RESIN MOLDED WITH ELASTIC STRUCTURE, MANUFACTURING PROCEDURE FOR CUSHION MATERIAL AND MOLD USED FOR THE MANUFACTURING PROCEDURE. |
| US7316557B2 (en) * | 2004-05-08 | 2008-01-08 | Good Earth Tools, Inc. | Die for extruding material |
| KR101928730B1 (en) * | 2011-05-18 | 2019-03-12 | 씨엔 컴퍼니 리미티드 | Three-dimensional net-like structure, manufacturing method of three-dimensional net-like structure, and manufacturing apparatus of three-dimensional net-like structure |
| JP5165809B1 (en) * | 2012-09-10 | 2013-03-21 | 株式会社シーエンジ | Three-dimensional network structure manufacturing apparatus and three-dimensional network structure manufacturing method |
| WO2015154244A1 (en) * | 2014-04-09 | 2015-10-15 | 耀亿工业股份有限公司 | Three-dimensional elastic cushion processing using plurality of yarns |
| KR101732798B1 (en) * | 2015-08-07 | 2017-05-08 | 김진길 | Cooling device for mold |
| WO2018098803A1 (en) * | 2016-12-02 | 2018-06-07 | 3M创新有限公司 | Moisture-absorbent composite nonwoven fabric and article thereof |
| JP7126680B2 (en) * | 2018-04-26 | 2022-08-29 | 株式会社エコ・ワールド | Knitted Resin Structure Shaping Machine, Knitted Resin Structure Manufacturing Apparatus, and Knitted Resin Structure Manufacturing Method |
-
2023
- 2023-05-11 WO PCT/US2023/021869 patent/WO2023220261A1/en not_active Ceased
- 2023-05-11 CN CN202380052978.XA patent/CN119562929A/en active Pending
- 2023-05-11 EP EP23804257.6A patent/EP4522553A4/en active Pending
- 2023-05-11 KR KR1020247037505A patent/KR20250003778A/en active Pending
- 2023-05-11 JP JP2024566332A patent/JP2025515735A/en active Pending
- 2023-05-11 GB GB2417376.7A patent/GB2635615A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023220261A1 (en) | 2023-11-16 |
| EP4522553A4 (en) | 2025-12-24 |
| CN119562929A (en) | 2025-03-04 |
| JP2025515735A (en) | 2025-05-20 |
| GB2635615A (en) | 2025-05-21 |
| KR20250003778A (en) | 2025-01-07 |
| GB202417376D0 (en) | 2025-01-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2023220261A1 (en) | Method and apparatus for producing a cushion | |
| US20250121573A1 (en) | Method and apparatus for producing a vehicle interior component | |
| CN119497685A (en) | Net structure and manufacturing method | |
| DK181948B1 (en) | Seat support comprising a plurality of layers or regions of a plastic mesh, a seat assembly, a tool and method of forming the seat support | |
| US20250346165A1 (en) | Cushion and a method of manufacture | |
| US20250303647A1 (en) | Method and apparatus for producing a cushion | |
| US20250338964A1 (en) | Seat cushion and method of assembly | |
| DK202570106A1 (en) | Seat assembly, cushion, and tool and method of forming | |
| US20250376096A1 (en) | Extruded plastic mesh, seat assembly, cushion and/or method of forming | |
| EP4431267A1 (en) | Receptacle assembly for a fastener in filament mesh structure | |
| EP4566787A2 (en) | Cushion, manufacturing tool, and a method of manufacture | |
| US20260048689A1 (en) | Cushion assembly | |
| US20250121755A1 (en) | Cushion, manufacturing apparatus, and a method of manufacture | |
| WO2024144851A1 (en) | Cushion assembly | |
| DK202570069A1 (en) | Molded seat cushion | |
| DK181722B8 (en) | METHOD FOR MANUFACTURING A VEHICLE INTERIOR COMPONENT AND VEHICLE INTERIOR COMPONENT, PRODUCT AND SEAT ASSEMBLY MANUFACTURED ACCORDING TO THE METHOD | |
| US20240417239A1 (en) | Cushion and system and method of manufacture | |
| DK202370590A1 (en) | Cushion, manufacturing tool, and a method of manufacture | |
| DK202370425A1 (en) | Cushion assembly | |
| DK202570120A1 (en) | Cushion and system and method of manufacture | |
| DK202470199A1 (en) | Tool with integrated fluid lines to form a cushion assembly | |
| GB2629896A (en) | Three-dimensional mesh structures and method of assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20241029 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R079 Free format text: PREVIOUS MAIN CLASS: B68G0007020000 Ipc: B60N0002000000 |
|
| A4 | Supplementary search report drawn up and despatched |
Effective date: 20251121 |
|
| RIC1 | Information provided on ipc code assigned before grant |
Ipc: B60N 2/00 20060101AFI20251117BHEP Ipc: B60N 2/70 20060101ALI20251117BHEP Ipc: B68G 7/02 20060101ALI20251117BHEP Ipc: A47C 27/12 20060101ALI20251117BHEP Ipc: D04H 3/037 20120101ALI20251117BHEP Ipc: D04H 3/07 20120101ALI20251117BHEP Ipc: B29C 48/345 20190101ALI20251117BHEP Ipc: B29D 99/00 20100101ALI20251117BHEP Ipc: B29C 43/34 20060101ALI20251117BHEP Ipc: D04H 3/153 20120101ALI20251117BHEP Ipc: D04H 3/16 20060101ALI20251117BHEP Ipc: B29C 43/00 20060101ALN20251117BHEP Ipc: B29K 23/00 20060101ALN20251117BHEP |
|
| P01 | Opt-out of the competence of the unified patent court (upc) registered |
Free format text: CASE NUMBER: UPC_APP_0005996_4522553/2026 Effective date: 20260218 |