US2878153A - Method of making mattresses, cushions, upholstery, heat and sound insulating coverings and the like - Google Patents

Method of making mattresses, cushions, upholstery, heat and sound insulating coverings and the like Download PDF

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Publication number
US2878153A
US2878153A US58935256A US2878153A US 2878153 A US2878153 A US 2878153A US 58935256 A US58935256 A US 58935256A US 2878153 A US2878153 A US 2878153A
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Prior art keywords
upholstery
plastic
pores
faces
face
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Hacklander Karl Hermann
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Agricola Reg Trust
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Agricola Reg Trust
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/142—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities
    • A47C27/146—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities on the outside surface of the mattress or cushion
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/142—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities
    • A47C27/144—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities inside the mattress or cushion
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/56—After-treatment of articles, e.g. for altering the shape
    • B29C44/5627—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/436—Joining sheets for making articles comprising cushioning or padding materials, the weld being performed through the cushioning material, e.g. car seats
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/727—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being porous, e.g. foam
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B29C66/83513—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums cooperating jaws mounted on rollers, cylinders or drums and moving in a closed path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B68—SADDLERY; UPHOLSTERY
    • B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
    • B68G13/00—Upholstered panels
    • B68G13/04—Upholstered panels with indented pattern formed by bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B68—SADDLERY; UPHOLSTERY
    • B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
    • B68G7/00—Making upholstery
    • B68G7/02—Making upholstery from waddings, fleeces, mats, or the like
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/07—Binding and molding cellular particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/28—Stretching filaments in gas or steam
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S297/00—Chairs and seats
    • Y10S297/01—Foam
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1039—Surface deformation only of sandwich or lamina [e.g., embossed panels]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1043—Subsequent to assembly
    • Y10T156/1044—Subsequent to assembly of parallel stacked sheets only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249961—With gradual property change within a component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249981—Plural void-containing components

Definitions

  • This invention relates to mattresses, cushions, upholstery, heat and sound insulating coverings and the like.
  • the invention is concerned with the use of the resilient heat and sound insulating and absorbing properties of that class of exible plastics which is resilient due to the presence throughout the material of pores, generally known as resilient expanded plastic.
  • resilient expanded plastic is expanded polyurethane, sold under the name Moltopren
  • Such material may be made in a variety of textures, from highly porous and very springy to very soft and having little porosity, as well as in the form of flakes, granules, chips and shreds which may be used for the filling of upholstery.
  • holstery and such like constructed in part at least of resilient expanded plastic characterised in that in the absence of a load, the material adjacent the intended areaof contact with the load is under tension in a direction transversely of the direction of the load, while material remote from said area is under compression in a direction transversely ot' the direction of the load.
  • the outer layers 4 of the sandwich may be formedof resilient expanded plastic while the inner layer 7 of the sandwich maybe of rubberised hair or other well known suitable resilient uphostering 'materialwhich will withstand the compressing forces exerted by the stretching of the outer layers during the compression of the cushion.
  • the said material may be provided with a number o f perforations extending through the in ner layer' 8 as shown in Figure 7 which are closed at Atheir ends either by the outer layers of the sandwich orby the seat structure and which thus form closed voids in thearticle.
  • a construction will give considerable resilifence where the ⁇ load is light while the resilience will progressively decrease with increase of the load.4
  • the cushion may consist of a single layer of resilient ,expanded plastic having imparted to it during the manufacturing process tensionalforces at ⁇ and near'the surfaces and compressional forcesaroundvthe mid plane, the surfaces being brought into closev juxtaposition by welding; sewing or other means of fixing around the periphery so that said forces are produced and exist in the cushion until such time as a load is applied to the same.
  • the nature of the cushion may vary through its cross section for example by forming a sandwich so that the material adjacent the surfaces is chosen to resist tensional forces while the material between is chosen to resist compressional forces.
  • a pattern may be embossed upon the surface lof the cushion or the like by projections upon the compressing plate or a further plate provided for this purpose as shown in Figure 13.
  • anchor-points 9 may be provided throughout the surfaces as shown in Figure 14 so that adequate stresses are incorporated in the structure and the tendency for the material to flow under the load imposed thereon is adequately resisted.
  • These anchor-points may be formed 'at regular or irregular distances apart from one another so as to produce an interesting pattern upon the mattress.
  • anchorage may be provided within the area of the surfaces by straight or curved lines either in addition to the anchor-points or alternative thereto, for example to form straight ribs from side to side or from end to end of the mattress as in a quilt or in a lattice pattern as shown in Figures 14 and 15.
  • the mattress, cushion, upholstery and the like may be constructed of a single sheet-like layer or three sheetlike layers to form a sandwich as above referred to, or an odd number of layers where the structure is required to be handled independently of any rigid structure to which it may be temporarily or permanently attached, whereby the forces within the material are symmetrical about a mid-plane, but where the structure is to be fixed to a rigid backing, for example the back or seat of a chair, an even number of layers may be provided, for example two, in which the outer layer retains the tensional stresses while the inner layer retains the compressional stresses, the upholstery being prevented from rolling up by direct or indirect attachment to the rigid backing.
  • the structure may be constructed of a single thin layer of material which normally would be symmetrical after welding and there fore have tensional stresses at and near the surfaces and compressional stresses between and then be attached around its edge to a at rigid surface 14 such as plywood in which the action of attachment will increase the tensional stresses at the outer surface as shown by the arrows and transfer the compressional stresses from the middle of the structure to the surface adjacent the backing.
  • a at rigid surface 14 such as plywood in which the action of attachment will increase the tensional stresses at the outer surface as shown by the arrows and transfer the compressional stresses from the middle of the structure to the surface adjacent the backing.
  • Such treatment of the structure then converts the upholstery from a symmetrical arrangement to a nonsymmetrical arrangement.
  • Such a structure also is within the scope of the invention.
  • weld may be made that much wider and so produce a ange around the article as shown' in Figure 17 or two separate welds may be made the one adjacent the other for the same purpose.
  • a sandwich may be formed and the outer surfaces of material be attached to means for stretching it in its own plane as shown by the arrows in Figure 18 without compressing between parallel surfaces and before the Welding or sewing is carried out around the periphery.
  • the welding may be then effected by means of a smaller heated hand wheel which may be caused to follow a curved path to a particular design and at the samer time or subsequently anchor-points or anchor-lines may be introduced independently by hand as and where required to join the front and back surfaces together. It can therefore be seen that the invention is not limited to the method of compression between parallel surfaces although this method is found to be most effective as the work can be carried out more rapidly by this means.
  • the surfaces between which the sandwich or single layer is compressed may be curved or shaped and consequently the method of compression during the welding process is not limited to flat parallel plates.
  • the compressing surfaces may be suitably shaped so that the finished product is of the desired curvature.
  • the method and product in accordance with the, invention is particularly applicable to use with upholstery covering large surfaces such as aeroplane seats, divans, and the like, while the curved or cylindrical parts required may be formed during the forming of the main load carrying surfaces of the seat and back as shown in Figure 20, the whole structure being attached to a at backing either along the lines of the welds or by adhesive with the whole of the back.
  • Sheets of material formed in accordance with the invention are particularly useful for lining walls, ceilings, etc. for heat insulating and sound insulating and absorbing purposes and can be constructed by a continuous process in'which pressure is applied to the single sheet or the sandwich of material by a roller or a system of. rollers 17 and 18 as shown in Figure 21 while the welds are applied simultaneously in a similar manner by theelectrodes 12.
  • Such a material may bacon-L.
  • a decorative or wear-resisting fabric 15 may be placed on the surface of the single sheet or sandwich as shown in Figure 22 during the forming process and, if of a thermoplastic nature, becomes attached to the final mattress, cushion or upholstery along the lines of the welds 16 and becomes incorporated in the iinal product, and due to the compressing .process is held stretched between the welds by the resilient action of the layer or layers when released from the pressure.
  • the material be of the kind in which the vpores are interconnected so that the material may breathe and condensation be prevented from forming, but when such use is not made of thestructures the material in which the pores are not interconnected can also be used satisfactorily.
  • Small cushions or pads constructed in accordance with the invention may be employed as cleaning pads for motor vehicles andthe like in which a hose is ,fixed into a recess in the material and is welded closely around the same, so that water issuing from the hose emerges by way of the pores in the material over the surface of the pad. Also an earphone or a small loud-speaker may be inserted in a cushion before it is welded, such a cushion being of particular use in hospitals and such institutions.
  • fabric membranes .e. g. a net extensible in all directions,v may be incorporated in the sandwich to resist the overall stretching of the-mattress or upholstery, particularly in such situations where the structure is attached around its edges and is not provided with an overall backing and other variations in the forming of the structurre may be carried out without departing from the scope of the invention.
  • a method of forming resilient upholstery consisting at least in part of thermoplastic organic plastic expanded by having pores therein and having two opposite faces, comprising the steps of compressing resilient expanded plastic over at least a substantial part of the area of the upholstery to close up the pores therein and reduce the thickness, applying heat over relatively small portions of the compressed area to render them plastic and remove the pores therefrom, allowing the heated portions to cool and solidify and releasing the compression to allow the pores of the main body of the upholstery to open and the main body to return to substantially its original thickness, whereby the plastic adjacent at least one of the opposite faces of the upholstery is stressed by being under tension in a direction parallel with said face or faces while the plastic remote from said face or faces is stressed by being compressed parallel with said face or faces.
  • a method of forming resilient upholstery consisting at least in part of thermoplastic organic plastic expanded by having pores therein and having edge portions of unexpanded plastic and two opposite faces, comprising the steps of compressing resilient expanded plastic over at least a substantial p-art of the area of the upholstery to close up the pores therein and reduce the thickness, applying heat over relatively small portions of the compressed area including at least those portions of the plastic which will form the edge portions of the upholstery to render them plastic and remove the pores therefrom, allowing the heated portions to cool and solidify land releasing the compression to allow the pores of the main body of the upholstery to open and the main body to return to substantially its original thickness, whereby the plastic adjacent at least one of the opposite faces of the upholstery is stressed by being under 6 tension in a direction parallel with said face or vfaces" while the plastic remote from said face or faces is stressed by being compressed parallel with said face or faces.
  • a method of forming resilient upholstery consisting at least in part of thermoplastic organic plastic expanded by having pores therein and having Yedge portions of unexpanded plastic and two opposite faces, cornprising the steps of compressing resilient expanded plastic over at least a substantial part of the area of 4 the upholstery to close up the pores therein and reduce the thickness, applying heat over relatively small portions of the compressed area including at least those lportions of the plastic which will form the edge portions of the upholstery to render them plastic and remove the pores therefrom, allowing the heated portions to cool land solidify, releasing the compression to allow the pores of the main body of the upholstery to open land the main body to return .to substantially its original thickness, whereby the plastic adjacent at least one of the opposite faces of the upholstery is stressed by being under tension in a direction parallel with said face or faces while the plastic remote from said face or faces is stressed by being compressed parallel with said face or faces, and trimming away surplus plastic from outside the boundary dened by said edge portions.
  • a method of forming resilient upholstery consisting at least in part of thermoplastic organic plastic expanded by having pores therein and having edge portions of unexpanded plastic and two opposite faces, comprising the steps of compressing resilient expanded plastic over at least a substantial part of the area of the upholstery to close up the pores therein and reduce the thickness, applying heat over relatively small portions of the compressed area comprising those portions of the plastic which will form the edge portions of the upholstery and anchor lines within the main body of the upholstery to render them plastic and remove the pores therefrom, allowing the heated portions to cool and solidify and releasing the compression to allow the pores of the main body of the upholstery to open and the main body to return to substantially its original thickness, whereby the plastic adjacent at least one of the opposite faces of the upholstery is stressed by being under tension in a direction parallel with said face or faces while the plastic remote from said face or faces is stressed by being compressed parallel with said face or faces.
  • a method of forming resilient upholstery consisting in part of thermoplastic organic plastic expanded by having pores therein and having two opposite faces comprising the steps of compressing resilient expanded plastic in the form of a mass of shreds and granules of plastic sandwiched between two or more sheets of plastic forming the said faces, over at least a substantial part of the area of the upholstery to close up the pores theref in and reduce the thickness, applying heat over relatively Vsmall portions of vthe compressed area to render them plastic and remove the pores therefrom, allowing the heated portions to cool and solidify and releasingthe compression to allow the pores of the main body of the upholstery to open and the main body ⁇ to return to sub-l stantially ⁇ its original thickness, whereby the plastic adjacentat least one of the opposite faces of the upholstery is stressed by being under tension in a direction parallel withsaid ⁇ face or faces while the plastic remote from said face or ⁇ faces is stressedby being compressed paral lelwith said face or faces.
  • a method of forming resilient upholstery consisting at least in part of thermoplastic organic plastic expanded by having pores therein and having'two opposite faces, ⁇ comprising the steps of compressing expanded plastic in the form of two outer sheets of expanded plastic having one degree of resilience and a sheet of expanded plastic having a different resilience sandwiched therebetween over at least a substantial part of the area of the upholstery to close up the pores therein and reduce the thickness, applying heat over relatively small portions of the compressed area to render them plastic and remove the pores therefrom, allowing the heated portions to:cool and vsolidify and releasing the compression to allow-the pores of the main body of the upholstery to open and the main body to return to substantially its original thickness, whereby the plastic adjacent at least oneof the opposite faces of the upholstery is stressed by being under ltension in a direction parallel with said face or faces while the plastic remote from said face or faces is stressed ⁇ by being compressed parallel with said face or faces.
  • A- method of forming resilient upholstery consist- ⁇ ing at least in part of polyurethene expanded by having pores therein and having two opposite faces comprising the steps of compressing expanded polyurethene over at least a substantial part of the area of the upholstery to close up the pores therein and reduce the thickness, applying heat over relatively small portions of the com pressed area to render them plastic and remove the pores therefrom, allowing the heated portions to cool and solidify and releasing the compression to allow the pores of the main body of the upholstery to open and the main body to return to substantially its original thickness, whereby the polyurethene adjacent at least one of the opposite faces of the upholstery is stressed by being under Atensionv in a direction parallel with said face or faces while the polyurethene remote from said face or faces is stressed by being compressed parallel with said face or faces.

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  • Mechanical Engineering (AREA)
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US58935256 1955-02-03 1956-02-02 Method of making mattresses, cushions, upholstery, heat and sound insulating coverings and the like Expired - Lifetime US2878153A (en)

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US2962746A (en) * 1958-10-29 1960-12-06 Pittsburgh Plate Glass Co Paint applicator
US2994110A (en) * 1957-05-10 1961-08-01 Mobay Chemical Corp Surfacing process for isocyanate foam and product
US2996733A (en) * 1958-12-17 1961-08-22 Sheller Mfg Corp Formed pad
US2999332A (en) * 1958-12-04 1961-09-12 Art Ind Inc Table place mat
US3012926A (en) * 1957-10-17 1961-12-12 Arvin Ind Inc Method of making quilted padded articles
US3020186A (en) * 1959-05-21 1962-02-06 Lawrence Leonard Laminating method and means for manufacturing synthetic resinous foam pads
US3025200A (en) * 1957-08-09 1962-03-13 Scott Paper Co Celliform structure and method of making same
US3025206A (en) * 1956-09-12 1962-03-13 William M Scholl Process of making foot cushioning devices
US3026233A (en) * 1959-01-07 1962-03-20 Scholl Mfg Co Inc Electronic heat sealing polyurethane foam
US3026574A (en) * 1957-07-30 1962-03-27 Techniform Inc Process for molding a foamable shell onto a sponge base
US3047888A (en) * 1960-12-05 1962-08-07 George O Shecter Cushioning structure
US3050432A (en) * 1956-10-27 1962-08-21 Bayer Ag Process for compressing cellular polyurethane plastic
US3057766A (en) * 1957-09-23 1962-10-09 Reeves Bros Inc Method and apparatus for forming laminated structure of adhered materials
US3063448A (en) * 1958-10-21 1962-11-13 William M Scholl Surgical pad and method of making the same
US3064279A (en) * 1960-09-27 1962-11-20 Finkle Bernard Pillow construction
US3088860A (en) * 1959-06-24 1963-05-07 William M Scholl Method of making a surgical pad
US3104192A (en) * 1955-10-13 1963-09-17 Agricola Reg Trust Method of forming a smooth surface on expanded plastic
US3110042A (en) * 1962-01-15 1963-11-12 Gen Tire & Rubber Co Mattress
US3123656A (en) * 1964-03-03 Method for finish shaping foamed plastic
US3133853A (en) * 1958-09-08 1964-05-19 Du Pont Resilient composite polyurethane structures
US3165355A (en) * 1963-07-30 1965-01-12 Jr Lloyd Hitchcock Universal-fit acceleration protective device
US3166619A (en) * 1962-05-25 1965-01-19 Forrest E Coyle Method for making a transducer
US3166775A (en) * 1963-01-24 1965-01-26 Cushman Wilhela Cushion type mop with disposable cover
US3170250A (en) * 1962-06-22 1965-02-23 William M Scholl Foot cushioning device
US3170974A (en) * 1962-06-06 1965-02-23 Sun Chemical Corp Process for embossing foamed thermoplastic sheets
US3170178A (en) * 1962-06-22 1965-02-23 William M Scholl Method of making a foot cushioning insole
US3171567A (en) * 1962-01-11 1965-03-02 Sperry Rand Corp Pad gripping device for hand-held appliance
US3188665A (en) * 1964-08-31 1965-06-15 Suyder Paper Corp Cushion structure
US3196030A (en) * 1961-12-29 1965-07-20 Congoleum Nairn Inc Decorative foam surface covering and process therefor
US3196869A (en) * 1962-06-13 1965-07-27 William M Scholl Buttress pad and method of making the same
US3210781A (en) * 1962-01-30 1965-10-12 Harold Van B Pollock Mattress
US3213071A (en) * 1959-11-16 1965-10-19 Phillips Petroleum Co Foamed olefin polymer process
US3232806A (en) * 1961-05-19 1966-02-01 Stanley W Widmer Structural building component and method of making the same
US3242510A (en) * 1961-11-20 1966-03-29 Allen Ind Cushion or pad assembly
US3243484A (en) * 1963-06-24 1966-03-29 Koppers Co Inc Method for increasing the strength of sandwich materials having foamed polymeric cores
US3244573A (en) * 1962-05-21 1966-04-05 Scholl Mfg Co Inc Heat and tear sealing dies
US3253591A (en) * 1963-09-30 1966-05-31 William M Scholl Foot cushions carried by the foot
US3253601A (en) * 1963-09-06 1966-05-31 William M Scholl Conforming foot cushioning device for footwear
US3253600A (en) * 1963-09-06 1966-05-31 William M Scholl Orthopedic inlay for footwear
US3255286A (en) * 1961-10-20 1966-06-07 Prod Synthetiques Appliques Production of shaped articles from cellular thermoplastic materials
US3263010A (en) * 1962-10-31 1966-07-26 Allied Chem Non-cellular unitary structures and preparation thereof
US3278955A (en) * 1964-06-11 1966-10-18 Dayco Corp Foam rubber article
US3284275A (en) * 1961-05-09 1966-11-08 Dennison Mfg Co Expansible polyurethane foam
US3285795A (en) * 1962-06-18 1966-11-15 Stefan M Stein Heat curable plastic sheets and laminates
US3305421A (en) * 1962-05-21 1967-02-21 Scholl Mfg Co Inc Method of using heat and tear sealing dies
US3306967A (en) * 1963-08-12 1967-02-28 Scholl Mfg Co Inc Molding of resinous foams
US3320346A (en) * 1961-07-17 1967-05-16 Jantzen Inc Method of producing fabric laminated articles
US3328505A (en) * 1962-08-07 1967-06-27 West Point Pepperell Inc Method of making soft and drapeable foamed plastic sheeting
US3335207A (en) * 1963-10-11 1967-08-08 Owens Illinois Inc Method and apparatus for forming foamed low density sheet plastic
US3337895A (en) * 1964-10-28 1967-08-29 Pfizer & Co C Laminated powder puff
US3342922A (en) * 1963-10-09 1967-09-19 Dow Chemical Co Method of preparing re-expandable foam
US3346686A (en) * 1964-05-27 1967-10-10 Grace W R & Co Method of uniting foamed plastic sheets and thermoforming the same
US3354578A (en) * 1964-07-24 1967-11-28 Mattel Inc Figure toy having compressed elastomeric stuffing and bonded cover
US3360423A (en) * 1961-09-21 1967-12-26 Gen Tire & Rubber Co Flexible structural foam sandwich construction
US3370117A (en) * 1965-09-16 1968-02-20 Reeves Bros Inc Crushed polyurethane foam and method of making same
US3374785A (en) * 1965-10-11 1968-03-26 Medical Specialties Inc Cervical collar
US3378432A (en) * 1966-05-20 1968-04-16 West Point Pepperell Inc Limp and drapeable polyurethane foam sheeting and method of making it
US3389043A (en) * 1963-07-05 1968-06-18 Chrysler Corp Upholstery mat
US3443007A (en) * 1967-02-21 1969-05-06 Mobay Chemical Corp Process for producing a smooth impervious skin on the surface of a resilient sheet of foamed plastic
US3445917A (en) * 1965-09-14 1969-05-27 Mattel Inc Method of manufacturing stuffed toys
US3461844A (en) * 1967-07-20 1969-08-19 Minnesota Mining & Mfg Laminate animal stall flooring
US3499813A (en) * 1964-11-17 1970-03-10 Scholl Werke Gmbh Fa Method of making surgical pads
US3503838A (en) * 1965-04-22 1970-03-31 Mobay Chemical Corp Laminated foam plastic article and method for making the same
US3507727A (en) * 1966-02-01 1970-04-21 Mobay Chemical Corp Method of making and seaming covered foam cushioning
US3528866A (en) * 1967-01-09 1970-09-15 Arvin Ind Inc Method of making laminated padded article
US3607601A (en) * 1968-08-05 1971-09-21 Phillips Petroleum Co Foamed shock-absorbent structure
US3650867A (en) * 1969-06-25 1972-03-21 Collins & Aikman Corp Method of producing laminated textile fabrics with improved dimensional stability
US3668287A (en) * 1968-09-25 1972-06-06 Us Navy Method of constructing foamed in place building containing heating wire
US3691569A (en) * 1968-12-28 1972-09-19 Takeo Ikada Cushion
US3709966A (en) * 1969-01-30 1973-01-09 Olin Corp Compression of layers of polyurethane foam containing at least alternate layers of partially cured foam
US3783156A (en) * 1966-12-19 1974-01-01 Nishizawa Shoji Co Ltd Method of making beaded article
US3953560A (en) * 1973-09-05 1976-04-27 Polycrate (Proprietary) Limited Method of injection molding structural foam folding slat structures
US3962507A (en) * 1972-12-07 1976-06-08 Armstrong Cork Company Vinyl structure having an embossed top layer and a foam base
US3971839A (en) * 1971-12-06 1976-07-27 Taylor Don A Particle filled self-conformable cushion and method of making same
US4022856A (en) * 1975-01-06 1977-05-10 The General Tire & Rubber Company Anchorable urethane foams
US4029839A (en) * 1974-12-06 1977-06-14 Klaus Lesti Sound and thermal insulating construction element
US4037013A (en) * 1975-11-07 1977-07-19 Dayco Corporation Carpet underlay comprising foamed scrap particles
US4039363A (en) * 1976-09-13 1977-08-02 Robertson James H Method of making floating seat cushion
US4054706A (en) * 1975-05-28 1977-10-18 Continental Combining Corporation Lining material for foot wear and a method for manufacturing same
US4076246A (en) * 1974-12-18 1978-02-28 Meyer Leonard S Target particularly for archery
US4147825A (en) * 1975-09-15 1979-04-03 Anselm Talalay Polymeric foam cushioning article and method for making the same
EP0013269A1 (de) * 1978-12-21 1980-07-09 Koflach Sportgeräte Gesellschaft m.b.H Verfahren zur Herstellung eines gepolsterten Schaftes bzw. Schuhuppers und Vorrichtung zur Durchführung dieses Verfahrens
US4241189A (en) * 1977-02-02 1980-12-23 General Foam Products Limited Wear-resistant flexible sheet material and a method for its manufacture
US4240998A (en) * 1979-04-05 1980-12-23 Seymour Lichter Process for the production of composite foamed material
US4241190A (en) * 1979-04-05 1980-12-23 Seymour Lichter Composite foamed material
US4247513A (en) * 1979-03-14 1981-01-27 Liu Chin Lien Method of making laminated sole
FR2461586A1 (fr) * 1979-07-20 1981-02-06 Sonatex Materiau en forme de nappe matelassee et procede de fabrication de tel materiau
US4260575A (en) * 1979-11-05 1981-04-07 Koss Corporation Method for molding ear cushions
FR2475026A1 (fr) * 1980-01-23 1981-08-07 Ikeda Bussan Co Materiaux de matelassage et procede pour les fabriquer
US4300543A (en) * 1978-05-12 1981-11-17 Rhee Jhoon G Protective cast device
US4381618A (en) * 1981-01-19 1983-05-03 The Quaker Oats Company Toy flat article construction set
EP0117952A2 (en) * 1982-12-27 1984-09-12 Mobil Oil Corporation Containers having heat-sealed juncture regions
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US4595551A (en) * 1984-09-21 1986-06-17 Monsanto Company Thermoforming of styrenic foam laminates
US4657609A (en) * 1984-09-13 1987-04-14 Koflach Sportgerate Gesellschaft Process for producing cushionings for ski boots, in particular for the production of inner boots of ski boots
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US4819288A (en) * 1986-08-06 1989-04-11 National Research Development Corporation Cushions
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US5054142A (en) * 1988-03-02 1991-10-08 Owens Thomas P Contoured body cushion
US5066531A (en) * 1989-09-05 1991-11-19 Ametek Variable thickness foam plank
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US5185380A (en) * 1990-06-28 1993-02-09 Stankiewicz Gmbh Recycling of thermosetting polyurethane soft foam
US5382153A (en) * 1990-08-25 1995-01-17 Hoechst Aktiengesellschaft Apparatus for producing filling material for three-dimensionally shaped textile structures
US5397517A (en) * 1993-08-13 1995-03-14 Jay Medical Inc. Method of making a seat cushion base
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Cited By (114)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123656A (en) * 1964-03-03 Method for finish shaping foamed plastic
US3104192A (en) * 1955-10-13 1963-09-17 Agricola Reg Trust Method of forming a smooth surface on expanded plastic
US3025206A (en) * 1956-09-12 1962-03-13 William M Scholl Process of making foot cushioning devices
US3050432A (en) * 1956-10-27 1962-08-21 Bayer Ag Process for compressing cellular polyurethane plastic
US2994110A (en) * 1957-05-10 1961-08-01 Mobay Chemical Corp Surfacing process for isocyanate foam and product
US3026574A (en) * 1957-07-30 1962-03-27 Techniform Inc Process for molding a foamable shell onto a sponge base
US3025200A (en) * 1957-08-09 1962-03-13 Scott Paper Co Celliform structure and method of making same
US3057766A (en) * 1957-09-23 1962-10-09 Reeves Bros Inc Method and apparatus for forming laminated structure of adhered materials
US3012926A (en) * 1957-10-17 1961-12-12 Arvin Ind Inc Method of making quilted padded articles
US3133853A (en) * 1958-09-08 1964-05-19 Du Pont Resilient composite polyurethane structures
US3063448A (en) * 1958-10-21 1962-11-13 William M Scholl Surgical pad and method of making the same
US2962746A (en) * 1958-10-29 1960-12-06 Pittsburgh Plate Glass Co Paint applicator
US2999332A (en) * 1958-12-04 1961-09-12 Art Ind Inc Table place mat
US2996733A (en) * 1958-12-17 1961-08-22 Sheller Mfg Corp Formed pad
US3026233A (en) * 1959-01-07 1962-03-20 Scholl Mfg Co Inc Electronic heat sealing polyurethane foam
US3020186A (en) * 1959-05-21 1962-02-06 Lawrence Leonard Laminating method and means for manufacturing synthetic resinous foam pads
US3088860A (en) * 1959-06-24 1963-05-07 William M Scholl Method of making a surgical pad
US3213071A (en) * 1959-11-16 1965-10-19 Phillips Petroleum Co Foamed olefin polymer process
US3064279A (en) * 1960-09-27 1962-11-20 Finkle Bernard Pillow construction
US3047888A (en) * 1960-12-05 1962-08-07 George O Shecter Cushioning structure
US3284275A (en) * 1961-05-09 1966-11-08 Dennison Mfg Co Expansible polyurethane foam
US3232806A (en) * 1961-05-19 1966-02-01 Stanley W Widmer Structural building component and method of making the same
US3320346A (en) * 1961-07-17 1967-05-16 Jantzen Inc Method of producing fabric laminated articles
US3360423A (en) * 1961-09-21 1967-12-26 Gen Tire & Rubber Co Flexible structural foam sandwich construction
US3255286A (en) * 1961-10-20 1966-06-07 Prod Synthetiques Appliques Production of shaped articles from cellular thermoplastic materials
US3242510A (en) * 1961-11-20 1966-03-29 Allen Ind Cushion or pad assembly
US3196030A (en) * 1961-12-29 1965-07-20 Congoleum Nairn Inc Decorative foam surface covering and process therefor
US3171567A (en) * 1962-01-11 1965-03-02 Sperry Rand Corp Pad gripping device for hand-held appliance
US3110042A (en) * 1962-01-15 1963-11-12 Gen Tire & Rubber Co Mattress
US3210781A (en) * 1962-01-30 1965-10-12 Harold Van B Pollock Mattress
US3305421A (en) * 1962-05-21 1967-02-21 Scholl Mfg Co Inc Method of using heat and tear sealing dies
US3244573A (en) * 1962-05-21 1966-04-05 Scholl Mfg Co Inc Heat and tear sealing dies
US3166619A (en) * 1962-05-25 1965-01-19 Forrest E Coyle Method for making a transducer
US3170974A (en) * 1962-06-06 1965-02-23 Sun Chemical Corp Process for embossing foamed thermoplastic sheets
US3196869A (en) * 1962-06-13 1965-07-27 William M Scholl Buttress pad and method of making the same
US3285795A (en) * 1962-06-18 1966-11-15 Stefan M Stein Heat curable plastic sheets and laminates
US3170250A (en) * 1962-06-22 1965-02-23 William M Scholl Foot cushioning device
US3170178A (en) * 1962-06-22 1965-02-23 William M Scholl Method of making a foot cushioning insole
US3328505A (en) * 1962-08-07 1967-06-27 West Point Pepperell Inc Method of making soft and drapeable foamed plastic sheeting
US3263010A (en) * 1962-10-31 1966-07-26 Allied Chem Non-cellular unitary structures and preparation thereof
US3166775A (en) * 1963-01-24 1965-01-26 Cushman Wilhela Cushion type mop with disposable cover
US3243484A (en) * 1963-06-24 1966-03-29 Koppers Co Inc Method for increasing the strength of sandwich materials having foamed polymeric cores
US3389043A (en) * 1963-07-05 1968-06-18 Chrysler Corp Upholstery mat
US3165355A (en) * 1963-07-30 1965-01-12 Jr Lloyd Hitchcock Universal-fit acceleration protective device
US3306967A (en) * 1963-08-12 1967-02-28 Scholl Mfg Co Inc Molding of resinous foams
US3253601A (en) * 1963-09-06 1966-05-31 William M Scholl Conforming foot cushioning device for footwear
US3253600A (en) * 1963-09-06 1966-05-31 William M Scholl Orthopedic inlay for footwear
US3253591A (en) * 1963-09-30 1966-05-31 William M Scholl Foot cushions carried by the foot
US3342922A (en) * 1963-10-09 1967-09-19 Dow Chemical Co Method of preparing re-expandable foam
US3335207A (en) * 1963-10-11 1967-08-08 Owens Illinois Inc Method and apparatus for forming foamed low density sheet plastic
US3346686A (en) * 1964-05-27 1967-10-10 Grace W R & Co Method of uniting foamed plastic sheets and thermoforming the same
US3278955A (en) * 1964-06-11 1966-10-18 Dayco Corp Foam rubber article
US3354578A (en) * 1964-07-24 1967-11-28 Mattel Inc Figure toy having compressed elastomeric stuffing and bonded cover
US3188665A (en) * 1964-08-31 1965-06-15 Suyder Paper Corp Cushion structure
US3337895A (en) * 1964-10-28 1967-08-29 Pfizer & Co C Laminated powder puff
US3499813A (en) * 1964-11-17 1970-03-10 Scholl Werke Gmbh Fa Method of making surgical pads
US3503838A (en) * 1965-04-22 1970-03-31 Mobay Chemical Corp Laminated foam plastic article and method for making the same
US3445917A (en) * 1965-09-14 1969-05-27 Mattel Inc Method of manufacturing stuffed toys
US3370117A (en) * 1965-09-16 1968-02-20 Reeves Bros Inc Crushed polyurethane foam and method of making same
US3374785A (en) * 1965-10-11 1968-03-26 Medical Specialties Inc Cervical collar
US3507727A (en) * 1966-02-01 1970-04-21 Mobay Chemical Corp Method of making and seaming covered foam cushioning
US3378432A (en) * 1966-05-20 1968-04-16 West Point Pepperell Inc Limp and drapeable polyurethane foam sheeting and method of making it
US3783156A (en) * 1966-12-19 1974-01-01 Nishizawa Shoji Co Ltd Method of making beaded article
US3528866A (en) * 1967-01-09 1970-09-15 Arvin Ind Inc Method of making laminated padded article
US3443007A (en) * 1967-02-21 1969-05-06 Mobay Chemical Corp Process for producing a smooth impervious skin on the surface of a resilient sheet of foamed plastic
US3461844A (en) * 1967-07-20 1969-08-19 Minnesota Mining & Mfg Laminate animal stall flooring
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