RADIO FREQUENCY WELDING TECHNIQUES TO EMBOSS GRAPHICS ON A TICKING MATERIAL

Abstract

A system comprising a patient support surface including a core, a ticking covering the core, a RF welding equipment, and a die are used to emboss a layer of an embossing substrate to a surface of the ticking to form a 3-dimensional structure determined by the die. The ticking has a first surface that faces away from the core and a second surface that faces towards the core, and the 3-dimensional structure is formed on the second surface.

Claims

1. A system comprising: a patient support surface including a core, a ticking covering the core, wherein the ticking has a first surface and a second surface, and wherein the first surface faces away from the core and the second surface faces towards the core, and a radio frequency (RF) welding equipment and a die used to emboss a layer of an embossing substrate applied to the second surface of the ticking, wherein the ticking forms a 3-dimensional structure determined by the die.

2. The system of claim 1, wherein the core is a mattress with a plurality of inflatable zones.

3. The system of claim 1, wherein the first surface of the ticking is polyurethane and the second surface of the ticking is nylon.

4. The system of claim 1, wherein the embossing substrate is a thermoplastic coated substrate or a thermoplastic coated substrate.

5. The system of claim 1, wherein the first surface comprises polyurethane and the second surface comprises nylon, and wherein the 3-dimensional structure includes the layer of the embossing substrate, a layer of nylon, and a layer of polyurethane.

6. The system of claim 1, wherein the die comprises a graphic design, and the 3-dimensional structure formed by the die comprises the same graphic design.

7. The system of claim 1, wherein the 3-dimensional structure includes an additional layer of color or foil.

8. The system of claim 7, wherein the additional layer of color comprises a thermoplastic coated substrate or a thermoplastic coated substrate.

9. A covering for a patient support surface, the covering comprising: a first surface and a second surface facing opposite to the first surface, a layer of an embossing substrate applied on the second surface of the covering, and a 3-dimensional structure embossed on the covering, wherein the 3-dimensional structure comprises the layer of the embossing substrate.

10. The covering of claim 9, wherein the covering covers a core of the patient support apparatus.

11. The covering of claim 9, wherein the first surface of the covering is polyurethane and the second surface of the covering is nylon.

12. The covering of claim 9, wherein the embossing substrate is a thermoplastic coated substrate or a thermoplastic coated substrate.

13. The covering of claim 9, wherein the first surface comprises polyurethane and the second surface comprises nylon, and wherein the 3-dimensional structure includes the layer of the embossing substrate, a layer of nylon, and a layer of polyurethane.

14. The covering of claim 9, wherein a RF welding equipment and a die are used to emboss the 3-dimensional structure on the covering.

15. The covering of claim 9, wherein the 3-dimensional structure includes an additional layer of color or foil on the first surface.

16. A method of applying a 3-dimensional structure to a ticking comprising the steps of: selecting a radio frequency (RF) welding equipment, selecting a die compatible with the RF welding equipment, positing a first side of the ticking that will not be in contact with a core of a patient support surface and a second side of the ticking that will be in contact with the core of the patient support surface, applying a layer of an embossing substrate on the second side of the ticking, pressing the die on the embossing substrate on the first side of the ticking, and activating the RF welding equipment manually or automatically.

17. The method of claim 16, wherein the embossing substrate is a thermoplastic coated substrate or a thermoplastic coated substrate.

18. The method of claim 16, wherein the method comprises forming a 3-dimensional structure determined by the die.

19. The method of claim 18, wherein the method further comprises applying a layer of color or foil to the 3-dimensional structure.

20. The system of claim 19, wherein the additional layer of color on the first surface comprises a thermoplastic coated substrate or a thermoplastic coated substrate.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The detailed description particularly refers to the accompanying figures in which:

[0018] FIG. 1 is a diagrammatic illustration of a core covered by a ticking according to the present disclosure;

[0019] FIG. 2 is a diagrammatic illustration of two layers comprising the ticking;

[0020] FIG. 3 is perspective view of a patient support apparatus including a mattress covered by the ticking;

[0021] FIG. 4 is a diagrammatic illustration of the ticking with an embossed graphic on a top side;

[0022] FIG. 5 is a diagrammatic illustration of the ticking with an embossed graphic on a side surface;

[0023] FIG. 6 is a diagrammatic illustration of a die used to create the embossed graphic shown in FIG. 4;

[0024] FIG. 7 is a diagrammatic illustration of a RF equipment used to emboss graphics on the ticking; and

[0025] FIG. 8 is step by step illustration of a method implemented to create the embossed graphics on the ticking.

DETAILED DESCRIPTION

[0026] An illustration of a ticking 10 is shown in FIG. 1. The ticking 10 is used to cover a core 20 and can comprise one or more layers of material. In one embodiment, as shown in FIG. 2, the ticking comprises of a lower nylon layer 12 and an upper polyurethane layer 14. As shown in FIG. 3, the core 20 covered by the ticking 10 can be a mattress 20 on a patient support apparatus 30. The patient support apparatus 30 is embodied as a hospital bed. The bed 30 of FIG. 2 comprises a frame 32 which supports a mattress 20. The mattress 20 is covered by the ticking 10.

[0027] The ticking 10 can be used to cover a core 20 that may include inflatables pressure zones, or other fillings such as foam. The core 20 may comprise various core materials such as that disclosed in U.S. Pat. No. 11,135,110 titled PATIENT SUPPORT APPARATUS, which is incorporated herein for the disclosure of examples of core structures that can be covered by the ticking 10. The core can be used on patient support apparatuses including but not limited to beds, chairs, wheelchairs, operating tables, and changing tables.

[0028] The ticking 10 can include one or more embossed graphics or labels. Graphics or labels embossed on the ticking 10 can be used by the user or caregiver to identify ticking 10 and/or core 20 characteristics. As shown in FIGS. 3-5, the ticking 10 can include embossed graphics 24, 26 on one or more surfaces. The embossed graphics 24, 26 are 3-dimensional structures that are added to the ticking 10 to communicate information to a patient or a caregiver. The embossed graphics 24, 26 can indicate product designation, caregiver instructions, specific locations (e.g., location of X-ray sleeve), etc.

[0029] FIG. 6 shows the die 50 used to create the embossed graphic 24 illustrated in FIG. 4. FIG. 7 illustrates a typical RF equipment 52 that is used to create the embossed graphics 24, 26. The embossed graphics 24, 26 are applied by using a radio frequency (RF) welding technique that uses RF welding equipment 52 and a die 50. The structure of the embossed graphics 24, 26 is determined by the die 50. The RF welding equipment 52 creates the embossed graphics 24, 26 by applying radio frequency energy to the region of the ticking 10 when the embossed graphics 24, 26 are created. A high frequency electromagnetic field is applied between two metal bars 54, 56 which are also used to apply pressure to the region of the ticking 10. The radio frequency causes the molecules to oscillate creating friction. The friction gives rise to heat that results in the graphics being embossed onto the ticking 10.

[0030] FIG. 8 is step by step illustration of a method implemented to create the embossed graphics 24, 26 on the ticking 10. The method of creating the embossed graphics includes identifying the correct RF welding equipment 52 in step 62 and identifying the appropriate die 50 in step 64. A side of the ticking 10 that is to be embossed is identified in step 66. A layer of embossing substrate is added to side of the ticking 10 that is to be embossed in step 68. The die 50 is pressed to the side of the ticking 10 that is to be embossed in step 70. The RF welding equipment 52 is activated to process the die 50 onto the ticking 10 in step 72. The RF welding equipment 52 can be operated manually or automatically. The embossing side of the ticking 10 may be the backside of the ticking 10 that is in contact with the core 20 or the topside of the ticking 10 that is away from the core 20.

[0031] The embossing substrate may be a thermoplastic or thermoplastic coated substrate. The embossing substrate may be ethylene, polypropylene, polyester, or polyurethane. The embossing substrate may be clear or may comprise a color. In one embodiment, the embossing substrate may have a thickness of about 0.15. In other embodiments, the thickness of the embossing substrate may be more than or less than about 0.15.

[0032] In some embodiments, an additional layer of color or foil may be added to the embossed graphics 24, 26. Referring back to FIG. 8, the method may include determining if a layer of foil is required in step 74. A foil may be added as a metal layer. If a layer of foil is determined to be required in step 74, step 76 is executed and a layer of foil is applied prior to pressing the die 50 in step 70. Alternatively, the foil layer may be added after the embossed graphics are added to the ticking 10 in step 72. The foil layer may be embossed on the graphic 24, 26 by heat. The foil layer may be applied to the side of the ticking 10 that is not in contact with the core 20 and/or is visible to the caregiver.

[0033] The method may further include determining if a layer of color is required in step 78. The layer of color can comprise a thermoplastic or thermoplastic coated substrate. If a layer of color is determined to be required in step 78, step 80 is executed and a layer of color is applied prior to pressing the die 50 in step 80. A layer of color may be applied to the side of the ticking 10 that is not in contact with the core 20 and/or is visible to the caregiver.

[0034] Alternatively, the layer of color may be added after the embossed graphics 24, 26 are added to the ticking 10 in step 72 on top of the polyurethane layer 14. The layer of color or foil may be added to the ticking 10 before, during, or after using the RF welding equipment and die 50 to create the embossed graphics 24, 26.

[0035] Although this disclosure refers to specific embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the subject matter set forth in the accompanying claims.