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US20150147503A1 - Welding process and product for inflatable product - Google Patents

Welding process and product for inflatable product Download PDF

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Publication number
US20150147503A1
US20150147503A1 US14/553,705 US201414553705A US2015147503A1 US 20150147503 A1 US20150147503 A1 US 20150147503A1 US 201414553705 A US201414553705 A US 201414553705A US 2015147503 A1 US2015147503 A1 US 2015147503A1
Authority
US
United States
Prior art keywords
tensioning structures
portions
tensioning
structures
sheet
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.)
Abandoned
Application number
US14/553,705
Other languages
English (en)
Inventor
Hua Hsiang Lin
Yaw Yuan Hsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Intex Marketing Ltd
Original Assignee
Intex Recreation Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Intex Recreation Corp filed Critical Intex Recreation Corp
Publication of US20150147503A1 publication Critical patent/US20150147503A1/en
Assigned to INTEX RECREATION CORP. reassignment INTEX RECREATION CORP. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HSU, YAW YUAN, LIN, HUA HSIANG
Assigned to INTEX MARKETING LTD. reassignment INTEX MARKETING LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: INTEX RECREATION CORP.
Priority to US15/416,601 priority Critical patent/US10076874B2/en
Assigned to INTEX RECREATION CORP. reassignment INTEX RECREATION CORP. CORRECTIVE ASSIGNMENT TO CORRECT THE PRIORITY APPLICATION, EFFECTIVE DATE, ASSIGNORS, AND JURISDICTION PREVIOUSLY RECORDED ON REEL 035864 FRAME 0661. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNOR(S) HEREBY CONFIRM THE ASSIGNMENT TO BUSINESS CONCERN. Assignors: HSU, YAW YUAN, INTEX INDUSTRIES XIAMEN CO. LTD., LIN, HUA HSIANG, INTEX MARKETING LTD.
Priority to US16/103,049 priority patent/US11065823B2/en
Priority to US17/365,621 priority patent/US11654638B2/en
Abandoned legal-status Critical Current

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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • 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
    • A47C27/08—Fluid mattresses
    • A47C27/081—Fluid mattresses of pneumatic type
    • A—HUMAN NECESSITIES
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    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • B29C65/242—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool the heat transfer being achieved by contact, i.e. a heated tool being brought into contact with the welding tool and afterwards withdrawn from it
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    • 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
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/472—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially flat
    • B29C66/4722—Fixing strips to surfaces other than edge faces
    • 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
    • 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
    • B29C66/723—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 multi-layered
    • 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • B29K2105/256—Sheets, plates, blanks or films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2022/00—Hollow articles
    • B29L2022/02—Inflatable articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/751—Mattresses, cushions
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • 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
    • B32B2327/00—Polyvinylhalogenides
    • B32B2327/06—PVC, i.e. polyvinylchloride
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
    • 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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]

Definitions

  • the present disclosure relates to an inflatable product and, in particular, to a method for attaching tensioning structures to walls of the inflatable product.
  • an inflatable product includes a first sheet made of weldable plastic and a second sheet made of weldable plastic.
  • the first and second sheets cooperates to define an inflatable chamber.
  • the inflatable product further includes a plurality of tensioning structures. Each tensioning structure includes a weldable plastic. A first portion of the tensioning structures is welded to the first sheet and a second portion of the tensioning structures is welded to the second sheet.
  • the inflatable product further includes a plurality of isolating members positioned in the inflatable chamber. The isolating members are positionable to isolate the first portions of the tensioning structures from the second portions of the tensioning structures to block weldable contact between the first and second portions.
  • an inflatable product includes a first sheet made of weldable plastic and a second sheet made of weldable plastic.
  • the first and second sheets cooperate to define an inflatable chamber.
  • the inflatable product further includes a plurality of tensioning structures. Each tensioning structure includes a weldable plastic. A first portion of the tensioning structures are welded to the first sheet and a second portion of the tensioning structures are welded to the second sheet.
  • the inflatable product further includes a portion of a non-metallic isolating member positioned in the inflatable chamber and coupled to at least one of the first and second portions of a tensioning structure of the plurality of tensioning structures.
  • an inflatable product includes a first sheet made of weldable plastic and a second sheet made of weldable plastic.
  • the first and second sheets cooperate to define an inflatable chamber.
  • the inflatable product further includes a plurality of tensioning structures.
  • Each tensioning structure includes a weldable plastic.
  • a first portion of the tensioning structures is welded to the first sheet and a second portion of the tensioning structures is welded to the second sheet.
  • the first portions have structures and the second portions have contours matching at least a portion of the structures of the first portions.
  • an inflatable product includes a first sheet made of weldable plastic and a second sheet made of weldable plastic.
  • the first and second sheets cooperate to define an inflatable chamber.
  • the inflatable product further includes a plurality of tensioning structures.
  • Each tensioning structure includes a weldable plastic.
  • a first portion of the tensioning structures is welded to the first sheet and a second portion of the tensioning structures is welded to the second sheet.
  • the first portions have a seam formed by a clamp.
  • the second portions have a seam formed by the clamp.
  • the perimeters of the seams of the second portions are substantially mirror images of perimeters of the seams of the first portions.
  • a method for producing an inflatable product including the steps of providing a first sheet made of weldable plastic and providing a second sheet made of weldable plastic.
  • the first and second sheets cooperate to define an inflatable chamber.
  • the method further includes the step of providing a plurality of tensioning structures.
  • Each tensioning structure includes a weldable plastic.
  • the plurality of tensioning structures include a first portion and a second portion.
  • the method further includes the step of simultaneously welding the first and second portions of the plurality of tensioning structures to the first and second sheets.
  • a method for producing an inflatable product including the steps of providing a first sheet made of weldable plastic and providing a second sheet made of weldable plastic. The first and second sheets cooperate to define an inflatable chamber.
  • the method further includes the step of providing a plurality of tensioning structures. Each tensioning structure includes a weldable plastic.
  • the plurality of tensioning structures includes a first portion and a second portion.
  • the method further includes the step of providing an isolating member on a roll. The isolating material is configured to isolate the first portions of the tensioning structures from the second portions of the tensioning structures.
  • the method further includes the step of unwrapping the isolating member from the roll, positioning the isolating member between the first and second portions of the plurality of tensioning structures, welding the first portion of the plurality of tensioning structures to the first sheet while the isolating member is positioned between the first and second portions of the plurality of tensioning structures, and welding the second portion of the plurality of tensioning structures to the second sheet while the isolating member is positioned between the first and second portions of the plurality of tensioning structures.
  • a method for producing an inflatable product including the steps of providing a first sheet made of weldable plastic and providing a second sheet made of weldable plastic. The first and second sheets cooperate to define an inflatable chamber.
  • the method also includes the step of providing a plurality of tensioning structures, each tensioning structure including a weldable plastic.
  • the plurality of tensioning structures includes a first portion and a second portion.
  • the method further includes the step of folding the plurality of tensioning structures and welding the first portion of the plurality of tensioning structures to the first sheet and the second portion of the plurality of tensioning structures to the second sheet while the plurality of tensioning structures are folded.
  • a method for producing an inflatable product includes the steps of providing a first sheet made of weldable plastic and providing a second sheet made of weldable plastic. The first and second sheets cooperate to define an inflatable chamber.
  • the method further includes the step of providing a plurality of tensioning structures.
  • Each tensioning structure includes a weldable plastic.
  • the plurality of tensioning structures includes a first portion and a second portion.
  • the method further includes the step of clamping the first portions and second portions of the plurality of tensioning structures together, and welding the first portion of the plurality of tensioning structures to the first sheet and the second portion of the plurality of tensioning structures to the second sheet while the first and second portions of the plurality of tensioning structures are clamped together.
  • FIG. 1 is a schematic diagram showing a welder of the present disclosure including an upper die and a lower die;
  • FIG. 2 is an exploded diagram showing a components of an inflatable product aligned for welding
  • FIG. 3 is an exploded diagram showing a components of another embodiment inflatable product aligned for welding
  • FIG. 4 is a schematic diagram showing the welder of FIG. 1 aligned relative to the inflatable product components of FIG. 3 for welding;
  • FIG. 5 is a partial enlarged view showing the inflatable product components of FIG. 3 and the welder of FIG. 3 ;
  • FIG. 6 is a schematic diagram of another embodiment inflatable product including alignment threads.
  • FIG. 7 is a diagrammatic cross-sectional view of a showing a portion of the inflatable product of FIG. 3 clamped between first and second bars of upper and lower dies of welder 12 showing strands creating recesses in the layers of material of the inflatable product.
  • a welding process for an inflatable product attaches tensioning structures 4 of an inflatable product 10 to inflatable sheets 5 , 7 of inflatable product 10 .
  • a high-power, high-frequency welder 12 is used to attach tensioning structures 4 to inflatable sheets 5 , 7 .
  • Welder 12 includes an upper welding die 1 , a lower welding die 2 , upper bars 11 , and lower bars 21 arranged opposite upper bars 11 .
  • upper and lower bars 11 , 21 are high frequency electrodes that heat materials positioned adjacent thereto using high frequencies.
  • other methods such as heat, can be applied to melt the materials.
  • Upper and lower bars 11 , 21 are laterally spaced apart by the desired spacing of tensioning structures 4 in finished inflatable product 10 .
  • bars 11 , 21 are straight to match straight tensioning structures 4 .
  • bars 11 , 21 may have other shapes, such as circles, to match tensioning structures 4 having other shapes, such as circular columns.
  • the number of bars 11 , 21 depends on the number of tensioning structures 4 in inflatable product 10 .
  • a staging box 3 is provided that includes a plurality of slots 32 in bottom plate 31 that correspond to spacing of lower bars 21 .
  • the components of inflatable product 10 are positioned in staging box 3 and then staging box 3 is positioned between upper and lower welding dies 1 , 2 so that lower bars 21 align with slots 32 to facilitate welding of tensioning structures 4 to inflatable sheets 5 , 7 .
  • Each bar 21 of lower die 2 penetrates through slots 32 , thereby contacting tensioning structures 4 staging box 3 .
  • Upper and lower dies 1 , 2 are drawn together so that lower bars 21 abut bars 11 of upper die 1 with the respective components of inflatable product 10 sandwiched therebetween.
  • staging box 3 is not used to place the components in welder 12 .
  • tensioning structures 4 are plastic strips, preferably made of a weldable plastic, such as PVC. According to this embodiment, tensioning structures 4 form an integral strip of material. According to the present method of manufacturing inflatable product 10 , tensioning structures 4 are cut into strips from a sheet of bulk material. Next, a lower sheet 7 of material, such as PVC, is placed in staging box 3 . Tensioning structures 4 are folded so that the longitudinal edges of tensioning structures 4 are aligned.
  • an isolating member 6 is positioned between the tips of each folded tensioning structure 4 .
  • Folded tensioning structures 4 with isolating members 6 positioned therein are positioned on lower sheet 7 that was previously positioned on staging box 3 .
  • alignment marks are provided on staging box 3 (or elsewhere) to facilitate alignment of the tips (also referred to as first and second portions) of folded tensioning structures 4 over slots 32 of staging box 3 .
  • Upper sheet 5 of inflatable product 10 is then positioned over folded tensioning structures 4 in staging box 3 .
  • Staging box 3 is positioned in the high-power high frequency welding machine so that slots 32 of staging box 3 are aligned and positioned over lower bars 21 of lower die 2 .
  • isolating member 6 can be insulating paper, release paper or the insulating paper made of other materials, and can also adopt a sheet with a low cost and a small thickness, such as non-woven fabric, laminated fabric or oxford fabric and the like, as long as the sheet can block the welding of the adjacent tips of tensioning structures 4 .
  • isolating member 6 is a non-metallic, flexible film. Such a film (or other isolating material) may come will come loose from one or both of weld strips 81 between which it is sandwiched.
  • isolating material 6 is a plastic film having a width about three times the width of the contact portion of bars 11 , 12 and a thickness substantially less than the thickness of tensioning structure 4 and upper and lower sheets 5 , 7 .
  • isolating material 6 is provided on rolls 22 (only one roll 22 is shown). During positioning of isolating material 6 , each respective isolating material is unrolled from roll 22 of isolating material 6 and positioned between respective tips of each tensioning structure 4 . Before or after positioning is complete, each respective piece of isolating material 6 is cut or otherwise detached from roll 22 of isolating material 6 .
  • isolating material 6 may be removed or not removed from inflatable product 10 .
  • isolating material 6 is not removed, it remains inside inflatable product 10 .
  • isolating material 6 remains inside the inflatable product.
  • inflatable product 10 is an air mattress.
  • a side wall/panel 36 may be welded to upper and lower sheets 5 , 7 to cooperate with upper and lower sheets 5 , 7 to define an inflatable interior/chamber.
  • side wall 36 (or other exterior layer) may be provided with an air valve (not shown) to facilitate inflating and deflating inflatable product 10 .
  • Additional details of a suitable air mattress are provided in PCT Patent Publication No. WO2013/130117 A1, titled “INTERNAL TENSIONING STRUCTURES USABLE WITH INFLATABLE DEVICES”, to Lin et al., filed Jun. 12, 2012, the entire disclosure of which is expressly incorporated by reference herein.
  • inflatable product 10 may be other devices, such as inflatable couches, chairs, pools, spas, swim floats, slides, or other inflatable devices.
  • Tensioning structures 4 include a plurality of strands 82 and two pair of plastic weld strips 81 , preferably PVC that capture strands 82 at both ends.
  • Weld strips 81 are welded to upper sheet 5 and lower sheet 7 of inflatable product 10 .
  • weld strips 81 and upper and lower sheets 5 , 7 are made of PVC.
  • Upper and lower sheets 5 , 7 and weld strips 81 have thicknesses ranging from 0.15 to 1.0 millimeters with 0.34 millimeters being preferred for upper and lower sheets 1 , 2 and 0.18 millimeters being preferred for weld strips 81 . Additional details of suitable tensioning structures 4 ′ are provided in PCT Patent Publication No. WO2013/130117 A1, which was previously incorporated by reference herein.
  • Tensioning structures 4 ′ are welded to upper and lower sheets 5 , 7 in a manner similar to that described above for tensioning structures 4 .
  • Lower sheet 5 is positioned in staging box 3
  • tensioning structures 4 ′ are folded so that respective pairs of weld strips 81 are positioned adjacent each other
  • isolating material 6 is positioned between respective weld strips/tips/portions 81 of folded tensioning structures 4 ′
  • upper sheet 7 is positioned in staging box 3
  • staging box 3 is positioned in welder 12
  • upper and lower dies 1 , 2 are drawn together
  • welder is energized to simultaneously weld upper weld strips 81 to upper sheet 5 and lower weld strips 81 to lower sheet 7
  • staging box 3 is removed from welder 12 .
  • isolating material 6 prevents the respective upper and lower weld strips 81 from welding together and isolating materials 6 may or may not be removed from inflatable product 10 .
  • other forms of weld strips 81 may be provided, for example, a single weld strip 81 may be provided at each tip/portion of tensioning structure rather than a pair of weld strips 81 as disclosed in PCT Patent Publication No. WO2013/130117 A1, which was previously incorporated by reference herein.
  • a plastic adhesive sheet (not shown) may be provided on strands 82 as disclosed in PCT Patent Publication No. WO2013/130117 A1, which was previously incorporated by reference herein.
  • a laminate sheet with a grid of strands 82 and one or two adhesive sheets may also be provided as disclosed in U.S. patent application Ser. No. 14/444,474, titled “INFLATABLE SPA,” filed Jul. 28, 2014, the entire disclosure of which is expressly incorporated by reference herein.
  • the only material positioned between upper and lower bars 11 , 12 are upper and lower sheets 5 , 7 , weld strips 81 , portions of strands 82 , and isolating material 6 .
  • upper and lower bars 11 , 21 are only separated by the thickness of upper and lower sheets 5 , 7 , weld strips 81 , strands 82 , and isolating material 6 .
  • Upper and lower sheets 5 , 7 are separated by the thickness of weld strips 81 , portions of strands 82 , and isolating material 6 .
  • weld strips 81 are separated by the thickness of isolating material 6 .
  • the thickness of isolating material 6 is less than the thickness of a single weld strip 81 (or the thickness of tensioning structure 4 discussed above).
  • upper and lower pairs of weld strips 81 are separated by a thickness less than the thickness of a single weld strip 81 (or less than the thickness of tensioning structure 4 discussed above).
  • Upper and lower bars 11 , 21 have a width 30 at their point of contact with respective upper and lower sheets 5 , 7 .
  • seams 32 having a width 34 are formed in between upper sheet 5 and upper pair of weld strips 81 and lower sheet 7 and lower pair of weld strips 81 .
  • upper and lower bars 11 , 21 are separated by a distance less than widths 30, 34.
  • Isolating material 6 has a thickness less than widths 30, 34. According to the preferred embodiment of the present disclosure, the thickness of isolation material 6 is less than one tenth of widths 30, 34. According to other embodiments, the ratio of the thickness of isolation material 6 to widths 30, 34 is 1.0, 0.75, 0.5, 0.25, 0.15, 0.05, 0.025 or less.
  • alignment strands 9 may be provided for tensioning structure 4 ′ that keep adjacent tensioning structures 4 ′ at a desired spacing for welding.
  • each tensioning structure 4 ′ is folding so that isolating member 6 is sandwiched between respective pairs of weld strips 81 .
  • adjacent tensioning structures 4 ′ are connected together with alignment strands 9 at the desired spacing by adhering alignment strand 9 to welds strips 81 .
  • one alignment strand 9 is positioned below tensioning structures 4 ′ and adhered to the underside of the lower-most weld strip 81 .
  • Another alignment strand 9 is positioned above tensioning structures 4 ′ directly above the other alignment strand 9 and adhered to the topside of the upper-most weld strip 81 .
  • the upper and lower alignment strands 9 may be adhered to each other near each weld strip 81 . Because each pair of weld strips 81 is adhered to either the top or bottom alignment strand 9 and the top and bottom alignment strands 9 are adhered to each other, the top and bottom pairs of weld strips 81 are coupled to each other through the top and bottom alignment strands 9 . As shown in FIG. 6 , multiple alignment stands 9 (or pairs of alignment strands 9 ) are adhered across the length of the tensioning structures 4 ′.
  • upper sheet 5 of inflatable product 10 is placed in staging box 3 .
  • the left-most tensioning structure 4 ′ (or the alignment strands 9 ) is pulled over lower sheet 7 and staging box 3 until it is positioned over the left-most slot 32 of staging box 3 .
  • the other tensioning structures 4 ′ are also pulled by alignment strands 9 and positioned over their respective slots 32 in staging box 3 .
  • Upper sheet 5 of inflatable product 10 is then positioned over tensioning structures 4 ′.
  • Staging box 3 is then pushed into the high-power high frequency machine, upper and lower dies 1 , 2 are drawn together and upper and lower pairs of weld strips 81 are simultaneously butt welded to respective upper and lower sheets 5 , 7 .
  • staging box 3 is removed from welder 12 and isolating member 6 may be removed or not removed from within inflatable product 10 .
  • a side panel 36 may be welded to the perimeter edges of upper and lower sheets 5 , 7 to define an inflatable chamber as discussed above.
  • upper and lower sheets 5 , 7 may be welded together along their perimeters to define an inflatable chamber.
  • Alignment strands 9 may be made of a weaker strength strand sufficient for maintaining the alignment of tensioning structures 4 ′. For example, when inflatable product 10 is inflated, alignment strands 9 can be pulled apart without impacting the shaping function of tensioning structures 4 ′. Similarly, the adhesion of alignment strands 9 to weld strips 81 and/or each other can be weak, but sufficient to maintain the alignment of tensioning structures 4 ′. For example, when inflatable product 10 is inflated, alignment strands 9 can become detached from weld strips 81 of tensioning structures 4 ′ so tensioning structures 4 ′ can perform their shaping function.
  • Alignment strands 9 can be weak so that upper and lower pairs of weld strips 81 can separate when the inflatable product 10 is inflated.
  • Alignment strands 9 may also be provided with PVC sheet tensioning structures 4 of FIG. 2 .
  • isolating member 6 is an insulating ink, such as water-based ink, or other liquid that is printed or otherwise applied to one side of a pair of weld strips 81 to isolate weld strips 81 from each other during welding.
  • the process of welding tensioning structures 4 ′ to upper and lower sheets 5 , 7 may follow the same steps as described above. Because isolating member 6 is applied to weld strips 81 it is preferably to not remove the isolating material from weld strips 81 .
  • These types of isolating members 6 may also be applied to all or portions of PVC sheet tensioning structures 4 of FIG. 2 .
  • insulating ink may be applied to one side of tensioning structures 4 or only the portions necessary to avoid welding respective inner tips/portions of folded tensioning structures 4 together.
  • weld strips 81 are preferably formed from a roll of PVC material as described in PCT Patent Publication No. WO2013/130117 A1, which was previously incorporated by reference herein.
  • This roll of material may include PVC weld strip material and the isolating material 6 applied to the PVC weld strip material.
  • the isolating material 6 may be applied to weld strips 81 before individual weld strips 81 are cut to length and/or before strands 82 are adhered to weld strips 81 .
  • weld strips 81 , strands 82 , and isolating material 6 are clamped by upper and lower bars 11 , 21 .
  • certain characteristics of structures on one side of isolating member 6 may be transferred to structures on the other side of isolating member 6 .
  • strands 82 positioned between one pair of weld strips 81 a are offset from strands from the opposite pair of weld strips 81 b.
  • the protrusions created by upper strands 82 a create depressions 84 b in lower weld strips 81 b.
  • the protrusions created by lower strands 82 b create depressions 84 a in upper weld strips 81 a. After welding and unclamping of bars 11 , 12 , these depressions 84 a, 84 b remain in weld strips 81 a, 81 b.
  • the protrusion may leave characteristics in isolating members 6 . For example, after clamping and welding, holes may be created in isolating members 6 where strands 82 make impressions in isolating members 6 .
  • bars 11 , 21 create seams 33 between upper and lower sheets 5 , 7 and weld strips 81 .
  • the outer perimeter profile of seams 33 is generally defined by the area of clamping overlap between bars 11 , 21 .
  • the perimeter of seam 33 of upper sheet 5 is generally the mirror image of the perimeter of seam 33 of lower sheet 7 .
  • portions of isolating material 6 may remain on weld strips 81 . Some of these portions may remain even though the rest of the respective isolating member 6 is removed from inflatable product 10 . These remaining portions may be visible or microscopic.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
US14/553,705 2013-11-25 2014-11-25 Welding process and product for inflatable product Abandoned US20150147503A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US15/416,601 US10076874B2 (en) 2013-11-25 2017-01-26 Welding process and product for inflatable product
US16/103,049 US11065823B2 (en) 2013-11-25 2018-08-14 Welding process and product for inflatable product
US17/365,621 US11654638B2 (en) 2013-11-25 2021-07-01 Welding process and product for inflatable product

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310598878.5A CN103600502A (zh) 2013-11-25 2013-11-25 一种充气产品熔着工艺
CN201310598878.5 2013-11-25

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US20150147503A1 true US20150147503A1 (en) 2015-05-28

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US15/416,601 Active US10076874B2 (en) 2013-11-25 2017-01-26 Welding process and product for inflatable product
US16/103,049 Active US11065823B2 (en) 2013-11-25 2018-08-14 Welding process and product for inflatable product
US17/365,621 Active US11654638B2 (en) 2013-11-25 2021-07-01 Welding process and product for inflatable product

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US16/103,049 Active US11065823B2 (en) 2013-11-25 2018-08-14 Welding process and product for inflatable product
US17/365,621 Active US11654638B2 (en) 2013-11-25 2021-07-01 Welding process and product for inflatable product

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US (4) US20150147503A1 (es)
EP (2) EP3073869B1 (es)
CN (1) CN103600502A (es)
AU (2) AU2014352637B9 (es)
BR (2) BR122017024910B1 (es)
CA (1) CA2931453C (es)
CL (1) CL2016001246A1 (es)
ES (1) ES2824256T3 (es)
MX (1) MX2016006705A (es)
RU (1) RU2620743C1 (es)
WO (1) WO2015077788A1 (es)

Cited By (5)

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NZ720589A (en) 2021-06-25
EP3073869B1 (en) 2020-07-15
US11065823B2 (en) 2021-07-20
BR122017024910B1 (pt) 2021-06-29
CL2016001246A1 (es) 2017-06-02
US20170136726A1 (en) 2017-05-18
MX2016006705A (es) 2017-01-11
US10076874B2 (en) 2018-09-18
US11654638B2 (en) 2023-05-23
AU2014352637A1 (en) 2016-06-16
AU2014352637B2 (en) 2017-02-02
CN103600502A (zh) 2014-02-26
EP3269533A1 (en) 2018-01-17
EP3269533B1 (en) 2020-05-06
US20180354201A1 (en) 2018-12-13
AU2017202876A1 (en) 2017-05-18
US20210331425A1 (en) 2021-10-28
RU2620743C1 (ru) 2017-05-29
CA2931453A1 (en) 2015-05-28
BR122017024910A2 (pt) 2019-09-10
BR112016011476A2 (pt) 2018-03-27
EP3073869A1 (en) 2016-10-05
AU2014352637B9 (en) 2017-02-23
WO2015077788A1 (en) 2015-05-28
ES2824256T3 (es) 2021-05-11
CA2931453C (en) 2018-03-27
EP3073869A4 (en) 2017-11-08
AU2017202876B2 (en) 2018-11-15

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