WO2020153914A1 - Tape reinforced air dunnage bag - Google Patents

Tape reinforced air dunnage bag Download PDF

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Publication number
WO2020153914A1
WO2020153914A1 PCT/TR2019/050208 TR2019050208W WO2020153914A1 WO 2020153914 A1 WO2020153914 A1 WO 2020153914A1 TR 2019050208 W TR2019050208 W TR 2019050208W WO 2020153914 A1 WO2020153914 A1 WO 2020153914A1
Authority
WO
WIPO (PCT)
Prior art keywords
outer layer
dunnage bag
adhesive tape
inflatable air
air dunnage
Prior art date
Application number
PCT/TR2019/050208
Other languages
French (fr)
Inventor
Nurettin Gungor
Ertan TANDIROGLU
Selim Akdogan
Original Assignee
Atlas Dunnage Ambalaj Sanayi Ve Ticaret A.S.
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 Atlas Dunnage Ambalaj Sanayi Ve Ticaret A.S. filed Critical Atlas Dunnage Ambalaj Sanayi Ve Ticaret A.S.
Publication of WO2020153914A1 publication Critical patent/WO2020153914A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P7/00—Securing or covering of load on vehicles
    • B60P7/06—Securing of load
    • B60P7/065—Securing of load by pressurizing or creating a vacuum in a bag, cover or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D22/00—Producing hollow articles
    • B29D22/02—Inflatable articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
    • B65D81/051—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using pillow-like elements filled with cushioning material, e.g. elastic foam, fabric
    • B65D81/052—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using pillow-like elements filled with cushioning material, e.g. elastic foam, fabric filled with fluid, e.g. inflatable elements
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/62—Stitching
    • 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
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • 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
    • 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
    • B29C66/01—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
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • 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
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • 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
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7292—Textile or other fibrous material made from plastics coated
    • 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

Definitions

  • the present invention relates to inflatable air dunnage bags that are used in land, maritime and railway transportation for stabilizing and securing freights by means of filling gaps between loads.
  • Outer layer is manufactured from textile fabric (polypropylene, polyethylene, polyester, etc.) and the inner layer (membrane) is manufactured from plastic film (polyethylene, polyamide, polypropylene, etc.).
  • the present invention discloses a tape reinforced air dunnage bag obtained by means of taping inner and outer portions of body fabric used as an outer layer and sewing these portions up thereafter for the purpose of sealing open ends of the outer layer securely in this variety of inflatable air dunnage bags .
  • air dunnage bags having an outer layer manufactured from circular woven fabric are split into different levels (i.e. Level 0-1-2-3-4-5) depending on their operating pressures.
  • Level 0-1-2-3-4-5 When the level of an air dunnage bag increases, its operating pressure values increase as well.
  • Strength of the outer layer fabric used in the design of air dunnage bag which is required for providing these operating pressure values is obtained by means of increasing the weight of fabric used in air dunnage bag.
  • inner layer liner thickness can also be increased in this regard.
  • the fabric weight used in the outer layer is increased in order to obtain tensile/puncture strength values based on the level of air dunnage bag and thus, air dunnage bag can be sewed up without creating need towards additional materials or labor (folding inwards-cuffing), pre stitching, etc.) .
  • Outer layer fabric in bags produced in such way can be sewed in a manner without folding or with single out-folding or with double out-folding at both of its cut ends depending on the level of the air dunnage bag.
  • outer layer fabric is folded inwards at certain distances from its both ends depending on the level of the air dunnage bag and two layers of fabric are brought together by means of sewing method in order to increase strength in weft and warp directions at the sewing area. Since additional textile materials are used in the process of folding inwards and manual labor involving both folding inwards and sewing correspondingly in this practice, air dunnage bag material costs and manual labor costs increase substantially due to the abovesaid manual labor involving folding inwards and sewing even if low amounts of textile fabric are used.
  • the object of the present invention is to eliminate abovementioned problems by means of the inventive air dunnage bags manufactured from adhesive tape reinforced fabrics.
  • AAR relevant standards
  • taping is performed at both cut ends of the outer layer fabric that is of low in amount and strength and from inner or outer portions to cut edges on both surfaces of the fabric.
  • adhesive tape used herein corresponds to an adhesive element that is present in the state of the art and that can be used for adhesive bonding purposes and that can be manufactured from all types of materials. Adhesive tape's length is determined based on the width of the outer layer fabric.
  • Taping is performed on the inner portion or the outer portion of the outer layer fabric in order to increase the tensile and tear strength in the area where sewing is performed.
  • adhesive tape rubber based (synthetic or natural) hot melt tapes or water or solvent based acrylic adhesive tapes, hot melt adhesive tapes having a woven fabric carrier, aluminum bearing adhesive tapes, fiber/thread reinforced bearing adhesive tapes or Kraft bearing adhesive tapes can be used.
  • hot melt adhesive based, polymer bearing (BOPP) adhesive tape is used in the present invention.
  • Figure 1 Inside Taping, sewing without folding
  • Top View Figure 2 Inside Taping, sewing without folding, Sectional
  • Figure 5 One time folding, Outside Taping, Sectional View
  • Figure 6 One time folding, Inside Taping, Sectional View
  • the present invention relates to an inflatable air dunnage bag that can be used in land, maritime and railway transportation for the purpose of stabilizing and securing freights by means of filling gaps between loads
  • inflatable air dunnage bag comprises; an outer layer fabric manufactured from a material selected from polypropylene, polyethylene, polyester; an inner layer manufactured from a polymer film material selected from polyethylene, polyamide, polypropylene; an adhesive tape (2) positioned from the inner portion or the outer portion on cut ends located at upper and lower portions of a first surface and a second surface directly on the outer layer portion that increases tensile strength, tear strength, puncture strength and bursting strength in weft and warp directions .
  • the inventive inflatable air dunnage bag comprises single or double sided adhesive tape (2) selected from the group of adhesive tapes including hot melt or acrylic based adhesive tape, hot melt tape that is capable of bearing canvas textile fabric, aluminum bearing and fiber/thread reinforced fabric bearing or Kraft bearing adhesive tapes that increases the tensile strength, tear strength, puncture strength, and bursting strength in both weft and warp directions.
  • adhesive tapes including hot melt or acrylic based adhesive tape, hot melt tape that is capable of bearing canvas textile fabric, aluminum bearing and fiber/thread reinforced fabric bearing or Kraft bearing adhesive tapes that increases the tensile strength, tear strength, puncture strength, and bursting strength in both weft and warp directions.
  • an adhesive tape (2) comprising hot melt adhesive for bonding and BOPP for the film type is used.
  • Another characteristic of the present invention is that it comprises the adhesive tape (2) such that the adhesive amount of the adhesive tape (2) is between 10g/m 2 and 100 g/m 2 .
  • Adhesive tape's length (X) is determine based on the width (W) of the outer layer fabric. Another characteristic of the inventive inflatable air dunnage bag is that the adhesive tape (2) amount in the total tape length (X) is 1/3 of minimum outer layer fabric width (W) .
  • Adhesive tapes (2) are positioned directly on the outer layer fabric.
  • outer layer of the air dunnage bag may be reinforced by means of applying adhesive tape (2) directly to the outer layer fabric. On areas where adhesive tapes (2) are applied are then subjected to sewing (1) operation.
  • Taping operation may be implemented in a total of 3 different ways during the production phase of the inventive tape reinforced air dunnage bag:
  • single sided adhesive tape (2) is applied from the inner portion of the outer layer on both surfaces and at both ends of the fabric (4 in total) . At this point there are no connections present with the inner layer. This only provides reinforcement to the fabric.
  • single sided adhesive tape (2) is applied from the outer portion of the outer layer on both surfaces and at both ends of the fabric (4 in total) . At this point there are no connections present with the inner layer. This only provides reinforcement to the fabric.
  • double sided adhesive tape (2) is applied from the inner portion of the outer layer at both ends of the fabric (2 in total) . At this point there are no connections with the inner layer. This only provides reinforcement to the fabric .
  • inventive inflatable air dunnage bag comprises at least 4 single sided adhesive tapes (2) positioned individually and independent from the inner layer at both ends of the upper portion of a first surface and the upper portion of a second surface and at both ends of the lower portion of a first surface and the lower portion of a second surface in the inner portion of the outer layer.
  • Another characteristic of the present invention is that it comprises at least 4 single sided adhesive tapes (2) positioned individually and independent from the inner layer at both ends of the upper portion of a first surface and the upper portion of a second surface and at both ends of the lower portion of a first surface and the lower portion of a second surface in the outer portion of the outer layer.
  • Yet another characteristic of the present invention is that it comprises single sided and double-sided adhesive tape (2) applied from the inner portion of the outer layer fabric.
  • Figure 1 illustrates the top view of inside taping achieved by means of sewing (1) performed over adhesive tape (2) positioned on the width (W) of the outer layer fabric.
  • Adhesive tape (2) is applied to the outer layer fabric from inside.
  • Tape length (X) is within the value margins as described herein.
  • Figure 2 illustrates the sectional view of adhesive tape (2) application achieved by means of sewing (1) operation performed on adhesive tape (2) .
  • adhesive tapes (2) are applied primarily and sewing operation is carried out subsequently after.
  • sewing operation is preferably performed on adhesive tapes (2) such that seams shall pass over the adhesive tape.
  • Figure 3 illustrates the performing of outside taping operation with adhesive tape (2) carried out in a manner that tape length (X) shall not exceed the width (W) of the outer layer.
  • Figure 3 illustrates the top view of outside taping operation.
  • Figure 4 illustrates the sectional view of outside taping operation.
  • Figure 5 illustrates the sectional view of one time folding, outside taping operation
  • Figure 6 illustrates the sectional view of one time folding, inside taping operation
  • Figure 7 illustrates the sectional view of double folding, outside taping operation
  • Figure 8 illustrates the sectional view of double folding, inside taping operation.
  • Yet another characteristic of the present invention is that it comprises adhesive tape (2) positioned through heat treating at inner or outer portion of the outer layer fabric.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Buffer Packaging (AREA)
  • Laminated Bodies (AREA)

Abstract

The present invention relates to an inflatable air dunnage bag that can be used in land, maritime and railway transportation in order to stabilize and secure frights by means of filling gaps between loads wherein the inflatable air dunnage bag comprises; an outer layer textile fabric manufactured from a material selected from polypropylene, polyethylene, polyester; an inner layer manufactured from a polymer film material selected from polyethylene, polyamide, polypropylene; an adhesive tape (2) positioned from the inner portion or the outer portion on cut ends located at upper and lower portions of a first surface and a second surface directly on the outer layer portion that increases tensile strength, tear strength, puncture strength and bursting strength in weft and warp directions.

Description

TAPE REINFORCED AIR DUNNAGE BAG
Technical Field
The present invention relates to inflatable air dunnage bags that are used in land, maritime and railway transportation for stabilizing and securing freights by means of filling gaps between loads. Outer layer is manufactured from textile fabric (polypropylene, polyethylene, polyester, etc.) and the inner layer (membrane) is manufactured from plastic film (polyethylene, polyamide, polypropylene, etc.).
The present invention discloses a tape reinforced air dunnage bag obtained by means of taping inner and outer portions of body fabric used as an outer layer and sewing these portions up thereafter for the purpose of sealing open ends of the outer layer securely in this variety of inflatable air dunnage bags .
State of the Art
Damages that occur during transportation are the most common adversities encountered in shipments. Many companies spend large amounts of money on transport damage costs every year. Each and every single damage increases freight insurance premiums that companies are required to pay while products that are to be reproduced due to damages in transport increase labor costs and cause loss of time, as well as financial resources. Therefore, using inflatable air dunnage bags in prevention of such adversities is the most sensible and affordable action to take. In general, inflatable air dunnage bags are utilized in order to secure and stabilize freights by means of filling gaps between them, thereby preventing these frights from getting damaged in transport due to various reasons including slipping, overturning, etc. This variety of inflatable air dunnage bags further comprises valves enabling air dunnage bags to be inflated in the place of use or venting the air out after use.
In the state of the art, air dunnage bags having an outer layer manufactured from circular woven fabric are split into different levels (i.e. Level 0-1-2-3-4-5) depending on their operating pressures. When the level of an air dunnage bag increases, its operating pressure values increase as well. Strength of the outer layer fabric used in the design of air dunnage bag which is required for providing these operating pressure values is obtained by means of increasing the weight of fabric used in air dunnage bag. Analogously, inner layer liner thickness can also be increased in this regard.
In this technique, the fabric weight used in the outer layer is increased in order to obtain tensile/puncture strength values based on the level of air dunnage bag and thus, air dunnage bag can be sewed up without creating need towards additional materials or labor (folding inwards-cuffing), pre stitching, etc.) . Outer layer fabric in bags produced in such way can be sewed in a manner without folding or with single out-folding or with double out-folding at both of its cut ends depending on the level of the air dunnage bag.
Alternatively, to be able to use low amounts of fabric, outer layer fabric is folded inwards at certain distances from its both ends depending on the level of the air dunnage bag and two layers of fabric are brought together by means of sewing method in order to increase strength in weft and warp directions at the sewing area. Since additional textile materials are used in the process of folding inwards and manual labor involving both folding inwards and sewing correspondingly in this practice, air dunnage bag material costs and manual labor costs increase substantially due to the abovesaid manual labor involving folding inwards and sewing even if low amounts of textile fabric are used.
In both of these manufacturing methods, both additional material consumption and increase of costs due to manual labor are inevitable.
Therefore, the object of the present invention is to eliminate abovementioned problems by means of the inventive air dunnage bags manufactured from adhesive tape reinforced fabrics.
Description of the Invention
It is thus an object of the present invention to produce air dunnage bags delivering the same performance with lower material consumption and lower manual labor (sewing and hand workmanship) costs and without increasing fabric amounts used in outer layer or without necessitating the manual labor activities involving folding inwards (cuffing) and sewing as an alternative. Thus, the present invention can increase the production capacity with available production resources.
It is therefore another object of the present invention to increase tensile, tear and puncture strength of the outer layer textile fabric in both weft and warp directions by means of performing taping operation on areas where sewing operation is going to be performed or in inner or outer portions of textile fabric used directly as an outer layer with adhesive tapes having specific lengths depending on the measurements of the bag, and thereby allowing production with amounts of fabric a lot lower than test criteria defined in relevant standards (AAR) in the current state or without necessitating additional hand workmanship costs and material consumption that may result from using low amounts of fabric in inflatable air dunnage bags having an outer layer manufactured from textile fabric selected from polymers such as polypropylene, polyethylene, polyester, etc. and an inner layer manufactured from polymer films selected from polyethylene, polyamide, polypropylene etc.
It is therefore an object of the present invention to economize materials, energy consumption and manual labors, thereby developing an environment friendly product. In order to achieve this object, taping is performed at both cut ends of the outer layer fabric that is of low in amount and strength and from inner or outer portions to cut edges on both surfaces of the fabric.
It should be understood that the term adhesive tape used herein corresponds to an adhesive element that is present in the state of the art and that can be used for adhesive bonding purposes and that can be manufactured from all types of materials. Adhesive tape's length is determined based on the width of the outer layer fabric.
Taping is performed on the inner portion or the outer portion of the outer layer fabric in order to increase the tensile and tear strength in the area where sewing is performed. As for adhesive tape; rubber based (synthetic or natural) hot melt tapes or water or solvent based acrylic adhesive tapes, hot melt adhesive tapes having a woven fabric carrier, aluminum bearing adhesive tapes, fiber/thread reinforced bearing adhesive tapes or Kraft bearing adhesive tapes can be used. Preferably, hot melt adhesive based, polymer bearing (BOPP) adhesive tape is used in the present invention.
It is thus another object of the present invention to prevent needle holes from enlarging under pressure, thereby keeping the film inside from thinning during transportation or keeping the film inside from getting damaged due to external factors in areas where sewing of air dunnage bag is performed on adhesive tapes. Description of the Figures
Figure 1 : Inside Taping, sewing without folding, Top View Figure 2 : Inside Taping, sewing without folding, Sectional
View Figure 3: Outside Taping, sewing without folding, Top View Figure 4 : Outside Taping, sewing without folding,
Sectional View
Figure 5: One time folding, Outside Taping, Sectional View Figure 6: One time folding, Inside Taping, Sectional View
Figure 7 : Double folding, Outside Taping, Sectional View
Figure 8 : Double folding, Inside Taping, Sectional View
Description of the Reference Numbers
NO Part/Section Name
W Width of Outer Layer Fabric X Tape Length
1 Stitch
2 Adhesive Tape
Detailed Description of the Invention
The present invention relates to an inflatable air dunnage bag that can be used in land, maritime and railway transportation for the purpose of stabilizing and securing freights by means of filling gaps between loads wherein inflatable air dunnage bag comprises; an outer layer fabric manufactured from a material selected from polypropylene, polyethylene, polyester; an inner layer manufactured from a polymer film material selected from polyethylene, polyamide, polypropylene; an adhesive tape (2) positioned from the inner portion or the outer portion on cut ends located at upper and lower portions of a first surface and a second surface directly on the outer layer portion that increases tensile strength, tear strength, puncture strength and bursting strength in weft and warp directions .
The inventive inflatable air dunnage bag comprises single or double sided adhesive tape (2) selected from the group of adhesive tapes including hot melt or acrylic based adhesive tape, hot melt tape that is capable of bearing canvas textile fabric, aluminum bearing and fiber/thread reinforced fabric bearing or Kraft bearing adhesive tapes that increases the tensile strength, tear strength, puncture strength, and bursting strength in both weft and warp directions.
In the inventive tape reinforced inflatable air dunnage bag, preferably an adhesive tape (2) comprising hot melt adhesive for bonding and BOPP for the film type is used.
Another characteristic of the present invention is that it comprises the adhesive tape (2) such that the adhesive amount of the adhesive tape (2) is between 10g/m2 and 100 g/m2.
Adhesive tape's length (X) is determine based on the width (W) of the outer layer fabric. Another characteristic of the inventive inflatable air dunnage bag is that the adhesive tape (2) amount in the total tape length (X) is 1/3 of minimum outer layer fabric width (W) .
Studies that were conducted during the development phase showed that a much better performance can be achieved when the total tape length (X) is used in 1/3 of the minimum outer layer fabric width (W) . Adhesive tapes (2) are positioned directly on the outer layer fabric.
In a preferred embodiment of the present invention, outer layer of the air dunnage bag may be reinforced by means of applying adhesive tape (2) directly to the outer layer fabric. On areas where adhesive tapes (2) are applied are then subjected to sewing (1) operation.
Taping operation may be implemented in a total of 3 different ways during the production phase of the inventive tape reinforced air dunnage bag:
In the first method, single sided adhesive tape (2) is applied from the inner portion of the outer layer on both surfaces and at both ends of the fabric (4 in total) . At this point there are no connections present with the inner layer. This only provides reinforcement to the fabric.
In the second method, single sided adhesive tape (2) is applied from the outer portion of the outer layer on both surfaces and at both ends of the fabric (4 in total) . At this point there are no connections present with the inner layer. This only provides reinforcement to the fabric.
In the first method, double sided adhesive tape (2) is applied from the inner portion of the outer layer at both ends of the fabric (2 in total) . At this point there are no connections with the inner layer. This only provides reinforcement to the fabric .
Yet another characteristic of the inventive inflatable air dunnage bag is that it comprises at least 4 single sided adhesive tapes (2) positioned individually and independent from the inner layer at both ends of the upper portion of a first surface and the upper portion of a second surface and at both ends of the lower portion of a first surface and the lower portion of a second surface in the inner portion of the outer layer.
Another characteristic of the present invention is that it comprises at least 4 single sided adhesive tapes (2) positioned individually and independent from the inner layer at both ends of the upper portion of a first surface and the upper portion of a second surface and at both ends of the lower portion of a first surface and the lower portion of a second surface in the outer portion of the outer layer.
Yet another characteristic of the present invention is that it comprises single sided and double-sided adhesive tape (2) applied from the inner portion of the outer layer fabric.
To provide better and clear understanding of the present invention, operations of taping from inside and taping from outside are illustrated.
Figure 1 illustrates the top view of inside taping achieved by means of sewing (1) performed over adhesive tape (2) positioned on the width (W) of the outer layer fabric. Adhesive tape (2) is applied to the outer layer fabric from inside. Tape length (X) is within the value margins as described herein. Figure 2 illustrates the sectional view of adhesive tape (2) application achieved by means of sewing (1) operation performed on adhesive tape (2) .
Figures presented herein are solely provided for the better understanding of the present invention and do not constitute any limitations to the scope of the present invention. During the production stage of the inventive tape reinforced air dunnage bag, adhesive tapes (2) are applied primarily and sewing operation is carried out subsequently after. In the present invention, sewing operation is preferably performed on adhesive tapes (2) such that seams shall pass over the adhesive tape.
Figure 3 illustrates the performing of outside taping operation with adhesive tape (2) carried out in a manner that tape length (X) shall not exceed the width (W) of the outer layer. Figure 3 illustrates the top view of outside taping operation. Figure 4 illustrates the sectional view of outside taping operation. Figure 5 illustrates the sectional view of one time folding, outside taping operation, Figure 6 illustrates the sectional view of one time folding, inside taping operation, Figure 7 illustrates the sectional view of double folding, outside taping operation and Figure 8 illustrates the sectional view of double folding, inside taping operation.
Yet another characteristic of the present invention is that it comprises adhesive tape (2) positioned through heat treating at inner or outer portion of the outer layer fabric.
During the development stage of the inventive tape reinforced air dunnage bag, burst tests were carried out on both level 1 air dunnage bag used in the state of the art and inventive tape reinforced air dunnage bag according the present invention and subsequently test results were subjected to comparison .
According to these tests, it is mandatory to perform operations of folding inwards and sewing when working on low amounts of fabric (60-65 g/m2) in order to reach the minimum of 8 PSI which is the bursting pressure in Level 1 air dunnage bags. Alternatively, higher amounts of fabrics heavier by approximately 25-30% can also be used. In this case folding inwards and/or sewing operations are not required.
By means of performing 4 single sided taping operations (2 in total if double sided adhesive tapes are used) (without performing the operations of folding inwards and sewing) to fabric having low weight according to the information provided herein, it is possible to obtain a bursting performance of 9- 10 PSI (burst test) in level 1 air dunnage bags with the present invention. Generally, Level 1 air dunnage bags have AAR certificate and subsequently after the burst test (8 PSI) and 19-day-long leak test carried out in accordance with this standard, air dunnage bags that pass these tests must also demonstrate the same performance (8 PSI) in burst tests. This study proves that the strength values of the inventive tape reinforced air dunnage bag are superior to air dunnage bags present in the state of the art.

Claims

1. Inflatable air dunnage bag used in land, maritime and railway transportation for stabilizing and securing freights by means of filling gaps between the loads characterized by comprising; an outer layer textile fabric manufactured from a material selected from polypropylene, polyethylene, polyester
- an inner layer manufactured from polymer film material selected from polyethylene, polyamide, polypropylene
- an adhesive tape (2) positioned from the inner portion or the outer portion on cut ends located at upper and lower portions of a first surface and a second surface directly on the outer layer fabric that increases tensile strength, tear strength, puncture strength and bursting strength in weft and warp directions.
2. Inflatable air dunnage bag according to Claim 1 characterized by comprising single sided and double-sided adhesive tape (2) applied from the inner portion of the outer layer fabric.
3. Inflatable air dunnage bag according to Claims 1 or 2 characterized by comprising single or double sided adhesive tape (2) selected from the group of adhesive tapes including hot melt or acrylic based adhesive tape, hot melt tape that is capable of bearing textile fabric, aluminum film bearing and fiber/thread reinforced polymer material bearing or Kraft bearing adhesive tapes that increases the tensile strength, tear strength, puncture strength, and bursting strength in both weft and warp directions .
4. Inflatable air dunnage bag according to Claim 3 characterized by comprising adhesive tape (2) wherein the adhesive amount is between 10g/m2 and 100 g/m2.
5. Inflatable air dunnage bag according to any one of the preceding Claims characterized by comprising adhesive tape (2) of which amount in the total tape length (X) is min. 1/3 of outer layer fabric width (W) .
6. Inflatable air dunnage bag according to Claim 1 characterized by comprising at least 4 single sided adhesive tapes (2) positioned individually and independent from the inner layer at both ends of the upper portion of a first surface and the upper portion of a second surface and at both ends of the lower portion of a first surface and the lower portion of a second surface in the inner portion of the outer layer.
7. Inflatable air dunnage bag according to Claim 1 characterized by comprising at least 4 single sided adhesive tapes (2) positioned individually and independent from the inner layer at both ends of the upper portion of a first surface and the upper portion of a second surface and at both ends of the lower portion of a first surface and the lower portion of a second surface in the outer portion of the outer layer.
8. Inflatable air dunnage bag according to Claim 1 characterized by comprising at least 2 double sided adhesive tape (2) positioned on lower and upper portions of the inner portion of the outer layer independent from the inner layer.
9. Inflatable air dunnage bag according to Claim 1 characterized by comprising adhesive tape (2) positioned through heat treating operation at inner or outer portion of the outer layer fabric.
PCT/TR2019/050208 2019-01-22 2019-03-29 Tape reinforced air dunnage bag WO2020153914A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2019/00931A TR201900931A2 (en) 2019-01-22 2019-01-22 BAND REINFORCED AIRBAG
TR2019/00931 2019-01-22

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WO2020153914A1 true WO2020153914A1 (en) 2020-07-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020127489B3 (en) 2020-10-19 2021-12-16 Grönheit & Weigel GmbH Ladungssicherungssysteme Device for protecting cargo

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6186714B1 (en) * 1997-12-19 2001-02-13 Illinois Tool Works Inc. Dunnage air bag
EP0893363B1 (en) * 1997-07-24 2001-04-11 Illinois Tool Works Inc. Inflatable dunnage bag

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0893363B1 (en) * 1997-07-24 2001-04-11 Illinois Tool Works Inc. Inflatable dunnage bag
US6186714B1 (en) * 1997-12-19 2001-02-13 Illinois Tool Works Inc. Dunnage air bag

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020127489B3 (en) 2020-10-19 2021-12-16 Grönheit & Weigel GmbH Ladungssicherungssysteme Device for protecting cargo
EP3984907A1 (en) 2020-10-19 2022-04-20 Grönheit & Weigel GmbH Device for protecting a freight

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