WO2008040511A1 - Process for producing flexible panels comprising laminates of unidirectionally arranged polymeric tapes - Google Patents

Process for producing flexible panels comprising laminates of unidirectionally arranged polymeric tapes Download PDF

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Publication number
WO2008040511A1
WO2008040511A1 PCT/EP2007/008500 EP2007008500W WO2008040511A1 WO 2008040511 A1 WO2008040511 A1 WO 2008040511A1 EP 2007008500 W EP2007008500 W EP 2007008500W WO 2008040511 A1 WO2008040511 A1 WO 2008040511A1
Authority
WO
WIPO (PCT)
Prior art keywords
laminates
tapes
monolayer
polymeric
panel
Prior art date
Application number
PCT/EP2007/008500
Other languages
French (fr)
Inventor
Jan Adolph Dam Backer
Bart Clemens Kranz
Original Assignee
Novameer B.V.
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
Priority to DK07818580.8T priority Critical patent/DK2079579T3/en
Priority to MX2009003675A priority patent/MX2009003675A/en
Priority to US12/311,316 priority patent/US7814568B2/en
Priority to AT07818580T priority patent/ATE462558T1/en
Application filed by Novameer B.V. filed Critical Novameer B.V.
Priority to CA002665466A priority patent/CA2665466A1/en
Priority to JP2009530791A priority patent/JP2010505647A/en
Priority to PL07818580T priority patent/PL2079579T3/en
Priority to AU2007304496A priority patent/AU2007304496B2/en
Priority to SI200730248T priority patent/SI2079579T1/en
Priority to BRPI0717297-4A2A priority patent/BRPI0717297A2/en
Priority to EP07818580A priority patent/EP2079579B1/en
Priority to DE602007005674T priority patent/DE602007005674D1/en
Publication of WO2008040511A1 publication Critical patent/WO2008040511A1/en
Priority to IL197911A priority patent/IL197911A0/en
Priority to NO20091755A priority patent/NO20091755L/en

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Classifications

    • 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
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/14—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a face layer formed of separate pieces of material which are juxtaposed side-by-side
    • 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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B2571/00—Protective equipment
    • B32B2571/02—Protective equipment defensive, e.g. armour plates, anti-ballistic clothing
    • 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
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/911—Penetration resistant layer
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24752—Laterally noncoextensive components
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24752—Laterally noncoextensive components
    • Y10T428/2476—Fabric, cloth or textile component

Definitions

  • the present invention relates to flexible panels comprising laminates, the laminates being built of at least two monolayers of unidirectionally arranged polymeric tapes and a process for producing said panels.
  • the flexible panels according to the invention may be used for antiballistic clothing.
  • Antiballistic clothing may comprise rigid plates e.g. metal, ceramic or polymeric plates as inserts in antiballistic protective vests. With this type of clothing it cannot be guaranteed that the wearer will have the freedom of movement necessary in a duty situation. Besides their relatively heavy weight, the fact that the vest inserts lack flexibility makes them a great deal less comfortable to wear.
  • antiballistic protective clothing consisting of multiple layers of flat textile structures. Very often aramide fibre fabrics are used in the individual protective layers of the antiballistic clothing. In addition woven fabrics and other textile flat structures made from high tenacity polyethylene fibers have been suggested for use in antiballistic clothing.
  • Such clothing is also referred to as "soft ballistic” and it aims to decrease the weight of the body armour while enhancing wear comfort and maintaining or even enhancing impact performance. It is an object of the present invention to provide a flexible panel and a process for producing a flexible panel for use in soft antiballistic applications that meets the current aim to decrease the weight of body armour while enhancing wear comfort and maintaining or even enhancing impact performance.
  • a flexible panel comprising a plurality of individual laminates, the laminates being built of at least two monolayers of polymeric tapes bonded together, the direction of the polymeric tapes being the same in every monolayer and the polymeric tapes of each monolayer are offset to the tapes of the adjoining monolayer, characterised in that the laminates are stacked on top of each other and secured to each other by separated bonding points or bonding lines.
  • the object of the present invention is also achieved by a process for producing a flexible panel comprising a plurality of individual laminates, the laminates being built of at least two monolayers of polymeric tapes bonded together, the direction of the polymeric tapes being the same in every monolayer and the polymeric tapes of each monolayer are offset to the tapes of the adjoining monolayer, characterised in that the laminates are being stacked on top of another and being secured to each other by separated bonding points or bonding lines.
  • the panel Due to the separated bonding points or bonding lines the panel will remain very flexible as opposed to panels being bonded over the whole surface area.
  • the panels take up the impact energy to which they are subjected with a high level of energy absorption.
  • the bonding points or bonding lines may be located at the edges of the panel. Preferably the bonding points or bonding lines are located in the middle of the panel. It is, however, more preferred that the bonding points or lines that secure the stacked laminates to each other are not aligned in adjacent laminates. The location of the bonding points or lines of two laminates are therefore offset to the bonding points or lines of those laminates adjacent the two laminates. Thus, a highly flexible panel can be obtained that, when it is subjected to bending, shows reduced crinkling of those laminates subjected to the smaller, i.e. the inner bending radius.
  • the laminates are secured to adjacent laminates in an alternating manner of bonding points or lines in the middle of the laminate and at the edges of the laminate.
  • the laminates may be secured to each other by a thread e.g. by sewing or knitting.
  • the laminates may be secured to each other by rivets, preferably rivets made from a polymeric material.
  • the laminates may also be secured to each other by a welded joint. Welding may be carried out by ultrasonic welding or laser welding.
  • the panel according to the present invention may be used as insert in antiballistic protective vests. It is however preferred that the panels are in such a shape so that formfitting soft body armour i.e. soft antiballistic vests may be formed from the panels.
  • the body armour can be fashioned after body armours of the prior art, e.g. in the form of a vest or a jacket.
  • the individual laminates that are comprised within the panels according to the invention may have a thickness between 10 ⁇ m and 1500 ⁇ m, preferably between 50 ⁇ m and 1500 ⁇ m, more preferably between 50 ⁇ m and 1000 ⁇ m, and most preferably between 50 ⁇ m and 500 ⁇ m.
  • the panels comprises at least 2, preferably at least 4 individual laminates that are stacked on top of each other, more preferably at least 10 individual laminates and most preferably at least 50 individual laminates.
  • the panel according to the invention may comprise 100 or up to 500 individual laminates.
  • the tapes building the laminates that are comprised within the panels are arranged in a parallel, i.e. side by side relationship and the direction of the tapes is the same in every monolayer.
  • the monolayers of the laminates are not cross-plied at an angle with respect to each other.
  • the number of tapes per monolayer may be e.g. up to 10, up to 100, up to 1000 but also up to 10.000 or more.
  • the monolayers are so stacked that the tapes of each layer are offset to the tapes of the adjoining monolayer above or below that layer. Thus, the joints between adjacent tapes of one monolayer are covered by the tapes of the adjoining monolayer above or below that layer.
  • the tapes may be arranged parallel to each other with each polymeric tape of one monolayer having an overlap with the polymeric tape that is positioned adjacent thereto.
  • the polymeric tapes used in the process according to the invention may be spun monofilaments.
  • the term monofilament as used herein encompasses any single filament spun individually, e.g. by melt spinning or gel spinning.
  • Tapes could also be made in a solid state extrusion (SSE) or skived from solid material followed by post drawing.
  • SSE solid state extrusion
  • the polymeric tapes used in the process according to the invention may also be prepared by cutting or slitting a polymer film.
  • the polymer film may be calendered, drawn or even overdrawn to achieve the necessary tensile strength.
  • the laminates may be produced by forming a first monolayer of polymeric tapes by pre-tensioning the polymeric tapes and subsequently positioning the polymeric tapes under tension in a unidirectional, parallel manner, forming at least a second monolayer over the first monolayer in the same manner the first monolayer is formed, thereby -stacking the at least two monolayers of polymeric tapes in such a way that the direction of the polymeric tapes is the same in every monolayer and that the polymeric tapes of each monolayer are offset to the tapes of the adjoining monolayer above or below that monolayer and consolidating the thus stacked monolayers of polymeric tapes to obtain a laminate.
  • the laminate may comprise more than 2, e.g. 3, 4 or up to 25, even up to 50 or up to 100 monolayers of polymeric tapes all stacked in such a way that the direction of the polymeric tapes is the same in every monolayer and that the polymeric tapes of each monolayer are offset to the tapes of the adjoining monolayer above or below that monolayer.
  • Consolidation of the stacked monolayers that form the laminate is carried out in a manner known to the person skilled in the art preferably by applying pressure and heat to the stacked monolayers, e.g. by thermocalendering.
  • the tapes used for a process according to the present invention have a tensile strength of at least 200 MPa, more preferably the polymeric tapes have a tensile strength of at least 400 MPa. Depending on the polymeric material and the draw ratio the polymeric tapes may exhibit a tensile strength of at least 800 MPa and up to 20 GPa.
  • the tensile strength of the polymeric tapes is measured in accordance with ASTM D638.
  • the tapes may be selected from the group consisting of polyethylene, ultra high molecular weight polyethylene, polypropylene, polyamide, polybutadiene terephthalate and polyethylene terephthalate, polyethylene naphtalate, polyvinyl alcohol, polyphenylidensulfide, copolymers of these polymers and mixtures thereof.
  • the tapes are meltbonded with a thermoplastic resin material.
  • This material may be applied to the tapes after forming the tape, it may be melt spun with the tapes as sheath material or it may be applied to a polymeric film before slitting it into tapes.
  • Another possibility of applying the thermoplastic resin material is that a substrate layer of the resin material is placed between the monolayers building the laminate.
  • Suitable resin material may be selected from the group consisting of polyethylene, ultra high molecular weight polyethylene, polypropylene, polyamide, polybutadiene terephthalate and polyethylene terephthalate, polyethylene naphtalate, polyvinyl alcohol, polyphenylidensulfide, copolymers of these polymers and mixtures thereof.
  • EAA alkyl acrylate copolymer
  • EVA ethylene vinyl acetate copolymer
  • EBA ethylene-butyl acrylate copolymer
  • EMA ethylenemethyl acrylate copolymer
  • LLDPE linear low density polyethylene
  • HDPE high density polyethylenes
  • LPDE low density polyethylenes
  • PIB polyisobutylene
  • PU polyurethane
  • a primer may be applied on the tape surface as an adhesion promoter.
  • a suitable primer may be e.g. chlorinated polypropylene.
  • An additional effect of a primer is less fibrillating of the tapes in the subsequent processing steps.
  • Other surface treatments that can be used to enhance bonding include plasma or corona treatment.
  • meltbonding the polymeric tapes forming the at least two monolayers of the individual laminates may also be bonded by a pressure sensitive adhesive.
  • Polymeric tapes comprising only one polymeric material may also be consolidated without any additional resin material or adhesive.
  • the monolayers are in this case consolidated at a temperature range just below the melting temperature of the polymeric tapes. Such a method is known in the art as "hot compaction".
  • tape as used in the context of the present invention means flexible, elongate elements of essentially uniform width and thickness that can have any shape except a circular shape.
  • the width/height ratio of the tapes is at least 2, preferably at least 5 and more preferably at least 20.
  • Said tapes can be positioned in a side by side relationship with lateral sides of adjacent tapes being essentially parallel.
  • the tapes may be derived from a slit film.
  • the tapes may also be monofilaments.
  • the tapes used in the process according to the present invention may have various cross sections e.g. quadrangular cross section or triangular cross section.
  • the polymeric tapes are drawn with a draw ratio of at least 1 :5, more preferably the polymeric tapes are drawn with a draw ratio of at least 1 :15. Draw ratios of 1 :50 or more are especially preferred.
  • Quadrangular tapes that are monofilaments may preferably be 1 ,5mm to 10mm in width and 20 ⁇ m to 1500 ⁇ m thick.
  • Quadrangular tapes made by slitting a film may be 2mm to 300mm wide and 1 ⁇ m to 1000 ⁇ m, preferably 4 ⁇ m to 50 ⁇ m thick.
  • Tapes with triangular cross section may be 2 to 10mm in width and thickness.
  • the laminates used for the panels or for the process for producing a panel may be placed on top of another in such a way that the polymeric tapes building the laminates all lie in the same direction.
  • at least one of the laminates placed on top of another is turned relative to the adjoining laminate placed above or below that laminate, more preferably at least one of the laminates is turned by 90° relative to the adjoining laminate placed above or below that laminate thus obtaining higher tensile strength in transverse direction of the panel.
  • the laminates may also be stacked in an alternating manner of 0° and 90°.
  • the panel may comprise an identical number of laminates with 0° and turned by 90°. It is, however, also sufficient if only the top and bottom laminate are being turned by 90° relative to the other laminates.
  • Yet another object of the present invention is to provide a special use of such a panel.
  • the panels according to the present invention may be used to form airbags. As indicated the panels according to the present invention are especially suited for antiballistic protective clothing. The panels may be used in soft body armour applications also called soft ballistics.
  • the present panel is provided with a shock absorber on the body side of the body armour.
  • the panels according to the present invention may also be provided with one or more stab resistant layers or laminates.
  • the stab resistant layers or laminates may be provided on one or on both surface sides.
  • the stab resistant layers or laminates may also be sandwiched between individual laminates even in an alternating manner of laminates according to the invention and stab resistant layers or laminates.
  • the panels according to the present invention may also be provided with one or more layers of aramid fibres or ultrahigh molecular weight polyethylene. These layers enhance the antiballistic performance of the panel and they may be provided on one or on both surface sides.
  • the layers of aramid fibres or ultrahigh molecular weight polyethylene may also be sandwiched between individual laminates even in an alternating manner of laminates according to the invention and layers of aramid fibres or ultrahigh molecular weight polyethylene.
  • Aramid layers are preferably sandwiched between individual laminates to prevent fraying of the aramid fibres.

Abstract

A flexible panel comprising a plurality of individual laminates, the laminates being built of at least two monolayers of unidirectionally arranged polymeric tapes bonded together, the direction of the polymeric tapes being the same in every monolayer and the polymeric tapes of each monolayer are offset to the tapes of the adjoining monolayer, characterised in that the laminates are stacked on top of each other and secured to each other by separated bonding points or bonding lines.

Description

Process for producing flexible panels comprising laminates of unidirectionally arranged polymeric tapes
Description:
The present invention relates to flexible panels comprising laminates, the laminates being built of at least two monolayers of unidirectionally arranged polymeric tapes and a process for producing said panels. The flexible panels according to the invention may be used for antiballistic clothing.
Antiballistic clothing may comprise rigid plates e.g. metal, ceramic or polymeric plates as inserts in antiballistic protective vests. With this type of clothing it cannot be guaranteed that the wearer will have the freedom of movement necessary in a duty situation. Besides their relatively heavy weight, the fact that the vest inserts lack flexibility makes them a great deal less comfortable to wear.
As an alternative there is antiballistic protective clothing consisting of multiple layers of flat textile structures. Very often aramide fibre fabrics are used in the individual protective layers of the antiballistic clothing. In addition woven fabrics and other textile flat structures made from high tenacity polyethylene fibers have been suggested for use in antiballistic clothing. Such clothing is also referred to as "soft ballistic" and it aims to decrease the weight of the body armour while enhancing wear comfort and maintaining or even enhancing impact performance It is an object of the present invention to provide a flexible panel and a process for producing a flexible panel for use in soft antiballistic applications that meets the current aim to decrease the weight of body armour while enhancing wear comfort and maintaining or even enhancing impact performance.
This object is achieved by a flexible panel comprising a plurality of individual laminates, the laminates being built of at least two monolayers of polymeric tapes bonded together, the direction of the polymeric tapes being the same in every monolayer and the polymeric tapes of each monolayer are offset to the tapes of the adjoining monolayer, characterised in that the laminates are stacked on top of each other and secured to each other by separated bonding points or bonding lines.
The object of the present invention is also achieved by a process for producing a flexible panel comprising a plurality of individual laminates, the laminates being built of at least two monolayers of polymeric tapes bonded together, the direction of the polymeric tapes being the same in every monolayer and the polymeric tapes of each monolayer are offset to the tapes of the adjoining monolayer, characterised in that the laminates are being stacked on top of another and being secured to each other by separated bonding points or bonding lines.
Due to the separated bonding points or bonding lines the panel will remain very flexible as opposed to panels being bonded over the whole surface area. The panels take up the impact energy to which they are subjected with a high level of energy absorption.
The bonding points or bonding lines may be located at the edges of the panel. Preferably the bonding points or bonding lines are located in the middle of the panel. It is, however, more preferred that the bonding points or lines that secure the stacked laminates to each other are not aligned in adjacent laminates. The location of the bonding points or lines of two laminates are therefore offset to the bonding points or lines of those laminates adjacent the two laminates. Thus, a highly flexible panel can be obtained that, when it is subjected to bending, shows reduced crinkling of those laminates subjected to the smaller, i.e. the inner bending radius. In a preferred embodiment of the panel according to the invention the laminates are secured to adjacent laminates in an alternating manner of bonding points or lines in the middle of the laminate and at the edges of the laminate.
The laminates may be secured to each other by a thread e.g. by sewing or knitting.
As an alternative the laminates may be secured to each other by rivets, preferably rivets made from a polymeric material.
The laminates may also be secured to each other by a welded joint. Welding may be carried out by ultrasonic welding or laser welding.
The panel according to the present invention may be used as insert in antiballistic protective vests. It is however preferred that the panels are in such a shape so that formfitting soft body armour i.e. soft antiballistic vests may be formed from the panels.
In outer appearance, the body armour can be fashioned after body armours of the prior art, e.g. in the form of a vest or a jacket. The individual laminates that are comprised within the panels according to the invention may have a thickness between 10μm and 1500μm, preferably between 50μm and 1500μm, more preferably between 50μm and 1000μm, and most preferably between 50μm and 500μm.
In a preferred embodiment the panels comprises at least 2, preferably at least 4 individual laminates that are stacked on top of each other, more preferably at least 10 individual laminates and most preferably at least 50 individual laminates. The panel according to the invention may comprise 100 or up to 500 individual laminates.
In the prior art polymeric tapes have only been used for rigid ballistic materials so called hard ballistic applications. For instance US 5,578,370 discloses an impact resistant panel suitable for antiballistic protection. Such a panel is formed of a stack of two or more superimposed mats of intersecting elongate elements. The stack of two or more superimposed mats is consolidated by heating the stack to form a multilayered sheet, i.e. a panel.
The tapes building the laminates that are comprised within the panels are arranged in a parallel, i.e. side by side relationship and the direction of the tapes is the same in every monolayer. The monolayers of the laminates are not cross-plied at an angle with respect to each other. The number of tapes per monolayer may be e.g. up to 10, up to 100, up to 1000 but also up to 10.000 or more. The monolayers are so stacked that the tapes of each layer are offset to the tapes of the adjoining monolayer above or below that layer. Thus, the joints between adjacent tapes of one monolayer are covered by the tapes of the adjoining monolayer above or below that layer. The tapes may be arranged parallel to each other with each polymeric tape of one monolayer having an overlap with the polymeric tape that is positioned adjacent thereto. The polymeric tapes used in the process according to the invention may be spun monofilaments. The term monofilament as used herein encompasses any single filament spun individually, e.g. by melt spinning or gel spinning.
Tapes could also be made in a solid state extrusion (SSE) or skived from solid material followed by post drawing.
The polymeric tapes used in the process according to the invention may also be prepared by cutting or slitting a polymer film. The polymer film may be calendered, drawn or even overdrawn to achieve the necessary tensile strength.
The laminates may be produced by forming a first monolayer of polymeric tapes by pre-tensioning the polymeric tapes and subsequently positioning the polymeric tapes under tension in a unidirectional, parallel manner, forming at least a second monolayer over the first monolayer in the same manner the first monolayer is formed, thereby -stacking the at least two monolayers of polymeric tapes in such a way that the direction of the polymeric tapes is the same in every monolayer and that the polymeric tapes of each monolayer are offset to the tapes of the adjoining monolayer above or below that monolayer and consolidating the thus stacked monolayers of polymeric tapes to obtain a laminate.
It should be noted that the laminate may comprise more than 2, e.g. 3, 4 or up to 25, even up to 50 or up to 100 monolayers of polymeric tapes all stacked in such a way that the direction of the polymeric tapes is the same in every monolayer and that the polymeric tapes of each monolayer are offset to the tapes of the adjoining monolayer above or below that monolayer. Consolidation of the stacked monolayers that form the laminate is carried out in a manner known to the person skilled in the art preferably by applying pressure and heat to the stacked monolayers, e.g. by thermocalendering.
It is preferred that the tapes used for a process according to the present invention have a tensile strength of at least 200 MPa, more preferably the polymeric tapes have a tensile strength of at least 400 MPa. Depending on the polymeric material and the draw ratio the polymeric tapes may exhibit a tensile strength of at least 800 MPa and up to 20 GPa.
The tensile strength of the polymeric tapes is measured in accordance with ASTM D638.
The tapes may be selected from the group consisting of polyethylene, ultra high molecular weight polyethylene, polypropylene, polyamide, polybutadiene terephthalate and polyethylene terephthalate, polyethylene naphtalate, polyvinyl alcohol, polyphenylidensulfide, copolymers of these polymers and mixtures thereof.
Preferably the tapes are meltbonded with a thermoplastic resin material. This material may be applied to the tapes after forming the tape, it may be melt spun with the tapes as sheath material or it may be applied to a polymeric film before slitting it into tapes. Another possibility of applying the thermoplastic resin material is that a substrate layer of the resin material is placed between the monolayers building the laminate. Suitable resin material may be selected from the group consisting of polyethylene, ultra high molecular weight polyethylene, polypropylene, polyamide, polybutadiene terephthalate and polyethylene terephthalate, polyethylene naphtalate, polyvinyl alcohol, polyphenylidensulfide, copolymers of these polymers and mixtures thereof. In addition ethylene alkyl acrylate copolymer (EAA), ethylene vinyl acetate copolymer (EVA), ethylene-butyl acrylate copolymer (EBA), ethylenemethyl acrylate copolymer (EMA), linear low density polyethylene (LLDPE), high density polyethylenes (HDPE), low density polyethylenes (LPDE) may be used. It is also possible to use polyisobutylene (PIB) or polyurethane (PU) as sheath material. These polymers can be very flexible and may show high elongation. The thermoplastic resin material may comprise one of the listed materials or mixtures of those materials.
Before applying the thermoplastic resin material onto the polymeric tapes a primer may be applied on the tape surface as an adhesion promoter. Such a surface treatment enhances bonding between tape and thermoplastic resin material. A suitable primer may be e.g. chlorinated polypropylene. An additional effect of a primer is less fibrillating of the tapes in the subsequent processing steps. Other surface treatments that can be used to enhance bonding include plasma or corona treatment.
As an alternative to meltbonding the polymeric tapes forming the at least two monolayers of the individual laminates may also be bonded by a pressure sensitive adhesive.
Polymeric tapes comprising only one polymeric material may also be consolidated without any additional resin material or adhesive. The monolayers are in this case consolidated at a temperature range just below the melting temperature of the polymeric tapes. Such a method is known in the art as "hot compaction".
The term tape as used in the context of the present invention means flexible, elongate elements of essentially uniform width and thickness that can have any shape except a circular shape. The width/height ratio of the tapes is at least 2, preferably at least 5 and more preferably at least 20. Said tapes can be positioned in a side by side relationship with lateral sides of adjacent tapes being essentially parallel. The tapes may be derived from a slit film. The tapes may also be monofilaments. The tapes used in the process according to the present invention may have various cross sections e.g. quadrangular cross section or triangular cross section.
In order to obtain laminates with the required tensile strength it is preferred that the polymeric tapes are drawn with a draw ratio of at least 1 :5, more preferably the polymeric tapes are drawn with a draw ratio of at least 1 :15. Draw ratios of 1 :50 or more are especially preferred.
Quadrangular tapes that are monofilaments may preferably be 1 ,5mm to 10mm in width and 20μm to 1500μm thick. Quadrangular tapes made by slitting a film may be 2mm to 300mm wide and 1 μm to 1000μm, preferably 4μm to 50μm thick. Tapes with triangular cross section may be 2 to 10mm in width and thickness.
The laminates used for the panels or for the process for producing a panel may be placed on top of another in such a way that the polymeric tapes building the laminates all lie in the same direction. In a preferred embodiment at least one of the laminates placed on top of another is turned relative to the adjoining laminate placed above or below that laminate, more preferably at least one of the laminates is turned by 90° relative to the adjoining laminate placed above or below that laminate thus obtaining higher tensile strength in transverse direction of the panel. The laminates may also be stacked in an alternating manner of 0° and 90°. The panel may comprise an identical number of laminates with 0° and turned by 90°. It is, however, also sufficient if only the top and bottom laminate are being turned by 90° relative to the other laminates.
Yet another object of the present invention is to provide a special use of such a panel.
The panels according to the present invention may be used to form airbags. As indicated the panels according to the present invention are especially suited for antiballistic protective clothing. The panels may be used in soft body armour applications also called soft ballistics.
In order to prevent the so called traumatic effect it is in particular preferable if the present panel is provided with a shock absorber on the body side of the body armour.
The panels according to the present invention may also be provided with one or more stab resistant layers or laminates. The stab resistant layers or laminates may be provided on one or on both surface sides. The stab resistant layers or laminates may also be sandwiched between individual laminates even in an alternating manner of laminates according to the invention and stab resistant layers or laminates.
The panels according to the present invention may also be provided with one or more layers of aramid fibres or ultrahigh molecular weight polyethylene. These layers enhance the antiballistic performance of the panel and they may be provided on one or on both surface sides. The layers of aramid fibres or ultrahigh molecular weight polyethylene may also be sandwiched between individual laminates even in an alternating manner of laminates according to the invention and layers of aramid fibres or ultrahigh molecular weight polyethylene. Aramid layers are preferably sandwiched between individual laminates to prevent fraying of the aramid fibres.

Claims

Process for producing flexible panels comprising laminates of unidirectionally arranged polymeric tapesClaims:
1. A flexible panel comprising a plurality of individual laminates, the laminates being built of at least two monolayers of unidirectionally arranged polymeric tapes bonded together, the direction of the polymeric tapes being the same in every monolayer and the polymeric tapes of each monolayer are offset to the tapes of the adjoining monolayer, characterised in that the laminates are stacked on top of each other and secured to each other by separated bonding points or bonding lines.
2. A panel according to claim 1 , characterised in that laminates are secured to each other by a thread.
3. A panel according to claim 1 , characterised in that laminates are secured to each other by rivets.
4. A panel according to claim 1 , characterised in that the laminates are secured to each other by a welded joint.
5. A panel according to any one of claims 1 to 4, characterised in that the panel is provided with one or more layers of aramid fibres.
6. A panel according to any one of claims 1 to 4, characterised in that the panel is provided with one or more layers of ultrahigh molecular weight polyethylene.
7. Use of a panel according to any one of claims 1 to 6 for antiballistic protective clothing.
PCT/EP2007/008500 2006-10-05 2007-09-29 Process for producing flexible panels comprising laminates of unidirectionally arranged polymeric tapes WO2008040511A1 (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
JP2009530791A JP2010505647A (en) 2006-10-05 2007-09-29 Method for manufacturing a flexible panel having a laminate of unidirectionally oriented polymer tapes
US12/311,316 US7814568B2 (en) 2006-10-05 2007-09-29 Process for producing flexible panels comprising laminates of unidirectionally arranged polymeric tapes
AT07818580T ATE462558T1 (en) 2006-10-05 2007-09-29 METHOD FOR PRODUCING FLEXIBLE PANELS COMPRISING LAMINATES FROM UNIDIRECTIONALLY ARRANGED POLYMERIC TAPES
AU2007304496A AU2007304496B2 (en) 2006-10-05 2007-09-29 Process for producing flexible panels comprising laminates of unidirectionally arranged polymeric tapes
CA002665466A CA2665466A1 (en) 2006-10-05 2007-09-29 Process for producing flexible panels comprising laminates of unidirectionally arranged polymeric tapes
MX2009003675A MX2009003675A (en) 2006-10-05 2007-09-29 Process for producing flexible panels comprising laminates of unidirectionally arranged polymeric tapes.
PL07818580T PL2079579T3 (en) 2006-10-05 2007-09-29 Process for producing flexible panels comprising laminates of unidirectionally arranged polymeric tapes
DK07818580.8T DK2079579T3 (en) 2006-10-05 2007-09-29 Method of producing flexible panels comprising laminates of unidirectional arranged polymeric strips
SI200730248T SI2079579T1 (en) 2006-10-05 2007-09-29 Process for producing flexible panels comprising laminates of unidirectionally arranged polymeric tapes
BRPI0717297-4A2A BRPI0717297A2 (en) 2006-10-05 2007-09-29 FLEXIBLE PANEL AND USING A PANEL
EP07818580A EP2079579B1 (en) 2006-10-05 2007-09-29 Process for producing flexible panels comprising laminates of unidirectionally arranged polymeric tapes
DE602007005674T DE602007005674D1 (en) 2006-10-05 2007-09-29 METHOD FOR PRODUCING FLEXIBLE PLATES COMPRISING LAMINATES OF UNIDIRECTIONALLY ARRANGED POLYMERIC BELTS
IL197911A IL197911A0 (en) 2006-10-05 2009-04-05 Process for producing flexible panels comprising laminates of unidirectionally arranged polymeric tapes
NO20091755A NO20091755L (en) 2006-10-05 2009-05-04 Process for producing flexible panels including laminates of unidirectional arranged polymeric tapes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06020902.0 2006-10-05
EP06020902A EP1908580A1 (en) 2006-10-05 2006-10-05 Process for producing flexible panels comprising laminates of unidirectionally arranged polymeric tapes

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WO2008040511A1 true WO2008040511A1 (en) 2008-04-10

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EP (2) EP1908580A1 (en)
JP (1) JP2010505647A (en)
KR (1) KR20090058545A (en)
CN (1) CN101528453A (en)
AT (1) ATE462558T1 (en)
AU (1) AU2007304496B2 (en)
BR (1) BRPI0717297A2 (en)
CA (1) CA2665466A1 (en)
CY (1) CY1110206T1 (en)
DE (1) DE602007005674D1 (en)
DK (1) DK2079579T3 (en)
ES (1) ES2340095T3 (en)
IL (1) IL197911A0 (en)
MX (1) MX2009003675A (en)
MY (1) MY147328A (en)
NO (1) NO20091755L (en)
PL (1) PL2079579T3 (en)
PT (1) PT2079579E (en)
RU (1) RU2440245C2 (en)
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009135828A1 (en) * 2008-05-05 2009-11-12 Novameer B.V. Polymeric fibers coated with an olefin block copolymer containing resin and laminates comprising polymeric fibers in a resin of olefin block copolymers
US20110117352A1 (en) * 2009-10-28 2011-05-19 Shalaby Shalaby W Self-primed fabric in self-reinforced polyethylene composites
US7964261B2 (en) 2007-10-09 2011-06-21 Novameer B.V. Advanced antiballistic materials
WO2012072780A1 (en) 2010-12-03 2012-06-07 Teijin Aramid B.V. High molecular weight polyethylene
US8211268B1 (en) 2009-03-20 2012-07-03 Milliken & Company Tie layer compositions for fiber reinforced thermoplastic—thermoset structural element
EP3056330A1 (en) 2015-02-16 2016-08-17 Teijin Aramid B.V. Panels made from cylindrical hollow articles
WO2016145499A1 (en) * 2015-03-16 2016-09-22 Bertin André Nestor Self-adhesive ballistic panel

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA019783B1 (en) † 2008-04-29 2014-06-30 ДСМ АйПи АССЕТС Б.В. Stack of first and second layers, a panel and a ballistic resistant article comprising the stack or panel
US9157173B2 (en) 2008-08-07 2015-10-13 Invista North America S.A.R.L. Process of making a woven fabric for vehicle airbags
DE102013017450A1 (en) * 2013-10-22 2015-04-23 Airbus Defence and Space GmbH Process for the production of fiber composite semi-finished products
KR102503550B1 (en) * 2021-08-31 2023-02-24 이상옥 Stab―resistant fabricand its manufacturing method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1387701A (en) * 1971-09-25 1975-03-19 Nippon Petrochemicals Co Ltd Plastics tapes
US5578370A (en) * 1990-02-02 1996-11-26 Don & Low (Holdings) Limited Molecularly interspersed thermoplastic composite mat

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR890701976A (en) * 1987-08-03 1989-12-22 로이 에이취.멧신길 Shock resistant helmet
US5185195A (en) * 1990-11-19 1993-02-09 Allied-Signal Inc. Constructions having improved penetration resistance
WO1994019660A1 (en) * 1993-02-16 1994-09-01 Alliedsignal Inc. Composites having improved penetration resistance
JPH0849998A (en) * 1994-08-05 1996-02-20 Nippon Petrochem Co Ltd Impact resisting sheet comprising high strength uniaxially oriented body and its production
DE19802135B4 (en) * 1997-07-26 2009-10-15 Horst Bräuer Flat structures, in particular textile fabrics
US6127291A (en) * 1997-10-20 2000-10-03 Coppage, Jr.; Edward A. Anti-ballistic protective composite fabric
JPH11156986A (en) * 1997-11-25 1999-06-15 Nippon Petrochem Co Ltd Flat reticular body and manufacture thereof
US6786126B2 (en) * 2001-02-05 2004-09-07 Wayne B. Sargent Ballistic resistant materials and method of manufacture
JP2003053913A (en) * 2001-08-13 2003-02-26 Diatex Co Ltd Reinforced synthetic resin sheet
US6841492B2 (en) * 2002-06-07 2005-01-11 Honeywell International Inc. Bi-directional and multi-axial fabrics and fabric composites
IL203401A (en) * 2004-08-16 2013-03-24 Yuval Fuchs Methods of preparation of monolayers and bilayers comprising ultra high molecular weight polyethylene and ballistic resistant articles manufactured therefrom
EP2711661B1 (en) * 2006-04-26 2018-10-10 DSM IP Assets B.V. Multilayered material sheet and process for its preparation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1387701A (en) * 1971-09-25 1975-03-19 Nippon Petrochemicals Co Ltd Plastics tapes
US5578370A (en) * 1990-02-02 1996-11-26 Don & Low (Holdings) Limited Molecularly interspersed thermoplastic composite mat

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7964261B2 (en) 2007-10-09 2011-06-21 Novameer B.V. Advanced antiballistic materials
WO2009135828A1 (en) * 2008-05-05 2009-11-12 Novameer B.V. Polymeric fibers coated with an olefin block copolymer containing resin and laminates comprising polymeric fibers in a resin of olefin block copolymers
US8679614B2 (en) 2008-05-05 2014-03-25 Novameer B.V. Polymeric fibers coated with an olefin block copolymer containing resin and laminates comprising polymeric fibers in a resin of olefin block copolymers
US8211268B1 (en) 2009-03-20 2012-07-03 Milliken & Company Tie layer compositions for fiber reinforced thermoplastic—thermoset structural element
US20110117352A1 (en) * 2009-10-28 2011-05-19 Shalaby Shalaby W Self-primed fabric in self-reinforced polyethylene composites
WO2012072780A1 (en) 2010-12-03 2012-06-07 Teijin Aramid B.V. High molecular weight polyethylene
US9428594B2 (en) 2010-12-03 2016-08-30 Teijin Aramid B.V. High molecular weight polyethylene
EP3056330A1 (en) 2015-02-16 2016-08-17 Teijin Aramid B.V. Panels made from cylindrical hollow articles
WO2016145499A1 (en) * 2015-03-16 2016-09-22 Bertin André Nestor Self-adhesive ballistic panel

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CN101528453A (en) 2009-09-09
AU2007304496B2 (en) 2011-10-27
JP2010505647A (en) 2010-02-25
RU2009116920A (en) 2010-11-10
US20090265826A1 (en) 2009-10-29
MX2009003675A (en) 2009-04-23
AU2007304496A1 (en) 2008-04-10
EP1908580A1 (en) 2008-04-09
MY147328A (en) 2012-11-30
DE602007005674D1 (en) 2010-05-12
EP2079579A1 (en) 2009-07-22
EP2079579B1 (en) 2010-03-31
ZA200902310B (en) 2010-03-31
PL2079579T3 (en) 2010-08-31
DK2079579T3 (en) 2010-05-31
US7814568B2 (en) 2010-10-19
CA2665466A1 (en) 2008-04-10
CY1110206T1 (en) 2015-01-14
NO20091755L (en) 2009-06-25
IL197911A0 (en) 2009-12-24
ES2340095T3 (en) 2010-05-28
ATE462558T1 (en) 2010-04-15
SI2079579T1 (en) 2010-07-30
BRPI0717297A2 (en) 2014-04-08
PT2079579E (en) 2010-04-16
RU2440245C2 (en) 2012-01-20
KR20090058545A (en) 2009-06-09

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