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US3719545A - Reinforced laminated material - Google Patents

Reinforced laminated material Download PDF

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Publication number
US3719545A
US3719545A US00124079A US3719545DA US3719545A US 3719545 A US3719545 A US 3719545A US 00124079 A US00124079 A US 00124079A US 3719545D A US3719545D A US 3719545DA US 3719545 A US3719545 A US 3719545A
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US
United States
Prior art keywords
armor
laminate
layers
densified
personnel
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.)
Expired - Lifetime
Application number
US00124079A
Inventor
H Lawler
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.)
CA ACQUISITION Co CHICAGO ILL A CORP OF
Original Assignee
Carborundum Co
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Publication of US3719545A publication Critical patent/US3719545A/en
Assigned to KENNECOTT CORPORATION reassignment KENNECOTT CORPORATION MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE DEC. 31, 1980 NORTH DAKOTA Assignors: BEAR CREEK MINING COMPANY, BEAR TOOTH MINING COMPANY, CARBORUNDUM COMPANY THE, CHASE BRASS & COPPER CO. INCORPORATED, KENNECOTT EXPLORATION, INC., KENNECOTT REFINING CORPORATION, KENNECOTT SALES CORPORATION, OZARK LEAD COMPANY, PLAMBEAU MINING CORPORATION, RIDGE MINING CORPORATION (ALL MERGED INTO)
Assigned to CA ACQUISITION CO., CHICAGO, ILL. A CORP. OF DE reassignment CA ACQUISITION CO., CHICAGO, ILL. A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KENNECOTT CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/024—Woven fabric
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0471—Layered armour containing fibre- or fabric-reinforced layers
    • F41H5/0485—Layered armour containing fibre- or fabric-reinforced layers all the layers being only fibre- or fabric-reinforced 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • 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
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/02—Temperature
    • B32B2309/022—Temperature vs pressure profiles
    • 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
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene
    • 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 or 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.]
    • Y10T428/24033—Structurally defined web or sheet [e.g., overall dimension, etc.] including stitching and discrete fastener[s], coating or bond
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31909—Next to second addition polymer from unsaturated monomers
    • Y10T428/31924—Including polyene monomers

Definitions

  • ABSTRACT I A laminated material made up of densitied layers of [52] US. Cl. —I toast;';.;';;;....161/50, 156/85, 156/93,
  • the force of the projectile may cause excessive separation of the laminations, weakening the inner structure of the armor and greatly reducing its effectiveness, particularly on subsequent impacts. It is therefore an object of this invention to provide a reinforced material which will resist delamination when struck by a projectile, the material then functions to absorb and dissipate the projectile energy.
  • Another object of this invention is to provide a reinforced material that will retain its strength while being shaped into forms suitable as a backing for contoured personnel armor.
  • a further object of this invention is to provide a reinforced material that may be used without an armor facing for protection against lesser ballistic threats such as fragmentation projectiles.
  • the invention provides a laminated material comprised of multiple layers of film or fabric and stitched together in a suitable pattern with a reinforcing filament.
  • the reinforcing stitching strengthens the laminate layers, enabling them to resist separation when struck by projectiles or projectile fragments.
  • the reinforced layers are then heated and compressed to form a densified rigid laminate which may be shaped to form a projectile resistant backing for personnel armor.
  • FIG. 1 shows a perspective view of a piece of the laminated material of this invention, prior to heating and compression into the densified form.
  • FIG. 2 is a sectional view of the same piece, taken along the lines 2-2 of FIG. 1.
  • FIG. 3 is a sectional view of a piece of personnel armor showing the attachment of the densified laminate to the back of the armor facing.
  • FIG. I A preferred embodiment of the laminated material of this invention is shown in FIG. I.
  • the laminate is formed from multiple layers of a fabric woven from polypropylene filaments 10.
  • the cloth layers are then stitched together, using a heat shrinkable filament 11, such as cold oriented polyethylene. Stitching is preferably done in a quilting pattern, but may also be done only around the periphery of the material or in one or more spots with a button stitch.
  • the relatively flexible laminate is compressed under a pressure of 600 psi while being heated to 250 F for a period of one hour.
  • a hard, rigid laminate is formed in which the layers are held together primarily by the stitching which runs essentially perpendicular to the layers and which is compressed into the structure. Simultaneously with this compression, the laminate is shaped to fit the contours of the armor facing.
  • a seetional view of a piece of personnel armor is shown in FIG. 3, in which the densified laminate 13 is shown attached to the armor facing 12. The laminate is bonded to the back Of/the armor facing by means of a layer of polyurethane or polysulfide adhesive 14.
  • the material of the invention is used primarily as a relatively lightweight backing to lend strength and limited resilience to contoured personnel armor.
  • the material is preferably formed from films or woven fabrics of heat softenable polymeric materials such as polypropylene, polyethylene, polytetrafluoroethylene, polyamide or polyvinylchloride.
  • flexible and resilient materials such as non-woven webs, polymeric films, or non-woven fabrics of natural or synthetic fibers may also be employed.
  • Other types of materials may be resin impregnated fabrics, woven or non-woven made from inorganic fibers such as glass or aluminum silicate or from natural or synthetic fibers which are not heat softenable.
  • the reinforcing filaments used for stitching may comprise any one of the natural or synthetic fibers or blends. Cold-oriented filaments which contract upon heating are preferred. Such filaments provide a stronger reinforcement when the stitched laminate is densified under heat and pressure.
  • Metallic fibers are suitable for reinforcement stitching, as well as filaments consisting of blends of synthetic or natural fibers reinforced with metallic fibers.
  • While the material of this invention is preferably formed under a pressure of 600 psi and a temperature of 250F for a period of one hour, variations in processing conditions may require pressures ranging from 100 to 1,000 psi, with temperatures ranging from 200 to 300F and time periods ranging from 30 minutes up to 2 hours.
  • the materials according to the present invention are primarily employed as a backing material for personnel armor which may be worn by police or like personnel engaged in hazardous situations.
  • the materials may also be used without an armor facing for protection against lesser ballistic threats, such as those caused by various fragmentation devices.
  • the materials are also suitable as backing to metallic or refractory facing for the enclosure of dangerous industrial operations which present an explosion hazard.
  • Personnel armor comprising a high strength projectile resistant material and a flexible laminated d shaping the densified laminate to fit a contoured piece of armor facing; and e. bonding the shaped laminate to the back of the armor facing. 4. A method for making personnel armor according to claim 3 in which the step of densifying the laminate includes heating to temperatures ranging from 200 to 300 F and compressing under pressures ranging from to 1,000 psi.

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Laminated Bodies (AREA)

Abstract

A laminated material made up of densified layers of flexible material such as films or fabrics. The flexible layers are stitched together with reinforcing filaments and then densified under heat and pressure to form a compressed rigid laminate which is suitable as a backing for personnel armor.

Description

[ 1 March 6, 1973 United States Patent [191 Lawler [56] References Cited REINFORCED LAMINATED UNITED STATES PATENTS MATERIAL [75] Inventor:
Harry A. Lawler, Youngstown, NY.
The
2,640,004 Van Saun...............................161/50 2,243,857
6/1941 Fischer................. 2,514,412 7/1950 Assignee: Carborundum Company,
Niagara Falls, NY.
March 15, 1971 [21] Appl. No.: 124,079
Primary Examiner-Douglas J. Drummond [22] Filed:
ABSTRACT I A laminated material made up of densitied layers of [52] US. Cl. ......I......;';.;';;;....161/50, 156/85, 156/93,
161/216 rB32b 3/06, B32b 7/08 161/50, 216; 156/93, 84, 85
flexible material such as films or fabrics. The flexible layers are stitched together with reinforcing fil aments [58] Field of Search and then densified under heat and pressure to form a compressed rigid laminate which is suitable as a backing for personnel armor.
4 Claims, 3 Drawing Figures PATENTED 5 I973 FIG. 2
INVENTOR RY A. LAW
HAR ;@Q fiw 6 wwtw REINFORCED LAMINATED MATERIAL BACKGROUND OF THE INVENTION During the past few years, the use of armor for body protection during hazardous situations has increased. This has brought about a need for lightweight protective armor which has been manufactured from high strength metals or hard ceramic materials such as aluminum oxide or carbides of boron or silicon. These materials have generally been effective, when employed in conjunction with suitable backing materials which retard projectile fragment penetration by deformation or controlled delamination of the backing layer. The hardfacing material of the armor absorbs the initial shock of a projectile and fragments the core, however, penetration may still take place. The function of the backing material is to absorb the remainder of the projectile energy with minimum harm to the wearer of the armor. If the backing is a laminated material, the force of the projectile may cause excessive separation of the laminations, weakening the inner structure of the armor and greatly reducing its effectiveness, particularly on subsequent impacts. It is therefore an object of this invention to provide a reinforced material which will resist delamination when struck by a projectile, the material then functions to absorb and dissipate the projectile energy.
Another object of this invention is to provide a reinforced material that will retain its strength while being shaped into forms suitable as a backing for contoured personnel armor.
A further object of this invention is to provide a reinforced material that may be used without an armor facing for protection against lesser ballistic threats such as fragmentation projectiles.
SUMMARY OF THE INVENTION Briefly, the invention provides a laminated material comprised of multiple layers of film or fabric and stitched together in a suitable pattern with a reinforcing filament. The reinforcing stitching strengthens the laminate layers, enabling them to resist separation when struck by projectiles or projectile fragments. The reinforced layers are then heated and compressed to form a densified rigid laminate which may be shaped to form a projectile resistant backing for personnel armor.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a perspective view of a piece of the laminated material of this invention, prior to heating and compression into the densified form.
FIG. 2 is a sectional view of the same piece, taken along the lines 2-2 of FIG. 1.
FIG. 3 is a sectional view of a piece of personnel armor showing the attachment of the densified laminate to the back of the armor facing.
DESCRIPTION OF PREFERRED EMBODIMENTS A preferred embodiment of the laminated material of this invention is shown in FIG. I. The laminate is formed from multiple layers of a fabric woven from polypropylene filaments 10. The cloth layers are then stitched together, using a heat shrinkable filament 11, such as cold oriented polyethylene. Stitching is preferably done in a quilting pattern, but may also be done only around the periphery of the material or in one or more spots with a button stitch. Subsequent to stitching, the relatively flexible laminate is compressed under a pressure of 600 psi while being heated to 250 F for a period of one hour. A hard, rigid laminate is formed in which the layers are held together primarily by the stitching which runs essentially perpendicular to the layers and which is compressed into the structure. Simultaneously with this compression, the laminate is shaped to fit the contours of the armor facing. A seetional view of a piece of personnel armor is shown in FIG. 3, in which the densified laminate 13 is shown attached to the armor facing 12. The laminate is bonded to the back Of/the armor facing by means of a layer of polyurethane or polysulfide adhesive 14.
The material of the invention is used primarily as a relatively lightweight backing to lend strength and limited resilience to contoured personnel armor. The material is preferably formed from films or woven fabrics of heat softenable polymeric materials such as polypropylene, polyethylene, polytetrafluoroethylene, polyamide or polyvinylchloride. However, flexible and resilient materials such as non-woven webs, polymeric films, or non-woven fabrics of natural or synthetic fibers may also be employed. Other types of materials may be resin impregnated fabrics, woven or non-woven made from inorganic fibers such as glass or aluminum silicate or from natural or synthetic fibers which are not heat softenable.
The reinforcing filaments used for stitching may comprise any one of the natural or synthetic fibers or blends. Cold-oriented filaments which contract upon heating are preferred. Such filaments provide a stronger reinforcement when the stitched laminate is densified under heat and pressure. Metallic fibers are suitable for reinforcement stitching, as well as filaments consisting of blends of synthetic or natural fibers reinforced with metallic fibers.
While the material of this invention is preferably formed under a pressure of 600 psi and a temperature of 250F for a period of one hour, variations in processing conditions may require pressures ranging from 100 to 1,000 psi, with temperatures ranging from 200 to 300F and time periods ranging from 30 minutes up to 2 hours.
The materials according to the present invention are primarily employed as a backing material for personnel armor which may be worn by police or like personnel engaged in hazardous situations. The materials may also be used without an armor facing for protection against lesser ballistic threats, such as those caused by various fragmentation devices. The materials are also suitable as backing to metallic or refractory facing for the enclosure of dangerous industrial operations which present an explosion hazard.
It is to be understood that many equivalent modifications will be apparent to those skilled in the art from the reading of the foregoing disclosure, without a departure from the intended concept of the invention.
What is claimed is:
1. Personnel armor comprising a high strength projectile resistant material and a flexible laminated d shaping the densified laminate to fit a contoured piece of armor facing; and e. bonding the shaped laminate to the back of the armor facing. 4. A method for making personnel armor according to claim 3 in which the step of densifying the laminate includes heating to temperatures ranging from 200 to 300 F and compressing under pressures ranging from to 1,000 psi.

Claims (3)

1. Personnel armor comprising a high strength projectile resistant material and a flexible laminated material bonded to said projectile resistant material, said laminated material comprising a plurality of densified layers of flexible polymeric material and a heat shrunk filament stitching said layers together.
2. Personnel armor according to claim 1 in which the said flexible polymeric material is polypropylene.
3. A method for making personnel armor which comprises: a. forming a laminate from at least two layers of fabric woven from polypropylene filaments; b. stitching the fabric layers together with a heat shrinkable filament; c. densifying the laminate and shrinking the filament by applying heat and pressure; d. shaping the densified laminate to fit a contoured piece of armor facing; and e. bonding the shaped laminate to the back of the armor facing.
US00124079A 1971-03-15 1971-03-15 Reinforced laminated material Expired - Lifetime US3719545A (en)

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079161A (en) * 1974-07-12 1978-03-14 Phillips Petroleum Company Transparent oriented polyolefin laminated armor structure
EP0089537A1 (en) * 1982-03-19 1983-09-28 Allied Corporation Improved ballistic-resistant article
US4678702A (en) * 1986-07-30 1987-07-07 Petro Products, Inc. Protective laminate
US4786343A (en) * 1985-05-10 1988-11-22 The Boeing Company Method of making delamination resistant composites
EP0320715A2 (en) * 1987-12-15 1989-06-21 MEHLER VARIO SYSTEM GmbH Process for the production of a light-weight sandwiched building material
US4966802A (en) * 1985-05-10 1990-10-30 The Boeing Company Composites made of fiber reinforced resin elements joined by adhesive
US5437905A (en) * 1994-05-17 1995-08-01 Park; Andrew D. Ballistic laminate structure in sheet form
US5935678A (en) * 1994-05-17 1999-08-10 Park; Andrew D. Ballistic laminate structure in sheet form
US5952078A (en) * 1994-05-17 1999-09-14 Park; Andrew D. Athletic guard including energy absorbing laminate structure
US6408733B1 (en) * 2000-02-14 2002-06-25 William J. Perciballi Ceramic armor apparatus for multiple bullet protection
US20030236047A1 (en) * 2002-06-13 2003-12-25 Texas Tech University Chemical protective composite substrate and method of producing same
US20040216595A1 (en) * 2003-03-17 2004-11-04 Dickson Lawrence J. Formed metal armor assembly
US20050101211A1 (en) * 2002-06-13 2005-05-12 Texas Tech University Chemical protective composite substrate and method of producing same
US20050268443A1 (en) * 2002-06-13 2005-12-08 Texas Tech University Process for making chemical protective wipes and such wipes
US20060191237A1 (en) * 2004-05-10 2006-08-31 Hansen Daniel R Drywall repair patch
US20110185463A1 (en) * 2010-01-29 2011-08-04 Safariland, Llc Soft Body Armor Including Reinforcing Strips
US20160289869A1 (en) * 2013-11-14 2016-10-06 Barrday Inc. Woven multi-layer fabrics for use with non-ballistic threats
US20190375201A1 (en) * 2018-06-06 2019-12-12 E I Du Pont De Nemours And Company Conformable polyethylene fabric and articles made therefrom
US20190375202A1 (en) * 2018-06-06 2019-12-12 E I Du Pont De Nemours And Company Conformable polyethylene fabric and articles made therefrom
US11535959B2 (en) 2009-10-02 2022-12-27 Barrday, Inc. Woven multi-layer fabrics and methods of fabricating same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2243857A (en) * 1936-02-26 1941-06-03 Albert C Fischer Fiber articles, such as mats and the like
US2514412A (en) * 1944-06-30 1950-07-11 Robert S Owens Stitched sheet product
US2640004A (en) * 1949-08-16 1953-05-26 Janesville Cotton Mills Strip insulation and method of manufacture

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2243857A (en) * 1936-02-26 1941-06-03 Albert C Fischer Fiber articles, such as mats and the like
US2514412A (en) * 1944-06-30 1950-07-11 Robert S Owens Stitched sheet product
US2640004A (en) * 1949-08-16 1953-05-26 Janesville Cotton Mills Strip insulation and method of manufacture

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079161A (en) * 1974-07-12 1978-03-14 Phillips Petroleum Company Transparent oriented polyolefin laminated armor structure
EP0089537A1 (en) * 1982-03-19 1983-09-28 Allied Corporation Improved ballistic-resistant article
JPS58180635A (en) * 1982-03-19 1983-10-22 アライド・コ−ポレ−シヨン ballistic resistant articles
US4786343A (en) * 1985-05-10 1988-11-22 The Boeing Company Method of making delamination resistant composites
US4966802A (en) * 1985-05-10 1990-10-30 The Boeing Company Composites made of fiber reinforced resin elements joined by adhesive
US4678702A (en) * 1986-07-30 1987-07-07 Petro Products, Inc. Protective laminate
EP0320715A2 (en) * 1987-12-15 1989-06-21 MEHLER VARIO SYSTEM GmbH Process for the production of a light-weight sandwiched building material
US4971642A (en) * 1987-12-15 1990-11-20 Mehler Vario System Gmbh Method of making a sandwich lightweight construction material
EP0320715A3 (en) * 1987-12-15 1991-10-16 MEHLER VARIO SYSTEM GmbH Process for the production of a light-weight sandwiched building material
US5952078A (en) * 1994-05-17 1999-09-14 Park; Andrew D. Athletic guard including energy absorbing laminate structure
US5443882A (en) * 1994-05-17 1995-08-22 Park; Andrew D. Armored garment
US5443883A (en) * 1994-05-17 1995-08-22 Park; Andrew D. Ballistic panel
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