# US 11,027,501 B2 · High lap shear strength, low back face signature UD composite and the process of making

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- Number: US 11,027,501 B2
- Document ID: US11027501B2
- Status: Granted
- Kind: B2
- Application number: 16/792,377
- Filed: 2020-02-17
- Published: 2020-10-01
- Granted: 2021-06-08
- Earliest claimed: 2011-09-06
- Assignees: Honeywell International Inc.
- Applicants: Honeywell International Inc.
- Inventors: Thomas Yiu-Tai Tam; Brian Waring; Henry Gerard Ardiff; Bradley Grunden; David A. Hurst; John Armstrong Young; Ralf Klein; Brian Duane Arvidson
- Web page: https://patentgrep.com/patent/US11027501B2

## CPC

- B29C 66/729: {Textile or other fibrous material made from plastics}
- B29B 13/08: by using wave energy or particle radiation
- B29C 65/48: using adhesives {, i.e. using supplementary joining material; solvent bonding}
- B29C 65/4805: {characterised by the type of adhesives}
- B29C 66/7294: {Non woven mats, e.g. felt}
- B32B 5/022: {Non-woven fabric}
- B32B 5/12: characterised by the relative arrangement of fibres or filaments of {different layers, e.g. the fibres or filaments being parallel or perpendicular to each other}
- B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)}
- B32B 27/00: Layered products comprising {a layer of} synthetic resin {(fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18)}
- B32B 27/12: next to a fibrous or filamentary layer
- D03D 1/0052: {Antiballistic fabrics}
- D03D 11/00: Double or multi-ply fabrics not otherwise provided for
- D06M 10/02: Sonic or ultrasonic waves; Corona discharge
- D06M 10/025: {Corona discharge or low temperature plasma}
- D06M 15/00: Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment (D06M10/00, D06M14/00 take precedence; {treatment with inorganic polyphosphates D06M11/72})
- D06M 17/00: Producing multi-layer textile fabrics
- D06M 17/04: by applying synthetic resins as adhesives
- D06M 17/06: Polymers of vinyl compounds
- D06M 17/10: Polyurethanes {polyurea}
- F41H 5/0478: {Fibre- or fabric-reinforced layers in combination with plastics layers}
- F41H 5/0485: {all the layers being only fibre- or fabric-reinforced layers}
- B29K 2101/12: Thermoplastic materials
- B29K 2105/0845: {Woven fabrics}
- B29K 2105/0854: {in the form of a non-woven mat}
- B32B 2260/023: Two or more layers
- B32B 2260/046: Synthetic resin
- B32B 2262/0253: Polyolefin fibres
- B32B 2262/0269: Aromatic polyamide fibres
- B32B 2307/558: Impact strength, toughness
- B32B 2307/58: Cuttability
- B32B 2307/718: Weight, e.g. weight per square meter
- B32B 2307/72: Density
- B32B 2571/02: defensive, e.g. armour plates or anti-ballistic clothing
- Y10T 428/24058: including grain, strips, or filamentary elements in respective layers or components in angular relation
- Y10T 428/24074: Strand or strand-portions
- Y10T 428/24124: Fibers
- Y10T 428/24479: including variation in thickness
- Y10T 428/2495: Thickness [relative or absolute]
- Y10T 428/2913: Rod, strand, filament or fiber
- Y10T 442/659: Including an additional nonwoven fabric
- Y10T 442/671: Multiple nonwoven fabric layers composed of the same polymeric strand or fiber material
- 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 (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B29B: PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- D03D: WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- F41H: ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Fabrication of ballistic resistant fibrous composites having improved ballistic resistance properties. More particularly, ballistic resistant fibrous composites having high interlaminar lap shear strength between component fiber plies or fiber layers, which correlates to low composite backface signature. The high lap shear strength, low backface signature composites are useful for the production of hard armor articles, including helmet armor.

## Claims

### Claim 1

A polymeric fiber having a surface, said surface having a surface area, wherein said fiber surface is partially covered by a fiber surface finish, wherein said fiber surface finish covers from about 1.0% to 50.0% of the fiber surface area, and wherein said fiber has a tenacity of about 7 g/denier or more.

### Claim 2 (depends on 1)

The polymeric fiber of claim 1 wherein said fiber comprises a polyethylene fiber.

### Claim 3 (depends on 1)

The polymeric fiber of claim 1 further comprising a polymeric binder coated on said fiber on top of said fiber surface finish.

### Claim 4 (depends on 1)

The polymeric fiber of claim 1 wherein said fiber surface finish comprises less than or equal to about 0.5% by weight based on the weight of the fiber plus the weight of the finish.

### Claim 5 (depends on 1)

The polymeric fiber of claim 1 wherein said fiber surface finish comprises one or more non-ionic surfactants.

### Claim 6 (depends on 1)

The polymeric fiber of claim 1 wherein said fiber has a tenacity of about 15 g/denier or more.

### Claim 7 (depends on 1)

The polymeric fiber of claim 1 wherein said fiber has a tenacity of about 25 g/denier or more.

### Claim 8 (depends on 1)

The polymeric fiber of claim 1 wherein said fiber has a tenacity of about 30 g/denier or more.

### Claim 9 (depends on 1)

The polymeric fiber of claim 1 wherein said fiber has a tenacity of about 37 g/denier or more.

### Claim 10 (depends on 1)

The polymeric fiber of claim 1 wherein said fiber has a tenacity of about 40 g/denier or more.

### Claim 11 (depends on 1)

The polymeric fiber of claim 1 wherein said fiber has a tenacity of about 45 g/denier or more.

### Claim 12 (depends on 1)

The polymeric fiber of claim 1 wherein said fiber has a tenacity of about 50 g/denier or more.

### Claim 13 (depends on 1)

The polymeric fiber of claim 1 wherein said fiber surface finish covers from 2.5% to 50.0% of the fiber surface area.

### Claim 14 (depends on 1)

The polymeric fiber of claim 1 wherein said fiber surface finish covers from about 5% to 50.0% of the fiber surface area.

### Claim 15

A polymeric fiber having a surface, said surface having a surface area, wherein said fiber surface is partially covered by a fiber surface finish, wherein said fiber surface finish covers from about 1.0% to about 50.0% of the fiber surface area, and further comprising a polymeric binder coated on said fiber on top of said fiber surface finish.

### Claim 16 (depends on 15)

The polymeric fiber of claim 15 wherein said fiber surface finish covers from 2.5% to 50.0% of the fiber surface area.

### Claim 17 (depends on 15)

The polymeric fiber of claim 15 wherein said fiber has a tenacity of about 30 g/denier or more.

### Claim 18

A single non-woven polymeric fiber having a surface, said surface having a surface area, wherein said fiber surface is partially covered by a fiber surface finish, wherein said fiber surface finish covers from about 1.0% to 50.0% of the fiber surface area, and wherein said fiber has a tenacity of about 7 g/denier or more.

### Claim 19 (depends on 18)

The single non-woven polymeric fiber of claim 18 wherein said fiber surface finish covers from 2.5% to 50.0% of the fiber surface area.

### Claim 20 (depends on 18)

The single non-woven polymeric fiber of claim 18 wherein said fiber has a tenacity of about 30 g/denier or more.