EP0291859A1 - Anti-ballistic material and related manufacturing process - Google Patents

Anti-ballistic material and related manufacturing process Download PDF

Info

Publication number
EP0291859A1
EP0291859A1 EP88107653A EP88107653A EP0291859A1 EP 0291859 A1 EP0291859 A1 EP 0291859A1 EP 88107653 A EP88107653 A EP 88107653A EP 88107653 A EP88107653 A EP 88107653A EP 0291859 A1 EP0291859 A1 EP 0291859A1
Authority
EP
European Patent Office
Prior art keywords
cellulose acetate
impregnated
material according
ethyl vinyl
layer
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.)
Withdrawn
Application number
EP88107653A
Other languages
German (de)
French (fr)
Inventor
Augusto Alessi
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.)
Tat Sas Di Combi Maria Luisa & C
Original Assignee
Tat Sas Di Combi Maria Luisa & C
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 claimed from IT20568/87A external-priority patent/IT1204638B/en
Priority claimed from IT8722634A external-priority patent/IT8722634A0/en
Application filed by Tat Sas Di Combi Maria Luisa & C filed Critical Tat Sas Di Combi Maria Luisa & C
Publication of EP0291859A1 publication Critical patent/EP0291859A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/645—Impregnation followed by a solidification process
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4218—Glass fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4242—Carbon fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/4334—Polyamides
    • D04H1/4342—Aromatic polyamides
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/587—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives characterised by the bonding agents used
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
    • D06M15/03—Polysaccharides or derivatives thereof
    • D06M15/05—Cellulose or derivatives thereof
    • D06M15/07—Cellulose esters
    • 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

Definitions

  • the present invention concerns a bullet- and splinter- proof material.
  • bonded layers for this purpose each layer consisting of a fabric-type structure (woven or non-woven fabric, loose fibres, for example nylon, carbon or Kevlar, a Dupont registered trademark, or other aromatic polyammides or aramides) which is impregnated or in any event coated with plastic material.
  • a fabric-type structure woven or non-woven fabric, loose fibres, for example nylon, carbon or Kevlar, a Dupont registered trademark, or other aromatic polyammides or aramides
  • plastic material thus far in use there are difficulties in achieving a homogeneous material, as far as ballistic proofing characteristics are concerned, especially when manufacturing large items.
  • the material used up to now has a relatively high unit weight, rendering the items produced too heavy or too bulky. Normally anti-ballistic material is also difficult to form.
  • the aim of the present invention is to provide a material having high ballistic proofing over its entire surface, that also has a low unit weight and is preferably easy to process.
  • the above aims have been achieved with a material consisting of loose fibres, spun products, woven and non-woven fabrics, impregnated or coated with cellulose acetate butyrate or cellulose acetate propionate or ethyl vinyl acetate as such or plasticated or mixed with other resins the content of which is lower than 50%.
  • the above described material is preferably produced by immersing the base layer in a tank containing a solution or a dispersion of the above-mentioned resin and then subjecting it to heat treatment to allow the solvents or the water to evaporate.
  • the amount of product deposited on each layer is adjusted simply by changing the viscosity of the solution or the dispersion or by constantly squeezing the base. In this manner a high degree of evenness is easily achieved in the production of each layer. Heating is preferably carried out in a heated vertical tunnel through which the material is passed, an impregnated product being obtained that feels soft and is therefore easily shaped.
  • the material is heated to a higher temperature, 120-130°C, the result is a semi-rigid impregnated product suitable for flat shapes.
  • the material according to the invention offers a series of advantages. As far as its characteristics are concerned, it has a lower unit weight than other known materials having the same strength, its ballistic proofing is even and remains unchanged by time. As far as its formability is concerned, being produced with a thermoplastic resin the material lends itself to re-shaping and re-forming: all that is required is heating to make the hardened product become plastic again. As regards cost, the production cycle is economical because the process does not involve any critical step, thus it requires only limited supervision.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Laminated Bodies (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

The present invention concerns an anti-ballistic material consisting of loose fibres, one or two layers of woven or non-woven fabric impregnated with a cellulose acetate butyrate or cellulose acetate propionate resin or ethyl vinyl acetate, as such or plasticated or in a mixture with other resins the content of which is less than 50%. Said material lends itself to various uses and in particular to further processing, in that, being produced with a thermoplastic resin, it can be made plastic again by heating.

Description

  • The present invention concerns a bullet- and splinter- proof material.
  • Known processes use bonded layers for this purpose each layer consisting of a fabric-type structure (woven or non-woven fabric, loose fibres, for example nylon, carbon or Kevlar, a Dupont registered trademark, or other aromatic polyammides or aramides) which is impregnated or in any event coated with plastic material. With the materials thus far in use there are difficulties in achieving a homogeneous material, as far as ballistic proofing characteristics are concerned, especially when manufacturing large items. Moreover the material used up to now has a relatively high unit weight, rendering the items produced too heavy or too bulky. Normally anti-ballistic material is also difficult to form.
  • The aim of the present invention is to provide a material having high ballistic proofing over its entire surface, that also has a low unit weight and is preferably easy to process.
  • The above aims have been achieved with a material consisting of loose fibres, spun products, woven and non-woven fabrics, impregnated or coated with cellulose acetate butyrate or cellulose acetate propionate or ethyl vinyl acetate as such or plasticated or mixed with other resins the content of which is lower than 50%.
  • The above described material is preferably produced by immersing the base layer in a tank containing a solution or a dispersion of the above-mentioned resin and then subjecting it to heat treatment to allow the solvents or the water to evaporate.
  • The amount of product deposited on each layer is adjusted simply by changing the viscosity of the solution or the dispersion or by constantly squeezing the base. In this manner a high degree of evenness is easily achieved in the production of each layer. Heating is preferably carried out in a heated vertical tunnel through which the material is passed, an impregnated product being obtained that feels soft and is therefore easily shaped.
  • If the material is heated to a higher temperature, 120-130°C, the result is a semi-rigid impregnated product suitable for flat shapes.
  • The material according to the invention offers a series of advantages. As far as its characteristics are concerned, it has a lower unit weight than other known materials having the same strength, its ballistic proofing is even and remains unchanged by time. As far as its formability is concerned, being produced with a thermoplastic resin the material lends itself to re-shaping and re-forming: all that is required is heating to make the hardened product become plastic again. As regards cost, the production cycle is economical because the process does not involve any critical step, thus it requires only limited supervision.

Claims (9)

1. An anti-ballistic material characterized in that it consists of fibres, spun products impregnated with cellulose acetate butyrate or cellulose acetate propionate or ethyl vinyl acetate as such or plasticated or mixed with less than 50% of other resins.
2. A material according to claim 1, characterized in that loose fibres are impregnated.
3. A material according to claim 1, characterized in that a layer of woven or non-woven fabric is impregnated.
4. A material according to the preceding claims, characterized in that a plurality of impregnated base layers are made fast with each other by hot-pressing.
5. A material according to any one of the preceding claims, characterized in that the impregnated fibres, spun products or fabrics consist of aramides, aromatic polyammides, glass, carbon or other synthetic or artificial materials.
6. Anti-ballistic products characterized in that they have been manufactured from the material according to any one of claims 1 to 5.
7. A manufacturing process for the material coated with cellulose acetate butyrate or cellulose acetate propionate or ethyl vinyl acetate, characterized in that the base layer is covered, spread, soaked, impregnated with cellulose acetate butyrate or cellulose acetate propionate or ethyl vinyl acetate.
8. A process according to claim 7, characterized in that each layer is immersed in a tank containing a solution or a dispersion of the resin, then subjected to heat treatment to allow the solvents or the water to evaporate.
9. A process according to claim 7 or 8, characterized in that each layer, after impregnation or coating with cellulose acetate butyrate or cellulose acetate propionate or ethyl vinyl acetate passes through a heated vertical tunnel.
EP88107653A 1987-05-18 1988-05-12 Anti-ballistic material and related manufacturing process Withdrawn EP0291859A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IT20568/87A IT1204638B (en) 1987-05-18 1987-05-18 Lightweight, thermoplastic anti-ballistic material
IT2056887 1987-05-18
IT2263487 1987-11-13
IT8722634A IT8722634A0 (en) 1987-11-13 1987-11-13 SEALED MATERIAL AND RELATED PRODUCTION PROCEDURE.

Publications (1)

Publication Number Publication Date
EP0291859A1 true EP0291859A1 (en) 1988-11-23

Family

ID=26327581

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88107653A Withdrawn EP0291859A1 (en) 1987-05-18 1988-05-12 Anti-ballistic material and related manufacturing process

Country Status (2)

Country Link
EP (1) EP0291859A1 (en)
IL (1) IL86414A0 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991008895A2 (en) * 1989-11-06 1991-06-27 Allied-Signal Inc. Ballistic resistant composite article having improved matrix system
US5196252A (en) * 1990-11-19 1993-03-23 Allied-Signal Ballistic resistant fabric articles
WO2002084202A1 (en) * 2001-04-12 2002-10-24 E.I. Du Pont De Nemours And Company Ballistic resistant article
US8132494B1 (en) 1989-11-06 2012-03-13 Honeywell International, Inc. Ballistic resistant composite article having improved matrix system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE541167C (en) * 1930-01-15 1932-01-05 I G Farbenindustrie Akt Ges Cellulose ester lacquers for covering non-rigid substrates
EP0169432A1 (en) * 1984-07-18 1986-01-29 Val. Mehler AG Bullet stopping laminate
EP0221794A1 (en) * 1985-09-27 1987-05-13 Hutchinson S.A. Malleable modular car armour

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE541167C (en) * 1930-01-15 1932-01-05 I G Farbenindustrie Akt Ges Cellulose ester lacquers for covering non-rigid substrates
EP0169432A1 (en) * 1984-07-18 1986-01-29 Val. Mehler AG Bullet stopping laminate
EP0221794A1 (en) * 1985-09-27 1987-05-13 Hutchinson S.A. Malleable modular car armour

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5330820A (en) * 1989-07-13 1994-07-19 Alliedsignal Inc. Ballistic resistant composition article having improved matrix system
WO1991008895A2 (en) * 1989-11-06 1991-06-27 Allied-Signal Inc. Ballistic resistant composite article having improved matrix system
WO1991008895A3 (en) * 1989-11-06 1991-09-05 Allied Signal Inc Ballistic resistant composite article having improved matrix system
US8132494B1 (en) 1989-11-06 2012-03-13 Honeywell International, Inc. Ballistic resistant composite article having improved matrix system
US5196252A (en) * 1990-11-19 1993-03-23 Allied-Signal Ballistic resistant fabric articles
WO2002084202A1 (en) * 2001-04-12 2002-10-24 E.I. Du Pont De Nemours And Company Ballistic resistant article
US6610617B2 (en) 2001-04-12 2003-08-26 E. I. Du Pont De Nemours And Company Ballistic resistant article
AU2002247444B2 (en) * 2001-04-12 2006-07-06 E.I. Du Pont De Nemours And Company Ballistic resistant article
CN100402968C (en) * 2001-04-12 2008-07-16 纳幕尔杜邦公司 Ballistic resistant article
KR100848453B1 (en) * 2001-04-12 2008-07-28 이 아이 듀폰 디 네모아 앤드 캄파니 Ballistic resistant article

Also Published As

Publication number Publication date
IL86414A0 (en) 1988-11-15

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