Classifications

• • 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
  • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
  • D06M23/16—Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment
• • 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
  • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
  • D06M2200/30—Flame or heat resistance, fire retardancy properties

Definitions

• the invention relates to flame-retardant finished, flexible materials, in particular textiles.
• the invention has for its object to provide flexible, in particular textile, materials in a flame-retardant manner that good wearing properties result with excellent protection. This also includes the possibility of using flame retardants that have not previously been used for textiles.
• this object is achieved in that the flame retardant is applied to the flexible material in a statistical distribution or in a specific pattern such that a substantial part of the surface of the flexible carrier remains uncovered.
• the flame retardant is preferably printed in a specific pattern, in particular in the form of a dot.
• This printed pattern of the flame retardant expediently has a height of 0.1 to 1 mm and a diameter or a width of 0.05 to 2 mm, preferably 0.2 to 1 mm. Due to the design of the pressure is ensured that the printed pattern of the flame retardant only about 2o 0 to 8%, preferably from 3o to 7o% of the surface of the flexible substrate is covered.
• the invention is practically not subject to any restrictions. Flame retardants that promote carbonization and fire-suffocation as well as barrier layers can be involved.
• the so-called intumescent layer formers are also very suitable, as they contain substances that foam up when they heat up, carbonize from 2oo to 300 ° C, solidify and form a fine-pored, well-insulating cushion.
• the flame retardants known for plastics can also be used, the flame retardant effect of which can be enhanced by so-called synergists or certain plasticizers or the binders necessary in particular in the case of pigmented flame retardants.
• Self-extinguishing plastics in particular those with a higher halogen content, can also be used alone or in combination with other known flame retardants.
• all flame retardants can be used within the scope of the invention, which are compatible with one another in combination with the textile fabric serving as a carrier and. for example in Römpps Chemie-Lexikon, 8th ed., (1981) under the keyword “Flame retardant” and the references listed here.
• the flame retardant is not itself suitable for printing, but is, for example, pigment-shaped and requires a binder, suitable, in particular polymeric, binders are used for printing on the flame retardant. Chemically, these belong to the group of polyurethanes, polyacrylates or elastomers. The latter can also be halogenated, in particular chlorinated or fluorinated. Melting glue based on polyamides, polyesters or ethylene-vinyl acetate copolymers (EVA). When printing, the polymeric binders and hot melt adhesives are usually in the form of a dispersion. However, only the polymeric, solidified, for example crosslinked or vulcanized, binders then remain in the printed pattern. Their share in the printed pattern of the flame retardant may be 5 to 2oo, in particular 1 to 5o 0 wt.%, Based on the flame retardant, make up.
• suitable, in particular polymeric, binders are used for printing on the flame retardant. Chemically, these belong to the group of poly
• the backing layer for the flame-retardant flexible material according to the invention is for most areas of application, in particular for the production of protective suits, as a rule a textile fabric made of mineral, synthetic or natural fibers. Woven or knitted fabrics are particularly preferred because of their small thickness and high strength.
• the choice of the backing textile depends on the intended use. In the case of light protective clothing, a composite or mixed fabric made of synthetic or natural fibers and mineral fibers is recommended, with the mineral fiber side being provided with the printed pattern of the flame retardant. The simultaneous weaving of these materials is also suitable.
• the use of flame-retardant or particularly tear-resistant fibers, such as aramids (KEVLAR, NOMEX) or polyimides, can be useful for certain purposes.
• the flexible carrier material can be printed not only on one side but also on both sides and the adhesive effect of the polymeric binder before it solidifies can be used to produce a composite material that is between two flexible, in particular air-permeable permeable T räger Anlagenwegen a discontinuous layer of the regular printed pattern of the bound F lamb protection by means of up to about 1 mm thickness. Then, for example, these nubs of the flame retardant lie between two webs and are better protected.
• This composite material can be produced by allowing another substrate layer web to run in immediately after the printing of a web of the flexible carrier layer, then drying the composite material and laminating it together under the action of pressure and heat.
• the manufacture of the flame-retardant flexible material according to the invention takes place in such a way that a paste made from, for example, powdered flame retardant, optionally with liquid flame retardants, synergists or plasticizers, a solution or dispersion of the polymeric binder and, if appropriate, customary printing aids is applied to the flexible carrier layer by rotary screen printing applied, dried and solidified in a specific pattern.
• a paste made from, for example, powdered flame retardant, optionally with liquid flame retardants, synergists or plasticizers, a solution or dispersion of the polymeric binder and, if appropriate, customary printing aids is applied to the flexible carrier layer by rotary screen printing applied, dried and solidified in a specific pattern.
• the polymeric binder is e.g.
• the latex of optionally halogenated elastomers such as natural, synthetic or silicone rubber, chloroprene or fluoroprene
• the piles or dams of the bound flame retardant applied in a certain pattern must be dried to remove the volatile latex components after printing.
• they can then also be subjected to pressure and / or heat in order to solidify, i.e. to be crosslinked or vulcanized, provided the flame retardant does not change, e.g. functionally decomposed.
• Hot melt adhesives in particular based on polyamides, polyesters or EVA, can also be used as dry powder in addition to as a dispersion. Then the printed piles of flame retardants and: - Hot melt adhesive must be exposed to heat radiation shortly after printing, before the printed web is driven into the so-called drying tunnel for final consolidation.
• the foaming intumescent foam when heated is printed in such a pattern or spacing between the flame retardant centers that the print pattern foams together under the action of heat to form a closed protective layer before the textile carrier suffers considerable damage or loses its strength. Once present, the foam can withstand extreme loads for an astonishingly long time. If you applied the fire protection coating by coating or impregnation, you would get a board from the flexible textile carrier that would only be suitable for stationary applications.
• the printed lumps or dams on the other hand, only slightly change the handle and the air or water vapor permeability of the textile material.
• a clear flexible support e.g. a glass fiber fabric or a film
• a considerable amount of light transmission is retained despite the printed points of the insulation protection agent.
• the flame-retardant flexible materials according to the invention offer the same protection as with a full-surface treatment, while the air permeability is still very remarkable and the grip is hardly changed.
• the color of the flexible carrier is also retained on the unprinted side.
• the flexible materials, which are flame-retardant according to the invention can be processed into protective clothing for extreme conditions in both civil and military fields.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical Or Physical Treatment Of Fibers (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Laminated Bodies (AREA)
• Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
• Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
• Manufacturing Of Multi-Layer Textile Fabrics (AREA)
• Fireproofing Substances (AREA)
• Paper (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (3)

Family

ID=6177929

Family Applications (1)

Country Status (3)

Cited By (3)

Family Cites Families (3)

• 1982
  • 1982-11-11 DE DE3241820A patent/DE3241820C2/de not_active Expired - Fee Related
• 1983
  • 1983-09-26 AT AT83109548T patent/ATE42779T1/de active
  • 1983-09-26 DE DE8383109548T patent/DE3379794D1/de not_active Expired
  • 1983-09-26 EP EP83109548A patent/EP0111076B1/fr not_active Expired

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