Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B44—DECORATIVE ARTS
  • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
  • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
  • B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
  • B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
  • B44C1/17—Dry transfer
  • B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
  • D06P5/003—Transfer printing
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06Q—DECORATING TEXTILES
  • D06Q1/00—Decorating textiles
  • D06Q1/12—Decorating textiles by transferring a chemical agent or a metallic or non-metallic material in particulate or other form, from a solid temporary carrier to the textile

Definitions

• the invention relates to a hot melt transfer material according to the preamble of Claim 1, a method for producing the same, and its Use.
• a Carrier material which can be paper
• a Carrier material which can be paper
• a binder based on a thermoplastic polymers and additives such as polyethylene glycols for quick Absorption and viscosity change of aqueous inks, included and others
• Additives for fixing the aqueous ink after transfer to textiles exhibit.
• the weight ratio of binder and polymer particles (pigment) is adjusted so that the layer has a porosity. This is the case if the ratio is close to the critical pigment volume concentration and the Layer has a tendency to chalk. This manifests itself in a minor mechanical strength of the layer.
• hotmelt transfer materials based on these patents are insufficient Results, because when labeling and painting watery colors such as Water colors to be applied with a brush are insufficient if the application is strong recorded or the layers when labeled with pencils or chalks mechanically injured because the particles of the porous layer are anchored too little are.
• additives in the layer like Polyethylene glycols fix the stains and thus wash fastness impaired, so that when washing the textiles in warm water the colors bleed out.
• the object of the invention is therefore the known hot melt transfer materials to be modified for the ink jet application in such a way that a direct painting with common crayons and paints used by children, which contain water-based paints, solvent-based paints, or wax paints, is possible and the colors are fixed in the washing process with warm water stay.
• the invention is based on the features of the invention characterizing part of claim 1 solved.
• Advantageous further training are the subject of the subclaims.
• the porous layer has microporous or microporous, spontaneously wettable particles with the largest possible surface area for adsorption or absorption of the dye.
• Other additives described in the above-mentioned patent for the improved water absorption, which impair the washability, are omitted.
• finely divided, amorphous SiO 2 with large specific surfaces could be used.
• the particles advantageously consist of microporous, thermoplastic plastic particles with specific surfaces> 6 m 2 / g and with a melting temperature ⁇ 200 ° C. In this case, when the layer is hot ironed onto a fabric, the particles fuse together with the dye, binder and any other hot melt layers.
• Fine powders of plastics can be obtained by grinding and sieving.
• the average particle size is usually over 50 microns with a wide grain size distribution.
• the particles are spherical and the specific surfaces are below 0.2 m 2 / g.
• Finer powders are obtained by precipitating the plastic from the solution directly during the manufacturing process.
• powders with average particle sizes of approximately 5 to 90 microns are obtained, each with a relatively narrow particle size distribution, the particles generally also being formed spherically, so that the specific surfaces are below 2 m 2 / g.
• Micro-porous or micro-porous particles only emerge as specially designed manufacturing, precipitation and gentle drying processes, or as stable aggregates with average particle sizes of 5 to 40 microns, which consist of ultrafine primary particles, which can be smaller than 0.2 microns, be formed. Such particles have specific surfaces that are significantly above 2 m 2 / g. Another advantageous property that such plastic particles should have is a spontaneous wetting ability against water and solvents.
• a commercially available thermoplastic polymer powder consisting of such particles is, for example, a finely divided polyamide powder which is produced by means of polyaddition, a subsequent precipitation process and gentle drying, a surface area of approximately 25 m 2 / g, a particle size of approximately 10 microns and a spontaneous wettability Has water and solvents.
• Such particles adsorb or absorb significantly more dye than spherical particles with a smooth surface.
• less good or poorly wetting microporous particles can be hydrophilized with wetting agents.
• a thermoplastic polymer melting at a temperature of ⁇ 200 ° C is used as the binder, which anchors the particles sufficiently mechanically, but is minimally dosed and is selected such that the layer remains open-pored and the binder does not completely coat the microporous particles.
• the thermoplastic binder advantageously has a melting temperature ⁇ 140 ° C., so that it can easily melt when transferred to textiles by the action of the hot iron or the ironing press.
• the binder should be resistant to washing solutions if possible.
• Binders based on aqueous dispersions or dissolved plastics can be found in the above-mentioned US Pat. No. 5,501,902. Binders based on dissolved plastics should be inert to the solvents used in the solvent-based paints.
• a further improvement in the absorption of watery and solvent-based Colors and an improvement in mechanical stability is provided by a Binder layer, which itself has a porous or porous structure, reached.
• the inherent porosity or intrinsic porosity of the binder allows a much higher one Dosage of the binder in relation to the microporous or microporous Particles far below the critical pigment volume concentration and thus far away from a tendency to chalk out.
• the porous structure of the binder itself promotes the access of aqueous and solvent-based paints to the Particles.
• a plastic is mixed in a single-phase solvent mixture
• Plastic solvent and a non-plastic solvent Contains precipitant (non-solvent), dissolved.
• the precipitant has one lower vapor pressure than the solvent.
• Solvents and precipitants should not have any miscibility gap with each other.
• the Membrane formation behavior can be described with triangular state diagrams will. If such a plastic solution is coated on a carrier and that Evaporated solvent, the precipitant accumulates in the Solvent mixture until a separation into two phases occurs at the gel point (Phase inversion), a polymer enriched phase and a phase with the Precipitant, which can consist of fine droplets that form the pores.
• this method becomes Formation of pores in the binder with the use of wettable, microporous or microporous plastic particles combined, so are more achieved favorable effects.
• the ternary mixture polymer / solvent / Precipitant
• microporous dispersed into the system or contains microporous particles so form after coating Dispersion on a carrier when drying the pores preferably in the area of Particles from (nucleation). Droplets of the precipitant in the gel film can easily are absorbed and held by the microporous or microporous particles their inner and outer surfaces largely free of binders.
• the pores are preferably in the range of Particles, so that after the layer has dried, the absorption capacity of the particles preserved for water-based and solvent-based paints.
• the proportion of binder in the layer can be up to over 50% by weight.
• the binder for the hot melt layer must have a melting temperature ⁇ 200 ° C have, advantageously even ⁇ 150 ° C.
• solvent / Precipitant must be taken care that these are the micro porous particles do not swell or dissolve.
• Suitable binders are for example polyesters, polyacrylates, polymethyl methacrylates, ethylene copolymers, Ethylene-acrylic acid copolymers and polyamides.
• Synthetic papers or plastic foils which are sufficiently heat-resistant when ironed on, can be used to support the porous hotmelt layer.
• papers are advantageously used as carriers.
• siliconized carriers are advantageously used on one side.
• Such carriers are known as abhesive papers or papers siliconized on one side.
• Papers of 50-100 g / m 2 are advantageously used.
• the siliconized side serves as an intermediate layer and must be sufficiently heat-resistant so that the painted layer does not bond with it and makes it difficult to detach after ironing and cooling.
• the hot-melt transfer material according to the invention is advantageously equipped with a further auxiliary layer, which lies between the porous layer on the one hand and the carrier material or siliconized carrier material on the other hand and consists of a film-forming thermoplastic polymer.
• Suitable polymers for this purpose are thermoplastics with a melting range below 200 ° C., preferably polyester, hot melt adhesives for the textile industry, for example based on polyethylene, or sealable polymers, such as dispersions for heat-sealing layers, for example based on ethylene copolymers or in particular ethylene-acrylic acid Copolymers. These polymers are also preferably selected so that their resistance to common solvents of the crayons is sufficient.
• the hotmelt transfer material according to the invention is particularly suitable for labeling and painting with common crayons and stains such as aqueous or solvent-containing crayons, wax crayons and water colors.
• Aqueous and solvent-based colors are quickly absorbed by the microporous particles in the porous layer and well adsorbed or absorbed.
• the porosity of the layer disappears and the thermoplastic, microporous particles with the dye are absorbed or melted in the binder and in the second hot melt layer and thus permanently fixed.
• An equally good absorption into the layer is achieved in the case of superficially applied wax paint when ironing onto textile.
• Marking and painting on the hot melt transfer material according to the invention is as easy as on ordinary paper, so that painting can be done with the familiar colors.
• the painted hot-melt transfer material can easily be ironed from the back with a hot iron onto white or colored cotton or cotton-containing textiles such as T-shirts or fabric bags. After the backing has been removed, the painted motif is applied to the textile fabric in the original quality and fixed in such a way that the textile fabric can be washed with warm water using common detergents without bleeding and impairing the color.
• the dispersion for the hot-melt layer (primer) is spread on the silicone side of a one-sided siliconized adhesive paper (80 g / m 2 ) and then dried at a temperature of approximately 110 ° C. The dry application should be approximately 30 g / m 2 .
• the dispersion for the porous hot melt layer is prepared. Using a stirrer, portions of the polyamide powder (point 2) and the diluent (point 3) are alternately stirred into the binder solution (point 1) under dispersion conditions until a hand-knife-coated, all-purpose dispersion of suitable viscosity is obtained.
• the dispersion for the porous hot melt layer is then spread onto the hot melt layer (primer / 1st step) and dried at a temperature of approximately 60-80 ° C.
• the dry application should be about 30 g / m 2 .
• the solids content of the binder, based on the porous hot melt layer, should be in the range from 30 to 50% by weight.
• the layer has good mechanical stability and porosity and can be with the usual painting aids such as aqueous and solvent-containing crayons, Paint watercolors and crayons in the same way as ordinary paper.
• paint watercolors and crayons in the same way as ordinary paper.
• the hot melt material is with the put the painted side against the T-shirt and position it where you want it. With the iron, the back of the paper becomes thorough under strong pressure painted so that the color can melt with the layer and this with connects the fabric. When the paper back becomes hot again has cooled, the adhesive paper is removed. Then several can Washing processes carried out in a washing machine with common detergents will. The colors, even the water colors, turn out to be washable.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Decoration By Transfer Pictures (AREA)
• Coloring (AREA)
• Thermal Transfer Or Thermal Recording In General (AREA)

Applications Claiming Priority (3)

Publications (3)

Family

ID=4250873

Family Applications (1)

Country Status (3)

Cited By (5)

Families Citing this family (2)

Citations (9)

Family Cites Families (2)

• 1996
  • 1996-12-30 CH CH320296A patent/CH690711A5/de not_active IP Right Cessation
• 1997
  • 1997-12-10 EP EP19970810964 patent/EP0850786B1/fr not_active Expired - Lifetime
  • 1997-12-10 DE DE59706605T patent/DE59706605D1/de not_active Expired - Fee Related

Patent Citations (9)

Non-Patent Citations (6)

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