CS210249B1 - Diazographic material and thermo-adhesive layer - Google Patents

Abstract

1. Diazographic material with a thermoadhesive layer. 2. Field of light-sensitive materials - diazography - Ing. Cl. G 03 C 3. The invention solves the problem of a diazographic material with a thermoadhesive layer on a paper substrate. 4. A lignin-free paper substrate is provided on one side with a light-sensitive diazographic composition and on the opposite side with a thermoadhesive layer of homo or copolymers of vinyl acetate, acrylic acid, its esters, methacrylic acid, their esters, styrene, ethylene, softened with plasticizers. 5. Use in the clothing, textile industry and in general in the mass production of patterns and templates. 6. The invention is best characterized by examples 1, 5, 7.

Description

BACKGROUND OF THE INVENTION The present invention relates to a diazographic material and a textured layer on a paper backing which is provided with a diazographic light-reflecting layer on one side and a thermo-adhesive layer on the other.

Dlazographic material and thermo-adhesive layer It is a material used in mass production in the textile and clothing industry, laundry industry, mass production of parts and generally in the production of templates, cuts, etc. The light-luminous layer is exposed to light radiation, especially in the ultraviolet part of the spectrum. translucent artwork cut or template, the image is then induced by ammonia vapor or liquid developer. The cut or template is then exposed to temperature, usually by ironing, adhered to a cloth or other material, and in the next stage the parts are usually separated by meohanions.

It is known to produce diazographic materials having a thermo-adhesive layer on a paper backing, where one side is provided with a light-sensitive layer and the counterpart is coated with a thermo-adhesive layer with a melting point within a narrow range. The application of the thermoplastic layer is most often made from aqueous dispersions or solutions of various polymers and copolymers and is associated with a number of theological problems. Easily bonding of the rolls in the theological process by the reverberation effect of the winding temperature or pressure. In the case of removal of these defects by the use of other substances, the adhesion when applied to the material is reduced, especially the textile with minimal pile or speoial treatment.

It has now been found a thermo-layered palzographic material in which the arrangement of the individual layers, possibly layers and homo-copolymers in the thermo-layer, eliminates the above-mentioned drawbacks, while lowering the quality of the paper backing than conventional.

The above-mentioned drawbacks do not have a diazographic material having a thermo-adhesive layer, which is characterized in that it comprises a lignin-free paper substrate weighing 20 to 180 g / m ² , on which a thermo-adhesive layer in an amount of 4 to 35 g / m ² is applied on one side. based on dry matter, comprising a polyvinyl acetate or a vinyl acetate copolymer with acrylic esters, preferably ethyl acrylate, butyl acrylate or ethyl hesacrylacrylate, acrylic acid, methacrylic acid, methacrylic acid esters, ethylene or styrene, preferably softened with plasticizers, preferably plasticizers, or sebacic, on the other side of the paper backing, a light-sensitive diazographic layer comprising 0.3 to 7.5% of a diazo compound or of a palo-compound based on simple or substituted p-phenylenediamine derivatives, preferably 4-pyrazole-dialkyl or 4-diazo- alkyl-alkoxy-p-phenylenedlamine or dialkylamino- or hydroxyalkylamino-β-phenylene diamine, or corresponding to compounds with a heterooyl radical such as pyrrolidine, morpholino, preferably 2,5-dlalkoxymolpholino- or 3-alkyl- or alkoyl-pyrrolidino-p-phenylene diamine, and 0.4 up to 9.7% of color-forming coupling components, capable of providing neutral mixed azo dyes, preferably derivatives of alpha- or beta-resoroylic acid or 4-bromo-3,5-resoroylic acid, single or substituted amides of naphthoic acid, preferably beta-aminoethylamide or N- of morpholinopropylamide acids, derived from hydroxy or polyhydroxy-naphthalene or corresponding sulfonic acids or salts thereof, and buffering agents, stabilizing agents, metallising agents, surfactants and plasticizers.

Under the thermo-adhesive layer, an intermediate layer of 0.5 to 20 g / m ² , based on dry matter, comprising polyvinyl acetate or copolymers of vinyl acetate with acrylic acid, its esters, ethylene, styrene or gelatin, modified gelatin, oelulosic derivatives including hydrolyzed derivatives, polydextrans, preferably a combined filler with an average particle size of 0.01 to 50 µm in an amount of 0.5 to 30%, based on dry weight, of the composition comprising silica, silicates, silica, alumina , zinc oxide, titanium dioxide, talc, kaolin, starches and barium sulfate.

The light sensitive diazographic layer may be cast directly onto the paper backing, or may be combined with a generally known pre-separation layer, a pseudo-pre-separation or a barrier layer.

Example 1

Thermo-adhesive layer

50% aqueous copolymer dispersion having the following monomer composition:

vinyl acetate 42% butyl acrylate 4.8% dibutylfralate 3.7%

The dispersion is applied in the usual manner and dried. The dry mortar is 18 g / m ² . Example 2

Thermo-adhesive layer

50% aqueous copolymer dispersion wasting the following monomer weight composition:

wool acrylate 43% butyl acrylate 10.7%

The dry film thickness is 16.8 g / m ² .

Example 3

Thermo-adhesive layer

50% aqueous copolymer dispersion having the following monomer composition:

vinyl acetate 5% ethylene 45%

The dry film thickness is 19.1 g / m ² .

Example 4

Bezivrstva

4% aqueous carboxymethylcellulose solution.

The dry film thickness is 4 g / m ² .

Example 5

Layer g filler

According to Example 2, 100 ml of water, preferably distilled or deionized 1000 ml silica of medium size g

particles up to 15 µm

The filler is dispersed and the suspension is applied to the paper in a conventional manner in an amount of 3 g / m @ ² in the dry state.

Example 6

Light gray dlasographic layer for red darkness

I. Distilled water or deienlzoveaá 400 ml

Oitronic acid 18 g

Thiourea 24 g

Urea 18 g

Zinc chloride 12 g

II. Water distilled or delonized 60 ° C 300 ml

Caffeine 10 g

4-Bromo-3,5-dihydroxybenzoic acid methylamld 10 g

Solution I and II are made up, made up to 1 000 ml with distilled or delonated water and

4-palzo-2,5-dimethoxyphenylmorpholine, 1/2 ZnClg 10 g

It is poured in the usual manner onto paper and dried. If the amount of DC coating controls the desired agility.

Example 7

Light-blue pillography layer for blue tan

Water distilled or delonized 700 ml

Oitronic acid 25 g

Thiourea 28 g

Urea 8 g

Aluminum sulphate 5 g

Zinc chloride 10 g

Sodium chloride 10 g

2-Oxy-3-natoic acid aminoethyl amide 15 g

Diotylene glycol 30 g

4-palzo-2,5-diethoxyphenylmorpholine · 1/2 ZnCl? 13 g

Saponin 0.1 g

Water distilled or delonized to 1000 ml

Manoso is conventionally applied to paper and dried.

Claims (2)

Claims 1. A thiazolobed material having a backing layer, characterized in that it comprises a lignin-free paper backing weighing 20 to 180 g / m ² , on which a thermo-backing layer is applied on one side in an amount of 4 to 35 g / m ² , a polyvinyl laootate or a copolymer of a wool acrylate with acrylic esters, preferably ethyl acrylate, butylacrylate, ethylhexyl alkoxylate, acrylic acid, methacrylic acid, methacrylic acid esters, ethylene or styrene, plasticized with plasticizers, preferably phthalic, adipic or adipic acid derivatives a light-sensitive diazographic layer comprising 0.3 to 7.5% of a diazo compound or a diazo compound based on simple or substituted p-phenylenediamine derivatives, preferably 4-diazo-dialkyl- or 4-diazo-alkyl-alkoxyp- phenylenediamine or dialkylamino or hydroxyalkylamino-p-phenylenediamine; o corresponding compounds, with a heteroxy-cyclic radical, e.g. pyrrolidine, morpholine, preferably 2,5-dialkoxy-morpholino- or 3-alkyl- or alkoxy-pyrrolidino-p-phenylene diamine, and 0.4 to 9.7 % of color-coupled coupling components capable of providing neutral mixed azo dyes, preferably alpha- or beta-rosorcylic or 4-bromo-3,5-resoreylic acid derivatives, single or substituted naphthoic acid amides, preferably beta-aminoethylaid or TT-morpholinopropylamide acids derived from hydroxy - or polyhydroxy-naphthalene or the corresponding sulfonic acids or salts thereof, and buffering agents, stabilizing agents, metallizing agents, surfactants and plasticizers. The diazographic material according to claim 1, characterized in that an intermediate layer of 0.5 to 20 g / m ² , based on dry matter, containing polyvinyl acetate with acrylic acid, its esters, ethylene, styrene, or gelatin, modified gelatin, polyvinyl alcohol, cellulose derivatives including hydrolyzed derivatives, polydextrans, preferably a combined medium size filler of 0.01 to 50 µm in an amount of 0.5 to 30%, based on dry matter, of the group comprising silica , silicates, silicic acid, alumina, zinc oxide, titanium dioxide, talc, kaolin, starches and barium sulfate.