CN1197228A - Receiving element for electrostatic printing - Google Patents

Abstract

A liquid toner printable thermoplastic film is provided. The film is coated with an ethylene-acrylic acid copolmer based coating capable of receiving electrostatic imaging with liquid toner. Optionally, the coating contains acrylic polymer. In a specific embodiment, the coating includes a major proportion of ethylene-acrylic acid and minor amounts of filler such as talc and silica. The coating can also include wax and/or pigment such as titanium dioxide. In a further embodiment, the carboxylate groups of the copolymer are neutralized with metal ions from group Ia, IIa or IIb of the period table of the elements, speifically, sodium. Label stock structures are also described.

Description

The acceptor that is used for xeroprinting

The present invention relates to the thermoplastic coating film, this coated film can be accepted the printing ink by the liquid toner generation of using in the liquid toner especially xeroprinting.

A kind of very effective image transfer method of using always when xeroprinting is photocopying and photomechanical printing.Usually when xeroprinting, form electrostatic latent image being loaded with on the imaging surface of even static charge.Evenly static charge can obtain by corona discharge is carried out on above-mentioned surface.Then even static charge is exposed under the light beam after the modulation, it is optionally discharged, the video that described light beam forms corresponding to original paper.The surface of discharging forms background, and charged surface forms the positive video.Be coated with the toner-particle of pigment, make its not " printing " part of discharge that sticks to above-mentioned surface, thereby make positive film developing.Use various technology that colorant is transferred on the duplicate then.

Develop toner already and be dispersed in liquid toner in the solvent.In last print steps, by compacting mechanism, solvent is removed.Owing to be liquid medium, therefore can use superfine little dye granule and needn't worry that particle swims in air.Like this, can carry out the high duplicating of image resolution and need not to melt the required high temperature of dry toner.U.S. Patent No. 5,225,306,5,276,492,5,346,796 and 5,407,771 pairs of liquid toners that are used for electrostatic imaging are described.

Paper is widely used as the video acceptor of electrostatic imaging.Use plastics then more favourable as acceptor.Compare with paper, the advantage of plastics comprises moisture resistance, has flexibility and heat sealable, and plastic substrate can be transparent or opaque.But required high temperature can melt plastic film when using the dry toner imaging, and liquid toner can not shift well or adhere on the uncoated plastics.

The surface that the polyamide solution that Indigo company sells with the name of an article of TOPAZ can be used as the coating of plastic film and produces the acceptable liquid toner.Yet,, use polyamide to have disadvantage owing to there is the solvent processing problem.And solution is to the environmental baseline sensitivity.Under low temperature, use solution to have any problem (being easy to lose dissolubility) and coating can absorb the moisture of air, thereby, film is clamminess even after drying.In addition, the problem that also has the solution caking.Therefore, need a kind of coating that can be used as thermoplastics liquid toner acceptor that has overcome above-mentioned shortcoming.

Have and to make the description of film at low temperature lower seal about the coating that contains the ethylene-acrylic acid copolymer that is useful on the polypropylene film.In U.S. Patent No. 5,419, in 960, a kind of coating composition that is used for the polypropylene film has been described, said composition comprises ethene and acrylic acid multipolymer, and in this multipolymer, the carboxyl of about 2-80% has been neutralized by the ion of periodic table of elements Ia, IIa or IIb family metal.Coating composition also can contain lubricant and wax.Coated film has good thermal viscosity and becomes piece and gratifying sealability under low temperature with adhesion.Seal waterproof.

The invention provides a kind of coating, it comprises the multipolymer that is obtained by the carboxylic acid that contains the vinyl unsaturated link that is used for the thermoplasticity film, and described coating can make film be used as the liquid toner acceptor.

The objective of the invention is to, make the thermoplasticity film carry out electrostatic imaging with liquid toner.

The invention is characterized in, a kind of acrylic copolymer based coating is provided, it can make the liquid toner of thermoplasticity film carry out imaging.

The invention has the advantages that, when with acrylic copolymer coating coating thermoplastic film, can use liquid toner to carry out the electrostatic imaging of film and do not have the problem of solvent based coating, especially not have the problem of solvent responsive solvent processing difficulty to environmental baseline.

Term " liquid toner " comprises that toner-particle is dispersed in the composition in the liquid-based.Usually, liquid-based is apolar substance such as aliphatic hydrocarbon cut.U.S. Patent No. 5,225,306,5,276,492,5,346,796 and 5,407,771 are described this quasi-representative toner and the method for using these toners to carry out imaging.Amazingly be that coated film of the present invention can be accepted the toner that obtained by these liquid toner compositions.

Like this, more particularly, the present invention relates to a kind of liquid toner acceptor that is used for electrostatic imaging, this liquid toner acceptor comprises the thermoplasticity substrate, described thermoplasticity substrate has liquid toner in the one side at least and accepts coating, and this liquid toner is accepted coating and comprised the multipolymer that is obtained by the carboxylic acid that contains the vinyl unsaturated link.

On the other hand, the present invention relates to a kind of film that has been coated with liquid toner with the electrostatic imaging method that has.

Aspect another, the present invention relates to a kind of method for preparing the liquid toner acceptor, at least one surface coated liquid toner that this method is included in the thermoplasticity substrate is accepted the step of coating, and described coating comprises the multipolymer that is obtained by the carboxylic acid that contains the vinyl unsaturated link.

The present invention relates to xeroprinting thermoplasticity film, this film comprises the polyolefin substrate, described polyolefin substrate has the coating of the toner that acceptance obtains by liquid toner composition at least in the one side, this coating comprises the multipolymer that is obtained by the carboxylic acid that contains the vinyl unsaturated link and electrostatic applications method for producing toner and toner is in the above arranged.

The polymers of carboxylic acid component of coating generally includes the multipolymer of acrylic or methacrylic acid or these sour esters.Described acrylate contains low alkyl group as having the alkyl of about 1-16 carbon atom, and object lesson comprises methyl, ethyl, butyl, lauryl and stearyl.Acrylic copolymer comprises the sense comonomer that has usually at least about 10,000 mean molecular weight.Acrylic copolymer generally comprises this comonomer of about 5 weight %.

The thermoplastic copolymer that is particularly useful is an ethylene-acrylic acid copolymer.Ethylene copolymer can be about 65-95 weight %, is generally the ethene of about 75-85 weight % and for example is about 5-35 weight %, is generally the multipolymer of the acrylic or methacrylic acid of about 15-25 weight %.The number-average molecular weight of multipolymer is about 2,000-50, and 000, preferably be about 4,000-10,000.

Multipolymer often is to supply with the solution of the multipolymer ammonium salt in ammonia spirit or finely divided liquid.When dry multipolymer, emit ammonia, ionization and the carboxylate groups of water sensitive is converted into most of unionized and to the less sensitive free carboxy of water.

Suitable ethylene-acrylic acid copolymer is the name of an article product sold of Michelman company with Michem-4983.Ethylene-acrylic acid normally forms ethene and the copolymerization of acrylic acid high pressure.When ethene and acrylic acid copolymer, its molecular structure significantly changes owing to the random inclusion of bulk hydroxy-acid group on copolymer chain and the side chain.Carboxyl is free and form key, and with poly-substrate reaction arbitrarily.Another market ethylene-acrylic acid copolymer on sale aqueous dispersions that to be Dow Chemical company sell with the name of an article of Primacor 4983, it has 25% solid content, is obtained by the ethylene reaction of the acrylic acid of 15 moles of % and 85 moles of %.

The total amount of multipolymer can account for the 15-100% of coating composition general assembly (TW) in the whole coating composition, accounts for 30-95% preferably.

Coating also can comprise multipolymer and the polymkeric substance of the carboxylic acid that contains the vinyl unsaturated link and the potpourri of acrylate copolymer.Polymkeric substance is the 5-50% that polymkeric substance accounts for above-mentioned multipolymer weight to the concrete concentration of multipolymer, and multipolymer accounts for 95-50%.

In one embodiment, coating can contain metallic ion such as the alkali metal ion that has neutralized.When implementing this part of the present invention, in the solution of multipolymer or dispersion liquid, add a considerable amount of at least a metallic ions, described metallic ion is the metallic ion of periodic table of elements Ia, IIa or IIb family, preferred sodium, potassium, lithium, calcium or zinc ion, sodion most preferably, metallic ion for example are to exist with their hydroxide form.The amount of these metallic ions can be in the multipolymer for example of being enough to neutralize about 2-80% of all carboxylate groups, be preferably in the scope of about 10-50%.As an example, the form of sodion with NaOH added.The addition of NaOH is equivalent to above-mentioned number percent with the carboxylate groups that is neutralized and (for example is about 0.33-8.8phr, preferably be about 1.1-5.5phr), here, " phr " represents weight portion/total resin of hundred weight portions, when other resins of nothing existed, described total resin was ethylene copolymer.For determining the phr of various adjuvants in the coating, all carboxylate groups of supposing ethylene copolymer are free carboxy (COOH) the form existence with them.

Except that the ethylene copolymer that is partly neutralized, coating of the present invention preferably contains anticaking agent/lubricant.Usually, it is the wax than coarsegrain.Known wax is the organic compound that fusing point is lower, molecular weight is bigger, and it is generally solid in room temperature.Wax can provide further lubricity.Described wax is ceresine such as mineral wax such as vegetable wax such as animal wax such as neutral wax such as beeswax, refining lanocerin, shellac wax and Brazil wax, candelila wax, grecian laurel fruit wax, cerosin and fossil or oxocerite, ceresin, montan wax.Also can be that synthetic wax such as vinyl-type polymer, polyhydroxy ether-ester, naphthalene chloride and chloroflo are as being synthesized the wax that obtains by Fisher-Tropsh.Natural and synthetic microcrystalline wax also all can.Wherein preferred Brazil wax.Wax can account for the 1-20% of coating general assembly (TW) in coating, accounts for 2-10% preferably.

Wax is except that having anti-caking function, and in the time of in mixing coating of the present invention, it also can be used for improving " lubricating " performance of applied film, that is, film slips over the ability on surface satisfactorily under room temperature.

Usually, coating of the present invention contains the granular pattern filler additive than inertia.Being found the filler with specific use in coating of the present invention is pyrogenic silica.Pyrogenic silica is made up of particle, and described particle is more short grained caking, and its particle mean size for example is about the 2-9 micron, preferably is about the 3-5 micron.Generally speaking, the expection of the inoganic solids material of any segmentation such as silicon dioxide can be used as the filler that is fit to the object of the invention.They comprise talcum, lime carbonate, zeyssatite, calcium silicate, bentonitic clay and carclazyte.The total amount of filler accounts for the 0.1-80% of coating general assembly (TW) usually, accounts for 0.3-7.0% preferably.When the transparent film of needs, coating will can not influence transparency, and at this moment, granule density for example is about 0.1-10% with less, is about 0.3-7.0% preferably.The granularity of particle is generally less, is about the 1-10 micron usually, is about the 3-7 micron preferably.Other examples of filler comprise porcelain earth, silicon dioxide, alumina silicate, carclazyte and talcum.Also can be paper pulp.

Preferred those have the filler of anti-caking/lubricating function in above-mentioned filler.Silicon dioxide is an example that is found the filler with this function.

Also can use the particle that can increase opacity.They are the materials than inertia.Lime carbonate is widely used in the thermoplastic coating, and it is cheap and be easy to use.It can use by its native form, but can use " lime carbonate of precipitation " that makes by chemical method.Sometimes, to reduce the absorption of plastifier, also can use the lime carbonate after the coating with resin-coated calcium carbonate granule.

Filler also can comprise colored particles.Described pigment is organism or inorganics, and its particle diameter generally is not less than 1 micron.Typical pigment comprises carbon black and titania.Lime carbonate also can be used as pigment.Other can be used for the particle that pigment of the present invention is metallic pigments such as aluminium, copper, gold, bronze or zinc.These pigment generally are thin slice shape particles, in the time of in mixing coating vehicles, light can be reflected.

The filler that comprises inert particle lubricant/anticaking agent, opacifiers and/or pigment can be used in combination according to desired translucent or opaque degree.Usually, when using opaque particle and/or pigment, its concentration accounts for below 70% of total particle concentration of coating, is about the 20-50% of the total particle concentration of coating preferably.

Except that the particle of pointing out above, the object lesson that can be used for particle of the present invention also comprises acetylene black, alpha-cellulose, alumina silicate, barium sulphate, calcium silicate, calcium sulphate, cellulose, carclazyte, zeyssatite, glass sheet, keratin, lignin, lithopone, mica, microballoon, molybdenum disulfide, feldspar, paper, paper pulp, quartz, shell powder, talcum, vermiculite and wood.

Spendable other optional adjuvants comprise crosslinking chemical that for example about 25 weight % are following such as melamine formaldehyde resin, the antistatic agent below about 10 weight % such as Tween-81 and defoamer such as the silicone oil or the fluorohydrocarbon that can exist in the amount below about 0.1 weight %, and more than amount is all in the general assembly (TW) of coating.

Coating can be by under the condition of room temperature and normal pressure, all the components is added in the habitual mixing arrangement mixing or blend successively or simultaneously and makes.Usually, coating is in aqueous medium, and solid content is about the 1-60% of coating composition finished product, is about 5-50% preferably.

To can comprise the thermoplastic that can be made into film any individual layer or multilayer with the film that coating of the present invention is handled.Film can be transparent or opaque.Described thermoplastic comprises any polyolefin such as polypropylene, tygon, polybutylene, polystyrene, Polyvinylchloride, their multipolymer or blend.Other examples of described film condensation material comprise polyethylene terephthalate and nylon.In multifilm, at least one surface of thermoplastic core layer, one or more cortexes are arranged.Cortex can comprise tygon, in comprising or multipolymer or the terpolymer or their blend of the alpha-olefin of highdensity tygon, polypropylene, a 2-5 carbon atom.At least one side of film can comprise heat-sealing or press seal surface.Usually, heat-sealable material comprises homopolymer, multipolymer or terpolymer such as ethylene-propylene, ethylene-propylene-butene-1 and the polyvinylidene chloride polymkeric substance of ethene and propylene.Any material can contain processing aid or inorganic particle such as titania or space initiating agent increasing the whiteness or the color of substrate, or improves agglomeration preventing performance.

The isotactic polypropylene that the concrete thermoplasticity film that can help being coated with coating composition of the present invention is a molecular orientation.

After using habitual extruding technology that the polypropylene counterdie is extruded, heat this film and on vertical and horizontal, all stretch, make its molecular orientation.The alignment films that obtains all improves a lot on stretching and stiffness property

Usually, by dull and stereotyped extruding dies polyolefin resin such as polypropylene are extruded, and film is cast on the chilling roll, make its quenching about 200-250 ℃.Use the about 3-7 of vertical (MD) orientation machine stretched sheet then doubly, then doubly with the about 5-10 of horizontal (TD) orientation machine stretched sheet.

Substrate can comprise at least 3 tunics, and as can comprising one deck sandwich layer and two layers of skin, described sandwich layer comprises multipolymer or terpolymer or the Alathon that one deck at least in polypropylene and the skin is selected from propylene and ethene and/or butene-1.

In another embodiment of the present invention, substrate can comprise 5 tunics, as can comprising a sandwich layer, two middle layers that link to each other with central core and two skins, the polymkeric substance that the polymkeric substance at least one middle layer comprises the one deck at least in polypropylene and two skins comprises multipolymer or the terpolymer or the Alathon of propylene and ethene and/or butene-1.

Coating composition of the present invention can be applied to the two-sided of film, but it may cause agglomeration problems.Perhaps, can accept the another kind of coating composition of surface coated of an opposite side on surface with toner.This opposite side of available heat-sealing or lubricating modification material coated film.

Coated film can be attached on the base material, this base material can be given substrate stiffness or other characteristics.Suitable substrates comprises paper, cardboard, cardboard or reinvents metal forming, cellulosic fabric and heat pressure adhesive polyolefin nonwoven fabrics such as heavy sheet material such as flitch (as another polymer film or laminate), aluminium foil.Be fit to film layers be depressed into bonding agent on the base material can be hot melt or can be at the bonding agent or the aqueous binder of room temperature sealing.

Bottoming agent can strengthen the bonding of coating of the present invention and uncoated film.Usually, bottoming agent is that uncoated film is had fine fusible polymkeric substance such as polyethyleneimine and epoxy resin.

Usually before with the composition coated film that is mixed with at last of the present invention, can make the method processing film surface of film surface oxidation by for example flame or corona treatment or other, be enough to make the high energy surface environment of bottoming agent or other adhesion of coatings with generation.The method of corona treatment is as follows: when high-voltage corona discharge is carried out on the film surface, make film by the electrode of spacing is arranged.After electronic processing is carried out on the film surface, but coating composition.

Coating can be in machine-direction oriented back but is applied on the substrate so that the form of aqueous emulsion is online before horizontal orientation.This operation is described in U.S. Patent No. 5,451, in 460.Can before coating, carry out surface treatment by the film to uniaxial tension.

Perhaps, available any customary way is non-is coated with online.For example, can use method coated film such as roller coat, spraying, clearance type coating or dip-coating.Notch board print roll coating or to reverse the coating of direct notch board also be feasible method.Excessive coating fluid can be removed with compression roller or blade coating cutter.

Irrelevant with these methods, the control coating weight is to obtain smooth, equally distributed coating after drying.Usually, coating weight is about 0.1-10g/m ²Scope in.

In one embodiment of the invention, can be coated with by coextrusion.

Though between the 20-100 micron, substrate can be any desired thickness to thickness usually when using high-speed equipment.

The invention provides a kind of film that is suitable as mark sheet stock structure (label stock structure).The mark sheet stock need have the bounding force of good printing ink retentivity and itself and contact adhesive should be better than the bounding force of bonding agent and adherent layer.

Suitable strippable mark sheet stock often is the aggregation of component.In this type of aggregation, its component comprises: optional substrate pad, adherent layer on substrate pad and the dough sheet (facestock) with bonding agent.Described bonding agent is between substrate pad and dough sheet.Dough sheet strippingly is bonded on the adherent layer of substrate pad.When bonding agent when being pressure-sensitive, adherent layer is on substrate pad.In other cases, bonding agent can activate by heating or adding solvent etc.When bonding agent when not being pressure-sensitive, do not need anti-sticking patch usually.

Be basic unit or sandwich layer as the mark sheet stock, compound film of the present invention forms normally White-opalescent of material, to form the contrast background with in the above printed article.

Typical contact adhesive is a hotmelt, as SIS (" S-246 ", " Duro-tak " serial bonding agent that National Starch company sells that Fasson company sells comprise " Duro-tak 9866 " and " Duro-tak 4206 "); Styrene-ethylene butylene-styrene segmented copolymer (" Duro-tak 9684 " that National Starch company sells); Aqueous pressure-sensitive adhesive, as acrylic emulsion (Uncal company with production number 9612,9646 and 9202 product solds, Air Products company with ProductName GP-2, LC-31 and SP-27 product sold, Rohm ﹠amp; Haas company with ProductName PS-67 and National Starch company with ProductName Nacor-4537 product sold), ethene-vinyl acetate copolymer emulsion (National Starch company is with ProductName " EVA-Tak 9685 " and " EVA-Tak9715 " product sold), rubber-resin emulsion (Dyna-tech company is with ProductName 2412 product solds); With the solvent-borne type contact adhesive, as the acrylic compounds (National Starch company is with ProductName " Duro-tak 1068 " and " Duro-tak1077 " product sold) and the rubber-type compound (National Starch company is with ProductName " Duro-tak 6172 " and " Duro-tak 9718 " product sold) of thermoplastic propene's acids (National Starch company is with ProductName " Duro-tak 2434 " product sold), self-crosslinking.

Described anti-sticking patch is a siloxane anti-stick coating substrate.Described substrate is bright and clean especially kraft, glassine, polyester (as polyethylene terephthalate), the kraft of polyethylene coating, the kraft of polypropylene coating or the thermoplasticity substrate that Mobil Chemical company sells with ProductName " Proliner ".Usually, these substrates are with dimethyl silicone polymer (" Syl-off 7686 " that the Dow Corning company sells) coating of the silicone release coating of heat curings such as crosslinked vinyl-functional.

The anti-sticking patch that comprises kraft, the polyethylene terephthalate of substrate such as glassine, overbrushing layer, polypropylene, tygon or polystyrene orientation or cast can be coated with radiation curing or electronic beam curing siloxane such as UV curing silicone (" UV9300 ", " UV9315 " and " UV9310C " that GE sells) and electronic beam curing siloxane (" RC726 " and " RC705 " of the sale of Goldschmidt company).

Usually, contact adhesive is coated on the anti-sticking patch, and usually about 35-125 ℃ of oven for drying.Yet baking temperature often depends on the type of bonding agent.Solvent type adhesive is usually about 66 ℃ of dryings, and aqueous binder is usually about 93 ℃ of dryings.After the drying, antiseized spacer layer is pressed in the side that the bonding agent anchor undercoat of mark dough sheet is crossed.

Can use any adaptation or for using Xerox that liquid toner designs such as " Omnius " or " E-Print 1000 types " duplicating machine of Indigo company that toner is applied on the coated film.Embodiments of the invention

With 4 kinds of coating composition coating film samples that make by following embodiment.Embodiment 1

1146g ethylene-acrylic acid copolymer emulsion (MICHEM 4983 that Michelman company sells), 57.3g Brazil wax (M-215 that Michelman company sells), 1.15g talcum and 0.85g pyrogenic silica (SYLOID 42 that Davison department of WR Grace company sells) are mixed the preparation coating composition.All components is added in the aqueous solution.Add entry, the solid content that makes final coating composition is 5%.Embodiment 2

1130g ethylene-acrylic acid copolymer emulsion (MICHEM 4983), 56.5g Brazil wax (M-215), 1.13g talcum, 0.85g pyrogenic silica (SYLOID 42) and 4.24g NaOH are mixed the preparation coating composition.Add entry, the solid content that makes final coating composition is 5%.Embodiment 3

Ethylene-acrylic acid copolymer emulsion with 19.9%, 10.3% acrylate copolymer, 32.4% carclazyte, 25.8% talcum, 6.4% titania and 5.2% commercial antistatics suspension aids and antigassing additive mix in aqueous solution, the coating composition that preparation is identical with the embodiment 3 of serial number 7811.It is about 46-48% that this potpourri is prepared into solid concentration.Comparing embodiment

962g acrylic acid-methacrylic acid copolymer (90XWO67 that Valspar company sells), 3.17g NaOH, 18.52g pyrogenic silica (SYLOID 42), 52.9g wax (M-215) and 0.53g talcum are mixed the preparation acrylic coating.Add entry, the solid content that makes final coating composition is 5%.The evaluation of coating

To be coated on by each coating that the foregoing description makes have three layers, on the surface of the polypropylene film of biaxial orienting, described polypropylene film is to make by coetrusion, gross thickness is the 25.4-31.75 micron.

Use standard notch board apparatus for coating and technology are coated with.Before coating, film is carried out corona treatment, and the polyethyleneimine bottoming agent is coated on the surface treated.Be about 0.1-4g/m in lip-deep each embodiment coating general assembly (TW) of crossing through orientation, corona discharge, bottoming and dried ²

On " Omnius " of Indigo company Xerox, use SW class Electroink type liquid toner that coated film is tested.Ink transfer is maintained at about 120 ℃ with felt (blanket).Estimate lithographic film by visual inspection printed document quality.The evaluation of ink transfer is to be transferred to the good degree of film from ink transfer with felt by visual check printing ink, for example ink coating whether intact, have and do not bubble and occur that striped carries out.To each test provide (ink transfer is complete), better (ink transfer almost completely), in (ink transfer is incomplete), (printing ink almost shifts) and poor (printing ink does not shift, and all printing ink are still stayed the ink transfer of duplicating machine with on the felt) 5 kinds of opinion ratings down.

Cohesive by T-type disbonded test off line evaluation printing ink in the disbonded test of T-type, is placed on the Scotch610 adhesive tape on the lithographic film, and adhesive tape (but the one end is unclamped) then down firmly rubs.An end of catching adhesive tape to unclamp with hand is promptly peeled off it from film then.After with the printing ink coating, promptly carry out the first time immediately, then aging ink was carried out the second time after 24 hours.Check that having on the adhesive tape denys any ink residue thing, and check the area that printing ink disappears on the film.To each test provide (no printing ink by adhesive tape sticking go), better (almost do not have printing ink by adhesive tape is sticking go), in (have some printing ink by adhesive tape is sticking go), (nearly all printing ink by adhesive tape is sticking go) and poor (all printing ink is glued by adhesive tape and goes) 5 kinds of opinion ratings down.

Embodiment	Ink transfer	Printing ink is bonding for the first time	Printing ink after 24 hours is bonding
				?????1	Good	Good	Good
?????2	Good	Good	Good
				?????3	Good	Better	Good
Comparing embodiment	Difference	Not test (N.T.)	Not test (N.T.)

Embodiment 1,2 and 3 coating test result show that ethylene-acrylic acid copolymer base formulation for coating material thing can be provided for the liquid toner acceptor of electrostatic imaging or xeroprinting effectively.In embodiment 3, after aging 24 hours, printing ink is not glued by adhesive tape and goes.By contrast, all acrylic formulation for coating material things are all invalid, and printing ink is not transferred on the film with felt from ink transfer, and all printing ink are still stayed the ink transfer of duplicating machine with on the felt.Because no ink transfer is to film, so can't carry out the printing ink bond test.

Claims (9)

1. xeroprinting thermoplasticity film, this film comprises the polyolefin substrate, described polyolefin substrate has the coating of the toner that acceptance obtains by liquid toner composition at least in the one side, this coating comprises the multipolymer that is obtained by the carboxylic acid that contains the vinyl unsaturated link and electrostatic applications method for producing toner and toner is in the above arranged.

2. xeroprinting thermoplasticity film as claimed in claim 1 is characterized in that the described multipolymer that is obtained by the carboxylic acid that contains the vinyl unsaturated link is the multipolymer of ethene and acrylic or methacrylic acid.

3. xeroprinting thermoplasticity film as claimed in claim 2 is characterized in that, the carboxylate groups of described acrylic or methacrylic acid is selected from the metal neutralization of sodium, potassium, calcium or zinc.

4. as claim 1,2 or 3 described xeroprinting thermoplasticity films, it is characterized in that coating also comprises anticaking agent/lubricant.

5. as claim 1,2,3 or 4 described xeroprinting thermoplasticity films, it is characterized in that coating also comprises silicon dioxide.

6. as claim 1 or 5 described xeroprinting thermoplasticity films, it is characterized in that coating also comprises wax.

7. as each described xeroprinting thermoplasticity film in the above-mentioned claim, it is characterized in that the thermoplasticity substrate comprises polypropylene.

8. typographic(al) mark sheet stock structure, this sheet stock structure comprises the xeroprinting thermoplasticity film of each the described polyolefin substrate with aforesaid right requirement, and described polyolefin substrate has and is coated on its at least one lip-deep bonding agent.

9. typographic(al) mark sheet stock structure as claimed in claim 8 is characterized in that, also comprises the substrate pad that strippingly is bonded on the bonding agent.