SE190866C1

SE190866C1 -

Info

Publication number: SE190866C1
Authority: SE
Publication date: 1964-01-01

Description

Uppfinnare: H A Berg Prioritet begard Iran den 2 november 1959 (USA) Foreliggande uppfinning avser ett bbjligt overfOringsfilmblad, som kannetecknas darav, att det bestar av en lattbojlig och strackbar, reflexreflekterande overforingsfilm och ett dimensionsstabilt, i torrt tillsthnd avdragbart, tillfalligt bararskikt, varvid overforingsfilmen inbegriper ett skikt av utskjutande, genomskinliga glasparlor med underliggande reflektionsorgan, vilka parlor aro partiellt inbaddade och permanent fasta i ett b5jligt och strackbart bindeskikt och ett klistertiverdrag pa baksidan av bindeskiktet, varvid det 1 torrt tillstand avdragbara bararskiktet har ett lag adhesion uppvisande plastoverdrag, i vilket de utskjutande glasparlorna av overforingsfilmen aro tillfalligt inbaddade. Inventor: HA Berg Priority requested from Iran on November 2, 1959 (USA). comprises a layer of projecting, transparent glass beads with underlying reflectors, which beads are partially embedded and permanently fixed in a flexible and extensible bonding layer and an adhesive coating on the back of the bonding layer, the dry state peelable carrier layer having a layer of adhesive in which plastic the protruding glass beads of the transfer film are randomly embedded.

Uppfinningen avser aven ett salt vid framstallning av ett bajligt, reflexreflekterande 45verforingsfilmb1ad av ovan angivet slag, och della shit kannetecknas (Mr" att ett skikt av glasparlor inbaddas partiellt i ett avtagbart termoplastskikt, som uppvisar lag adhesion gerttemot parlorna och lag adhesion gentemot ett permanent parlbindeskikt for parlorna, vilket sedan anbringas Over de partier av parlorna, som utskjuta fran plastskiktet, varvid parlorna permanent ,fastas i partiellt inbaddat lage i det permanenta parlbindeskiklet. The invention also relates to a salt in the manufacture of a flexible, reflective reflective transfer film of the above type, and some of the shit can be seen (Mr for the beads, which are then applied over the portions of the beads projecting from the plastic layer, the beads being permanently fixed in a partially embedded layer in the permanent bead binding layer.

Overfiiringsfilmbladet enligt uppfinningen fir sarskilt anvandbart vid framstallning av reflexreflekterande marken och tecken pa bojliga underlag, t. ex. olika plagg, draperier och tyger. Kavajer, rocker, huvudbonader, regnrockar, galoscher och liknande artiklar kunna bekvamt markas med reflexreflekterande tecken med tillhjalp av overforingsfilmbladet enligt uppfinningen. The transfer film sheet according to the invention is particularly useful in the production of reflective ground and signs of flexible substrates, e.g. various garments, draperies and fabrics. Jackets, coats, headgear, raincoats, galoshes and similar articles can be conveniently marked with reflective reflecting signs by means of the transfer film sheet according to the invention.

SA vitt bekant, har ingen tidigare med framgang framstallt ett reflexreflekterande Overfaringsfilmblad, fran vilket ett bararskikt over den reflexreflekterande ytan ken avdragas i torrt tillstand under kvarlamnande pa ett plagg av ett sakert vidhaftande, mot inverkan ay vader och vane motstandskraftigt, bajligt, reflexreflekterande marke eller tecken, vilket omedelbart är effektivt sasom en reflexreflekterande anordning, vilken an fri Fran fororeningar pa sin knottriga, reflexreflekterande yta. As is well known, no one has previously successfully produced a reflective reflective film sheet from which a bar layer over the reflective surface is peeled off in a dry condition while leaving on a garment of a securely adhering, impact resistant and abrasive, reflective, reflective or reflective effect. sign, which is immediately effective as a reflex reflecting device, which is free of contaminants on its lumpy, reflective reflecting surface.

Uppfinningen skall beskrivas narmare i det foljande under hanvisning till bifogade ritfling, som visar ett utfOringsexempel. Fig. 1 visar i tvarsektion ett overforingsfilmblad enligt uppfinningen i den form, som filmbladet har vid leverans till en anvandare. Fig. 2 visor en tvErsektion genom en reflexreflekterande overforingsfilm av filmbladet enligt fig. 1, fast pa en underliggande tygyta. The invention will be described in more detail in the following with reference to the accompanying drawing, which shows an exemplary embodiment. Fig. 1 shows in cross section a transfer film sheet according to the invention in the form which the film sheet has upon delivery to a user. Fig. 2 shows a cross section through a reflective reflective transfer film of the film sheet according to Fig. 1, fixed on an underlying fabric surface.

Fig. 1 visar en tvarsektion genom det bojliga overfOringsfilmbladet enligt uppfinningen, sadant detta kommer fran tillverkningen. Filmbladet har ett dimensionsstabilt, 1 torrt tillstand avdragbart, tillfälligt bararskikt, sent bestar av en dimensionsstabil barstomme 1 av arkmaterial med ett darvid haftande, lag adhesion. uppvisande plastOverdrag 2. Detta hararskikt 1, 2 Or avtagbart sasom en enhet fran resten ay filmbladet. I det lag adhesion uppvisande plastoverdraget inskjuta till en. del genomskinliga glasparlor 3, som till sin Ovriga del aro sa kraftigt inbaddade och permanent fasta i ett bojligt och straekbart, reflekterande pigment innehallande bindeskikt 4, att parlorna kvarstanna i bindeskiktet 4 vid avlagsnandet ay bararskiktet 1, 2. Parlorna 3 och bindeskiktet 4 bilda del ay filmbladets lattbojliga och strackbara, reflexreflekterande Overforingsfilm. Denna liar narmast bindeskiktet 1 en biijlig och strackbar varmesparr- film 5, ph vars fran bindeskiktet 4 vanda side finnes ett varmeaktiverhart (eller medelst los- 2— — ningsmedel aktiverbart) klisterskikt 6 for fastsattning av Overforingsfilm.en 3-6 pa ett kladesplagg eller annat underlag. Till skyd- dande av klisterskiktets 6 frau filmen 5 vanda sida mot fororening fore anbringandet pa ett underlag är pa klisterskiktets 6 namnda sida avtagbart fast ett lag adhesion uppvisande, tillfalligt tackskikt 7. Fig. 1 shows a cross section through the flexible transfer film sheet according to the invention, so that this comes from the manufacture. The film sheet has a dimensionally stable, 1 dry state peelable, temporary bar layer, late consists of a dimensionally stable bar body 1 of sheet material with an adherent, low adhesion. exhibiting plasticCover 2. This resin layer 1, 2 Or removable as a unit from the rest ay the film sheet. In the layer of adhesion exhibiting the plastic coating insert into one. part transparent glass beads 3, which for their other part are so heavily embedded and permanently fixed in a flexible and stretchable, reflective pigment containing bonding layer 4, that the beads remain in the bonding layer 4 upon removal of the bar layer 1, 2. The beads 3 and the bonding layer 4 form part ay filmbladet's easily flexible and stretchable, reflective reflective transfer film. This closest to the bonding layer 1 is a flexible and stretchable heat-saving film 5, ph from which, from the water side of the bonding layer 4, there is a heat activating resin (or solvent-activatable) adhesive layer 6 for attaching the transfer film. other material. To protect the water side of the adhesive layer 6 from the film 5 against contamination before application to a substrate, on the said side of the adhesive layer 6 it is removable to have a layer of adhesion having a temporary thank-you layer 7.

Det är viktigt, att det tillfalliga, avtagbara tackskiktet 7 uppvisar mindre vidhaftning vid klisterskiktet 6 an den vidhaftning, med vilken det i torrt tillstand avdragbara bararskiktets 1, 2 plastoverdrag 2 haftar fast vid ytan av parlorna 3 och bindeskiktet 4 av den reflexreflekterande overforingsfilmen, sa att avlagsnande av det tillfälliga tackskiktet 7 Iran klisterskiktet 6 Batt kan utforas utan att bryta forbandet mellan den reflexreflekterande Overfaringsfilmen 3-6 och bararskiktet 1, 2. For att minska adhesionen mellan skikten 6 och 7 är det lampligt att pragla ytan av det avtagbara tackskiktet 7 f8re dettas anbringande pa klisterskiktet 6. Harigenom minskas beroringsytan mellan det avtagbara tackskiktet och klisterskiktet. It is important that the temporary, removable roof layer 7 has less adhesion to the adhesive layer 6 than the adhesion with which the plastic coating 2, 2 of the peelable carrier layer 1, 2 adheres to the surface of the beads 3 and the bonding layer 4 of the reflective transfer film, that removal of the temporary roofing layer 7 Iran adhesive layer 6 Batt can be performed without breaking the connection between the reflective reflective film 3-6 and the bar layer 1, 2. To reduce the adhesion between the layers 6 and 7, it is convenient to emboss the surface of the removable roofing layer 7. before applying it to the adhesive layer 6. This reduces the contact surface between the removable roof layer and the adhesive layer.

I fig. 2 visas overforingsfilmen 3-6 enligt fig. 1 fastsatt pa ett tygunderlag 8. For denna fastsattning tillskares forst ett Overforingsfilmblad enligt fig. 1 till lamplig form, varpa. tackskiktet 7 avlagsnas och det av bestandsdelarna 1-6 bildade laminatet anbringas pa tyget 8 samt pressas mot detta under uppvarmning, t. ex. medelst ett strykjarn, for fastande av det varmeaktiverbara klisterskiktet 6 vid tyget 8. Harefter avdrages bararskiktet 1, 2 far frilaggning av parlorna 3. Tack vare bararskiktet 1, 2 ãr overforingsfilmbladet latt att hantera under tillskarningen och fastsattningen pa tyget 8. OverfOringsfilmen 3-6 ãr sa tunn och lattbojlig, att det skulle vara ytterst svart att tillskara och fasta densamma, om den ej yore fasthaftad vid bararskiktet 1,2. Det ma papekas, att klisterskiktet 6, sasom framgar av fig. 2, Mir pressat in i tygets 8 vavnad, sã att myeket litet av Overforingsfilmen 3-6 utskjuter fran eller stracker sig ovanfor ytan av tyget sjalvt. Den bojliga, varmesparrande filmen 5 och parlbindeskiktet 4 hava bada benagenhet att ansmyga sig till sma oregelbundenheter i tygets vavnad, men de genomskinliga parlorna 3 forbliva fast bundna i parlbindeskiktet och give kraftig reflexreflektion. Fig. 2 shows the transfer film 3-6 according to Fig. 1 fastened to a fabric base 8. For this fastening, a transfer film sheet according to Fig. 1 is first cut into a suitable shape, warp. the roof layer 7 is removed and the laminate formed by the components 1-6 is applied to the fabric 8 and pressed against it during heating, e.g. by means of an iron, for fastening the heat-activatable adhesive layer 6 to the fabric 8. After this, the bar layer 1, 2 is peeled off before the beads 3 are exposed. is so thin and easily bent that it would be extremely black to cut and fasten it, if it was not attached to the bar layer 1,2. It must be noted that the adhesive layer 6, as shown in Fig. 2, is pressed into the fabric of the fabric 8, so that very little of the transfer film 3-6 protrudes from or extends above the surface of the fabric itself. The flexible, heat-saving film 5 and the bead-binding layer 4 both have a tendency to creep into small irregularities in the fabric of the fabric, but the transparent beads 3 remain firmly bound in the bead-binding layer and give strong reflective reflection.

Sattet att framstalla overforingsfilmbladet shall beskrivas i samband med fig. 1. En lamplig, dimensionsstabil barstomme 1 (som ieke är termoplastisk under de forhallanden, under vilka filmbladet framstalles och anvandes) overdrages med ett skikt 2 av plastmaterial, som uppvisar lag vidhaftning vid glasparlor 3 och vid det anvanda parlbindematerialet 4 i 8verforingsfilmen 3-6. For att uppna mycket goda slutresultat bör dessutom plastOverdraget 2 vid det foredragna till verkningssattet vara termoplastiskt och Tipp-visa en smaltpunkt mom det ungefarliga om- radet 65-177' C, foretradesvis 107-10 C, sasom kommer att framga av det .foljande. Bararskiktet 1, 2 svepes runt en varm trum- ma med den dimensionsstabila barstommen 1 narmast trumman, som upphettas till en temperatur, vilken är tillracklig for att bringa termoplastliverdraget 2 att bliva klibbigt. The method of producing the transfer film sheet shall be described in connection with Fig. 1. A suitable, dimensionally stable bar body 1 (which is not thermoplastic under the conditions under which the film sheet is manufactured and used) is coated with a layer 2 of plastic material which exhibits low adhesion to glass beads 3. and in the used bead material 4 in the transfer film 3-6. In order to obtain very good end results, the plastic coating 2 should also be thermoplastic in the preferred mode of action and tip-show a melting point between the approximate range 65-177 ° C, preferably 107-10 ° C, as will be apparent from the following. The bar layer 1, 2 is wrapped around a hot drum with the dimensionally stable bar body 1 closest to the drum, which is heated to a temperature which is sufficient to make the thermoplastic coating 2 sticky.

Samtidigt doppas det klibbiga Overdraget 2 i en massa av sma glasparlor 3 i ett trag under den varma trumman (dvs. trumman bringas att doppa ned i en parlmassa i ett trag under trumman). Genom klibbigheten av plastoverdraget 2 bringas ett enkelt skikt av glasparlor 3 att fastna pa Overdraget. Darpa upphettas bararskiktet 1, 2 med sitt enkla skikt av parlor 3, medan bararskiktet är i huvudsak plant, foretradesvis med den dimensionsstabila barstommen 1 underst, till en tillracklig temperatur for att plastoverdraget 2 skall mjukna och tillata parlorna 3 att sjunka eller genom kapillarkraft sugas in i plastoverdraget. Den grad, i vilken parlorna sjunka in i plastoverdraget, kan regleras overraskande latt och kan ytterligare regleras genom avpassning av upphettningstid och upphettningstemperatur. Det senare beror givetvis pa de ifragavarande smaltegenskaperna av det pa barstommen 1 anvanda plastoverdraget 2. Det am viktigt, att parlorna 3 tillatas sjunka atminstone omkring 15 % (foretradesviS minst 30 %) av sin diameter in i plastoverdraget 2, och parlorna kunna fâ sjunka upp till omkring 50 % av sin. diameter. At the same time, the sticky coating 2 is dipped in a mass of small glass beads 3 in a trough under the hot drum (ie the drum is made to dip into a bead mass in a trough under the drum). Due to the stickiness of the plastic coating 2, a simple layer of glass beads 3 is caused to adhere to the coating. Darpa heats the bar layer 1, 2 with its simple layer of beads 3, while the bar layer is substantially flat, preferably with the dimensionally stable bar body 1 at the bottom, to a sufficient temperature for the plastic cover 2 to soften and allow the beads 3 to sink or be sucked in by capillary force. in the plastic cover. The degree to which the beads sink into the plastic coating can be adjusted surprisingly easily and can be further adjusted by adjusting the heating time and heating temperature. The latter is of course due to the narrowing properties of the plastic coating 2 used on the bar body 1. It is important that the beads 3 are allowed to sink at least about 15% (preferably at least 30%) of their diameter into the plastic coating 2, and the beads can sink up to about 50% of its. diameter.

Det ar lampligt att pafdra plastoverdraget 2 pa barstommen 1 med en tjocklek av ungefar endast halften av medeldiametern av de vid framstallning av filmbladet anvanda glasparlorna 3. Om exempelvis glaspartorna hava en ungefarlig diameter av 0,005 cm, ãr det lampligt att begagna ett plastoverdrag 2 med en tjocklek av ungefar 0,0025 em, eftersom det harigenom blir majligt att utan storre omsorg smalta plastoverdraget och tillata parlorna sjunka in i detta aven i sadan grad, att parlorna komma i tangentiell beroring med ytan av den dimensionsstabila barstommen 1. Ett annat skal till att an-vanda ett tamligen tunt plastOverdrag är, att de for fastsattning plagg medelst ett strykjarn eller dylikt avsedda filmbladen bora uppvisa god varme8verforing genom det avdragbara bararskiktet 1, 2, vilken egenskap lattare uppnas, da. tunt Overdrag 2 begagnas. It is appropriate to apply the plastic coating 2 to the bar body 1 with a thickness of only about half the average diameter of the glass beads 3 used in the production of the film sheet. thickness of about 0.0025 cm, as it thereby becomes possible to melt the plastic coating without much care and allow the beads to sink into this vein to such an extent that the beads come into tangential contact with the surface of the dimensionally stable bar body 1. Another shell to The use of a rather thin plastic coating is that the garments for fastening by means of an iron or similar film sheets should have good heat transfer through the peelable carrier layer 1, 2, which property is more easily achieved. tunt Transfer 2 is used.

De vid framstallning av filmbladet begagnade glasparlorna 3 kunna have olika diametrar, men parlor, som have storre diameter an 0,013 cm, have benagenhet att give en alltfOr knottrig eller kornig, reflexreflekterande yta pa den reflexreflekterande overformgsfilmen 3-6. I sjalva verket aro glasparlor med storre diameter an 100 y i allmanhet ieke i3nskvarda, och det är att fOredraga att — —3 anvanda glasparlor med en diameter av upp till 7,u. Ehuru parlor med ytterst liten diameter (t. ex. omkring it) kunna begagnas vid ,framstfillning av filmbladet, har det I allmanhet visat sig, att det fir Mmpligast att begagna parlor med stOrre diameter an g. The glass beads 3 used in the production of the film sheet may have different diameters, but beads having a diameter greater than 0.013 cm have a tendency to give an overly lumpy or grainy, reflective reflective surface on the reflective reflective film 3-6. In fact, glass beads with a diameter greater than 100 y are generally not difficult to remove, and it is preferable to use glass beads with a diameter of up to 7 .mu.m. Although beads with extremely small diameters (eg around it) can be used in the production of the film sheet, it has generally been found that it is most difficult to use beads with a larger diameter.

Glasparlorna 3 bora lampligen hava ett brytningsindex (nD) av omkring 1,9, men godtagbara resultat uppnas vid begagnande av parlor med ett sá lagt brytningsindex som 1,7 eller 'ett brytningsindex av upp till 2,0. For att uppna sa kraftig reflexreflektion som majligt bar man emellertid begagna parlor med ett effektivt brytningsindex av omkring 1,9. The glass beads 3 should suitably have a refractive index (nD) of about 1.9, but acceptable results are obtained when using beads with a set refractive index such as 1.7 or a refractive index of up to 2.0. However, in order to achieve as strong a reflex reflection as possible, beads with an effective refractive index of about 1.9 were used.

Efter partiell inbaddning av parlorna 3 i plastOverdraget 2, Mikes detta svalna till rumstemperatur. Parlorna forses sedan med ett halvsfariskt reflektorOverdrag av silver, aluminium eller annan ljusreflekterande me-tall genom fingavsattning, eller ocksa 6.stadkommes det erforderliga, reflekterande organet for glasparlorna genom hegagnande av ett parlbindemedel, som innehaller reflekterande pigment. Exempelvis kunna pigmentflingor av aluminium, koppar eller annat reflekterande metallmaterial inblandas i parlbindeskiktet 4, eller ocksa kan ett sadant reflekterande pigment som titandioxid begagnas, om sa onskas. Da reflekterande pigment begagnas I parlbindemedlet (vilket for narvarande foredrages), anvandes ett pa gummi baserat Mister, som Innehalier det reflekterande pigmentet, for hildande av parlbindeskiktet 4, vilket samtidigt medlar, att parlorna fOrses med tillhorande reflektionsorgan. Reflektionsorganen ligga under parlorna, da den ref lexreflekterande overforingsfilmen är pasatt for anvandning. Det pa gummi baserade bindemedlet med reflekterande pigment bringas i allmanhet att bilda bindeskiktet 4 over de utskjutande glasparlorna 3 i plastskiktet 2 under begagnande av ett sadant utspadningsmedel, sum ett organiskt lOsningsmedel. Losningsmedlet forangas frau overdraget 4 vid nagot forhOjd temperatur, och Overdraget kan hardas eller partiellt hfirdas vid detta tillverkningsstadium. Andra skikt av filmbladet uppbyggas därefter, och den varmesparrande filmen 5 pa-Hires lampligen fran en lamplig lOsning, foljt av torkning och hardning, och klisterskiktet 6 paltires likaledes lampligen Iran losning, foljt av torkning, varpa det tillffilliga, avtagbara, lag adhesion uppvisande tackskiktet 7 anbringas. After partial embedding of the beads 3 in the plastic coating 2, Mikes this cool to room temperature. The beads are then provided with a semi-hazardous reflector coating of silver, aluminum or other light-reflecting metal by finger deposition, or the required reflective member for the glass beads is also provided by enclosing a bead binder containing reflective pigments. For example, pigment flakes of aluminum, copper or other reflective metal material may be mixed into the bead layer 4, or a reflective pigment such as titanium dioxide may also be used, if desired. When reflective pigments are used in the bead binder (which is presently preferred), a rubber-based Mister, which contains the reflective pigment, is used to cure the bead binder layer 4, which at the same time mediates the beads being provided with associated reflectors. The reflecting means lie below the beads, as the reflective reflective transfer film is suitable for use. The rubber-based adhesive with reflective pigment is generally caused to form the adhesive layer 4 over the projecting glass beads 3 in the plastic layer 2 using such a diluent, including an organic solvent. The solvent is evaporated from the coating 4 at a slightly elevated temperature, and the coating can be cured or partially cured at this stage of manufacture. Second layers of the film sheet are then built up, and the heat-saving film 5 pa-Hires suitably from a suitable solution, followed by drying and curing, and the adhesive layer 6 is also paltires suitably Iran solution, followed by drying, warping the temporary, removable, low adhesion layer. 7 fitted.

!Sasom ett exempel pa framstallning av ett overforingsfilmblad enligt uppfinningen Overdrogs ett kalandrerat, ungefar (Lan cm tjockt papper med ett 0,03 cm tjockt skikt av polyetylen imed en molekylvikt av omkring 18000. Det polyetylenOverdragna papperet fordes sedan runt en varm cylinder, som var upphettad till ungefar 77° C, medan samtidigt polyetylenytan, som blivit klibbig genom uppvarmningen, Hordes genom ett hag med glas parlor under cylindern. Glasparlorna bade storlekar inom det ungefarliga omradet 45- 7g och ett brytningsindex av omkring 1,9. Det kalandrerade papperet med ett enkelt skikt av glasparlor, som uppfangats och haftat fast vid polyetlenoverdraget pa papperet, fOrdes darpa genom en ugn och utsattes f8r en temperatur av omkring 132° C, varvid var- je parti av polyetylenOverdraget utsattes fOr denna temperatur under omkring 2 mm. Vid denna uppvarmning bragtes tpolyetylenskik- tet att mjukna och draga parlorna in i sig. As an example of making a transfer film sheet according to the invention, a calendered, approximately 1 cm thick paper with a 0.03 cm thick layer of polyethylene was coated with a molecular weight of about 18,000. The polyethylene coated paper was then passed around a hot cylinder which was heated to about 77 ° C, while at the same time the polyethylene surface, which had become sticky due to the heating, was passed through a pad with glass beads under the cylinder. a single layer of glass beads, which were captured and adhered to the polyethylene coating on the paper, was passed through an oven and subjected to a temperature of about 132 ° C, each portion of the polyethylene coating being exposed to this temperature for about 2 mm. heating, the polyethylene layer was caused to soften and draw in the beads.

Parlorna drogos in i polyetylenskiktet till ett djup av omkring 40-50 % av parlornas dia- meter. Eftersom ett overdrag av polyetylen med en tjocklek, som uppgiek till ungefar halve diametern av parlorna, begagnades pa det kalandrerade papperet, skulle det varit moj- ligt att tillata glasparlorna att sjunka i huvudsak helt genom polyetylenskiktet till tan- gentiellt ber5ring .med det kalandrerade papperets yta. Det Mr beskrivna upphettningssteget medfOr emellertid liverraskande nog, att parlorna ga in i polyetylenskiktet i ungefar samma grad oberoende av sin storlek. The beads were drawn into the polyethylene layer to a depth of about 40-50% of the beads' diameter. Since a coating of polyethylene having a thickness of about half the diameter of the beads was used on the calendered paper, it would have been possible to allow the glass beads to sink substantially completely through the polyethylene layer for tangential contact with the calendered paper. surface. However, the heating step described above, surprisingly enough, causes the beads to enter the polyethylene layer to about the same degree regardless of their size.

Den polyetyleaverdragna banan avkyldes darpa, och ett parnbindemedel, som inneholl reflekterande pigment, anbragtes Over de utskjutande parlorna pa barkonstruktionen. Parlbindemedlet hade ftilj ande sanunansattning: Yiktdelar Gummiartad butadienakrylonitrilsampolymer, anskuffad frail B. F. Goodrich Company, A. F. S., under handelsnamnet »Hycar 1001» (omkring 55 delar butadien och 45 delar akrylo- 9, Dioktylftalatmjukgoringsmedel1,8 Ketonlosligt, vid uppviranning reage- rande (hardbart genom uppvarm- ning) fenolaldehydharts (% fast material i metylisobutylketon)15,6 Organiskt losningsmedel, etylenglykol- monoetyleter (Cellos°lve)5,6 Organiskt losningsmedel, metylisobutylketon Till detta bindemedel sattes 11,5 delar stora aluminiumflingor, som hade starre partikelstorlek fin omkring 20 u men mindre storlek an 1kt. Aluminiumflingor eller metallpulver med mindre partikelstorlek an omkring 200 g kravas i allmanhet for att uppna erforderlig grad av reflexreflektion vid konstruktioner av Mr beskrivna typ, och metallflingor eller reflekterande pigment med sa liten partikelstorlek som 2 eller 3 A kunna begagnas. The polyethylene coated web was then cooled, and a bead binder containing reflective pigment was applied over the protruding beads on the bar structure. The binder binder had the following composition: Bleached rubbery butadiene acrylonitrile copolymer, purchased from BF Goodrich Company, AFS, under the tradename "Hycar 1001" (about 55 parts of butadiene and 45 parts of acrylic). Phenol aldehyde resin (% solids in methyl isobutyl ketone) 15.6 Organic solvent, ethylene glycol monoethyl ether (Cellulose) 5.6 Organic solvent, methyl isobutyl ketone To this binder was added 11.5 parts of large aluminum flakes having a rigid particle size of about 20 Aluminum flakes or metal powders with a smaller particle size of about 200 g are generally required to achieve the required degree of reflection in constructions of the type described in Mr, and metal flakes or reflective pigments with a particle size as small as 2 or 3 A can be used. .

Klistermassan framstalldes pa ett valkant salt, inbegripande knadning av den gummiarlade sampolymeren och mjukgoringsmedlet fore losning av massan i losningsmedelsbland7 4— — ningen av Cellosolve och metylisobutylketon. Det losta eller finfordelade gummi- och mjukgoringsmedelsmaterialet blandades darpa med fenolaldehydhartslosningen, och aluminiumflingorna dispergerades i blandningen. Klistermassan bragtes darpa genom bestrykning att bilda ett overdrag pa de fran polyetylenLiverdraget utskjutande glasparlorna pa sa satt, att det erh8lls ett reflekterande pigment innehallande bindemedelsskikt, som i tont tillstand hade en tjocklek av omkring 0,0025 cm. Detta klisteroverdrag hade en vikt av omkring 2,1 —2,9 mg/em2. Detta parlbindeskikt torkades darpa genom forangning av losningsmedlet i skiktet under begagnande av nagot forhojda temperaturer och genom att smaningom h8ja temperaturen till 65° C. Vid upphettning till omkring 65° C erhalles icke nagon namnvard hardning av parlbindeskiktet vid detta stadium av tillverkningen, men en viss hardning kan iakttagas vid rang-Yang upphettning och är icke skadlig. Om sh onskas, kan i sjalva verket hardningen av parlbindeskiktet utforas vid detta stadium genom begagnande av forhojda temperaturer. The adhesive mass was prepared on a selective salt, including kneading of the rubbery copolymer and the plasticizer to dissolve the mass in the solvent mixture of Cellosolve and methyl isobutyl ketone. The loose or finely divided gum and plasticizer material was tightly mixed with the phenolaldehyde resin solution, and the aluminum flakes were dispersed in the mixture. The adhesive mass was applied by coating to form a coating on the glass beads projecting from the polyethylene coating in such a way that a reflective pigment containing adhesive layers was obtained, which in the thin state had a thickness of about 0.0025 cm. This adhesive coating had a weight of about 2.1-2.9 mg / cm2. This bead layer was dried by evaporating the solvent in the layer using slightly elevated temperatures and gradually raising the temperature to 65 ° C. When heated to about 65 ° C, no nominal curing of the bead layer is obtained at this stage of manufacture, hardening can be observed during rang-yang heating and is not harmful. In fact, if desired, the curing of the bead layer can be performed at this stage by using elevated temperatures.

Det ma papekas, att parlbindeskiktet, sasom antydes pa ritningen, har benagenhet, da det framstallts pa har angivet satt, att bilda en oregelbunden eller knottrig, fri yta efter torkning av lOsningsmedlet, i det att ytan an mer eller mindre krtikt runt parlorna i konstruktionen. Da mycket sma glasparlor anvandas och/eller da ett forhallandevis tjockt parlbindeskikt begagnas, kan denna knottrighet bliva ontarklig. It should be noted that the bead binder layer, as indicated in the drawing, has a tendency, as it has been shown, to form an irregular or lumpy, free surface after drying of the solvent, in that the surface is more or less cracked around the beads in the construction. . When very small glass beads are used and / or when a relatively thick bead layer is used, this lumpiness can become unbearable.

Ett varmesparrskikt eller ett skikt, som ibland har betraktats sasom ett overdrag av klistergrundningstyp, anbragtes darefter ovanpa parlbindeskiktet. En lamplig sammansattning f6r ett dylikt varmesparrskikt är finjande: Viktdelar Gummiartad butadienakrylonitrilsampolymer av samma slag som i parl- bindeskiktet12 Ketonlosligt, vid uppvarmning reagerande (yid uppvarmning stelnande) fenolaldehydharts (anskaffhart fran Vareum Company, A. F. A heat-saving layer or layer, which has sometimes been considered as an adhesive primer type coating, was then applied on top of the bead bonding layer. A suitable composition for such a heat-saving layer is as follows: Parts by weight Rubber-like butadiene acrylonitrile copolymer of the same kind as in the bead-bonding layer12

S., under handelsnamnet »Varcum 5476») 12,2 Dioktylftalatmjukgoringsmedel 2,4 Metylisobutylketon 73,0 Denna sparrskiktsmassa blandades pa kant satt, dvs. den gummiartade sampolymeren knadades tillsammans med mjukgoringsmedlet i en gummikna.dmaskin for att bliva tatt dispergerbar i metylisobutylketonen, och fenolaldehydhartspuliiret inblandades genom omr5ring. S., under the tradename »Varcum 5476») 12.2 Dioctyl phthalate plasticizer 2.4 Methyl isobutyl ketone 73.0 the gummy copolymer was kneaded together with the plasticizer in a rubber milling machine to be taken dispersible in the methyl isobutyl ketone, and the phenol aldehyde resin powder was mixed by stirring.

Den flytande rmassan .f5r varmesparrskiktet bragtes darpa genom bestrykning att bilda ett skikt pa parlbindeskiktet med tillracklig tj ocklek for att giva en torn film med en tjocklek av omkring 0,001 cm, varefter losningsmedlet forangades genom langsam hOjning av ternperaturen av konstruktionen till omkring 65° C. Darpa utfordes hardning av varmesparrskiktsoverdraget och parlbindeskiktet genom ytterligare hoj fling av temperaturen till omkring 132° C under 10-15 min. Lamplig hardning kan astadkommas genom langre eller kortare upphettning, men det ovannamnda varmehardningssteget anses tillfredsstallande och har givit en efter strackning sig sammandragande, gummiartad konstruktion med mot 15sningsmedel och varme motstandskraftig natur, vilken vid praktiskt begagnande pa tyger tillater vanlig och kemisk tvattning samt strykning. The liquid mass of the heat-saving layer was applied by coating to form a layer on the bead layer with sufficient thickness to give a tower film having a thickness of about 0.001 cm, after which the solvent was evaporated by slowly raising the temperature of the structure to about 65 ° C. Darpa is challenged to cure the heat-saving layer coating and the bead-bonding layer by further raising the temperature to about 132 ° C for 10-15 minutes. Lamp curing can be achieved by longer or shorter heating, but the above-mentioned heat curing step is considered satisfactory and has given a post-stretching, rubbery construction with resistance to heat and heat, which when practically used on fabrics allows ordinary and chemical washing and ironing.

Ett i torrt tillstand 0,007 cm tjockt skikt av ett genom uppvarmning och losningsmedel aktiverbart klister anbragtes darpa pa varmesparrskiktet. Klistret bestod av omkring 25 delar av en termoplastsampolymer, vilken bestod av 85 % vinylklorid och 15 % vinylacetat, omkring 16,7 delar dioktylftalatmjukg5ringsmedel och omkring 0,5 delar sadant aluminiumpulverpigment, som begagnas i parlhindeskiktet. Denna klistermassa dispergerades eller lostes i en blandning av omkring 38 delar metyletylketon och 19,8 delar toluen. Den losta klistermassan bragtes sedan genom bestrykning att bilda ett skikt pa varmesparrskiktet, och losningsmedlet forangades Iran overdraget vid nagot forhojd temperatur, dvs. vid omkring 65° C. In the dry state, a 0.007 cm thick layer of an adhesive which can be activated by heating and solvent was applied to the heat-saving layer. The adhesive consisted of about 25 parts of a thermoplastic copolymer, which consisted of 85% vinyl chloride and 15% vinyl acetate, about 16.7 parts of dioctyl phthalate plasticizer and about 0.5 parts of such aluminum powder pigment used in the paraffin layer. This adhesive was dispersed or lost in a mixture of about 38 parts of methyl ethyl ketone and 19.8 parts of toluene. The loosened adhesive mass was then applied by coating to form a layer on the heat-saving layer, and the solvent was evaporated to Iran coated at a slightly elevated temperature, i.e. at about 65 ° C.

Ovanpa den fria ytan av det torra klisteroverdraget anbragtes darph ett skyddande, tillfalligt, lag adhesion uppvisande tackskikt, som bestod av ett 0,01 cm tjockt ark av praglad polyetylenfilm. On top of the free surface of the dry adhesive coating, a protective, incidental, low adhesion layer of tack was applied, which consisted of a 0.01 cm thick sheet of embossed polyethylene film.

Den erhallna konstruktionen var liitt hanterbar och kunde tillskaras for bildande av emblem och tecken med onskad storlek. Det tillfalliga tackskiktet pa klistret kunde Hilt avlagsnas, varpa resten av konstruktionen kunde anbringas pa ett plagg, t. ex. en tygjacka. Artikeln kunde latt fastas pa det underliggande tyget med tillhj alp av ett varmt hushallsstrykjarn (temperaturen installd for bomull), varvid strykjarnet pressades mot barstommens 1 yta med svagt tryck under 20-30 sek. .Darpa avlagsnades barstommen 1 och dess plastoverdrag 2 genom avdragning, sâ snart det med strykjarn pressade omradet hunnit svalna nagot, t. ex. till en temperatur av .omkring 38° C. The resulting construction was difficult to handle and could be cut to form emblems and signs of the desired size. The temporary thank-you layer on the adhesive could be completely removed, whereupon the rest of the construction could be applied to a garment, e.g. a fabric jacket. The article could be fastened to the underlying fabric with the aid of a hot household iron (the temperature set for cotton), whereby the iron was pressed against the surface of the bar frame with a slight pressure for 20-30 sec. The bar frame 1 and its plastic cover 2 were removed by stripping as soon as the area pressed with an iron had cooled down somewhat, e.g. to a temperature of about 38 ° C.

Det ma papekas, att de ovannamnda materialen for de olika skikten av den ovan beskrivna konstruktionen kunna varieras utan frangaende av uppfinningsiden. Exempelvis kan gummibestandsdelen av parlbindeskiktet och varmesparrskiktet vara naturgummi eller annat konstgummi an den angivna butadienakrylonitrilsampolymeren. Likasa kan ett — — lampligt, genom uppyarmning aktiverbart klister eller genom losningsmedel aktiverbart klister (med eller utan pigment, utdrygnin.gsmedal .osv.) for konstruktionen framstallas under begagnande av andra vanliga termplastklistermaterial an mjukgjord polyvinylklorid eller liknande. Om st onskas, kunna andra termoplaster begagnas sasom bestandsdel av det i torrt tillstand avdragbara barskiktet 1, 2 och det lag adhesion uppvisande, till- fdlliga7 for klistret kan aven modifieras i fraga am sin sammansattning. Om sd onskas, kunna fargade, genomskinliga glasparlor begagnas i konstruktionen. Korainationer av fargade bindemedel (eller olikfargade lager i ett bindeskikt) och .olikfargade parlor karma begagnas for att astadkomma tilltalande mOnstereffekter, inbegripande effekter, som giva olika synintryck vid reflexreflektion oak vid betraktande I normalt dagslj us . It should be noted that the above-mentioned materials for the various layers of the construction described above can be varied without departing from the spirit of the invention. For example, the rubber component of the bead bonding layer and the heat saving layer may be natural rubber or other synthetic rubber of the indicated butadiene acrylonitrile copolymer. Similarly, a suitable lamp, heat-activatable adhesive or solvent-activatable adhesive (with or without pigment, extender, etc.) for the construction may be made using other conventional thermoplastic adhesive materials such as plasticized polyvinyl chloride or the like. If desired, other thermoplastics can be used as a component of the dry layer peelable bar layer 1, 2 and the layer of adhesion exhibited, suitable for the adhesive, can also be modified in question of its composition. If sd is desired, colored, transparent glass beads can be used in the construction. Corainations of colored binders (or differently colored layers in a binder layer) and .color-colored parlor karma are used to produce attractive pattern effects, including effects which give different visual impressions in reflex reflection even when viewed in normal daylight.

Claims

Patent claim:

Flexible transfer film sheet, characterized in that it consists of an easily flexible and stretchable, reflective reflective transfer film (3-6) and a dimensionally stable, in the dry state peelable, temporary bar layer (1, 2), the transfer film comprising a layer of protruding, transparent glass beads (3) with underlying reflection means, which beads are partially embedded and permanently fixed in a flexible and stretchable binder layer (4) and an adhesive coating (6) on the back of the binder layer, the dryer layer (1, 2) being peelable in the dry state A layer of adhesion having a plastic coating (2) in which the projecting glass beads of the transfer film are temporarily embedded.

Blade according to claim 1, characterized by a flexible and extensible heat-saving film (5) between the bead-binding layer (4) and the adhesive layer (6).

Bandage according to claim 1 or 2, characterized by a protective, low-adhesion-adhering, temporary thank-you layer (7) on the adhesive cover (6) on the back of the wedding film (3-6).

4. When used in the manufacture of a flexible, reflective reflective transfer film sheet according to claim 1, characterized in that a layer of glass beads (3) is partially embedded in a removable thermoplastic layer (2), which has low adhesion to the beads and low adhesion to a permanent bead layer. (4) for the beads, which bead bonding layer (1) is then applied over the portions of the beads projecting from the plastic layer, the beads being permanently fixed in partially embedded Ege in the permanent bead binder layer. Request publications: