SE203003C1

SE203003C1 -

Info

Publication number: SE203003C1
Authority: SE
Publication date: 1965-01-01

Description

Uppfinnare: V Weber Foreliggande uppfinning avser ett reflexreflekterande ark med ett flertal reflexreflekterande komplex, som hallas i fysisk orientering i ett ljusgenomslappande bindeskikt och som vartdera bestâ av en liten, sfarisk lins i optisk forbindning med en enskild, underliggande, speglande reflektor, varvid komplexert aro sd orienterade, att de giva reflexreflektion av ljus, som traffar framsidan av arket, och uppfinningen kannetetknas darav, att arket har ljusgenomslappande ytor mellan komplexen och att bindeskiktet bestar av bojligt, joke fibrost i varme formbart material. Inventor: V Weber The present invention relates to a reflective reflective sheet having a plurality of reflective reflecting complexes, which are held in physical orientation in a light transmissive binder layer and each consisting of a small, spherical lens in optical communication with a single, underlying, reflective reflector, the complex array sd oriented, that they give reflex reflection of light hitting the front of the sheet, and the invention is known from the fact that the sheet has light-transmitting surfaces between the complexes and that the bonding layer consists of flexible, joke fibrost in heat-moldable material.

De vdsentliga, optiska egenskaperna av arkmaterialet enligt uppfininngen hava uppnatts i ett enhetligt, bojligt arkmaterial, som lfittkan formas till olitka former. Exempelvis kart det formas till vad som ofta kallas »ogontarsform» genom vdrmepressning av materialet till shdan form och darefter avkylning. Efter kylningen kommer arkmaterialet att bibehalla den tilldelade formen och kommer att giva efter for krafter men fjadra tillbaka till den vid formningen tilldelade formen efter upphfivande av krafterna. The essential optical properties of the sheet material according to the invention have been obtained in a uniform, flexible sheet material, which can be formed into various shapes. For example, a map is formed into what is often called a "mold" by heat-pressing the material into such a shape and then cooling. After cooling, the sheet material will maintain the assigned shape and will yield to forces but spring back to the shape assigned during molding after the forces are released.

En av huvudfordelarna med uppfinningen ligger i mojligheten att d.stadko'mma storre variation och anpassbarhet hos konstruktionen av baklyktor for automobiler. Funktionsmassigt bor en baklykta joke blott reflektera som kommer frail en automobil, vilken ndrmar sig baklyktan, utan bor dven kunna utsdnda ljus sjalv. One of the main advantages of the invention lies in the possibility of achieving greater variation and adaptability in the construction of taillights for automobiles. Functionally, a taillight joke should only reflect what comes from a car, which changes the taillight, but should also be able to emit light itself.

Vanligen dro baklyktor sa konstruerade, att en liten, elektrisk lampa dr anbragt i brannpunkten av en elliptisk reflektor med en Ains» anordnad Over den oppna anden av den elliptiska reflektorn. Linsen kan eventuellt konvergera eller divergera ljuset. Usually, taillights were so constructed that a small electric lamp placed at the focal point of an elliptical reflector with an Ains' arranged over the open spirit of the elliptical reflector. The lens may converge or diverge light.

En tidigare konstruktion f8r baklyktor har syftat till anvandning av linser air polymetylmetakrylat, vilka linser haft tetraedrar pa sin insida, vilka tjanat till att reflektera ljus, som traf far linsen fran en yttre Ulla, men derma funktion har utforts i huvudsak endast i &Aga om ljus, som riktats i huvudsak vinkelrdtt mot linsens yttre yta. Ettt polymetylmetakrylat„ som har artvants, är kommersiellt kant under handelsnamnet »Lucite», och sadana iinser hava ibland kallats Amcite-linser». A previous design for taillights has been intended for the use of lenses air polymethyl methacrylate, which lenses had tetrahedra on their inside, which served to reflect light, which hit the lens from an outer Ulla, but this function has been performed mainly only in & Aga om lys , which is directed substantially perpendicular to the outer surface of the lens. A polymethyl methacrylate "having a species glove" is a commercial edge under the trade name "Lucite", and such lenses have sometimes been called Amcite lenses.

Ett av andamdlen med uppfinningen ãr all astadkomma linsmaterial, som kan anvandas for konstruktion av baklyktor pa sá salt att de reflexreflektera ljus, som: riktas pa dem aven i avsevard vinkel mot normalen, t. ex. dven i en vinkel av °miffing 45°. Detta dr uppenbarligen en forbattring av sdkerheten, eftersom det blir mojligt att uppnd reflex-. reflektion av ljus fran baklyktorna av automobiler, som aro parkerade i 0 vinkel mot en trottoarkant, ehuru det infallande ljuset rikr tas mot baklyktorna frail en automobil, som passerar raden air parkerade automobiler och darfdr nodvandigtvis riktar sitt strAlkastailjus mot de parkerade automobilernas baklyktor i en vinkel ,av omkring 45°. One of the objects of the invention is to provide all lens material which can be used for the construction of taillights on such a salt that they reflect light, which: is also directed at them at a considerable angle to the normal, e.g. dven at an angle of ° miffing 45 °. This obviously leads to an improvement in safety, as it becomes possible to achieve reflex. reflection of light from the taillights of automobiles parked at 0 angles to a curb, although the incident light is richly taken towards the taillights frail an automobile, which passes the line of air parked cars and darfdr necessarily directs its spotlight to the taillights of the parked automobiles at an angle , of about 45 °.

- De tetraedriska Ancite-linserna» kurnm joke astadkomma reflexreflektion air ljus, som riktas mot dem i en sadan stor infallsvinkel, Vid tillverkning av tetraedriska linser air ovannamnda slag (sklana linser tillverkas vanligen sâ, att de ligga I ett enda plan eller hava endast en svag valvning) mhste en avsevard kostnad nedlaggas i ett nodvandigt forberedningssteg, bestaende i framstallning av lajmpliga formar och dynor. Salunda är det ekonomiskt opraktiskt att forse automobiler med vitt skilda baklyktskonstruktionex under 2 utnyttjande av tetraederprineiperna, helt enkelt ph grund av att amorteringskostnaderna for en tetraedrisk dyna av en viss konstruk- om de fordelades pa endast ett fatal baklyktor i stallet for atskilliga hundratusen lyktor, skulle medfora alit for stor kostnadsbelastning pa koparen av en automobil. Konkurrensen om kunder har dock gjort det viktigt att kunna variera automobilkonstruktionerna, och olika baklyktskonstruktioner aro en. detalj av automobilernas utseende, vii-ken nadvandigtvis varit underkastad begransningar hittills. Foreliggande uppfinning gar det emellertid majligt att variera baklyktskonstruktionerna i hog grad, varvid vissa konstruktioner kunna utforas i ett enda exemplar utan att forsaljningspriset Ras i alltfor hag grad. I sjalva verket majliggiir uppfinningen. sä billig baklyktskonstruktion, att man kan framgtalla "Tersonliga» baklyktor utan alltfOr stor Okning eller utan flagon. Mining ails av forsaljningsprlset. Riga stora formkostnader behava amorteras eller fordelas utover ett start antal automobiler vid tillampning av f religgande uppfinning. The tetrahedral Ancite lenses »kurnm joke achieve reflex reflection air light, which is directed at them in such a large angle of incidence, In the manufacture of tetrahedral lenses air the above-mentioned types (slender lenses are usually manufactured so that they lie in a single plane or have only one weak vaulting) a considerable cost must be incurred in a necessary preparation step, consisting in the production of suitable molds and pads. Thus, it is economically impractical to provide automobiles with widely differing taillight designs using the tetrahedral principles, simply because the amortization cost of a tetrahedral pad of a particular design, if distributed to only one fatal taillight instead of several hundred thousand, entail alit too large cost burden on the buyer of an automobile. However, competition for customers has made it important to be able to vary the automobile designs, and different taillight designs are one. detail of the appearance of the automobiles, which has traditionally been subject to restrictions so far. In the present invention, however, it is possible to vary the taillight constructions to a high degree, whereby certain constructions can be made in a single copy without the selling price being too high. In fact, the invention may be illustrated. so cheap taillight construction, that one can produce "Personal" taillights without too much increase or without flake. Mining ails of the sales price. Riga large design costs beha amortized or distributed over a starting number of automobiles when applying the present invention.

Den stora anpassbarhet av konstruktionen, som mojliggores medelst arkmaterialet enligt -uppfinningen, tillater aven for forsta gangen ekonomisk framstallning av i rymden krokta former, som giva intryck av hastighet och rorelse, I. ex. »blasor» och iigontarar, utan minskning av funktionsegenskaperna, som i allmanhet nu arises vasentliga 1w sakerhetssynpunkt betraffande baklyktskonstruktioner. The great adaptability of the construction, which is made possible by means of the sheet material according to the invention, also allows for the first time economical production of curved shapes in space, which give the impression of speed and movement, I. e.g. «Blisters» and iigontarar, without reduction of the functional properties, which in general now arises essential 1w safety point of view concerning taillight constructions.

Framstallning av tetraederkonstruktioner medelst dyna gar det dessutom opraktiskt att framstalla stora artiklar med hansyn till kostnaderna, cla de vasentliga egenskaperna kunna uppnas med mindre artiklar, som framstains under anvandning av billigare, mindre dynor. Baklyktskon.struktionen vid begagnande av arkmaterialet enligt uppfinningen kraver joke dyrbara dynor, och det ar darfOr majligt att framstalla bade sma och stora baklyktor billigt. In addition, the production of tetrahedral structures by means of a cushion makes it impractical to produce large articles with a view to cost, and the essential properties can be achieved with smaller articles, which are produced using cheaper, smaller cushions. The taillight construction when using the sheet material according to the invention requires very expensive cushions, and it is therefore possible to produce both small and large taillights cheaply.

Dâ tetraeder begagnas i baklyktskonstruktioner, tranger ibland smuts sä sm'aningom in i baklyktan °eh avsatter sig som en hinna pa tetraederutsprangen, sa att deras reflektionsegenskaper forsamras sä kraftigt, att reflexreflektionen blir natt och jamnt markbar. Sadan nedsmutsning kan forhindras genom hermetiskt tillslutning av omradet bakom tetraedrarna i farhallande till den yttre atmosfaren, men. detta betyder en kostnadsokning. Vid tillampning av foreliggande uppfinning är hermetisk tillslutning onoclig, och kraftig reflexreflektion. erhMles, Oven sedan en viss nedsmutsning uppstatt. Teoretiskt formodas, att denna skillnad mellan tetraederkonstruk tionerna och uppfinningen till stor del beror pa att tetraedrarna aro optiska precisionsreflektorer, som lätt storas av nedsmutsning, medan konstruktioner enligt uppfinningen aro jamforelsevis mindre precisa i fraga om sina optiska egenskaper och darfar storas forhallandevis mindre av nedsmutsning. When tetrahedra are used in taillight constructions, dirt sometimes penetrates so slowly into the taillight that it settles as a film on the tetrahedron protrusions, so that their reflection properties are so severely impaired that the reflex reflection becomes night and evenly noticeable. Such contamination can be prevented by hermetically sealing the area behind the tetrahedra in contact with the outside atmosphere, however. this means a cost increase. In the practice of the present invention, hermetic closure is uncomplicated, and strong reflex reflection. erhMles, Oven since a certain contamination occurred. Theoretically, it is assumed that this difference between the tetrahedral structures and the invention is largely due to the fact that the tetrahedra are optical precision reflectors, which are easily disturbed by fouling, while structures according to the invention are comparatively less precise in terms of their optical properties.

Ehuru uppfinningen an sarskilt anvandbar yid tillverkning av baklyktor, kan den. alien tillampas for manga andra andamal. Exempelvis kunna konstruktioner enligt uppfinningen begagnas vid tillverkning av skyltar och mar-ken, som kunna belysas med inre och/eller yttre ljus. Although the invention is particularly useful in the manufacture of taillights, it can. alien is applied to many other purposes. For example, constructions according to the invention can be used in the manufacture of signs and ground, which can be illuminated with internal and / or external light.

Reklamskyltar kunna framstallas sa., att de aro snarlika invandigt belysta, mita skyltar men dessutom tjanstgara sasom kraftiga reflexrektorer for ljus under nattimmar, da inre belysning skulle vara onodigt dyrbar, oiler vid fel pa den inre belysningen. Skyltar av arkmaterialet enligt uppfinningen tjanstgora sasom standiga blickfang om flatten for personer i automobiler oberoende av de lokala belysningsforhallandena ()eh kunna aven sjalva vara invandigt belysta, da extra blickfangsformaga onskas. Advertising signs can be produced in such a way that they are similarly internally illuminated, my signs but also useful as powerful reflectors for light during night hours, when interior lighting would be unnecessarily expensive, oiler in case of failure of the interior lighting. Signs of the sheet material according to the invention serve as permanent eye-catchers around the surface for persons in automobiles, independent of the local lighting conditions (), and can even be internally illuminated themselves, as extra eye-catcher shapes are desired.

Sadana skyltar arc sarskilt vardefulla sasom vagmarken pa huvudvagar. Walla vagmarken aro vanligen sjalva belysta far att draga uppmarksamheten till sig, men vid fel pa belysningen ãr det viktigt, att market uppvisar nalbelysning for att undvika foraremisstag och insaktning till foljd av bristande vaginformation. Praktisk tillampning av foreliggande upppfinning giver en laming pa detta problem. Such signs are especially valuable as the road on main roads. Walla vagmarken are usually illuminated themselves to attract attention, but in the event of an error in the lighting, it is important that the market shows needle lighting to avoid driver mistakes and sluggishness due to lack of vaginal information. Practical application of the present invention provides a paralysis to this problem.

En ytterligare fordel, som Or sarskilt vardefull for automobiltillverkare, ãr det forhallandet, att arkmaterialet enligt uppfinningen kan framstallas med liten vikt per ytenhet och i sadant utforande, att det kan rullas till kompakta rullar for transport ()eh lagring. A further advantage, which is particularly valuable for automobile manufacturers, is the fact that the sheet material according to the invention can be produced with little weight per unit area and in such a design that it can be rolled into compact rollers for transport () and storage.

Arkmaterialet enligt uppfiningen Or av sa.- dan natur, att det bestar av ett flertal reflexreflekterande komplex (varje komplex har en liten, sfarisk lins i optisk forbindning med sma, under linsen liggande, speglande reflekterande organ), som aro f8rdelade i ett skikt och hMlas i lage av ett ljusgenomslappande, bojligt, formbart och icke fibrOst bindemedel. De sma, sfariska linserna hava sO. liten storlek, att flera hunda miljarder av dem erfordras for fyllning av ett karl med en rymd av c:a 30 1, men de sma linserna aro dock forsedda med var sin liten, speglande reflektor pa sin baksida for bildande av ett komplex, och komplexen aro bundna i orienterat lage ett ljusgenomslappande bindemedelsskikt for bildande av ett ark. The sheet material according to the invention Or is of such a nature that it consists of a plurality of reflex reflecting complexes (each complex has a small, spherical lens in optical connection with small, below the lens, reflecting reflecting means), which are distributed in a layer and hMlas in layer of a light-transmitting, flexible, malleable and non-fibrous binder. The small, spherical lenses have sO. small size, that several hundred billion of them are required for filling a man with a space of about 30 1, but the small lenses are each equipped with a small, reflecting reflector on its back for the formation of a complex, and the complex are bonded in an oriented layer to a light-transmitting adhesive layer to form a sheet.

Trots sina reflexreflekterande egenskaper är arket i sin helhet ljusgenomslappande.Uppnaendet av alla dessa egenskaper i ett enda arkmaterial fir verkligen overraskande, men det är sarskilt med hansyn till den ringa starleken av komplexen annu mera overraskande, att det kan uppnas pa ett praktiskt, enkelt och ekonomiskt sat, sâ att arkmaterialet kan forsaljas for ett skaligt pris. Despite its reflex reflective properties, the sheet as a whole is light transmissive. The acquisition of all these properties in a single sheet material is really surprising, but it is especially with regard to the small size of the complexes even more surprising that it can be achieved in a practical, simple and economically, so that the sheet material can be resold for a reasonable price.

Uppfinningen skall beskrivas narmare I det foljande under hanvisning till bifogade ritning. Fig. 1 visar en sektion genom ett ark enligt uppfinningen. Fig. 2 visar en sektion genom en baklyktslinskonstruktion. Fig. 3 visar en sektion langs linjen 3-3 i fig. 2. Fig. 4 visar schematiskt i sektion en skylt. Fig. 5 visar de optiska egenskaperna av arket enligt fig. 1. Fig. 6 visar ett diagram Over reflexreflektionsegenskaperna av i det foljande angivna exempel pa. arkmaterial. The invention will be described in more detail in the following with reference to the accompanying drawing. Fig. 1 shows a section through a sheet according to the invention. Fig. 2 shows a section through a taillight construction. Fig. 3 shows a section along the line 3-3 in Fig. 2. Fig. 4 schematically shows in section a sign. Fig. 5 shows the optical properties of the sheet according to Fig. 1. Fig. 6 shows a diagram of the reflex reflection properties of the example pa given in the following. sheet material.

I fig. 6 visas ett diagram, i vilket abskissan avser vinkeln mellan infallande ljus och normalen, medan ordinatan avser styrkan av det reflexreflekterade ljuset. Styrkan av reflexreflektionen ãr angiven i mcd/lux/cm2 (milli-candela per lux per cm2 arkmaterial). De i diagrammet givna vardena erhollos genom att uppmata reflexreflektionsstyrkan i en punkt, som i varje fall lag i vinkelhanseende 0,3° frail respektive infallande ljusknippe, som begagnades for provning av arkmaterialet, dvs. uppmatningspunkten lg t. ex. 20,3° frail arkmaterialets normal, da ljusknippet bildade 0 med sagda normal. Fig. 6 shows a diagram in which the abscissa refers to the angle between incident light and the normal, while the ordinate refers to the strength of the reflective light. The strength of the reflex reflection is stated in mcd / lux / cm2 (milli-candela per lux per cm2 sheet material). The values given in the diagram are obtained by measuring the refractive power at a point which, in each case, is angularly 0.3 ° frail and incident light beam, respectively, which was used for testing the sheet material, i.e. the feed point lg e.g. 20.3 ° frail the sheet material normal, when the light beam formed 0 with said normal.

I fig. 1 visas ett ark 10, som har ett flertal reflexreflekterande komplex. Varje komplex bestar av en sfarisk lins 11 i optisk forbindning med ett f8r linsen enskilt, underliggande, speglande reflekterande organ 12. Detta organ 12 visas sasom bestaende av en kencentrisk huv ph det undre partiet av sjalva linsen. Fig. 1 shows a sheet 10 which has a plurality of reflective reflecting complexes. Each complex consists of a spherical lens 11 in optical connection with an individual, underlying, reflecting reflecting member 12 for the lens. This member 12 is shown as consisting of a kencentric hood on the lower part of the lens itself.

De reflexreflekterande komplexen 11-12 aro sa orinerterade, att deras reflekterande huvar 12 aro va.nda mot erkets 10 baksida 13, medan deras sfariska linser aro vanda mot arkets framsida 14. The reflex reflecting complexes 11-12 are so oriented that their reflective hoods 12 are facing the back 13 of the sheet 10, while their spherical lenses are facing the front 14 of the sheet.

De sfariska linserna utskjuta frail ytan 14, sft att arket liar en. knottrig yta. The spherical lenses protrude from the surface 14 so that the sheet is exposed. lumpy surface.

Ett bojligt, formbart, icke fibrost bindemedel 15 halter de ref lekreflekterande komplexen 11-12 i orienterat lage i det summansatta arket 10. Bindemedlet stracker sig partierna av komplex 11-12 och Mita dern i ett enkelt skikt. Bindemedlet 15 Or genomskinligt och tillater ljus att ga genom arket mellan de speglande reflekterande organen av de ljusreflekterande komplexen. Uttrycket »genoniskinlip anvandes har for att beteckna icke blott diffus ljusgenomgang utan aven sadan ljusgeranngang, som tillater betraktande av bilder genom arket. Ett bin.deme del, som Or genomsynligt, skall salunda anses falla under begreppet »genomskinligb. bindemedel. A flexible, malleable, non-fibrous adhesive 15 holds the reflective complexes 11-12 in an oriented layer in the sum sheet 10. The adhesive extends the portions of complexes 11-12 and the center in a single layer. The adhesive is transparent and allows light to pass through the sheet between the reflective reflecting means of the light reflecting complexes. The term "genonislip" is used to denote not only diffuse light transmission but also such light transmission, which allows viewing of images through the sheet. A bin.deme part, which Or transparent, shall thus be considered to fall under the concept of »transparentb. binder.

Ehuru avsevart utrymme visas mellan de reflexreflekterande komplexen 11-12 ph ritningen for tydlighets skull, kunna komplexen I verkligheten Tara och aro ocksa i allmanhet hoppackade i ett enkelt skikt, sh att de berora varandra. Trots hoppackningen av komplexen har arket ljusgenomslappande omraden mellan komplexen, och en avsevard del av arkmaterialets totala yta Or fortfarande ljusgenomslappande, varvid ljuset gar genom arkmaterialet mellan (ibland genom) komplexens smh reflektionsorgan. Although considerable space is shown between the reflex-reflecting complexes 11-12 ph the drawing for the sake of clarity, the complexes In reality Tara and aro are also generally packed in a single layer, sh that they touch each other. Despite the compaction of the complexes, the sheet has light-transmitting areas between the complexes, and a considerable part of the total surface of the sheet material is still light-transmitting, the light passing through the sheet material between (sometimes through) the complexes and the reflecting means.

Den nMvandiga ljusgenomslappningen kan varieras i beroende av vad arkmaterialet skall anvandas till. Arkmaterialet genomslapper emellertid i praktiken htminstone omkring % av alit det mot m.aterialets baksida 13 kaStade lju.set. For skyltar och marken är det lampligast att begagna arkmaterial, som ge, nomslappa sh litet som 5 % eller nagot mera, dvs. upp till omkring 25 %, av alit det mot baksidan 13 riktade ljuset. For baldyktskonstruktioner Or ljusgenomslappningen lampligen nagot storre, och det Or lampligt att i kombination med kraftig reflexreflektion begagna ljusgenonisla.ppningsformaga av storleksordningen frOn omkring 20 % upp till sh mycket som 50 % av det riktade ljuset (fore,, tradesvis atminstone omkring 30 %). Storre ljusgenomslappningStiirmaga uppnas vanligen ph bekostnad air reflexreflektionsformagan, och detta Or icke att rekommendera. The usual light transmission can be varied depending on what the sheet material is to be used for. In practice, however, the sheet material transmits at least about% of all the light thrown towards the back of the material. For signs and the ground, it is most appropriate to use sheet material, which gives, nomslappa sh as little as 5% or something more, ie. up to about 25%, of the light directed towards the back 13. For submersible constructions, the light transmittance is suitably slightly larger, and it is appropriate, in combination with strong reflex reflection, to use light genius apertures of the order of about 20% up to as much as 50% of the directed light (preferably at least about 30%). Larger light transmissionStiirmaga is usually achieved at the expense of the air reflex reflection formagan, and this Or not to recommend.

Fig. 5 visa' schematiskt ljusgenomslappningsfOrmagan hos arkmaterialet. En avse7 yard. del av det baksidan 50 traffande ljuset (antytt medelst heldragna pilar) slappes genom arket. Det ljus, som traffar baksidan 50 snett, reflekteras ibland fran utsidorna av havarna 12 ph de sfariska. linserna 11 ph. O. salt, att detta ljus utkommer frfrn arkma, terialets framsida. Fig. 5 schematically shows the light transmittance of the sheet material. An avse7 yard. part of the back 50 striking light (indicated by solid arrows) is passed through the sheet. The light, which hits the back 50 obliquely, is sometimes reflected from the outside of the oceans 12 ph the spherical ones. lenses 11 ph. O. salt, that this light emanates from the arkma, the front of the material.

Fig. askadliggor Oven principen for reflexreflektion- vid arkmaterialet. En infallande ljusstrAle a traffar arkets yta i vinkel mot normalen och butes och reflekteras av arkr materialets reflexreflekterande komplex ph sa satt, att-ett kraftigt, koniskt ljusknippe b—b' aterliastas inktning mot ljuskallan,varvid det koniska ljusknippets axel i huvudsak sammanfaller med den infallande ljusstralens a axel. Det Or tyclligt, att icke alit det arkmaterialets yta traffande ljuset verkligen htervander i .riktaing mot kallan fOr det infallande ljuset, men en stor del av det infallande ljuset aterkastas pa detta satt, och man erhaller en kraftig reflexreflektion, sasom franagar av fig. 6. 4 Bortsett frail ytrefraktion och -reflektion aro de faktorer, som paverka mangden av arkmaterialet genomslappt ljus, i huvudsak 1) ogenomskinligheten av komplexens speglande reflekterande organ och den av dessa organ effektvt tackta totalytan, 2) tjockleken och ljusgenomslappligheten av bindeskiktet, inbegripande eventuellt stomskikt, och 3) koncentrationen av de reflexreflekterande komplexen per ytenhet av arkmaterialet. Fig. Ash layers Above the principle of reflective reflection in the sheet material. An incident ray of light strikes the surface of the sheet at an angle to the normal and is reflected and reflected by the reflective complex of the sheet material so that a strong, conical light beam b — b 'atheres the ink toward the light source, the axis of the conical light beam substantially coinciding with the incident axis of the light beam. It is probable that not all the light striking the surface of the sheet material really returns in the direction of the cold of the incident light, but a large part of the incident light is reflected in this way, and a strong reflex reflection is obtained, as is apparent from Fig. 6. 4 Apart from frail surface refraction and reflection, the factors which affect the amount of light transmitted through the sheet material are mainly 1) the opacity of the reflecting reflecting members of the complexes and the total surface effectively observed by these members, 2) the thickness and light transmittance of the bonding layer, including , and 3) the concentration of the reflective complexes per unit area of the sheet material.

Da. de reflekterande organens ogenomskinlighet minskas, okas arkmaterialets formaga att genomslappa ljus. En minskning av de reflekterande organens storlek medfor aven en Wining av arkmaterialets lj usgenomslappningsformaga, d ndra faktorer aro oforandrade. Den koncentriska, huvformiga reflektorn 12 bildar ett andsegment, som tacker den undre eller bakre anden air den sfariska linsen 11, och detta andsegment bor utgora atminstone omkring 25 % av hoj den eller diametern av den sfariska linsen 11 for bibehallande av den onskade snedvinkligheten av reflexreflektionen. Reflektorhuvar, som tacka sa mycket som 50 % av hoj den av de sfariska linserna (halvsfariska huvar), aro anvanclbara, men. i allmanhet gtva huvar eller reflektorandsegment, som stracka sig upp Mugs de sfariska linsernas sidor en stracka av omkring 30-40 % av linsernas diameter, den basta avpassningen av reflexreflektionsstyrka och snedvinklighet av reflexreflektionen. Yes. the opacity of the reflecting organs is reduced, the ability of the sheet material to transmit light is increased. A reduction in the size of the reflecting members also results in a wining of the light-transmitting shape of the sheet material, other factors being unchanged. The concentric, hood-shaped reflector 12 forms a duck segment which thanks the lower or rear duct air to the spherical lens 11, and this duck segment should constitute at least about 25% of the height or diameter of the spherical lens 11 to maintain the desired oblique angle of the reflex reflection . Reflector hoods, which account for as much as 50% of the height of the spherical lenses (hemispherical hoods), are usable, but. in general gtva hoods or reflector edge segments, which extend up Mugs the sides of the spherical lenses a distance of about 30-40% of the diameter of the lenses, the best fit of reflective reflection strength and oblique angle of the reflective reflection.

Genom att minska IA den av forbandet upp langs sidorna av de sfariska linserna och deras tillhorande reflektorer uppnas en aiming av arkmaterialets ljusgenomslappningsformaga, da tivriga faktorer hallas oforandrade. Om bindeskiktet gives okad tjocklek, uppstar en viss minskning air ljusgenomslappningsformagan, och bindeskiktets egen ljusgenomslapphghet pa.verkas air det eller de dari anvanda materialen, inbegripande den. mojitga narvaron av sadana material som fyllmedmel (t. ex. Ti02) eller fargmedel. By reducing the IA of the bandage up along the sides of the spherical lenses and their associated reflectors, an aiming of the light transmission shape of the sheet material is achieved, as various factors are kept unchanged. If the bonding layer is given an increased thickness, a certain decrease in the light transmittance occurs, and the bonding layer's own light transmittance is affected by the material or materials used therein, including it. mojitga narvaron of such materials as fillers (eg TiO2) or dyes.

- Vid sankning av koncentratiouen av de reflexreflekterande komplexen per ytenhet av arkmaterialet okas arkmaterialets ljusgenomslappningsformaga, da andra faktorer hallas oforandrade. - When lowering the concentration of the reflective complexes per unit area of the sheet material, the light transmittance of the sheet material is increased, as other factors are kept unchanged.

Olika, icke fibrosa material, vilka kunna begagnas sasom bindemedel, angivas i de efterfoljande exemplen. lampliga bindemedel aro genomskinliga for ljus och kunna t. o. m. vara genomsynliga. Da genomskinliga, organiska hartspolyiner begagnas sasom bindemedel, kan man latt uppna onskad bi5jlighet, shackbarhet, sammandragbarhet och formbarhet air arkmaterialet. Various non-fibrous materials which can be used as binders are given in the following examples. Lampable adhesives are transparent to light and may even be transparent. Since transparent organic resin polyins are used as binders, the desired flexibility, shackability, contractility and formability of the air sheet material can be easily achieved.

Sma glasparlor med en diameter air sá litet som nagra fa a upp till omkring 1su och ett brytningsindex (nD) av storleksordningen 1,9 hava visat sig lampliga att begagna sasom sfariska linser, dâ man onskar uppna sã kraftigt reflexreflektion som mojligt. Glasparlor eller ekvivalenta organ med storre brytningsindex an omkring 1,9 kunim emellertid begagnas, da reflexreflektion med mindre styrka ken tillatas. Da knottriga framsidor begagnas, sásom visas pa ritningen, bOr brytningsindexet for parlorna eller de sammansatta; sfhiska linserna (oberoende av om det ror sig ora parlor ensammma eller parlor, som overdragits med ett optiskt skikt, eller om parlor, som aro forsedda med en respektive parla fran dess reflekterande organ skiljande, genomskinlig huv) icke variera avsevart fran ett onarade av omkring 1,7 till 2,0, varvid omkring 1,9 är att foredraga, cla det galler att uppna kraftigaste reflexreflektion. Small glass beads with a diameter of air as small as a few up to about 1su and a refractive index (nD) of the order of 1.9 have proved suitable for use as spherical lenses, when one wishes to achieve as strong a reflection as possible. However, glass beads or equivalent means with a larger refractive index of about 1.9 kunim are used, as reflex reflection with less strength is allowed. When gnarled fronts are used, as shown in the drawing, the refractive index of the beads or the composites should be used; The spherical lenses (irrespective of whether they are solitary or parlor coated with an optical layer, or whether there are parlors provided with a respective transparent and transparent cap separating from its reflecting member) do not vary considerably from an onarade of about 1.7 to 2.0, with about 1.9 being preferred, it is important to achieve the strongest reflex reflection.

Det reflekterande organet eller den koncentriska huven, som är anbragt pa ett koncentriskt satt kring alminstone en del av den underliggande a.nden av de sfariska linserna, uppvisa en speglande reflekterande yta for ljus, som traffar organet frail den sfariska linsens insida, och huven bar lampligen Tara framstalld under begagnande av sadan me-tall som exempelvis silver eller aluminium. Det är mest praktiskt tatt anvanda kemisk utfallning for bildande av ett skikt av reflekterande overdrag pa de sfariska linserna, men andra metoder kunna begagnas, t. ex. angavsattning. The reflecting member or concentric hood, which is arranged in a concentric manner around at least a portion of the underlying end of the spherical lenses, has a reflective reflecting surface for light which strikes the member from the inside of the spherical lens, and the hood was aptly Tara made using such metals as silver or aluminum. It is most practical to use chemical precipitation to form a layer of reflective coatings on the spherical lenses, but other methods can be used, e.g. provision.

I del foljande skola givas nagra utforingsexempel, som icke fa anses begransa uppfinningen i nagot hanseende och i vilka alla delar aro viktdelar, savida icke annat angivits. In the following school some exemplary embodiments are given, which may not be considered to limit the invention in any respect and in which all parts are parts by weight, unless otherwise stated.

Exempel 1. Ett 0,025 cm tjockt ark av cellulosaacetatbutyrat overdrogs med ett 0,004 cm tjockt skikt air en losning, som bestod av 16,67 delar cellulosaacetatbutyrat med en viskositet av 0,5 sek (fallkuleprov) och 25 delar av ett arylsulfonamidformaldehydharts, losta i en blandning av lonsingsmedel, bestaende av 25 delar butyllaktat, 20 delar toluen, 10 delar metyletylketon, 3 delar etylalkohol och 0,33 delar butylalkohol. Cellulosaacetatbutyratet med angiven viskositet anskaffades Iran Eastman Chemical Products, Inc., Kingsport, Tennesse, och är ett harts med lag viskositet och ett smaltomrade av ungefar 140-170° C. Arylsulfonamidformaldehydhartset ,anskaf f ades fran Monsanto Chemical Company under handelsnamnet »Santolite MHN. Det är ett hart, praktiskt taget farglost, organiskt harts, som mjultnar vid omkring 62° C och är tamligen sprott vid normal runistemperatur. Example 1. A 0.025 cm thick sheet of cellulose acetate butyrate was coated with a 0.004 cm thick layer of a solution consisting of 16.67 parts of cellulose acetate butyrate having a viscosity of 0.5 sec (drop ball sample) and 25 parts of an arylsulfonamide formaldehyde resin, dissolved in a mixture of release agent, consisting of 25 parts of butyl lactate, 20 parts of toluene, 10 parts of methyl ethyl ketone, 3 parts of ethyl alcohol and 0.33 parts of butyl alcohol. The cellulose acetate butyrate of the indicated viscosity was obtained from Iran Eastman Chemical Products, Inc., Kingsport, Tennessee, and is a resin having a low viscosity and a melting range of about 140-170 ° C. The arylsulfonamide formaldehyde resin, obtained from Monsanto Chemical Company under the tradename Santolite MH. It is a hard, practically colorless, organic resin, which melts at about 62 ° C and is fairly brittle at normal runic temperature.

Det pafOrda overdraget torkades under 1 min vid 65° C for att avlagsna en avsevard del air losningsmedlet fran alla partier av over- draget men dock kvarldmna en tillracklig mangd losningsmedel for att overdragets yta skulle vara klibbig. Sma. glasparlor, som Rant overdragits fullstandigt koncentriskt med silver, fingo sedan fritt falla i stor mangd pa det klibbiga ytoverdraget pa cellulosaacetatbutyratstommen och pressades latt in i overdraget. Overskottsparlor avborstades, sâ att det kvarstod i huvudsak ett enkelt skikt air silverbeslagna parlor, som skoto ut fran den klibbiga ytan. The required coating was dried for 1 minute at 65 ° C to remove a considerable part of the air solvent from all parts of the coating, but still left a sufficient amount of solvent for the surface of the coating to be sticky. Sma. glass beads, which Rant was coated completely concentrically with silver, were then allowed to fall freely in large quantities on the sticky surface coating on the cellulose acetate butyrate body and pressed lightly into the coating. Excess beads were brushed off, leaving essentially a single layer of air-silver-coated beads protruding from the sticky surface.

Vid framstallning av de forsilvrade parlorna anbragtes omkring 300 delar sma glasparlor med ett brytningsindex av 1,9 och en medeldiameter av omkring 50-56 p i omkring 1200 delar vatten, som inneholl ungefar 12 delar silvernitrat och som befann sig i ett blandningskarl av rostfritt stal. Härtill sattes 25 delar av en 28 % losning av ammoniumhydroxid under omroring. Darpa: sattes till blandningen under omroring 14 delar dextros i 32 delar vatten och omedelbart daref ter en Riming av omkring 6 delar kaliumhydroxid i 32 delar vatten. Reaktionen tillats fortskrida upp till omkring 5 min for erhallande av en kemisk utfallning av silver pa parlytorna. Under denna reaktion omrordes parlorna i blandningen. Efter reaktionen avldgsnades vattnet och de dari losta bestandsdelarna fran de overdragna parlorna. Darefter tvattades de Overdragna parlorna med vatten och torkades vid omkring 150° C under varsam ornroring under omkring 5 min. In making the silver-plated beads, about 300 parts of small glass beads having a refractive index of 1.9 and a mean diameter of about 50-56 microns were placed in about 1200 parts of water containing about 12 parts of silver nitrate and contained in a stainless steel mixing vessel. To this was added 25 parts of a 28% solution of ammonium hydroxide with stirring. Darpa: 14 parts of dextrose were added to the mixture with stirring in 32 parts of water and immediately afterwards a defrosting of about 6 parts of potassium hydroxide in 32 parts of water. The reaction is allowed to proceed for up to about 5 minutes to obtain a chemical precipitate of silver on the bead surfaces. During this reaction, the beads were stirred into the mixture. After the reaction, the water and the loose constituents were removed from the coated beads. The coated beads were then washed with water and dried at about 150 ° C with gentle stirring for about 5 minutes.

Sedan anbragtes de forsilvrade parlorna pa den klibbiga ytan pa forut beskrivet satt, och det aterstftende losningsmedlet i det klibbiga ytoverdraget avlagsnades genom uppvarmning av konstruktionen under omkring 10 min. vid 120° G. Darpa utsattes arkets knottriga yta under omkring 10 sek for ett losningsbad, som bestod air 2,7 delar svavelsyra, 0,8 delar kaliumbikromat och 96,5 delar vatten. Denna badbehandling tjanade till att avlagsna silveroverdraget fran det icke i det torkade bindeskiktet inbaddade partiet av parlorna. Efter omkring 10 sek i badet skoljdes arkkonstruktionen med vatten och fordes darpa mellan tva gummivalsar for avlagsnande av huvuddelen av vattnet, innan arket utsattes for varmtuft for i huvudsak fullstandig torkning av arket. Then, the silver-plated beads were applied to the sticky surface in the manner previously described, and the remaining solvent in the sticky surface coating was removed by heating the structure for about 10 minutes. at 120 ° G. Darpa was subjected to a lumpy surface of the sheet for about 10 seconds to a release bath, which consisted of 2.7 parts of sulfuric acid, 0.8 parts of potassium bichromate and 96.5 parts of water. This bath treatment served to remove the silver coating from the portion of the beads not embedded in the dried binder layer. After about 10 seconds in the bath, the sheet structure was rinsed with water and forced to drip between two rubber rollers to remove most of the water, before the sheet was subjected to hot tuft for substantially complete drying of the sheet.

Del erhallna arket tillat ungefar 30 % air det arkets baksida traffande ljuset att gA. genom arket och uttranga fra'n arkets framsida. Reflektorhuven och hartsforhandet strd.ckte sig vid denna arkkonstruktion upp kings parlornas sidor en stracka, som var lika med ungefar 40 % av diametern eller hojden. av parlorna (dvs. parlorna voro inbaddade upp till omkring 40 % av sin diameter i hartset). Part of the obtained sheet allowed about 30% of the light on the back of the sheet to go. through the sheet and protrude from the front of the sheet. In this sheet construction, the reflector hood and the resin forehead extended up the sides of the king beads a distance equal to about 40% of the diameter or height. of the beads (ie the beads were embedded up to about 40% of their diameter in the resin).

Arket gay kraf lig reflexreflektion av ljus, som traffade arket med infallsvinkeln 0° eller i olika vinklar mot normalen, sasom framgar av fig. 6. Detta ark ar sarskilt anv5.ndbart for baklyktor, parkeringslyktor och sakerhetslyktor, vid vilka erfordras saval forhallandevis stor ljusgenomslappning som reflexreflektion. The sheet is a strong reflex reflection of light which struck the sheet at an angle of incidence of 0 ° or at different angles to the normal, as shown in Fig. 6. This sheet is particularly useful for taillights, parking lamps and safety lamps, which require a relatively large light transmission. as reflex reflection.

Da man onskar Ora den reflekterande huyen pa de sfariska linserna lj usgenomslappande under bibehallande air reflexreflektionsegenskapen, kan den ovan angivna tiden for kemisk avsattning av silver pa glasparlorna forkortas f5r att minska silverfallningens ogenomskinlighet Exempel 2. Ett ark air cellulosaacetatbutyrat, som hade en tjocklek av ungefar 0,05 cm, anbragtes pa. ett bond och upphettades till omkring 140° C. DA filmen eller arket av cellulosaacetatbutyrat natt ungefar 10 G, biirjade det mjukna och var vid 10 G mycket mjukt. I enlighet med exempel 1 behandlade, forsilvrade parlor upphettades till 150° G och pressades sedan upp till omkring 25 % air sin hojd eller diameter in i filmen eller arket av cellulosaacetatbutyrat med tilllhjalp av en hard gummivals. Overskottsparlor avborstades, och filmen tillAts svalna till rumstemperatur. Fran de friliggande partierna av de forsilvrade par-bra bortetsades silvret enlighet med exempel 1, och awn torkningen av arkkonstruktionen skedde i enlighet med exempel 1. When it is desired to reduce the reflective envelope of the spherical lenses by light while maintaining the air-reflecting property, the above-mentioned time for chemical deposition of silver on the glass beads may be shortened to reduce the opacity of the silver precipitate. Example 2 A sheet of cellulose acetate butyrate 0.05 cm, placed on. a bond and heated to about 140 ° C. The DA film or sheet of cellulose acetate butyrate overnight was about 10 G, softened and at 10 G very soft. In accordance with Example 1, silver-plated beads treated were heated to 150 ° C and then pressed up to about 25% of their height or diameter into the cellulose acetate butyrate film or sheet using a hard rubber roller. Excess beads were brushed off, and the film was allowed to cool to room temperature. From the exposed portions of the silver-plated pairs, the silver was etched away according to Example 1, and the drying of the sheet structure took place according to Example 1.

Arket genomslappte omkring 20 % av det mot baksidan kastade ljuset och var kraftigt reflexreflekterande, sasom framgar air fig. 6. The sheet transmitted about 20% of the light thrown towards the back and was highly reflective, as shown in Fig. 6.

Exempel 3. Polyetylenoverdraget papper upphettades till omkring 100° C, vid vilken temperatur polyetylenen blev mjuk och svagt ldibbig. Glasparlor med ett brytnings-index av omkring 1,9 och en diameter av omkring 50-56 p utspriddes i ett skikt pa det mjuka och svagt klibbiga poletylenAverdraget. Efter inpressning av parlorna i overdraget till omkring 40 % av deras diameter eller hojd Averdrogs den parlforsedda sidan av arket med ett tunt, ogenomskinligt skikt av aluminium, som pafordes genom avsattning av aluminiumanga pa konstruktionen. Example 3. Polyethylene coated paper was heated to about 100 ° C, at which temperature the polyethylene became soft and slightly sticky. Glass beads with a refractive index of about 1.9 and a diameter of about 50-56 p were spread in a layer on the soft and slightly sticky polyethylene coating. After pressing the beads into the coating to about 40% of their diameter or height, the beaded side of the sheet was coated with a thin, opaque layer of aluminum, which was applied by depositing aluminum vapor on the structure.

Ett 0,025 cm tjockt ark av cellulosaacetatbutyrat, som forut overdragits med genomskinligt, tryckhaftande klister fOr att bilda ett klisterskikt med en tjocklek air omkring 0,007 cm, laminerades med klistersidan neatvand ph arkets aluminiumbelagda yta. Det anvanda, tryckhaftande klistrets natur Ar icke kritisk, men sasom exempel kan man begagna ett genomsldnligt, tryckhaftande klister, som bestar i huvudsak av polymeriserat metylisoamylaltrylat (akrylsyraester ay 2-metyl-pentano1-4). Derma polymer dr i sig sjalv tryckhaftande och kan anbringas pA butyratstom- 6 men frail en losning i heptan, vilken losning liar en koncentration av omkring 22 % och en viskositet av omkring 2500 cP. Heptan ar ett mycket daligt losningsmedel for butyratstommen och kan avlagsnas snabbt fran det paforda overdraget vid en forhojd temperatur, dvs. vid omkring 50-60° C. A 0.025 cm thick sheet of cellulose acetate butyrate, previously coated with transparent, pressure-sensitive adhesive to form an adhesive layer having an air thickness of about 0.007 cm, was laminated with the adhesive side of the water-coated surface of the sheet water. The nature of the pressure-sensitive adhesive used is not critical, but as an example, a transparent, pressure-sensitive adhesive can be used, which consists mainly of polymerized methyl isoamyl acrylate (acrylic acid ester ay 2-methyl-pentano-1-4). This polymer is self-adhesive and can be applied to the butyrate body 6 from a solution in heptane, which solution has a concentration of about 22% and a viscosity of about 2500 cP. Heptane is a very poor release agent for the butyrate backbone and can be rapidly removed from the required coating at an elevated temperature, i.e. at about 50-60 ° C.

Vid laminering av den tryekhaftande klisterytan av cellulosaacetatbutyratet Over aluminiumOvezdraget pa det parlforsedda polyetylenarkmaterialet pressades de med aluminium tackta parlorna in i det tryckhaftande klisterskiktet en stracka, som motsvarade omkring 25 % av parldiametern. Darpa, avlagsnades det polyetylenoverdragna papperet varsamt fran laminatet. Harvid haftade i huvudsak alit aluminium Indian parlorna fast vid det polyetylenoverdragna papperet och avlagsnades tillsammans med detta. En. huv av aluminium, som var koncentriskt avsatt runt det &re, friliggande partiet av parlorna, vilket parti utskot fran det polyetylenbehandlade papperets polyetylenyta, var emellertid oberord av isartagningen av laminatet och forblev pa det erhallna arkmaterialet (dvs. kvarstannade sasom en koncentrisk huv kring parlornas undre an-de, som var forankrad i klisteroverdraget pa cellulosaacetatbutrarket) for att bilda det nodvandiga, speglande reflekterande organet under de sfariska linserna i den slutliga arkartikeln.. Reflektorhuven och bindeskiktet (det tryckhaftande klistret) tackte bh.da det bakre partiet av parlorna Over oinkring 25 % av hojden eller diametern av parlorna i den slutliga konstruktionen. Denna arkartikel genomslappte omkring 30 % av det infallande ljuset men var andd kraftigt reflexreflekterande, sasom framgar av fig. 6. When laminating the pressure-sensitive adhesive surface of the cellulose acetate butyrate Over the aluminum coating on the beaded polyethylene sheet material, the aluminum-cured beads were pressed into the pressure-sensitive adhesive layer a distance corresponding to about 25% of the bead diameter. Darpa, the polyethylene coated paper was carefully removed from the laminate. At that time, mainly alit aluminum Indian adhered the beads to the polyethylene coated paper and was removed together with it. One. However, the aluminum cap concentrically deposited around the exposed portion of the beads, which portion protrudes from the polyethylene-treated paper surface of the polyethylene paper, was unaffected by the disassembly of the laminate and remained on the resulting sheet material (i.e., remained as a concentric cap around the beads). ande, which was anchored in the adhesive coating on the cellulose acetate butrarket) to form the necessary, reflective reflecting means under the spherical lenses in the final sheet article .. The reflector hood and the bonding layer (the pressure-sensitive adhesive) thanked both the rear part of the beads 25% of the height or diameter of the beads in the final design. This sheet article transmitted about 30% of the incident light but was highly reflective, as shown in Fig. 6.

Exempel 4. Detta exempel askadliggor ett fargat arkmaterial, som verkar vara forsilvrat eller vitt under dagsljusforhallanden och under reflexreflekterande belysningsforhallanden under natten men som vid invandig belysning (belysning frail baksidan) synes yarn. rott. Detta arkmaterial kan anvandas, da tee-ken pa en skylt eller ett marke lampligen skola andra utseende vid olika tidpunkter under varierande belysningsforhallanden om natten. Example 4. This example ashes a colored sheet material which appears to be silvery or white during daylight conditions and during reflective lighting conditions during the night but which in interior lighting (lighting frail the back) appears yarn. rott. This sheet material can be used, as the sign on a sign or a mark will suitably have a different appearance at different times during varying lighting conditions at night.

Ett 0,15 cm tjockt ark av polymetylmetakrylat Overdrogs fried ett 0,004 cm tjockt skikt under begagnande av en losning ,av 12,50 delar metylmetakrylat, 18,75 delar arylsulfonamidformaldehydharts enligt exempel 1 och omkring 4,0 delar av ett genomskinligt, fat fargamnesmaterial, lost i omkring 46 delar toluen och 18,75 delar butyllaktat. Ett alizarinfargamne kan begagnas sasom rat, genomskinligt fargamne. Kypfargamnen avensom. -pigment kunna begagna.s, onks0. onskas.Lampliga fargamnesingredienser are exenapelvis ftalocyaningront,ftalocyaninblattoch Watchung Red. A 0.15 cm thick sheet of polymethyl methacrylate Overdrogs fried a 0.004 cm thick layer using a solution, of 12.50 parts of methyl methacrylate, 18.75 parts of arylsulfonamide formaldehyde resin of Example 1 and about 4.0 parts of a transparent, barrel dye material. lost in about 46 parts of toluene and 18.75 parts of butyl lactate. An alizarin dye can be used as a transparent dye. Kypfargamnen avensom. -pigment can be used.s, onks0. Desirable.Lampy dye ingredients are, for example, phthalocyanine green, phthalocyanine leaves and Watchung Red.

Den bildade konstruktionen torkades under omkring 1 min vid 65° C for att avlagsna en avsevard del av losningsmedlen men kvarlamria nagot losningsmedel for att Ora overdragets yta klibbig. Forsilvrade parlor anbragtes pa detta klibbiga overdrag i enlighet med exempel 1 och etsades for avlagsnande av silver, sasom beskrivits i exempel 1. The resulting structure was dried for about 1 minute at 65 ° C to deposit a significant portion of the solvents but left some solvent to make the surface of the coating sticky. Silver-plated beads were applied to this tacky coating in accordance with Example 1 and etched to deposit silver, as described in Example 1.

Det salunda bildade arket genomslappte sa.- som rod farg omkring 5 % av det infallande ljuset och uppvisade silverfargad reflexreflektion, sasom antydes i fig. 6. Reflektorhuvarna och hartsfOrbandet i detta ark tackle det bakre partiet av parlorna Over ungefar 20 % av parlornas hojd eller diameter. The sheet thus formed transmitted as red color about 5% of the incident light and exhibited silver-colored reflective reflection, as indicated in Fig. 6. The reflector caps and the resin joint in this sheet tackle the rear portion of the beads. Over about 20% of the bead height or diameter.

Exempel 5. En konstruktion framstalldes enligt exempel 1 med undantag for att gulfar- gade, genomskinliga parlor begagnades. I alla andra hanseenden voro materialen och forhallandena vid framstallningen av konstruktionen identiska med de i exempel 1 beskrivna. Example 5. A construction was prepared according to Example 1 except that yellow, transparent beads were used. In all other male aspects, the materials and conditions in the preparation of the structure were identical to those described in Example 1.

Detta arkmaterial syntes gravitt, dâ del belystes frail sin undersida, och tilltalande gult, da det betraktades nara kallan for reflexre- flekterat ljus, som riktats mot arkmaterialets framsida. Arkmaterialet genomslappte om- kring 35 % av det infallande ljuset och upp- visade reflexreflektionsegenskaper i enlighet med fig. 6. Omkring 30 % av hoj den av parlor- na i detta ark voro inbaddade i hartsbindemedlet, och ytpartiet av parlornas inbaddade del var tackt med en koncentrisk silverhuv. This sheet material appeared gravity, with part illuminated from its underside, and appealingly yellow, when it was considered near the call for reflective light, which was directed towards the front of the sheet material. The sheet material transmitted about 35% of the incident light and exhibited reflective properties in accordance with Fig. 6. About 30% of the height of the beads in this sheet were embedded in the resin binder, and the surface portion of the beads embedded was thanks to a concentric silver hood.

Arkmaterialen enligt alla exemplen kunna lätt formas till tredimensionellt krokta former genom begagnande av endast ringa -dime och formningstryek. Arkmaterialet enligt exempel 1 upphettades exempelvis till omkring 120- 150° C och formades till en blasa genom att manuellt pressa och stracka arket med den parlforsedda sidan utatvand Over en form. The sheet materials according to all the examples can be easily formed into three-dimensionally curved shapes by using only slight dime and forming pressure. For example, the sheet material of Example 1 was heated to about 120-150 ° C and formed into a bubble by manually pressing and stretching the sheet with the beaded side out of a mold.

Darefter tffluits det formade arkmaterialet sval- na till rumstemperatur, vid vilken arkmaterialet bibeholl sin form aven efter avlagsnande fran formningsverktyget. Ett skyddsover- drag av »Lucite», vilket hade en liknande blasform men var nagot storre, framstalldes aven. Sasom framgar av fig. 2 och 3, insattes den ljusgenomslappande, reflexreflekterande Masan 30 i »Lucite»-blasan 31 for att bilda ett sammansatt aggregat, som var redo att begagnas sasom linsaggregat for en baklykta. Thereafter, the formed sheet material is cooled to room temperature, at which the sheet material retains its shape even after removal from the forming tool. A protective coating of «Lucite», which had a similar bubble shape but was somewhat larger, was also produced. As shown in Figures 2 and 3, the light-transmitting, reflective-reflecting Masan 30 was inserted into the "Lucite" bubble 31 to form a composite assembly which was ready to be used as a lens assembly for a taillight.

I fig. 4 askadliggoras de viktigaste elementen av en skyltkonstruktion under begagnande av arkmaterialet. Arkmaterialet 40 är har an.- ordnat med sin baksida 41 framf Or en ljuskalla 42 for inre belysning i ett holje 43. Fram- sidan 41 av arket är tackt med en genonskinlig skiva 45. Ski-van 45 kan uppbara tecken. 7 Dessutom eller alternativt kan arket 40 innehalla ett teckenmOnster av fargade glasparlor och/eller carpi bindemedel, sa att det blir mojligt att visa olika information under olika belysningsforhallanden. In Fig. 4, the most important elements of a sign construction are ash-damaged while using the sheet material. The sheet material 40 is arranged with its back 41 in front or a light source 42 for internal lighting in a housing 43. The front 41 of the sheet is thanked with a translucent disc 45. The ski van 45 can bear signs. In addition or alternatively, the sheet 40 may contain a drawing pattern of colored glass beads and / or carpi binder, so that it becomes possible to display different information under different lighting conditions.

Ark kunna 5.ven framstallas med ett genomskinligt, fargat tecken i eller pa bindemedlet (t. ex. genom tryckning pa baksidan eller genom tryckning fore infOring av de reflexreflekterande komplexen i bindemedlet), och reflexreflekterande komplex kunna sedan anbringas i ett ,annat teckenmonster. Inre belysning med lag intensitet kan begagnas for att visa den information, som formedlas av det genomskinliga, fargade tecknet i eller pa. bindemedlet, och yttre belysning frail automobilstralkastare eller liknande kan begagnas for att till personer i automobilen formedla den information, som bares av monstret av reflexreflekterande komplex. Sheets can also be produced with a transparent, colored mark in or on the adhesive (eg by printing on the back or by printing to introduce the reflective complexes into the adhesive), and reflective reflecting complexes can then be applied in another character pattern. Low-intensity interior lighting can be used to display the information conveyed by the transparent, colored sign in or on. the adhesive, and external lighting frail car headlights or the like can be used to convey to persons in the car the information carried by the monster of reflective reflective complexes.

Claims

Patent-oriented orientation in a light-transmitting binder layer and each of which consists of a small, spherical lens in optical connection with a single, underlying, reflecting reflector, the complexes aro sa. oriented, that they give reflex reflection of light hitting the front of the sheet, characterized in that the sheet has light-transmitting surfaces between the complexes and that the bonding layer consists of flexible, non-fibrous, heat-moldable material. Sheet according to claim 1, characterized in that the reflecting reflector is a concentric hood. Request publications: Patent papers iron Sweden 145 489, 160 160; Denmark 53 990. Agents:

1. Reflective reflective sheets with a plurality of reflective reflecting complexes, which are held in the joint. T F Nilsson, Malmo Stockholm 1966. Kunl. Boktr. P. A. Norstedt & Saner. 960006 1