Fluorescent adhesive tape for use as a highlighter

Abstract: A fluorescent adhesive tape for use as a highlighter to apply to a support with writing, consisting of a transparent or semi-­ transparent film to which there are applied a layer of fluorescent coloured ink of high dry-substance content, and a layer of adhesive of low adhesive power which allows removal from said support without alteration of the support itself or of the writing. Said adhesive tape can be applied to exercise books, magazines, books etc., for school, the office and the home, and finds use in many other sectors.

Description: This invention relates to a fluorescent adhesive tape suitable for use as a highlighter for application to exercise books, magazines, books etc., in school, the office and the home, and for use in many other sectors. The practice of highlighting determined words or phrases in the context of a larger sentence is very useful, and its use is therefore becoming increasingly widespread in the various sectors. For example, in school the student finds it most useful to highlight in a textbook or exercise book those few lines which summarise or indicate the entire argument of an entire page; in various work activities it is very useful to highlight particular phrases of circulars. operating procedures, expiry dates etc. Examples of this kind are very numerous in daily practice. Highlighting is currently effected by means of highlighter pens which are completely satisfactory in highlighting those phrases of interest, but have the great drawback of marking the page permanently and indelibly. For this reason they are suitable for use only on low-value exercise books, books, magazines etc., whereas they can never be used on magazines, books or works of value or those which must be preserved in perfect condition. This drawback therefore limits the use of the highlighter in numerous cases in which highlighting would be very useful. This drawback is obviated by the use of the fluorescent adhesive tape of the present invention which, when applied over the writing of interest, gives excellent highlighting, whereas when highlighting is no longer required it can be removed without damaging the substrate and relative writing, so restoring the book, exercise book, magazine etc. to its original state. The fluorescent adhesive tape for use as a highlighter to apply to a support with writing according to the present invention is characterised in that it consists of: a - a transparent or semi-transparent support film having a thickness between 15 and 65 microns; b - a layer of 3-4 g/m 2 of a dry, fluorescent, writable ink obtained by applying an ink having the following chemical composition: fluorescent pigment 33-37% b.w., acrylic resin 9-12% b.w., synthetic wax 0.3-1% b.w., phthalic acid esters 4-5% b.w., ethylacetate 38-43% b.w., ethanol 9-11% b.w. and evaporating the solvent; c - a layer of 12-15 g/m 2 of an adhesive of low adhesive power which allows removal from said support without altering the support, itself or the writing, having the following chemical composition: natural rubber 65-75% b.w., hydrocarbon resins 25-35% b.w., polyisobutylene 0-10% b.w., polybutenes 0-10% b.w. Said film consists of polymeric material such as polyvinyl chloride, polypropylene, cellulose acetate or polyester. In one embodiment, said ink layer is applied to one face of said film and said adhesive layer is applied in the other face. As an alternative, if a semi-transparent support is used on which it is possible to write, the ink can be applied as an intermediate layer between the support and adhesive. This ink in addition to its transparency and fluorescence characteristics has a high resistance to the adhesive with which it comes into contact on being made up into reels. It is also possible to write on this ink with both pencil and pen. As an alternative, an ink having a lower dry-substance content, for example 30% by weight, could be used and applied by coating or by rotogravure printing. The fluorescent adhesive tape according to the present invention can be produced in various colours depending on the ink pigment, for example it can be of yellow, orange, green, lilac or other colour, to give the product and its use a particular aesthetic significance which allows personal creativity. It is made up into reels in a manner analogous to normal adhesive tape. Its possible applications are widespread in school, in the office, in the home and in many other sectors. Some of its more widespread applications are: to highlight writing, protect writing, decorate particular pages, and personalise books, magazines or notebooks. Other applications have an accident-prevention object, such as in colouring bicycle spokes, or in highlighting windows or other objects with which it is dangerous to collide.

Claims: A fluorescent tape for use as a highlighter to apply to a support with writing, characterised in that it consists of: a - a transparent or semi-transparent support film having a thickness between 15 and 65 microns; b - a layer of 3-4 g/m 2 of a dry, fluorescent, writable ink obtained by applying an ink having the following chemical composition: fluorescent pigment 33-37% b.w., acrylic resin 9-12% b.w., synthetic wax 0.3-1% b.w., phthalic acid esters 4-5% b.w., ethylacetate 38-43% b.w., ethanol 9-11% b.w. and evaporating the solvent; c - a layer of 12-15 g/m 2 of an adhesive of low adhesive power which allows removal from said support without altering the support, itself or the writing, having the following chemical composition: natural rubber 65-75% b.w., hydrocarbon resins 25-35% b.w., polyisobutylene 0-10% b.w., polybutenes 0-10% b.w. A tape as claimed in claim 1, characterised in that said film consists of polymeric material such as polyvinyl chloride, polypropylene, cellulose acetate or polyester. A tape as claimed in claim 1, characterised in that said ink layer is applied to one face of said film and said adhesive layer is applied in the other face. A tape as claimed in claim 1, characterised in that said ink is applied as an intermediate layer between said film and said adhesive. A tape as claimed in claim 1, characterised in that said ink is coloured yellow, orange, green or lilac.

Inventors: SALA GUIDO, ZUCCHIATTI IVANO, SALA, GUIDO, ZUCCHIATTI, IVANO
Applicants: INCAS HOLDING SPA, SICAD SPA
Application year: 1987
Main classification: C09J7
IPC codes: C09J7, C09D11