JPH06219094A - Pressure-sensitive transferred erratum correction tape - Google Patents

Abstract

PURPOSE:To obtain a pressure-sensitive transferred erratum correction tape, of which the white covering layer and transfer tacky layer components are difficult to oxidize and which is excellernt in light resistance and long-term stability because of little interlaminar movement of the tacky layer components and also excellent in tacky feeling and tack power. CONSTITUTION:A high molecular resin and tacky producer are used as components for white covering layer composed of resins as white pigment, additive and binder and for transfer tacky layer to an adherend; and a hydrogenated terpene resin is mixed with the binder resin and tacky producer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a water-based ballpoint pen, an oil-based ballpoint pen, a marking pen, a writing line with a fountain pen, etc.
Character or PPC copy, heat transfer character in word processor, white concealing layer to correct typographical errors such as printing by a typewriter, and pressure sensitive transfer typographical error on which a transfer adhesive layer to an adherend such as paper is further provided Regarding correction tape.

[0002]

2. Description of the Related Art This type of typographical error correcting material is called collection paper, and is mainly composed of white pigments such as titanium dioxide, magnesium carbonate, calcium carbonate, silica, etc., wax additives, and polymeric resins as binders for white pigments. For example, a white ink composition obtained by dissolving or dispersing polyisobutylene, ethylene-vinyl acetate copolymer, polyvinyl methyl ether in a volatile solvent is applied to one side of a flexible supporting substrate such as plastic film or paper. Apply
A uniform ink layer after drying (Japanese Patent Publication No. 53-167)
29) (Japanese Examined Patent Publication No. 60-43314), or one provided with a writing-imparting layer comprising a thermoplastic resin and silica fine particles, and a flexible base material of a plastic film in which inorganic fine particles are kneaded (JP-A-4-216885). )It has been known.

[0003]

In the conventional pressure-sensitive transfer typographical error correcting material, the wound correction tape which has become the mainstream in recent years is used.
As a white hiding layer, it has poor adhesion to a supporting substrate, peeling property during transfer correction, and poor adhesion / tack strength.In some cases, the white hiding layer peels off only partially so that typographical errors can be completely hidden. There is a defect that it cannot be transferred to an adherend such as paper at all when it is not present or in extreme cases. The plastic film base material with inorganic fine particles kneaded cannot be used in a large proportion of the inorganic fine particles as a concealing material, so the concealing effect is inferior. Rewriting with a water-based writing instrument such as a marking pen or fountain pen has the drawbacks that the ink will repel and that the writing lines and letters will dry slowly.

[0004]

According to the present invention, as a result of various investigations for solving the above-mentioned drawbacks, titanium dioxide, magnesium carbonate, calcium carbonate for correcting and concealing typographical errors,
A polymer resin and a hydrogenated terpene resin as a binder of a concealing layer, which is composed of an additive that enhances the peelability between a white pigment such as silica and a supporting substrate, are added and blended, and white is applied to an adherend such as paper. By applying an adhesive layer that uses a polymer resin and hydrogenated terpene resin as a tackifier to the adhesive layer component that transfers the concealment layer, the concealment effect is obtained when the pressure-sensitive transfer typographical correction tape of the winding is applied. The inventors have completed the present invention by finding that they are excellent in aging resistance and light resistance, and have an effect of obtaining long-term stability and a comfortable tacky feeling.

[0005]

That is, the present invention provides white pigments such as titanium dioxide, magnesium carbonate, calcium carbonate, and silica, which are suitable for correcting and concealing typographical errors, and additives for waxes for enhancing the releasability from a supporting substrate. And blending a polymer resin and a hydrogenated terpene resin as a binder of a white pigment,
A white hiding composition dissolved or dispersed in a volatile solvent is applied onto a flexible supporting base material such as a plastic film or paper and dried to provide a white hiding layer, and further, a white hiding layer is provided on the paper. A pressure-sensitive transfer typographical correction tape provided with an adhesive layer containing a polymer resin and a hydrogenated terpene resin as a tackifier as an adhesive layer component that more reliably transfers the white hiding layer to an adherend. is there. The hydrogenated terpene resin used in the present invention is one in which the unsaturated double bond, which is most easily oxidized, is eliminated from the terpene resin, so that it is less likely to be oxidized by air and the aging resistance and light resistance are improved.

[0006] In general, a tackifier can be used by adding and blending a tackifier, whereby the magnitude of resistance to viscous flow can be adjusted and a fine tackiness can be obtained. If no tackifier is added and blended, the tackiness becomes dull, and there is no temperature sensitivity and the tackiness layer becomes sticky due to a slight temperature rise, and the tackiness is lost at low temperatures.

By making the resin used in combination with the polymer resin as the binder and the resin used as the tackifier of the transfer adhesive layer the same, the inter-layer transfer of components between the white hiding layer and the adhesive layer is reduced, Even if it is left for a long period of time, the adhesive strength does not decrease, and the stable adhesive strength can be maintained. By blending a hydrogenated terpene resin as a binder component of the white hiding layer and a tackifier of the transfer pressure-sensitive adhesive layer component, the white hiding layer / transfer pressure-sensitive layer is stable and hardly oxidized even when left in the air for a long period of time. Not only does it give good results, but it also gives a comfortable sticky feeling through the temperature of the four seasons. The hydrogenated terpene resin is commercially available under the trade name of CLEARON (Yasuhara Yushi Kogyo Co., Ltd.), and this can be used.

As for the blending ratio of the hydrogenated terpene resin, the resin used for the white hiding layer, for example, styrene-butadiene, styrene-butadiene-styrene,
Styrene-isoprene-styrene, neoprene, polyisobutylene, polyacrylic acid ester, polyvinyl acetate, ethylene vinyl acetate copolymer can be used 60 to 140 parts by weight per 100 parts by weight, but preferably 80 to 120 It was part by weight. Regarding the blending ratio of the hydrogenated terpene resin in the transfer adhesive layer, it is necessary to have a tack force for adhering to an adherend such as paper with a very light force in a short period of time, and to maintain stable adhesive force for a long period of time. Therefore, 80 to 80 parts by weight of the polymer resin is included.
120 parts by weight was optimal. If it is less than 80 parts by weight, the temperature sensitivity becomes poor and the stickiness at low temperature becomes poor.
If the amount is 0 parts by weight or more, wound tape defects such as bay-shaped deformation and indentation tend to occur, which is unfavorable.

The white pigment used in the present invention is titanium dioxide, magnesium carbonate, calcium carbonate, silica, etc., which have been conventionally used, for improving the peelability between the flexible supporting substrate and the white hiding layer at the time of transfer correction. Microcrystalline wax, multi-wax, potassium oleate, potassium laurate and the like can be used as the additive of the above. Further, as the dispersant, a nonionic, anionic or cationic surfactant, and if necessary, an antioxidant and a stabilizer can be used.

[0010]

EXAMPLES The present invention will be described in more detail with reference to examples. Example-1 Styrene-butadiene resin 10 parts by weight Hydrogenated terpene resin Clearon P-85 (Yasuhara Yushi) 8〃 Titanium dioxide R-820 (Ishihara Sangyo) 52〃 Magnesium carbonate 3〃 Microcrystalline wax 2〃 POE sorbitan monosteare -TO NIKKOL TS-10 (Nikko Chemicals) 1 〃 Benzene 100 〃 Toluene 200 〃 The above composition is blended and sufficiently dispersed / mixed with a disperser such as a ball mill, attritor or sand grinder to conceal white. A composition is prepared, which is coated on a flexible supporting substrate such as a plastic film or paper with a coater and dried. Next, a pressure-sensitive transfer typographical error correction tape of the following adhesive layer composition is applied, dried and cut into a width of 5 mm or 6 mm and wound.
I thought Styrene-butadiene resin 20 parts by weight Hydrogenated terpene resin Clearon P-85 (Yasuhara Yushi) 16 〃 Benzene 50 〃 Toluene 100 〃 Example-2 Polyisobutylene 12 parts by weight Hydrogenated terpene resin Clearon P-85 (Yasuhara Yushi) 10 〃 Titanium dioxide R-820 (Ishihara Sangyo) 48 〃 Magnesium carbonate 5 〃 Microcrystalline wax 2 〃 POE sorbitan monostearate NIKKOL TS-10 (Nikko Chemicals) 1 〃 Toluene 200 〃 Same as Example-1 The pressure-sensitive transfer typographical error correction tape is prepared by using the following composition. Polyisobutylene 24 parts by weight Hydrogenated terpene resin Clearon P-85 (Yasuhara oil and fat) 20 〃 Toluene 150 〃 Example-3 Styrene-butylene-styrene resin 10 parts by weight Hydrogenated terpene resin Clearon P-105 (Yasuhara oil and fat) 〃 〃 Dioxide Titanium R-820 (Ishihara Sangyo) 51 〃 Silica 5 〃 Microcrystalline wax 2 〃 POE Nonylphenyl ether NIKKOL NP-10 (Nikko Chemicals) 1 〃 Toluene 250 〃 The same composition as Example 1 The pressure-sensitive transfer typographical correction tape is used, but the transfer adhesive layer has the following composition. Styrene-butylene-styrene resin 20 parts by weight Hydrogenated terpene resin Clearon P-105 (Yasuhara Yushi) 〃 〃 Toluene 100 〃 Next, in Examples 1 to 3 as Comparative Examples, the composition of the white hiding layer and the composition of the transfer adhesive layer The same thing as the same example was made without adding and blending the hydrogenated terpene resin of the product, and used as the pressure-sensitive transfer error correction tape of Comparative Examples 1 to 3. (Comparative Example-4) The composition of the white hiding layer and the composition of the transfer adhesive layer of Example-3 were replaced with Clearon P-105 which is a hydrogenated terpene resin, and a non-hydrogenated terpene resin YS Resin-A was used. (Yasuhara fats and oils) was added and blended in the same amount to prepare a pressure-sensitive transfer error correction tape in the same manner as in Example-3. Tables show the results of the test comparison of the tackiness, light resistance and stability of each Example and Comparative Example. -Test method-Adhesion: Room temperature is 15 ° C, 25 ° C, 35 ° C, and humidity is 65 each.
The transfer correction operation was performed in a room adjusted to%, and the transfer feeling of the tape and the transfer degree of the white hiding layer were observed. ◎: At each room temperature, the white hiding layer was completely transferred to the adherend with good adhesiveness. ◯: The tackiness was poor at a part of room temperature, but the white hiding layer was completely transferred to the adherend. Δ: The tackiness was poor at a part of room temperature, and the transfer of the white hiding layer was partially incomplete. X: The tackiness was poor at each room temperature, and the transfer of the white hiding layer was poor. Light resistance: The modified surface transferred to a paper adherend was exposed to sunlight together with a blue scale, and compared with the standard fading of the blue scale. ⊚: No change in the white concealing layer even with 6th grade fading. ◯: The white hiding layer is discolored due to Grade 5 fading. X: The white hiding layer is discolored due to the fourth grade fading. Stability: Transfer correction tape is stored at 40 ° C and 60% in a constant temperature and humidity room for 12 months, then taken out and kept at room temperature for 5 months.
After standing for a while, the degree of transfer of the white hiding layer was checked. A: The white hiding layer is completely transferred. ◯: The white hiding layer is almost completely transferred. X: Incomplete transfer of the white hiding layer.

[0011]

The white hiding layer and transfer adhesive layer of the present invention are
The pressure-sensitive transfer typographical error correction tape containing a hydrogenated terpene resin is compared with the one containing a terpene resin without hydrogenation as a tackifier, and the one not adding a tackifier. The transfer pressure-sensitive adhesive layer component was not easily oxidized, and the migration of the pressure-sensitive adhesive layer component between layers was small, so that it was excellent in light resistance and long-term stability, and also in good tackiness and tackiness.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location C09J 7/02 JLE 6904-4J

Claims (1)

[Claims] 1. A white concealing composition obtained by dissolving or dispersing a white pigment, an additive, and a resin as a binder as a main component in a volatile solvent on one surface of a supporting base material of a plastic film or paper. In the pressure-sensitive transfer error correction tape, which comprises a coated and dried white hiding layer, and further a transfer adhesive layer comprising a polymer resin and a tackifier on an adherend, a resin as a binder of the white hiding layer. And a pressure-sensitive transfer typographical error correction tape, characterized in that a hydrogenated terpene resin is blended with the tackifier of the transfer adhesive layer.