Raw paper of pressure-sensitive adhesive paper, manufacturing method thereof and pressure-sensitive adhesive composite paint used in manufacturing method

A pressure-sensitive adhesive and paper bonding technology, applied in paper coating, fiber raw material processing, papermaking, etc., to achieve high definition and good OCR adaptability.

Active Publication Date: 2010-06-09
HOKUETSU PAPER MILLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] On the other hand, once bonded, although it will not be peeled off by the usual external force assumed by the automatic sorting machine at the time of postal delivery, if it is pulled by a force exceeding such a normal external force plus a strong force that can be applied by a person Open, it will make the folded and bonded two sheets of paper peel off at the interface between the opposite coating layers, so that the printed variable information is exposed

Method used

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  • Raw paper of pressure-sensitive adhesive paper, manufacturing method thereof and pressure-sensitive adhesive composite paint used in manufacturing method
  • Raw paper of pressure-sensitive adhesive paper, manufacturing method thereof and pressure-sensitive adhesive composite paint used in manufacturing method
  • Raw paper of pressure-sensitive adhesive paper, manufacturing method thereof and pressure-sensitive adhesive composite paint used in manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0134] [Production of base paper for bi-fold (one side coated) pressure-sensitive adhesive paper]

[0135] As the non-peeling pressure-sensitive adhesive, select 100 parts by weight of natural rubber latex obtained by graft polymerization of natural rubber and methyl methacrylate; 48 parts by weight of amorphous silica in an amount of 130ml / 100g; as the second particulate filler, select 32 parts by weight of amorphous silica with a volume average particle diameter of 12 μm and an oil absorption of 200ml / 100g, and add them to water to fully disperse them. After adding and mixing 20 parts by weight of polyamide epichlorohydrin as a cationic ink fixer to the dispersion, 12.5 parts by weight of fully saponified polyvinyl alcohol as a binder was added and mixed, and an antifoaming agent was added and mixed. , thereby obtaining a coating material as a pressure-sensitive adhesive composition. The prepared coating was applied by the air knife method of the coater so that the coating ...

Embodiment 2

[0137] [Production of base paper for tri-fold (double-sided coated) pressure-sensitive adhesive paper]

[0138] As the non-peeling pressure-sensitive adhesive, select 100 parts by weight of natural rubber latex obtained by graft polymerization of natural rubber and methyl methacrylate; 48 parts by weight of amorphous silica in an amount of 130ml / 100g; as the second particulate filler, select 32 parts by weight of amorphous silica with a volume average particle diameter of 12 μm and an oil absorption of 200ml / 100g, and add them to water to fully disperse them. After adding and mixing 20 parts by weight of cationic polyurethane resin as a cationic ink fixer in this dispersion, adding and mixing 12.5 parts by weight of fully saponified polyvinyl alcohol as a binder, adding and mixing a defoamer, In this way, a coating material as an adhesive composition was obtained. The prepared coating was applied by the air knife method of the coater so that the coating amount was 6.0 g / m in ...

Embodiment 3

[0170] [Production of base paper for tri-fold (double-sided coated) pressure-sensitive adhesive paper]

[0171] As a non-peeling pressure-sensitive adhesive, select 100 parts by weight of natural rubber latex obtained by graft polymerization of natural rubber and methyl methacrylate; as the first particle filler, select a volume average particle diameter of 1.2 μm, an oil absorption 48 parts by weight of amorphous silica at 130ml / 100g; as the second particle filler, select 32 parts by weight of amorphous silica with a volume average particle diameter of 12 μm and an oil absorption of 200ml / 100g, and add them to water to fully disperse them. In this dispersion, as a cationic ink fixer, 20 parts by weight of polydiethylamine epichlorohydrin as a polyalkylamine epichlorohydrin polymer was added and mixed, and then a fully saponified polyoxyethylene as a binder was added and mixed. 12.5 parts by weight of vinyl alcohol was added and mixed with an antifoaming agent to obtain a coat...

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Abstract

The invention relates to raw paper of pressure-sensitive adhesive paper, which has no pollution to an offset press and the like for form printing due to the peeling of a coating layer, and has no transfer printing of ink to an opposite face during the use of the manufactured pressure-sensitive adhesive paper. The raw paper of the pressure-sensitive adhesive paper suitable for being printed by an ink-jet printer is characterized by comprising base paper and the coating layer for totally or partially forming a pressure-sensitive adhesive composition on one face or two faces of the base paper; the coating layer contains a base agent, a particle filling agent, a cationic ink fixing agent and adhesive, wherein the particle filling agent accounts for 75 to 95 percent of the weight of the base agent; the particle filling agent consists of a first particle filling agent of amorphous silica of which volume average particle diameter is 1 to 3 mum and a second particle filling agent of amorphous silica of which volume average particle diameter is 8 to 15 mum measured according to a Kurt particle size instrument method, and the first particle filling agent accounts for 50 to 70 percent of the weight of the complete particle filling agent; and the oil absorptions of the first and second particle filling agents are both 100 to 210 milliliters per 100 grams measured according to ISO 787-5 respectively.

Description

technical field [0001] The present invention relates to base papers suitable for pressure-sensitive adhesive papers printed by inkjet printers (for example, pressure-sensitive adhesive papers for postcards, pressure-sensitive adhesive papers for various notices requiring confidentiality, etc.), Its production method, and the pressure-sensitive adhesive composition coating material used for the production method thereof. Background technique [0002] Conventionally, sealed letters have been used by banks, government agencies, insurance companies, credit companies, etc. to notify individual recipients of personal information (eg, deposit amount, usage fee, etc.) by email. In Japan, postcards are cheaper than mailing sealed letters. Therefore, in Japan, various pressure-sensitive adhesive papers for postcards have been developed that can keep communication confidential like sealed letters, are intimate and concealable, and can present the same appearance as postcards, and are ...

Claims

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Application Information

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IPC IPC(8): D21H19/10D21H21/14
Inventor 野田义树大久保善博
Owner HOKUETSU PAPER MILLS
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