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A coating and equipment technology, which is applied in the field of coating liquid storage tubes and coating equipment, can solve the problems of no special restrictions on materials, etc., achieve sufficient three-dimensional effect, excellent writing performance, and prevent the effect of force reduction

Inactive Publication Date: 2015-11-18
SAKURA COLOR PRODUCTS CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The inventions described in Patent Documents 5 to 7 are inventions in which, in a writing instrument such as a ballpoint pen, the ink composition stored in the ink composition storage part and the follower located at the rear end thereof are controlled by a pressurizing mechanism or by The ink composition is pressurized toward the tip of the ink composition storage part by gas expansion caused by the heat of the finger, but the material of the follower is not particularly limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0252] (ink composition)

[0253] The ink compositions used in the examples were produced in the following manner. The following "parts" are all "weight parts".

[0254] Mix and stir the following materials to make water-based ink composition: propylene glycol: 15.0 parts, NeocolYSK: 0.5 parts, KF-6011: 0.2 parts, Erujineo#325Silver: 0.8 parts, MowinylLDM7520: 10.0 parts, PrimalAC-3001: 60.0 parts, water : 6.2 units, ASE-6025P: 6.0 units, ProxelXL-2: 0.2 units, COURT_SIDEPH2: 0.2 units, P-30A color base (colorbase) #3: 0.9 units.

[0255] The pH of the obtained ink composition was 8.3.

[0256] According to JISK2283, using a viscometer ("TVE22HT"), the viscosity at 20 degreeC was 8.12 Pa*s under the condition of 1.34 cone (cone) 0.5 rpm.

[0257] (Example and Comparative Example)

[0258] Writing utensils were manufactured by filling the above-mentioned ink composition in the ink accommodating portion of a coating liquid storage tube serving as an ink accommodating portion...

Embodiment 2

[0263] (ink composition)

[0264] The ink compositions used in the examples were produced as follows.

[0265] Resin emulsion A: 70 parts by weight, viscosity modifier: 3.0 parts by weight, wetting agent: 5.0 parts by weight, surfactant: 0.5 parts by weight, preservative: 0.5 parts by weight, and ion-exchanged water added to 100 parts by weight. The dissolution apparatus was stirred for 1 hour to obtain the desired ink composition.

[0266] Similarly, the ink compositions of Examples 2 to 27 and Comparative Examples 1 to 8 were produced so as to have the compositions described in Table 1 below, and these were filled in spring-loaded ballpoint pens.

[0267] Then, these results are shown below.

[0268] (evaluate)

[0269]

[0270] Measured under the conditions of a TVE-25L viscometer (manufactured by Toki Sangyo Co., Ltd.), 3° R14 cone, and 0.5 rpm.

[0271]

[0272] ◎…Sufficient uplift is felt when the handwriting is touched with a finger

[0273] ○...Feel a bump whe...

Embodiment 3

[0351] An applicator based on the ballpoint pen 8 of the above-mentioned embodiment is formed. In addition, in this applicator, the radial length of the interval L3 formed on one end portion side of the spring 13 in the radial direction was 0.15 mm. Furthermore, writing is continued while the applicator is used and the initial posture in which no ink is used is changed to a state in which no ink is stored in the ink tank forming portion.

[0352] Then, the change in the biasing force of the spring during this period was measured. As a result, it is possible to obtain Figure 14 The results shown.

[0353] The pressing force of 0.6N in the initial posture where ink is not used at all becomes 0.4N in the state where no ink is stored in the ink tank forming part, showing that the pressing force changes inversely proportional to the expansion of the spring. That is, it is shown that the pressurizing force does not decrease suddenly due to the resistance received from the inner ...

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Abstract

[Problem] Fluctuations or irregular increases / decreases in the discharged amount of a coating liquid may occur due to large variations in the discharged amount of coating liquid in the coating liquid container tube, or to failure of the curing oil to be uniformly pushed out in the course of using the applicator. [Solution] Provided are a coating liquid container tube and an applicator, the coating liquid container tube being furnished at the distal end with an applicator part, and filled in the interior thereof with a coating liquid for supply to the applicator part; being furnished also with a curing oil to the back of the coating liquid which fills the coating liquid container tube interior; and being further furnished to the back thereof with a pushing means for pushing the curing oil through the agency of a pushing member. The surface of the pushing means on the side facing the curing oil is formed as a convex surface.

Description

technical field [0001] The present invention relates to a coating liquid storage cartridge used for applicators such as ballpoint pens, and an applicator using the coating liquid storage cartridge. Background technique [0002] In Patent Document 1, a resin emulsion-containing ink composition for a ballpoint pen capable of obtaining three-dimensional handwriting is described, which is an aqueous ink composition with a viscosity in the range of 500 to 10000 mP·a. An aqueous ink composition having a viscosity of 1,000 to 40,000 cp is described. [0003] In Patent Document 3, a gas pressurized writing instrument is described, which includes: a tubular body, a nib is provided at the front end, an ink composition supplied to the nib and a follower are accommodated inside, and the rear end is closed, Constructed of a material exhibiting low or impermeable gas permeability; and a pressurized gas sealed within the tubular body. [0004] In Patent Document 4, a pressurized ballpoin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A45D34/04B43K5/06B43K7/03B43K7/08B43K8/03B43K15/00B43L19/00C09D11/16
Inventor 安永雅博栗原德正中谷泰范有马裕西村英则
Owner SAKURA COLOR PRODUCTS CORPORATION
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