JP2010042600A - Inkjet cloth medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inkjet cloth medium, in which an image printed thereon by an ink-jet printer can be clearly viewed with high density not only from the print surface side but also from the reverse side. <P>SOLUTION: In the inkjet cloth medium including an ink receptor provided on at least one surface of a plain-woven fabric made from polyester multi-filament yarn, clearances formed by the warp and weft of the plain-woven fabric are filled up by extending the weft in the width direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an ink jet cloth medium, and more particularly to an ink jet cloth medium in which an image printed by an ink jet printer can be clearly seen at a high density not only on the print surface but also on the opposite surface. It is.

  2. Description of the Related Art In recent years, inkjet cross media based on fabrics typified by textiles have been commercialized as inkjet media. Advantages of using a fabric as a substrate include higher strength and durability and a unique texture compared to conventional media such as paper and film. On the other hand, however, the printed image has a lower density and inferior sharpness than paper and film.

  Among the inkjet cloth media, those developed for the purpose of wrinkles, goodwill, etc., can be visually recognized from the opposite side of the printed side of the image printed from one side of the fabric. Desired.

  For example, in Patent Document 1, an inkjet recording sheet having an ink receiving layer on one side of a support, the support is a woven fabric, and the opacity measured according to JIS P8138 of the inkjet recording sheet is 60. % Or less, an ink jet recording sheet is disclosed, and an image printed from one side can be seen from the opposite side of the printing surface, and the support is a woven fabric. It is said that it can be used effectively.

  However, in the case of this inkjet recording sheet, although the visibility from the opposite side of the printing surface is improved to some extent, conversely, the image density on the printing surface becomes insufficient, especially when viewing the image outdoors, As a whole, it was felt that the density was insufficient and the film was thin, and the impact was lacking.

JP 2001-088436 A

  The present invention has been made in view of the above problems, and provides an inkjet cross media in which an image printed by an inkjet printer can be clearly seen at a high density not only on the printed surface but also on the opposite surface. For the purpose.

  With respect to the above problems, the object of the present invention can be achieved by the following configuration.

  The inkjet cross media of the present invention is an inkjet cross media in which an ink receiver is provided on at least one surface of a plain woven fabric made of polyester multifilament yarns. The gap formed by is filled.

Also, the a basis weight of 40 and 80 g / ^{m 2} of plain weave, and the total denier of the yarn of the polyester multifilament is 50～120Dtex, it is preferred that the filament count is 20～100F.

  According to the present invention, it is possible to obtain an ink-jet cross medium in which an image printed by an ink-jet printer can be clearly seen at a high density not only on the print surface but also on the opposite surface.

  The inkjet cross media of the present invention is an inkjet cross media in which an ink receiver is provided on at least one surface of a plain woven fabric made of polyester multifilament yarns. The gap formed by is filled.

  A plain fabric made of woven polyester multifilament yarn usually has a surface as shown in FIG. That is, it is composed of three warps, wefts, and a gap formed by warps and wefts. After weaving, inkjet cross media is manufactured through processes such as scouring, relaxing, pre-setting, ink receptor addition, final setting, etc., but the surface of the plain fabric is not much different from that during weaving. .

  In the present invention, by appropriately setting the conditions of each process after weaving, the polyester multifilament yarn of the weft is appropriately dispersed, and the gap formed between the warp and the weft as shown in FIG. It is something to be filled.

  With such a surface, the ink can be received at any part of the printed surface, and the polyester multifilament yarn of the weft yarns can be dispersed moderately so that the polyester multifilament yarn can follow any part. As a result, a path for ink to pass from the print surface to the opposite surface is secured. Furthermore, the looseness of the polyester multifilament yarn of the weft means that the cross-section of the weft is changed from a substantially circular shape to a substantially elliptical shape, and the thickness of the plain woven fabric is thinned slightly. . This is also one of the reasons why ink easily penetrates the back surface. Further, since the thickness is reduced, light is easily transmitted, and the image on the printed surface is easily visible from the non-printed surface. Therefore, a clear image with a high density can be visually recognized even on the opposite surface of the print surface.

  Here, as an example of setting the process conditions to moderately disperse the weft polyester multifilament yarn, in the scouring and relaxing process, the plain woven fabric is processed while applying tension to the warp in the expanded state. is there. As for other condition settings, various conditions such as temperature during drying and heat setting, wind pressure, tension, and the like are appropriately set. These conditions are appropriately set depending on the design conditions of the plain woven fabric and the type of processing apparatus to be used, and cannot be quantified in general. Further, not only the process conditions but also the design conditions of the plain woven fabric are important factors. For example, the polyester multifilament yarn is preferably sweet-twisted or untwisted rather than strongly twisted.

Speaking of other design conditions of the preferred plain woven fabric in order to achieve the object of the present invention, the basis weight of the plain woven fabric is preferably 40 to 80 g / m ² , and the polyester multifilament yarn has a total denier of 50 to 120 dtex. It is preferable that the filament count is 20 to 100 f.

  The ink receiver provided on at least one surface of the inkjet cross media of the present invention, when applying a colorant to a fabric by an inkjet method, receives ink ejected from the nozzle instantaneously and holds it appropriately. Prevent ink bleeding.

  The treatment liquid for imparting the ink receptor to the fabric includes inorganic pigments such as synthetic fine silica, polyethylenimine resin, polyamide resin, polyamine resin, low molecular weight polyfunctional amine and amino group such as epihalohydrin. Reaction products with compounds, acrylic amine copolymer resins (quaternary ammonium salt polymers), polyamide epichlorohydrin resins, or resins having an ink fixing ability such as modified products of these resins, polyurethane resins, acrylic resins, Binders such as ethylene / vinyl acetate copolymer resin, polyethylene resin, polypropylene resin, carboxylated styrene / butadiene copolymer resin and polyester resin are appropriately contained.

  In addition, pastes, water-soluble organic solvents, dispersants, crosslinking agents, antistatic agents, penetrants, UV absorbers, anti-reducing agents, antioxidants, film-forming agents, softening agents, wetting agents, antifoaming agents, Leveling agents, viscosity modifiers, pH adjusters, surface tension modifiers, flameproofing agents, preservatives, and the like can be used, but are not limited thereto.

  Examples of the method for applying the ink receiver treatment liquid include a dip nip method, a rotary screen method, a knife coater method, a kiss roll coater method, and a gravure roll coater method. Of these, the dip nip method is preferable in that the ink receptor can be applied not only to the surface of the fabric but also to the interior and back surface of the fabric.

  After the treatment liquid is applied, the fabric is dried. The drying is not particularly limited as long as the moisture does not remain. Although it depends on the material and thickness of the fabric and the amount of treatment liquid applied, it can be generally performed at 90 to 180 ° C. for 60 to 300 seconds. Thus, the ink jet cloth media of the present invention can be obtained.

  Ink jet cross media can be obtained by applying ink by an ink jet method and then drying to obtain an optimal printed material for applications such as straw and goodwill.

  As an inkjet method, a charge modulation method, a micro dot method, a charge ejection control method, a continuous method such as an ink mist method, a piezo method, a bubble jet (registered trademark) method, an on-demand method such as an electrostatic suction method, etc. It can be adopted.

  Examples of the ink to be used include dye-based or pigment-based water-based inks, and are not particularly limited. However, when the ink is expected to be used outdoors, an inorganic or organic pigment having light resistance may be used. The ink may contain water, a water-soluble organic solvent, a pH adjuster, a preservative, a surfactant, a water-soluble resin, and the like in addition to a coloring material such as a dye and a pigment.

  EXAMPLES Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited thereto.

Preparation of treatment agent 5 parts by weight of a cationic polymer (Pulset JK-230, manufactured by Meisei Chemical Co., Ltd.), 15 parts by weight of a binder (Hydran CP-7020, manufactured by DIC Corporation), and 80 parts by weight of pure water Were mixed to prepare a treatment agent.

Example 1
A plain woven fabric with a basis weight of 60 g / m ² was woven using a polyester multifilament yarn of 90 dtex and 50 f for both the warp and the weft. The plain woven fabric is scoured while applying a tension of 100 N / m ^{2 to} the warp, and then the above-mentioned treatment agent is applied by the dip nip method, followed by heat treatment at 150 ° C. for 3 minutes. Got cross media.

  Moreover, it image | photographed with the electron microscope about the surface of the plain fabric before providing a processing agent. The photograph is shown in FIG.

Comparative Example 1
A plain woven fabric with a basis weight of 60 g / m ² was woven using a polyester multifilament yarn of 90 dtex and 50 f for both the warp and the weft. After scouring the plain woven fabric under normal conditions (particularly without applying excessive tension), the above-mentioned treatment agent is applied by the dip nip method, and then heat treated at 150 ° C. for 3 minutes. Got.

  Moreover, it image | photographed with the electron microscope about the surface of the plain fabric before providing a processing agent. The photograph is shown in FIG.

  The inkjet cloth media obtained in Example 1 and Comparative Example 1 were evaluated by the following evaluation methods.

◎ Density of printed surface and non-printed surface An inkjet printer (manufactured by EPSON, PX-9500S) was used, and pigment type aqueous ink (yellow, magenta, cyan, black) was added to the inkjet cloth media obtained in Examples and Comparative Examples. Each color) was printed in solid to form a recorded image. The recording portion was measured with a Macbeth color densitometer for each color density on the printed surface (front surface) and the non-printed surface (back surface). Among the obtained color density data, the color density of black is representatively shown in Table 1.

-Sharpness of printed surface and non-printed surface After performing the same printing as the above color density test, the sharpness of the printed surface and non-printed surface was evaluated according to the following criteria.
○ No bleeding at all △ Some bleeding is observed × Bleeding is clearly recognized

◎ Image visibility from non-printed surface After the same printing as the above color density test, the image was visually observed from the non-printed surface and evaluated according to the following criteria.
○ The image can be seen at a density that is almost the same as the printed surface. △ The density is slightly lower than the printed surface. × The density is significantly lower than the printed surface.

  From Table 1, since the image density and image sharpness of the printed surface are ensured in Example 1, and the colorant is well supplied to the non-printed surface, the image density and image clearness of the non-printed surface are good. The characteristics are also greatly improved. Therefore, the image clarity on the non-printed surface is also good.

It is the schematic diagram showing the surface of the normal plain fabric. It is the schematic diagram showing the surface of the plain fabric of this invention. 2 is an electron micrograph of the surface of a plain fabric of Example 1. FIG. 4 is an electron micrograph of the surface of a plain woven fabric of Comparative Example 1.

Explanation of symbols

1 Warp 2 Weft 3 Gap formed by warp and weft

Claims (2)

In an inkjet cross media in which an ink receiver is provided on at least one surface of a plain woven fabric made of polyester multifilament yarn, a gap formed by the warp and the weft is filled by spreading the weft of the plain woven fabric in the width direction. Inkjet cross media characterized by The basis weight of the plain weave is 40 and 80 g / ^{m 2,} and the total denier of the yarn of the polyester multifilament is 50～120Dtex, inkjet according to claim 1, wherein the filament count is characterized in that it is a 20~100f Cross media.