Ink supply tube

A technology for ink supply tubes and intermediate layers, applied in the direction of hoses, tubes, tubes/pipe joints/fittings, etc., which can solve problems such as poor ejection, adverse effects on printing quality, and nozzle clogging of print heads

CN107614271AActive Publication Date: 2018-01-19HAKKO CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-01-19

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Abstract

This ink supply tube comprises an inner layer that makes contact with ink, an intermediate layer comprising at least three layers, and an outer layer, and is characterized in that: the intermediate layer includes a first intermediate layer, a second intermediate layer and a third intermediate layer; the inner layer comprises any of an ethylene-tetrafluoroethylene copolymer resin, a tetrafluoroethylene-perfluoroalkoxy alkane copolymer resin, or a modified perfluoroalkoxy resin, which have solvent resistance, oxygen barrier properties and low moisture permeability; the first intermediate layer comprises a polyamide resin, which is fusible with the inner layer or the second intermediate layer; the second intermediate layer comprises an ethylene-vinyl alcohol copolymer resin, which has oxygenbarrier properties; the third intermediate layer is fusible with the second intermediate layer or the outer layer and comprises an adhesive polyolefin resin, which has low moisture permeability; and the outer layer comprises a thermoplastic resin or elastomer. Due to this configuration, the present invention provides an ink supply tube for ink jet printers, which has excellent solvent resistance and flexibility, and which is superior in terms of oxygen barrier properties and low moisture permeability.
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Description

technical field

[0001] This invention relates to ink supply tubes for ink jet printers. Background technique

[0002] Generally, in printing using an inkjet printer, dedicated ink sealed in an ink cartridge in advance is supplied to a print head via an ink supply tube, ejected onto a medium such as paper, and printed.

[0003] The ink supply tube used here is an indispensable and important component for stably supplying ink from the ink tank to the print head.

[0004] On the other hand, with regard to the ink supply tube, the characteristics required for the ink supply tube are gradually diversified along with the diversification of ink types due to the improvement in the functions of inkjet printers in recent years.

[0005] The characteristics required for the ink supply tubes for such inkjet printers can be listed as follows:

[0006] 1. Solvent resistance: maintain the durability of ink contact parts to various solvent components used in ink;

[0007] 2. Oxygen barri...

Examples

Embodiment 1

[0057] Will figure 1 Each layer in the film was made into the following component composition, and the ink supply tube of Example 1 was manufactured.

[0058] Inner layer 1: Fluorine resin (manufactured by Asahi Glass Co., Ltd.; ethylene-tetrafluoroethylene copolymer resin (ETFE-based resin); layer thickness: 50 μm)

[0059] First intermediate layer 2-1: polyamide resin (manufactured by Ube Industries, Ltd. (Ube Industries, Ltd.); polyamide 12; layer thickness: 30 μm)

[0060] Second intermediate layer 2-2: Ethylene-vinyl alcohol copolymer resin (EVOH resin) (manufactured by Kuraray Co., Ltd. (Kurare Co., Ltd.); ethylene-vinyl alcohol copolymer resin; layer thickness: 30 μm)

[0061] Third intermediate layer 2-3: adhesive polyolefin resin (manufactured by Mitsubishi Chemical Corporation; acid-modified polyethylene; layer thickness: 30 μm)

[0062] Outer layer 3: Ethylene-based polymer (manufactured by Mitsui DuPont Chemical Co., Ltd.; Ethylene-based polymer; layer thickness:...

Embodiment 2

[0065] The ink supply tube of Example 2 was produced in the same manner as in Example 1, except that the outer layer 3 had the following composition.

[0066] Outer layer 3: polyolefin-based elastomer (manufactured by Prime Polymer Co., Ltd.; linear low-density polyethylene (L-LDPE); layer thickness: 260 μm).

Embodiment 3

[0068] The ink supply tube of Example 3 was produced in the same manner as in Example 2, except that the second intermediate layer 2-2 had the following component composition. In addition, polyester resin was compounded as a modifier in consideration of stress-crack resistance.

[0069] Second intermediate layer 2-2: ethylene-vinyl alcohol copolymer resin (EVOH resin) / polyester resin=80 / 20 (layer thickness: 30 μm)

[0070] EVOH resin: (manufactured by Kuraray Co., Ltd. (Kurare Co., Ltd.); ethylene-vinyl alcohol copolymer resin)

[0071] Polyester resin: (manufactured by Mitsubishi Chemical Corporation; polyester-based thermoplastic elastomer)