CN214646544U - Ink bag - Google Patents

Abstract

The utility model provides an ink bag that multilayer film that is prepared by coextrusion mode constitutes, this multilayer film ink bag contains according to the preface by inlayer to skin, and a resistant butt fusion layer, a choke layer and one prevent the puncture layer, should change resistant butt fusion layer and contain an at least polypropylene layer, lie in inlayer and ink contact, consequently, the utility model discloses an ink bag can solve the precipitate entering ink of ink bag and cause the obstructed problem of shower nozzle.

Description

Ink bag

Technical Field

The utility model relates to an ink bag, in particular to a multilayer film ink bag prepared by a coextrusion (coextrusion) mode.

Background

As various industries, such as publishing, textile, science and technology, and biomedical industries, increasingly use inkjet printing technology, how to more effectively preserve and maintain ink quality becomes an important issue. In the early days, ink jet printers were filled with ink using a hard shell type container, and in recent years, flexible ink bags have been developed. As the technology of ink is more and more advanced, the quality requirements of ink and the types of ink contents are more complicated and diversified, for example, some are volatile, some are corrosive, and some require strict blocking of light, air and water.

FIG. 1 is a schematic diagram of a prior art ink bag layer structure. In fig. 1, the ink bag is, in order from an inner layer to an outer layer, a Polyethylene (PE) layer 2, a nylon layer 4, an adhesive layer 5, an aluminum film 6, an adhesive layer 5, and a polyethylene terephthalate (PET) layer 8 as a printing layer. The polyethylene layer 2 can be used as a solvent volatilization resistant layer and a solvent barrier layer to be in contact with the outside, the nylon layer 4 can be used as a puncture-proof layer, the aluminum film 6 can be used for isolating light and air, and the polyethylene terephthalate layer 8 can be used as a printing layer. However, in the ink bag of the multilayer film, for example, the polyethylene layer 2 in contact with the ink may precipitate into the ink, which may cause the head to be easily clogged, and may seriously affect the life of the head. In addition, the ink bag adopting the aluminum film is easy to crease and generate fine cracks due to the flowing of the ink in the bag, so that the external light can easily irradiate the ink solvent in the ink bag through the cracks to cause the quality change of the ink solvent.

Therefore, there is a need for a new and improved ink bag to overcome the above-mentioned disadvantages of the prior art ink bag.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an ink bag that can solve because of precipitate causes the shower nozzle to block up the problem.

Therefore, the utility model provides a multilayer film ink bag which is prepared by a co-extrusion mode. The multilayer film of the ink bag sequentially comprises a chemical-resistant welding layer, a gas barrier layer, a light barrier layer and a puncture-proof layer from an inner layer to an outer layer, wherein the chemical-resistant welding layer comprises at least one polypropylene layer which is positioned at the innermost layer and is contacted with an ink solvent. The utility model discloses an ink bag comprises the multilayer film of coextrusion mode, can once only accomplish the preparation, compares current structure, and layer and interlamination have the preferred associativity, and is difficult for peeling off, and each layer can adopt the plastify material to constitute, and the ink bag also can be comparatively frivolous. The utility model discloses in, the inlayer that the ink bag contacted with the ink is the resistant butt fusion layer of polypropylene (PP), and it has chemical-resistance nature (chemical-resistance) and the hot welding ability of preferred, can block effectively that the precipitate on other layers of ink bag gets into in the ink, and then can avoid, eliminate the shower nozzle that above-mentioned precipitate caused and block the problem. And, the inner layer is a polypropylene layer with better heat-sealing ability, which has better heat-sealing strength and also provides better bonding strength, and the ink bag is not easy to break.

Preferably, the ink bag further comprises an adhesive layer located between the chemical-resistant welding layer and the gas barrier layer, between the gas barrier layer and the light barrier layer, and between the light barrier layer and the anti-puncture layer.

Preferably, the chemical-resistant welding layer of the ink bag comprises a first polypropylene layer and a second polypropylene layer, wherein the first polypropylene layer is positioned on the innermost layer and is contacted with the ink, and the second polypropylene layer is positioned between the first polypropylene layer and the adhesion layer.

Preferably, the light-blocking layer of the ink bag comprises at least one Polyethylene (PE) layer.

Preferably, the anti-puncture layer of the ink bag comprises a nylon layer.

Preferably, the multi-layer film of the ink bag has a thickness in the range of 50 to 240 μm.

The utility model discloses an utilize ink bag of coextrusion mode preparation, its inlayer that contacts with the ink is the polypropylene layer that has the better chemical resistance nature, owing to can solve and cause the shower nozzle to block the problem because of the precipitate, consequently also can prolong the life of shower nozzle.

Drawings

FIG. 1 is a schematic diagram of a prior art ink bag layer structure.

Fig. 2 shows a schematic diagram of the structure of an ink bag layer of a multilayer film prepared by coextrusion in accordance with an embodiment of the present invention.

2 polyethylene layer

4 Nylon layer

5 adhesive layer

6 aluminum thin film

8 polyethylene terephthalate layer

10 multilayer film

12 chemical resistant weld layer

121 first polypropylene layer

122 second polypropylene layer

14 adhesive layer

16 gas barrier layer

18 light-blocking layer

181 first polyethylene layer

182 second polyethylene layer

20 puncture-proof layer

Detailed Description

For a detailed understanding of the technical features and the practical effects of the present invention, and to be implemented in accordance with the content of the specification, the following detailed description of the preferred embodiments is further illustrated in the accompanying drawings. It is to be understood that layers may include other layers, unless otherwise specified.

With reference to the preferred embodiment shown in the drawings, the present invention provides an ink bag, which is composed of a multi-layer film prepared by co-extrusion. As shown in fig. 2, a schematic diagram of the multi-layer film 10 layer structure of the ink bag manufactured by co-extrusion is shown, the multi-layer film 10 of the ink bag may include a chemical-resistant welding layer 12, a gas barrier layer 16, a light barrier layer 18, and a puncture-proof layer 20 in sequence from the inner layer to the outer layer, and an adhesive layer 14 may be formed between the layers, for example, the adhesive layer 14 may be formed between the chemical-resistant welding layer 12 and the gas barrier layer 16, between the gas barrier layer 16 and the light barrier layer 18, and between the light barrier layer 18 and the puncture-proof layer 20. In one embodiment, the adhesive layer 14 can be made of a material with better chemical resistance. That is, the chemical-resistant welding layer 12, the gas barrier layer 16, the light barrier layer 18, the puncture-preventing layer 20, and the adhesive layer 14 may be formed by co-extrusion.

As shown in fig. 2, in the multi-layer film 10 of the ink bag of the embodiment of the present invention, the chemical-resistant welding layer 12 of the innermost layer may be made of polypropylene material with better chemical-resistant property, such as a first polypropylene layer 121 and a second polypropylene layer 122. In the present invention, the inner layer refers to a surface contacting with ink contained in the ink bag, and the outer layer may be a surface away from the ink, for example, a surface contacting with the outside air. Because the utility model discloses an adopt the polypropylene layer that has the better resistance to chemicals nature as the inlayer, contact with the ink, consequently can the separation effectively the precipitate of other layers in the multilayer film get into the ink, so can improve, eliminate because of the precipitate causes the problem that the shower nozzle blockked. In one embodiment, only one polypropylene layer may be used as the chemical-resistant weld layer 12. The second polypropylene layer 122 may be made of a colored polypropylene material.

In the multilayer film 10 of the ink bag according to the embodiment of the present invention, the gas barrier layer 16 may be an ethylene vinyl alcohol copolymer (EVOH) used as a barrier to the entry of the external air into the ink bag. The light-blocking layer 18 may include at least one Polyethylene (PE) layer for blocking external light from entering the ink bag. In fig. 2, two polyethylene layers, a first polyethylene layer 181 and a second polyethylene layer 182, are used, and may be black or white. The gas and light can be effectively blocked from entering the ink bag through the gas barrier layer 16 and the light barrier layer 18, so that the quality of the ink solvent can be preferably maintained.

The outermost layer in the multilayer film 10 of the ink bag of the embodiment of the present invention may be a puncture-proof layer 20, preferably a nylon layer with high strength, so as to increase the strength of the ink bag. The utility model discloses utilize the mode of coextrusion (coextrusion), with above-mentioned multilayer structure coextrusion shaping together, and set for to be located inlayer and ink contact with the polypropylene layer 12 of the resistant nature of utensil preferred, can solve the educt and cause the obstructed problem of shower nozzle in getting into the ink, can prolong shower nozzle life. In the coextrusion method, the material layers with similar properties or the layers with high bonding strength can be formed without using an additional adhesive layer, so that the multilayer film of the ink bag in the embodiment of the present invention can be omitted.

In one embodiment, the ink bag of the present invention can be used for containing solvent-based or UV ink, and the multi-layer film structure of the ink bag can have a thickness ranging from 50 to 240 micrometers (μm), preferably about 95 micrometers (μm). It should be understood that the thickness of the ink bag is only a preferred example and is not intended to limit the present invention. Those skilled in the art should be able to make appropriate changes and adjustments according to the needs.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the claims, and all other equivalent changes and modifications that do not depart from the spirit of the present invention should be included within the scope of the claims.

Claims (6)

1. An ink bag is composed of a multi-layer film prepared by coextrusion, the multi-layer film comprises a chemical-resistant welding layer, a gas barrier layer, a light barrier layer and a puncture-proof layer from an inner layer to an outer layer in sequence; wherein, the melting-resistant welding layer comprises at least one polypropylene layer, and the polypropylene layer is positioned at the innermost layer to be contacted with the ink.

2. The ink bag of claim 1, further comprising an adhesive layer between the chemically-resistant welding layer and the gas barrier layer, the gas barrier layer and the light barrier layer, and the light barrier layer and the anti-puncture layer.

3. The ink bag of claim 2 wherein the chemically-resistant weld layer comprises a first polypropylene layer and a second polypropylene layer, the first polypropylene layer being innermost and in contact with the ink, and the second polypropylene layer being between the first polypropylene layer and the adhesive layer.

4. The ink bag of claim 2 wherein the light blocking layer comprises at least one polyethylene layer.

5. The ink bag of claim 2 wherein the puncture resistant layer comprises a nylon layer.

6. The ink bag of claim 2, wherein the multilayer film has a thickness in a range of 50 to 240 microns.

Images