JP2006001268A - Ink package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ink package which can reliably prevent ink leakage at a piercing part of an ink extracting member and permeation of air, etc. into an ink package, and enables it to extract the ink until the package is almost emptied even when a small amount of the ink is remaning in the ink package. <P>SOLUTION: The ink package is formed by use of synthetic resin films such that the ink extracting member 9 can be pierced. The ink package is composed of A layers 5 of laminated films including a stretching polyethylene terephthalate film 2, an alminum foil 3 serving as a barrier layer laminated and adhered inside the film, and a non-stretching polyethylene film 4 laminated and adhered inside the foil; and B layers 7 including non-stretching polyethylene films 6 overlapped at inside the A layers 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an ink package of an ink cartridge that is set and used in a printer.

As a conventional ink package of this kind of ink cartridge, for example, as disclosed in Patent Document 1, it is composed of a laminated structure film in which a plurality of film sheets made of polyethylene resin or the like are laminated, and is a needle-like ink extraction member Is known in which ink leakage from the ink package and intrusion of air or the like into the ink package are prevented in a state where the ink package is inserted into the ink package.
JP 11-99659 A

  The ink package of the conventional ink cartridge described above is composed of a laminated structure film in which a plurality of film sheets composed of polyethylene resin or the like are laminated, but the type of film used is unstretched film or stretched film, etc. In view of the strength of the package, it is difficult to use only the unstretched film, and there may be a case where the stretched film and the unstretched film are laminated and used. When a laminated film with a stretched film and a non-stretched film is used, the unstretched film adheres to the ink extraction member at the piercing portion of the ink extraction member, and is expected to prevent ink leakage and prevent air from entering the ink package. On the other hand, since the stretched film is easily torn by the piercing of the ink extraction member, the unstretched film adhered to the stretched film may also be torn along with it. The film may not adhere to the ink extraction member.

  The object of the present invention is to solve such a problem, and can reliably prevent ink leakage at the piercing portion of the ink extraction member and air from entering the ink package, and a small amount of ink in the ink package. It is an object of the present invention to provide an ink package in which the ink can be taken out almost to the end.

  An ink package according to claim 1 of the present invention is an ink package configured to be able to pierce an ink extraction member using a synthetic resin film, and is formed from a stretched film and an unstretched film laminated and adhered to the inside thereof. It is characterized by being comprised by the A layer of the laminated film which consists of, and the B layer which consists of an unstretched film which overlaps the inner side of this A layer.

  The ink package according to claim 2, wherein the A layer and the B layer are bonded via an adhesive provided on at least one of the unstretched film of the A layer and the B layer on the facing surfaces of the A layer and the B layer. Thus, the adhesive is provided except for the piercing portion of the ink extraction member.

  The ink package according to claim 3, wherein an adhesion preventing layer is provided on at least one of the unstretched film of the A layer and the B layer on the facing surface of the A layer and the B layer at the piercing portion of the ink extraction member, and the A layer The B layer is bonded to a portion other than the adhesion preventing layer.

  As described above, the ink package of the present invention is composed of the stretched film and the A layer of the laminate film composed of the unstretched film laminated and adhered to the inside thereof, and the B layer composed of the unstretched film overlapping the inside of the A layer. By separating the A layer and the B layer from the beginning, or making them separable, the A layer of the laminate film composed of the stretched film and the unstretched film laminated and adhered to the inside by the piercing of the ink extraction member Even if a tear occurs, the B layer made of an unstretched polyethylene film does not cause a tear, and the B layer adheres closely to the ink extraction member, thereby preventing ink leakage and preventing air from entering the ink package. Even if the amount of ink in the ink package becomes small, the ink can be taken out almost to the end. Further, by joining the A layer and the B layer at a position excluding the pierced portion of the ink extraction member, the production can be smoothly performed without causing a displacement movement between the A layer and the B layer, and the production efficiency. Can be improved.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
First, the first embodiment shown in FIGS. 1 to 4 will be described. Reference numeral 1 denotes an ink package for containing ink, and the material of the ink package 1 is the extension of the outermost layer as shown in FIG. A layer 5 of a laminate film comprising the polyethylene terephthalate film 2 formed, an aluminum foil 3 as a gas or water vapor barrier layer laminated and adhered to the inside thereof, and an unstretched polyethylene film 4 laminated and adhered to the inside thereof, A plurality of layers overlapping the inside of the A layer 5, specifically, a B layer 7 composed of three unstretched polyethylene films 6, and a sheet in which the B layer 7 is stacked inside the A layer 5 in the longitudinal direction And the ink package 1 is formed by heat-sealing three sides excluding one side of the two-fold portion 8. The ink filling is performed on a cylindrical body formed by heat-sealing one side opposite to one side of the folded portion 8 of the folded sheet, and the cylindrical body is spaced at regular intervals. Ink package 1 filled with ink is completed by dividing while heat-sealing.

  The two-folded portion 8 becomes a pierced portion of the needle-like ink extraction member 9, and the fold-folded portion 8 is pressed inside the ink package 1 and formed in a flat state in order to facilitate the piercing of the ink extraction member 9.

  In a state where the ink package 1 is set in the printer, the needle-like ink extraction member 9 is pierced into the flat fold portion 8 of the ink package 1 to extract the ink inside the ink package 1. The package 1 comprises the stretched polyethylene terephthalate film 2 which is the outermost layer, the aluminum foil 3 which is laminated and adhered to the inside thereof, and the unstretched polyethylene film 4 which is laminated and adhered to the inside thereof. It is made of a sheet material composed of a laminated film A layer 5 and a B layer 7 made of three unstretched polyethylene films 6 inside the A layer 5. The A layer 5 and the B layer 7 Are not joined to each other, and are separated from each other. Even if a crack occurs, the B layer 7 made of a single piece of the unstretched polyethylene film 6 does not rip, but the B layer 7 is in close contact with the ink extraction member 9, and there are problems such as liquid leakage and air intrusion. Absent.

  Next, the second embodiment shown in FIGS. 5 to 8 will be described. In the second embodiment, in addition to the configuration of the first embodiment, the A layer 5 and the B layer 7 are provided. The unstretched polyethylene film 4 of the A layer 5 on the opposite surface is provided with a pressure-sensitive adhesive (so-called pressure-sensitive adhesive), specifically, a cold sealant 10 as an adhesive by a gravure printing technique, and the A layer 5 and the B layer 7 are combined. It joins with the force of the grade which does not peel naturally by the part of the cold seal agent 10 with the heater roll of 20 to 80 degreeC. Note that the range in which the cold sealant 10 is provided is set excluding the surrounding heat-sealed fusion portion excluding the folded portion 8 of the ink package 1 and the piercing portion of the ink extraction member 9.

  In this way, the A layer 5 and the B layer 7 are heated by a heater roll at 20 ° C. to 80 ° C. via the cold sealant 10 provided in a range excluding the fusion part by heat sealing and the piercing part of the ink extraction member 9. Since they are joined, manufacturing can be performed smoothly and manufacturing efficiency can be improved without causing displacement between the A layer 5 and the B layer 7.

  It should be noted that innumerable small irregularities are formed on the unstretched polyethylene film 4 side of the A layer 5 and / or on the surface of the B layer 7 on the opposing surfaces of the A layer 5 and the B layer 7 of the piercing portion of the ink extraction member 9. Thus, the bonding between the A layer 5 and the B layer 7 can be more reliably prevented.

  Next, a third embodiment shown in FIG. 9 will be described. In the second embodiment, the area between the A layer 5 and the B layer 7 is cold except for the fusion part by heat sealing around the folded part 8 of the ink package 1 and the pierced part of the ink extraction member 9. In the third embodiment, the A layer 5 and the B layer 7 are joined with the cold sealant 10 over the entire surface except for the pierced portion of the ink extraction member 9. Yes. The surface on which the cold sealant 10 is provided is the unstretched polyethylene film 4 side of the A layer 5 as in the second embodiment. In the third embodiment, when heat sealing is performed on three sides of the ink package 1 except for the folded portion 8, the cold sealant 10 is present at the position of the heat seal. No leakage of ink from the inside or peeling between the A layer and the B layer was observed as a result of the experiment, and there is no problem. As in the third embodiment, the cold sealant 10 used when the entire area between the A layer 5 and the B layer 7 is joined with the cold sealant 10 except for the pierced portion of the ink extraction member 9. If it is considered that this increases the cost, the cold sealing agent 10 is provided in a linear or spot shape on the unstretched polyethylene film 4 side of the A layer 5 within the range excluding the pierced portion of the ink extraction member 9. It is also possible to do so.

  In the second embodiment and the third embodiment, the cold sealant 10 as the adhesive is provided on the A layer 5 side, but may be provided on the B layer 7 side, or the A layer. 5 and B layer 7 may be provided.

  Further, the fourth embodiment shown in FIGS. 10 to 11 will be described. In order to prevent the movement of the A layer 5 and the B layer 7 during manufacture, the ink extraction member 9 is used in the fourth embodiment. An anti-adhesion layer 11 is provided on the unstretched polyethylene film 4 side of the A layer 5 on the facing surface of the A layer 5 and the B layer 7 at the position of the pierced portion by the gravure printing technique, and the A layer 5 and the B layer 7 Are joined at a portion other than the anti-adhesion layer 11 with a force that does not peel off naturally by heat of about 80 ° C. to 120 ° C. The anti-adhesion layer 11 may be formed using a release material blended with polyamide and nitrocellulose or a resin different from the unstretched polyethylene film constituting the overlapping surface of the A layer 5 and the B layer 7. it can.

Although the adhesion preventing layer 11 is provided on the A layer 5 side in the fourth embodiment, it may be provided on the B layer side, or may be provided on both the A layer 5 and the B layer 7. Also good.
Although the four embodiments have been described above, the configuration of the laminated sheet that is the material of the ink package 1 is not limited to the above. In addition to the rolled film such as the aluminum foil 5 as described above, the barrier layer may be a vapor-deposited film obtained by vapor-depositing aluminum or silica or alumina on the film, an ethylene / vinyl alcohol copolymer film, polyvinylidene chloride, or the like. It is also possible to use it. Further, in addition to the innermost layer of the A layer 5 being the unstretched polyethylene film 4, rayon or paper may be laminated in the middle of the laminated film.

  Furthermore, the form of the ink package 1 is not limited to that shown in the above-described embodiment.

It is a perspective view of the ink package in the 1st Embodiment of this invention. It is an expanded sectional view of the sheet | seat which comprises the ink package. FIG. 3 is a development view of the ink package. It is an expanded sectional view which shows the state which pierced the ink extraction member in the ink package. It is a perspective view of the ink package in the 2nd Embodiment of this invention. It is an expanded sectional view of the sheet | seat which comprises the ink package. FIG. 3 is a development view of the ink package. It is an expanded sectional view which shows the state which pierced the ink extraction member in the ink package. It is an expanded view of the ink package in the 3rd Embodiment of this invention. It is a perspective view of the ink package in the 4th Embodiment of this invention. It is an expanded sectional view of the sheet | seat which comprises the ink package.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ink package 2 Polyethylene terephthalate film 3 Aluminum foil 4 Unstretched polyethylene film 5 A layer 6 Unstretched polyethylene film 7 B layer 8 Folded part 9 Ink extraction member 10 Cold seal agent 11 Adhesion prevention layer

Claims (3)

An ink package configured to be able to pierce an ink extraction member using a synthetic resin film, wherein the A layer of a laminate film composed of a stretched film and an unstretched film laminated and adhered to the inside thereof, and the inside of the A layer An ink package comprising: a B layer made of an unstretched film that overlaps the substrate. The A layer and the B layer are joined via an adhesive provided on at least one of the unstretched film of the A layer and the B layer on the facing surfaces of the A layer and the B layer, and the adhesive is an ink extraction member. The ink package according to claim 1, wherein the ink package is provided excluding the piercing portion. An anti-adhesion layer is provided on at least one of the unstretched film of the A layer and the B layer on the facing surface of the A layer and the B layer at the piercing portion of the ink extraction member, and the A layer and the B layer are other than the anti-adhesion layer. The ink package according to claim 1, wherein the ink package is joined at a portion of the ink package.

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