CN203920038U - Liquid accommodating container - Google Patents

Abstract

The utility model provides a kind of liquid accommodating container.Even if larger flowing occurs inner liquid, the flexible film of flexible bag is also difficult to damage, bend.At the minor face (220c) of flexible bag (221), ratio (A/A ')/B of the size B on the bearing of trend of the long side in flexible bag (221) (220e, 220f) of the ratio A/A ' of the size A ' of the interval A of reinforcement weld portion (220g, 220h) and derivation member (230) and the 1st inner edge (220i) of reinforcement weld portion (220g, 220h) is made as 0 < (A/A ')/B≤0.2.In addition, between the 1st inner edge (220i) of reinforcement weld portion (220g, 220h) and the 2nd inner edge (220j), angulation θ is made as 180 ° of 147 °≤θ <.

Description

Liquid accommodating container

Technical field

The utility model relates to a kind of liquid accommodating container, and this liquid accommodating container has at the flexible bag of inside storage liquid and the export mouth of liquid.

Background technology

For example, washing agent supplementary with pack, the frequent liquid accommodating container of use in pack etc. for the supply of liquor, mainly have and receive the flexible bag of liquid and the export mouth of liquid in inside.Flexible bag be thermal welding thermoplastic system a pair of flexible film outer peripheral edges and be configured to can be out of shape bag-shaped, wherein also have the bag-shaped flexible bag with contact pin.On the other hand, export mouth runs through the derivation member of being located at the tubular being made up of synthetic resin, this derivation member be configured between the outer peripheral edges of each flexible film and with the outer peripheral edges thermal welding (for example, patent documentation 1) of each film.

In addition, aforesaid liquid accommodating container is also used in the print cartridge of the printing equipment of ink-jetting style.Because print cartridge circulates as running stores, the patience of the vibration while therefore needing to consider for the whereabouts in transport and processing procedure, transport etc.Therefore, be also sometimes accommodated in the outer container of the systems such as corrugated board and make its circulation (for example, patent documentation 2) having filled black liquid accommodating container.

Patent documentation 1: No. 4768550 communique of Japanese Patent

Patent documentation 2: TOHKEMY 2006-198778 communique

In the liquid accommodating container of said structure, for example, when because falling to waiting while having external force (vibration, impact etc.) to put on flexible bag, in the inside of flexible bag, liquid flow and make flexible bag body deformability.Therefore in order not produce damage because the distortion of flexible bag makes flexible bag, it is necessary doing in advance better preparation.

In addition, in the time that flexible bag bends because of distortion, exist the mobility of the liquid in flexible bag to be obstructed at press-bending position, the China ink in the downstream at press-bending position can not move to through press-bending position the situation of export mouth side.And, in above-mentioned print cartridge, owing to can not seeing from outside the flexible bag in outer container, even if therefore exist flexible bag that the distortion of bending, the possibility that it also can be kept to place as former state occur.So the China ink in the downstream at press-bending position is still stayed in flexible bag, but cause disconnected China ink.Therefore it is also necessary, carrying out in advance the preparation of press-bending that suppresses being accompanied by distortion of flexible bag and produce.

Utility model content

The problem that utility model will solve

The utility model In view of the foregoing completes, and applies external force even if the purpose of this utility model is to provide a kind of to flexible bag, and flexible bag also can be difficult to the liquid accommodating container that produces damage, bends.

For the scheme of dealing with problems

In order to achieve the above object, the liquid accommodating container of the technical program (for example has flexible bag, the flexible bag 221 of Fig. 2) and the derivation member of tubular is (for example, the derivation member 230 of Fig. 2), above-mentioned flexible bag is for example, by a pair of flexible film (, the flexible film 220a of Fig. 2, between outer peripheral edges 220b), carry out that thermal welding forms, above-mentioned derivation member (for example runs through the export mouth that is provided with the inside and outside connection of this flexible bag to get up, the export mouth 231 of Fig. 2), above-mentioned flexible bag by the long side of pair of parallel (for example, the long side 220e of Fig. 3, the front end edge that front end 220f) couples together (for example, the minor face 220c of Fig. 2) on, between the outer peripheral edges of above-mentioned a pair of flexible film, dispose this derivation member,

This liquid accommodating container is characterised in that,

The reinforcement weld portion that between being formed with respectively above-mentioned a pair of flexible film in two bight parts of above-mentioned flexible bag, direct heat welding forms (for example, the reinforcement weld portion 220g of Fig. 4, 220h), above-mentioned bight part is using following two parts as both sides, , the outer peripheral edge portion forming between the above-mentioned flexible film of direct heat welding of above-mentioned front end edge (for example, in the minor face 220c of Fig. 4, one in part except the part of derivation member 230 (size A ')), with the above-mentioned front end edge given size of distance in the above-mentioned long side being connected with this outer peripheral edge portion with interior (for example, from the inner side of the outer peripheral edges that formed by thermal welding of the minor face 220c of Fig. 4 with size C to the position E by minor face 220d side) long side part,

Each above-mentioned reinforcement weld portion for example has, with than the short size of afore mentioned rules size (, the size B of Fig. 4) the 1st inner edge that extends abreast from above-mentioned front end edge and above-mentioned long side is (for example, the 1st inner edge 220i of Fig. 4) and by the end of above-mentioned long side part (for example, the position E of Fig. 4) the 2nd inner edge that couples together with above-mentioned the 1st inner edge is (for example, the 2nd inner edge 220j of Fig. 4)

According to the ratio A/A ' of the size A ' on the bearing of trend of above-mentioned front end edge of the interval A on the bearing of trend of above-mentioned front end edge of two above-mentioned reinforcement weld portion and above-mentioned derivation member, this than angulation θ between ratio (A/A ')/B of the size B of A/A ' and above-mentioned the 1st inner edge and above-mentioned the 1st inner edge and above-mentioned the 2nd inner edge (for example, the angle θ of Fig. 4) decide the shape of each above-mentioned reinforcement weld portion, wherein, A '≤A.

In the liquid accommodating container of technique scheme, the bight between front end edge and the long side of flexible bag is formed with the reinforcement weld portion using above-mentioned front end edge and long side as both sides.The effect of this reinforcement weld portion is, even if there is larger flowing in the liquid of the inside of flexible bag, deriving in the outer peripheral edge portion forming between the direct heat welding flexible film near, flexible bag of member, flexible film can not produce damage under the effect of the load applying because of the distortion of flexible bag yet.The shape of this reinforcement weld portion is that resistance to damage (broken bag) property and the withstand voltage curved property by considering flexible bag decides.Below, the feature of the liquid accommodating container of technique scheme is divided into resistance to damage (broken bag) property and withstand voltage curved property describes.

First, about resistance to damage (broken bag) property of flexible bag, preferably, in the time that the effect of the external force because putting on flexible bag (vibration, impact etc.) is moved inner liquid, on the flexible film that forms flexible bag, can concentrate and apply larger stress.

But, in the time that the liquid of the inside of flexible bag is moved, in the time that liquid flow into two shorter than other parts of inside dimension on the bearing of trend of front end edge of flexible bag and strengthens between weld portion, compared with the situation that flow into other parts with liquid, the stress that puts on flexible film becomes large.And in the time that liquid flow into two parts of strengthening between weld portion of flexible bag, the stress that puts on flexible film becomes the highest in two blocked front end edge parts of strengthening between weld portion of the progress path of the liquid flowing into.

Exist and clip the part forming between the outer peripheral edges that derive a pair of flexible film of member thermal welding two front end edge parts of strengthening between weld portion.In addition, size on the bearing of trend in front end edge of deriving member is greater than the interval of two reinforcement weld portion, also has in the both sides that clip the part forming between the outer peripheral edges that derive a pair of flexible film of member thermal welding the part forming between the outer peripheral edges of a pair of flexible film of direct heat welding.

A pair of flexible film is clipping the interval of deriving the part forming between member thermal welding outer peripheral edges and originally have the thickness size that derives member.Therefore, even if the liquid moving in the inside of flexible bag flow into this part, can there is not larger dilatancy in flexible film yet, and the tendency that larger stress concentrates on a position and put on flexible film is lower.

On the other hand, the both sides of deriving the part forming between member thermal welding outer peripheral edges in the case of clipping exist the part forming between direct heat welding outer peripheral edges, in the time that liquid flow into this part, the direction expansion that the flexible film part of the inner side of the outer peripheral edges that thermal welding forms separates towards each other because of influent, puts on it and strengthens the boundary section between weld portion thereby stress is concentrated.

And, clipping the part forming between the outer peripheral edges that derive a pair of flexible film of member thermal welding and strengthening between weld portion, the part forming between direct heat welding outer peripheral edges exists more extensively, the amount of liquid that flows into this part is more, thereby the direction that flexible film separates is towards each other expanded largelyr.Thus, concentrate the stress putting on and strengthen the flexible film of the boundary section between weld portion also to become large.

Thereby, two interval A on the bearing of trend of front end edge that strengthen weld portion are made as lower with the ratio A/A ' (wherein A '≤A) of the size A ' on the bearing of trend of front end edge that derives member, clipping the part forming between the outer peripheral edges that derive member thermal welding a pair of flexible film and strengthening not having as much as possible the part forming between direct heat welding outer peripheral edges between weld portion by making, contribute to suppress to be created in because of the effect of external force the inflow of the liquid inside of flexible bag moving, and concentrate the situation that applies larger stress in two parts of strengthening between weld portion of front end edge.

In addition, the inside dimension on the bearing of trend that is formed with front end edge part, flexible bag of strengthening weld portion narrows along with approaching front end edge gradually near of the 2nd inner edge of strengthening weld portion.On the other hand, this inside dimension is certain near of the 1st inner edge.

Therefore, at liquid because the inside that acts on flexible bag of external force is in the time that two parts of strengthening between weld portion of front end edge move, the tendency that makes the fluid pressure of liquid increase because of the minimizing of inside dimension near of the 2nd inner edge is larger, near of the 1st inner edge because the tendency that fluid friction reduces the fluid pressure of liquid is larger.

Therefore, by the size B on the bearing of trend of long side of the 1st inner edge is made as longer, contribute to the effect suppressing because of external force to move and arrive two situations of strengthening the fluid pressure of the liquid of the front end edge part between weld portion in the inside of flexible bag, and contribute to two effects of strengthening the liquid of the part between weld portion that suppress because arriving front end edge to concentrate the situation that applies larger stress.

And, if the size B of the 1st inner edge is longer, the fluid pressure of the liquid of the part between two reinforcement weld portion of arrival front end edge is lower, even if two ratio A/A ' (wherein A '≤A) that strengthen the size A ' on the interval A on the bearing of trend of front end edge of weld portion and the bearing of trend of the front end edge of derivation member are higher a little, sometimes also can guarantee resistance to broken bag as a whole.Therefore, preferably, the size B of the 1st inner edge decides by it and than the relation between A/A '.

Particularly, by being made as lower by above-mentioned than A/A ' and ratio (A/A ')/B of the size B of the 1st inner edge, make two fluid pressure balances of strengthening the patience of the stress of part between weld portion and arriving the liquid of this part for front end edge, contribute to two effects of strengthening the liquid of the part between weld portion that suppress because arriving front end edge to concentrate the situation that applies larger stress.

Then,, about the withstand voltage curved property of flexible bag, the liquid in flexible bag plays the effect of the rigidity of strengthening flexible bag.And, for flexible bag, on the bearing of trend of front end edge two to strengthen inside dimension on the bearing of trend of front end edge that the 1st inner edge part respect to one another of weld portion is flexible bags the shortest, therefore the liquid in flexible bag is minimum for the degree of rigidity of strengthening flexible bag.

And, in the 1st inner edge part respect to one another of two reinforcement weld portion, in the part midway of the 1st inner edge, the inner side of flexible bag becomes linearity, inside dimension on the bearing of trend of the front end edge of flexible bag is certain, therefore the rigidity of flexible bag is certain, because the flexible bag of effect of external force is difficult to bend.

On the other hand, in the 1st inner edge part respect to one another of two reinforcement weld portion, connecting portion between the 1st inner edge and the 2nd inner edge, the inner side shape of flexible bag bends, the inside dimension on the bearing of trend of front end edge of flexible bag changes, the rigidity of flexible bag changes taking this connecting portion as boundary, and therefore flexible bag is easy to produce taking connecting portion as boundary press-bending.

Therefore, by angulation θ between the 1st inner edge and the 2nd inner edge is made as larger, make the connecting portion between the 1st inner edge and the 2nd inner edge more approach straight line, make because the rigidity of the reinforced flexible bag of effect of inner liquid can not occur to change significantly taking connecting portion as boundary, contribute to make flexible bag to be difficult to connecting portion between the 1st inner edge and the 2nd inner edge to occur the situation of press-bending.

In addition, connecting portion between the 1st inner edge and front end edge, the outer peripheral edge portion that the direct heat welding of a pair of flexible film forms and the part adjacency that is formed with flexible bag between flexible film, because the part of rigidity and the part part adjacency of not strengthened rigidity because of the effect of the liquid in flexible bag have been strengthened in the effect of the liquid in flexible bag.Like this, the rigidity of flexible bag also can change by the connecting portion between the 1st inner edge and front end edge, and therefore flexible bag is easy to produce taking this connecting portion as boundary press-bending.

But, exist and clip the part forming between the outer peripheral edges of a pair of flexible film of derivation member thermal welding higher than the rigidity of flexible film in front end edge, this part is the closer to the connecting portion between the 1st inner edge and front end edge, and the rigidity of this part of not strengthening because of the effect of the liquid in flexible bag can be higher because deriving the degree that the rigidity of member strengthens.So the variation of the rigidity of the connecting portion between the 1st inner edge and front end edge diminishes, the connecting portion that flexible bag is difficult between the 1st inner edge and front end edge bends.

Therefore, by by two strengthen weld portion the interval A on the bearing of trend of front end edge and derive member the size A ' on the bearing of trend of front end edge ratio A/A ' (wherein, A '≤A) be made as lower, on the bearing of trend of front end edge, make the close member of deriving of connecting portion between the 1st inner edge and front end edge, and the rigidity that makes flexible bag can larger variation not occur taking this connecting portion as boundary, contribute to make flexible bag to be difficult to effect because of the external force connecting portion between the 1st inner edge and front end edge the situation of bending occurs.

Therefore, by strengthening the interval A on the bearing of trend of front end edge of weld portion and derive ratio A/A ', this shape that decides each reinforcement weld portion than angulation θ between ratio (A/A ')/B of the size B of A/A ' and the 1st inner edge and the 1st inner edge and the 2nd inner edge of the size A ' on the bearing of trend of front end edge of member according to two, even if external force puts on flexible bag, also can make flexible bag be difficult to damage, bend.

In addition, in technique scheme, be 1≤A/A '≤1.6 by making above-mentioned than A/A ', above-mentioned is 0 < (A/A ')/B≤0.2 than (A/A ')/B, above-mentioned angle θ is 180 ° of 147 °≤θ <, put on flexible bag even if can realize more significantly external force, flexible bag is also difficult to damage, bend.

The effect of utility model

Adopt the utility model, even if external force puts on flexible bag, also can make flexible bag be difficult to damage, bend.

Brief description of the drawings

Fig. 1 (a)～Fig. 1 (c) represents the printing equipment as print cartridge by the liquid accommodating container of an embodiment of the present utility model, Fig. 1 (a) is top view, Fig. 1 (b) is front view, and Fig. 1 (c) is right view.

Fig. 2 is the stereogram of the flexible bag of the liquid accommodating container of the print cartridge of presentation graphs 1 (a)～Fig. 1 (c) embodiment of the present utility model used.

Fig. 3 is the top view of the major part of the flexible bag of presentation graphs 2.

Fig. 4 is the key diagram of the major part of Watch with magnifier diagram 3.

Fig. 5 (a)～Fig. 5 (c) is the key diagram of the process of the flexible bag of presentation graphs 2 while bending distortion.

Fig. 6 is the top view that represents the major part of the flexible bag of the liquid accommodating container of reference example.

Description of reference numerals

1 apparatus main body; 30 print cartridge installing mechanisms; 100 printing equipments; 200 print cartridges; 220 liquid accommodating containers; 220A liquid accommodating container; 220a, 220b flexible film; 220c, 220d minor face; 220e, 220f long side; 220g, 220h, 220k, 220l strengthen weld portion; 220i the 1st inner edge; 220j the 2nd inner edge; 220m inner edge; 221, the flexible bag of 221A; 230 derive member; 231 export mouths; 330 arithmetic processing apparatus; 340 guidance panels; 350 upper surface devices; A strengthens the interval of weld portion; The size of A ' derivation member; The size of B the 1st inner edge; C strengthens the size on the bearing of trend of long side of weld portion; The size of D the 2nd inner edge; D2 charge and discharge operations direction; Connecting portion between E the 2nd inner edge and long side; Boundary position between F the 1st inner edge and the 2nd inner edge; Connecting portion between G minor face and the 1st inner edge; The size on the bearing of trend of long side of H inner edge; The size of I inner edge; Connecting portion between J inner edge and long side; Connecting portion between K minor face and inner edge; The inside dimension of the flexible bag of L; The part forming between flexible film on M direct heat welding minor face; The line of demarcation of N press-bending distortion; Wa thermal welding width; X export mouth runs through direction; Angulation between θ the 1st inner edge and the 2nd inner edge.

Detailed description of the invention

Below, with reference to the accompanying drawings of embodiment of the present utility model.First, with reference to Fig. 1 explanation, the liquid accommodating container of an embodiment of the present utility model is used as to the printing equipment of print cartridge.

The overall structure of printing equipment

Fig. 1 (a)～Fig. 1 (c) represents the printing equipment as print cartridge by the liquid accommodating container of an embodiment of the present utility model, Fig. 1 (a) is top view, Fig. 1 (b) is front view, and Fig. 1 (c) is right view.The printing equipment 100 of the present embodiment shown in Fig. 1 (a)～Fig. 1 (c) is the line color printer of ink-jetting style.Printing equipment 100 has multiple being formed with and is permitted multi-jet black head, sprays the China ink of black or colour and prints with behavior unit from each China ink head, on the printing sheets on conveyer belt, forms multiple images in overlapped mode.

In the present embodiment, above-mentioned China ink head is along four of the throughput direction alignment arrangements of paper, prints and forms coloured image in the overlapped mode of image of all kinds on paper.There is arithmetic processing apparatus 330 in the inside of printing equipment 100, utilize this arithmetic processing apparatus 330, except carrying out the driving control by above-mentioned black printing treatment of carrying out, conveying mechanism, also carry out and supply with from print cartridge the control that China ink is relevant.

This arithmetic processing apparatus 330 is by hardware such as processor, memory and other electronic circuits such as CPU, DSP (Digital Signal Processor, digital signal processor) or has the computing assembly that the software such as program or the combination of above-mentioned hardware and software etc. of this function form.Suitably read-in programme and carry out this program of arithmetic processing apparatus 330, thus various functional units constructed virtually, utilize each functional unit of constructing to carry out the action control of the processing relevant to view data, each several part, various processing for user's operation.In addition, this arithmetic processing apparatus 330 is connected with guidance panel 340, can receive via this guidance panel 340 user's instruction, setting operation.

Printing equipment 100 is provided with the print cartridge installing mechanism 30 for print cartridge 200 is installed at the upper surface of apparatus main body 1, arranges and is filled with multiple (being four here) above-mentioned print cartridge 200 of all kinds with respect to this print cartridge installing mechanism 30.On this print cartridge installing mechanism 30, be provided with the cradle portion as the charging crane of print cartridge 200 towards horizontal direction (charge and discharge operations direction D2).In addition, be equipped with upper surface device 350 in the mode of the top that covers this print cartridge installing mechanism 30, insert print cartridge 200 by along continuous straight runs between the lower surface at this upper surface device 350 and the upper surface of apparatus main body 1, carry out the filling of print cartridge 200.In this upper surface device 350, for example dispose feeder and guidance panel etc.

Print cartridge 200 has can be with respect to the casing box (case that corrugation is made of paper of the flat cuboid of printing equipment 100 along continuous straight runs handling, not shown), contain in the inside of this casing box as the liquid accommodating container of an embodiment of the present utility model of accommodating black bag.

The overall structure of the liquid accommodating container of embodiment

Fig. 2 is the stereogram of the flexible bag of the liquid accommodating container of the print cartridge 200 of presentation graphs 1 (a)～Fig. 1 (c) embodiment of the present utility model used, and Fig. 3 is the top view of the flexible bag of this liquid accommodating container.As shown in Figure 2, the liquid accommodating container 220 of present embodiment comprises the flexible bag 221 of rectangle and is installed on the derivation member 230 on one side of flexible bag 221.

Flexible bag 221 is to utilize thermal welding the outer peripheral edges of a pair of flexible film 220a, 220b to be fixed and the bag that forms, derives member 230 and is located on the minor face 220c in two minor face 220c, 220d of the flexible bag 221 orthogonal with charge and discharge operations direction D2.

Deriving member 230 is the synthetic resins that run through the tubular that is provided with the export mouth 231 that the inside and outside connection of flexible bag 221 is got up, and this derivation member 230 has the rigidity that independently can guarantee export mouth 231 with the expansion situation of the flexible bag 221 corresponding with black residual quantity.As shown in Figure 3, the outer peripheral face of deriving the base end side of member 230 strides across width W a in running through of export mouth 231 on direction X, and be clipped between the outer peripheral edges of minor face 220c of flexible film 220a, 220b, by seamlessly thermal welding.

The front that derives member 230 is outstanding to the outside of flexible bag 221, liquid accommodating container 220 is being contained under the state of not shown casing box, derives member 230 and exposes the outside at casing box.

But, in the minor face 220c of flexible bag 221, clipping in the outer peripheral edge portion forming between derivation member 230 thermal welding flexible film 220a, 220b, owing to utilizing the derivation member 230 higher than the rigidity of flexible film 220a, 220b to strengthen intensity, the patience of the broken bag while therefore distortion for flexible bag 221 etc. is higher.

On the other hand, do not clipping in the outer peripheral edge portion that derives member 230 and form between direct heat welding flexible film 220a, 220b, owing to not utilizing the derivation member 230 that rigidity is higher to strengthen, the patience of the broken bag while therefore distortion for flexible bag 221 etc. is lower.

Therefore, in the liquid accommodating container 220 of present embodiment, on the minor face 220c of flexible bag 221, for the outer peripheral edge portion of strengthening forming between direct heat welding flexible film 220a, 220b, being provided with of flexible bag 221 derive the minor face 220c of member 230 and and this minor face 220c two long side 220e, 220f being connected between each bight on be provided with reinforcement weld portion 220g, 220h.

As in Fig. 4, to major part, amplification represents, this reinforcement weld portion 220g, 220h be the bight between the minor face 220c and long side 220e, the 220f that derive member 230 sides respectively, in each suitable size range, expand the welding width of the outer peripheral edges of flexible film 220a, 220b.Particularly, strengthen weld portion 220g, 220h and be the trapezoidal shape being formed by the 1st inner edge 220i and the 2nd inner edge 220j as both sides and in the inner side of flexible bag 221 using the minor face 220c of flexible bag 221 and long side 220e, 220f.On each reinforcement weld portion 220g, 220h, directly to carrying out thermal welding between flexible film 220a, 220b.

Strengthening weld portion 220g, the 1st inner edge 220i of 220h and long side 220e, the 220f of flexible bag 221 extends abreast.In addition, the 2nd inner edge 220j will be extended to the hypotenuse coupling together by the position E of minor face 220d side, with the end by minor face 220d side of the 1st inner edge 220i from minor face 220c with size C by the inner side of the outer peripheral edges after thermal welding.Between the 1st inner edge 220i and the 2nd inner edge 220j, coupled together by curve.

Be provided with in the part of strengthening weld portion 220g, 220h, the welding width of flexible film 220a, 220b increases, and increases for the resistance to impact of the load being produced by distortion because of flexible bag 221.Thereby, on the minor face 220c of flexible bag 221, utilize and strengthen weld portion 220g, 220h reinforcement not across deriving the outer peripheral edge portion forming between member 230 ground direct heat welding flexible film 220a, 220b, this outer peripheral edge portion is difficult to impaired.

But, in aforesaid liquid accommodating container 220, in the time that flexible bag 221 deforms and bends, exist specific pressure turn of bilge position by minor face 220d side, namely the bend China ink in downstream at position can not move to through press-bending position the situation of export mouth 231 sides.Reinforcement weld portion 220g, the 220h that therefore, need to be formed at flexible bag 221 is used as preventing making inner China ink can not be supplied to printing equipment 100 and preventing from making hindering the structure that so flexible bag 221 that China ink moves to export mouth 231 bends because broken bag occurs flexible bag 221.

Therefore,, in the liquid accommodating container 220 of present embodiment, as described below, by considering resistance to damage (broken bag) property and the withstand voltage curved property of flexible bag 221, decide the shape of strengthening weld portion 220g, 220h.

Consider the structure of the reinforcement weld portion of resistance to broken bag

First,, in the time of flexible bag 221 broken bag, inner China ink spills and can not supply with to printing equipment 100.Therefore it is important, making flexible bag 221 have resistance to broken bag.

But the broken bag of flexible bag 221 is mainly in the time that the inner China ink of the external force because putting on flexible bag 221 (vibration, impact etc.) moves, on flexible film 220a, 220b, concentrate to apply compared with large stress to produce.

Therefore,, in order to improve the resistance to broken bag of flexible bag 221, the interior shape that designs flexible bag 221 can not be formed on the mode at the concentrated position that applies larger stress under the black mobile effect in flexible bag 221 is effective.

At this, for the inside dimension L on the bearing of trend of the minor face 220c of flexible bag 221, shorter than the inside dimension L by minor face 220d side by being provided with the inside dimension L of the minor face 220c side of strengthening weld portion 220g, 220h.In addition,, even in minor face 220c side, compared with the inside dimension L of the part that is positioned at the 2nd inner edge 220j of flexible bag 221, the inside dimension L of the part that is positioned at the 1st inner edge 220i of flexible bag 221 is also shorter.

Therefore, at China ink, in the case of move the inside of flexible bag 221, at the China ink of minor face 220d side, when strengthening weld portion 220g, 220h, the fluid pressure of China ink rises, and in the time arriving minor face 220c and block progress path, flexible film 220a, 220b bear the larger stress from China ink.This larger stress is elaborated.

As shown in Figure 4, two minor face 220c parts of strengthening between weld portion 220g, 220h, exist on the bearing of trend of minor face 220c and clip with the size of A ' part forming between the outer peripheral edges that derive member 230 thermal welding flexible film 220a, 220b.

And, in the present embodiment, compared with deriving the size A ' on the bearing of trend of minor face 220c of member 230, two interval A that strengthen weld portion 220g, 220h are larger, therefore also have in the both sides that clip the part forming between the outer peripheral edges that derive member 230 thermal welding flexible film 220a, 220b the part forming between the outer peripheral edges of direct heat welding flexible film 220a, 220b.

Flexible film 220a, 220b are at the interval that clips the part forming between the outer peripheral edges that derive member 230 thermal welding flexible film 220a, 220b and originally have the thickness size that derives member 230.Thereby, even if the China ink moving in the inside of flexible bag 221 flows into minor face 220c, derive the part forming between member 230 thermal welding flexible film 220a, 220b larger dilatancy can not occur yet clipping, the tendency that larger stress concentrates on a position and put on flexible film 220a, 220b is lower.

On the other hand, there is in the both sides that clip the part forming between the outer peripheral edges that derive member 230 thermal welding flexible film 220a, 220b the part forming between the outer peripheral edges of direct heat welding flexible film 220a, 220b as shown in scope M in Fig. 4.In the time that China ink flows into this part M, the direction expansion separating towards each other because of the China ink flowing into than this part M part in the inner part of flexible film 220a, 220b, puts on it and strengthens the boundary section between weld portion 220g, 220h thereby stress is concentrated.

And, the minor face 220c part that forms between the outer peripheral edges of direct heat welding flexible film 220a, 220b (from minor face 220c, two parts of strengthening the interval A between weld portion 220g, 220h remove remaining part after the part that has the size A ' that derives member 230) exists more extensively, the black amount that flows into this part M is more, thereby the direction that flexible film 220a, 220b are separated towards each other because of the black effect flowing into is expanded largelyr.Thus, concentrate the stress putting on and strengthen flexible film 220a, the 220b of the boundary section between weld portion 220g, 220h also to become large.

Therefore, preferably, two interval A on the bearing of trend of minor face 220c that strengthen weld portion 220g, 220h are made as lower with the ratio A/A ' (but A '≤A) of the size A ' on the bearing of trend of minor face 220c that derives member 230.Be fixed value owing to deriving the size A ' of member 230, be therefore made as and lowlyer refer to that it is not too large that two interval A that strengthen between weld portion 220g, 220h are made as with respect to the size A ' of derivation member 230 than A/A '.

If it is not too large that two interval A that strengthen between weld portion 220g, 220h are made as with respect to the size A ' that derives member 230, between the part forming in the outer peripheral edges that clip derivation member 230 thermal welding flexible film 220a, 220b and reinforcement weld portion 220g, 220h, the part M that the outer peripheral edges of direct heat welding flexible film 220a, 220b form just becomes hardly and exists.

If the existence range of the part M that the outer peripheral edges of direct heat welding flexible film 220a, 220b form is less, the China ink flowing into herein also tails off, and therefore contributes to the stress that suppresses larger to concentrate the minor face 220c part putting between two reinforcement weld portion 220g, 220h.

But, be formed with inside dimension L on the bearing of trend of minor face 220c part, flexible bag 221 that strengthens weld portion 220g, 220h near of the 2nd inner edge 220j of strengthening weld portion 220g, 220h along with narrowing gradually near minor face 220c.On the other hand, this inside dimension L is certain near of the 1st inner edge 220i.

Therefore, when China ink in the inside of flexible bag 221 in the time that two parts of strengthening between weld portion 220g, 220h of minor face 220c move, in near of the 2nd inner edge 220j because the minimizing of inside dimension L makes the tendency of rising of black fluid pressure larger, near of the 1st inner edge 220i because the tendency that fluid friction reduces black fluid pressure is larger.

Therefore, if the size B on the bearing of trend of long side 220e, 220f of the 1st inner edge 220i is made as longer, can suppress lowlyer by move and flow into two black fluid pressures of strengthening the minor face 220c part between weld portion 220g, 220h in the inside of flexible bag 221.If the black fluid pressure flowing into is lower, contribute to suppress to put on two minor face 220c parts of strengthening between weld portion 220g, 220h because the black effect of inflow is concentrated larger stress.

In addition, if the size B of the 1st inner edge 220i is longer, arrive two black fluid pressures of strengthening the minor face 220c part between weld portion 220g, 220h lower, even if two interval A on the bearing of trend of minor face 220c that strengthen weld portion 220g, 220h are higher a little with the ratio A/A ' of the size A ' on the bearing of trend of minor face 220c of derivation member 230, sometimes also can guarantee resistance to broken bag as a whole.Therefore, preferably, the size B of the 1st inner edge 220i decides by it and than the relation between A/A '.

Particularly, by being made as lower by above-mentioned than A/A ' and ratio (A/A ')/B of the size B of the 1st inner edge 220i, make patience and the black fluid pressure balance that arrives this part for the stress of the minor face 220c part between two reinforcement weld portion 220g, 220h, contribute to the black effects that suppress because flowing into two minor face 220c parts between reinforcement weld portion 220g, 220h to make larger stress concentrate the situation that puts on above-mentioned part M.

In addition, the size A ' on the bearing of trend of minor face 220c of derivation member 230 is fixed value as mentioned above.And the interval A on the bearing of trend of minor face 220c of two reinforcement weld portion 220g, 220h comprises to clip derives the part that member 230 thermal welding flexible film 220a, 220b form.

Thereby two interval A on the bearing of trend of minor face 220c that strengthen weld portion 220g, 220h are at least the above size of size A ' that derives member 230, hence one can see that, becomes the value taking " 1 " as minimum of a value than A/A '.

And, preferably, two interval A on the bearing of trend of minor face 220c that strengthen weld portion 220g, 220h with derive member 230 size A ' ratio A/A ', be particularly 1≤A/A '≤1.6.

In addition preferably, be particularly 0 < (A/A ')/B≤0.2 than A/A ' with ratio (A/A ')/B of the size B of the 1st inner edge.About the reason that preferably will be made as value as described above than A/A ' with than (A/A ')/B, be elaborated later.

Consider the structure of the reinforcement weld portion of withstand voltage curved property

Then, in the time that distortion occurs to bend flexible bag 221, exist the black mobility in flexible bag 221 to be obstructed at press-bending position, specific pressure turn of bilge position can not move to through press-bending position the situation of export mouth 231 sides by the China ink of minor face 220d side.

And, in print cartridge 200, owing to can not seeing from outside the flexible bag 221 in not shown casing box, even if therefore exist flexible bag 221 that the distortion of bending, the possibility that it also can be kept to place as former state occur.So the China ink in the downstream at press-bending position is still stayed in flexible bag 221, but cause disconnected China ink.Therefore it is also important, making flexible bag 221 have withstand voltage curved property.

But the press-bending of flexible bag 221 is by the effect of the external force because putting on flexible bag 221 (vibration, impact etc.), flexible bag 221 to be deformed to produce.Therefore,, in order to improve the withstand voltage curved property of flexible bag, it is effective that the mode of rigidity that is difficult to distortion to make it have designs flexible bag 221.

At this, the rigidity of flexible bag 221 is strengthened by inner China ink.And, the China ink in flexible bag 221 strengthen flexible bag 221 rigidity degree because of the size of the inside dimension L of flexible bag 221 different.

For example, the ratio on the bearing of trend of long side 220e, 220f is strengthened weld portion 220g, the 220h part inside dimension L maximum in flexible bag 221 by minor face 220d side, and keeps certain.So the rigid package of the flexible bag 221 of this part keeps certain containing the part of being strengthened by China ink with higher value.Higher and keep certain part in rigidity like this, be relatively difficult to produce the press-bending distortion of flexible bag 221.

On the other hand, in part flexible bag 221, that strengthen the 2nd inner edge 220j of weld portion 220g, 220h, the inside dimension L on the bearing of trend of minor face 220c of flexible bag 221 becomes less the closer to minor face 220c, and the rigidity of flexible bag 221 also becomes lower the closer to minor face 220c.In addition, inside dimension L keeps certain in the part of the 1st inner edge 220i that strengthens weld portion 220g, 220h with size minimum in flexible bag 221, and the rigidity of flexible bag 221 is also certain with minimum Strength retention.

The forming section that the press-bending distortion of flexible bag 221 is easy to reinforcement weld portion 220g, the 220h relatively low in the rigidity of flexible bag 221 produces, wherein, due to the forming section at the 1st inner edge 220i, on the bearing of trend of long side 220e, 220f, rigidity keeps certain, is therefore relatively difficult to occur the distortion of bending.The press-bending distortion of flexible bag 221 is mainly boundary position generation that be easy to change in the rigidity of flexible bag 221, between the 1st inner edge 220i and the 2nd inner edge 220j.

Fig. 5 (a)～Fig. 5 (c) is the key diagram of the process while representing flexible bag 221 press-bending distortion.In these figure, represent enlargedly to the reinforcement weld portion 220g that the bearing of trend of long side 220e, 220f has applied in the flexible bag 221 of loading, rigidity is relatively low, the part of 220h.

In the time of the load flexible bag 221 being applied to the bearing of trend of long side 220e, 220f, in the part of strengthening weld portion 220g, 220h, first, as shown in Fig. 5 (a), flexible bag 221 produces flexural deformation on the line of the boundary position F through the 1st inner edge 220i and the 2nd inner edge 220j.In the time that the load that flexible bag 221 is applied is larger, as shown in Fig. 5 (b), the flexural deformation of strengthening weld portion 220g, 220h further develops on the line of demarcation N that the boundary position F between the 1st inner edge 220i of each reinforcement weld portion 220g, 220h and the 2nd inner edge 220j is linked, finally, as shown in Fig. 5 (c), cause and become the 1st inner edge 220i and the press-bending deformation state of the 2nd inner edge 220j taking boundary position F as demarcating and getting up in the folded of flexible bag 221.

In the time that flexible bag 221 produces such press-bending distortion, the boundary position F between the 1st inner edge 220i and the 2nd inner edge 220j is absorbed in the inner side of flexible bag 221.And the 2nd inner edge 220j folds up with the long side 220e, the 220f that are attached thereto, the China ink in the space that these limits surround becomes can not be interior to export mouth 231 side shiftings at flexible bag 221.

Therefore, preferably, angulation θ between the 1st inner edge 220i shown in Fig. 4 and the 2nd inner edge 220j is made as larger.Between by the 1st inner edge 220i and the 2nd inner edge 220j, angulation θ is made as when larger, the boundary position F between the 1st inner edge 220i and the 2nd inner edge 220j, and the shape of the inner side of flexible bag 221 approaches straight line.Thus, the variation in rigidity of the flexible bag 221 of the boundary position F between the 1st inner edge 220i and the 2nd inner edge 220j diminishes.If the variation in rigidity at boundary F place, position is less, contribute to make flexible bag 221 to be difficult to the distortion of bending on the line of demarcation N that the boundary position F between the 1st inner edge 220i of each reinforcement weld portion 220g, 220h and the 2nd inner edge 220j is linked.

In addition, connecting portion G between the 1st inner edge 220i and the minor face 220c of two reinforcement weld portion 220g, 220h, the outer peripheral edge portion that direct heat welding flexible film 220a, 220b form and the part adjacency that is formed with flexible bag 221 between flexible film 220a, 220b, because the part of rigidity and the part adjacency of not strengthened rigidity because of black effect have been strengthened in the black effect in flexible bag 221.Like this, the rigidity of flexible bag 221 also can change by the connecting portion G between the 1st inner edge 220i and minor face 220c, and therefore flexible bag 221 is easy to bend taking this connecting portion G as boundary.

But, exist and clip the derivation member 230 thermal welding flexible film 220as higher than the rigidity of flexible film 220a, 220b, the part that 220b forms at minor face 220c.If this part is near the connecting portion G between the 1st inner edge 220i and minor face 220c, the rigidity of the thermal welding part of flexible film 220a, the 220b not strengthening because of the black effect in flexible bag 221 can be strengthened because of the rigidity that derives member 230.Thus, the difference of the rigidity between this thermal welding part and the part that is formed with flexible bag 221 of adjacency diminishes, and the variation of the rigidity of the connecting portion G between the 1st inner edge 220i and minor face 220c diminishes.

Therefore, preferably, two interval A on the bearing of trend of minor face 220c that strengthen weld portion 220g, 220h are made as lower with the ratio A/A ' of the size A ' that derives member 230.Thus, the connecting portion G between the 1st inner edge 220i and minor face 220c is near deriving member 230, and the rigidity of flexible bag 221 becomes larger variation can not occur taking this connecting portion G as boundary.This contributes to bend because of the connecting portion G that the flexible bag 221 of effect of external force is difficult between the 1st inner edge 220i and minor face 220c.

And, also consider from the viewpoint of withstand voltage curved property, preferably, two interval A on the bearing of trend of minor face 220c that strengthen weld portion 220g, 220h are particularly 1≤A/A '≤1.6 with the ratio A/A ' of the size A ' that derives member 230.

In addition, between the 1st inner edge 220i and the 2nd inner edge 220j, angulation θ is when more than 180 °, the inside dimension L on the bearing of trend of minor face 220c of flexible bag 221 is two parts of strengthening the 2nd inner edge 220j of weld portion 220g, 220h, identical or shorter than the inside dimension L of the part of the 1st inner edge 220i with the inside dimension L of the part of the 1st inner edge 220i.

This means that strengthening weld portion 220g, 220h than two is to be less than or equal to the inside dimension L that strengthens the part of the 1st inner edge 220i of weld portion 220g, 220h at two by the inside dimension L of flexible bag 221 parts of minor face 220d side.The shape of flexible bag 221 is like this shape poor efficiency and unpractical from the viewpoint of the capacity received of China ink.

Thereby angulation θ is less than the value of 180 ° between the 1st inner edge 220i and the 2nd inner edge 220j.

And preferably, between the 1st inner edge 220i and the 2nd inner edge 220j, angulation θ is particularly 180 ° of 147 °≤θ <.

Comprehensive above each point, by so that two strengthen weld portion 220g, the interval A on the bearing of trend of minor face 220c of 220h and the ratio A/A ' of the size A ' that derives member 230 are 1≤A/A '≤1.6, this is 0 < (A/A ')/B≤0.2 than A/A ' with ratio (A/A ')/B of the size B of the 1st inner edge 220i, and the 1st angulation θ between inner edge 220i and the 2nd inner edge 220j be that the mode of 180 ° of 147 °≤θ < determines each reinforcement weld portion 220g, the shape of 220h, apply external force and be also difficult to produce broken bag even if can form, the flexible bag 221 bending.

The effect of the liquid accommodating container of embodiment, effect

By determine two shapes of strengthening weld portion 220g, 220h in above mode, in the liquid accommodating container 220 of present embodiment, can suppress the broken bag of flexible bag 221, the distortion of bending.

In addition, also can be in the time determining to strengthen the shape of weld portion 220g, 220h, further consider as shown in Figure 4, from the size C till the connecting portion E between inner side to the 2 inner edge 220j and long side 220e, the 220f of the outer peripheral edges that formed by thermal welding of minor face 220c and poor (C-B) between the size B of the 1st inner edge 220i.

At this, poor (C-B) between size C and the size B of the 1st inner edge 220i is the size on the bearing of trend of long side 220e, 220f of the 2nd inner edge 220j.In addition, equal by poor (L-A) between the inside dimension L of the flexible bag 221 of minor face 220d side and the interval A on the bearing of trend of minor face 220c of two reinforcement weld portion 220g, 220h the numerical value that the size composition on the bearing of trend of minor face 220c each reinforcement weld portion 220g, 220h, the 2nd inner edge 220j is added than strengthening weld portion 220g, 220h.

And, two cosine that differ from (tan ((L-A)/(C-B)) for deduct the angle obtaining after angulation θ between the 1st inner edge 220i and the 2nd inner edge 220j from 180 °.Thereby, between difference (C-B) between size C and size B and the 1st inner edge 220i and the 2nd inner edge 220j similarly, can there is the index of bending and being out of shape as the boundary position F that flexible bag 221 is difficult between the 1st inner edge 220i and the 2nd inner edge 220j in angulation θ.

Particularly, by poor (C-B) between size C and size B is made as larger, make the dimension D of the 2nd inner edge 220j elongated, thus, making the angle θ between the 1st inner edge 220i and the 2nd inner edge 220j approach as much as possible 180 °, there is the distortion of bending in the boundary position F that can make flexible bag 221 be difficult between the 1st inner edge 220i and the 2nd inner edge 220j.

The evaluation test of the flexible bag of embodiment

Below, the result of the resistance to broken bag of the liquid accommodating container 220 to present embodiment and the evaluation test of withstand voltage curved property describes.Each evaluation test contains liquid accommodating container 220 in corrugation casing box made of paper (not shown) print cartridge 200 by using carries out.

In addition, in each test print cartridge 200 of using all in flexible bag 221, fill 1000ml liquid as an alternative water and replace China ink.In addition, in each test flexible bag 221 of using all by flexible bag 221 be made as 114mm than strengthening weld portion 220g, 220h by the inside dimension L of the part of minor face 220d side, the size A ' on the bearing of trend of minor face 220c that derives member (export mouth) 230 is made as 34mm.

And, strengthen the size B on the bearing of trend of long side 220e, 220f of the interval A on the bearing of trend of minor face 220c, the 1st inner edge 220i of weld portion 220g, 220h, size C till the connecting portion E between inner side to the 2 inner edge 220j and long side 220e, the 220f of the outer peripheral edges that formed by thermal welding of minor face 220c by two and change to various values and test, use this result to carry out the evaluation of resistance to broken bag and the withstand voltage curved property of liquid accommodating container 220.

The evaluation test of resistance to broken bag

First,, in the evaluation test of resistance to broken bag, carry out the drop test of " 1 jiao of 3 rib 6 face ".This is the test that makes respectively evaluation object thing fall down in 1 angle of evaluation object thing (for example cube), 3 crest lines that stretch out from this angle and cubical each (whole 6 faces), at this, make to fall from the height of 200cm as the print cartridge 200 of evaluation object thing.Then,, in the time falling for each time, confirm whether flexible bag 221 broken bag has occurred.The result of the evaluation test of the resistance to broken bag that the print cartridge of table 1 expression use Fig. 1 carries out.

Table 1

In addition, the result of test, the position of the generation broken bag of flexible bag 221 is all that two of illustrated, minor face 220c strengthen the part that the outer peripheral edges of the direct heat welding flexible film 220a, the 220b that locate between weld portion 220g, 220h form above.

At first, be made as 44mm at the interval A on the bearing of trend of minor face 220c that strengthens weld portion 220g, 220h by two, the size B on the bearing of trend of long side 220e, 220f of the 1st inner edge 220i changed to respectively to 5mm (comparative example 1), 10mm (embodiment 1) and 17mm (embodiment 2～4) tests.

Particularly, be 17mm at the size B of the 1st inner edge 220i, the size C till the connecting portion E between the inner side to the of the outer peripheral edges that formed by thermal welding from minor face 220c 2 inner edge 220j and long side 220e, 220f changed to respectively to 60mm (embodiment 2), 70mm (embodiment 3) and 80mm (embodiment 4) tests.

And, be that 5mm (comparative example 1), broken bag occurs flexible bag 221 at the size B of the 1st inner edge 220i, be 10mm (embodiment 1) at the size B of the 1st inner edge 220i, there is not broken bag in flexible bag 221.

The interval A on the bearing of trend of minor face 220c that the two two of comparative example 1 and embodiment 1 strengthen weld portion 220g, 220h and the ratio A/A ' of size A ' that derives member 230 are all identical values (=1.3).Therefore, in comparative example 1, too short with respect to this size B than A/A ' the 1st inner edge 220i, in the time of the part through the 1st inner edge 220i, the fluid pressure of water is not reduced fully.As a result, the part that larger stress concentrates the outer peripheral edges of direct heat welding flexible film 220a, 220b between two reinforcement weld portion 220g, 220h that put on minor face 220c to form, thus cause flexible bag 221 that broken bag occurs.

In addition, in the case of the size B of the 1st inner edge 220i is increased to 17mm, the size C till the connecting portion E between the inner side to the of the outer peripheral edges that formed by thermal welding from minor face 220c 2 inner edge 220j and long side 220e, 220f is reduced to the 60mm shorter than the 65mm of embodiment 1 (embodiment 2) or is increased to 70mm (embodiment 3), the 80mm (embodiment 4) longer than 65mm.But in above-mentioned various situations, all there is not broken bag in flexible bag 221.

Next, be made as 54mm at the interval A on the bearing of trend of minor face 220c that strengthens weld portion 220g, 220h by two, the size B on the bearing of trend of long side 220e, 220f of the 1st inner edge 220i changed to respectively to 5mm (comparative example 2), 10mm (embodiment 5) and 17mm (embodiment 6～9) tests.

Particularly, be 17mm at the size B of the 1st inner edge 220i, the size C till the connecting portion E between the inner side to the of the outer peripheral edges that formed by thermal welding from minor face 220c 2 inner edge 220j and long side 220e, 220f changed to respectively to 50mm (embodiment 6), 60mm (embodiment 7), 65mm (embodiment 8), 70mm (embodiment 9) and 80mm (comparative example 3) and test.

And, be that 5mm (comparative example 2), broken bag occurs flexible bag 221 at the size B of the 1st inner edge 220i, be 10mm (embodiment 5) at the size B of the 1st inner edge 220i, there is not broken bag in flexible bag 221.

The interval A on the bearing of trend of minor face 220c that the two two of comparative example 2 and embodiment 5 strengthen weld portion 220g, 220h and the ratio A/A ' of size A ' that derives member 230 are all identical values (=1.6).Therefore,, in comparative example 2, with respect to more too short than the size B of A/A ' the 1st inner edge 220i, in the time of the part through the 1st inner edge 220i, the fluid pressure of water is not reduced fully.As a result, the part that larger stress concentrates the outer peripheral edges of direct heat welding flexible film 220a, the 220b between two reinforcement weld portion 220g, the 220h that put on minor face 220c to form, thus cause flexible bag 221 that broken bag occurs.

In addition, in the case of the size B of the 1st inner edge 220i is increased to 17mm, the size C till the connecting portion E between the inner side to the of the outer peripheral edges that formed by thermal welding from minor face 220c 2 inner edge 220j and long side 220e, 220f is reduced to 50mm (embodiment 6) or keeps 60mm (embodiment 7) constant or be increased to 65mm (embodiment 8), 70mm (embodiment 9) or 80mm (comparative example 3).Wherein, except increasing to the comparative example 3 of 80mm, in other embodiment 6～9, in above-mentioned various situations, all there is not broken bag in flexible bag 221.

On the other hand, size C being increased in the comparative example 3 of 80mm, there is broken bag in flexible bag 221.But, in this case, the result increasing as size C, strengthen weld portion 220g, 220h shared area change in flexible bag 221 for two, therefore in the case of the water that is filled with 1000ml, compared with being made as the embodiment 6～9 below 70mm with size C, the filling rate of flexible bag 221 becomes too high, and the resistance to broken bag of flexible bag 221 reduces.

In fact, in the case of the amount that is filled to the water in the flexible bag 221 of comparative example 3 is reduced to the filling rate identical with embodiment 6～9, even if carry out drop test under identical condition, there is not broken bag in flexible bag 221 yet.

Therefore, think that the essential reason that broken bag occurs in comparative example 3 flexible bag 221 is that size C is long, and its reason is not to be two ratio A/A ', size B of the 1st inner edge 220i that strengthen the interval A on the bearing of trend of minor face 220c of weld portion 220g, 220h and derive the size A ' of member 230.

Then, the interval A on the bearing of trend of minor face 220c of two reinforcement weld portion 220g, 220h is being made as 64mm and is being tested.In addition, compared with interval A being made as to the situation of 44mm, 54mm, in the time that interval A is made as to 64mm, uprise than the value of A/A '.In the case of higher than the value of A/A ', according to the tendency of illustrated result of the test, think that the size B of the 1st inner edge 220i is larger above, can be favourable aspect resistance to broken bag.Therefore, be made as 64mm at the interval A that two are strengthened between weld portion 220g, 220h, the size B of the 1st inner edge 220i be made as to the longest 17mm (comparative example 4) and test.

As a result, in comparative example 4, there is broken bag in flexible bag 221.Think that this broken bag is to become too high result than the value of A/A ', broaden and its reason is the direct heat welding flexible film 220a between two reinforcement weld portion 220g, 220h of minor face 220c, the part that the outer peripheral edges of 220b form.That is, think that more water flows into herein under the effect of the impact of falling, larger stress is concentrated and put on herein, thereby cause flexible bag 221 that broken bag occurs.

Known according to the result of the test of above embodiment 1～9 and comparative example 1～4, preferably, be made as 1≤A/A '≤1.6 than A/A ', be made as 0 < (A/A ')/B≤0.2 than A/A ' and ratio (A/A ')/B of the size B of the 1st inner edge 220i.

The evaluation test of withstand voltage curved property

Next,, in the evaluation test of withstand voltage curved property,, print cartridge 200 is fallen by derivation member 230 sides of exposing from the casing box of print cartridge 200 down from the height of 20cm.Then, confirm whether flexible bag 221 press-bending has occurred in the situation that falling for each time.The result of the evaluation test of the withstand voltage curved property that the print cartridge of table 2 expression use Fig. 1 carries out.

Table 2

In addition, the result of test is, except comparative example 8 described later, the position that the generation of flexible bag 221 is bent is on the line of demarcation N of the boundary position F (with reference to Fig. 5 (a)～Fig. 5 (c)) through the 1st inner edge 220i and the 2nd inner edge 220j of each reinforcement weld portion 220g, 220h (with reference to Fig. 4 and Fig. 5 (b)).

At first, be made as 44mm at the interval A on the bearing of trend of minor face 220c that strengthens weld portion 220g, 220h by two, the size B on the bearing of trend of long side 220e, 220f of the 1st inner edge 220i changed to respectively to 5mm (embodiment 10 (with the test model of comparative example 1 identical parameters of resistance to broken bag test)), 10mm (embodiment 11 (with the test model of embodiment 1 identical parameters of resistance to broken bag test)) and 17mm (comparative example 5, embodiment 12～13) tests.

Particularly, 17mm at the size B of the 1st inner edge 220i, by the inner side to the of the outer peripheral edges that formed by thermal welding from minor face 220c 2 inner edge 220j and long side 220e, size C till connecting portion E between 220f changes to respectively 60mm (comparative example 5 (with the test model of embodiment 2 identical parameters of resistance to broken bag test)), 70mm (embodiment 12 (with the test model of embodiment 3 identical parameters of resistance to broken bag test)) and 80mm (embodiment 13 (with the test model of embodiment 4 identical parameters of resistance to broken bag test)) test.

And, be that 17mm and size C are 60mm (comparative example 5) at the size B of the 1st inner edge 220i, flexible bag 221 bends, be 5mm (embodiment 10), 10mm (embodiment 11) and be 17mm and size C be 70mm (embodiment 12), 80mm (embodiment 13) in the situation that at size B at the size B of the 1st inner edge 220i, flexible bag 221 does not bend.

According to this result, think: in comparative example 5, between the 1st inner edge 220i of reinforcement weld portion 220g, 220h and the 2nd inner edge 220j, angulation θ is too small, it is large that the variation in rigidity at the F place, boundary position between the 1st inner edge 220i and the 2nd inner edge 220j of flexible bag 221 becomes, and flexible bag 221 becomes and is easy to, at boundary position F, the distortion of bending occurs.

Next, be made as 54mm at the interval A on the bearing of trend of minor face 220c that strengthens weld portion 220g, 220h by two, the size B on the bearing of trend of long side 220e, 220f of the 1st inner edge 220i is changed to respectively to 5mm, and (embodiment 14 (comparative example 2 of resistance to broken bag test), 10mm (embodiment 15 (with the test model of embodiment 5 identical parameters of resistance to broken bag test)) and 17mm (comparative example 6～7, embodiment 16～18) test.

Particularly, be 17mm at the size B of the 1st inner edge 220i, by the inner side to the of the outer peripheral edges that formed by thermal welding from minor face 220c 2 inner edge 220j and long side 220e, size C till connecting portion E between 220f changes to respectively 50mm (comparative example 6 (with the test model of embodiment 5 identical parameters of resistance to broken bag test)), 60mm (comparative example 7 (with the test model of embodiment 7 identical parameters of resistance to broken bag test)), 65mm (embodiment 16 (with the test model of embodiment 8 identical parameters of resistance to broken bag test)), 70mm (embodiment 17 (with the test model of embodiment 9 identical parameters of resistance to broken bag test)) and 80mm (embodiment 18 (with the test model of comparative example 3 identical parameters of resistance to broken bag test)) test.

And, be that 17mm and size C are 50mm (comparative example 6), 60mm (comparative example 7) at the size B of the 1st inner edge 220i, flexible bag 221 bends, be 5mm (embodiment 14), 10mm (embodiment 15) and be 17mm and size C be 65mm (embodiment 16), 70mm (embodiment 17), 80mm (embodiment 18) in the situation that at size B at the size B of the 1st inner edge 220i, flexible bag 221 does not bend.

According to result, think: in comparative example 6～7, between the 1st inner edge 220i of reinforcement weld portion 220g, 220h and the 2nd inner edge 220j, angulation θ is too small, it is large that the variation in rigidity at the F place, boundary position between the 1st inner edge 220i and the 2nd inner edge 220j of flexible bag 221 becomes, and flexible bag 221 becomes and is easy to, at boundary position F, the distortion of bending occurs.

Next, the interval A on the bearing of trend of minor face 220c of two reinforcement weld portion 220g, 220h is being made as 64mm and is being tested.In addition, according to the tendency of illustrated result of the test, think that between the 1st inner edge 220i that strengthens weld portion 220g, 220h and the 2nd inner edge 220j, angulation θ is larger above, understand favourable aspect withstand voltage curved property.Therefore, be made as 64mm at the interval A that two are strengthened between weld portion 220g, 220h, between the 1st inner edge 220i and the 2nd inner edge 220j, angulation θ is made as in embodiment 10～18 peaked 155 ° (comparative example 8 (test models of comparative example 4 identical parameters of testing with resistance to broken bag)) and tests.

As a result, in comparative example 8, the connecting portion G between the 1st inner edge 220i and minor face 220c flexible bag 221, that respectively strengthen weld portion 220g, 220h bends.Think that the reason of this press-bending is, two interval A on the bearing of trend of minor face 220c that strengthen weld portion 220g, 220h become too high with the value of the ratio A/A ' of the size A ' of derivation member 230, and the direct heat welding flexible film 220a locating between two reinforcement weld portion 220g, 220h of result minor face 220c, the part that the outer peripheral edges of 220b form broaden.

That is, in comparative example 8, than clip derive partially rigid that the outer peripheral edges of member 230 thermal welding flexible film 220a, 220b form low, part that direct heat welding flexible film 220a, the outer peripheral edges of 220b form is more extensively present on minor face 220c.Therefore, think: between the same with it part that the outer peripheral edges of direct heat welding flexible film 220a, the 220b of adjacency form of part of the each reinforcement weld portion of being formed with of minor face 220c 220g, 220h, the rigidity of flexible bag 221 changes significantly, and flexible bag 221 is easy to occur taking the connecting portion G between the 1st inner edge 220i and minor face 220c as boundary the distortion of bending.

Like this, in comparative example 8, although angulation θ between the 1st inner edge 220i and the 2nd inner edge 220j is made as on flexible bag 221 to 155 ° of maximums in the embodiment 10～18 that does not occur to bend, but there is press-bending in connecting portion G between the 1st inner edge 220i and minor face 220c.Therefore, can not be according to getting rid of the Design Mode that between the 1st inner edge 220i and the 2nd inner edge 220j, angulation θ allows this comparative example 8 from each reinforcement weld portion 220g, 220h.

But, according to the result of the test of illustrated above resistance to broken bag, be made as 1≤A/A '≤1.6 by the interval A on the bearing of trend of minor face 220c that strengthens weld portion 220g, 220h by two with the ratio A/A ' of the size A ' that derives member 230, the Design Mode that comparative example 8 (comparative example 4 of resistance to broken bag test) can be allowed from each reinforcement weld portion 220g, 220h is got rid of.

Also according to the result of the test of above embodiment 10～18 and comparative example 5～8, preferably be made as 1≤A/A '≤1.6 than A/A ', in addition, known according to this result of the test, preferably, between the 1st inner edge 220i and the 2nd inner edge 220j, angulation θ is made as 180 ° of 147 °≤θ <.

In addition, be than the reason that is limited to 1 under A/A ': by two interval A on the bearing of trend of minor face 220c that strengthen weld portion 220g, 220h be made as than the size A ' that derives member 230 short textural be impossible.In addition, between the 1st inner edge 220i and the 2nd inner edge 220j angulation θ on be limited to the reason of 180 ° and be: make the 1st inner edge 220i and the 2nd inner edge 220j more approach straight line, the rigidity of the boundary section between the inner side of flexible bag 221 and reinforcement weld portion 220g, 220h becomes higher, more favourable for the withstand voltage curved property of flexible bag 221.

The overall structure of the liquid accommodating container of reference example

In the above-described embodiment, strengthen weld portion 220g, 220h by two of flexible bag 221 and be made as trapezoidal shape, but as shown in the key diagram of Fig. 6, reinforcement weld portion 220k, the 220l that also can change into by the 1st inner edge 220i and the 2nd inner edge 220j are made as to linearity right angle trigonometry shape, be made as flexible bag 221A the structure that has increased black storage capacity.

Particularly, by the inner edge 220m of linearity, the position K that strengthens the two ends of the interval A on the bearing of trend of minor face 220c of weld portion 220k, 220l at a distance of the position J by minor face 220d side of size H and two with the inner side of the outer peripheral edges that formed by thermal welding of the minor face 220c of flexible bag 221A be connected and form each reinforcement weld portion 220k, 220l.In addition, in Fig. 6, omit the diagram of the minor face 220d side of flexible bag 221A.

In the liquid accommodating container 220A of this reference example, by being positioned at connecting portion J's, the long side 220e of flexible bag 221A, 220f and each reinforcement weld portion 220k, angulation θ ' between the inner edge 220m of 220l, strengthen weld portion 220k for two, the interval A on the bearing of trend of minor face 220c of 220l with derive the ratio A/A ' of the size A ' on the bearing of trend of minor face 220c of member 230 and inner edge 220m at long side 220e, size H on the bearing of trend of 220f is set as suitable value, can guarantee resistance to broken bag and the withstand voltage curved property of flexible bag 221A.

The evaluation test of the flexible bag of reference example

Below, the result of the resistance to broken bag of the flexible bag 221A to this reference example and the evaluation test of withstand voltage curved property describes.Use the print cartridge 200 that contains liquid accommodating container 220A in corrugation casing box made of paper (not shown) to carry out each evaluation test.

In addition, in each test, print cartridge 200 of using is all filled the water of the 1000ml of liquid as an alternative and is replaced China ink in flexible bag 221A.In addition, in each test flexible bag 221A of using all by flexible bag 221A be made as 114mm than strengthening weld portion 220k, 220l by the inside dimension L at the part place of minor face 220d side, the size A ' on the bearing of trend of minor face 220c that derives member (export mouth) 230 is made as 34mm.

And, angulation θ ' between the inner edge 220m of the size H on the bearing of trend of long side 220e, 220f, long side 220e, 220f and each reinforcement weld portion 220k, the 220l of the interval A on the bearing of trend of minor face 220c, the inner edge 220m of two reinforcement weld portion 220k, 220l is changed to various values and tests, use this result to carry out the evaluation of resistance to broken bag and the withstand voltage curved property of liquid accommodating container 220A.

The evaluation test of resistance to broken bag and withstand voltage curved property

First,, in the evaluation test of resistance to broken bag, carry out the drop test of " 1 jiao of 3 rib 6 face ".At this, print cartridge 200 is fallen from the height of 200cm.Then,, in the time falling for each time, confirm whether the flexible bag 221A of reference example broken bag has occurred.

In addition, in the evaluation test of resistance to broken bag, make derivation member 230 sides exposed from the casing box of print cartridge 200 down, print cartridge 200 is fallen from the height of 20cm.Then, confirm whether flexible bag 221A press-bending has occurred in the situation that falling for each time.

And table 3 represents to use the result of the evaluation test of resistance to broken bag that the print cartridge of liquid accommodating container with Fig. 6 carries out and withstand voltage curved property.

Table 3

In addition, the result of test is that the position of the generation broken bag of flexible bag 221A is all the connecting portion K (with reference to Fig. 6) between minor face 220c and inner edge 220m.

At first, be made as 39mm at the interval A on the bearing of trend of minor face 220c that strengthens weld portion 220k, 220l by two, the size H on the bearing of trend of long side 220e, 220f of inner edge 220m changed to respectively to 67mm (reference example 1), 72mm (reference example 2) and 90mm (embodiment 3) tests.And in these cases, all both there is not broken bag and do not bent yet in flexible bag 221A.

In addition, be made as 41mm at the interval A on the bearing of trend of minor face 220c that strengthens weld portion 220k, 220l by two, the size H on the bearing of trend of long side 220e, 220f of inner edge 220m be made as to 72mm (reference example 4) and test.As a result, there is not broken bag, press-bending in flexible bag 221A in this case yet.

On the other hand, be made as 39mm at the interval A on the bearing of trend of minor face 220c that strengthens weld portion 220k, 220l by two, when the size H on the bearing of trend of long side 220e, 220f of inner edge 220m is changed to 63mm (comparative example 9), flexible bag 221A bends, but broken bag has occurred.

Think in this comparative example 9, with respect to more too short than the size I of A/A ' inner edge 220m, in the time of the part through inner edge 220m, the fluid pressure of water is not reduced fully.As a result, the part that larger stress concentrates the outer peripheral edges of direct heat welding flexible film 220a, 220b between two reinforcement weld portion 220k, 220l that put on minor face 220c to form, thus cause flexible bag 221A that broken bag occurs.

Next, be made as 44mm at the interval A on the bearing of trend of minor face 220c that strengthens weld portion 220k, 220l by two, the size H on the bearing of trend of long side 220e, 220f of the 1st inner edge 220i changed to respectively to 63mm (comparative example 10), 72mm (comparative example 11) and 81mm (comparative example 12) tests.And the in the situation that of comparative example 10～12, all there is press-bending in flexible bag 221, broken bag has also occurred in comparative example 10.

And, in comparative example 10, with respect to more too short than the size I of A/A ' inner edge 220m, with the reason identical with comparative example 9, thereby cause flexible bag 221A that broken bag occurs.In addition, in comparative example 10～12, becoming too high result than the value of A/A ' is, it is large that the variation in rigidity at the part place of the inner edge 220m of each reinforcement weld portion 220k, the 220l of flexible bag 221A becomes, and flexible bag 221A is easy to, in the part of inner edge 220m, the distortion of bending occurs.

Known according to the result of the test of above reference example 1～4 and comparative example 9～12, preferably be made as 1≤A/A '≤1.2 than A/A ', the size H on the bearing of trend of long side 220e, 220f of inner edge 220m is preferably made as 65≤H (mm of unit), and between long side 220e, 220f and the inner edge 220m of each reinforcement weld portion 220k, 220l, angulation θ ' is preferably made as 153 °≤θ '.

In addition, in the above-described embodiment, illustrate liquid accommodating container of the present utility model has been applied in to the situation in the print cartridge 200 of printing equipment 100, but the utility model also can be applied in container that the liquid make-up of such as shampoo uses etc., applying the print cartridge that liquid accommodating container of the present utility model is not limited to printing equipment, is arbitrarily.

Claims (2)

1. a liquid accommodating container, this liquid accommodating container has the derivation member of flexible bag and tubular, above-mentioned flexible bag is by forming carrying out thermal welding between the outer peripheral edges of a pair of flexible film, above-mentioned derivation member runs through and is provided with the export mouth that the inside and outside connection of this flexible bag is got up, in the front end edge coupling together at the front end by the long side of pair of parallel of above-mentioned flexible bag, between the outer peripheral edges of above-mentioned a pair of flexible film, dispose this derivation member

This liquid accommodating container is characterised in that,

The reinforcement weld portion that between being formed with respectively above-mentioned a pair of flexible film in two bight parts of above-mentioned flexible bag, direct heat welding forms, above-mentioned bight part is using following two parts as both sides, , the outer peripheral edge portion forming between the above-mentioned flexible film of direct heat welding of above-mentioned front end edge, with the above-mentioned front end edge given size of distance in the above-mentioned long side being connected with this outer peripheral edge portion with interior long side part, each above-mentioned reinforcement weld portion has the 1st inner edge to extend abreast from above-mentioned front end edge and above-mentioned long side than the short size of afore mentioned rules size, with the 2nd inner edge that the end of above-mentioned long side part and above-mentioned the 1st inner edge are coupled together,

According to the ratio A/A ' of the size A ' on the bearing of trend of above-mentioned front end edge of the interval A on the bearing of trend of above-mentioned front end edge of two above-mentioned reinforcement weld portion and above-mentioned derivation member, this decides the shape of each above-mentioned reinforcement weld portion than angulation θ between ratio (A/A ')/B of the size B of A/A ' and above-mentioned the 1st inner edge and above-mentioned the 1st inner edge and above-mentioned the 2nd inner edge, wherein, A '≤A.

2. liquid accommodating container according to claim 1, is characterized in that,

Above-mentioned is 1≤A/A '≤1.6 than A/A ', and above-mentioned is 0 < (A/A ')/B≤0.2 than (A/A ')/B, and above-mentioned angle θ is 180 ° of 147 °≤θ <.