WO2003072449A1

WO2003072449A1 - Filter and container using it

Info

Publication number: WO2003072449A1
Application number: PCT/JP2003/002028
Authority: WO
Inventors: Kazutada Sakawa; Hayato Suga; Tetsuo Kaneko
Original assignee: Ssp Co., Ltd.
Priority date: 2002-02-26
Filing date: 2003-02-25
Publication date: 2003-09-04
Also published as: AU2003211658A1; JP2003321030A

Abstract

A filter capable of capturing solid matters efficiently while preventing clogging, and a container fixed with that filter. The filter is provided, at a sieve part for filtering the liquid being filtered, with protrusions projecting to the side of the liquid being filtered and the container is fixed with that filter.

Description

Description Filtration filter and container using the same

The present invention relates to a filter for easily filtering a solution containing solids, agglomerates, coagulates, etc., and in particular, a spout for a plastic bag bottle product used for liquid food, enteral nutrition, etc. Alternatively, the present invention relates to a simple filtration filter which can be easily attached to a spout member connected to a spout of a container body, and a container using the same. Background art

Conventionally, solutions containing solids, agglomerates, coagulates, etc. include teas and juices containing juice and tea juice extracted from tea leaves.We want to remove aggregates of tea leaves and juice contained in these. In some cases, tea and rice cakes have been used. In hospitals, etc., when it is not possible to drink drinks on their own, drinks are given to the containers containing drinks and drinks and contents by using tubes and the like connected by using pour parts.

A simple sieve such as tea shaking can cause clogging if solids, agglomerates, or coagulates cover the surface of the sieve. P Even when giving drinks using drinks or tubes, clogging will occur if there are solids, agglomerates, and coagulates. In addition, enteral nutritional supplements mainly used in hospitals and the like come in various forms such as metal cans, plastic bottles, plastic bags, vouches, and paper containers.To preserve the contents for a long period of time, Sterilization / sterilization may be performed. In addition, various containers have a spout that discharges the contents.Some containers are integrally formed with the container, such as plastic bottles, while others include containers with a spurt or paper containers with spouts. Formed by a separate pouring member There is something to ensure that the contents are poured out well. The sterilization / sterilization treatment includes a method in which the contents are sterilized at a high temperature and then filled in a sterile container, and a method in which the containers are heated and sterilized (retort sterilization) after filling the contents. If the contents contain proteins or other substances that cause thermal denaturation, agglomerates or coagulates may be generated by sterilization / sterilization depending on the content or the presence of other substances. However, in the case of conventional containers, emphasis has been placed on pouring out the contents, and no measures have been taken to prevent this coagulate or coagulate from being discharged. .

The present invention has been made in view of the above-described conventional problems and the actual situation, and has a simple filtration filter that is less likely to be clogged and that can efficiently capture solids and the like. It is an object to provide a container equipped with a filter. Disclosure of the invention

The filtration filter of the present invention is a filtration filter that is attached to an outlet of a container containing a liquid to be filtered or an injection member connected to an outlet of a container body. The above-mentioned object is achieved by protruding the liquid into the liquid to be filtered.

Further, the container of the present invention achieves the above object by attaching the filtration filter to an outlet of the container. It is preferable that a container with a filter attached to a spout is used for a container with a filter attached to a filling portion of the container. Further, the spurt-equipped pouch fitted with the filter of the present invention is suitable when the content is filled with a liquid food, an enteral nutritional supplement or the like.

According to the present invention, by adopting the above configuration, solids, agglomerates, coagulates, and the like can be three-dimensionally captured by the projections and the sieve, and the agglomerates generated after retort sterilization. Since many of them are in the form of a film, the aggregates and the like trapped at the tip of the projection are far from the sieve, so that the sieve itself is less likely to be clogged. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is an explanatory plan view of the filtration filter of the present invention.

FIG. 2 is an enlarged sectional explanatory view taken along line AA of FIG.

The symbols in the figure are as follows.

1: Filtration filter

2: Sieve part

2a: sieve eyes

2 1: Frame

2 1 a: Step of frame

2 2: Grid member

3: Best mode for carrying out the invention

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory plan view of a filtration filter according to the present invention, and FIG. 2 is an enlarged explanatory sectional view taken along line AA of FIG. In both figures, reference numeral 1 denotes a filtration filter, which is composed of a sieve portion 2 and a plurality of protrusions 3. The shape of the simple filter according to the present invention is not limited to the illustrated example. Further, the spouting member connected to the spout of the container body or the spout of the container body and the filtration filter may be formed by integral molding.

The sieve portion 2 is composed of a frame 21 and a lattice member 22 forming a sieve mesh 2a in the frame 21. The shape of the frame body 21 may be circular, square, heart-shaped, or the like. For example, an outer diameter that can be fitted into a spout or a spout of a container (not shown) containing a liquid to be filtered. It is desirable to provide a fitting mechanism in order to prevent it from falling out of the spout and the spouting member, as well as to make it a short cylindrical shape. There is no particular limitation on the method of forming the fitting mechanism. It is convenient to provide the stepped portion 21a. The thickness of the lattice member 22 and the size of the sieve mesh 2a are appropriately selected depending on the liquid to be filtered. However, the lattice member 22 has a maximum cross-sectional length of 0.5 to 1.5. mm, particularly preferably 0.5 to 1.0 mm, and the longest part of the sieve mesh 2a is preferably 3 mm or less, particularly 0.5 to 1.5 mm. The cross-sectional shape of the lattice member 22 may be any shape such as a circle and a square. The shape of the sieve mesh 2a may be any shape such as a grid, a radial shape, a honeycomb shape, or a circular shape, but it is preferable that the size of the mesh is uniform.

The shape of the projection 3 is appropriately selected depending on the liquid to be filtered, regardless of whether it is a cylinder, a square pillar, a square prism, a cone, a triangle cone, a cylinder with a sphere, or the like. The length of the projection 3 is appropriately selected depending on the liquid to be filtered, but is preferably 1 to 5 mm, particularly preferably 1 to 3 mm. The thickness of the projection 3 is also appropriately selected depending on the liquid to be filtered. The longest section of the projection 3 is preferably 0.5 to 2.2 mm, particularly preferably 0.5 to 1.5 mm. The plurality of projections 3 are formed so as to protrude toward the liquid to be filtered, and the spacing between the projections is preferably 1 to 5 mm, particularly preferably equal. The location of the projection 3 is not particularly limited as long as it is on the sieve 2, but the intersection of the lattice members 22 is desirable. The method of forming the projections 3 does not matter in any way, but an integrally formed body with the sieve portion 2 is desirable in terms of strength.

The material of the sieve portion 2 and the projections 3 is not limited, but for example, metals such as iron, aluminum, titanium, and copper, and plastics such as polypropylene, polyethylene, polyethylene terephthalate, and ABS resin are preferable. Used.

The container to which the filtration filter 1 of the present invention is applied includes, for example, a patch with a spat (not shown). A spout with a spout is a container in which a container body is mainly made of a plastic film or the like, and a spout as an ejection member is welded to the bouch.

This spouted spatula is filled with liquid food, enteral nutrition, etc. Is a voucher that administers nutrients directly into the human digestive tract through the tract. The spout with a spout in this case has a hanging hole, and is used by being hung using the hole. When the filter 1 is attached to the spout with a spout, the aggregates are captured by the projections 3 and the sieve 2, and it is possible to prevent the aggregates at the spout and the clogging of catheters, tubes, etc. Become.

When applying the filtration filter 1 to a spout with a spurt, the filtration filter 1 is attached to the spout so that the projection 3 protrudes toward the liquid to be filtered, that is, inside the container. Various mounting methods such as inner fitting, outer fitting, and screw fitting are possible. As a material of a filter used for the spout with a spout, polypropylene or the like is preferable.

Further, the filtration filter 1 and the spat may be formed by integral molding. In this case, although there are restrictions on the shapes of the filter and the spat due to the design of the mold, the cost can be reduced due to the reduction in the number of parts and the number of processes.

The structure of the spurt includes a boat-shaped base that is welded to the film of the bouch, an injection cylinder that extends outward from the center of the base, and has a thread on the outer peripheral surface. A seal member that is heat-welded to the surface, a cap that is threadedly engaged with the thread on the outer peripheral surface of the dispensing cylinder, and a cap that is provided on the inner surface of the cap and that comes into liquid-tight contact with the top surface of the dispensing cylinder. And a contact ring. As a material of this spurt, polypropylene or the like is preferable.

As the main body of the patch, a self-supporting standing which is made by heat welding a pair of side wall films and a bottom film as the bottom of the patch, which is made by heat welding four sides of a pair of films as the side walls of a flexible patch And a bouch.

Further, as an example of the vouch body to be filled with a liquid food, an enteral nutritional supplement, or the like, a part of the bouch body having a rectangular shape, for example, a spat is provided at an inclined portion of a rectangular corner, and the spat faces downward. The suspension holes for suspending Provided configuration.

The material of the bouch is appropriately selected according to the type of the contents, such as a barrier film (silica vapor-deposited film, aluminum laminate film, etc.), nylon, and polypropylene. In particular, from the viewpoint of the transparency of the contents, a metal oxide thin film is preferable as the barrier uniform film, and the specific layer structure is a metal oxide vapor-deposited polyethylene terephthalate layer, a biaxially stretched nylon film, and polypropylene. A laminated film in which a film is laminated is preferable.

The container equipped with the filtration filter 1 of the present invention is not limited to a voucher with a spout, and may include other containers such as a metal container, a plastic bottle, a plastic bag, a tube container, and a paper container. It is applicable to any container that has it.

For example, in the case of a plastic bottle, there is a plastic bottle made of polyethylene terephthalate, polypropylene, or the like, and a filter may be attached to these mouths.

Next, the present invention will be further described with reference to test examples.

Test example 1

After fitting each filter of the following specifications shown in Figs. 1 and 2 into the pouring member connected to the drip tube, the solution to be filtered (the following enteral nutrient is sterilized by retort, and the aggregates due to heat denaturation are removed. Connect the spout and the spout member of a container (bouch with spat) filled with 40 OmL of the prepared solution), hang it with the spout downward, and transfer the contents through the drip tube to the receiver. Was dropped. After completion of the dropping, the filtration filter was removed from the pouring member, and the state of capture of the aggregates and the like at the projections was visually observed, and the state of the aggregates and the like in the dropping liquid in the receiver was visually observed. In addition, the amount of dripping every time until the end of the dripping was measured. The results are shown in Table 1.

* Standard for filtration filter ① Shape of projection: cylindrical

②Length of protrusion: As shown in Table 1 (In Table 1, 0 mm indicates that no protrusion was formed

③ Thickness of protrusion: longest section lmm

間隔 Spacing between projections: 3 mm between neighbors

⑤Frame shape: circular

横 Cross section shape of lattice member: square

⑦ Grid member thickness: 1 mm square

目の Eye size of sieve: longest part 1.5 mm

* Composition of enteral nutrition

Soy protein

Processed skim milk 4 g

2 g

Dextrin 10 g

4 g sugar

2 g vegetable oil

2 g of dietary fiber

Sodium ascorbate 50 mg

Sodium chloride 5 mg

Calcium dalconate 50 mg

Potassium chloride 75 mg

Fragrance 30 Omg

water .

0 OmL total table 1

In Table 1, the state of capture of the projections, the state of capture of the sieve, the state of remaining aggregates and the like in the dripping liquid, and the state of dripping were determined according to the following evaluation.

(1) State of capture of protrusion

A: Aggregates and the like were favorably captured.

〇: Aggregates were added.

Δ: Aggregates and the like were slightly supplemented.

(2) Sieve collection status

：: Sufficiently supplemented aggregates, etc., and no clogging was observed.

〇: Supplemented aggregates and no clogging.

C: Clogging was sometimes caused by supplementing aggregates and the like.

X: clogging was caused by supplementing aggregates and the like.

(3) Residual state of aggregates etc. in the dripping liquid

：: No aggregates or the like remained at all.

〇: Aggregates and the like hardly remained.

Δ: Aggregates and the like were slightly left.

(4) State of dripping

：: The amount of dripping every hour was constant, and it was possible to drop well.

〇: The amount of dripping per hour was almost constant and dripping was possible.

Δ: The amount of dropping per hour was not constant, and the dropping time was prolonged.

X: Clogging occurred and dripping was completed.

As is evident from Table 1, the length of the protrusion is l ~ 5 mm, especially l ~ 3 mm However, clogging is less likely to occur and is the most efficient for efficient filtration.

Test example 2

The test was conducted in the same manner as in Test Example 1 except that a filtration filter in which the distance between the projections was changed to that shown in Table 2 was used. The length of each projection was 2 mm. Table 2 shows the results.

Table 2

As is evident from Table 2, the spacing between the projections is 1 to 5 mm, which is the most effective for efficient filtration because it hardly causes clogging.

Test example 3

The test was performed in the same manner as in Test Example 1 except that a filtration filter in which the thickness of the projection (the longest section) was changed to that shown in Table 3 was used. The length of each projection was 2 mm. Table 3 shows the results.

Table 3

As is evident from Table 3, the longest cross section of the protrusion is 1 to 2.2 mm, especially 0.5 to 1.5 mm, which is less likely to cause clogging and is effective for efficient filtration. Most effective. Industrial applicability

When the filtration filter container of the present invention is used, the interaction between the projection and the sieve portion Thus, solids, aggregates, coagulates, etc. can be captured three-dimensionally. In other words, the projections located in front of the sieve capture solids, agglomerates, coagulates, etc., and filter the liquid to be filtered that has passed through the projections at the sieve. Clogging hardly occurs, and the liquid to be filtered can be effectively filtered.

Claims

The scope of the claims

1. At the filtration port used to be attached to the spout of the container body containing the liquid to be filtered or the spouting member connected to the spout of the container body, a projection is provided on the sieve for filtering the liquid to be filtered. A filtration filter characterized by being formed so as to protrude toward the liquid to be filtered.

2. The filtration filter according to claim 1, wherein the projection provided on the filtration filter has a pointed tip.

3. The filter according to claim 1, wherein the projection has a length of 1 to 5 mm.

4. The filtration filter according to any one of claims 1 to 3, wherein an interval between the projections is 1 to 5 mm.

5. The filter according to any one of claims 1 to 4, wherein the projection has a thickness of 0.5 to 2.2 mm at the longest section thereof.

6. A container, characterized in that the filtration filter according to any one of claims 1 to 5 is attached to an outlet of the container.

7. The container according to claim 6, wherein the container is a spout-equipped bouch, and the filter is attached to the spout.

8. The container according to claim 7, wherein the filter and the spat are integrally formed.

9. The container according to any one of claims 6 to 8, wherein the content contained in the container is a liquid food or an enteral nutritional supplement.