JP3485426B2 - Biodegradable drain bag - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biodegradable draining bag installed in triangular corners of a kitchen sink and mesh baskets of drains.

[0002]

2. Description of the Related Art It is preferable to remove wastes such as cooked meals and leftovers produced in a home kitchen, that is, food waste, by removing water as much as possible from the waste. Also, if these wastes are thrown into the drainage and discarded as they are,
Since it causes water pollution, it is desirable that it is not discharged to the drainage port as much as possible. For this reason, a draining bag having a hole for allowing water to go out is used to put kitchen garbage or the like. This drainer bag is attached to the triangular corner of the kitchen sink or the net basket (strainer) provided at the drainage port, and garbage can be put in this bag,
Alternatively, drainage containing cooked debris is poured from the top of this bag to collect the cooked debris in the bag before discharging it to the drain port.

The drain bag is, for example, a bag made of a synthetic resin film such as polyethylene having a large number of small holes for draining, or a bag formed by knitting fibers made of pulp fiber or synthetic resin. There is a bag-shaped non-woven fabric made of pulp fibers. Raw garbage is put in the draining bag and incinerated or landfilled at a refuse disposal site.

However, the amount of garbage discharged from homes and factories has been increasing year by year in recent years, and problems such as air pollution due to incineration and difficulty in securing landfill sites have arisen. There is a growing awareness of such waste treatment problems, and in connection with this, waste is being recycled in order to reduce waste. As a part of these recycling activities, composting of food waste is also actively being undertaken by local governments and companies, and household composters for composting food waste and composting equipment for waste treatment facilities are in practical use. Has been converted.

However, since a synthetic resin film such as polyethylene is not decomposed by microorganisms in the soil, when the garbage is put in a drainage bag made of polyethylene film and placed in a composting device such as a home composter, the bag is Does not decompose, it is difficult for the garbage in the bag to compost, and even if the garbage in the bag is composted, only the draining bag remains without being composted. Even if the landfill treatment is simply performed, the garbage will be returned to the soil, but the draining bag will remain in the soil. Therefore, when composting or burying the garbage collected in this draining bag into the soil, it is necessary to take out the garbage from the draining bag and put it in a home composter, which is very troublesome. It is also unsanitary. Also, a draining bag made of a non-woven fabric made of pulp fibers is decomposed in the soil, but the strength of the non-woven fabric is low, so the bag may be punctured or torn when used in the kitchen etc. There are problems such as.

[0006]

In order to solve the above problems, in the registered utility model publication of utility model registration number No. 3015782, a film made of polyethylene to which biodegradable plastic or photodegradable plastic is added is manufactured. A drainage bag is disclosed. However, just adding biodegradable plastic to polyethylene decomposes the film, but the polyethylene part remains undegraded and polyethylene does not decompose in the soil, so this draining bag is completely biodegradable in soil. It is not possible.

Further, the photodegradable plastic is decomposed by irradiation of light and is not decomposed by microorganisms. Therefore, when the film is put in a home composter or a composting device or buried in the soil, it is difficult to be decomposed because it is hard to receive light, and it takes a long time for the film to be decomposed. Further, even if the film is decomposed as described above, the polyethylene portion remains, so that it is impossible to completely disassemble the drain bag.

Further, Japanese Patent Application Laid-Open No. 8-157002 discloses a rayon nonwoven fabric and a biodegradable resin "NOVON M490".
Although an invention relating to a drainage bag in which films formed from "0" are laminated is described, this biodegradable resin "N
The film formed from "OVON M4900" is inferior in heat resistance, so when boiling water flows into this draining bag, it cannot withstand the temperature of boiling water, causing deformation, perforation, tearing, etc. . Since it is quite possible that the boiling water will be drained during normal cooking work, something that cannot withstand boiling water as described above has a fatal defect as a kitchen drainer bag. .

The present invention is intended to solve the above-mentioned conventional problems, and it is possible to biodegrade food waste and the like generated in a kitchen or the like together with a draining bag and to have sufficient heat resistance to withstand ordinary kitchen drainage. It also has the property of being deformed during use,
(EN) Provided is a draining bag which is attached to a triangular corner of a kitchen sink and a drainage basket which has strength such that it does not puncture or tear.

[0010]

Means for Solving the Problems The present invention is directed to a biodegradable draining bags having many small holes formed by a resin film of a biodegradable resin, the biodegradable resin film <br/> Is a polybutylene succine with a melting point of 100 ° C or higher.
Polyethylene succinate, polybutylene succine
One or more of poly-co-polybutylene adipate
As the main component, the thickness of the resin film is 5 μm or more and 100 μm or less , and the breaking strength is 1.0 kgf / 25 mm.
As described above, the elongation at break is 25% or more .

[0011] The resin film by being thermally fused, which is preferably formed into a bag shape.

[0012]

[0013]

[0014]

[0015]

[0016]

The drainage bag of the present invention is formed mainly of a biodegradable resin having a melting point of 100 ° C. or higher.

Biodegradability refers to the property of being decomposed by microorganisms existing in nature. Examples of such a biodegradable substance include cellulose and starch. Particularly, in the present invention, it is preferable to use an aliphatic polyester which is a thermoplastic biodegradable resin. When a thermoplastic resin is used as the biodegradable resin, for example, a resin film is formed from this biodegradable resin, and when a bag is formed from this resin film, it is easy to form the resin film, and the formed film is By heat-sealing the ends, it becomes easy to form a bag.

Examples of the thermoplastic aliphatic polyester include poly-α-hydroxy acids such as polyglycolic acid and poly-L-lactic acid, poly-β-hydroxybutyric acid,
Poly-β-hydroxyvaleric acid or poly-β-hydroxyalkanoates such as copolymers thereof, poly-β
Examples thereof include poly-ω-hydroxyalkanoates such as propiolactone and poly-ε-caprolactone, polyalkylene dicarboxylates such as polyethylene succinate, polybutylene succinate, polybutylene adipate and copolymers thereof.

The drain bag made of these resins is
It is preferable that the melting point is 100 ° C. or higher so that holes are not punctured or broken by boiling water or the like. Of the above aliphatic polyester resins, the resins having a melting point of 100 ° C. or higher are specifically listed as poly-β-hydroxybutyric acid-c.
Examples include o-β-hydroxyvaleric acid, polybutylene succinate, poly-butylene succinate-co-butylene adipate containing a relatively large amount of butylene adipate components, polyethylene succinate, and poly-L-lactic acid. In order to set the melting point of the draining bag to 100 ° C. or higher, it is preferable to form the draining bag using a resin having a melting point of 100 ° C. or higher as a main material.

Further, in the present invention, the above-mentioned melting point is 100.
Among aliphatic polyethylenes having a temperature of not less than 0 ° C., it is more preferable to use a film having a tensile strength and an elongation not less than a certain value when forming a bag with a resin film formed from this resin. Therefore, polybutylene succinate, polyethylene succinate, poly-
It is preferred to use polyalkylene dicarboxylates such as butylene succinate-co-butylene adipate.

One or more of these resins are used as raw materials to form, for example, a resin film, and the resin film is shaped into a bag to form a drain bag. As a method for forming the resin film, a method generally used when forming a resin film, such as an inflation method, a T-die method, or a melt pressing method, is used. By performing a stretching process on the film formed by such a method,
The thickness and size may be adjusted. When a resin having a low melting point or a resin having a low strength when formed into a film is mixed to form a film, the melting point of the formed film does not fall below 100 ° C. Mix. Further, various additives such as pigments, heat stabilizers, light stabilizers, antioxidants and matting agents may be added within a range that does not significantly impair the heat resistance and biodegradability of the film.

The thickness of the film formed from the biodegradable resin is 5 μm or more and 100 μm or less so that when a drainer bag is manufactured from only one film, the drainer bag has sufficient strength to withstand use. Is preferred.

Further, specifically, the breaking strength of the film is 1.0 kgf / 25 mm or more, more specifically 2.5 k.
gf / 25 mm is desirable, and the breaking elongation of the film is preferably 25% or more, more preferably 50% or more.

However, when a plurality of films are stacked, or when a non-woven fabric, a knitted product, a fiber processed product, or an elastic material such as rubber or urethane is compounded, the thickness may be smaller than the above range, The breaking strength may also be weak.
Further, when an additive is added to the film to soften the film, the film may have a thickness larger than the above range. It is preferable that the composite material also has biodegradability and has a melting point of 100 ° C. or higher.

The film thus formed is formed into a bag shape to form a draining bag. When the film has thermoplasticity, the bag is formed by heat-sealing the ends by heat sealing or the like. It's easy to do. As described above, before or after the film is formed into a bag shape, a perforating process for forming small holes for draining the film is performed. The perforating treatment is a commonly used method such as a method of mechanically treating with a needle or punching, a method of thermally opening with a hot jet or heat embossing, a method of inserting a slit and widening. Done. Further, when forming a film from the biodegradable resin, small holes may be formed.

The drainage well, to hold and fine dust, the size of one per small holes is preferably 100 mm ² or less at 0.1 mm ² or more in one for network basket drain outlet, further It is preferably 0.3 mm ² or more and 30 mm ² or less.

The number of small holes (aperture ratio) is preferably 10% or more and 80% or less, more preferably 20% or more and 70% or less in the area where the holes are formed. The drainage bag having small holes in this range has good drainability and sufficiently high strength. However, the draining bag to be attached to the triangular corner of the sink in the kitchen should have sufficient strength, and it may cause some deterioration of water drainage and dust collection performance. It does not have to be the open area ratio.

[0029]

As described above, since the drainage bag of the present invention is formed mainly of the biodegradable resin having a melting point of 100 ° C. or higher, boiling water or hot water discharged from a pot, kettle or the like is poured. When spilled, the draining bag is not significantly deformed, torn, punctured, or the like, and has sufficient heat resistance for use in a kitchen or the like.

Further, since only the biodegradable resin is used as the material, it is quickly decomposed in the soil or in the compost and does not prevent the composting of the garbage in the bag.

When a drainage bag is formed from a resin film formed of the biodegradable resin, this resin film has a large breaking strength and breaking elongation, so that problems such as tearing and opening of holes during use are avoided. Instead, it has sufficient strength as a drainage bag.

[0033]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. FIG. 1 is a front view showing an embodiment of the drainage bag of the present invention. In the draining bag 1 shown in FIG. 1, the short sides 2a, 2a of a rectangular film 2 are aligned with the palm-sealing state, and the mating surfaces are fused by heat sealing or ultrasonic sealing to form an adhesive joint 3a. After being formed into a tubular shape, the so-called gusset 4 is formed by making the adhesive joint portion 3a the center of the tubular body and making creases at the left and right ends thereof. afterwards,
One long side 2b that is open is fused by heat sealing or the like to form an adhesive joint 3b, which is formed into a bag shape.

The film 2 is formed of a biodegradable resin. In the present invention, it is preferable to use an aliphatic polyester having thermoplasticity as the biodegradable resin. Examples of the thermoplastic aliphatic polyester include poly-α-hydroxy acids such as polyglycolic acid and poly-L-lactic acid, poly-β-hydroxybutyric acid, poly-β-hydroxyvaleric acid and copolymers thereof. Such as poly-β-hydroxyalkanoate, poly-ω-hydroxyalkanoate such as poly-β-propiolactone and poly-ε-caprolactone, polyethylene succinate, polybutylene succinate, polybutylene adipate or their copolyesters. Examples thereof include polyalkyl dicarboxylates such as coalesced products.

Films formed from these resins are
It is preferable that the melting point is 100 ° C. or higher so that holes are not punctured or broken by boiling water or the like. Of the above aliphatic polyester resins, the resins having a melting point of 100 ° C. or higher are specifically listed as poly-β-hydroxybutyric acid-c.
Examples include o-β-hydroxyvaleric acid, polybutylene succinate, poly-butylene succinate-co-butylene adipate containing a relatively large amount of butylene adipate components, polyethylene succinate, and poly-L-lactic acid.

In the present invention, the melting point is 10
Among the aliphatic polyethylene above 0 ℃, from this resin
When molding a bag with the formed resin film,
The film of which the tensile strength and elongation are above a certain level is used. For this reason, it is preferable to use polyalkylene dicarboxylates such as polybutylene succinate, polyethylene succinate, poly-butylene succinate-co-butylene adipate .

The film 2 is one of polyalkylene dicarboxylates such as the polybutylene succinate.
It is formed mainly with one kind or two or more kinds. Alternatively, a copolymer of the polyalkylene dicarboxylate and an aliphatic polyamide may be used, and other aliphatic polyesters described above in the polyalkylene dicarboxylate or raw polyesters other than the aliphatic polyesters such as starch and cellulose. Degradable substances may be mixed to form this mixture as a material. In this case, another resin is mixed in such a range that the formed film does not have a melting point of less than 100 ° C. and has a certain degree of tensile strength and elongation. The film 2 is formed from these materials by a method generally used when forming a resin film, such as an inflation method, a T-die method, and a melt pressing method.

The film 2 has a thickness of 5 μm or more and 10
It is preferably 0 μm or less. Since the film formed in this thickness range has a certain degree of tensile strength and is flexible, the drainage bag formed from this film can be easily attached to the triangular corners and the basket of the drainage port. Further, the breaking strength of the film 2 is preferably 1.0 kgf / 25 mm or more, more specifically 2.5 kgf / 25 mm or more, and the breaking elongation of the film is 25% or more,
Further, it is preferably 50% or more. The drainage bag formed from the film having the above-mentioned breaking strength and breaking elongation is less likely to be torn or punctured during use in a kitchen or the like, and is sufficiently durable for use.

When the water draining bag 1 is manufactured from the film 2 thus formed, a perforating treatment for forming small holes 5 for water draining in the film 2 is performed before or after forming the film into a bag shape. . The perforating treatment is a method of mechanically treating with a needle, punching, etc., a method of thermally opening with a hot jet, heat embossing, etc., and after slitting the film, the film is stretched in the width direction ( Widening), widening the slit to form a hole,
It is carried out by a commonly used method such as. Also,
When forming a film from the biodegradable resin, small holes may be formed in the film in advance.

The size of each small hole is preferably 0.1 mm ² or more and 100 mm ² or less, more preferably 100 mm ² or less for the net basket of the drainage port, because it has good drainability and can collect fine dust. Is 0.3 mm ² or more and 30 mm ² or less. In addition, the number of small holes (aperture ratio) is preferably 10% or more and 80% or less, and more preferably 20% or more and 70% or less in the area where the holes are formed. The drainage bag having small holes in this range has good drainability and sufficiently high strength. However, the draining bag to be attached to the triangular corner of the sink in the kitchen should have sufficient strength, and it may be a little drainage or dust collection performance, so it is not necessary to use the above opening size. It does not have to be the open area ratio.

Draining bag 1 formed from the above film
Is installed in the triangular corners of the kitchen and in the baskets of the drains.
As described above, since the film 2 has a melting point of 100 ° C. or higher, even if boiling water is poured into the draining bag, the bag will not be punctured or broken, and the bag will be excellent in heat resistance and resistant to deformation. Become. Further, since it has high tensile strength and elongation, it is not easily torn or a hole is not opened during use, and it is sufficiently durable for use.

The size suitable for the water draining bag 1 varies depending on the triangular corners in which it is inserted and the size of the drainage basket, but for triangular corners commonly used in homes, H is shown in FIG. The height dimension shown is 20 cm or more and 50 cm or less, preferably 25 cm or more and 35 cm or less, and the width dimension shown by W in FIG.
cm or more and 60 cm or less, more preferably 30 cm or more and 40 cm or less. In addition, for the basket of the drainage port, the height dimension H is 15 cm or more and 50 cm or less, more preferably 20 cm or more and 30 cm or less, and the width dimension W is 1
5 cm or more and 45 cm or less, more preferably 20 cm
It is 30 cm or less in the above.

Further, as shown in FIG. 1, the bag may be formed only by the film 2, but in order to further increase the strength of the bag, a plurality of films may be stacked or the film 2 may be formed.
In addition, a non-woven fabric, a textile product such as a woven fabric, or an elastic material such as rubber or urethane may be compounded. Similar to the film 2, these composite materials also preferably have a melting point of 100 ° C. or higher and a high tensile strength. When using the composite material as described above, the thickness of the film 2 may be thinner than the above range, and the breaking strength may be weak. Further, an additive may be added to the film to make it soft, and in this case, it may be thicker than the above range of thickness.

The draining bag 1 is heat-sealed or ultrasonic-sealed at the adhesive joint portions 3a and 3b, but the adhesive joint portion loses its adhesive strength due to water when used in a kitchen or the like. Since it is sufficient that the bag shape can be maintained without being peeled off when food waste is put in, the adhesive means is not limited to heat fusion by heat sealing or ultrasonic sealing, and a water-insoluble adhesive is applied or a thread is used. The bag may be formed by stitching with. Further, in the drainage bag 1 shown in FIG. 1, the short sides 2a, 2a of the rectangular film 2 are bonded to form a tubular shape, and then one opening (long side 2b) is bonded to form a bag shape. However, a tubular film may be formed by an inflation method, and one opening of the tubular film may be adhered to form a bag. Alternatively, two rectangular films may be superposed so that their sides overlap each other, and their three sides may be bonded to form a bag.

Further, the draining bag shown in FIG. 1 is rectangular, but the draining bag may have any shape as long as it can be securely attached to the triangular corners or the mesh basket of the drainage port. It may be cylindrical, conical, or pyramidal. Further, the gusset 4 may be omitted.

[0046]

EXAMPLES In order to investigate the performance of the drainage bag of the present invention, the drainage bag shown in Examples 1 and 2 below, and Comparative Example 1
And 2 and 4 drainer bags were produced.

Example 1 From a polybutylene succinate resin having a melting point of 116 ° C., a thickness of 4 was obtained by an inflation method.
A 3 μm tubular film was formed. Using a constant speed extension type tensile tester, this film was 150 mm long, 25 mm wide,
When the film was stretched in the MD direction (Machine Direction; extrusion direction of the resin film) of the film at a gripping interval (interval between claws sandwiching the sample side with a tensile tester) at 100 mm and an extension speed of 20 cm / min, the breaking strength was about 5 kgf / Two
A film having a strength of 5 mm and a breaking elongation of about 400% and having sufficient strength to be used as a drainage bag was obtained. A perforation treatment was performed on the entire surface of this film using a needle so that the porosity was 30% and the perforation area was 3.5 mm ² / piece, and the edges of the film were heat-sealed to obtain a drainage bag. This draining bag was put in a basket of the drainage port of the sink and used. As a result, the water was drained well and small dust could be collected without flowing.

Example 2 From a poly-butylene succinate-co-butylene adipate resin having a melting point of 109 ° C. (copolymerization molar ratio; butylene succinate: butylene adipate = 90: 10), a thickness of 45 μm was obtained by a melt extrusion method. Formed a film of. When this film was stretched under the same conditions as in Example 1, the breaking strength was about 7 kgf / 25 m.
m, the breaking elongation was about 55%, and a film having sufficient strength to be molded and used as a drainage bag was obtained. After heat-sealing the ends of this film to form a bag,
Use a needle in the part from the bottom of the bag to the height of 1/4, so that the opening rate is 25% and the opening area is 10 mm ² / piece with respect to the area of the part from the bottom of the bag to the height of 1/4. Opening treatment was performed to obtain a drainage bag. This draining bag was attached to the triangular corner of the sink and used. As a result, the water was drained well, and even smaller dust could be collected without flowing.

Comparative Example 1 A film having a thickness of 42 μm was formed from a poly-ε-caprolactone resin having a melting point of 64 ° C. by a melt extrusion method. The entire surface of this film was subjected to an opening treatment with a needle having an opening ratio of 33% and an opening area of 4.2 mm ² / piece, and the edge portion of the film was heat-sealed to obtain a drainage bag. This draining bag was put in a basket of the drainage port of the sink and used. As a result, as long as water at room temperature (about 20 ° C.) was used, the water was drained well, and even fine garbage could be collected without flowing.

Comparative Example 2 A tubular film having a thickness of 46 μm was formed from the “NOVON M4900” resin containing a low melting point component having a melting point of 60 ° C. by an inflation method. After heat-sealing the ends of this film to form a bag, the area from the bottom of the bag to the height of 1/4 and the area of the part from the bottom of the bag to the height of 1/4 using a needle Then, an opening treatment was performed so that the opening rate was 30% and the opening area was 8.5 mm ² / piece to form a drain bag. This drainer bag was used by putting it in the triangular corner of the sink. as a result,
Similar to Comparative Example 1, as long as normal temperature water was used, there was no problem in drainage and dust collection.

(Comparative Example 3) Among commercially available drainage bags, a polyethylene film drainage bag was used and attached to a triangular corner.

Comparative Example 4 Poly-hydroxybutyric acid-co-hydroxyvaleric acid resin having a melting point of 115 ° C. (copolymerization molar ratio; poly-hydroxybutyric acid: hydroxyvaleric acid resin = 7)
From 6:24), a film having a thickness of 41 μm was formed by the melt extrusion method. When this film was stretched in the same manner as in Example 1, the breaking strength was 0.6 kgf / 25 mm and the breaking elongation was about 5%, which was a very brittle film, and a draining bag could not be formed from this film.

The drainage bags of Examples 1 and 2 and the drainage bags of Comparative Examples 1 to 3 were subjected to the tests shown in (1) and (2) below. (1) Test for Examining Heat Resistance The drainage bags of Example 1 and Comparative Example 1 above were attached to the baskets of the drainage ports of the sink, and the drainage bags of Example 2 and Comparative Examples 2 and 3 were attached to the triangular corners. Then, 800 ml of boiling water (temperature of 100 ° C.) was flown into the draining bag all at once, and it was checked whether or not the shape of each draining bag was changed. The results are shown in Table 1 below. In Table 1, when the shape of the drainage bag is not changed, it is indicated by ⊚, when the shape of the bag is changed but no perforation or tear is generated, it is indicated by ○, and when significant shape change or tear is generated, it is indicated by ×. did.

(2) Test for investigating biodegradability The film forming the drainage bags of the above-mentioned Examples and Comparative Examples was cut into 10 cm squares, and this was embedded in compost adjusted to have a water content of 55 wt% and the temperature was 50 ° C. It was placed under the condition of humidity of 95% and fermented with compost for 6 weeks. Then, the film was dug out from the compost and the shape was confirmed. The results are shown in Table 1. In Table 1, ◎ indicates that the drainage bag did not stay in its original shape and was disassembled to an unrecoverable state, ○ indicates that it was recoverable but the shape collapsed, and × indicates that it was not decomposed in its original shape. did.

[0055]

[Table 1]

As shown in Table 1, it can be seen that the drainage bag of Example 1 does not change its shape by boiling water at 100 ° C. and is excellent in heat resistance. The shape of the drainage bag of Example 2 was changed by boiling water, but no holes or tears were formed. Further, the films used as the materials for the drainage bags of Examples 1 and 2 were almost decomposed in the compost. Therefore, the drainage bags of Examples 1 and 2 have sufficient heat resistance that they can be used as drainage bags for kitchen sinks, and easily decompose in soil or compost, so that the entire bag is buried in soil or compost. However, it does not hinder the composting of food waste in the bag.

On the other hand, the films constituting the drainage bags of Comparative Examples 1 and 2 are biodegradable even when they are buried in the compost, but they are inferior in heat resistance and are not suitable for use in the kitchen or the like. Further, although the drainage bag of Comparative Example 3 has heat resistance,
Since it is hardly decomposed in the compost, it cannot be composted even if it is buried in the soil or in the compost.

[0058]

As described in detail above, the drainage bag of the present invention is formed of a biodegradable resin that can be decomposed by microorganisms in the soil. Therefore, even if you bury the garbage in the soil for each bag, or even put it in the composting device, it decomposes in the soil or in the composting device, without inhibiting the composting of the garbage etc. in the bag, The garbage such as garbage can be treated hygienically and easily, or can be composted. Further, since it has heat resistance to withstand the inflow of hot water, it can be suitably used as a kitchen drainer bag.

When polyalkylene dicarboxylate is used as the biodegradable resin and a film is produced using this as a material, the strength of this film increases, so that it can be used as a drainage bag when used in the kitchen or the like. It does not easily tear or puncture and can be used as a drainage bag.

[Brief description of drawings]

FIG. 1 is a front view of a drainage bag of the present invention,

[Explanation of symbols]

1 drainer bag 2 films 3a, 3b Adhesive joint 4 Gazette 5 small holes

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-6-145283 (JP, A) JP-A-8-157002 (JP, A) JP-A-8-84981 (JP, A) JP-A-8- 3333 (JP, A) JP 9-30601 (JP, A) JP 7-300520 (JP, A) JP 6-220172 (JP, A) Actual flat 6-65302 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65F 1/00 102 B65F 1/00 B01D 29/11 B65D 65/46

Claims (5)

(57) [Claims] 1. A biodegradable draining bag having a large number of small holes formed of a resin film of biodegradable resin,
Resin film of the biodegradable has a melting point above 100 ° C., polybutylene succinate, polyethylene succinate
, Polybutylene succinate-co-polybutylene
One or more of the adipates is the main component, and the thickness of the resin film is 5 μm or more and 100 μm or less , the breaking strength is
Degree is 1.0 kgf / 25 mm or more, Breaking elongation is 25% or less
A biodegradable draining bag characterized by being above . 2. The biodegradable draining bag according to claim 1, which is formed into a bag shape by heat-sealing the resin film. 3. The resin film is polybutylene sac
Cinate, polyethylene succinate, polybutylene
Any of succinate-co-polybutylene adipate
The biodegradable draining bag according to claim 1 or 2, which contains a copolymer of one type and another aliphatic polyamide . 4. The resin film contains other components than the main component.
The biodegradable draining bag according to any one of claims 1 to 3, wherein the aliphatic polyester is mixed . 5. The resin film contains the main component
It is not mixed with cellulose or cellulose.
The biodegradable draining bag according to any one of item 3 above.