JP4195912B2 - Odorable waste sealing substrate and odorous waste sealing method - Google Patents

Description

  The present invention relates to a base material and a method for sealing used diapers and other odorous waste.

  Disposable diapers are used for babies, physically disabled people, elderly people requiring care in general households, hospitals, nursing care welfare facilities, etc., and the number of their use has increased with the remarkable increase in the number of elderly people requiring nursing care in recent years. It has increased.

  Normally used diapers are put in a plastic bag such as a supermarket bag and put in a mouth, and are stored in a garbage bag or a trash box until the date of garbage collection. Therefore, a bad odor may be generated from the stored used diaper to the garbage collection date, which is uncomfortable.

  Therefore, it has been proposed to put a used diaper into a series of continuous bags and to isolate each diaper from the outside by twisting the bag each time one is inserted (for example, Patent Document 1).

However, just twisting the bag with the used diaper may leak odor to the outside of the bag, and when transferring to a garbage bag for collecting garbage, the bag will be untwisted and the odor will leak. There was a problem. This problem is not limited to used diapers, but can be a common problem that can occur when pet droppings and garbage are stored until the date of garbage collection, and when various other odorous wastes are stored for a certain period of time. It is.
JP 2000-247401 A

  Therefore, the present invention is an odorous waste that can be stored without almost any unpleasant odor drifting for a certain period of time until the used diaper, pet feces, garbage or other odorous waste is discarded. The sealing base material and its sealing method are intended to be provided.

In order to solve the above problems, the present invention takes the following technical means.
(1) The sealing substrate of the odorous waste according to the present invention includes a covering base and an adhesive layer formed on the covering base, and includes the covering base and the adhesive layer. It has a gas barrier property and is characterized in that odorous waste is wrapped in a covering substrate and sealed with the adhesive layer.

  As the covering substrate, a plastic film, a plastic sheet, paper, a paper laminated with a plastic film, a paper impregnated with a synthetic resin, or the like can be used.

  The sealing substrate for odorous waste is an adhesive layer formed on the wrapping substrate by wrapping the odorous waste such as used diapers in a wrapping substrate when storing it until the date of garbage collection. Therefore, it is possible to form a gas barrier state in which the odorous waste is sealed and the odor does not leak to the outside.

  Here, if the entire surface of the covering base material is adhered, even if a hole is formed in a part, only the odor in the vicinity of the part leaks. Moreover, the gas barrier property by the covering base material and the adhesive layer can be such that the covering base material itself has a gas barrier property, and the adhesive layer can have a gas barrier property. A gas barrier property can also be obtained by a synergistic action with the adhesive layer. Further, as the adhesive layer, an adhesive layer having a slightly sticky touch at room temperature can be used.

(2) Moreover, the sealing base material of odorous waste of this invention comprises the covering base material and the adhesive layer formed on the covering base material, and the covering base material and the adhesive layer. It has a gas barrier property, and is characterized in that odorous waste is wrapped in a covering substrate and sealed with the adhesive layer.

  The sealing substrate for odorous waste is an adhesive layer formed on the covering substrate by wrapping the odorizing waste such as used diapers in the covering substrate when storing it until the date of garbage collection. Therefore, it is possible to form a gas barrier state in which the odorous waste is sealed and the odor does not leak to the outside.

  Here, the gas barrier property due to the covering substrate and the adhesive layer can be that the covering substrate itself has gas barrier property, the adhesive layer can have gas barrier property, and the covering base. A gas barrier property can also be obtained by the synergistic action of the material and the adhesive layer.

(3) The covering substrate may include a release agent layer.
If comprised in this way, when the sealing base material of the said odorous waste is wound in roll shape, when a plurality of sheets are deposited in the mat shape, etc., the said sealing base materials will adhere too firmly. It can be made to peel easily by suppressing this.

(4) The breaking strength of the covering substrate may be set to about 15 to 200 N / 15 mm. When such a breaking strength is set, it is difficult to break even if an external force is applied when the odorous waste is wrapped.

(5) The 5% modulus of the covering substrate may be set to about 5 to 100 N / 15 mm. When such a 5% modulus is set, the sealing bases are not too strong, and the sealing bases are easily adhered to each other flexibly so that the odorous waste can be sealed more effectively. .

(6) A deodorant or / and a deodorant or / and a deodorant or / and a fragrance or / and an antibacterial agent may be added to at least one of the covering substrate and the adhesive layer or the adhesive layer. . If comprised in this way, a deodorizing effect and a deodorizing effect can be improved more, and an antimicrobial effect can be given. The deodorant, deodorant, deodorant, fragrance, and antibacterial agent can be applied by kneading or coating.

(7) The adhesive layer or the pressure-sensitive adhesive layer may be made of a polyurethane resin, and the softening point may be 70 ° C. or higher and lower than 125 ° C.

  When configured in this manner, the adhesive layer having the above-described configuration has a degree of adhesion that is not too weak and not too weak without being treated with a release agent. The pressure-sensitive adhesive layer does not excessively adhere to the surface not subjected to the mold release treatment, and can be smoothly unwound from the roll without applying too much force. That is, no release agent treatment is required for the opposite surface of the adhesive layer. In addition, the adhesive layer itself is less sticky at room temperature, and it is difficult to stick to the hand or the like when handling.

  Here, if the stickiness at normal temperature is excessively reduced (the upper limit of the softening point range is excessively increased), there arises a problem that the adhesive force between the adhesive layers is lost. That is, by setting the softening point of the pressure-sensitive adhesive layer to 70 ° C. or higher and lower than 125 ° C., the adhesive force on the surface of the pressure-sensitive adhesive layer that has not been subjected to the release agent treatment is just good and the stickiness at normal temperature Although it has the advantage that there is little, the advantage (adhesive strength between the adhesive layers) is sufficient with this advantage (excellent adhesion strength at the time of sealing, and odorous substances are fermented and suppressed from the top Odor is extremely difficult to leak even if it is applied).

  As the polyurethane resin, a polyester resin or a polyether resin can be used.

(8) The sealing method of the odorous waste according to the present invention uses the sealing substrate of the odorous waste, wraps the odorous waste in a covering substrate, and the adhesive layer or the pressure-sensitive adhesive layer It is characterized by being sealed by.

  The sealing method of this odorous waste is to wrap the odorous waste such as used diapers in a covering substrate when storing it until the date of garbage collection, and the adhesive layer formed on the covering substrate or Since the adhesive layer is used for sealing, the periphery of the odorous waste can be sealed to provide a gas barrier state in which odor does not leak outside.

FIG. 1 is a perspective view showing a state where odorous waste is sealed with a odorous waste sealing substrate according to Embodiment 1 of the present invention.
FIG. 2 is a cross-sectional view of the sealing substrate of the odorous waste of FIG.
FIG. 3 is a cross-sectional view illustrating another embodiment of the sealing substrate for odorous waste of FIG.
FIG. 4 is a perspective view showing a state where the sealing substrate of odorous waste of FIG. 1 is used as a roll-shaped sealing substrate.
FIG. 5 is a perspective view showing another usage pattern of the sealing substrate of the odorous waste of FIG.
FIG. 6 is a perspective view of a sealing substrate for odorous waste according to Embodiment 2 of the present invention.
FIG. 7 is a side view of a sealing substrate for odorous waste according to Embodiment 3 of the present invention.
FIG. 8 illustrates a thermomechanical analyzer.
FIG. 9 is a diagram for explaining a penetration mode of the thermomechanical analyzer.

Embodiments of the present invention will be described below with reference to the drawings.
(Embodiment 1)
As shown in FIGS. 1 to 4, the sealing substrate 1 of odorous waste of this embodiment is formed by forming an encapsulating substrate 10 with a transparent unstretched polypropylene film, and a rubber system on one side thereof. The adhesive layer (adhesive layer) 11 is laminated and integrated. The pressure-sensitive adhesive layer (adhesive layer) 11 is formed so as to cover the entire surface of the covering base material 10, but the pressure-sensitive adhesive layer 11 is formed only at a peripheral portion of the sealing base material 1 having a size to be used at a time. May be.

  In addition to the unstretched polypropylene, the material of the covering substrate 10 is low density polyethylene, high density polyethylene, unstretched polypropylene, stretched polypropylene, stretched nylon, polyester, normal cellophane, moisture-proof cellophane, vinylidene chloride, vinylidene chloride coated cellophane, Vinylidene chloride-coated stretched polypropylene, vinylon, ethylene vinyl alcohol copolymer, and stretched vinylon can also be used. Here, if low density polyethylene and unstretched polypropylene are used, the price can be reduced, the pasting workability at the time of use is good, and no toxic combustion gas etc. is generated even when incineration is finally performed. This is preferable.

  Moreover, although the thickness of the said covering base material 10 was set to 40 micrometers, it was able to implement suitably with the film of about 12 micrometers-1 mm, and about 1 mm or more sheet | seat. The adhesive layer 11 is a rubber type having a thickness of about 10 μm, but may be an acrylic type adhesive.

  As shown in FIG. 2, the covering substrate 10 has a single layer structure, but may have a multilayer structure as shown in FIG. As shown in FIG. 3, when the release agent layer 12 is formed on the other surface of the covering substrate 10, the sealing substrates 1 can be easily separated from each other. The release agent layer 12 can be made of, for example, a silicone-based material or a non-silicone-based material.

  The foreskin base material 10 is set to have a breaking strength of 32 N / 15 mm, and is difficult to break even when an external force is applied when enveloping the odorous waste, and even if a hole is opened, the adhesive layer 11 Since the two are attached to each other, the hole is difficult to expand, and the used diaper 2 can be prevented from being exposed to the outside air. The breaking strength of the foreskin base material 10 is preferably set to about 15 to 200 N / 15 mm in order to suitably impart the above characteristics. Further, the 5% modulus of the foreskin base material 10 is set to 16 N / 15 mm, but when this is set to about 5 to 100 N / 15 mm, the sealing base materials 1 are not too strong and the sealing base materials are not too strong. Since it is easy to adhere flexibly, it was possible to seal the odorous waste more effectively.

  In addition, if a deodorant or / and a deodorant or / and a deodorant or / and a fragrance or / and an antibacterial agent are kneaded into at least one of the covering substrate 10 and the adhesive layer 11, a deodorizing effect and a deodorant are obtained. An effect can be heightened more and an antimicrobial effect can be given.

  Next, the usage state of the sealing substrate of the odorous waste of this embodiment will be described.

  As shown in FIG. 4, the sealing substrate 1 is wound in a roll shape with the adhesive layer 11 inside, and accommodated in an outer box 3 a having an opening lead-out portion 30. The outer box 3a is prevented from jumping out of the outer box 3a when the sealing base material 1 is pulled out by folding both end surfaces inward. Then, the user pulls out the roll-shaped sealing substrate 1 to a necessary length and cuts it out with the saw-tooth 4 provided on the outer side of the outer box 3a.

  The sealing substrate 1 itself may be previously perforated so that it can be easily cut by hand. Moreover, although the said sealing base material 1 made the adhesion layer 11 inside when winding in roll shape, you may make it outside. In this case, if the release paper is applied to the inner surface of the outer box 3a or the release agent is applied, the adhesive layer 11 of the sealing substrate 1 housed inside is fixed to the inner surface of the outer box 3a. Can be prevented.

  Then, as shown in FIG. 1, the used diaper 2 is placed on the adhesive layer 11 of the sealing substrate 1 and wrapped and sealed with the adhesive layer 11. Then, the surroundings of the used diaper 2 are in a gas barrier state, and the odor of the used diaper 2 hardly drifts out.

  As shown in FIG. 5, the sealing base material 1 is cut out, the used diaper 2 is placed in the middle of the adhesive layer 11, and another sealing base material 1 is further cut out to form the adhesive layer 11. The diaper 2 may be wrapped and wrapped down after use.

  Thus, the method of using the roll-shaped sealing substrate 1 is very simple and compact in shape, and is particularly convenient when used in general homes.

(Embodiment 2)
The sealing substrate 1 of odorous waste of this embodiment has the same structure as that of the first embodiment, and is cut into an appropriate size in advance as shown in FIG. A plurality of mats are stacked and accommodated in an outer box 3b having a lid.

  The user first peels off the laminated sealing base material 1, places the used diaper 2 on the adhesive layer 11 of the sealing base material 1, wraps it, and seals it with the adhesive layer 11. Then, the surroundings of the used diaper 2 are in a gas barrier state, and the odor of the used diaper 2 hardly drifts out.

  Since the sealing substrate 1 is housed in an outer box 3b having a lid, the adhesive layer 11 is protected from dust and the like, and the user takes out the outer box after taking out the sealing substrate 1 to be used. It is also possible to close the lid of 3b and work on it. Here, if a release paper is applied to the inner side of the outer box 3b or a release agent is applied, the adhesive layer 11 can be attached to the outer side without covering the sealing substrate 1 housed inside with a cover film or the like. It can be prevented from sticking to the inside of the box 3b and is convenient.

(Embodiment 3)
The sealing substrate 1 of odorous waste according to this embodiment has the same structure as that of the first embodiment, and the adhesive layer of a pair of sealing substrates 1 wound in a roll shape as shown in FIG. The pressure-sensitive adhesive layers 11 are adhered to each other by being drawn out so as to form a substantially V-shape with the inside 11 being pressed, and being pressed from the outside with a sponge roller 5. The sponge roller 5 is rotationally driven by a known motor (not shown).

  The user supplies the used diaper 2 or the like to the inside of the pair of sealing substrates 1 arranged in a V shape and rotates the sponge roller 5. Then, while the used diaper 2 and the like are compressed by the sponge roller 5, the pair of sealing base materials 1 are fixed to each other, the used diaper 2 is sealed by the sealing base material 1, and the used diaper 2 There is almost no odor drifting around the gas barrier.

  Thus, since the sealing base material 1 is pressed and adhered by the sponge roller 5, a large number can be processed in a short time, especially when used for business purposes such as hospitals and care welfare facilities. convenient.

  An evaluation test on bad odor leakage was performed as follows.

  A waste containing 1 mL of a 2.5% aqueous ammonia solution was used as a bad odor source, which was sealed with a sealing substrate of odorous waste, and sealed in a polyethylene bag. The polyethylene bag used was a general one that can be sealed by hand.

  The ammonia gas concentration in the polyethylene bag immediately after the waste impregnated with the aqueous ammonia solution was sealed with a sealing substrate and sealed was measured. The polyethylene bag was then allowed to stand at room temperature, and the ammonia gas concentration in the polyethylene bag after 1 day, 2 days, and 4 days was measured.

  A gas-tech detector manufactured by Gastec Co., Ltd. was used for measuring the ammonia gas concentration, and a Kitagawa-type gas detector tube manufactured by Komyo Chemical Co., Ltd. was used as the detector tube. The sealing base material used here is as follows.

(1) A sealing base material in which a rubber-based adhesive layer (thickness 10 μm) is laminated and integrated on one side of an enveloping base material (thickness 40 μm) made of an unstretched polypropylene (CPP) film.

(2) A sealing substrate in which a rubber-based adhesive layer (thickness 10 μm) is laminated and integrated on one surface of an enveloping substrate (thickness 55 μm) made of a polyethylene (PE) film.

(3) A sealing base material in which a rubber-based adhesive layer (thickness 10 μm) is laminated and integrated on one surface of a covering base material (thickness 25 μm) made of a polyester (PET) film.

  The value of the ammonia gas concentration in the polyethylene bag when a waste containing 1 mL of 2.5% ammonia aqueous solution was directly put in the polyethylene bag was taken as a blank value. The results of the evaluation test are shown in Table 1.

  As shown in Table 1, the ammonia gas concentration is 260 ppm or more in the blank value immediately after sealing, whereas the sealing substrates (1), (2), and (3) of the odorous waste are all 0 ppm. there were. One day later, the ammonia gas concentration was 60 ppm in the blank value, whereas the sealing substrates (1), (2), and (3) were 0 to 2 ppm, 1 to 2 ppm, and 0 to 1 ppm, respectively. Two days later, the ammonia gas concentration was 40 ppm in the blank value, whereas the sealing substrates (1), (2), and (3) were 1 to 4 ppm, 2 to 4 ppm, and 0 to 2 ppm, respectively. After 4 days, the ammonia gas concentration was 10 ppm or less in the blank value, whereas the sealing substrates (1), (2), and (3) were 2 to 4 ppm, 4 to 6 ppm, and 1 to 3 ppm, respectively.

  That is, the sealing substrate (1), (2) and (3) of the odorous waste of the example can suitably seal the waste containing ammonia gas, and the odor hardly floats. I was able to.

  In order to evaluate the adhesive force between the surfaces on which the adhesive layers were formed, a T-type peel test was performed using the following test films 1 to 5. The contents are shown in Table 2.

(1) Test film 1 (shown with a circle in the table, the same applies hereinafter)
An adhesive layer (thickness 5 μm) made of a polyester-based polyurethane resin (trade name Samprene IB-129, manufactured by Sanyo Chemical Co., Ltd.) is laminated on one side of a covering substrate (thickness 40 μm) made of an unstretched polypropylene (CPP) film. Integrated sealing substrate. The softening point of the adhesive layer is 80 ° C. (manufacturer published value).

  Here, the “softening point” of the adhesive layer was measured using a thermo-mechanical analyzer (model name TMA2940) manufactured by TA Instruments (based on JIS-K7196). The TMA is based on a thermal analysis method for measuring a shape change accompanying a temperature change of a sample under a non-vibrating load. As shown in FIG. 8, the sample temperature is changed in the heating furnace 54 while applying a load to the sample 53 from the load generating unit 51 via the probe 52. When the sample 53 is softened in response to the temperature change, the displacement amount associated with the deformation is measured by the position detection unit 55 as the position change amount of the probe 52. TMA has several modes depending on how the load is applied and the shape of the probe. As shown in FIG. 9, in the needle insertion mode (needle entry method, temperature rising temperature 5 ° C./min), the needle 52 is thin at the tip of the probe 52 (diameter 2.9 mm in diameter) for the expansion / compression mode. In this method, a protrusion 56 is provided, a load is applied locally, and the softening point of the sample 53 is measured. Specifically, the measurement was performed at a pressure of 0.1 N and a diameter of the probe needle-like thin projection 56 of 0.89 mm. Then, the measured value of the softening point was 80.5 ° C.

(2) Test film 2
An adhesive layer (thickness 5 μm) made of a polyester polyurethane resin (trade name Samprene IB-422, manufactured by Sanyo Chemical Co., Ltd.) is laminated on one side of a covering base material (thickness 40 μm) made of an unstretched polypropylene (CPP) film. Integrated sealing substrate. The softening point of the adhesive layer is 90 ° C. (manufacturer published value). The actual value of the softening point measured as in (1) was 75 ° C.

(3) Test film 3
An adhesive layer (thickness: 5 μm) made of a polyether-based polyurethane resin (manufactured by Sanyo Chemical Co., Ltd., trade name Samprene IB-300) is provided on one side of an enveloping substrate (thickness: 40 μm) made of an unstretched polypropylene (CPP) film. An integrated sealing substrate. The softening point of the adhesive layer is 90 ° C. (manufacturer published value). The actual value of the softening point measured as described in (1) was 90 ° C.

(4) Test film 4
An adhesive layer (thickness 5 μm) made of a polyether-based polyurethane resin (manufactured by Sanyo Chemical Co., Ltd., trade name Samprene IB-465) is provided on one side of an enveloping substrate (thickness 40 μm) made of an unstretched polypropylene (CPP) film. An integrated sealing substrate. The softening point of the adhesive layer is 120 ° C. (manufacturer published value). The actual value of the softening point measured as in (1) was 125 ° C.

(5) Test film 5
An adhesive layer (thickness 5 μm) made of a synthetic rubber-based resin (trade name G-5312, manufactured by No-Tape Kogyo Co., Ltd.) is laminated and integrated on one side of a covering base material (thickness 40 μm) made of an unstretched polypropylene (CPP) film. Encapsulated sealing substrate.

  And the T-type peeling test was done by the following method.

  Test films 1 to 5 were cut into a size of 25 mm wide × 200 mm long. The two cut test films were laminated with the surfaces on which the adhesive layers were formed facing each other, and 300 mm / min. 1 reciprocation at a speed of Then, the test film 4 (the softening point of the adhesive layer made of polyurethane resin is 120 ° C. [measured value 125 ° C.]) tends to be difficult to stick. After leaving for 20 to 40 minutes, each of the bonded test films 1, 2, 3, and 5 is fixed to a gripping tool of a tensile tester (manufactured by Shimadzu Corporation, trade name Autograph AGS-G), and the peeling speed 300 mm / nin. Peeled off. The numerical value of the peeling force at that time was measured. The test results are shown in Table 3.

  As shown in Table 3, the peel resistance (adhesive force) of test film 1 (the softening point of the adhesive layer made of polyurethane resin is 80 ° C. [actual measurement value 80.5 ° C.]) is 4.00 N / 25 mm, test film 2 (The softening point of the adhesive layer is 90 ° C. [measured value 75 ° C.]) The peel resistance (adhesive force) is 6.00 N / 25 mm, and the test film 3 (the softening point of the adhesive layer is 90 ° C. [measured value 90 ° C.] ]) Peel resistance (adhesive force) was 5.00 N / 25 mm, and test film 5 (adhesive layer made of a synthetic rubber resin) had peel resistance (adhesive force) of 5.00 N / 25 mm. The peel resistance (adhesive strength) of the test films 1, 2, 3, and 5 was sufficient.

  As shown in the T-type peel test, the test film has a strong adhesive force between the adhesive surfaces, so it has excellent adhesion strength at the time of sealing, and odors can be fermented or suppressed from above during actual use. Even if there is a hole in the part, there is an advantage that the odor is extremely difficult to leak because it adheres to the entire surface of the film to which the adhesiveness is imparted by the adhesive layer. Moreover, since it adhere | attaches on the whole surface of a film surface, when a hole opens, there exists an advantage that only the odor of the part vicinity leaks.

  The test films 1 to 5 shown in Table 2 above (the surface on the side where the adhesive layer is not formed is an untreated surface on which the release agent treatment or the like has not been applied) and the surface on the side where the adhesive layer is formed The test of the adhesive force with respect to a process surface was done with the following method.

  The test film was prepared as an adherend by attaching it to the SUS plate with a double-sided tape with the untreated surface facing upward. For the test films 1 to 5 cut to a width of 25 mm and a length of 200 mm, the surface on which the adhesive layer was formed was laminated on the adherend, and 300 mm / min. 1 reciprocation at a speed of Then, the test film 4 (the softening point of the adhesive layer made of polyurethane resin is 120 ° C. [measured value 125 ° C.]) tends to be difficult to stick. After leaving for 20 to 40 minutes, each of the test films 1, 2, 3, and 5 was fixed to a gripping tool of a tensile tester (manufactured by Shimadzu Corporation, trade name: Autograph AGS-G). And peeling speed 300mm / nin. Peeled off. The numerical value of the peeling force at that time was measured. The test results are shown in Table 3.

  As shown in Table 3 above, the adhesive strength of the test film 1 (the softening point of the adhesive layer made of polyurethane resin is 80 ° C. [actual measurement value 80.5 ° C.]) to the untreated surface is 0.50 N / 25 mm, test film 2 (the softening point of the pressure-sensitive adhesive layer is 90 ° C. [measured value 75 ° C.]), the adhesive strength of the untreated surface is 0.50 N / 25 mm, and test film 3 (the softening point of the pressure-sensitive adhesive layer is 90 ° C. [measured value 90 ° C]) to the untreated surface is 0.50 N / 25 mm, and the test film 4 (the adhesive layer has a softening point of 120 ° C. [measured value 125 ° C.]) to the untreated surface is 0.00 N. / 25 mm, the adhesion of the test film 5 to the untreated surface was 5.00 N / 25 mm. The adhesion of the test films 1, 2, 3 to the untreated surface was just good. In addition, the adhesive force of the untreated surface of the test film 5 (adhesive layer made of a synthetic rubber resin) was felt to be a little too strong.

  That is, the softening point of the adhesive layer made of polyurethane resin is 80 ° C. [actual measured value 80.5 ° C.] (test film 1), 90 ° C. [actual measured value 75 ° C.] (test film 2), 90 ° C. [actual measured value 90 ° C.] The adhesion strength of the untreated surface of (Test film 3) was just good, but when the softening point of the adhesive layer was 120 ° C. [actual measured value 125 ° C.] (test film 4), the untreated surface There was a tendency that it was difficult to stick. As shown in this test result, the softening point of the adhesive layer made of polyurethane resin is 70 ° C. or higher, which is slightly lower than the actual measured value 75 ° C. of the test film 2 where the adhesive strength of the untreated surface is just good. When the measured value of the test film 4 is less than 125 ° C., which tends to be difficult to stick to the untreated surface, an appropriate untreated surface adhesive force can be obtained.

  As described above, when the softening point of the pressure-sensitive adhesive layer is 70 ° C. or higher and lower than 125 ° C., an appropriate untreated surface adhesive force can be obtained. There is an advantage that it can be smoothly unwound from a roll without excessively adhering to a surface that has not been subjected to squeezing. In addition, since the adhesive surface itself is less sticky at room temperature, there is an advantage that it is difficult to stick to the hand or the like when handling.

  The test film 5 (adhesive layer made of a synthetic rubber resin) is preferably subjected to mold release treatment as much as possible because it tends to have a strong adhesive force to the untreated surface, which requires more labor and cost for production. In addition, the rubber-based or acrylic-based adhesive layer tends to feel sticky at room temperature, and when it is wound in a roll shape, it feels heavy when pulled out, and the sound that peels off can be annoying. For this reason, when a rubber-based or acrylic adhesive layer is used, it is preferable to perform a release treatment on the back surface side in a mode of winding in a roll shape.

  An odor test was performed using test films 1 to 3 and 5 shown in Table 2 above. In this odor test, the following (6) blank and (7) equivalent product (polybag with chuck) were also measured.

(6) Blank A plastic bag with a chuck (made in China, imported and sold by Komeri, thickness 40 μm) was used as a sealing bag for an odor test using an ammonia solution.

(7) Equivalent product (plastic bag with chuck)
A plastic bag with a chuck (made in China, imported and sold by Komeri Co., Ltd., thickness 40 μm) was used as a target for comparison with the above test films. That is, this plastic bag with a chuck was also accommodated in the blank plastic bag with a chuck (6), and a comparative test with each of the test films 1 to 3 and 5 was performed. Specifically, it is as follows.

  1 ml of 2.5% aqueous ammonia solution is included in the waste, and the waste is wrapped with each test film and a plastic bag with a chuck ((7) above) to seal off the odor, and this is sealed with a plastic bag with a chuck ( 6) It was housed and sealed. At this time, air was kept from entering the plastic bag with the chuck (6) as much as possible. Then, the concentration of ammonia gas leaked between the test film and the plastic bag with a chuck (6) was measured. Further, 1 ml of a 2.5% aqueous ammonia solution was included in a waste, and the waste was directly placed in a plastic bag (6) with a chuck as a blank.

  After 1 day at room temperature and 4 days later, the ammonia gas concentration (ammonia gas leakage) was measured with a gas detector (Gastec detector, manufactured by Gastec). The detector tube for measuring the ammonia gas concentration was also made by Gastec. The test results are shown in Table 3.

  As can be seen from Table 3 above, the test film 1 (above (1)) was initially 0 ppm, 2 to 5 ppm after 1 day, and 10 to 15 ppm after 4 days. Test film 2 (above (2)) was initially 0 ppm, 2 to 5 ppm after 1 day, and 10 ppm after 4 days. Test film 3 (above (3)) was initially 0 ppm, 2 to 5 ppm after 1 day, and 10 ppm after 4 days. Test film 5 (above (5)) was initially 0 ppm, 2 to 5 ppm after 1 day, and 10 to 15 ppm after 4 days. On the other hand, the comparative plastic bag with a chuck ((7) above) was initially 0 ppm, 30 days after 1 day, and 30 to 60 ppm after 4 days. The blank (above (6)) was initially> 500 ppm, 100 ppm after 1 day, and 30-50 ppm after 4 days.

  That is, the adhesive layer made of a polyurethane resin has a softening point of 80 ° C. (test film 1), 90 ° C. (test film 2), 90 ° C. (test film 3) or an adhesive layer made of a synthetic rubber resin (test film) 5) was found to have the advantage that ammonia gas leaked less than the comparative plastic bag with a chuck ((7) above), and therefore less odor leakage.

  The present invention is configured as described above and has the following effects.

According to the sealing substrate of the odorous waste and the method of sealing the odorous waste, the periphery of the odorous waste can be sealed to form a gas barrier state in which the odor does not leak to the outside. Since it hardly floats up, it can be stored for a certain period of time until it is discarded, such as used diapers, pet droppings, garbage, and other odorous waste, with little unpleasant smell.
Industrial applicability

  This sealing substrate for odorous waste can be applied to sealing various odorous wastes such as pet feces, raw garbage and the like in addition to used diapers.

Claims (8)

An odor produced by laminating and integrating a pressure-sensitive adhesive layer (11) made of a resin excluding an emulsion and a hot melt adhesive on one side of an enveloping substrate (10) and winding the pressure-sensitive adhesive layer (11) in a roll shape It is a sealing substrate for volatile waste , and is drawn out with the adhesive layer (11) on the inside, and pressure- contacted from the outside so that the adhesive layers (11) are adhered to each other. 2) is wrapped in an encapsulating substrate (10) and sealed with the adhesive layer (11), the encapsulating substrate (10) and the adhesive layer (11) have gas barrier properties, The adhesive layer (11) is made of a polyurethane resin having a softening point of 70 ° C or higher and lower than 125 ° C. The peel force of the T-shaped peel test after adhering the formed adhesive layers (11) of the sealing substrate of odorous waste and leaving it for 20 to 40 minutes is 4.00 N / 25 mm or more. The sealing base material of the odorous waste of Claim 1.   The sealing base material of the odorous waste of Claim 1 or 2 which set 5% modulus of the covering base material (10) to 5-100N / 15mm.   The sealing base material for odorous waste according to any one of claims 1 to 3, wherein the breaking strength of the covering base material (10) is set to 15 to 200 N / 15 mm.   The sealing substrate for odorous waste according to any one of claims 1 to 4, wherein the surface on which the adhesive layer (11) is not formed is an untreated surface that has not been subjected to a release agent treatment. A sealing base material for odorous waste that is wound in a roll shape with the adhesive layer (11) as the inside, and is substantially V with the adhesive layer (11) of the pair of sealing base materials (1) inside. The adhesive layers (11) are pulled out so as to form a letter shape and pressed from the outside with a sponge roller (5), so that the adhesive layers (11) are adhered to the entire surface of the film provided with adhesiveness by the adhesive layer (11). The sealing base material for odorous waste according to any one of claims 1 to 5. The sealing base material for odorous waste according to any one of claims 1 to 6 , wherein the softening point of the adhesive layer (11) is 70 ° C or higher and 90 ° or lower.   The sealing substrate (1) for odorous waste according to any one of claims 1 to 7, wherein the odorous waste (2) is wrapped in a covering substrate (10) and the adhesive layer ( The sealing method of the odorous waste characterized by sealing by 11).

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