JP2006312503A - Sealing film of odorous waste - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealing film of odorous waste, storable without substantially drifting out an uncomfortable odor for a specific period up to disposing of the odorous waste such as a used paper diaper, a pet dung, garbage and the others. <P>SOLUTION: This sealing film has a wrapping-covering film 3 and an adhesive layer 4 formed in the wrapping-covering film 3, and has gas-barrier performance by the wrapping-covering film 3 and the adhesive layer 4, and seals the odorous waste 1 by the adhesive 4 by wrapping in the wrapping-covering film 3, and is set in 1.0 N/25 mm or more in separation force of a T-shape separation test of this sealing film. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sealing film 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 twists and the smell leaks 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 film is intended to be provided.

In order to solve the above problems, the present invention takes the following technical means.
(1) The film of odorous waste according to the present invention comprises a covering film and an adhesive layer formed on the covering film, and the covering film and the adhesive layer have gas barrier properties, The odorous waste is wrapped in a covering film and sealed with the adhesive layer, and the peeling force of the sealing film is set to 1.0 N / 25 mm or more in a T-shaped peeling test (based on JIS K6854-3). It is characterized by.

  This odorous waste sealing film is used to wrap odorous waste such as used diapers (until the date of garbage collection) in an enveloping film, and the adhesive layer formed on the enveloping film. Since the sealing is performed, the periphery of the odorous waste can be sealed to obtain a gas barrier state in which odor does not leak to the outside.

  Moreover, since the peel force of the T-shaped peel test of this sealing film was set to 1.0 N / 25 mm or more, when the odorous waste was encapsulated, air biting occurred in the film, and this air was taken outside. Even if the pressure (the mechanical pressure or the gas pressure generated from the waste fermented over time) is applied to the film, it is difficult for the film to peel off. Difficult to leak odor. The larger the peeling force value is 1.0 N / 25 mm or more, the larger the odor is preferable, so the upper limit of the numerical value is not particularly limited, and the peeling force by the adhesive layer is technically possible, A numerical value such as 30 or 50 N / 25 mm or more may be used.

  As said covering film, soft plastic films, such as a non-stretched polypropylene film, a polyethylene film, a mixture of a non-stretched polypropylene film and a polyethylene film, can be used, for example.

The gas barrier property by the enveloping film and the adhesive layer can be such that the enveloping film itself has a gas barrier property, the adhesive layer can have a gas barrier property, and between the enveloping film and the adhesive layer. A gas barrier property can also be obtained by a synergistic action.
(2) An unstretched polypropylene film having a thickness of 20 to 60 μm may be used as the covering film.

  When comprised in this way, when enveloping odorous waste by the synergistic effect of the softness | flexibility which an unstretched polypropylene film itself has, and its thickness of 20-60 micrometers, from the said odorous waste toward an outer periphery Even if radial tunnel-like air biting occurs, it can be easily crushed manually or mechanically so that the tunnel is blocked by the softness and flexibility of the film itself, and leakage of odors to the outside can be prevented. In addition, the barrier property that prevents the odorous gas from permeating the film can be provided.

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

  According to this sealing film of odorous waste, the odorous waste can be sealed to create a gas barrier state that does not leak odors to the outside, so that almost no odor drifts. It can be stored for a certain period of time until it is discarded, pet droppings, garbage, and other odorous waste, with almost no unpleasant odor coming out.

  In addition, air entrapment occurs in the film when enveloping odorous waste, and the pressure to move this air outward (generated from mechanical pressure or waste fermented over time) Even if a gas pressure is applied, it is difficult for the films to separate from each other, so that the movement of air is difficult and the odor is difficult to leak.

  Embodiments of the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, the sealing film 2 of the odorous waste material 1 of this embodiment includes a covering film 3 and an adhesive layer 4 applied and formed on the entire surface of one side of the covering film 3. The covering film 3 and the adhesive layer 4 have gas barrier properties, and the odorous waste 1 is wrapped in the covering film 3 and sealed by the adhesive layer 4.

  As the covering film 3, an unstretched polypropylene film having a thickness of 20 to 60 μm and having transparency was used. The sealing film 2 is obtained by setting the peel force of a T-shaped peel test (conforming to JIS K6854-3) to 1.0 N / 25 mm or more. This peeling force serves as an index of the adhesive force between the two bonded films. The T-shaped peel test was performed by the following method. The test film was cut into a size of 50 mm width × 200 mm length. The cut two test films were bonded with the surfaces of the adhesive layer 4 facing each other, and 300 mm / min. Bonding was carried out with a constant load by reciprocating once at a speed of. Then, it cut out to the size of width 25mm x length 200mm from the center vicinity of a test film. After leaving for 20 to 40 minutes, the above-mentioned specimen film to be bonded is fixed to a gripping tool of a tensile tester (manufactured by Shimadzu Corporation, trade name: Autograph AGS-G), and the peeling speed is 300 mm / nin. And the numerical value at that time was measured.

  As the adhesive layer 4, for example, an acrylic coating agent, a synthetic rubber coating agent, a coating agent made of a polyether polyurethane resin, or the like can be used. In addition, the gas barrier property by the covering film 3 and the adhesive layer 4 can be such that the covering film 3 itself has a gas barrier property, and the adhesive layer 4 can have a gas barrier property. The film 3 and the adhesive layer 4 may have a gas barrier property due to a synergistic action.

  Next, the use state of the sealing film of the odorous waste of this embodiment will be described.

  The sealing film 2 of the odorous waste is wrapped in the envelope film 3 when the odorous waste 1 such as a used diaper is stored until the garbage collection date, and the adhesive film formed on the envelope film 3 is adhered. Since it is sealed with the layer 4, the odor generating waste 1 is sealed around so that it can be in a gas barrier state in which no odor leaks to the outside, and almost no odor drifts. There is an advantage that pet shit, garbage, and other odorous waste 1 can be stored without causing unpleasant odor almost for a certain period until it is discarded.

  Moreover, since it was decided to use an unstretched polypropylene film having a thickness of 20 to 60 μm as the covering film 3, the synergistic effect of the flexibility of the unstretched polypropylene film itself and its thickness of 20 to 60 μm resulted in odorous disposal. When enveloping the object 1, even if radial tunnel-like air biting occurs from the odorous waste 1 toward the outer periphery, the film itself is soft or supple, so that the tunnel is closed by hand or There is an advantage that it can be easily crushed and can prevent leakage of odors to the outside, and can also have a barrier property for preventing odorant gas from permeating through the film.

  Furthermore, the peel force of the T-shaped peel test of the sealing film 2 is set to 1.0 N / 25 mm or more, and when the odorous waste 1 is encapsulated, air biting occurs in the film, and this Even if pressure is applied to move air outward (mechanical pressure or gas pressure due to waste fermented over time), it is difficult for separation between films to occur. Odor is difficult to leak and unstretched polypropylene film with a thickness of 20-60 μm is used and its peel strength is 1.0 N / 25 mm or more. Even if a force is applied to peel off after bonding, the action of the film itself is stretched before the adhesive surface peels off, and the movement of the adhesive surface to be separated is restrained, and odor is discarded. Object 1 is film mutual It is possible to maintain the state of being sealed in.

  Next, another use state of the sealing film of odorous waste of this embodiment will be described.

  As shown in FIG. 2, the adhesive layer 4 is pulled out so as to form a substantially V shape with the adhesive layer 4 of a pair of sealing films 2 wound in a roll inside, and is pressed by a sponge roller from the outside to form the adhesive layer. 4 are stuck together. The sponge roller is rotationally driven by a known motor (not shown). The user supplies used diapers or the like to the inside of the pair of sealing films 2 arranged in a V shape to rotate the sponge roller 5. Then, the pair of sealing films 2 are fixed to each other while the used diapers are compressed by the sponge roller 5 and air is pushed out, and the used diapers are sealed by the sealing film 2, and the used diapers There is almost no odor drifting around the gas barrier.

  Thus, since the sealing film 2 is pressed and adhered by the sponge roller, a large number can be processed in a short time, which is particularly convenient when used for business purposes such as hospitals and care welfare facilities. Is good.

  Example 1: An adhesive layer (thickness 5 μm) made of an acrylic resin (made by Nippon Synthetic Chemical Industry Co., Ltd., trade name 5302A) is provided on one side of an enveloping film (thickness 40 μm) made of an unstretched polypropylene (CPP) film. Formed. The peeling force of the T-shaped peeling test was 1.20 N / 25 mm.

  Example 2: An adhesive layer (thickness 8 μm) made of an acrylic resin (made by Nippon Synthetic Chemical Industry Co., Ltd., trade name 5302A) on one side of an enveloping film (thickness 40 μm) made of an unstretched polypropylene (CPP) film. Formed. The peel strength of the T-shaped peel test was 1.80 N / 25 mm.

  Example 3: An adhesive layer (thickness 5 μm) of a synthetic rubber type (trade name S-132M, manufactured by Hirono Chemical Co., Ltd.) is provided on one side of an enveloping film (thickness 40 μm) made of an unstretched polypropylene (CPP) film. Formed. The peel force of the T-shaped peel test was 3.0 N / 25 mm.

  Example 4: Forming an adhesive layer (thickness 5 μm) of synthetic rubber (trade name G5312, manufactured by No-Tape Kogyo Co., Ltd.) on one side of an envelope film (thickness 40 μm) made of an unstretched polypropylene (CPP) film did. The peel force of the T-shaped peel test was 4.5 N / 25 mm.

  Example 5: Adhesive layer (thickness IB-300, manufactured by Sanyo Kasei Kogyo Co., Ltd.) on one side of an enveloping film (thickness 40 μm) made of an unstretched polypropylene (CPP) film 5 μm) was formed. The peel force of the T-shaped peel test was 4.5 N / 25 mm.

  Example 6: Adhesive layer (thickness 5 μm) made of acrylic resin (trade name KN-589, manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) on one side of an enveloping film (thickness 40 μm) made of an unstretched polypropylene (CPP) film ) Was formed. The peel force in the T-shaped peel test was 7.0 N / 25 mm.

  Comparative Example 1: An adhesive layer (thickness 5 μm) made of an acrylic resin (trade name KN-800, manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) on one side of an enveloping film (thickness 40 μm) made of an unstretched polypropylene (CPP) film ) Was formed. The peeling force of the T-shaped peeling test was 0.75 N / 25 mm.

  Comparative Example 2: An adhesive layer (thickness 8 μm) made of an acrylic resin (manufactured by Nippon Synthetic Chemical Industry Co., Ltd., trade name 5767) on one side of an enveloping film (thickness 40 μm) made of an unstretched polypropylene (CPP) film. Formed. The peel force of the T-shaped peel test was 0.50 N / 25 mm.

  The peel force of the T-shaped peel test of the sealing films 2 of Examples 1 to 6 is 1.0 N / 25 mm or more. An air bit is intentionally formed in the film, and this air is directed outwards with fingers. Even if it tried to move, it could not be moved.

  On the other hand, the peel force of the T-shaped peel test of the sealing films 2 of Comparative Examples 1 and 2 is less than 1.0 N / 25 mm, and an air bit is intentionally formed in the film, and the air is directed outward. I was able to move it easily when I tried to move it.

  This sealing film of odorous waste can be applied to sealing various odorous waste such as pet feces, garbage, and the like in addition to used diapers.

The perspective view explaining the use condition of the sealing film of the odorous waste of this invention. The figure explaining the other use condition of the sealing film of the odorous waste of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Odorable waste 2 Sealing film 3 Covering film 4 Adhesive layer

Claims (2)

A covering film (3) and an adhesive layer (4) formed on the covering film (3), the covering film (3) and the adhesive layer (4) having gas barrier properties, The odorous waste (1) is wrapped in the covering film (3) and sealed with the adhesive layer (4), and the peel strength of the sealing film according to the T-shaped peel test (according to JIS K6854-3) is 1 A sealing film of odorous waste characterized by being set to 0.0 N / 25 mm or more. The sealing film of odorous waste according to claim 1, wherein an unstretched polypropylene film having a thickness of 20 to 60 µm is used as the covering film (3).

Images