JPH0925001A - Drain bag for kitchen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep a moderate filtering speed and moderate filtering performance and to prevent oil leakage by forming a bag with non-woven fabric laminate of an oil-absorbing layer having a plurality of drain holes and a water-filtering layer. SOLUTION: A drain bag has a bottom, side ends 2, 3, an opening 4 opening upwards. The drain bag is made of the non-woven fabric laminate of an oil- absorbing layer 6 made of non-woven fabric made by a melt-blow method and having a plurality of drain holes 5 as an outer layer and a water-fitting layer 7 made of non-woven fabric made by a span-bond method as an inner layer. The non-woven fabric made by a melt-blow method forming the oil absorbing layer includes polypropylene resin and ethylene α-olefin copolymer resin. The non-woven fabric made by a span-bond method forming the filtering layer is polypropylene resin. The drain bag for kitchen has good oil absorbing performance and thus is effective for keeping a sanitary and beautiful kitchen and preventing environmental pollution by dirty water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kitchen drainer bag, and more particularly, it has a solid drainage layer and a layer for adsorbing oil separated from cooking waste, oil dregs, etc., and has an appropriate drainage rate. Since it does not leak oil while maintaining filtration performance,
The present invention relates to a kitchen drainer bag that is effective in maintaining sanitary aesthetics, maintaining beauty, and preventing environmental pollution due to dirty water.

[0002]

2. Description of the Related Art In daily life, garbage generated in the kitchen at any time, such as food scraps, fish bones, vegetable scraps, cooking scraps, food packaging materials, coffee, green tea leaves, tea leaves, fruit chips, etc. We store cooking waste, leftover food, oil dregs,
A kitchen drainer bag is used to separate and remove water to some extent and discard the remaining solid matter as raw garbage. This kitchen drainer bag is required to have a drainage property so as to filter only water to leave a solid substance, and is required to have a required strength to hold the weight of the solid substance. Conventionally, this kitchen drainer bag is made of a synthetic resin film such as polypropylene, polyethylene, polyester, nylon, polyurethane or the like, a non-woven fabric, a woven fabric or a net formed into a bag shape, or a bag of a synthetic resin film having a drainage hole or the like. Is commonly used.

[0003]

However, in the conventional kitchen drainer bag, since the mesh size of the fibers cannot be made finer than a certain level in order to keep the drainage speed moderate, it is separated from cooking waste or oil dregs. Oil leaks out of the kitchen drainer bag along with water and adheres to the kitchen sink or drain as oil stains, or in extreme cases, oil accumulates inside the drain and clogs the drain. In terms of hygiene, there was a problem that inconvenience occurred in terms of maintaining aesthetics.

Therefore, an object of the present invention is to have a solid drainage layer and a layer for adsorbing oil separated from cooking waste, oil dregs, etc., while maintaining an appropriate drainage speed and filtration performance. The purpose of the present invention is to provide a kitchen drainer bag which is effective for sanitizing the kitchen, maintaining its beauty, and preventing environmental pollution due to sewage.

[0005]

In order to solve the above-mentioned problems, the present invention provides a polypropylene resin and ethylene / α-
A non-woven fabric laminate comprising a melt-blown non-woven fabric containing an olefinic copolymer resin and having an oil adsorbing layer having a plurality of drainage holes and a drainage layer comprising a polypropylene-based spun-bonded non-woven fabric. A kitchen drainer bag is provided.

Hereinafter, the kitchen draining bag of the present invention (hereinafter referred to as "the draining bag of the present invention") will be described in detail with reference to an embodiment shown in FIG.

The drainage bag shown in FIG. 1 has a bottom portion 1, side edges 2 and 3, and an opening portion 4 that opens upward. This draining bag comprises a nonwoven fabric laminate 8 having an oil adsorption layer 6 made of a melt blown nonwoven fabric having a plurality of drainage holes 5 and a drainage layer 7 made of a spunbond nonwoven fabric, and an oil adsorption layer 6 It is formed in a bag shape with the drainage layer 7 on the outside.

In this drainage bag, as shown in the enlarged view of FIG. 2, the oil adsorption layer 6 and the drainage layer 7 are such that the oil adsorption layer 6 and the drainage layer 7 are the side edges 2 and 3 of the drainage bag. It may be joined only by itself. Further, as shown in an enlarged manner in FIG. 3, it may be adhered by an adhesive layer 9, or FIG.
As shown in enlarged form, the melt-blown non-woven fabric and the spun-bonded non-woven fabric in which the oil adsorption layer 6 and the drainage layer 7 form each layer may be joined by intertwining the fibers. Furthermore, the oil adsorption layer 6 and the drainage layer 7 may be partially adhered in a dot shape or may be adhered over the entire surface. Partial laminating is preferable because it does not reduce the drainage rate.

The drainage bag of the present invention is not limited to the one shown in FIG. 1 having an oil adsorption layer made of a melt blown nonwoven fabric on the outside and having a drainage layer made of a spunbonded nonwoven fabric on the inside. It may have an oil adsorption layer made of a non-woven fabric on the inside and a drainage layer made of a non-woven fabric on the outside. For example, when the solid matter to be filtered in a draining bag is large, the oil adsorption layer made of a melt blown nonwoven fabric is on the side in contact with the solid matter, and when the solid matter to be filtered is relatively small, the spunbond nonwoven fabric is used. If the respective drainage layers are placed on the side in contact with the solid matter,
It is possible to prevent clogging of the oil adsorption layer made of the non-woven fabric of melt-blown method with solid matter, and it is possible to effectively adsorb oil.

Further, in this drainage bag, the drainage holes have a diameter of 0.2 to 6 mm on the side surface of the oil adsorbing layer and an opening ratio of 10 to 10.
Perforated and shaped at a density of 50%. Also, the drain hole is
Depending on the solid matter to be filtered, it may be provided over the entire side surface of the water draining bag or may be provided only in a part thereof.
This drain hole is not particularly limited, and is circular, oval, rectangular,
It may have any other shape.

The drainage bag may be manufactured by stacking two non-woven fabric laminates obtained by laminating a spunbonded non-woven fabric and a melt blown non-woven fabric and adhering the three side edges to each other. The body may be folded in two and the two side edges may be bonded together. The adhesion may be performed by heat fusion or pressure bonding. The drain holes may be formed by punching after forming a drain bag, but it is preferable that the drain holes be formed in the nonwoven fabric laminate in advance.

The adhesion by heat fusion can be performed, for example, by fusing and sealing with a heat cutter. Further, the adhesion by pressure bonding can be performed by a pressure bonding method using a high frequency welder or the like.

The manufacture of a nonwoven fabric laminate forming a drainage bag is
For example, a method in which a melt blown nonwoven fabric and a spunbonded nonwoven fabric, which are separately manufactured in advance, are overlapped with each other with or without an adhesive, and the two are joined together; Is produced by extruding and spraying fine fibers of a melt of a composition containing a polypropylene resin and an ethylene / α-olefin copolymer resin by a melt blow method and depositing the fine fibers to form a melt blow nonwoven fabric. Method: It can be carried out according to a method of forming a spunbonded nonwoven fabric made of a polypropylene resin by a spunbond method on a previously manufactured meltblown nonwoven fabric, and the like. Also,
In order to improve the adhesive strength at the interface between the spunbonded non-woven fabric and the melt blown non-woven fabric in the obtained non-woven fabric laminate, a method of partially forming an adhesive part by a heat embossing roll or a high frequency welder, needle punch or water flow According to any method such as a method of entanglement of fibers with each other by an entanglement method or a method of applying an adhesive made of nylon resin or the like in a dot shape on one of the joint surfaces and then heating and adhering them to laminate. May be.

The melt-blowing non-woven fabric forming the oil adsorption layer of the drainage bag of the present invention contains a polypropylene resin and an ethylene / α-olefin copolymer resin.
The polypropylene resin, which is the material of the melt blown nonwoven fabric, is composed of a polymer containing propylene as a main component, and is a homopolymer of propylene or a copolymer of propylene and another compound copolymerizable with propylene. It consists of coalescence. Examples of other compounds copolymerizable with propylene include ethylene, vinyl chloride, vinyl acetate, methacrylic acid esters, acrylic acid esters and the like. These may be used alone or in combination of two or more in the polypropylene resin. Specific examples of the polypropylene-based resin include propylene / ethylene copolymers and vinyl chloride / polypropylene copolymers.

The ethylene / α-olefin copolymer resin, which is another main material constituting the meltblown nonwoven fabric, is a copolymer containing ethylene and α-olefin as main components. Examples of the α-olefin include propylene, 1-butene, 4-methyl-1-pentene and the like. These may be used alone or in combination of two or more in the ethylene / α-olefin copolymer. The content ratio of ethylene / α-olefin in the ethylene / α-olefin copolymer is usually
The molar ratio is about 0.08 to 0.7, and particularly preferably about 0.2 to 0.7.

Further, specific examples of the ethylene / α-olefin copolymer include ethylene / propylene / 1-butene copolymer and ethylene-4-methyl-1-pentene copolymer.

The content ratio of polypropylene resin / ethylene / α-olefin copolymer in the melt blown nonwoven fabric is usually about 95/5 to 60/40 by weight ratio, particularly preferably 90/10 to 70 /. It is about 30.

Further, the basis weight of this melt blown nonwoven fabric
Is usually 5 to 50 g / m^TwoIt is about 1 and preferably 1
0-30g / m^TwoIt is a degree. Also, the air flow rate is usually
5.0-80 ml / cm^Two・ It is about sec and is preferable
Ku-9.0-40ml / cm ^Two-It is about sec.

Further, the thickness of the oil adsorption layer made of the melt blown nonwoven fabric is usually about 0.05 to 1.0 mm, preferably about 0.5 to 0.8 mm. In addition, the fiber diameter of the fibers constituting the melt blown nonwoven fabric is 1 to 10 μm in that the oil adsorption layer exhibits good oil absorption performance.
It is about m, preferably about 2 to 5 μm.

When the melt-blown non-woven fabric is produced in advance, the production can be carried out according to a conventional method and is not particularly limited. For example, it can be performed according to the method described in JP-A-1-246406.

The drainage bag of the present invention has a drainage layer made of a spunbonded nonwoven fabric of polypropylene resin.

The polypropylene resin which is the main material of the spunbonded nonwoven fabric may be the same as the polypropylene resin which is the main material of the melt blown nonwoven fabric of the oil adsorption layer, or may be composed of different components.

The basis weight of the spunbond nonwoven fabric is usually about 3 to 80 g / m ² , and preferably 5
It is about 15 g / m ² . The air flow rate is usually 1
It is about 100 to 400 ml / cm ² · sec, preferably about 200 to 300 ml / cm ² · sec.

The thickness of the drainage layer made of the spunbonded nonwoven fabric is usually about 0.1 to 20 mm, preferably about 0.1 to 0.8 mm.

When the spunbonded nonwoven fabric is manufactured in advance, the spunbonded nonwoven fabric can be manufactured according to a conventional method and is not particularly limited.

[0026]

The present invention will be specifically described below with reference to examples and comparative examples of the present invention.

Example 1 Polypropylene and ethylene
A composition was prepared by mixing a propylene copolymer (Tufmer A20090, manufactured by Mitsui Petrochemical Industry Co., Ltd.) at a ratio of 90/10 (weight ratio). The obtained composition is fed to an extruder, heated to 230 ° C. and kneaded to continuously prepare a uniform melt, and a melt blow die having specifications described in JP-A-1-246406 discloses a fine fiber. In addition to being extruded into a sheet shape, it was blown with high-speed heated air and stretched in the fiber direction to form a fiber.

The formed fibers were deposited on a stainless net to form a melt blown nonwoven fabric having a fiber diameter of 3 μm, a thickness of 0.2 mm and a basis weight of 15 g / m ² .
Next, using a roll with needles planted on the outer circumference,
By heating to 0 ° C., through holes having a pore diameter of 6 mm were perforated at a density of a porosity of 35% in the melt blown nonwoven fabric.

The melt-blown nonwoven fabric obtained and a spunbond nonwoven fabric made of polypropylene (fiber diameter: 15
μm, basis weight: 5 g / m ² , thickness: 0.1 mm),
Each of them is cut into a size of 260 mm x 470 mm, and the non-woven fabric of the melt blown method is placed inside, and then they are folded in two, and the two sides are fused and fused to form 250 mm x 235 mm.
A drainage bag having a size shown in FIG. This drainage bag was evaluated for drainage and oil retention according to the following methods. The results are shown in Table 1.

An iron cylinder having a drainage diameter of 10 cm and a height of 30 cm is vertically fixed, and a draining bag is fixed to the lower part thereof. Next, 500 ml of tap water is added from the top of the cylinder. 100 ml after tapping, when the tap water in the cylinder decreased to 250 ml
The time until it decreased was measured and used as an index of drainage.

Oil Retention First, after measuring the weight (A) of the drainage bag, the diameter of 10c
m and a depth of 15 cm were set inside a cylindrical stainless wire mesh. Next, the salad oil and water were mixed in a weight ratio of 20/80 and shaken well to prepare a water-oil mixture,
Immediately after that, 1000 ml of the mixture was put into a draining bag, and the water-oil mixture was filtered. Five minutes after the addition of the water-oil mixture, the drain bag was removed from the wire net and the weight (B) was measured. B-A was determined as an index of oil retention.

(Example 2) Spunbond nonwoven fabric made of polypropylene (fiber diameter: 15 μm, basis weight: 5 g /
m ² , thickness: 0.1 mm) and a melt blown nonwoven fabric perforated in the same manner as in Example 1 (fiber diameter: 3 μm, basis weight: 15 g / m ² , thickness: 0.2 mm, porosity: 20
%, Pore diameter: 5 mm), and then the fibers between the two nonwoven fabrics are entangled with each other at a water pressure of 30 kg / cm ² by a hydroentangling method to laminate a spunbonded nonwoven fabric and a meltblown nonwoven fabric. Got the body

Drainage bags were produced from the obtained nonwoven fabric laminate in the same manner as in Example 1, and the drainage and oil retaining properties of the drainage bags were evaluated. The results are shown in Table 1.

(Comparative Example 1) A polyethylene film having a basis weight of 10 g / m ² was provided with a hole having a hole diameter of 5.3 mm and an opening ratio of 39%, and then a draining bag was produced in the same manner as in Example 1.
The drainage and oil retention properties were evaluated. The results are shown in Table 1.

[0035]

[0036]

EFFECTS OF THE INVENTION Since the kitchen drainer bag of the present invention has an excellent oil adsorption property, oil separating from cooking waste, oil dregs, etc. does not leak out. It is effective in that it can prevent environmental pollution.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a kitchen drainer bag according to an embodiment of the present invention.

FIG. 2 is an enlarged view for explaining a part of the kitchen drainer bag according to the embodiment of the present invention.

FIG. 3 is an enlarged view for explaining a part of the kitchen drainer bag according to another embodiment of the present invention.

FIG. 4 is an enlarged view for explaining a part of the kitchen drainer bag according to another embodiment of the present invention.

[Explanation of symbols]

 1 Bottom part 2 and 3 Side edge 4 Opening part 5 Drain hole 6 Oil adsorption layer 7 Drainage layer 8 Nonwoven fabric laminate 9 Adhesive layer

Claims (1)

[Claims] 1. An oil adsorbing layer comprising a polypropylene resin and an ethylene / .alpha.-olefin copolymer resin and having a plurality of drainage holes, and a polypropylene resin spunbond nonwoven fabric. A drainage bag for kitchen comprising a nonwoven fabric laminate having a drainage layer comprising