Mite propagation inhibition sheet

Abstract

A mite propagation inhibiting sheet has a sheet layer, an adhesive layer, and an unwoven fabric layer wherein mites are allowed to invade from a surface of the unwoven fabric layer to which an adhesive is not adhered, thereby forming a colony and the mites are trapped by an adhesive of the adhesive layer when the mites invade deep in the unwoven fabric layer by instinct, and further, a method of manufacturing a mite propagation inhibiting sheet, and a method of inhibiting the propagation of mites.

Claims

1. A mite propagation inhibiting sheet comprising, in this order, a sheet layer, an adhesive layer, a first unwoven fabric layer having a first surface attached to the adhesive layer and a second unwoven fabric layer provided at a second surface of the first unwoven fabric layer which is opposite to the first surface, wherein mites enter the mite propagation inhibiting sheet through the second unwoven fabric layer and are trapped by an adhesive in the adhesive layer.

2. The mite propagation inhibiting sheet of claim 1, wherein the adhesive in the adhesive layer is also contained inside of the first unwoven fabric layer.

3. A method of inhibiting the propagation of mites in an enclosure containing fowl comprising the step of attaching the mite propagation inhibiting sheet of claim 2 to a structure contained in the enclosure, wherein the second unwoven fabric layer is brought into contact with the structure.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) FIGS. 1(A) is a plan view and 1(B) is a sectional view, for explaining a prior art respectively;

(2) FIG. 2 is a sectional view of a mite propagation inhibiting sheet according to one embodiment of the invention;

(3) FIG. 3 is a sectional view of a mite propagation inhibiting sheet according to another embodiment of the invention; and

(4) FIG. 4 is a view showing a state where dermanyssus gallinae are tapped four days after installment of the mite propagation inhibiting sheet according to one embodiment of the invention.

BEST MODE FOR CARRYING OUT THE INVENTION

(5) A configuration of a mite propagation inhibiting sheet 10 relating to the present invention is now described hereinafter.

(6) As a sheet to be used in a sheet layer for use in the present invention, there can be provided examples of a synthetic resin sheet such as polyethylene, polypropylene, polyester, polyvinyl chloride, etc., and a pasted sheet wherein the synthetic resin sheet and paper are stuck together. The thickness of the sheet is suitable in the range from 0.03 mm to 0.5 mm. The sheet is preferable to be opaque but it is allowed to be transparent. The sheet is allowed to be colored or non-colored.

(7) As an adhesive for use in the present invention, an adhesive used as an adhesive tape can be used. Further, a natural-based, a synthetic-based, and an acrylic-based adhesive can be used. Still further, an adhesive adapted to a spray coating can be used. For example, an adhesive as disclosed in JP 2013-014666A can be preferably used. The thickness of an adhesive layer is suitably in the range of from 0.01 to 0.5 mm, and it is preferable that a part of the adhesive layer intrudes into an unwoven fabric layer. Mites, particularly, dermanyssus gallinae have an instinct to invade deep into the unwoven fabric layer, so that mites are allowed to invade from a surface of the unwoven fabric to which an adhesive is not adhered, thereby capturing the mites at the innermost part of the unwoven fabric.

(8) As the unwoven fabric layer for use in the present invention, there can be provided examples of a synthetic fiber unwoven fabric such as a polyolefin-based resin like polyethylene or polypropylene, a polyester, rayon, polyvinyl alcohol, polyamide, acrylic, etc. and a natural pulp fiber unwoven fabric such as wooden pulp, Manila hemp, etc. Further, there are used unwoven fabrics having a high aeration property. The thickness of the unwoven fabric layer is suitable in the range of from 2 mm to 12 mm, particularly preferably in the range of from 3 mm to 5 mm.

EXAMPLE 1

(9) FIG. 2 shows a method of manufacturing a mite propagation inhibiting sheet 10 comprising the steps of providing an adhesive layer 30 by coating a sheet layer 20 at one side surface with an adhesive, and providing an unwoven fabric layer 40 on the adhesive layer 30 and then pressing these three layers together lightly to thereby integrate these three layers.

(10) A polyester sheet in the thickness of 0.1 mm is coated at one side surface with a hot-melt synthetic rubber adhesive by a hot-melt synthetic rubber adhesive device so that the thickness of the hot-melt synthetic rubber adhesive is 0.08 mm. Then a polyester-based unwoven fabric having a thickness of 3 mm is adhered to the adhesive layer by a pressing roller with a low pressure, thereby integrating these three layers to fabricate the mite propagation inhibiting sheet 10. An adhesive is not adhered to the surface of the unwoven fabric side of the mite propagation inhibiting sheet 10.

EXAMPLE 2

(11) FIG. 3 shows a method of manufacturing a mite propagation inhibiting sheet 10 comprising the steps of coating a surface of an unwoven fabric layer 40 at one side thereof with an adhesive layer 30 provided with a layer 50 wherein an adhesive intrudes inside a part of the unwoven fabric by hot-melt spray coating, then pressing the sheet layer 20 lightly onto the surface of the unwoven fabric coated with the adhesive at one side thereof, thereby integrating these four layers.

(12) The polyester sheet in the thickness of 4 mm is coated at one side surface with the adhesive layer 30 provided with the layer 50 wherein an adhesive intrudes inside a part of the unwoven fabric by spraying a hot-melt synthetic rubber-based adhesive with a hot-melt spray coating. Then a polyethylene-based laminate paper in the thickness of 0.1 mm is adhered to the adhesive layer by a pressing roller with a low pressure, thereby integrating these four layers to fabricate the mite propagation inhibiting sheet 10. An adhesive is not adhered to the surface of the unwoven fabric side of the mite propagation inhibiting sheet 10.

EXAMPLE 3

(13) There is shown a method of manufacturing a mite propagation inhibiting sheet 10 comprising the steps of coating a surface of an unwoven fabric layer 40 at one side thereof with an adhesive layer 30 provided with a layer 50 wherein an adhesive invades inside a part of the unwoven fabric by an adhesive spray, then pressing the sheet layer 20 light on the surface of the unwoven fabric coated with the adhesive at one side thereof, thereby integrating these four layers.

(14) The polyester sheet in the thickness of 4 mm is coated at one side surface with the adhesive layer 30 provided with the layer 50 wherein an adhesive intrudes inside a part of the unwoven fabric by spraying a synthetic rubber-based adhesive spray encapsulated in an aerosol can. Then the adhesive layer is covered with a polyethylene-based sheet in a thickness of 0.05 mm and the same sheet is pressed lightly by hand to thereby integrate these four layers and fabricate the mite propagation inhibiting sheet 10. An adhesive is not adhered to the surface of the unwoven fabric side of the mite propagation inhibiting sheet 10.

(15) The mite propagation inhibiting sheets 10 obtained in Examples 1 to 3 are installed so as to wind around feed straps, and reinforced pipes of cages of the chicken house in a summer season wherein the unwoven fabric side contacts the feed straps, and reinforced pipes by use of clothespins, adhesive tapes, etc. The result is shown in Table 1. Further, 4 days later state of Example 1 is shown in FIG. 4.

(16) TABLE-US-00001 TABLE 1 mite propagation inhibiting sheet Example 1 Example 2 Example 3 2 hours later X X X 6 hours later X 1 day later 2 days later 3 days later 4 days later Symbols in Table 1 are as follows. X Dead mite can not be found There are sparse dead mites There are a lot of dead mites Dead mites form colony

(17) As is evident from the above mentioned result, the mite propagation inhibiting sheet 10 of the present invention is simple in structure, and particularly effective against dermanyssus gallinae in the chicken house, and indispensable for the chicken industry.