Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Coated or impregnated woven – knit – or nonwoven fabric which... – Two or more non-extruded coatings or impregnations
Patent
1997-04-11
1999-04-06
Raimund, Christopher
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Coated or impregnated woven, knit, or nonwoven fabric which...
Two or more non-extruded coatings or impregnations
442 67, 442123, 442125, 442164, 442351, B32B 2704
Patent
active
058918116
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an indicator material for indicating the degree of dissipation of a volatile oily substance which occurs with the passage of time, the volatile oily substance being contained, an active ingredient, in a deodorant, an aromatic agent, an anti-fungal agent, an insecticide, a mothproofing agent, and the like. In particular, it relates to an indicator material which is prepared by impregnating a non-woven fabric with the above oily substance and which indicates the degree of such a dissipation of the above oily substance as occurs with the passage of time.
TECHNICAL BACKGROUND
The deodorant, aromatic agent, anti-fungal agent, insecticide, mothproofing agent, and the like, which are prepared by providing oily substances having volatility at room temperature or an increased temperature as active ingredients and impregnating predetermined carriers with the active ingredients, have been and are used as substitutes for conventional articles containing volatile gels or solids as active ingredients. Most of the above oily substances are odorless, and when they are used by impregnating carriers with the above odorless oily substances, it is difficult to ascertain even the time of expiration thereof, not to mention the remaining content thereof, by the human sense of smell. For this reason, there have been developed a variety of indicator materials which can visually show users the remaining time and the expiration time of the oily substances.
Among the above indicator materials are the following two indicator materials each of which is prepared by impregnating a non-woven fabric with the above oily substance and can visually show users the degree of the dissipation thereof which occurs with the passage of time.
One is a mothproofing material which also works as a mothproofing capability indicator, in which one surface of an oil-permeable paper-like material (including a non-woven fabric), which is altered into transparency when an oil (oily substance) is contained, is used as an indicating surface, an oil-impermeable pattern layer is formed on the entirety or part of the other surface of the paper-like material to obtain a substrate and the substrate is impregnated with an oil mothproofing agent volatile at room temperature (JP-B-4-36122).
In the above mothproofing material which also works as a mothproofing capability indicator, since the paper-like material is altered into transparency when an oil mothproofing agent is contained, the pattern layer provided on the other side can be visually observed. On the other hand, since the paper-like material is gradually brought into an original non-transparent state with the dissipation of the liquid oil, the pattern layer formed on the other side gradually becomes visually non-observable. Depending upon the pattern layer visually observable from the paper-like material side, therefore, users can visually know the degree of dissipation of the liquid oil (mothproofing chemical) which occurs with the passage of time.
The other one is a time length indicator prepared by consecutively applying a colorant, which is altered into transparency when a liquid volatile at room temperature penetrates it, to portions where the above contained liquid is dissipated earlier and later on the surface of a substrate sheet (including a non-woven fabric) into which a liquid containing the liquid volatile at room temperature is penetrable, such that the colorant form layers as time length indicating layers (Japanese Laid-open Utility Model Publication No. 5-14983). The above time length indicator uses the fact that when the substrate sheet containing the liquid volatile at room temperature is held horizontally, the liquid volatile at room temperature is easily successively dissipated from an edge portion of the substrate sheet surface and that when the substrate sheet containing the liquid volatile at room temperature is held vertically, the liquid volatile at room temperature is easily successively dissipated from the top of the substrate sheet.
Ashida Tetsuya
Ikezawa Masayoshi
Hakugen Co., Ltd.
Mitsubishi Paper Mills Ltd.
Raimund Christopher
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