Oil absorbent wipe with rapid visual indication
First Claim
1. An oil absorbing wipe suitable for wiping a users skin or hair comprising an oil absorbing porous film-like substrate formed of a thermoplastic film or consolidated nonwoven web of a thermoplastic material which porous substrate changes color when loaded with oil by a change in the L* value of 10 units or more when loaded with oil at 6 mg/cm2 or less, the porous substrate having an oil based coating on at least 1 percent of the wipe material surface area, wherein the oil based coating is a vegetable-based or mineral based oil or blends thereof.
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Accused Products
Abstract
There is provided an oil absorbing wipe material suitable for wiping a users'"'"' skin or hair and a method for their manufacture. The wipes comprise at least an oil absorbing porous film-like substrate of a thermoplastic material. Generally, the wipe changes transparency or color (a change in L* of about 10 or more) when loaded with oil to provide an oil absorption indication functionality. The wipe is formed by (a) providing a porous film-like substrate of a thermoplastic material capable of absorbing facial or body oils and changing transparency or color, and (b) coating the porous substrate with oil, either continuously or in regions, wherein the oil coating is not sufficient to change the transparency or color of the substrate such that it loses its oil absorption indication functionality. This oil coating being of a nature such that the coated porous substrate has an increased oil absorption indicating functionality.
58 Citations
37 Claims
- 1. An oil absorbing wipe suitable for wiping a users skin or hair comprising an oil absorbing porous film-like substrate formed of a thermoplastic film or consolidated nonwoven web of a thermoplastic material which porous substrate changes color when loaded with oil by a change in the L* value of 10 units or more when loaded with oil at 6 mg/cm2 or less, the porous substrate having an oil based coating on at least 1 percent of the wipe material surface area, wherein the oil based coating is a vegetable-based or mineral based oil or blends thereof.
- 21. A method of forming an oil absorbing wipe suitable for a user'"'"'s face or skin comprising providing an oil absorbing porous film-like substrate formed of a thermoplastic film or consolidated nonwoven web of a thermoplastic material which porous substrate changes transparency or color when loaded with oil, coating the porous substrate with an oil based coating on at least 1 percent of the wipe material surface area.
Specification