Method for producing laminated sheet matrix containing releasable ingredient

US6818087B1 · kind B1 · utility

Assignee

• ECS Environment Care Systems GmbH · DE

Inventors

• Michael Roreger · Neuwied, DE
• Malgorzata Kloczko · Linz, DE

Key dates

• Filing date: Oct 9, 2001
• Grant date: Nov 16, 2004
• Expiry date: Oct 9, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249953
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A sheetlike article comprising a single-layer homogenous matrix containing at least one active substance such as a crop protection agent, biocide, fertilizer, plant strengthener, cosmetic substance or fragrance, is produced by applying the at least one active substance to at least one of two layers of identical composition, placing the two layers atop one another so as to enclose the at least one active substance, irreversibly joining the layers with the at least one active substance therebetween under pressure to form a laminate and storing the laminate under defined conditions for a duration sufficient to effect migration of the at least one active substance into the base layer and connection of the layers at their interfaces.