Patent · US Expired

Process for the treatment of a sealable film surface

US5914079A · kind A · utility

7Cited by

12References

15Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Herbert Peiffer · Mainz, DE
Robert Schmidt · Eltville am Rhein, DE
Detlef Busch · Saarlouis, DE
Frank Ernst · Cleveland Heights, US

Key dates

Filing date	Mar 14, 1996
Grant date	Jun 22, 1999
Priority date	—
Expiry date	Mar 14, 2016

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29K2023/00
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

In the treatment of a sealable film surface by means of a flame, a film is passed over a cooling roll (4). A burner (1) is mounted above this cooling roll (4). An unpolarized flame is produced by means of this burner (1). The film is cooled by means of the cooling roll (4) and, if required, by means of additional cooling apparatuses so that the temperature of the flame-treated film surface on leaving the cooling roll (4) is not more than 25.degree. C.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.