Tubular glass fiber package and method
US4467916A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1982 |
| Grant date | Aug 28, 1984 |
| Priority date | — |
| Expiry date | Apr 26, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/31
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A package of wound glass fiber strand from which the glass fiber strands can be removed more efficiently for feeding into processing operations. The wound package of glass fiber strand is a package of superimposed annular layers of glass fiber strands having a central longitudinal, cylindrical cavity about which the strands are wound and having an outer cylindrical surface and a substantially flat circular top and bottom section. This package is covered with a stretchable polymeric film having a stiffness modulus of at least 1200 pounds/square inch and an elongation of about at least 5 and a thickness of about 0.75 to about 10 mils. The stretchable polymeric film is stretched around the package of glass fiber strands with a force greater than 4 pounds (18 Newtons) to stretch the film to cover the outer peripheral, cylindrical portion and to extend at least 0.5 inches (1.27 cm.) radially onto the top and bottom flat circular portions of the package. The polymeric film is stretched around the package for one or more wraps. The method of producing the wrapped package includes preparing a package of glass fiber strands wound in superimposed annular layers to have a central longitudinal…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.