Medical bag and method for preparing the same
US4836691A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1988 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Mar 2, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S493/929
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A medical bag and method of manufacturing the bag from a thermoplastic resin by irradiating a ferromagnetic heating element which has been prepositioned between the mouth and receiving portions of the bag and which is caused to generate high frequence-induced heat. During subjection of the heating element to a high frequency magnetic field, the mouth portion and receiving portion of the bag melt about the element so that mouth portion, element and receiving portion are bonded together. This technique can also be suitably used for thermoplastic resins, for example, polyolefin resins, to which conventional high-frequency bonding cannot be applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.