Composite film bags for packaging
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 25, 1997
Issued Date -
N/A
app pub date -
Dec 28, 1995
filing date -
Jan 25, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A composite film bag 1 for packaging comprises a composite film of a water-insoluble film 2 and a water-soluble polyvinyl alcohol film 3 which are adhered to one another to such an extent that the former film 2 can easily be peeled off from the latter film 3 and which are formed into a bag so that the water-insoluble film 2 serves as an outer layer of the bag and the water-soluble polyvinyl alcohol film 3 serves as an internal layer thereof. A powdery or liquid agricultural chemical agent 6 is packed in the composite film bag 1 and the opening of the bag is sealed. Upon practical use, the outer water-insoluble film 2 is peeled off to expose the internal film 3 and the internal film 3 as such, while containing the agricultural chemical agent 6, is introduced into water. Thus, the internal film is dissolved in water and in turn the content 6 thereof is released and accordingly dissolved in water. The composite film bag 1 is not broken at all even when it is exposed to a low temperature condition.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully