| 摘要 |
The invention is in an improved packaging tube and the packages, containing product, made therefrom. The packaging is suitable for holding products containing substantial fractions of cyanoacrylate-type components. The invention depends on the use of special multiple layer sheet material for the tube sidewall and a covering strip over the inside surface of the tube longtitudinal sideseam. A layer of high density polyethylene is positioned on the inside surface of the tube, such that it is the surface in direct contact with the product. A primer layer having a Lewis base-type component, such as polyethylene imine, is between the surface of the high density polyethylene layer which is disposed away from the product and subsequent layers which may be susceptible to interaction with the product. Preferred embodiments of the package use sheet materials having additional layers to provide barrier, heat sealability, and abuse resistance properties, and the necessary adhesive materials to hold the various layers of the structure together with good adhesion. Additional layers are contemplated. The covering strip is high density polyethylene, and it covers and protects the edge of the sheet material on the inside of the package at the tube longitudinal sideseam. |
