Method for the production of a tube with a multi-layer tube head and a tube made of a pipe element having at least one plastic layer and a multi-layer tube head
US5292034A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 1991 |
| Grant date | Mar 8, 1994 |
| Priority date | — |
| Expiry date | Nov 25, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2023/20
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for the production of tubes from a prefinished pipe element, by pressing of heated plastic blanks to form a multi-layer tube head, with simultaneous bonding of the tube head to the pipe element. According to the invention, each layer of the multi-layer tube head is produced individually, by pressing of a newly introduced plastic blank in each case, where the next blank for the subsequent layer is not introduced and pressed until after the layer previously produced is stable in shape. The invention also relates to a tube made of a pipe element (1) having at least one plastic layer, and a multi-layer tube head (2) molded on by pressing heated plastic blanks, with a neck part (8) opening out centrally in a dispensing opening (9) with an outside thread (11) to screw on a closure cap, where according to the invention, each layer (3, 6, 5) of the multi-layer tube head (2) is pressed in individually, layer by layer, onto the upper end of the pipe element (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.