Claims
- 1. In a method of manufacturing a container having an outer container tube of cardboard or similar stiff material and a lining of plastic or any other easily formable material provided in the said outer container tube, one end of the container exposing an openable lining side and the opposite end intended to be filled and closed, the steps of: providing a tubular outer container blank having bottom close flaps, the combined surface of which is at least as large as the bottom surface of the container and top flaps, and the total surface of which is substantially less than the cross sectional area of the container, providing a separate linking blank in the form of an open lining blank, introducing the lining blank into the outer container blank so that the upper side thereof is positioned at or adjacent the upper edge of the container blank, pressing the lining blank from the openable side back some distance into itself to provide a lining rib extending round the openable side, and securing the lining blank in the outer container blank by folding the top flaps of the outer container blank in and securing them to the said lining rib.
- 2. A method according to claim 1, characterized in that the lining blank is opened to intended form by means of an expandable mandrel whereby triangular lining ears are formed which are folded back along the sides of the lining blank as the lining blank is introduced in the outer container blank, and after the lining blank is introduced in the outer container blank the expandable mandrel is removed from the lining blank and the outer container blank with the lining blank is mounted in a cartridge for holding the container during the continued handling thereof.
- 3. A method according to claim 1 or 2, characterized in that the formation of the lining rib is made by introducing a mandrel in the lining blank, which mandel is formed with a projecting rib extending round the upper end of the mandrel, and the lining rib is formed about the said mandrel rib in that the lining material is pressed down into the space inside the mandrel rib from outside.
- 4. A method according to claim 1, characterized in that the lining rib is secured in the outer container blank between the top flaps and the sides of said outer container blank.
- 5. A method according to claim 4, characterized in that the lining rib is secured in the outer container blank by means of a glue joint.
- 6. A method according to claim 1, characterized in that the lining blank is introduced so far in the outer container blank and that the openable side of the lining blank is pressed down so far into the lining itself that the upper edge of the lining rib is positioned some distance below the upper edge of the outer container blank.
- 7. A method according to claim 1, characterized in that the lining blank is introduced so far in the outer container blank that the upper side thereof is positioned above the upper edge of the outer container blank, whereupon the openable side of the lining is pressed down so far into the lining itself that the upper edge of the lining rib is positioned at or under the upper edge of the outer container blank.
- 8. A method according to claim 1, characterized in that a mandrel for forming the lining rib is introduced in the lining to a level somewhat under side of the lining blank, whereby the lining blank is stretched about a mandrel rib thereby providing the lining rib when the openable side of the lining is pressed down into the space inside the mandrel rib.
- 9. A method according to claim 1, characterized in that the lining blank is secured in the outer container blank by dots at one or more points before the openable side of the lining blank is pressed back.
- 10. A method according to claim 1, characterized in that the two layers of lining blank material forming the lining rib are welded together at points, rib portions or by a continuous string before the top flaps of the outer container blank are folded down and are secured to the lining rib.
- 11. A method according to claim 1, characterized in that the lining blank is introduced in the outer container blank by means of a fixed mandrel, and the lining blank is kept in its position in the outer container blank, whereupon a fixed mandrel is withdrawn and an expandable mandrel is introduced in the lining blank and the said expandable mandrel is expanded after it is completely introduced in the lining blank, and after the openable side of the lining is pressed back into the lining itself the expandable mandrel is pulled up some distance of the lining blank while being retracted to its non-expanded position, whereupon the mandrel is completely withdrawn from the lining blank.
- 12. A method according to claim 11, characterized in that the openable side of the lining blank is kept stretched between an inner spring actuated press plate and a piston acting from outside during the first stage of the withdrawl and de-expansion of the expandable mandrel after the lining rib is formed.
- 13. A method according to claim 11 or 12, characterized in that the lining blank is kept in an expanded position by means of a number of holder arms engaging the upper edge of the lining blank during the action of the expandable mandrel in the lining blank.
- 14. A method according to claim 11, or 12, characterized in that the top flaps of the outer container blank are folded out along the sides of the outer container blank after the openable side of the lining blank is pressed back into the lining blank itself and while the outer container blank is moved through a glue mold and down into a glue bath so that a string of glue is applied along and on both sides of the upper edge of the outer container blank, whereupon the top flaps are folded in thereby enclosing the lining rib between the top flaps and the sides of the outer container blank.
Priority Claims (2)
Number |
Date |
Country |
Kind |
008068 |
Jan 1977 |
SEX |
|
028991 |
Mar 1977 |
SEX |
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Parent Case Info
This is a division, of application Ser. No. 871,497 filed Jan. 23, 1978, now U.S. Pat. No. 4,184,608.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3395623 |
Baker |
Aug 1968 |
|
3459357 |
Egger et al. |
Aug 1969 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
1801023 |
Apr 1970 |
DEX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
871497 |
Jan 1978 |
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