NO783917L - Fremgangsmaate for fremstilling av ventilpose - Google Patents
Fremgangsmaate for fremstilling av ventilposeInfo
- Publication number
- NO783917L NO783917L NO783917A NO783917A NO783917L NO 783917 L NO783917 L NO 783917L NO 783917 A NO783917 A NO 783917A NO 783917 A NO783917 A NO 783917A NO 783917 L NO783917 L NO 783917L
- Authority
- NO
- Norway
- Prior art keywords
- bag
- opening
- fold
- tube
- weakened area
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 239000000463 material Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000003313 weakening effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 9
- -1 polyethylene Polymers 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Making Paper Articles (AREA)
- Bag Frames (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB48814/77A GB1590326A (en) | 1977-11-23 | 1977-11-23 | Valve sacks and methods of making them |
| GB1153578 | 1978-03-23 | ||
| GB4881478 | 1978-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO783917L true NO783917L (no) | 1979-05-25 |
Family
ID=27256694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO783917A NO783917L (no) | 1977-11-23 | 1978-11-21 | Fremgangsmaate for fremstilling av ventilpose |
Country Status (2)
| Country | Link |
|---|---|
| IT (1) | IT1106355B (it) |
| NO (1) | NO783917L (it) |
-
1978
- 1978-11-21 NO NO783917A patent/NO783917L/no unknown
- 1978-11-22 IT IT5201078A patent/IT1106355B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| IT7852010A0 (it) | 1978-11-22 |
| IT1106355B (it) | 1985-11-11 |
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