EP2679511A1 - Sac en raphia - Google Patents
Sac en raphia Download PDFInfo
- Publication number
- EP2679511A1 EP2679511A1 EP13003175.0A EP13003175A EP2679511A1 EP 2679511 A1 EP2679511 A1 EP 2679511A1 EP 13003175 A EP13003175 A EP 13003175A EP 2679511 A1 EP2679511 A1 EP 2679511A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sack
- raffia
- band
- folding
- forming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 229920000098 polyolefin Polymers 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000005304 joining Methods 0.000 description 5
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 230000005923 long-lasting effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/02—Local reinforcements or stiffening inserts, e.g. wires, strings, strips or frames
Definitions
- the object of the present invention is a raffia sack of the type used for storing purposes and/or for transport of granulated or powdery materials, which features a novel manufacturing process that makes it more economical whilst maintaining or improving its qualities.
- Sacks have been used since antiquity for the storage of substances, such as grain and powdery materials.
- the discovery of plastics meant their immediate incorporation as base material for forming sacks.
- raffia is a resistant and coarse fiber used in the ropemaking industry and in woven items. To the extent that raffia provides a resistant and long-lasting fabric that does not suffer deformation it is perfect for making sheets that will become the base for sacks meant to be resistant.
- raffia is made of net-shaped braided polypropylene (PP). And the sacks made from a sheet of this material are stitched to form its joinings.
- PP polypropylene
- the main object of the present invention is the manufacture of a resistant and long-lasting raffia sack, through thermal welding, having low manufacturing costs.
- the present invention describes a raffia sack, of the type used to preferably store granulated and/or powdery materials in which the raffia sheet incorporates a polyolefin outer coating.
- This new raffia sheet provided with an outer polyolefin coating is folded to form a tube having a side bellows.
- the bottom is folded on itself and pre-welded with some temperature, there being added a raffia strip that secures both closing and welding through thermal welding.
- the sack is efficient and resistant because the thermal welding performed provides great airtightness.
- the sack is economical because in its manufacture costly stitching operations are dispensed with, thereby it being obtained a final product featuring at least comparable consistency and resistance.
- the present invention is a raffia sack of the type used to preferably store granulated and/or powdery substances, said sack (1) featuring a polyolefin outer coating.
- This coating provides the sack with properties that are necessary to properly take part in the process of formation thereof under the present invention.
- the polyolefin layer applied on the outer surfaces of the raffia sack allows it to display a good behaviour during thermal welding, thereby facilitating the joining of its ends.
- this outer polyolefin layer permits serigraphy and/or printing of legends and drawings with excellent finish quality.
- the base material is a raffia sheet provided with a polyolefin outer coating.
- This sheet is folded and joined together by the ends thereof by means of a weld (2) in a process known as tubing that results in a tube having a side bellows (3).
- the main technical problem to be overcome by the invention is avoiding stitching or gluing to obtain the sack bottom. This is attained, as shown in figures 2 and 3 , by means of the folding and welding described below.
- the tube obtained from the aforesaid tubing, figure 1 is by means of a fold (4) turned on itself on its bottom and then thermal pre-welding (5) is performed.
- a band (6), also made of raffia, is then added at the joining area of the end of the hem obtained from said folding and the body of the sack and, subsequently, the bottom of the sack is thermally welded, as illustrated in said figures 2 and 3 .
- the dotted line in said figure 3 shows the side bellows of the sack, the folding (4) on the bottom of the sack, the pre-welding (5) thereof and the welded band (6).
- a sack whose simple manufacture avoids complicated and costly stitching operations, even gluing, by using thermal welding on the raffia material.
- the joinings forming the sack are very resistant and allow to store loads at least equivalent o even heavier than those to which conventional sacks are subjected.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201200620 | 2012-06-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2679511A1 true EP2679511A1 (fr) | 2014-01-01 |
Family
ID=48747277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13003175.0A Withdrawn EP2679511A1 (fr) | 2012-06-25 | 2013-06-21 | Sac en raphia |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP2679511A1 (fr) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3567111A (en) * | 1969-04-24 | 1971-03-02 | Int Paper Co | Multiply paper bag |
| WO1995030598A1 (fr) * | 1994-05-04 | 1995-11-16 | Starlinger & Co. Gesellschaft Mbh | Sac en tissu de polymere, notamment de polyolefine, et son procede de fabrication |
| US20040136622A1 (en) * | 2002-12-13 | 2004-07-15 | Yoshiki Shigeta | Gusseted bag |
| US20050084185A1 (en) * | 2003-10-15 | 2005-04-21 | Moon Byung J. | Synthetic resin bag for grain or feed |
| WO2006125585A1 (fr) * | 2005-05-25 | 2006-11-30 | Windmöller & Hölscher Kg | Sac a soufflets lateraux comportant une base enroulee |
| US20070292053A1 (en) * | 2006-06-15 | 2007-12-20 | Standard Multiwall Bag Manufacturing Co. | Polywoven pinch bottom open mouth bag |
-
2013
- 2013-06-21 EP EP13003175.0A patent/EP2679511A1/fr not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3567111A (en) * | 1969-04-24 | 1971-03-02 | Int Paper Co | Multiply paper bag |
| WO1995030598A1 (fr) * | 1994-05-04 | 1995-11-16 | Starlinger & Co. Gesellschaft Mbh | Sac en tissu de polymere, notamment de polyolefine, et son procede de fabrication |
| US20040136622A1 (en) * | 2002-12-13 | 2004-07-15 | Yoshiki Shigeta | Gusseted bag |
| US20050084185A1 (en) * | 2003-10-15 | 2005-04-21 | Moon Byung J. | Synthetic resin bag for grain or feed |
| WO2006125585A1 (fr) * | 2005-05-25 | 2006-11-30 | Windmöller & Hölscher Kg | Sac a soufflets lateraux comportant une base enroulee |
| US20070292053A1 (en) * | 2006-06-15 | 2007-12-20 | Standard Multiwall Bag Manufacturing Co. | Polywoven pinch bottom open mouth bag |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20140307987A1 (en) | Bag with thermal welded back seam | |
| US4637063A (en) | Reclosable bag with sealed laminated liner and method | |
| US8961012B2 (en) | Bag with handle | |
| CN105143053B (zh) | 用于灌装敞口袋的包装机以及方法 | |
| US20160145008A1 (en) | Side fold sack with roll bottom | |
| US20130330028A1 (en) | Pinch Seal Fill And Open Shipping Sack | |
| US8097054B2 (en) | Dust filter bag | |
| US20180334291A1 (en) | Handle for bag, resulting bag, and method of making the same | |
| JP2016525968A5 (fr) | ||
| US9926107B2 (en) | Side-gusset bag made of a plastic film/fabric laminate | |
| US20100209022A1 (en) | Ultrasonic double fold seal | |
| RU2008152030A (ru) | Усовершенствованный пластиковый сетчатый пакет | |
| US20150078684A1 (en) | Side-gusset bag made of a plastic film/fabric laminate | |
| US2409621A (en) | Method of closing bag tube ends | |
| EP2679511A1 (fr) | Sac en raphia | |
| TW202019779A (zh) | 製造儲存袋之方法及裝置與儲存袋 | |
| TWI538855B (zh) | A seamless bag and a method for manufacturing the same | |
| US3680769A (en) | Method of manufacture of plastic bags and the improved bags resulting therefrom | |
| CN104691980A (zh) | 带缓冲气囊的复合式铁路运输内衬包装袋及其生产方法 | |
| CN103987634A (zh) | 用于制造大容量柔性容器的方法、所得的柔性容器、对应的包装物 | |
| JP2017206296A (ja) | 自立性包装袋 | |
| CA3068309C (fr) | Sac a structure de couture multicouche | |
| SU728706A3 (ru) | Складной мешок | |
| CN204979875U (zh) | 带有缓冲气囊的单层热合式铁路运输专用内衬包装袋 | |
| KR20180002636U (ko) | 팽창 방지형 대용량 포대 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| AX | Request for extension of the european patent |
Extension state: BA ME |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20140702 |