EP2679511A1 - Raffiasack - Google Patents

Raffiasack Download PDF

Info

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Withdrawn
Application number
EP13003175.0A
Other languages
English (en)
French (fr)
Inventor
Eduardo Sarabia Rogina
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rafia Industrial SA
Original Assignee
Rafia Industrial SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rafia Industrial SA filed Critical Rafia Industrial SA
Publication of EP2679511A1 publication Critical patent/EP2679511A1/de
Withdrawn legal-status Critical Current

Links

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)
EP13003175.0A 2012-06-25 2013-06-21 Raffiasack Withdrawn EP2679511A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201200620 2012-06-25

Publications (1)

Publication Number Publication Date
EP2679511A1 true EP2679511A1 (de) 2014-01-01

Family

ID=48747277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13003175.0A Withdrawn EP2679511A1 (de) 2012-06-25 2013-06-21 Raffiasack

Country Status (1)

Country Link
EP (1) EP2679511A1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3567111A (en) * 1969-04-24 1971-03-02 Int Paper Co Multiply paper bag
WO1995030598A1 (de) * 1994-05-04 1995-11-16 Starlinger & Co. Gesellschaft Mbh Sack aus polymer-, insbesondere polyolefingewebe und verfahren zu seiner herstellung
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 (de) * 2005-05-25 2006-11-30 Windmöller & Hölscher Kg Seitenfaltensack mit rollboden
US20070292053A1 (en) * 2006-06-15 2007-12-20 Standard Multiwall Bag Manufacturing Co. Polywoven pinch bottom open mouth bag

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3567111A (en) * 1969-04-24 1971-03-02 Int Paper Co Multiply paper bag
WO1995030598A1 (de) * 1994-05-04 1995-11-16 Starlinger & Co. Gesellschaft Mbh Sack aus polymer-, insbesondere polyolefingewebe und verfahren zu seiner herstellung
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 (de) * 2005-05-25 2006-11-30 Windmöller & Hölscher Kg Seitenfaltensack mit rollboden
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
US10683140B2 (en) Produce container
US20140307987A1 (en) Bag with thermal welded back seam
US4637063A (en) Reclosable bag with sealed laminated liner and method
US20160145008A1 (en) Side fold sack with roll bottom
US20150125095A1 (en) Bag with handle
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 (de)
US20100209022A1 (en) Ultrasonic double fold seal
US9926107B2 (en) Side-gusset bag made of a plastic film/fabric laminate
RU2008152030A (ru) Усовершенствованный пластиковый сетчатый пакет
US20150078684A1 (en) Side-gusset bag made of a plastic film/fabric laminate
SE524755C2 (sv) Storsäck med sömlös botten samt metod för tillverkning av storsäck
US2409621A (en) Method of closing bag tube ends
EP2679511A1 (de) Raffiasack
TWI538855B (zh) A seamless bag and a method for manufacturing the same
TW202019779A (zh) 製造儲存袋之方法及裝置與儲存袋
US11492177B2 (en) Bag with multi-layer seam structure
US3680769A (en) Method of manufacture of plastic bags and the improved bags resulting therefrom
RU155861U1 (ru) Многослойный мешок
JP2017206296A (ja) 自立性包装袋
JP3219053U (ja) チャック付きポケット袋
SU728706A3 (ru) Складной мешок
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