EP0148153A2 - Sac, procédé et machine pour sa fabrication - Google Patents

Sac, procédé et machine pour sa fabrication Download PDF

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Publication number
EP0148153A2
EP0148153A2 EP85100030A EP85100030A EP0148153A2 EP 0148153 A2 EP0148153 A2 EP 0148153A2 EP 85100030 A EP85100030 A EP 85100030A EP 85100030 A EP85100030 A EP 85100030A EP 0148153 A2 EP0148153 A2 EP 0148153A2
Authority
EP
European Patent Office
Prior art keywords
bag
fabric
band
cutting
fabric part
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Withdrawn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
EP85100030A
Other languages
German (de)
English (en)
Other versions
EP0148153A3 (fr
Inventor
André Robert Blanc
Beat J. Aregger
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.)
Tourpac Productions AG
Original Assignee
Tourpac Productions AG
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 Tourpac Productions AG filed Critical Tourpac Productions AG
Publication of EP0148153A2 publication Critical patent/EP0148153A2/fr
Publication of EP0148153A3 publication Critical patent/EP0148153A3/fr
Withdrawn legal-status Critical Current

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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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/804—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package
    • B65D85/808—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package for immersion in the liquid to release part or all of their contents, e.g. tea bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B29/00—Packaging of materials presenting special problems
    • B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
    • B65B29/028—Packaging of substances, e.g. tea, which are intended to be infused in the package packaging infusion material into filter bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting

Definitions

  • the invention relates to a bag, which consists of a piece of a liquid-permeable band material, filled with a portion of a particulate material and sealed by heat sealing, for brewing and boiling the material, a method and a machine for producing this bag.
  • Bags that are filled with a particulate material, from which components are detached by pouring, scalding and boiling, are known in many designs. In these bags, the goods are contained in a dosed portion and are held together even if they are immersed in a liquid for use. So that the substances to be dissolved, in particular the aroma substances contained in the material, completely pass into the liquid, it is necessary that the film material from which the bag is made is as permeable as possible.
  • the bags made of coated filter paper are used on a large scale, whereby the easy handling and the dosage that has already taken place are decisive.
  • the coated filter paper is not an ideal permeable material.
  • Other films have therefore also been used as the material for the production of the bags.
  • gauze Gauze is a light, loosely woven, mesh-like material that is particularly well suited for its permeability. This material is processed into bags by sewing them together on sewing machines. This type of production requires a relatively large number of personnel, since automatic production of the bags, as is the case when using coated filter paper, is not possible.
  • the bag is designed as a woven fabric part, in which the edge parts of the two bag sides lying on one another are connected to one another by means of a plastic adhesive.
  • Another object of the invention is to provide a method for producing the pouches according to the invention, with which the pouches can expediently be produced.
  • Another object of the invention is to provide a machine for carrying out the method according to the invention.
  • sealing rollers are provided with a coating which reduces the adhesion of the tape, preferably made of PTFE, which is followed by a cutting device with two cutting knives which are operated simultaneously and are used to cut the bag, the cutting position the cutting knife matches the position of the belt.
  • the invention is based on the consideration that it should be possible to achieve a completely mechanical production of the bag even when using a woven, gauze-shaped material.
  • the bag can be produced in the form shown in FIGS. 1 and 2.
  • This bag consists of a single piece of fabric 1, which is folded to form the two sides of the bag, but so, see Fig. 2, that the fabric part 1 forms a fold 2.
  • the fold 2 also forms the bottom-side bag section 3.
  • the bag can also be produced without a fold 2, but this depends on the content of the bag or on other factors.
  • the side bag parts are firmly connected to each other by means of a thermoplastic adhesive.
  • the upper bag section 8 opposite the bag section 3 on the bottom serves first as a filling opening and, after filling in the intended portion of a particulate material, is connected like the side bag sections 6, 7 by means of a thermoplastic adhesive.
  • FIG. 3 shows the same bag as in FIG. 1, but here a thread loop 9 is inserted in the upper part of the bag when the bag is closed, which is firmly anchored when the upper part of the bag 8 is closed.
  • the thread loop 9 is connected to a label 10 or the like with instructions. is printed.
  • the thread loop consists of two legs 11, 12 which are supplied in a label 10 'designed as a pocket and which can be pulled out when the bag is in use.
  • the fabric part 1 processed into the bag is a woven fabric with gauze-like properties.
  • the woven fabric part 1 can be made from natural fibers, for example cotton, wool or bast fibers, or from artificial fibers.
  • the advantage of using a woven fabric to make the pouches is that it can be made as a well permeable fabric. Such loosely woven fabric must be able to be glued perfectly at its edges. For this reason, it is necessary for the thermoplastic adhesive to be applied evenly and in precisely metered amounts to the fabric part 1 is applied. With correct dosing, the entire surface of the fabric part 1 can be coated without the permeability of the woven material being impaired.
  • the material part 1 is coated with the thermoplastic adhesive only at those points which form edge portions during the production of the bag and have to be connected to one another.
  • those parts of the fabric part 1 are to be coated with the adhesive, which form the side bag parts 6, 7 and the upper bag part 8. These parts represent only a fraction of the total area of the fabric part 1, so that such a partial coating results in a noticeable saving in the consumption of the thermoplastic adhesive.
  • Various methods can be used for the partial coating of the fabric part 1 or a fabric tape from which a larger number of fabric pieces or bags can be produced.
  • a pre-ground or sieved thermoplastic coating material is sprinkled on a preheated textile web, heated further in an oven and then completely adhered to the fabric band by roller pressure in a slightly liquid state.
  • an extruded net or a longitudinally slit film is spread out and attached to the preheated textile web.
  • a rotary screen printing process can also be used for a partial coating.
  • a thermoplastic powder mixed into a paste is doctored onto the fabric band, then melted and connected to the fabric band by roller pressure.
  • a particularly powerful method is the application of a melted thermoplastic adhesive by means of screen printing, with which any partial coatings can be carried out.
  • thermoplastic adhesive in powder form is used, which is knife-coated onto a roller provided with depressions.
  • the preheated fabric picks up the powder, which is further heated in a continuous furnace and then firmly attached to the fabric by means of roller pressure.
  • thermoplastic adhesives All adhesives that do not change in any way when the bag is used are suitable as thermoplastic adhesives. Suitable adhesives are e.g. Polyethylene, polyester or polyamides.
  • the bags are produced by machine in the manner described. However, it is also possible to use two fabric webs instead of a single fabric web and to bring these together to produce the bags.
  • Fig. 5 shows a machine as it can be used for the production of the described bags. It has surprisingly been found that the bags made from the woven tape are not on one Machine can be produced with which, for example, bags are made from filter paper. Additional facilities are required for this, as will be described below.
  • a labeling device 30 supplies a label for each bag which is labeled with a Thread loop is attached to the bag (Fig. 3 & 4).
  • the woven tape 26 running from the supply roll 20 is folded before entering the sealing station 18 and then guided between two sealing rollers 23, which are rotatably mounted in a housing 24 and are driven synchronously with the incoming tape 26.
  • the tape is first partially sealed by means of corresponding sealing webs 25 on the sealing rollers 23 to form a bag, which is then filled with a metered portion of a particulate material, whereupon an axially extending sealing web on the two sealing rollers 23 by sealing the upper edge
  • the bag closes and, if necessary, the thread loop is glued at the same time.
  • the known sealing rollers are not suitable for sealing bags from a woven tape. This difficulty can be solved by using coated sealing rollers, which can be used as a coating a coating which reduces the adhesion of the tape to the sealing rollers and which also withstands the sealing temperature of approx. 150 - 180 ° C.
  • a suitable material is, for example, PTFE.
  • an additional band tensioning device 27 - a first tensioning of the band 26 is achieved by braking the supply roll 20 by means of a weight 31 placed on a band over the supply roll 20 - in which a double-armed pivot lever 28 against the band by means of a weight 29 attached thereto 26 is pressed.
  • the band 26 leaving the sealing station 18 and sealed into bags is now broken down into the individual bags in a cutting device 19.
  • a cutting device which takes into account the special properties of the woven tape material and which is shown schematically in FIG. 6.
  • the cutting device 19 shown in FIG. 6 is driven by a main shaft 37 which is connected to the main drive for driving the various elements of the machine.
  • the main shaft has two oppositely arranged eccentric discs 38, 39, on the circumference of which a roller 40 is supported, which is arranged at the end of a bumper 42, 43 acted upon by the force of a spring 41.
  • the push rod 42 carries a cutting knife 35 and the push rod 43 carries a cutting knife 36.
  • the oppositely arranged eccentric discs 38, 39 make the cutting knives 35, 36 counter to the force of the springs 41 moved toward or away from each other. It is thereby achieved that the two cutting knives 35, 36 meet exactly on the passage plane 45 of the band 26 sealed into bags. This is the only way to achieve perfect cutting and therefore trouble-free operation.
  • Fig. 6 are indicated schematically with 46 bearing points, in which the main shaft 37 and the two bumpers 42, 43 are mounted.
  • the invention thus enables the economical use of bags made of gauze-like material to hold particulate material.
  • the economical manufacture of the bags is ensured by using special means with which the bags are reliably sealed and cut.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)
EP85100030A 1984-01-05 1985-01-02 Sac, procédé et machine pour sa fabrication Withdrawn EP0148153A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH44/84A CH663000A5 (de) 1984-01-05 1984-01-05 Beutel, verfahren und maschine zu dessen herstellung.
CH44/84 1984-01-05

Publications (2)

Publication Number Publication Date
EP0148153A2 true EP0148153A2 (fr) 1985-07-10
EP0148153A3 EP0148153A3 (fr) 1987-01-28

Family

ID=4178055

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85100030A Withdrawn EP0148153A3 (fr) 1984-01-05 1985-01-02 Sac, procédé et machine pour sa fabrication

Country Status (2)

Country Link
EP (1) EP0148153A3 (fr)
CH (1) CH663000A5 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1005328C2 (nl) * 1997-02-20 1998-08-24 Sara Lee De Nv Sachet met een enkele kamer.
EP1002742A1 (fr) * 1998-06-10 2000-05-24 Teepack Spezialmaschinen Gmbh & Co. Kg Sachet d'infusion à un seul compartiment, en particulier pour thé et procédé pour sa fabrication
WO2013174710A1 (fr) * 2012-05-22 2013-11-28 Unilever Plc Sachet pour infusion et sa fabrication
WO2021120338A1 (fr) * 2019-12-18 2021-06-24 奥美医疗用品股份有限公司 Ligne d'assemblage et procédé pour coudre un sac de tissu à paillettes sur une feuille de gaze
CN113665876A (zh) * 2020-05-12 2021-11-19 德国蒂派克(Teepack）包装设备有限公司 用于制造容纳在包装中的袋的设备

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2306399A (en) * 1940-05-17 1942-12-29 Millie Patent Holding Co Inc Packaging
US2571138A (en) * 1949-10-24 1951-10-16 Nat Urn Bag Co Inc Infusion package with expandible bottom and method of manufacture thereof
FR1071314A (fr) * 1952-12-18 1954-08-30 Pneumatic Scale Corp Procédé de fabrication de récipients et de sacs
CH333760A (fr) * 1956-11-01 1958-10-31 Rufenacht Robert Emballage

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1005328C2 (nl) * 1997-02-20 1998-08-24 Sara Lee De Nv Sachet met een enkele kamer.
EP0860375A1 (fr) * 1997-02-20 1998-08-26 Sara Lee/DE N.V. Sachet ayant une seule chambre
EP1002742A1 (fr) * 1998-06-10 2000-05-24 Teepack Spezialmaschinen Gmbh & Co. Kg Sachet d'infusion à un seul compartiment, en particulier pour thé et procédé pour sa fabrication
WO2013174710A1 (fr) * 2012-05-22 2013-11-28 Unilever Plc Sachet pour infusion et sa fabrication
CN104334466A (zh) * 2012-05-22 2015-02-04 荷兰联合利华有限公司 冲泡包装及其制造
EA031046B1 (ru) * 2012-05-22 2018-11-30 Юнилевер Н.В. Пакетик для настаивания и способ его изготовления
WO2021120338A1 (fr) * 2019-12-18 2021-06-24 奥美医疗用品股份有限公司 Ligne d'assemblage et procédé pour coudre un sac de tissu à paillettes sur une feuille de gaze
CN113665876A (zh) * 2020-05-12 2021-11-19 德国蒂派克(Teepack）包装设备有限公司 用于制造容纳在包装中的袋的设备

Also Published As

Publication number Publication date
EP0148153A3 (fr) 1987-01-28
CH663000A5 (de) 1987-11-13

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Inventor name: BLANC, ANDRE ROBERT

Inventor name: AREGGER, BEAT J.