BE560381A - - Google Patents

Info

Publication number
BE560381A
BE560381A BE560381DA BE560381A BE 560381 A BE560381 A BE 560381A BE 560381D A BE560381D A BE 560381DA BE 560381 A BE560381 A BE 560381A
Authority
BE
Belgium
Prior art keywords
container
discontinuous
filled
heat
walls
Prior art date
Application number
Other languages
French (fr)
Publication of BE560381A publication Critical patent/BE560381A/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/20Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/20Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5805Opening or contents-removing devices added or incorporated during package manufacture for tearing a side strip parallel and next to the edge, e.g. by means of a line of weakness
    • B65D75/5811Opening or contents-removing devices added or incorporated during package manufacture for tearing a side strip parallel and next to the edge, e.g. by means of a line of weakness and defining, after tearing, a small dispensing spout, a small orifice or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/38Impulse heating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/20Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/22Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns
    • B29C66/227Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns being in the form of repetitive interlocking undercuts, e.g. in the form of puzzle cuts
    • B29C66/2276Other specific local geometries of interlocking undercuts not provided for in B29C66/2272 - B29C66/2274
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81422General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being convex
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832Reciprocating joining or pressing tools
    • B29C66/8322Joining or pressing tools reciprocating along one axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2575/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D2575/52Details
    • B65D2575/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D2575/586Opening or contents-removing devices added or incorporated during package manufacture with means for reclosing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/40Packages formed by enclosing successive articles, or increments of material, in webs, e.g. folded or tubular webs, or by subdividing tubes filled with liquid, semi-liquid, or plastic materials
    • B65D75/44Individual packages cut from webs or tubes
    • B65D75/48Individual packages cut from webs or tubes containing liquids, semiliquids, or pastes, e.g. cushion-shaped packages

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

       

   <Desc/Clms Page number 1> 
 



   Les récipients de liquide scellés, constitués en ma- Lère pelliculaire thermosoudable souple, de faible épaisseur, a- aient jusqu'à présent le grand inconvénient de provoquer une éjec-' Lon indésirable du produit y renfermé lors de l'ouverture. En ef- et, ces récipients entièrement remplis, à l'exclusion même d'une ulle d'air, laissaient échapper involontairement, sous l'effet de a tension des parois, ne possédant pas de rigid.ité suffisante,      ne partie du produit emballé au moment même où, pour en libérer e contenu, on coupait un coin du récipient. Les récipicenbs   fabri   

 <Desc/Clms Page number 2> 

 qués selon l'invention ne présentent plus cet inconvénient.

   Les caractéristiques et le progrès réalisés ressortiront successivement de la description ci-après, accompagnée des dessins: 
La figure 1 représente un récipient constitué en ma- tière pelliculaire, ses deux longues soudures latérales inclinées formant son bord, étant élargies en 3 et 3' rapprochant en ces points les parois opposées du récipient qui y sont soudées l'une à l'autre, créant ainsi les deux espaces 2 et 4 qui ne sont reliés que par l'étroit passage d'intercommunication 5. L'espace du réci- pient peut être chargé de produit par son fond, celui-ci pouvant ê- tre scellé après le remplissage.

   Le récipient étant fabriqué à par- tir de matière souple, les parois de l'espace 4 se galberont sous le poids du produit y renfermé et l'on a constaté que l'espace 2 se trouvant au-delà du barrage 3-3' restera longtemps exempt du pro- duit fluide, les parois de cet espace 2, restant acollées l'une à l'autre, la pression atmosphérique extérieure y aidant - jusqu'au passage 5, et cela, même si l'on retourne le récipient avec son ori- fice ouvert vers le bas, parce que, selon l'invention, les passages du barrage 3-3' sont suffisamment réduits pour s'opposer, en coopé- ration avec la tension superficielle du produit fluide emballé, à l'écoulement involontaire. Pour l'en expulser, il sera nécessaire d'exercer une pression sur les parois du récipient. 



   La figure 2 représente un récipient de contour car- ré vu de front et en coupe. Ce récipient est également divisé en deux espaces 2 et 4 par le barrage qui est réalisé dans cet exemple par les points de soudure 3-3'-3" ménageant les passages d'inter- communication 5-5'- 5"- 5"' entre l'espace 2 et l'espace 4, ce dernier étant rempli du produit emballé. 



   La figure 3 représente un récipient constitué de deux feuilles soudées ensemble suivant les lignes du contour vu de front et en coupe, étant muni d'un goulot à la base duquel les parois sont mutuellement rapprochées et soudées ensemble en un en- 

 <Desc/Clms Page number 3> 

 droit isolé 3 créant deux passages d'intercommunication 5 et 5' reli' ant les deux espaces 2 et 4 ainsi formés. 



   Là aussi, les parois détendues de l'espace réduit 2, possédant is la forme d'un goulot, se continuent vers son extrémi- té ayant tendance à adhérer l'une à l'autre malgré les passages li- ' bres 5 - 5' qui relient le goulot à 2espace 4, celui-ci renfermant le produit fluide, parce que selon l'invention les passages sont si étroitement dimensionnés que la tension superficielle du produit fluide emballé s'oppose à son passage involontaire.

   L'opération de remplissage peut s'éffectuer par exemple par le fond du récipient ou encore, un certain nombre de tels récipients vidés qui communi- quent entre eux peut être aligné en chapelet pour'en être isolés après remplissage par des soudures transversales.Dans ce cas, pour ne pas gêner le remplissage en continu du chapelet, la soudure 3 pourra être appliquée en même temps que les soudures qui sépareront les récipients les uns des autres, ou même ultérieurement. 



   La figure 4 représente en perspective, un récipient possédant un goulot 2, portant à la base de celui-ci,   extérieuremen   une rondelle 7 élastique, munie d'une fente 6, pinçant les parois du goulot en lès serrant l'une contre l'autre, en séparant l'espace de celui-ci de l'espace 4 renfermant le produit emballé. Après avoir libéré le goulot en découpant son extrémité on exercera une    pression aux parois du récipient ; cettepression écartera la fente   6 qui se refermera grâce à l'élasticité de la rondelle 7, aussitôt que la pression aura cessé. 



   La figure 5 représente un boyau en matière thermo- soudable fabriqué par extrusion. Longeant un bord du boyau pincé, un barrage est créé par de nombreuses soudureµ. Les parois du boyau sont rapprochées et solidarisées,ensemble   dans   les endroits 9 tan- dis que les endroits 6 forment des étroits passages entre le grand espace 4 et   le.canal   latéral 2. De préférence, la solidarisation des parois en des endroits 9 sera réalisée en même temps que l'ex- 

 <Desc/Clms Page number 4> 

 trusion du boyau, avant son refroidissement définitif à l'aide d'un dispositif de serrage rotatif, non représenté dans le dessin, qui rapproche et solidarise ensemble par serrage les parois encore col- lantes du boyau en des endroits 9.

   L'air maintenu dans le boyau ve- nant d'être extrudé s'opposera à l'accolage de ses parois en des endroits 6 malgré l'espacement très réduit laissé entre les points 9 
On peut également former la ligne de barrage consti- tuée par les endroits 9 ultérieurement, à un moment quelconque, à l'aide de soudures, réalisés avec des matrices alimentées par exem- ple en courant à haute fréquence électronique ou chauffées par tout autre moyen connu. 



   On introduira facilement le produit fluide à embal- ler dans l'espace 4 du boyau ainsi préformé. En appliquant transver- salement à sa longueur des simples soudures linéaires 8 en des en- droits espacés, on divisera le boyau en des compartiments étanches 7, représentés à la figure 7. 



    @   
Grâce à leur tension superficielle, les produits fluides, introduits dans l'espace 4 du boyau, ne passeront pas li- brement par les endroits à l'autre côté du barrage discontinu cons- titué par les endroits espacés 9, la largeur des passages 6 étant judicieusement calculée et appropriée à la tension superficielle du produit fluide. De ce fait, le boyau ainsi rempli dans toute sa longueur, pouvant aller à plusieurs dizaines de mètres, contiendra dans l'espace 4 le produit fluide tandis que l'espace 2 renfermera de l'air tout au long du barrage discontinu. Il en sera de même dans les compartiments après la réalisation des soudures transversa- les 8. 



   On peut, si besoin, réaliser, parallèlement à la pre- mière, une seconde ligne de barrage discontinu, du côté opposé du boyau. 



   Pour expulser le produit fluide au moment de son uti lisation du récipient unitaire, on coupera partiellement ou entière- 

 <Desc/Clms Page number 5> 

 ment la zone étroite 2. Bien que les orifices soient ainsi libérés,   le produit fluide ne jaillira pas librement ; sera nécessaire   d'exercer une pression aux parois du récipient 7 pour en expulser le produit fluide. 



   Selon une variante, les parois de la gaine représen- tée en figure 8 sont aplaties et solidarisées ensemble sur une zone marginale'étroite dont le bord se trouvant du côté de l'espace 4 de la gaine poursuivra une ligne dentée, ménageant des passages 6. 



   Leur largeur est judicieusement appropriée à la tension superficiel- le du produit fluide à emballer. Ce dernier-sera introduit dans la gaine ainsi préformée, pouvant atteindre une longueur considérable. 



   Après son remplissage on appliquera des soudures transversales'en des endroits espacés afin.de diviser la gaine remplie en des com- partiments unitaires hermétiquement scellés, dont l'un est illustré   @   en figure 9. Pour en libérer le produit fluide emballé, on découpera la zone aplatie selon'une ligne traversant le contour denté. Comme représenté àla figure 10, on obtiendra ainsi une rangée de petits orifices ayant la même fonction que ceux de l'exemple précédent. 



   La zone marginale dentée peut être créée pendant l'extrusion de la gaine par pincement et solidarisation des parois encore collantes ou bien à un moment ultérieur quelconque au moyen de soudures à l'aide de matrices soudantes. 



   Suivant une forme de réalisation avantageuse, le pro- cédé consiste à¯compartimenter une ébauche souple en matière thermo- soudable afin d'y renfermer une substance fluide dont l'ébauche est remplie, à l'aide de soudures en des endroits espacés, ces soudure de scellage étant accompagnées de zones de soudure qui sont inter- rompues en plusieurs endroits. 



   Au moment de l'introduction de la substance fluide qui peut s'effectuer   par tout   moyen adéquat, celle-ci pourra libre-' ment pénétrer dans l'ébauche souple et thermosoudable, ne rencontra, aucun obstacle transversal à son passage, étant donné que les sou- dures discontinues n'y seront appliquées qu'après remplissage. 

 <Desc/Clms Page number 6> 

 



   Pour réaliser avantageusement les soudures de scel-      lage transversales, accompagnées de soudures discontinues, on uti- lisera suivant l'invention, des mâchoires, accusant à leur côté soudant, une face continue, voisinant avec une surface discontinue interrompue en plusieurs points, ces deux faces soudantes très rap- prochées n'étant écartées l'une de l'autre que de quelques milli- mètres. 



   Afin d'accomplir les soudures, les mâchoires de sou- dage pourront être chauffées soit en permanence par une résistance électrique, soit par impulsions de chaleur; elles peuvent aussi re- présenter des électrodes alimentées en courant à haute fréquence par un générateur électronique ou encore, fonctionner par tout au- tre procédé de soudage adéquat. 



   Afin de mieux faire comprendre ce procédé, l'on a représenté aux dessins annexés : à la figure 11, une paire de mâchoires de soudage en position desserrée, vue en perspective et à la figure 12, plusieurs récipients remplis et scel- lés, vus en plan, fabriqués à partir d'une gaine tubulaire extrudée, 
Les faces soudantes 11 et 12 présentent une surface continue, servant à créer des compartiments étanches à partir d'une ébauche tubulaire thermosoudable (non représentée) et remplie au préalable d'une substance fluide, en appliquant des soudures de scellage transversales par rapprochement et   solidarisation   par sou- dage des parois opposées de l'ébauche tubulaire. 



   Les faces de scellage 11 et 12 sont longées par des mâchoires 13,celles-ci présentant une face soudante discontinue de manière que les parois opposées de l'ébauche thermosoudable intro- duite entre les mâchoires, déjà remplie de la substance fluide, ne seront rapprochées et solidarisées par soudage que dans les endroits subissant le serrage des nombreuses dents 15 tandis que les en- droits   1'6 ne   provoqu a n t, pas de soudure ménageront les passages 6 

 <Desc/Clms Page number 7> 

 pour la substance fluide, pouvant passer du corps 7 du récipient (figure 12) jusqu'à la soudure de scellage 8. Chaque mâchoire peut être réalisée', comme représenté à la figure 1, dans une pièce mas- sive où le canal 14 est creùsé par exemple par fraisage.

   Il est évident que l'on peut obtenir le même résultat par assemblage de ' plusieurs pièces préalablement usinées. Notamment, on peut réaliser les mâchoires soudantes de manière que la face 13 pourra coulisser dans le sens vertical. Ainsi,   selôn   la composition et la Viscosité ' de la substance fluide à 'conditionner, la mâchoire 13 pourra exer- cer le serrage aux parois de l'ébauche thermosoudable déjà remplie, avant, pendant ou après le scellage accompli par.la mâchoire 11. 



   Selon l'invention, à chaque opération l'on   effectue   conjointement deux soudures très rapprochées, l'une réalisant le scellage étanche des parois de l'ébauche tubulaire, l'autre = qui en est légèrement écartée - présentant une soudure en ligne discon- tinue permettant à la'substance fluide le passage en plusieurs en- droits. 



   Dans la pratique, la soudure de scellage 8 sera plus 'large que la soudure discontinue 9 parce que les compartiments créés par les soudures successives seront détachés les uns des au- tres par découpage par le milieu de la soudure 8., 
En réalisant conjointement la soudure continue de séparation 8 avec la soudure discontinue 9, on obtient avec une ré- gularité constante le bon positionnement réciproque des soudures continues et discontinues, ce positionnement étant primordial pour le résultat désiré, c'est-à-dire : une vidange facile du récipient tout en évitant un giclement de la substance fluide y renfermée au moment de l'ouverture du récipient au-delà de la ligne discontinue. 



   Le procédé permet d'utiliser avantageusement dès é- bauches sans aucune soudure antérieure au remplissage. Ainsi on élit mine toutes les difficultés de repérage qui se présenteraient dès que l'on-devrait concorder ultérieurement à l'aide d'un guidage mini tieux, d'une part les soudures de scellage avec, d'autre part, les soudures de barrage discontinues, indépendamment exécutées.



   <Desc / Clms Page number 1>
 



   Sealed liquid containers, made of flexible heat-sealable film material of low thickness, have heretofore had the great disadvantage of causing unwanted ejection of the product contained therein upon opening. In fact, these fully filled containers, even excluding an ulle of air, involuntarily let escape, under the effect of the tension of the walls, not having sufficient rigidity, part of the product packaged at the very moment when, to release its contents, a corner of the container was cut. The receptacles fabri

 <Desc / Clms Page number 2>

 qués according to the invention no longer have this drawback.

   The characteristics and the progress achieved will emerge successively from the description below, accompanied by the drawings:
Figure 1 shows a container made of film, its two long inclined lateral welds forming its edge, being widened at 3 and 3 'bringing together at these points the opposite walls of the container which are welded to one another therein. , thus creating the two spaces 2 and 4 which are only connected by the narrow intercommunication passage 5. The space of the receptacle can be loaded with product by its bottom, this one being able to be sealed after the filling.

   The container being made from flexible material, the walls of the space 4 will curve under the weight of the product contained therein and it has been observed that the space 2 being beyond the barrier 3-3 ' will remain free of the fluid product for a long time, the walls of this space 2 remaining stuck to each other, the external atmospheric pressure aiding there - until passage 5, and this, even if the container is inverted with its orifice open downwards, because, according to the invention, the passages of the barrier 3-3 'are sufficiently reduced to oppose, in cooperation with the surface tension of the packaged fluid product, the involuntary discharge. To expel it, it will be necessary to exert pressure on the walls of the container.



   FIG. 2 shows a container with a square outline seen from the front and in section. This receptacle is also divided into two spaces 2 and 4 by the barrier which is made in this example by the welds 3-3'-3 "leaving the intercommunication passages 5-5'- 5" - 5 " 'between space 2 and space 4, the latter being filled with the packaged product.



   Figure 3 shows a container consisting of two sheets welded together along the lines of the contour seen from the front and in section, being provided with a neck at the base of which the walls are reciprocated and welded together in one en-

 <Desc / Clms Page number 3>

 isolated right 3 creating two intercommunication passages 5 and 5 'connecting' the two spaces 2 and 4 thus formed.



   Here too, the relaxed walls of the reduced space 2, having the shape of a neck, continue towards its end having a tendency to adhere to one another despite the free passages 5 - 5. 'which connect the neck to 2space 4, the latter enclosing the fluid product, because according to the invention the passages are so closely dimensioned that the surface tension of the packaged fluid product opposes its involuntary passage.

   The filling operation can be carried out, for example, from the bottom of the receptacle or else, a certain number of such emptied receptacles which communicate with one another can be aligned in a string so as to be isolated therefrom after filling by transverse welds. in this case, so as not to hinder the continuous filling of the string, the weld 3 can be applied at the same time as the welds which will separate the containers from one another, or even subsequently.



   Figure 4 shows in perspective, a container having a neck 2, carrying at the base thereof, externally an elastic washer 7, provided with a slot 6, clamping the walls of the neck by pressing them against each other. other, by separating the space thereof from the space 4 containing the packaged product. After having released the neck by cutting its end, pressure will be exerted on the walls of the container; this pressure will move the slot 6 which will close again thanks to the elasticity of the washer 7, as soon as the pressure has ceased.



   Figure 5 shows a hose of heat-sealable material manufactured by extrusion. Along one edge of the pinched gut, a dam is created by numerous welds. The walls of the hose are brought together and joined together in the places 9 while the places 6 form narrow passages between the large space 4 and the side channel 2. Preferably, the walls are joined in places 9. at the same time as the ex-

 <Desc / Clms Page number 4>

 trusion of the casing, before its final cooling using a rotary clamping device, not shown in the drawing, which brings together and secures together by clamping the still sticky walls of the casing in places 9.

   The air retained in the hose which has just been extruded will oppose the joining of its walls in places 6 despite the very small space left between the points 9
It is also possible to form the barrier line formed by the places 9 subsequently, at any time, by means of welds, produced with dies supplied for example with current at high electronic frequency or heated by any other means. known.



   The fluid product to be packaged will easily be introduced into the space 4 of the hose thus preformed. By applying across its length simple linear welds 8 in spaced places, the hose will be divided into sealed compartments 7, shown in FIG. 7.



    @
Thanks to their surface tension, the fluid products, introduced into the space 4 of the hose, will not pass freely through the places on the other side of the discontinuous dam formed by the spaced places 9, the width of the passages 6 being judiciously calculated and appropriate to the surface tension of the fluid. As a result, the hose thus filled in its entire length, which may extend to several tens of meters, will contain the fluid in space 4, while space 2 will contain air throughout the discontinuous dam. The same will apply in the compartments after the transverse welds have been made 8.



   It is possible, if necessary, to make, parallel to the first, a second discontinuous barrier line, on the opposite side of the hose.



   To expel the fluid at the time of its use from the unitary container, it will be partially or entirely cut.

 <Desc / Clms Page number 5>

 ment the narrow zone 2. Although the orifices are thus freed, the fluid product will not spurt out freely; It will be necessary to exert pressure on the walls of the container 7 in order to expel the fluid therefrom.



   According to a variant, the walls of the sheath shown in FIG. 8 are flattened and joined together on a narrow marginal zone, the edge of which, located on the side of the space 4 of the sheath, will continue in a toothed line, leaving passages 6. .



   Their width is suitably suited to the surface tension of the fluid product to be packaged. The latter will be introduced into the thus preformed sheath, which can reach a considerable length.



   After filling, transverse welds will be applied in spaced places in order to divide the filled sheath into hermetically sealed unit compartments, one of which is illustrated in FIG. 9. To release the packed fluid product therefrom, it will be cut. the area flattened along a line crossing the toothed contour. As shown in FIG. 10, a row of small orifices will thus be obtained having the same function as those of the previous example.



   The toothed marginal zone can be created during the extrusion of the sheath by pinching and securing the still sticky walls or else at any later time by means of welds using welding dies.



   According to an advantageous embodiment, the method consists in compartmentalizing a flexible blank of heat-sealable material in order to contain therein a fluid substance with which the blank is filled, using welds at spaced places, these sealing weld being accompanied by weld zones which are interrupted in several places.



   When the fluid substance is introduced, which can be carried out by any suitable means, it can freely penetrate into the flexible and heat-sealable blank, encountering no transverse obstacle in its passage, given that discontinuous welds will only be applied after filling.

 <Desc / Clms Page number 6>

 



   To advantageously produce the transverse sealing welds, accompanied by discontinuous welds, jaws will be used according to the invention, showing at their welding side a continuous face, adjacent to a discontinuous surface interrupted at several points, these two very close welding faces being spaced apart by only a few millimeters.



   In order to perform the welds, the welding jaws can be heated either continuously by an electric resistance or by heat pulses; they can also represent electrodes supplied with current at high frequency by an electronic generator or even operate by any other suitable welding process.



   In order to make this process easier to understand, the accompanying drawings have shown: in FIG. 11, a pair of welding jaws in the released position, seen in perspective and in FIG. 12, several filled and sealed containers, seen in plan, made from an extruded tubular sheath,
The welding faces 11 and 12 have a continuous surface, serving to create sealed compartments from a heat-weldable tubular blank (not shown) and filled beforehand with a fluid substance, by applying transverse sealing welds by bringing together and joining. by welding the opposite walls of the tubular blank.



   The sealing faces 11 and 12 are bordered by jaws 13, these having a discontinuous welding face so that the opposite walls of the heat-sealable blank inserted between the jaws, already filled with the fluid substance, will not be brought together. and secured by welding only in the places undergoing the clamping of the numerous teeth 15 while the places 1'6 do not cause welding, no welding will spare the passages 6

 <Desc / Clms Page number 7>

 for the fluid substance, being able to pass from the body 7 of the container (figure 12) to the sealing weld 8. Each jaw can be produced ', as shown in figure 1, in a massive part where the channel 14 is creùsé for example by milling.

   It is obvious that the same result can be obtained by assembling several previously machined parts. In particular, the welding jaws can be made so that the face 13 can slide in the vertical direction. Thus, depending on the composition and the viscosity of the fluid substance to be packaged, the jaw 13 will be able to exert the clamping to the walls of the heat-sealable blank already filled, before, during or after the sealing carried out by the jaw 11.



   According to the invention, for each operation, two very close welds are carried out jointly, one providing the airtight sealing of the walls of the tubular blank, the other = which is slightly apart from it - presenting a disconnected line weld tinue allowing the fluid substance to pass through several places.



   In practice, the sealing weld 8 will be wider than the discontinuous weld 9 because the compartments created by the successive welds will be detached from each other by cutting through the middle of the weld 8.,
By carrying out the continuous separation weld 8 with the discontinuous weld 9, one obtains with constant regularity the good reciprocal positioning of the continuous and discontinuous welds, this positioning being essential for the desired result, that is to say: easy emptying of the container while avoiding squirting of the fluid substance contained therein when opening the container beyond the broken line.



   The method advantageously makes it possible to use blanks without any welding prior to filling. This eliminates all the identification difficulties that would arise as soon as one-should subsequently agree with the aid of a mini guide, on the one hand the sealing welds with, on the other hand, the welds of discontinuous dam, independently executed.


    

Claims (1)

REVENDICATIONS ---------------- 1. Récipient souple en matière thermosoudable, caractéri- sé par une zone discontinue ou poursuivant une ligne dentée, fot- mant un ou plusieurs passages, lesquels, une fois libérés, servent d'orifices de vidage qui, pris individuellement, possèdent un pas- sage suffisamment réduit pour s'opposer, en coopération avec la tension superficielle du produit fluide emballé dans le récipient, à l'écoulement involontaire du produit. CLAIMS ---------------- 1. Flexible container in heat-sealable material, characterized by a discontinuous zone or following a toothed line, forming one or more passages, which, once released, serve as emptying orifices which, taken individually, have a passage. wise enough reduced to oppose, in cooperation with the surface tension of the fluid product packed in the container, the involuntary flow of the product. 2. Gaine tubulaire en matière thermosoudable, pour la fa- brication de récipients selon la revendication 1, caractérisée par une zone marginale aplatie, poursuivant une ligne-dentée et les ré- cipients obtenus à l'aide de soudures transversales en des endroits espacés exécutées après remplissage de la gaine. 2. Tubular sheath of heat-sealable material, for the manufacture of containers according to claim 1, characterized by a flattened marginal zone, continuing a toothed line and the containers obtained by means of transverse welds in spaced places executed after filling the sheath. 3. Gaine tubulaire en matière thermosoudable pour la fabri.- cation de récipients selon la revendication 1, caractérisée en ce qu'elle possède une zone discontinue qui la divise longitudinale- ment en deux espaces intercommuniquants à capacité inégale. 3. Tubular sheath of heat-sealable material for the fabrication of containers according to claim 1, characterized in that it has a discontinuous zone which divides it longitudinally into two intercommunicating spaces of unequal capacity. 4. Gaine tubulaire en matière thermosoudable pour la fabri- cation de récipients selon la revendication 1, caractérisée en ce qu'elle possède une zone discontinue qui la divise longitudinale- ment en deux espaces intercommuniquants à capacité inégale dont le plus grand est rempli ' d'un produit fluide à emballer, le plus é- troit étant rempli d'air. 4. Tubular sheath of heat-sealable material for the manufacture of containers according to claim 1, characterized in that it has a discontinuous zone which divides it longitudinally into two intercommunicating spaces of unequal capacity, the larger of which is filled with a fluid product to be packaged, the narrowest being filled with air. 5. Récipient scellé par soudage, caractérisé en ce qu'il est divisé par un barrage discontinu en deux espaces intercommuni- quants de capacité inégale dont le plus grand est rempli d'un pro- duit fluide, le plus petit étant rempli d'air. 5. Container sealed by welding, characterized in that it is divided by a discontinuous barrier into two intercommunicating spaces of unequal capacity, the larger of which is filled with a fluid product, the smaller being filled with air. . 6. Récipient suivant la revendication 5, caractérisé en ce que l'endroit servant d'orifice de vidage est isolé du restant du corps du récipient par un barrage, celui-ci ménageant pour le produit fluide y renfermé et devant en être èxpulsé, au moins un <Desc/Clms Page number 9> passage d'intercommunication. 6. Container according to claim 5, characterized in that the place serving as an emptying orifice is isolated from the remainder of the body of the container by a barrier, the latter providing for the fluid product contained therein and having to be expelled therefrom, at the minus one <Desc / Clms Page number 9> intercommunication passage. 7. Récipient suivant la revendication 5, possédant un gou- lot, caractérisé en ce que ses parois sont rapprochées et soudées ensemble au moins à un endroit situé entre les bords du récipient aplati, près de la base-de son goulot pour y barrer partiellement le passage au produit. 7. A container according to claim 5, having a neck, characterized in that its walls are brought together and welded together at least at a place situated between the edges of the flattened container, near the base of its neck to partially block it. the switch to product. 8. Récipient suivant la revendication 7, caractérisé en ce qu'il porte une pince élastique aplatissant ses parois près de la / base de son goulot. 8. Container according to claim 7, characterized in that it carries an elastic clamp flattening its walls near the / base of its neck. 9. Gaine thermosoudab le, remplie en préalable d'une sub- stance fluide, caractérisée en ce qu'on applique sur ses parois, conjointement en des endroits espacés et transversalement au sens de sa longueur, deux par deux, des soudures, dont l'une est. réali- sée en un trait-continu tandis que l'autre est discontinue, étant interrompue en plusieurs endroits. 9. Heat-sealable sheath, filled beforehand with a fluid substance, characterized in that one applies to its walls, jointly in spaced places and transversely in the direction of its length, two by two, welds, of which the one is. made in one continuous line while the other is discontinuous, being interrupted in several places. 10. Matrice soudeuse, caractérisée en ce qu'elle possède une face soudante continue qui est accompagnée d'une face soudante discontinue et légèrement écartée de la face soudante continue. 10. Welding die, characterized in that it has a continuous welding face which is accompanied by a discontinuous welding face and slightly spaced from the continuous welding face. 11. Gaine thermosoudable, remplie d'une substance fluide à conditionner, compartimentée en des endroits espacés par solidarisa- tion de ses parois rapprochées au moyen de matrices soudeuses, ca- ractérisée en ce que chaque soudure de séparation étanche est accom- pagnée d'une zone de soudure discontinue, interrompue en plusieurs endroits, exécutée, comme la soudure de séparation dont elle est lé- gërement écartée, sur la gaine préalablement remplie de la substance fluide à conditionner. 11. Heat-weldable sheath, filled with a fluid substance to be conditioned, compartmentalized in spaced places by joining together of its closely spaced walls by means of welding dies, characterized in that each sealed separation weld is accompanied by ' a discontinuous weld zone, interrupted in several places, carried out, like the separation weld from which it is slightly removed, on the sheath previously filled with the fluid substance to be conditioned. 12. Récipient en matière.thermosoudable, rempli d'une sub- stance fluide et scellé, caractérisé par une zone soudée discontinuer interrompue en plusieurs points et traversant le récipient à proxi- mité d'une de ses extrémités. 12. Container made of heat-sealable material, filled with a fluid substance and sealed, characterized by a discontinuous welded zone interrupted at several points and passing through the container near one of its ends.
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3155282A (en) * 1963-05-09 1964-11-03 Crompton & Knowles Corp Sprinkler type package
US3159096A (en) * 1962-09-24 1964-12-01 Alfred M Tocker Combined container and juicer
US3246444A (en) * 1962-08-09 1966-04-19 T J Paisley Company Method of forming a container having a shaker outlet
US3388836A (en) * 1966-11-10 1968-06-18 Otto Shaker-type dispensing package
US3418059A (en) * 1967-03-20 1968-12-24 Robe Associates Dispenser package for flowable materials and method of forming same
US4759472A (en) * 1986-04-17 1988-07-26 Hays Macfarland & Associates Container having a pressure-rupturable seal for dispensing contents
US4808346A (en) * 1972-07-20 1989-02-28 Strenger & Associates Carbonated beverage dispensing apparatus and method
EP0538907A1 (en) * 1989-03-08 1993-04-28 Heisei Polymer Co., Ltd. Heat sealed wrapping member

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3246444A (en) * 1962-08-09 1966-04-19 T J Paisley Company Method of forming a container having a shaker outlet
US3159096A (en) * 1962-09-24 1964-12-01 Alfred M Tocker Combined container and juicer
US3155282A (en) * 1963-05-09 1964-11-03 Crompton & Knowles Corp Sprinkler type package
US3388836A (en) * 1966-11-10 1968-06-18 Otto Shaker-type dispensing package
US3418059A (en) * 1967-03-20 1968-12-24 Robe Associates Dispenser package for flowable materials and method of forming same
US4808346A (en) * 1972-07-20 1989-02-28 Strenger & Associates Carbonated beverage dispensing apparatus and method
US4759472A (en) * 1986-04-17 1988-07-26 Hays Macfarland & Associates Container having a pressure-rupturable seal for dispensing contents
EP0538907A1 (en) * 1989-03-08 1993-04-28 Heisei Polymer Co., Ltd. Heat sealed wrapping member

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