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
Links
- 239000012530 fluid Substances 0.000 claims description 29
- 238000003466 welding Methods 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 238000005304 joining Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 3
- 230000001143 conditioned Effects 0.000 claims 2
- 210000001847 Jaw Anatomy 0.000 description 9
- 238000007789 sealing Methods 0.000 description 9
- 238000005520 cutting process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000001035 Gastrointestinal Tract Anatomy 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000717 retained Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/21—Particular 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/23—Particular 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
- B29C66/232—Particular 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General 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
- B29C66/814—General 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
- B29C66/8141—General 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
- B29C66/81427—General 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General 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
- B29C66/814—General 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
- B29C66/8141—General 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
- B29C66/81431—General 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General 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
- B29C66/814—General 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
- B29C66/8141—General 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
- B29C66/81433—General 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
-
- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D75/5805—Opening 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
- B65D75/5811—Opening 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/38—Impulse heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/22—Particular 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
- B29C66/227—Particular 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
- B29C66/2276—Other specific local geometries of interlocking undercuts not provided for in B29C66/2272 - B29C66/2274
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General 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
- B29C66/814—General 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
- B29C66/8141—General 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
- B29C66/81411—General 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
- B29C66/81421—General 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
- B29C66/81422—General 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
-
- 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
- B65D2575/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
- B65D2575/52—Details
- B65D2575/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D2575/586—Opening or contents-removing devices added or incorporated during package manufacture with means for reclosing
-
- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
- B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
-
- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/40—Packages 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
- B65D75/44—Individual packages cut from webs or tubes
- B65D75/48—Individual 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
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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-
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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-
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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-
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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.
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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.
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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
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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-
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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
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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)
Publications (1)
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BE560381A true BE560381A (en) |
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Cited By (8)
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 |
-
0
- BE BE560381D patent/BE560381A/fr unknown
Cited By (8)
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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