AU592443B2 - Creation of Inventions and Patents with Artificial Intelligence

AU592443B2 – Device for welding and perforating a thermoplastic film backfolded on itself
– Google Patents

AU592443B2 – Device for welding and perforating a thermoplastic film backfolded on itself
– Google Patents
Device for welding and perforating a thermoplastic film backfolded on itself

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Publication number
AU592443B2

AU592443B2
AU74363/87A
AU7436387A
AU592443B2
AU 592443 B2
AU592443 B2
AU 592443B2
AU 74363/87 A
AU74363/87 A
AU 74363/87A
AU 7436387 A
AU7436387 A
AU 7436387A
AU 592443 B2
AU592443 B2
AU 592443B2
Authority
AU
Australia
Prior art keywords
film
perforating
sealing
welding
itself
Prior art date
1986-05-21
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Ceased

Application number
AU74363/87A
Other versions

AU7436387A
(en

Inventor
Pierre Soubrier
Etienne Susini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Baxter International Inc

Original Assignee
Baxter International Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1986-05-21
Filing date
1987-05-20
Publication date
1990-01-11

1987-05-20
Application filed by Baxter International Inc
filed
Critical
Baxter International Inc

1987-12-22
Publication of AU7436387A
publication
Critical
patent/AU7436387A/en

1990-01-11
Application granted
granted
Critical

1990-01-11
Publication of AU592443B2
publication
Critical
patent/AU592443B2/en

2007-05-20
Anticipated expiration
legal-status
Critical

Status
Ceased
legal-status
Critical
Current

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Classifications

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

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

B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip

B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip

B29C65/224—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip being a resistive ribbon, a resistive band or a resistive strip

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

B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip

B29C65/228—Heated wire resistive ribbon, resistive band or resistive strip characterised by the means for electrically connecting the ends of said heated wire, resistive ribbon, resistive band or resistive strip

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

B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area

B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc

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

B29C65/7441—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc for making welds and cuts of other than simple rectilinear form

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

B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight

B29C66/244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being non-straight, e.g. forming non-closed contours

B29C66/2442—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being non-straight, e.g. forming non-closed contours in the form of a single arc of circle

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

B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces

B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles

B29C66/43—Joining a relatively small portion of the surface of said articles

B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms

B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself

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

B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps

B29C66/8182—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects

B29C66/81821—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects of the welding jaws

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

B29C66/8187—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects

B29C66/81871—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects of the welding jaws

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

B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table

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

B29C66/10—Particular design of joint configurations particular design of the joint cross-sections

B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section

B29C66/114—Single butt joints

B29C66/1142—Single butt to butt joints

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

B29C66/347—General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients

B—PERFORMING OPERATIONS; TRANSPORTING

B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL

B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

B29L2031/00—Other particular articles

B29L2031/46—Knobs or handles, push-buttons, grips

B29L2031/463—Grips, handles

B—PERFORMING OPERATIONS; TRANSPORTING

B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL

B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

B29L2031/00—Other particular articles

B29L2031/712—Containers; Packaging elements or accessories, Packages

B29L2031/7128—Bags, sacks, sachets

B—PERFORMING OPERATIONS; TRANSPORTING

B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL

B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

B29L2031/00—Other particular articles

B29L2031/712—Containers; Packaging elements or accessories, Packages

B29L2031/7148—Blood bags, medical bags

B—PERFORMING OPERATIONS; TRANSPORTING

B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER

B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER

B31B70/00—Making flexible containers, e.g. envelopes or bags

B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming

B—PERFORMING OPERATIONS; TRANSPORTING

B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER

B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER

B31B70/00—Making flexible containers, e.g. envelopes or bags

B31B70/60—Uniting opposed surfaces or edges; Taping

B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure

B—PERFORMING OPERATIONS; TRANSPORTING

B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER

B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER

B31B70/00—Making flexible containers, e.g. envelopes or bags

B31B70/60—Uniting opposed surfaces or edges; Taping

B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure

B31B70/642—Uniting opposed surfaces or edges; Taping by applying heat or pressure using sealing jaws or sealing dies

Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC

Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture

Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing

Y10T156/1313—Cutting element simultaneously bonds [e.g., cut seaming]

Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC

Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture

Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means

Y10T156/1702—For plural parts or plural areas of single part

Y10T156/1712—Indefinite or running length work

Y10T156/1737—Discontinuous, spaced area, and/or patterned pressing

Description

PC
T
ORGANISATION MOND E LA PROPRITE NlELL3E5%WQ ORGNIATON Bureau international 34 DEi’ANDE INTERNATIONALE PUBLIEE EN VERTU DU TRAITE DE COOPERATION EN MYATIERE DE BREVETS (PCT) (51)CQssification internationalie des brevets 4 (11) Num~ro de publication internationale: WO 87/ 072121 B31B 1/86, B29C 65/74 A2 (43) Date de publication internationale: 3 d~cembre 1987 (03.1t2.87) (21) Numiro de la demnande internationale: PCT/FR7/O 174 (74) Nlandataires: FRUCHARD, Guy etc.; Cabinet Boettcher, 23, rue La Boktie, F-75008 Paris (FR).
(22) Date de d~p6t international: 20 mai 1987 (20,05.87) (81) Etats d~sign~s: AT (brevet europ~en), AU, BE (brevet (31) Numnro de la demande prioritaire: 86/07210 europ~en), CH (brevet europ~en), DE (brevet -L,.rop~en), FR (brevet europ~en), GB (brevet europeen), (32) Date de prioriti: 21. mai 1986 (21.05.86) IT (brevet europ~en), JP, LU (brevet europ~en), NL (11)Pavdo, rinrt FR (brevet europ~en), SE (brevet europ~en), US, ‘A 6 SEE FO)L IC_ _2 INAME DI RECTED E 4 iatknale, sera republije Cr”Q. ‘PQ.1ter RaA-W’ Ce)JM 0T1 Inventeurs/Diposants (US seulement) SUSINI, Etienne B~ [FR/FR7,; 8, chemin de la Vall~e, F-94440 Villecresnes 2 SOUBRIER, Pierre [FR/BE]; 62, boulevard ~ASR~A’ Louis Schmidt, B-1040 Bruxelles (BE),.X1 U TRUA pAJhN’T O~f’CE (54) Title: DEVICE FOR WELDING AND PERFORATING A TH ERMIOPLASTIC FILM BACKFOLDED ON Itr-
SELF
(54)Titre: DISPOSITIF DE SOUDAGE ET DE PERFORATION DIUN FILM THERMOPLASTIQUE REPLIE SUR
LUI-MIEMVE
(57) Abstract The device for’welding and perforating a thermoplastic film 1,,ackfolded on itself and driven step by step comprises a support which is transvirsely movable with respect to the film and heating means carlied by the movable support (4y, said heb-.tng means including two electrically coliducting weldinE strips s paced apart erom each other and each comprising a hea’.11ng part 1) by passage of an electric current, and perforationi means arranged between ie welding strips according to the invention, the welding strips have a non~fheating part of a length at least equal to th,. heating part 1) and arranged downstream of the heating part along a displacement direction of the film (57) Abrigi Dispositif de soudage et de perforatiori d’un film thermoplastique repli6 sur lui-mnkne entrain6 pas A pas, comportant un support mobile transversai\txnern au film et des rnoyens chauffants portig par le support mobile ce mayens chauffants comprenant devix rubans. de soudale conducteurs de 1’6lec.
tricite’, espac~s Ilun de l’autre et ccomportant. chicun une partie 1) chauffante par passage d’un courant lectrique,, et des moyens de p ‘tforations disposes entre les rubans de soudage seion, l’inventdon les rubp,,4s de soudage comportent une partie non chauffante de lorig, eur du, momls 6gale d la partie chauffante 1) et dispos~e en aval de la partie chauifrante scion une direction de d~placement du film DI’F OR35ANSATION MONDIALE DE LA PROPRIETE INTELLECTUELLE Bureau internationala DEMANDE INTERNATIONALE PUBLIEE EN VERTU DU TRAITE DE COOPERATION EN MATIERE DE BREVETS (PCT) (51) Classification Internationale des brevets 4 B31B 1/86, B29C A-5/74 (11, Numkiro de publication Internationale: *13 (43) Date de publication internationale: 3 d~c WO 87/ 07212 embre 1987 (03.12.87) (21) Numiro de Is dernande internationale: PCT/FR87/00 174 (22) Date de dip6t international: 20 mai 1987 (20.05.87) (31) Numniro de lit demnande prioritaire: 86/072 10 (32) D)ate de prioriti: (33) Pays de prioriti: 21 mai 1986 (2 1.05.86) (74) Mandataires: FRUCHARD, Guy etc.; Cabinet Boettcher, 23. rue La Bo~tie, F-75008 Paris (FR).
(81) Etats di’signis: AT (brevet europ~en), AU, BE (brev’ europ~en), CH (brevet europ~en), DE (brevet o urop~en), FR (brevet europ~en), GB (brevet europ~en), IT (brevet europ~en), JP, LU (brevet ciirop~en), NL (brevet europ~en), SE (brevet europ~on), US.
uioi Aro vt pport do ,vchheh ~ineni*.
AvaP2 I’cm’nc A-4 d~iai premv pow, la modificaton di, reve wzwuio. suma repbliie ii do teies modaficahTIM SoRt IWp~f.
(88) Date de pubilcatio, dorapport de fechayche tiatenlationaile: I11 fdvrier 1988 (11.02,88) (71) Diposant (pour tous les Etati ddsign&s sauf US); BAX- TER TRAVENOL LABORATORIES, INC. [US/ US]; One Baxter Parkway, Deerfield, IL 60015 (US).
(72) Inventeurs; et InventeursDiwsants (US seulemenr) .SUS INI, Etienne [FR/FR]; 8, ch~min de la Vallke, F-94440 Villecresnes SOUBRIER, Pierre [FR/BE]; 62, boulevard Louis Schmidt, B-1040 Bruxelles (BF) ~f) (54)Title: DEVICE FOR WELDING AND PERFORATING A THERMOPLASTIC FILM BACKFOLDED ON IT-
SELF
(54)Titre. DISPOSITIF DE SOUDAGE ET DE PERFORATION D’UN FILM TI-ERMOPLA$TIQUE REPLIE SUR
LUI-MEME
(57) Abstract The device for welding and perforating a thermoplastic Film backfolded 7 Ir 7 on itself and driven step by step comprises a support which is transversely mov- 2 able with respect to the film and heating means carried by the movable support said heating means including two electrically conducting welding strips spaced apart from. each other and each comprising a heating part by passage of an electric current, and perforation means arranged between the welding _2 strips according to the invention, the welding strips have a non-heating part of a length at least equal to the heating part and arranged downstream of the heating part along a displacement direction of the film (57) Abrepi Dispositif de soudage et de perforation d’un, film thermoplastique repli6 Aral I sur lui-m~me entrain6 pas i pas, comportant un support mobile transversalement au Film et dl, s moyens chauffants port~s par le support mcbile ces moyens chauffants comprenant deux, rubans de soudage conduct~rurs de I’electricitt, espac~s F’un de l’autre et comportant chacun une parie 1) c(\auffante par passage d’un courant 6lectrique, et des moyens de perfoiations dLbpos~s entre 71W les rubans de soudage sclon l’invention les rubans de soudage ,omportcnt une partic non chauffante de longucur au momns 6gale At Ia partie chauffante *I 1) et disposie en avalI della partie chauffante selon une direction de dtwlacement du film 2 7 WO 87/07212 1 DEVICE FOR WELDING AND PERFORATING A THERMOPLASTIC FILM BACKFOLDED ON ITSELF The present invention relates to a device for sealing and perforating a thermoplastic film folded back on itself.
The invention especially applies, but not exclusively so, to the manufacture of perfusion pouches.
There are known machines for the manufacture of pouches from a flexible film of plastic material. Particularly, there are known machines for the manufacutre of pouches from a thermoplastic film. These machines include a series of stations at which the film is treated in succession.
Generally, the film is unwound from a winding device, then it is perforated. Perpendicular to the perforations, ports or fitments are heat sealed by a welding head then the film is shaped in a shaping device designed mostly to fold the film back on itself in order to create an edge to edge heat seal. The film thus sealed edge to e S* forms a tube that is then sealed in the transverse direction at regular intervals, to create individual pouches. These individual pouches beilng filled prior to the closing of the pouch.
The present invention more particularly relates to the device designed to create the edge to edge heat sealing of the film folded back on itself.
WO 87/07212 2 Devices are known that permit to create a seal parallel to, the edge, or even two seals parallel to the edge and spaced from each other, in oi-der to form a small protruding edge inside which a perforation can be made to create an opening to hang the pouch. The seal or seals generally are created by means of a sealing strip that comprises a heating portion, the LI sealed film then is allowed to cool naturally at the exit of the sealing station. Such a structure presents drawbacks, 7 especially in machines working at high speed in which the sealing strips must be brought to a high temperature $get in order to create a rapid sealing. Indeed there exists in that case a risk that the stresses exerted on the film as it exits the sealing station will cause a separation, partial at le st, of the associated film portions, so that the seal no longer is secure or at any rate is too fragile.
One purpose of the present invention is to provide a device for sealing and perforating a thermoplastic film folded back on itself, that permits to manufactur an improved pouch free from, the afore-mentioned drawbacks.
To t 17.4-s en~d th~ere i~s provided, acilording to the present invention, a device for sealing and perforatinig a thermoplastic film folded back on itself, driven step by step, that includes a support movable in a direction transverze I II II I WO 87/07212 to the film and heating means carried by the support.
The heating means includes two sealing strips that conduct electricity, spaced from each other, and each having a portion heated by the passage of an electric current. The device also includes perforating means located between the sealing strips, in which the sealing strips include a non-heating portion the length of which is at least equal to the heating portion, and located downstream from the heating portion in the direction of movement of the film.
Thus as the film moves step by step, the seals at 0 t the edges of the film are first created by the heating t, portion of the sealing strips, then cooled and flattened by the non-heating portion of the sealing strips. This prevents a later deformation of the sealed film.
According to an advantageous embodiment of the i invention, the perforating means is mounted on a base which is movable in a direction parallel to a longitudinal direction of the sealing strips. In that way, the position of the hanging opening can be adjusted at will. In V f r particular, when the machine is used to manufacture pouches of different widths, it is possible to position the perforating means so that the hanging opening will systematically fall in the middle of the pouch’s wdith.
According to another advantageous aspect of the invention, the perforating strip comprises folded back WO 87/07212 ends received in a first end of tubular connecting rods and welded to the latter, the tubular connecting rods having a second end equipped with a welded insert. In this manner, there is ensured a good connection, mechanical as well as electrical, between the perforation strip and the connecting rods which feed electric current to the perforation strip.
Other characteristics and advantages of the invention will be apparent from the detailed description of a preferred embodiment of the invention, taken together Swith the attachea drawings in which: Figure 1 is a perspective vieaq of the sealing and perforating device placed so as to face a film.
Figure 2 is an elevated view, with parts broken, of the sealing and perforating device according to the invention.
Figure 3 is a partial section view along a line III-III in Figure 2.
Figure 4 is a section view along line IV-IV in Figure 2.
Figure 5 is an enlarged perspective view of the perforating strip.
Figure 6 is a section view, still enlarged, along line VI-VI in Figure WO 87/07212 Figure 7 is a plan view of the film as it exits the sealing and perforating device according to the present invention.
Referring now to the Figures, the device according to the present invention is designed so that it ensures the edge to edge sealing and the perforating of a thermoplastic film 1 folded back on itself and having two layers 2 and 3. The device comprises a support 4 movable in a Sdirection transverse to the film 1 and the movements of which are ensured by an operating rod 5 which itself is connected to operating means (not illustrated), to a pneumatic jack for example. Preferably, the device also comprises a counterplate 6 placed facing the movable support 4 and serving as support for the film 1 when the movable support 4 is appled against the film 1 by the operating rod 5. The movable support 4 comprises, on its surface facing the film, heating means defined by two electricity conducting sealing strips 7 spaced from each other, and each including a section having a narrowed width 7.1 which offers an electrical resistance sufficient to become a heating portion by passage of an electric current. Downstream from the heating parts 7.1, in the direction of displacement of the thermoplastic film 1,
I
I
_CmSti L—3 At Al I AL t I A IA1 Af A oi WO 87/07212 6 each sealing strip 7 comprises a non-heating portion 7.2, for example a portion of strip of sufficient width to have a low electric resistance and the length of which is at least equal to the heating portion 7.1. The heating strips 7 are located on the face of the movable support 4 that is turned toward the thermoplastic film 1, and they extend beyond the ends of the movable support in order to make possible their connection to a source of electricity (not illustrated).
Perforating means generally designated as 8 is carried by the movable support 4, between the heating parts 7.1 of the sealing strips 7.
In the preferred embodiment of the invention illustrated, the perforating means 8 is mounted on a base 9 which is movable in a direction parallel to the longitudinal direction of the sealing strips 7. More specifically, the movable base 9 is located in an opening 10 created between the sealing strips 7 and having shoulders 11 and 12 on which there rest corresponding shoulders of the movable base 9.
At the rear part of the movable support 4, the opening opens along a slit 13 inside of which there runs a threaded rod 14 screwed at one of its ends in the movable base 9, and the other end of which is connected to a milled knob 15 that takes its support on the edges of slit 13 i
F
P
t r L r ci r r t WO 87/07212 7 4 by means of’ a washer 16 made of’ plastic material. Thus, when the milled knob 15 is tightened, the movable base 9 is blocked against the shoulders 11 and 12; when the milled knob 15 is loosened, however, the movable base 9 is free tc move ins.ide opening 10 in a direction parallel to the sealing strips 7.
The perforating means comprises a perforating strip 17 which is heated by the passage of’ an electric current and includes a longitudinal rib 18 turned toward the film.
Preferably, the perforation. strip 17 is a profiled strip curved in the form of’ a C, and the ends of’ which are folded back in a direction perpendicular to the plane of the strip and coupled with a first end of tubular connecting rods 19 to which they are welded by a welding 20. Mhe I second end of each connecting rod 19 is equipped with an insert 21 welded in the connectign rod.
LiIn order to receive the perforating means, the base 9 comprises borings 22 into which are positioned electrically insulating tubes 23. When the connecting 1 rods 19 are recte.ived within the insulating tubes 23, the perforating strip rests against an electrically and thermally insulating, plate 24 inserted in the front face of the movable base 9.
The inserts 21 located at the ends of the connecting rods 19 are blocked in sockets 25, themselves placed inside an insulating bl.ock 26, by means of blocking screws 27.
II WO 87/072128 Il The sockets 25 are connected in a classical manner to current feeding cables 28.
In order to prevent an overheating of the sealinr and perforating head, ducts 29 are advantageously provided Iin the movable support s.Ducts 29 are connected to Ia source of cooling fluid.
The device according to the invention functions at follows: the film 1 is advanced forward step by step between the movable support ~4 and the counterplate 1 At each stop of the film, the movable support is moved forward toward the film and an electric current is sent into the sealing strips 7 and into the perforating strip 17. At the position of the perforating strip 17, the lateral portions of strip 17 perform a sealing while the rib 1.8 passez through the two layers of the film.
After the film 1 has advanced forward one step, following the sealing and perforation, it is again pressed by the movable support 4j, at the position of the cooler portions 7.2 of the sealing strip 7. During this step the seals, which. are still hot, are crushed down while they are cooled, so that at the exit of the device the film comprises two flat teals 30 (Figure 7) that surround a small protruding outer edge 31 in which there 1,5 formed a curvilinear slit 32 in the form of a basket h~andle which is itse.L.f surrounded Ir wo 87/07212 9 by a seal 33. It is therefore seen that when the film 1 is sealed in the transverse direction, during a later step, the protruding outer edge 31 will be entirely sealed on its edges and therefore will not permit the accumulation of contaminants during the various manipulations.
Of course, the invention is not 14mited to the embodiment which has been described above, and it is subject to variations in practice that will be apparent to those skilled in the art. Specifically, the perforat;ng strip 17 may be made in the form of a circular ring so as to obtain an opening of the same shape in the protruding outer edge, the connecting rods, in that case, being welded in a direction perpendicular to the rear surface of the circular ring.
It is also possible to provide for the remote control modification of the movable base 9, so as to avoid an intervention at the level of the sealing and perforating device.
t Ia i t t 1 t t 1 1
S

Claims (1)

4. A sealing and perforating device according to Claim 3, characterized in that the perforating otrip has folded back ends received in a first end of tubular connecting~ rods and welded to the latter, the tubular connecting rods hA’aving a ser~ond end equipped with a welded insert. A sealing and perforating device according to Claim 1., characterized in that the perforating means is profiled in the form of a C and is positioned to create a slit in the shape of a basket handle. Dated this 24th day of October, 1989 BAXTER INTERNATIONAL INC. Patent Attorneys for the Applicant: PETER MAXWELL ASSOCIATES 44 04 0 0 9 04 o 0 0094 00 04 00 0 0 0004 0 O 0~90 *4 04 0 040 ~1 *004 00 04 0 0 *0 00 4 00 0400 0 4400 0 040044 0 0 0 00 04 9′ 4404 04 0 9 00 0#

AU74363/87A
1986-05-21
1987-05-20
Device for welding and perforating a thermoplastic film backfolded on itself

Ceased

AU592443B2
(en)

Applications Claiming Priority (2)

Application Number
Priority Date
Filing Date
Title

FR8607210A

FR2598966B1
(en)

1986-05-21
1986-05-21

WELDING AND PERFORATING DEVICE OF A THERMOPLASTIC FILM FOLDED ON ITSELF

FR8607210

1986-05-21

Publications (2)

Publication Number
Publication Date

AU7436387A

AU7436387A
(en)

1987-12-22

AU592443B2
true

AU592443B2
(en)

1990-01-11

Family
ID=9335432
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

AU74363/87A
Ceased

AU592443B2
(en)

1986-05-21
1987-05-20
Device for welding and perforating a thermoplastic film backfolded on itself

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US
(1)

US4946432A
(en)

EP
(1)

EP0267937B1
(en)

JP
(1)

JPS63503371A
(en)

AU
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AU592443B2
(en)

CA
(1)

CA1291309C
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FR
(1)

FR2598966B1
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WO
(1)

WO1987007212A2
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FR
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patent/FR2598966B1/en
not_active
Expired

1987

1987-05-20
EP
EP87903340A
patent/EP0267937B1/en
not_active
Expired – Lifetime

1987-05-20
AU
AU74363/87A
patent/AU592443B2/en
not_active
Ceased

1987-05-20
WO
PCT/FR1987/000174
patent/WO1987007212A2/en
active
IP Right Grant

1987-05-20
JP
JP62503256A
patent/JPS63503371A/en
active
Pending

1987-05-21
CA
CA000537673A
patent/CA1291309C/en
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Expired – Lifetime

1989

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patent/US4946432A/en
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Also Published As

Publication number
Publication date

EP0267937B1
(en)

1990-02-28

US4946432A
(en)

1990-08-07

WO1987007212A2
(en)

1987-12-03

FR2598966B1
(en)

1988-12-23

AU7436387A
(en)

1987-12-22

WO1987007212A3
(en)

1988-02-11

FR2598966A1
(en)

1987-11-27

CA1291309C
(en)

1991-10-29

JPS63503371A
(en)

1988-12-08

EP0267937A1
(en)

1988-05-25

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