DE1118960B - Device for closing plastic bags that are already closed on one side - Google Patents

Device for closing plastic bags that are already closed on one side

Info

Publication number
DE1118960B
DE1118960B DEK38981A DEK0038981A DE1118960B DE 1118960 B DE1118960 B DE 1118960B DE K38981 A DEK38981 A DE K38981A DE K0038981 A DEK0038981 A DE K0038981A DE 1118960 B DE1118960 B DE 1118960B
Authority
DE
Germany
Prior art keywords
support plate
edge
film
stamp
column
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DEK38981A
Other languages
German (de)
Inventor
Anton Kolb
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.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DEK38981A priority Critical patent/DE1118960B/en
Publication of DE1118960B publication Critical patent/DE1118960B/en
Pending legal-status Critical Current

Links

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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
    • 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
    • B29C66/112—Single lapped 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
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • 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
    • B29C66/242—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 closed, i.e. forming closed contours
    • B29C66/2422—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 closed, i.e. forming closed contours being circular, oval or elliptical
    • B29C66/24221—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 closed, i.e. forming closed contours being circular, oval or elliptical being circular
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • B29C66/53462—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies joining substantially flat covers and substantially flat bottoms to open ends of container bodies
    • 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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • 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
    • B29C66/8145—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • 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
    • B29C66/816—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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—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 mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • 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
    • B29C66/816—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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • 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
    • 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/841—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions
    • B29C66/8414—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions of different diameter
    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • B65B51/146—Closing bags
    • 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
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap 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
    • B29C66/40—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
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/474—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat
    • B29C66/4742—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat said single elements being spouts
    • B29C66/47421—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat said single elements being spouts said spouts comprising flanges
    • 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
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/002—Flexible containers made from sheets or blanks, e.g. from flattened tubes by joining superimposed sheets, e.g. with separate bottom sheets
    • 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
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/003—Flexible containers made from sheets or blanks, e.g. from flattened tubes made from tubular sheets
    • 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

Description

Vorrichtung zum Verschließen von bereits einseitig geschlossenen Kunststoffbeuteln Die Erfindung betrifft eine Vorrichtung zum Verschließen von bereits einseitig geschlossenen Kunststoffbeuteln, insbesondere zum Verschweißen eines den Mantel eines solchen Beutels bildenden Folienschlauches aus thermoplastischem Kunststoff mit einem eine ebene Folie umfassenden Deckel längs eines umgefalteten Randes des Folienschlauches. Es sind Vorrichtungen verschiedener Art bekanntgeworden, die zum Verschweißen eines den Boden des Beutels bildenden ebenen Kunststoffolienstückes mit einem schmalen, nach innen umgelegten Rand des Folienschlauches dienen. Device for closing already closed on one side Plastic bags The invention relates to a device for closing already Plastic bags closed on one side, in particular for welding one of the Sheath of such a bag-forming film tube made of thermoplastic material with a cover comprising a flat film along a folded edge of the Foil tube. Devices of various types have become known that are used for Welding a flat piece of plastic film forming the bottom of the bag serve with a narrow, inwardly folded edge of the film tube.

Es ist nun in der Praxis der Wunsch aufgetreten, derartige, durch Anschweißen eines Bodens hergestellte und oben offene Rundbodenbeutel auch an ihrem oberen Ende mit einem flüssigkeits- bzw. gasdichten Verschluß versehen zu können. Beispielsweise soll der Rundbodenbeutel an seinem oberen Rand mit einem angeschweißten Deckel aus einem ebenen Kunststoffolienstück versehen werden, das vor dem Aufbringen auf den Beutel eine oder mehrere Öffnungen erhalten hat und an diesen Öffnungen mit entsprechend geformten, dicht verschweißten Schraubverschlüssen versehen ist. Derartige, nach Art von Flaschen allseitig geschlossene und lediglich an ihrem oberen Ende mit einer verschraubbaren oder auf sonstige Weise verschließbaren Öffnung versehene Beutel aus Kunststoffolie können als Einlage in entsprechende Rundbehälter aus Pappe, Blech od. dgl. eingebracht werden und zur Aufnahme von Flüssigkeiten oder von pulverförmigen oder körnigen Schüttgütern od. dgl. dienen. The wish has now arisen in practice to carry out such things Welding a bottom made and open top round bottom bags also on theirs to be able to provide the upper end with a liquid- or gas-tight closure. For example, the round bottom bag should have a welded on its upper edge Cover made of a flat piece of plastic film, which is provided before the application has received one or more openings on the bag and at these openings is provided with appropriately shaped, tightly welded screw caps. Such bottles are closed on all sides and only on their upper side End provided with a screwable or otherwise closable opening Bags made of plastic film can be used as an insert in corresponding round boxes made of cardboard, Sheet metal od. The like. Are introduced and for receiving liquids or powdery or granular bulk materials or the like.

Die Erfindung bezieht sich also auf eine Vorrichtung zum Verschweißen eines bereits einseitig geschlossenen Beutels aus thermoplastischen Kunststoffen an seinem oberen Rand mit einer ebenen Kunststoffolie als Deckel, mit einer Auflageplatte mit ringförmiger Andruckfläche für die zu verschweißenden Folienstücke, deren äußerer Rand geringfügig größer als der Innendurchmesser des Folienmantels ist, und einem darüber befindlichen, mit einer ringförmigen Gegendruckfläche versehenen beheizbaren Stempel, wobei die Auflageplatte aus einer unteren Grenzlage gegen den Stempel hin verschiebbar ist. The invention thus relates to a device for welding a bag made of thermoplastics that is already closed on one side at its upper edge with a flat plastic film as a cover, with a support plate with a ring-shaped pressure surface for the pieces of film to be welded, the outer one Edge is slightly larger than the inner diameter of the film jacket, and one located above, provided with an annular counterpressure surface heatable Stamp, with the platen from a lower limit position against the stamp is movable.

Die Verwendung einer Auflageplatte mit einem äußeren Rand, der geringfügig größer als der Innendurchmesser des Folienmantels ist, bewirkt beim Aufziehen des Folienschlauches von selbst ein entsprechendes Umlegen des freien Randes um die ringförmige Andruckfläche der Auflageplatte herum.The use of a platen with an outer edge that is slightly is larger than the inner diameter of the film jacket, causes when the Foil tube by itself a corresponding folding of the free edge around the ring-shaped pressure surface of the platen around.

Während es nun bei beiderseits offenen Folienschläuchen ohne weiteres möglich ist, diese außen über eine Auflageplatte zu ziehen, wobei der Rand entsprechend gedehnt und gleichzeitig von selbst nach innen umgelegt wird, ist das bei bereits einseitig geschlossenen Folienschläuchen, also bei einseitig offenen Beuteln, nicht mehr möglich.While it is now without further ado with film tubes that are open on both sides is possible this outside to pull over a platen, with the edge accordingly is stretched and at the same time folded inwards by itself, that is already the case Foil tubes closed on one side, i.e. bags that are open on one side, are not more is possible.

Erfindungsgemäß wird deshalb der schlauchförmige Mantel des bereits einseitig geschlossenen Beutels nicht von außen über eine Auflageplatte gezogen, sondern von innen nach außen über den Rand der Auflageplatte gezogen und manschettenförmig umgeklappt. Die erfindungsgemäße Vorrichtung umfaßt demgemäß eine die Auflageplatte zentral tragende Mittelsäule und eine exzentrisch zwischen dieser Mittelsäule und dem äußeren Rand der Auflageplatte liegende, in zirkularer Richtung begrenzte Öffnung zur Aufnahme des zu verschweißenden Randes des Folienschlauches. According to the invention, therefore, the tubular jacket of the already bag closed on one side not pulled from the outside over a support plate, but drawn from the inside out over the edge of the support plate and cuff-shaped folded down. The device according to the invention accordingly comprises a support plate centrally supporting central column and one eccentric between this central column and the outer edge of the support plate, delimited in the circular direction opening to accommodate the edge of the film tube to be welded.

Das Aufziehen des den Mantel des Beutels bildenden Folienschlauches kann in der Weise erfolgen, daß der bereits mit einem Boden versehene Beutel nach links umgekrempelt und dann von oben, mit seiner Öffnung nach unten gewandt, über den Rand der Auflageplatte gezogen wird. Anschließend wird dann unter Rückwendung des Beutels dieser mit dem größten Teil seines Mantels und mit seinem Boden durch die genannte Öffnung hindurchgebracht und hängt dann unterhalb der Auflageplatte frei herab. The pulling up of the tubular film that forms the jacket of the bag can be done in such a way that the bag already provided with a bottom after turned inside out on the left and then from above, with its opening facing down, over the edge of the platen is pulled. Subsequently, then turning back the bag this with the largest part of its coat and with its bottom through brought through said opening and then hangs below the platen freely descend.

Das Aufziehen des Folienschlauches kann aber auch von unten her erfolgen. Zu diesem Zweck wird der Beutel nicht gewendet, sondern, mit seiner Öffnung nach oben, durch die Öffnung in der Auflageplatte hindurchgezogen und anschließend unter leichter Aufweitung mit seinem oberen Rand um den Rand der Auflageplatte herumgezogen. The film tube can also be pulled on from below. For this purpose, the bag is not turned over, but with its opening facing above, pulled through the opening in the support plate and then below slightly widened with its upper edge pulled around the edge of the support plate.

Anschließend wird die auf den oberen Rand des Folienschlauches aufzuschweißende Deckplatte, bestehend aus einem ebenen Folienstück aus thermoplastischem Kunststoff und mit einem Schraubverschluß od. dgl. versehen, auf den von dem oberen Ende des Folienschlauches überdeckten Rand der Auflageplatte aufgelegt und nach den Seiten hin glatt gezogen. Daraufhin erfolgt die Verschweißung, indem die Auflageplatte, etwa hydraulisch, bis zur Berührung mit dem konzentrisch über ihr befindlichen Stempel angehoben wird. Dabei werden selbstverständlich die bekannten Maßnahmen zur Verhinderung des Anklebens der Folie an der Auflageplatte bzw. am beheizten Stempel getroffen. So wird beispielsweise auf den Rand der Auflageplatte vor dem Aufbringen des Beutels ein Ring aus einem nicht verschweißenden Werkstoff, beispielsweise Polytetrafluoräthylen, aufgebracht oder ein derartiger Kunststoff auf das Metall aufgespritzt. Entsprechend wird nach dem Auflegen der Deckfolie eine Trennfolie aus dem vorgenannten Werkstoff aufgelegt oder aber der Stempel unterseitig im Bereich seiner Arbeitsfläche mit einer aufgespritzten oder in sonstiger Weise aufgebrachten Schicht eines derartigen Werkstoffes versehen. Schließlich kann, um die Auflage für die zu verschweißenden Folienstücke elastisch zu gestalten, auf die Auflageplatte vor dem Aufbringen der Trennfolie bzw. Trennschicht eine etwas stärkere Schicht aus einem weichelastischen Werkstoff, beispielsweise aus Gummi, aufgebracht, vorzugsweise aufvulkanisiert werden. Then the to be welded onto the upper edge of the film tube Cover plate, consisting of a flat piece of thermoplastic film plastic and with a screw cap or the like. Provided on the from the upper end of the Foil tube covered edge of the support plate and placed on the sides straightened out. Then the welding takes place, in that the support plate, approximately hydraulically, until it comes into contact with the stamp located concentrically above it is raised. It goes without saying that the known measures for prevention are taken into account the sticking of the film to the platen or the heated stamp. For example, on the edge of the platen before applying the bag a ring made of a non-weldable material, e.g. polytetrafluoroethylene, applied or such a plastic sprayed onto the metal. Corresponding After the cover film has been placed, a separating film made of the aforementioned material is created placed or the stamp on the underside in the area of its work surface with a sprayed or otherwise applied layer of such Material provided. Finally you can order the support for the to be welded Make pieces of film elastic on the platen before applying the Separating film or separating layer is a somewhat thicker layer made of a soft elastic Material, for example made of rubber, applied, preferably vulcanized on.

Weiterhin wird erfindungsgemäß vorgeschlagen, daß der Rand der Auflageplatte zur sicheren Aufnahme des Randes des Folienschlauches nach der von der Säule abgewandten Seite hin konisch erweitert ist. Durch diese Ausführung des Folienschlauchrandes wird ein eventuelles Abrutschen des Schlauches von der Auflageplatte erschwert. It is also proposed according to the invention that the edge of the support plate for the safe reception of the edge of the film tube after the one facing away from the column Side is widened conically. This design of the film tube edge this makes it more difficult for the hose to slip off the support plate.

Vorzugsweise ist weiterhin vorgesehen, auf die Auflageplatte oberseitig einen Ring aufzusetzen, der eine in radialer Richtung schmale Stirnseite besitzt. It is preferably also provided on the top of the support plate to put on a ring which has a narrow end face in the radial direction.

Dieser Ring erleichtert ein faltenloses Umlegen des Folienschlauches.This ring makes it easier to fold the film tube over without creases.

Vorzugsweise ist ferner vorgesehen, daß die konzentrisch zur Säule oberhalb derselben angeordnete Stempelplatte unterseitig mit zwei oder mehreren, konzentrisch angeordneten, von innen nach außen in der axialen Höhe zunehmenden Ringleisten versehen ist, die je mit einem eigenen elektrischen Heizelement versehen und wahlweise beheizbar sind. It is also preferably provided that the concentric to the column stamp plate arranged above the same with two or more, concentrically arranged, increasing in axial height from the inside to the outside Ring strips are provided, each provided with its own electrical heating element and are optionally heatable.

Eine derartige, mit mehreren Ringleisten verschiedenen Durchmessers versehene Stempelplatte kann zum Schweißen von Beuteln verschiedenen Durchmessers, selbstverständlich in Verbindung mit entsprechend bemessenen, verschieden großen Auflageplatten, verwendet werden. Während nämlich das Auswechseln der Auflageplatte verhältnismäßig einfach ist, bereitet das Auswechseln der beweglich gelagerten Stempelplatte gewisse Schwierigkeiten. Die vorstehend beschriebene erfindungsgemäße Stempelplatte gestattet demgegenüber je nach der Zahl der an ihrer Unterseite angebrachten Ringleisten, das Schweißen von Beuteln mit zwei oder mehreren verschiedenen Durchmessern, ohne daß die Stempelplatte selbst ausgewechselt werden müßte. One of these, with several ring strips of different diameters provided stamp plate can be used for welding bags of different diameters, of course in connection with appropriately sized, different sizes Support plates are used. Namely during the replacement of the platen is relatively simple, prepares the replacement of the movably mounted stamp plate certain difficulties. The stamp plate according to the invention described above on the other hand, depending on the number of ring strips attached to their underside, allows the welding of bags with two or more different diameters, without that the stamp plate itself would have to be replaced.

Erfindungsgemäß wird nicht die gesamte Stempelplatte beheizt, sondern nur die jeweils verwendete Ringleiste, indem nur deren elektrisches Heizelement eingeschaltet wird. According to the invention, it is not the entire stamp plate that is heated, but rather only the ring bar used in each case by only adding its electrical heating element is switched on.

Um einen Abfluß der von dem elektrischen Heizelement erzeugten Wärme in die Stempelplatte zu verhindern oder zu verringern, kann diese Platte eine zusätzliche Beheizung besitzen. Vorzugsweise ist jedoch vorgesehen, daß zwischen den Ringleisten und der Stempelplatte Abstandsstücke aus einem wärmeisolierenden Werkstoff vorgesehen sind. Bei einer solchen Ausführung erübrigt es sich, die Stempelplatte zu beheizen. Vielmehr kann diese nunmehr völlig kalt bleiben, was ihre Aufhängung bzw. Lagerung erheblich erleichtert und auch die Bedienung der Vorrichtung einfacher und gefahrloser gestaltet. To have a drain of the heat generated by the electrical heating element into the stamp plate too prevent or reduce, this plate can be an additional Own heating. However, it is preferably provided that between the ring strips and spacers made of a heat insulating material are provided for the stamp plate are. With such an embodiment, there is no need to heat the stamp plate. Rather, this can now remain completely cold, which is its suspension or storage considerably facilitated and also the operation of the device simpler and safer designed.

Die Erfindung wird nachstehend in einem Ausführungsbeispiel an Hand der Zeichnung näher erläutert. Dabei zeigt Fig. 1 eine schematisierte Schnittdarstellung einer erfindungsgemäßen Vorrichtung mit eingelegtem Kunststoffbeutel und aufgelegter Deckfolie, im geöffneten Zustand vor dem Verschweißen, Fig. 2 eine Draufsicht auf die Auflageplatte gemäß Fig. 1, jedoch ohne eingelegten Kunststoffbeutel bzw. ohne Deckfolie, Fig. 3 einen vergrößerten Teilschnitt durch den Rand der in Fig. 1 dargestellten Auflegeplatte und Fig. 4 einen Schnitt durch einen mit der Vorrichtung nach Fig. 1 bis 3 hergestellten Kunststoffbeutel. The invention is illustrated below in an exemplary embodiment the drawing explained in more detail. 1 shows a schematic sectional illustration a device according to the invention with an inserted plastic bag and placed on top Cover film, in the open state before welding, FIG. 2 shows a plan view the support plate according to FIG. 1, but without an inserted plastic bag or without Cover sheet, FIG. 3 shows an enlarged partial section through the edge of the one shown in FIG. 1 Support plate and FIG. 4 shows a section through a device with the device according to FIG. 1 to 3 manufactured plastic bags.

Die Vorrichtung gemäß Fig. 1 umfaßt zunächst eine Säule 2, die an ihrem unteren Ende mit einem Kolben 3 fest verbunden ist, der seinerseits in einem feststehenden Zylinder 4 vertikal verschiebbar geführt ist. The device according to FIG. 1 initially comprises a column 2 which is connected to its lower end is firmly connected to a piston 3, which in turn in a fixed cylinder 4 is guided vertically displaceable.

Dabei dient der Deckel 5 des Zylinders als Führung für die Säule 2 und als oberer Anschlag für den Kolben. Am Boden des Zylinders sind eine Zuführungsleitung 6 und eine Abführungsleitung9 vorgesehen, durch die ein Druckmedium zugeführt bzw. abgeführt werden kann.The cover 5 of the cylinder serves as a guide for the column 2 and as an upper stop for the piston. There is a feed line at the bottom of the cylinder 6 and a discharge line 9 are provided through which a pressure medium is supplied or can be discharged.

Auf das obere Ende der Säule 2 ist eine Auflageplatte 101 aufgesetzt und auf dieser lösbar befestigt. A support plate 101 is placed on the upper end of the column 2 and releasably attached to it.

Diese Auflageplatte kann jederzeit durch Lösen der auf ihrer Unterseite vorgesehenen Steck- und Schraubverbindung gegen eine solche anderen Durchmessers ausgewechselt werden.This support plate can be opened at any time by loosening the underside provided plug and screw connection against such a different diameter be replaced.

Die Auflageplatte 101 ist mit einer exzentrischen, in zirkularer Richtung begrenzten Öffnung 101 versehen, deren Form aus Fig. 2 erkenntlich ist. Diese Öffnung hat, wie aus Fig. 1 ersichtlich ist, die Aufgabe, dem mit seinem oberen Rand um den Rand der Auflageplatte umgelegten Folienbeutel unterseitig durch die Auflageplatte hindurchtreten und nach unten frei durchhängen zu lassen. Die Form der besagten Öffnung ist deshalb an sich belanglos; zweckmäßig wird man diese Öffnung allerdings so groß wie möglich wählen, um ein übermäßiges Falten oder Knicken des durchhängenden Kunststoffbeutels zu vermeiden. Die Größe der Öffnung02 ist letztlich nur dadurch begrenzt, daß zwischen dem äußeren Rand der Auflageplatte und der in ihrem Mittelpunkt unterseitig befestigten und mit der Säule 2 verbundenen Steckvorrichtung 129 eine ausreichend stabile Verbindung bestehen bleibt. Dabei ist zu berücksichtigen, daß nicht nur das Eigengewicht der Auflageplatte 101, sondern auch der in axialer Richtung wirkende Andruck der Stempelplatte aufzunehmen ist. The support plate 101 has an eccentric, circular shape Provided in the direction of the limited opening 101, the shape of which can be seen from FIG. This opening has, as can be seen from Fig. 1, the task of which with its upper Edge around the edge of the support plate folded film bag underneath through the Step through the support plate and allow it to sag freely downwards. Form the said opening is therefore irrelevant in itself; this opening becomes useful however, choose as large as possible to avoid excessive folding or creasing of the Avoid sagging plastic bags. The size of the opening 02 is ultimately only limited by the fact that between the outer edge of the platen and the in Plug-in device attached to its center and connected to the column 2 on the underside 129 a sufficiently stable connection remains. It must be taken into account that not only the dead weight of the support plate 101, but also the axial Direction acting pressure of the stamp plate is to be recorded.

Auf die Stempelplatte 101 ist, wie man aus Fig. 1 und insbesondere aus Fig. 3 erkennt, ein Ringl07 aufgesetzt und mit der Auflageplatte fest verschraubt. On the stamp plate 101 is, as can be seen from Fig. 1 and in particular recognizes from Fig. 3, a Ringl07 placed and screwed tightly to the support plate.

Dieser Ring besitzt oberseitig eine in radialer Richtung schmale Stirnseite 106. Unterhalb dieser Stirnseite ist der Ring 107 konisch erweitert, während sich die Auflageplatte 101 außen von oben nach unten konisch verjüngt. Durch diese Ausführung wird das Umlegen des oberen Randes des Folienschlauches 114, der den Mantel des Kunststoffbeutels bildet, erleichtert. Der auf die Auflageplatte aufgeschraubte Ring 107 besitzt in seiner konischen Mantelfläche ferner eine umlaufende Ringnut 108. Längs dieser Ringnut kann nach erfolgter Schweißung ein Messer od. dgl. herumgeführt werden, das den überstehenden und nicht mehr benötigten Rand des Folienschlauches 114 sauber abtrennt.This ring has an end face that is narrow in the radial direction on the upper side 106. Below this face, the ring 107 is conically widened, while the support plate 101 outside from top to bottom conically tapered. With this design, the folding over of the upper edge of the film tube 114, which forms the jacket of the plastic bag, facilitates. The one on the platen The screwed-on ring 107 also has a circumferential surface in its conical outer surface Annular groove 108. Along this annular groove, after the welding, a knife or. Like. Be led around that the protruding and no longer needed edge of the Separate film tube 114 cleanly.

Auf die obere Stirnseite 106 des Ringes 107 ist ein Ring 112 aus weichelastischem Silikongummi aufgeklebt, der wiederum oberseitig mit einer verhältnismäßig dünnen Schicht aus Polytetrafluoräthylen belegt ist. Wie bereits im Hauptpatent beschrieben wurde, bewirkt die weichelastische Auflage 112 einen gleichmäßigen Andruck der zu verschweißenden Folien, während die Auflage aus PolytetraAuoräthylen ein Ankleben des Kunststoffolienrandes verhindert. A ring 112 is made on the upper end face 106 of the ring 107 soft elastic silicone rubber, which in turn has a relatively thin layer of polytetrafluoroethylene is covered. As in the main patent has been described, causes the soft elastic support 112 a uniform pressure the foils to be welded, while the support is made of polytetrafluoroethylene Prevents the edge of the plastic film from sticking.

Wie man weiter aus Fig. 1 erkennt, ist auf den umgelegten Rand des Folienschlauches 114 eine ebene Deckfolie 130 aufgelegt, die in ihrer Mitte durchbrochen und mit einem vorher angeschweißten Schraubverschluß 131 versehen ist. As can also be seen from Fig. 1, is on the folded edge of the Film tube 114 is placed a flat cover film 130 which is perforated in its center and is provided with a screw cap 131 welded on beforehand.

Die Vorrichtung kann an sich mit einer beliebigen Stempelplatte versehen sein, die aufgehängt ist. Da es jedoch in der Praxis häufig vorkommt, daß mit derselben Vorrichtung nacheinander Beutel mit zwei oder drei verschiedenen Durchmessern hergestellt werden sollen, und da das Auswechseln der Stempelplatte erheblich schwieriger ist als das Auswechseln der Auflageplatte 101, wird hierfür vorzugsweise eine abgewandelte Stempelplatte gemäß Fig. 1 verwendet. The device can be provided with any stamp plate be that hung up. However, since it often happens in practice that with the same Device successively produced bags of two or three different diameters should be, and since the replacement of the stamp plate is much more difficult than replacing the support plate 101, a modified one is preferably used for this Stamp plate according to FIG. 1 is used.

Diese Stempelplatte 118 ist in ihrer Mitte mit einer konischen Bohrung versehen und an einem Tragekonus 121 aufgehängt, der seinerseits von einer festen Säule 120 getragen wird. Dabei fluchtet die Mittelachse des Konus 121 bzw. der konischen Bohrung 133 in der Stempelplatte 118 mit der Mittelachse des hydraulischen Zylinders 4 und der in diesem geführten Säule 2. Die Säule 120 ist oberseitig mit einem Gewinde versehen und trägt dort eine Stellmutter 123, die als Anschlag für das obere Ende einer die Säule 120 umgebenden Schraubendruckfeder 122 dient und die deren Federkraft einzustellen gestattet.This stamp plate 118 is in its center with a conical bore provided and suspended from a support cone 121, which in turn has a fixed Pillar 120 is carried. The central axis of the cone 121 or the conical one is aligned Bore 133 in the punch plate 118 with the central axis of the hydraulic cylinder 4 and the column 2 guided in it. The column 120 has a thread on the top provided and there carries an adjusting nut 123, which acts as a stop for the upper end a helical compression spring 122 surrounding the column 120 is used and the spring force thereof allowed to set.

Die Stempelplatte 118 trägt unterseitig drei konzentrisch zueinander angeordnete Ringleisten 119, 119', 119". Diese Ringleisten besitzen ein L-förmiges Profil und sind über Abstandsstücke 120 aus Asbestzement od. dgl. mit der Stempelplatte 118 fest verbunden. Die Abstandsstücke 120 können auch als durchgehende Ringe ausgeführt sein. The stamp plate 118 carries three concentric to one another on the underside arranged ring strips 119, 119 ', 119 ". These ring strips are L-shaped Profile and are via spacers 120 made of asbestos cement or the like with the stamp plate 118 firmly connected. The spacers 120 can also be designed as continuous rings be.

Wie man deutlich aus Fig. 1 erkennt, sind die Ringleisten mit von außen nach innen abnehmender Höhe ausgeführt. Durch diese gestaffelte Ausführung wird verhindert, daß bei Benutzung der mittleren oder der äußeren Ringleiste die Ringleiste kleineren Durchmessers stört, indem sie beim Schweißvorgang die Deckfolie 130 berührt. As can be clearly seen from Fig. 1, the ring strips are from executed outside inwards with decreasing height. Through this staggered execution is prevented that when using the middle or the outer ring bar the Smaller diameter ring bar interferes with the fact that it breaks the cover film during the welding process 130 touched.

Jede der drei Ringleisten ist mit einem eigenen elektrischen Heizelement 124, 124', 124" versehen und kann wahlweise beheizt werden. Each of the three ring strips has its own electrical heating element 124, 124 ', 124 "and can optionally be heated.

Fig. 4 zeigt einen mit der vorstehend beschriebenen Vorrichtung hergestellten Kunststoffolienbeutel. Dabei ist der Boden 140 durch eine Schweißnaht 141 mit dem unteren Rand des Folienschlauches 114 verbunden, während die mit einem Verschluß 131 versehene Deckfolie 130 in der vorstehend beschriebenen Weise bzw. mit der vorstehend beschriebenen Vorrichtung längs einer Schweißnaht 132 mit dem radial nach außen umgelegten oberen Rand des Folienschlauches 114 verbunden ist. Fig. 4 shows one produced with the device described above Plastic film bags. The bottom 140 is connected to the by a weld 141 lower edge of the film tube 114 connected, while with a closure 131 provided cover film 130 in the manner described above or with the above described device along a weld 132 with the radially outward folded upper edge of the film tube 114 is connected.

Claims (5)

PATENTANSPRÜCHE: 1. Vorrichtung zum Verschweißen eines bereits einseitig geschlossenen Beutels aus thermoplastischem Kunststoff an seinem oberen Rand mit einer ebenen Kunststoffolie als Deckel, mit einer Auflageplatte mit ringförmiger Andruckfläche für die zu verschweißenden Folienstücke, deren äußerer Rand geringfügig größer als der Innendurchmesser des Folienmantels ist, und einem darüber befindlichen, mit einer ringförmigen Gegendruckfläche versehenen, beheizbaren Stempel, wobei die Auflageplatte aus einer unteren Grenzlage gegen den Stempel hin verschiebbar ist, gekennzeichnet durch eine die Auflageplatte (101) zentral tragende Mittelsäule (2) und eine exzentrisch zwischen dieser Mittelsäule und dem äußeren Rand liegende, in zirkularer Richtung begrenzte Öffnun (102) zur Aufnahme des zu verschweißenden Randes des Folienschlauches. PATENT CLAIMS: 1. Device for welding an already one-sided closed bag made of thermoplastic material at its upper edge with a flat plastic film as a cover, with a support plate with an annular Pressure surface for the pieces of film to be welded, their outer edge slightly is larger than the inner diameter of the foil jacket, and one above it, with an annular counterpressure surface provided, heatable stamp, wherein the The support plate can be moved from a lower limit position towards the punch, characterized by a central column (2) centrally supporting the support plate (101) and an eccentric between this central column and the outer edge, opening (102), limited in the circular direction, for receiving the material to be welded Edge of the film tube. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Rand (104) der Auflageplatte (101) zur sicheren Aufnahme des Randes des Folienschlauches (114) nach der von der Säule (2) abgewandten Seite hin konzentrisch erweitert ist. 2. Apparatus according to claim 1, characterized in that the edge (104) of the support plate (101) for securely receiving the edge of the film tube (114) is expanded concentrically towards the side facing away from the column (2). 3. Vorrichtung nach Anspruch 1 und 2, gekennzeichnet durch einen auf die Auflageplatte (101) oberseitig aufgesetzten, mit einer in radialer Richtung schmalen Stirnseite (106) versehenen, ein faltenloses Umlegen des Folienschlauches (114) an dem Ort der auszuführenden Schweißnaht erleichternden Ring (107). 3. Apparatus according to claim 1 and 2, characterized by a placed on the top of the support plate (101), with one in the radial direction narrow end face (106), a fold-free folding of the film tube (114) at the location of the weld seam to be made facilitating ring (107). 4. Vorrichtung nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß die konzentrisch zur Säule (2) oberhalb derselben angeordnete Stempelplatte (118) unterseitig mit zwei oder mehreren, konzentrisch angeordneten, von innen nach außen in der axialen Höhe zunehmenden Ringleisten (119) versehen ist, die je mit einem eigenen elektrischen Heizelement (124) versehen und wahlweise beheizt sind. 4. Apparatus according to claim 1 to 3, characterized in that the stamp plate (118) arranged concentrically to the column (2) above the same underneath with two or more, concentrically arranged, from the inside to the outside in the axial height increasing ring strips (119) is provided, each with a own electrical heating element (124) are provided and optionally heated. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß zwischen den Ringleisten (119) und der Stempelplatte (118) Abstandsstücke (120) aus einem wärmeisolierenden Werkstoff vorgesehen sind. 5. Apparatus according to claim 4, characterized in that between the ring strips (119) and the stamp plate (118) spacers (120) from one heat insulating material are provided. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 1 062004. Documents considered: German Patent No. 1 062004.
DEK38981A 1959-10-22 1959-10-22 Device for closing plastic bags that are already closed on one side Pending DE1118960B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK38981A DE1118960B (en) 1959-10-22 1959-10-22 Device for closing plastic bags that are already closed on one side

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK38981A DE1118960B (en) 1959-10-22 1959-10-22 Device for closing plastic bags that are already closed on one side

Publications (1)

Publication Number Publication Date
DE1118960B true DE1118960B (en) 1961-12-07

Family

ID=7221563

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK38981A Pending DE1118960B (en) 1959-10-22 1959-10-22 Device for closing plastic bags that are already closed on one side

Country Status (1)

Country Link
DE (1) DE1118960B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014066030A1 (en) * 2012-10-26 2014-05-01 Illinois Tool Works Inc. Protective body, heat sealing system that includes the protective body, and method for providing the protective body
EP3828257A4 (en) * 2018-07-23 2022-09-07 Zhejiang Jinyishengshi Bioengineering Co., Ltd. Disposable bioprocess bag, manufacturing method therefor, hot-melt annular welding machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014066030A1 (en) * 2012-10-26 2014-05-01 Illinois Tool Works Inc. Protective body, heat sealing system that includes the protective body, and method for providing the protective body
US20140116002A1 (en) * 2012-10-26 2014-05-01 Illinois Tool Works Inc. Protective body, heat sealing system that includes the protective body, and method for providing the protective body
EP3828257A4 (en) * 2018-07-23 2022-09-07 Zhejiang Jinyishengshi Bioengineering Co., Ltd. Disposable bioprocess bag, manufacturing method therefor, hot-melt annular welding machine

Similar Documents

Publication Publication Date Title
DE2334451A1 (en) CONTAINER LATCH AND METHOD OF ATTACHING AND RELEASING THIS LATCH
DE3636891C2 (en)
DE2602566A1 (en) DEVICE FOR SEALING THE TOP OF CONTAINERS
DE1604689A1 (en) Method and device for forming or manufacturing hollow objects
DE1953420B2 (en) Method and device for applying a film to the opening of a container
CH686665A5 (en) A process for preparing Rohrkoerper for packaging tubes.
CH618626A5 (en)
DE69938301T2 (en) DEVICE FOR TERMINATING A TERMINAL TO A HOUSING
DE1604573B1 (en) METHOD AND DEVICE FOR THE PRODUCTION OF HOLLOW BODIES BY THE BLOW METAL METHOD
DE3038115C2 (en) Packing device
DE1118960B (en) Device for closing plastic bags that are already closed on one side
DE2631084B2 (en) Device for producing a container from thermoplastic foam plastic with a beaded edge
DE2129805A1 (en) Method and device for closing a container with a lid
CH467144A (en) Method and device for producing bottle-like containers made of plastic
DE1757712B2 (en) Device for molding the apron-shaped edge of a closure cap to the contour of the neck of a container
DE896321C (en) Packaging container for mineral oil products and device for closing the same
DE1160356B (en) Device for closing can-like plastic containers with a plastic lid
DE1900953U (en) DEVICE FOR SEALING CONTAINERS BY USING A HEAT-SHRINKABLE PLASTIC FILM.
DE1461989C3 (en) Device for closing a packaging container
DE1461989B2 (en) DEVICE FOR CLOSING A PACKAGING CONTAINER
DE1933670C3 (en) Device for connecting the edge of a packaging container to the adjacent edge of a lid
AT239128B (en) Completely tight container closure for positive and negative pressure using beads and an annular seal, and tool on the one hand for production, on the other hand for opening it
DE102006057531B4 (en) Tool
CH386321A (en) Method and device for closing filled bags
AT217962B (en) Method and device for closing filled block-bottom bags