DE1110856B - Process for the production of foils intended for further processing into bags with drawstring - Google Patents
Process for the production of foils intended for further processing into bags with drawstringInfo
- Publication number
- DE1110856B DE1110856B DEB52146A DEB0052146A DE1110856B DE 1110856 B DE1110856 B DE 1110856B DE B52146 A DEB52146 A DE B52146A DE B0052146 A DEB0052146 A DE B0052146A DE 1110856 B DE1110856 B DE 1110856B
- Authority
- DE
- Germany
- Prior art keywords
- hose
- bags
- outside
- drawstring
- further processing
- 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
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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
-
- 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
- B29L2023/00—Tubular articles
- B29L2023/003—Tubular articles having irregular or rough surfaces
Description
Verfahren zum Herstellen von für die Weiterverarbeitung zu Beuteln mit Schnurzug bestimmten Folien Es ist bekannt, nahtlose Schläuche aus Kunststoffschmelzen im Blasverfahren herzustellen. Diese Schläuche kann man zu Beuteln verarbeiten, indem man den Schlauch durch einen in Längsrichtung in der Mitte des Schlauches verlaufenden Schnitt zerteilt und dann in Beutelbreite eine Trennschweißung quer zur Schlauchlänge vornimmt. Man erhält so Beutel ohne umgelegten oberen Rand. Falls man den Beutel mit einer Schnur verschließen will, muß der obere Beutelrand umgelegt und mit dem Beutel verschweißt werden, damit sich Laufgänge bilden, durch die man eine Schnur ziehen kann.Process for the production of bags for further processing with drawstring specific foils It is known, seamless tubes made of plastic melts to be produced in a blow molding process. These tubes can be processed into bags, by putting the hose through a lengthways in the middle of the hose running cut and then cut across the width of the bag to the length of the hose. This gives bags without a folded top edge. If if you want to close the bag with a string, the upper edge of the bag must be turned over and welded to the bag so that walkways are formed through which one can walk can pull a string.
Es wurde nun gefunden, daß man diese Laufgänge für die Zugschnur schon beim Blasen des Schlauches bilden kann, so daß ein nachträgliches Umlegen und Verschweißen des Randes unnötig ist, indem man außerhalb des Auslasses der Ringdüse gleichzeitig mit dem Schlauch zwei diametral gegenüberliegende Schlauchpaare von geringem Durchmesser als später zu verwendende Laufgänge mit ausspritzt, die von außen auf den aufgeblasenen, noch plastischen Teil des Folienschlauches auftreffen und so mit ihm fortlaufend verschweißt werden. It has now been found that these gangways for the pull cord can already form when blowing the hose, so that a subsequent folding and welding the edge is unnecessary by putting outside the outlet of the ring nozzle at the same time as the tube, two diametrically opposed pairs of tubes from small diameter than later to be used gangways with injected, which from on the outside, hit the inflated, still plastic part of the film tube and so continuously welded to it.
Wenn man nun noch, wie oben ausgeführt, durch einen Längsschnitt in der Mitte des Schlauches und durch Trennschweißungen quer zur Schlauchlänge die Beutel hergestellt hat, dann sind die Laufgänge für eine Schnur schon vorgebildet. If you now, as explained above, go through a longitudinal cut in the middle of the hose and through separating welds across the length of the hose Bag, then the gangways for a string are already prepared.
Das Verfahren wird an Hand der Figuren erläutert. The method is explained on the basis of the figures.
Fig. 1 zeigt den Blaskopf 1 mit der Zuführung 2 für den geschmolzenen Kunststoff. Aus der Ringdüse 3 tritt das Material für den Folienschlauch 4 und aus den Ringdüsen 5, die einen kleinen Durchmesser haben, dasjenige für vier dünne Schläuche 6 aus. Alle Schläuche werden, wie bekannt, aufgeblasen, und dabei verschweißen die dünnen Schläuche an der Stelle 7 mit dem Folienschlauch in dem noch heißen und plastischen Zustand. Durch die Quetschrollen 8 wird der Schlauch, wie üblich, flachgedrückt, so daß er das bei 9 und auch in Fig. 2 gezeigte Profil erhält. Fig. 1 shows the blow head 1 with the feed 2 for the molten Plastic. The material for the film tube 4 and exits from the ring nozzle 3 the ring nozzles 5, which have a small diameter, the one for four thin tubes 6 off. As is known, all hoses are inflated and they weld together in the process thin tubes at point 7 with the film tube in the still hot and plastic State. As usual, the hose is flattened by the squeezing rollers 8, so that it receives the profile shown at 9 and also in FIG.
Der so gebildete Schlauch kann sofort zu Beuteln verarbeitet werden, indem er zunächst in Richtung der Linie A-B (Fig. 2) aufgeschnitten und dann durch Trennschweißung zerteilt wird. Man kann ihn jedoch auch aufwickeln und die Verarbeitung an einem anderen Ort vornehmen. The tube formed in this way can immediately be processed into bags, by first slicing in the direction of line A-B (Fig. 2) and then through Separation weld is divided. However, it can also be wound up and processed in a different location.
Wenn gewünscht, kann der Beutel in bekannter Weise zwischen seinem Austritt aus der Ringdüse 3 und den Quetsehrollen 8 mit Seitenfalten versehen werden, wodurch Beutel mit Bodenfalten herstellbar sind. If desired, the bag can in a known manner between its The exit from the ring nozzle 3 and the squeezing rollers 8 are provided with side folds, whereby bags with bottom gussets can be produced.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB52146A DE1110856B (en) | 1959-02-17 | 1959-02-17 | Process for the production of foils intended for further processing into bags with drawstring |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB52146A DE1110856B (en) | 1959-02-17 | 1959-02-17 | Process for the production of foils intended for further processing into bags with drawstring |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1110856B true DE1110856B (en) | 1961-07-13 |
Family
ID=6969790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB52146A Pending DE1110856B (en) | 1959-02-17 | 1959-02-17 | Process for the production of foils intended for further processing into bags with drawstring |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1110856B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3211816A (en) * | 1962-01-03 | 1965-10-12 | Fmc Corp | Method and apparatus for shaping and stretching beaded edge films |
US3233286A (en) * | 1961-02-16 | 1966-02-08 | Edison Soc | Process and apparatus for extruding ribbed plastic material sections |
-
1959
- 1959-02-17 DE DEB52146A patent/DE1110856B/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3233286A (en) * | 1961-02-16 | 1966-02-08 | Edison Soc | Process and apparatus for extruding ribbed plastic material sections |
US3211816A (en) * | 1962-01-03 | 1965-10-12 | Fmc Corp | Method and apparatus for shaping and stretching beaded edge films |
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