DE3733133A1 - Becher aus kunststoff mit einer deckfolie - Google Patents
Becher aus kunststoff mit einer deckfolieInfo
- Publication number
- DE3733133A1 DE3733133A1 DE19873733133 DE3733133A DE3733133A1 DE 3733133 A1 DE3733133 A1 DE 3733133A1 DE 19873733133 DE19873733133 DE 19873733133 DE 3733133 A DE3733133 A DE 3733133A DE 3733133 A1 DE3733133 A1 DE 3733133A1
- Authority
- DE
- Germany
- Prior art keywords
- cover sheet
- layer
- cup
- cover foil
- heat
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/10—Container closures formed after filling
- B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
- B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
-
- 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
- B29C65/76—Making non-permanent or releasable 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
- B29C66/11—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
- B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
- B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—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
-
- 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
- B29C66/2424—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 a closed polygonal chain
- B29C66/24243—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 a closed polygonal chain forming a quadrilateral
- B29C66/24244—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 a closed polygonal chain forming a quadrilateral forming a rectangle
- B29C66/24245—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 a closed polygonal chain forming a quadrilateral forming a rectangle forming a square
-
- 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
- B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
- B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
- B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- 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
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
-
- 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
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
- B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
- B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
-
- 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
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
- B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
- B29C66/72327—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
- B29C66/72328—Paper
-
- 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
- B29C66/83—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
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/12—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Laminated Bodies (AREA)
- Packages (AREA)
Description
Die Erfindung betrifft einen Becher aus Kunststoff, insbesondere
zur Abnahme flüssiger oder pastöser Milchprodukte
oder Nahrungsmittel, mit einer auf seinem Becherrand
mittels einer Siegelschicht aufgesiegelten, die
Bechermündung überspannenden und eine Aluminiumschicht
enthaltenden Deckfolie.
Derartige Becher mit aufgesiegelter Deckfolie gehören
zum Stand der Technik. Der Erfinder hat sich das Ziel
gesetzt, eine Verbesserung des Verschlusses derartiger
Behälter herbeizuführen sowie insbesondere ein
ungewolltes Durchstoßen und Einreißen der Deckfolie zu
unterbinden.
Zur Lösung dieser Aufgabe führt eine Deckfolie aus einer
weichen Aluminiumschicht hoher Dehnung und Festigkeit
sowie einer Dicke von 15 bis 20 µm, auf die eine Papierschicht
eines flächenspezifischen Gewichtes von 35 bis
50 g/mm² mit einer hohen Elastizität mittels eines elastischen
Kaschierklebers aufkaschiert ist, wobei die
Unterseite der Deckfolie eine Heißsiegelschicht mit
definierter Schälfestigkeit aufweist.
Diese Verbund-Deckfolie, für die im Rahmen der Erfindung
gesondert Schutz begehrt wird, löst die vom Erfinder gesehene
Aufgabe in bestechender Weise - insbesondere
dann, wenn die Deckfolie in einem begrenzten ringförmigen
Bereich mit der Oberfläche des Becherrandes verbunden
und eine umlaufende äußere Randzone von der Heißsiegelschicht
freigehalten ist.
Dank der besonders reißfesten Ausgestaltung der Deckschicht
ist es nun möglich, eine spezielle Ausbildung
der Siegelnaht zu erzeugen; da im Siegelnahtbereich keine
Kerbwirkung entsteht, kann die Aluminiumfolie durch
Kerbwirkung auch nicht einreißen oder zerstört werden.
Diese spezifische Ausgestaltung der Siegelnaht wiederum
gestattet ein sicheres Trennen der Deckelfolie vom Becher
und dadurch ein verbraucherfreundliches Abreißen
bzw. Öffnen.
Außerdem hat es sich als günstig erwiesen, daß die Deckfolie
im Verbund Aluminium/Papierschicht ein definiertes
Dehnungs- und Spannungsverhalten aufweist, welches sogar
ein problemloses Verarbeiten auf Verpackungsmaschinen
mit Reckeinrichtung gestattet.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung
ergeben sich aus der nachfolgenden Beschreibung
eines bevorzugten Ausführungsbeispiels sowie anhand der
Zeichnung; diese zeigt in:
Fig. 1 die Draufsicht auf einen Becher für Joghurt
od. dgl. Lebensmittel;
Fig. 2 den Querschnitt durch Fig. 1 nach deren Linie
II-II;
Fig. 3 einen gegenüber Fig. 2 vergrößerten Ausschnitt
gemäß Pfeil III mit den Becher überspannender
Deckfolie und einem Siegelwerkzeug;
Fig. 4 einen vergrößerten Schnitt durch Fig. 3 nach
deren Linie IV-IV.
Ein einstückig aus Kunststoff geformter Becher 10 für
Joghurt od. dgl. Lebensmittel besteht aus einer etwa
zylindrischen Becherwandung 11 an einer Bodenplatte 12
und einem radial von der Becherwandung 11 abkragenden,
eine Bechermündung 13 umgebenden Becherrand 14.
Eine Sicke 17 bestimmt auf dem Becherrand 14 eine seitlich
begrenzte Siegelzone für eine aufgesiegelte Deckfolie
20; letztere ist somit nicht vollflächig mit der
Oberfläche des Becherrandes 14 verbunden, sondern nur im
schmalen Bereich einer Sickenbreite b von beispielsweise
2 mm, der äußere Randbereich 15 des Becherrandes 14 ist
somit nicht mit der Deckfolie 20 versiegelt.
Die Deckfolie 20 besteht aus einer weichen Aluminiumfolie
bzw. -schicht 21 von 15µm Dicke mit spezieller Zusammensetzung
zum Erreichen definierter technologischer
Werte, einer darauf mittels eines elastischen Kaschierklebers
22 flächig kaschierten Papierschicht 23 mit
spezieller Behandlung, die hohe Festigkeit und Elastizität
aufweist sowie einer andererseits die Aluminiumfolie
23 überdeckenden Heißsiegelschicht 24 mit definierter
Schälfestigkeit bei hoher Siegelnahtdichtigkeit (Fig. 4).
Diese in der Zeichnung im Verhältnis zum Becher 10 -
oder den in Fig. 3 angedeuteten Maschinenteilen - mit
überhöhter Dicke h dargestellte mehrschichtige Deckfolie
20 wird mittels eines Siegelwerkzeuges 30 aufgebracht,
das an einer Druckfläche 31 mit einem der Sicke 17 entsprechenden
Formring 32 versehen ist und Deckfolie 20
samt Becherrand 14 auf eine Gegenfläche 34 drückt.
Mit diesem Siegelwerkzeug 30 ist ein Verfahren zum
dichten Verschließen des aus Kunststoff geformten
Bechers 10 durchführbar; in beschriebener Weise wird auf
den Becherrand 14 die mit der Heißsiegelschicht 24 versehene
Deckfolie 20 aufgebracht sowie durch Druck und
Hitze festgelegt. Dabei entsteht in der Deckfolie 20
eine ringartige Ausformung 27 sowie im Becherrand 14
jene Sicke 17, in die sich die Deckfolie 20 einschmiegt.
Der außerhalb jener Ausformung 27 vorhandene
Teil der Heißsiegelschicht 24 wird nicht aktiviert.
Die mehrschichtige Deckfolie 20 bietet in der beschriebenen
Ausführung einen hohen Widerstand gegen ein Durchstoßen
und Einreißen während des Öffnens des Bechers 10
an.
Zudem gestattet die Deckfolie 20 das Einbringen in die
Sicke 17 des Becherrandes 14, ohne daß durch Kerbwirkung
eine partielle Zerstörung oder Beschädigung der Deckfolie
20 zu befürchten ist.
Die Aluminiumschicht 21 enthält bei einer besonderen
Ausführung (in %):
Einige technologische Werte sind:
Die Papierschicht 23 ist scharf satiniert, gebleicht und
weist eine plane Kaschierqualität auf bei einem
Flächengewicht von 35 bis 45 g/m², einer Dicke von 35
bis 40 µm und einem pH-Wert von 5,2 bis 7,0. Weitere
Kenngrößen sind:
Chloridgehalt, max. (%) | |
0,05 als NaCl DIN 53 125 | |
Sulfatgehalt, max. (%) | 0,3 als Na₂SO₄ DIN 53 125 |
Feuchtigkeitsgehalt (%) | lt. Bestellung |
Luftdurchlässigkeit n. BEKK | 300 |
Glättezahl d. Kasch. Seite n. BEKK | 1700 |
Aschegehalt (%) | - |
Bruchlast, min. (N/15 mm) | längs: 55, quer: 28 |
Bruchdehnung min. (%) | längs: 1,5, quer: 3,0 |
Reißlänge, min. (m) | längs:-, quer: - |
Claims (6)
1. Becher aus Kunststoff, insbesondere zur Aufnahme
flüssiger oder pastöser Milchprodukte oder Nahrungsmittel,
mit einer auf seinem Becherrand mittels
seiner Siegelschicht aufgesiegelten, die Bechermündung
überspannenden und eine Aluminiumschicht enthaltenden
Deckfolie, dadurch gekennzeichnet,
daß die Deckfolie (20) aus einer weichen Aluminiumschicht
(21) hoher Dehnung und Festigkeit sowie
einer Dicke von 15 bis 20 µm besteht, auf die eine
Papierschicht (23) eines flächenspezifischen Gewichtes
von 35 bis 50 g/m² mit einer hohen Elastizität
mittels eines elastischen Kaschierklebers (22) aufkaschiert
ist, wobei die Unterseite der Deckfolie
eine Heißsiegelschicht (24) mit definierter Schälfestigkeit
aufweist.
2. Becher nach Anspruch 1, dadurch gekennzeichnet, daß
die Deckfolie (20) in einem begrenzten ringförmigen
Bereich (27) mit der Oberfläche des Becherrandes
(14) verbunden und eine umlaufende äußere Randzone
(15) von der Heißsiegelschicht (24) freigehalten
ist.
3. Becher nach Anspruch 1 oder 2, dadurch gekennzeichnet,
daß der ringförmige Bereich von einer Sicke (17)
des Becherrandes (14) bestimmt ist, in welche sich
eine Ausformung (27) der Deckfolie (20) einschmiegt.
4. Deckfolie für einen Becher nach einem der Ansprüche
1 bis 3, dadurch gekennzeichnet, daß die Aluminiumschicht
(21) neben Aluminium u. a. noch etwa 0,2%
Si, 1,3 bis 1,4% Fe, 0,4 bis 0,5% Mn, 0,1% Zn
enthält und die Papierschicht (23) scharf satiniert,
gebleicht ist und eine plane Kaschierqualität aufweist,
bei einem Flächengewicht von 35 bis 45 g/m²,
einer Dicke von 35 bis 40 µm und einem pH-Wert von
5,2 bis 7,0.
5. Deckfolie nach Anspruch 4, gekennzeichnet durch eine
Papierschicht (23) mit
Chloridgehalt, max. (%)
0,05 als NaCl
Sulfatgehalt, max. (%) 0,3 als Na₂SO₄
Feuchtigkeitsgehalt (%) lt. Bestellung
Luftdurchlässigkeitszahl n. BEKK 300
Glättezahl d. Kasch Seite n. BEKK 1700
Aschegehalt (%) -
6. Deckfolie nach Anspruch 4 oder 5, gekennzeichnet
durch eine
Bruchlast, min. (N/15 mm)
längs: 55, quer: 28
Bruchdehnung, min (%) längs: 1,5, quer: 3,0
Reißlänge, min. (m) längs: -, quer: -
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873733133 DE3733133A1 (de) | 1987-10-01 | 1987-10-01 | Becher aus kunststoff mit einer deckfolie |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873733133 DE3733133A1 (de) | 1987-10-01 | 1987-10-01 | Becher aus kunststoff mit einer deckfolie |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3733133A1 true DE3733133A1 (de) | 1989-04-13 |
Family
ID=6337350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19873733133 Ceased DE3733133A1 (de) | 1987-10-01 | 1987-10-01 | Becher aus kunststoff mit einer deckfolie |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3733133A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996004186A1 (en) * | 1994-08-03 | 1996-02-15 | Gics & Vermee, L.P. | Ovenable food package |
WO1996015049A1 (en) * | 1994-08-03 | 1996-05-23 | Gics & Vermee, L.P. | Food product container |
WO1996032341A1 (de) * | 1995-04-13 | 1996-10-17 | Albiplast Ag | Behälter und verfahren zu dessen herstellung |
DE29701955U1 (de) * | 1997-02-05 | 1997-03-20 | Hueck Folien GmbH & Co. KG, 92637 Weiden | Abdeckung für eine Verpackungsanordnung |
DE19813846A1 (de) * | 1998-03-27 | 1999-10-14 | 4P Rube Goettingen Gmbh | Verfahren zum Versiegeln eines Behälters |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1176291A (en) * | 1968-05-07 | 1970-01-01 | Aei Corp | Disposable Container |
US3976195A (en) * | 1974-04-18 | 1976-08-24 | Modern Medical Concepts, Inc. | Sealed package of swab or applicator stick and medicinal material to be applied thereby |
US4070398A (en) * | 1976-10-18 | 1978-01-24 | Eastman Kodak Company | Laminates useful as packaging materials and method for manufacture thereof |
DE3413352A1 (de) * | 1983-04-23 | 1984-10-31 | Terumo Corp | Verpackung und verfahren zu ihrer herstellung |
FR2565211A1 (fr) * | 1984-05-29 | 1985-12-06 | Bridel Laiteries | Emballage notamment pour le conditionnement du beurre |
-
1987
- 1987-10-01 DE DE19873733133 patent/DE3733133A1/de not_active Ceased
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1176291A (en) * | 1968-05-07 | 1970-01-01 | Aei Corp | Disposable Container |
US3976195A (en) * | 1974-04-18 | 1976-08-24 | Modern Medical Concepts, Inc. | Sealed package of swab or applicator stick and medicinal material to be applied thereby |
US4070398A (en) * | 1976-10-18 | 1978-01-24 | Eastman Kodak Company | Laminates useful as packaging materials and method for manufacture thereof |
DE3413352A1 (de) * | 1983-04-23 | 1984-10-31 | Terumo Corp | Verpackung und verfahren zu ihrer herstellung |
FR2565211A1 (fr) * | 1984-05-29 | 1985-12-06 | Bridel Laiteries | Emballage notamment pour le conditionnement du beurre |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996004186A1 (en) * | 1994-08-03 | 1996-02-15 | Gics & Vermee, L.P. | Ovenable food package |
WO1996015049A1 (en) * | 1994-08-03 | 1996-05-23 | Gics & Vermee, L.P. | Food product container |
WO1996032341A1 (de) * | 1995-04-13 | 1996-10-17 | Albiplast Ag | Behälter und verfahren zu dessen herstellung |
DE19514072A1 (de) * | 1995-04-13 | 1996-10-17 | Albiplast Ag | Behälter und Verfahren zu dessen Herstellung |
DE19514072C2 (de) * | 1995-04-13 | 1998-04-09 | Albiplast Ag | Behälter und Verfahren zu dessen Herstellung |
DE29701955U1 (de) * | 1997-02-05 | 1997-03-20 | Hueck Folien GmbH & Co. KG, 92637 Weiden | Abdeckung für eine Verpackungsanordnung |
DE19813846A1 (de) * | 1998-03-27 | 1999-10-14 | 4P Rube Goettingen Gmbh | Verfahren zum Versiegeln eines Behälters |
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