DE1216139B - Thin-walled cup made of plastic by injection molding - Google Patents
Thin-walled cup made of plastic by injection moldingInfo
- Publication number
- DE1216139B DE1216139B DES88301A DES0088301A DE1216139B DE 1216139 B DE1216139 B DE 1216139B DE S88301 A DES88301 A DE S88301A DE S0088301 A DES0088301 A DE S0088301A DE 1216139 B DE1216139 B DE 1216139B
- Authority
- DE
- Germany
- Prior art keywords
- cup
- plastic
- ribs
- thin
- injection molding
- 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
- 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
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
- B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
- B65D1/265—Drinking cups
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0046—Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
- B29C2033/422—Moulding surfaces provided with a shape to promote flow of material in the mould cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7132—Bowls, Cups, Glasses
Description
BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY
DEUTSCHESGERMAN
PATENTAMTPATENT OFFICE
AUSLEGESCHRIFTEDITORIAL
Int. α.:Int. α .:
B 67bB 67b
Deutsche Kl.: 64 a-3German class: 64 a-3
Nummer: 1216 139Number: 1216 139
Aktenzeichen: S 88301III/64 aFile number: S 88301III / 64 a
Anmeldetag: 15. November 1963Filing date: November 15, 1963
Auslegetag: 5. Mai 1966Opening day: May 5, 1966
Im Spritzgußverfahren^ aus Kunststoff hergestellte dünnwandige Trinkbecher sind bekannt. Solche Becher werden nach Gebrauch häufig weggeworfen und ersetzen die aus Wachspapier oder ähnlichen Werkstoffen hergestellten, seit vielen Jahren benutzten Becher, die wegen ihres Ausgangsmaterials und wegen ihrer Nachgiebigkeit weniger vorteilhaft als starre Trinkbecher aus Kunststoff sind.Thin-walled drinking cups made of plastic by injection molding are known. Such Cups are often thrown away after use and replace those made of waxed paper or the like Made of materials, cups have been used for many years, which because of their raw material and are less advantageous than rigid plastic drinking cups because of their resilience.
Bei den Kunststoffbechern ist es bekannt, sie wegen der rasch auf die Hand des Benutzers übergehenden Wärme aus dem Inhalt nicht glattwandig, sondern außenseitig mit Rippen zu versehen. Da derartige Becher jedoch nicht hinreichend fest sind, werden sie mit einem Innenbecher versehen. Wegen der hohen Kosten sind solche doppelwandigen Becher aber nachteilig.In the case of plastic cups it is known that they pass quickly to the user's hand because of the Heat from the contents not smooth-walled, but rather provided with ribs on the outside. Since such However, cups are not sufficiently strong, they are provided with an inner cup. Because However, the high cost of such double-walled cups is disadvantageous.
Es gibt auch Kunststoffbecher mit äußeren Längsrippen, deren Scheitellinien einen so engen Abstand voneinander aufweisen, daß die auf ihnen ruhende Handfläche des Benutzers die dazwischenliegenden äußeren Vertiefungen überspannt, durch die die vom Inhalt abgegebene Wärme abfließen kann. Becher dieser Art sind jedoch bisher nicht als sehr dünnwandige Becher herzustellen, sondern erfordern vergleichsweise dicke Seitenwände, aus denen die vollwandig ausgebildeten Rippen vorstehen. Die Becherinnenwand ist dabei glatt. Wollte man derartige Becher im Spritzgußverfahren mit sehr dünnen Wänden herstellen, so ergibt sich von selbst eine Beschränkung der Wandstärke auf eine Mindestdicke, bei der gerade noch genügend Kunststoff zur Bildung des Bodens des Bechers in die Spritzgußform eingebracht werden kann.There are also plastic cups with outer longitudinal ribs, the apex lines of which are so closely spaced have from each other that the palm of the user resting on them is in between spanned outer depressions through which the heat given off by the contents can flow away. cups of this type, however, have so far not been produced as very thin-walled cups, but require comparatively thick side walls from which the full-walled ribs protrude. The inside wall of the cup is smooth. If you wanted such cups in the injection molding process with very thin walls produce, the wall thickness is automatically restricted to a minimum thickness, when just enough plastic is introduced into the injection mold to form the bottom of the cup can be.
Die Erfindung will diesen Mangel beheben. Das geschieht gemäß dem Grundgedanken der Erfindung dadurch, daß die Rippen auf wenigstens einer Seite der Becherwandung an ihren Scheiteln gegenüber der Normaldicke des Bechers verstärkt sind.The invention aims to remedy this deficiency. This is done according to the basic idea of the invention in that the ribs on at least one side of the cup wall at their apices opposite the Normal thickness of the cup are reinforced.
Durch die Erfindung werden an den vorgegebenen Stellen der Rippen für den Spritzguß größere Kanäle gebildet, durch die eine hinreichende Kunststoffmenge zum Spritzgießen hindurchgepreßt werden kann, um den Boden des Bechers zu bilden, der deshalb sehr dünnwandig ausgebildet werden kann.The invention creates larger channels at the predetermined locations on the ribs for injection molding formed through which a sufficient amount of plastic can be pressed for injection molding can to form the bottom of the cup, which can therefore be made very thin-walled.
Es ist überraschend, daß hierdurch gleichzeitig erreicht wird, daß sich die Strömungsrichtung des Kunststoffes für die dünneren Teile des Bechers ändert und so eine Umorientierung des Kunststoffes ejfolgt, was zur Festigkeit und besseren physikalischen Eigenschaft des Bechers beiträgt. Diese Wirkung beruht offenbar darauf, daß beim Einspritzen des heißen, fließfähigen Kunststoffes in die Form,It is surprising that it is achieved at the same time that the flow direction of the Plastic for the thinner parts of the cup changes and so a reorientation of the plastic follows, which contributes to the strength and better physical property of the cup. This effect is apparently based on the fact that when the hot, flowable plastic is injected into the mold,
Im Spritzgußverfahren aus Kunststoff
hergestellter dünnwandiger BecherIn the injection molding process from plastic
manufactured thin-walled cup
Anmelder:Applicant:
Somerville Industries Limited,Somerville Industries Limited,
London, Ontario (Kanada)London, Ontario (Canada)
Vertreter:Representative:
Dipl.-Ing. R. H. Bahr und Dipl.-Phys. E. Betzier, Patentanwälte, Herne, Freiligrathstr. 19Dipl.-Ing. R. H. Bahr and Dipl.-Phys. E. Betzier, Patent attorneys, Herne, Freiligrathstr. 19th
Als Erfinder benannt:Named as inventor:
Ronald Baron, Cleveland, Ohio (V. St. A.)Ronald Baron, Cleveland, Ohio (V. St. A.)
dieser der Richtung des geringsten Widerstandes folgt, d. h. den tieferen Ausnehmungen, an denen die Verstärkung der Rippen entsteht, folgt und sich dann zur Ausfüllung der dünneren Wandungsteile des Bechers in Umfangsrichtung ausdehnt. Infolgedessen erhält man im Ergebnis einen erheblich festeren Kunststoffbecher, so daß sich Becher hinreichender Festigkeit von sehr dünner Wandstärke herstellen lassen.this follows the direction of least resistance, i.e. H. the deeper recesses where the Reinforcement of the ribs arises, follows and then to fill in the thinner wall parts of the cup expands in the circumferential direction. As a result, a significant result is obtained stronger plastic cups, so that cups of sufficient strength with a very thin wall thickness can be produced.
Nach einer bevorzugten Ausführungsform der Erfindung beträgt die Dicke der'Becherwand zwischen 0,25 und 0,5 mm, und die Dicke der Rippen an den Scheiteln macht 0,8 bis 1 mm aus.According to a preferred embodiment of the invention, the thickness of the cup wall is between 0.25 and 0.5 mm, and the thickness of the ribs on the apices is 0.8 to 1 mm.
Die Erfindung und weitere ihrer Vorteile werden nachfolgend an Hand der Zeichnung näher erläutert. Es zeigtThe invention and further advantages thereof are explained in more detail below with reference to the drawing. It shows
F i g. 1 eine perspektivische Ansicht eines Bechers nach der Erfindung,
F i g. 2 einen Teillängsschnitt durch den Behälter längs der Linie H-II in F i g. 1 undF i g. 1 is a perspective view of a cup according to the invention,
F i g. 2 shows a partial longitudinal section through the container along the line H-II in FIG. 1 and
F i g. 3 einen vergrößert dargestellten Teilquerschnitt durch die Seitenwand des Bechers längs der Linielll-IIIinFig. 2.F i g. 3 shows an enlarged partial cross-section through the side wall of the cup along the Linielll-IIIinFig. 2.
Der im Spritzgießverfahren aus Kunststoff hergestellte dünnwandige Becher ist mit A bezeichnet. Er besitzt eine Seitenwand 10, 12, die einstückig mit dem Boden 11 ist. Die Seitenwandung 10, 12 ist gewellt, so daß auf der Innen- und Außenwand des Bechers eine Vielzahl entsprechender Rippen und Vertiefungen 13 und 14 bzw. 15 und 16 entstehen. Diese Rippen und Vertiefungen verlaufen zwischen Bechermündung und Boden und bieten derThe thin-walled cup made of plastic by injection molding is denoted by A. It has a side wall 10, 12 which is integral with the base 11. The side wall 10, 12 is corrugated so that a large number of corresponding ribs and depressions 13 and 14 or 15 and 16 are formed on the inner and outer walls of the cup. These ribs and depressions run between the mouth of the cup and the bottom and offer the
609 567/70609 567/70
Hand des Benutzers eine Auflagefläche auf den Scheiteln der Rippen, wobei die Handfläche des Benutzers die nach innen weisenden Vertiefungen überspannt, in denen die von dem Inhalt des Bechers abgegebene Wärme abgeführt werden kann. Die Rippen 14 sind auf der Außenseite der Becherwand an ihren Scheiteln 17 gegenüber der Normaldicke der Becherwand verstärkt.Hand of the user a resting surface on the vertices of the ribs, with the palm of the user the inwardly facing depressions spanned by the contents of the cup given off heat can be dissipated. The ribs 14 are on the outside of the cup wall Reinforced at their apices 17 compared to the normal thickness of the cup wall.
Von Bedeutung ist auch die Tatsache, daß der erfindungsgemäße Becher schneller als andere Becher hergestellt werden kann, weil die Rippen eine größere Oberfläche der Spritzform der Abkühlungswirkung aussetzen, so daß der Arbeitsgang gegenüber den herkömmlichen Bechern verkürzt werden kann, wodurch sich die Produktionsgeschwindigkeit vergrößert.Also of importance is the fact that the cup according to the invention is faster than other cups can be produced because the ribs expose a larger surface area of the injection mold to the cooling effect, so that the operation opposite the conventional cups can be shortened, thereby increasing the production speed enlarged.
Claims (2)
Britische Patentschrift Nr. 652 019;
USA.-Patentschrift Nr. 3 082 900.Considered publications:
British Patent No. 652,019;
U.S. Patent No. 3,082,900.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES88301A DE1216139B (en) | 1963-11-11 | 1963-11-15 | Thin-walled cup made of plastic by injection molding |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4438763A GB983906A (en) | 1963-11-11 | 1963-11-11 | Plastic drinking cups |
DES88301A DE1216139B (en) | 1963-11-11 | 1963-11-15 | Thin-walled cup made of plastic by injection molding |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1216139B true DE1216139B (en) | 1966-05-05 |
Family
ID=25997482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES88301A Pending DE1216139B (en) | 1963-11-11 | 1963-11-15 | Thin-walled cup made of plastic by injection molding |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1216139B (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005042356A1 (en) * | 2003-10-01 | 2005-05-12 | Solo Cup Operating Corporation | Ergonomic disposable cup having improved structural integrity |
USD608591S1 (en) | 2008-06-18 | 2010-01-26 | Solo Cup Operating Corporation | Cup |
USD612202S1 (en) | 2009-05-27 | 2010-03-23 | Solo Cup Operating Corporation | Cup |
USD613554S1 (en) | 2008-03-14 | 2010-04-13 | Solo Cup Operating Corporation | Cup |
USD649397S1 (en) | 2010-04-30 | 2011-11-29 | Pactiv Corporation | Sidewall for a cup |
USD649396S1 (en) | 2010-04-30 | 2011-11-29 | Pactiv Corporation | Sidewall for a cup |
US9314089B2 (en) | 2011-06-16 | 2016-04-19 | Huhtamaki, Inc. | Container having enhanced wall integrity and alignment element |
USD852583S1 (en) | 2011-06-16 | 2019-07-02 | Huhtamaki, Inc. | Disposable cup |
USD885842S1 (en) | 2018-10-25 | 2020-06-02 | Huhtamaki, Inc. | Disposable cup |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB652019A (en) * | 1948-11-01 | 1951-04-11 | British Vacuum Flask Company L | Improvements in or relating to cups and like drinking vessels |
US3082900A (en) * | 1959-07-21 | 1963-03-26 | Foster Grant Co Inc | Multi-wall insulating receptacle |
-
1963
- 1963-11-15 DE DES88301A patent/DE1216139B/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB652019A (en) * | 1948-11-01 | 1951-04-11 | British Vacuum Flask Company L | Improvements in or relating to cups and like drinking vessels |
US3082900A (en) * | 1959-07-21 | 1963-03-26 | Foster Grant Co Inc | Multi-wall insulating receptacle |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005042356A1 (en) * | 2003-10-01 | 2005-05-12 | Solo Cup Operating Corporation | Ergonomic disposable cup having improved structural integrity |
US7546932B2 (en) | 2003-10-01 | 2009-06-16 | Solo Cup Operating Corporation | Ergonomic disposable cup having improved structural integrity |
US8152018B2 (en) | 2003-10-01 | 2012-04-10 | Solo Cup Operating Corporation | Ergonomic disposable cup having improved structural integrity |
USD639606S1 (en) | 2008-03-14 | 2011-06-14 | Solo Cup Operating Corporation | Cup |
USD613554S1 (en) | 2008-03-14 | 2010-04-13 | Solo Cup Operating Corporation | Cup |
USD624788S1 (en) | 2008-03-14 | 2010-10-05 | Solo Cup Operating Corporation | Cup |
USD651452S1 (en) | 2008-06-18 | 2012-01-03 | Solo Cup Operating Corporation | Cup |
USD622105S1 (en) | 2008-06-18 | 2010-08-24 | Solo Cup Operating Corporating | Cup |
USD627596S1 (en) | 2008-06-18 | 2010-11-23 | Solo Cup Operating Corporation | Cup |
USD608591S1 (en) | 2008-06-18 | 2010-01-26 | Solo Cup Operating Corporation | Cup |
USD615356S1 (en) | 2009-05-27 | 2010-05-11 | Solo Cup Operating Corporation | Cup |
USD612202S1 (en) | 2009-05-27 | 2010-03-23 | Solo Cup Operating Corporation | Cup |
USD612201S1 (en) | 2009-05-27 | 2010-03-23 | Solo Cup Operating Corporation | Cup |
USD649396S1 (en) | 2010-04-30 | 2011-11-29 | Pactiv Corporation | Sidewall for a cup |
USD649397S1 (en) | 2010-04-30 | 2011-11-29 | Pactiv Corporation | Sidewall for a cup |
US9314089B2 (en) | 2011-06-16 | 2016-04-19 | Huhtamaki, Inc. | Container having enhanced wall integrity and alignment element |
USD852583S1 (en) | 2011-06-16 | 2019-07-02 | Huhtamaki, Inc. | Disposable cup |
US10974861B2 (en) | 2011-06-16 | 2021-04-13 | Huhtamaki, Inc. | Container having enhanced wall integrity and alignment element |
US11167874B2 (en) | 2011-06-16 | 2021-11-09 | Huhtamaki, Inc. | Container having enhanced wall integrity and alignment element |
US11794940B2 (en) | 2011-06-16 | 2023-10-24 | Huhtamaki, Inc. | Container having enhanced wall integrity and alignment element |
USD885842S1 (en) | 2018-10-25 | 2020-06-02 | Huhtamaki, Inc. | Disposable cup |
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