Manufacturing container or tube from paper; or other manufacturi – Container making – Rigid container
Reexamination Certificate
2001-02-26
2004-05-25
Rada, Rinaldi I. (Department: 3721)
Manufacturing container or tube from paper; or other manufacturi
Container making
Rigid container
C053S376500
Reexamination Certificate
active
06740018
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to improvements in methods of and in apparatus for adhesively bonding discrete or coherent objects to each other. More particularly, the invention relates to improvements in methods of and in apparatus for securing to each other selected portions of one and the same blank or of two or more discrete blanks by resorting to an adhesive substance. Still more particularly, the invention relates to improvements in methods of and in apparatus for bonding to each other portions of successive receptacles or containers which can be utilized with advantage for the confinement of smokers' products such as plain or filter cigarettes, cigars or cigarillos, or arrays or groups of packs each of which contains an array of discrete rod-shaped smokers' products.
A so-called pack of cigarettes or other rod-shaped smokers' products (hereinafter referred to as cigarettes for the sake of simplicity) can constitute a so-called soft or hinged-lid pack. In either event, the receptacle or packet which confines the array of cigarettes can contain an inner envelope which can contain a layer of metallic foil, an outer envelope of paper or lightweight cardboard which surrounds the inner envelope, and a transparent outermost envelope of cellophane or the like. Each envelope can constitute a converted blank which is treated in a packing machine, preferably in such a way that the blank which is to constitute the inner envelope is folded around an array of, for example, twenty cigarettes each. The blank which is to constitute the outer envelope is thereupon folded around the inner envelope, and the blank which is to constitute the outermost envelope is folded around the outer envelope.
The conversion of blanks into envelopes involves folding selected portions of the blanks relative to each other and tereupon maintaining the folded portions in their new positions. This often involves the utilization of a suitable adhesive which is applied by one or more pasters and which must be allowed or caused to set, e.g., by pressing the parts which are to be adhesively bonded to each other against one another between a back support and a mobile pressure exerting member.
A modern cigarette packing machine is designed to turn out large numbers of cigarette packs per unit of time. The same holds true for a modern carton making machine which is designed to confine a group of, for example, ten cigarette packs in a cardboard receptacle. A carton making machine also resorts to adhesive in order to ensure that the overlapping parts of the carton will remain in reliable contact with each other.
The utilization of adhesive (glue) in such high-output machines presents numerous problems because an adhesive requires a certain interval of time to set, i.e., to bond two neighboring panels, walls, flaps, tucks or like parts of a converted paper, cardboard or other blank to each other with a force which is required for further processing of the thus obtained receptacles (e.g., for storage, for transport from the manufacturing plant to the distributor and for manipulation by the purchaser). During such interval of time, the parts or objects (such as sheets and/or panels) which are to be adhesively secured to each other must be pressed against each other between a pressure applying member and a back support. If the available interval of time is shorter than the required minimum interval, the bond is unsatisfactory and the adhesively secured parts of a converted blank are likely to open at an inopportune time.
Attempts to overcome the above-enumerated problems include the utilization of hybrid glues, namely of a hot melt which can be treated to establish a bond after elapse of a short interval of time and a cold glue which can secure two surfaces to each other after elapse of a longer interval of time. It is also known to employ various types of drying apparatus, e.g., heating systems which rely on heating as a result of direct contact between the heat transmitting and the heat receiving parts, or heating systems which operate with radiation heat. Neither the direct- or radiation-heating systems, nor the hybrid glues are enirely satisfactory for a number of reasons. For example, resort to a direct heating system can entail excessive heating of the tracks for the commodities to be bonded to each other, especially during unanticipated stoppages of a packing machine; this can result in charring of the blanks or finished receptacles and in unacceptable discoloration and/or weakening of the receptacles. Moreover, the transfer of heat between a moving object and a stationary object (such as between a moving blank or partially finished receptacle and the tracks for the moving part) cannot be regulated and maintained with a requisite degree of accuracy. If the moving part is a cigarette pack, unpredictable heating of the pack can bring about highly undesirable changes of the aroma of tobacco smoke. Furthermore the utilization of an electromagnetic field in connection with the heating of objects which contain metallic wrapping material (such as metallic foil) can induce voltages which can damage the commodities due to flashover.
U.S. Pat. No. 5,732,533 (granted Mar. 31, 1998 to Focke et al. for “PROCESS AND APPARATUS FOR PRODUCING PACKS WITH AN OUTER WRAPPER CONSISTING OF PAPER OR THE LIKE”) proposes to apply patches of hot melt to a running web of wrapping material which is thereupon subdivided into blanks. The blanks are converted into receptacles for arrays of cigarettes and the hot melt is activated during certain stages of conversion of blanks into receptacles, e.g., on a so-called folding turret and/or in a so-called pack tower. This contributes significantly to the space requirements as well as to the initial and maintenance cost of the packing machine.
OBJECTS OF THE INVENTION
An object of the present invention is to provide a novel and improved method of applying and otherwise manipulating adhesive in a time- and space-saving manner.
Another object of the invention is to provide a novel and improved method of making packets, cartons and other types of receptacles for smokers' products.
A further object of this invention is to provide a novel and improved method of activating adhesive paste during or preparatory or subsequent to application to blanks of paper, cardboard or other wrapping materials, especially those which are utilized in the tobacco processing industry.
An additional object of the instant invention is to provide a method of making packs, cartons and other types of commodities which contain smokers' products in such a way that the contents of the commodities are not damaged and/or otherwise adversely influenced due to the utilization and/or processing of adhesive between overlapping parts (such as walls, panels, flaps, tucks or the like) of the receptacles for the smokers' products.
Still another object of the invention is to provide novel and improved cigarette packs, cartons for cigarette packs and analogous products of the tobacco processing industry.
A further object of the invention is to provide a novel machine for the making of receptacles for smokers' products such as packs of plain or filter cigarettes, cigarillos or the like as well as so-called cartons for such packs.
Another object of the present invention is to provide a packing machine with novel and improved means for applying and/or otherwise manipulating adhesive which is to bond parts of cigarette packets, cartons and analogous receptacles to each other.
An additional object of the invention is to provide a cigarette packing or an analogous machine with novel and improved mobile blank processing devices.
Still another object of the invention is to provide a cigarette packing or cigarette pack packing machine with novel and improved means for conveying discrete packets or assemblies of packets through adhesive applying and adhesive processing stations.
A further object of the invention is to provide a method of manipulating smokers' products in such a way that their appear
Anderson Chad
Durand Paul
Kinberg Robert
Rada Rinaldi I.
Topack Verpackungstechnik GmbH
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